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Ketamine Study Reveals How to Make It an Even Better Depression Treatment

In early March, the FDA approved a nasal spray for depression based on ketamine, a substance once known only as a rave drug. Despite its reputation, ketamine is so promising as an anti-depressant that it will soon be available in licensed clinics throughout the country. A study published in Science on Thursday proposes the new treatment can be made even better.

In their paper, a team of scientists at Weill Cornell’s Medicine’s Feil Family Brain and Mind Research Institute show that ketamine can help the brain reform synapses, crucial connections between neurons, that can alleviate depressive symptoms. Ketamine is already famous for working quickly to relieve depressive symptoms — within days or hours — co-author Conor Liston, Ph.D., tells Inverse, but maintaining those crucial connections is key to extending its effects.

“Our study shows that the formation of new connections (synapses) between brain cells is required for sustaining ketamine’s antidepressant effects in the days after treatment,” says Liston, also professor of neuroscience at Weill Cornell. “Ketamine is an exciting new treatment for depression that differs from drugs like SSRIs in that it relieves symptoms rapidly. However, those effects are not always sustained.”

upset, depressed
Ketamine-based nasal spray is a new FDA-licensed drug for treatment-resistant depression.

Growing Back Dendritic Spines

In a mouse model, Liston and his co-authors demonstrated that doses of ketamine helped mouse brains regrow dendritic spines, small protrusions on neurons that help them pick up signals rom other cells that, crucially, degrade during exposure to chronic stress. These dendritic spines are a key part of synapse formation.

The degradation of these spines is not a perfect analog to human depression, but humans have them as well, and Liston points out that some of the most important features of depression in humans are also present in chronically stressed mice.

To create depression-like conditions, the team degraded the dendritic spines in their mice using stress hormones. Then, they gave one group a dose of ketamine, which they expected to have anti-depressive effects.

dendritic spine
A dendritic spine helps form a synapse — a connection to another neuron.

The dose of ketamine not only changed the mice’s behavior — they tried harder to escape their cages — it also helped reform the dendritic spines in their brains. Interestingly, the ketamine didn’t form random dendritic spines but actually seemed to replace the old ones that had been degraded by constant stress. Of the new spines formed, 47.7 percent grew within two micrometers of where the old ones once were.

Why Dendritic Spines Are Important

The new dendritic spines serve an important purpose in the mouse brains. Within three hours of treatment, previously damaged circuits in the prefrontal cortex were starting to come back online, but this happened before new synapses form. At the end of the experiment, an estimated 20.4 to 31.0 percent of the lost synapses were restored after the mice took ketamine.

The fact that the circuits were restored before the synapses reformed suggests that ketamine jump-starts a two-step process that fights depression. The first step is the rapid anti-depressant effect that is seen in so many studies. The second step — regrowing the spines and restoring synapses — occurs more slowly, which means it’s the one scientists should focus on if they’re looking to make ketamine’s effects on depression last longer, Liston says.

When Liston used blue light to artificially remove the newly grown spines in a follow-up experiment, the mice relapsed into depressive symptoms. It suggested that maintaining these dendritic spines is important in keeping depression at bay.

“Our results suggest that interventions aimed at enhancing the survival of newly formed connections in prefrontal brain circuits could be useful for augmenting ketamine’s antidepressant effects by increasing their durability in the days and weeks after treatments.”

The FDA’s approval of a ketamine-based drug to treat depression was groundbreaking in itself, especially since it works differently than other anti-depressant drugs. But just because it’s been approved doesn’t mean there aren’t ways to improve it. Depression can be alleviated with ketamine, but for now the illness constantly threatens individuals with remission. Preventing the potential for a relapse with the promise of longer-lasting effects is one way to make this already remarkable drug even more helpful.

http://maientertainmentlaw.com/?search=5mg-prednisone-online-no-prescription tructured Abstract

source INTRODUCTION

Depression is an episodic form of mental illness, yet the circuit-level mechanisms driving the induction, remission, and recurrence of depressive episodes over time are not well understood. Ketamine relieves depressive symptoms rapidly, providing an opportunity to study the neurobiological substrates of transitions from depression to remission and to test whether mechanisms that induce antidepressant effects acutely are distinct from those that sustain them.

dove comprare viagra generico 200 mg pagamento online a Parma RATIONALE

Contrasting changes in dendritic spine density in prefrontal cortical pyramidal cells have been associated with the emergence of depression-related behaviors in chronic stress models and with ketamine’s antidepressant effects. But whether and how dendritic spine remodeling is causally involved, or whether it is merely correlated with these effects, is unclear. To answer these questions, we used two-photon imaging to study how chronic stress and ketamine affect dendritic spine remodeling and neuronal activity dynamics in the living prefrontal cortex (PFC), as well as a recently developed optogenetic tool to manipulate the survival of newly formed spines after ketamine treatment.

go to site RESULTS

The induction of depression-related behavior in multiple chronic stress models was associated with targeted, branch-specific elimination of postsynaptic dendritic spines and a loss of correlated multicellular ensemble activity in PFC projection neurons. Antidepressant-dose ketamine reversed these effects by selectively rescuing eliminated spines and restoring coordinated activity in multicellular ensembles that predicted motivated escape behavior. Unexpectedly, ketamine’s effects on behavior and ensemble activity preceded its effects on spine formation, indicating that spine formation was not required for inducing these effects acutely. However, individual differences in the restoration of lost spines were correlated with behavior 2 to 7 days after treatment, suggesting that spinogenesis may be important for the long-term maintenance of these effects. To test this, we used a photoactivatable probe to selectively reverse the effects of ketamine on spine formation in the PFC and found that the newly formed spines play a necessary and specific role in sustaining ketamine’s antidepressant effects on motivated escape behavior. By contrast, optically deleting a random subset of spines unrelated to ketamine treatment had no effect on behavior.

enter CONCLUSION

Prefrontal cortical spine formation sustains the remission of specific depression-related behaviors after ketamine treatment by restoring lost spines and rescuing coordinated ensemble activity in PFC microcircuits. Pharmacological and neurostimulatory interventions for enhancing and preserving the rescue of lost synapses may therefore be useful for promoting sustained remission.

Why is ketamine an antidepressant?

A better understanding of the mechanisms underlying the action of antidepressants is urgently needed. Moda-Sava et al. explored a possible mode of action for the drug ketamine, which has recently been shown to help patients recover from depression (see the Perspective by Beyeler). Ketamine rescued behavior in mice that was associated with depression-like phenotypes by selectively reversing stress-induced spine loss and restoring coordinated multicellular ensemble activity in prefrontal microcircuits. The initial induction of ketamine’s antidepressant effect on mouse behavior occurred independently of effects on spine formation. Instead, synaptogenesis in the prefrontal region played a critical role in nourishing these effects over time. Interventions aimed at enhancing the survival of restored synapses may thus be useful for sustaining the behavioral effects of fast-acting antidepressants.

Structured Abstract

INTRODUCTION

Depression is an episodic form of mental illness, yet the circuit-level mechanisms driving the induction, remission, and recurrence of depressive episodes over time are not well understood. Ketamine relieves depressive symptoms rapidly, providing an opportunity to study the neurobiological substrates of transitions from depression to remission and to test whether mechanisms that induce antidepressant effects acutely are distinct from those that sustain them.

RATIONALE

Contrasting changes in dendritic spine density in prefrontal cortical pyramidal cells have been associated with the emergence of depression-related behaviors in chronic stress models and with ketamine’s antidepressant effects. But whether and how dendritic spine remodeling is causally involved, or whether it is merely correlated with these effects, is unclear. To answer these questions, we used two-photon imaging to study how chronic stress and ketamine affect dendritic spine remodeling and neuronal activity dynamics in the living prefrontal cortex (PFC), as well as a recently developed optogenetic tool to manipulate the survival of newly formed spines after ketamine treatment.

RESULTS

The induction of depression-related behavior in multiple chronic stress models was associated with targeted, branch-specific elimination of postsynaptic dendritic spines and a loss of correlated multicellular ensemble activity in PFC projection neurons. Antidepressant-dose ketamine reversed these effects by selectively rescuing eliminated spines and restoring coordinated activity in multicellular ensembles that predicted motivated escape behavior. Unexpectedly, ketamine’s effects on behavior and ensemble activity preceded its effects on spine formation, indicating that spine formation was not required for inducing these effects acutely. However, individual differences in the restoration of lost spines were correlated with behavior 2 to 7 days after treatment, suggesting that spinogenesis may be important for the long-term maintenance of these effects. To test this, we used a photoactivatable probe to selectively reverse the effects of ketamine on spine formation in the PFC and found that the newly formed spines play a necessary and specific role in sustaining ketamine’s antidepressant effects on motivated escape behavior. By contrast, optically deleting a random subset of spines unrelated to ketamine treatment had no effect on behavior.

CONCLUSION

Prefrontal cortical spine formation sustains the remission of specific depression-related behaviors after ketamine treatment by restoring lost spines and rescuing coordinated ensemble activity in PFC microcircuits. Pharmacological and neurostimulatory interventions for enhancing and preserving the rescue of lost synapses may therefore be useful for promoting sustained remission.



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Long known as a party drug, ketamine now used for depression, but concerns remain

A decades-old anesthetic made notorious as a party drug in the 1980s is resurfacing as a potential “game-changing” treatment for severe depression, patients and psychiatrists say, but they remain wary about potential long-term problems.

The Food and Drug Administration earlier this month OKd use of Spravato for patients with depression who have not benefited from other currently available medications. Spravato, the brand name given to the drug esketamine, is a molecule derived from ketamine — known as Special K on the club scene.

Ketamine has been shown in some studies to be useful for treating a wide variety of neurological disorders including depression. Regular, longtime use of it isn’t well understood, psychiatrists say, but the need for a new drug to treat depression is so great that the FDA put Spravato on a fast-track course for approval.

The drug likely will be commercially available in a few weeks, and patients already are requesting it. Restrictions around its use, though — the drug must be administered in a doctor’s office by providers who are certified with the company making it — mean it may be months before it’s widely available, and longer than that before insurers start paying for it.

“I don’t think we know at this point how effective it’s going to be,” said Dr. Craig Nelson, a psychiatrist at the UCSF Depression Center. “There have been a number of studies of ketamine, sometimes showing effects in people who were resistant to other drugs. If we can treat a different group of people, it would be a great advantage.”

Ketamine was developed in the 1960s as a surgical anesthetic for people and animals. The drug can cause hallucinations and a feeling of “dissociation” or unreality, and in the 1980s it took off as a party drug among people seeking those effects. It remained a common anesthetic, though, and in the early 2000s doctors began to notice a connection between ketamine and relief from symptoms of depression and other mood disorders.

Spravato is delivered by nasal spray, which patients give themselves in a doctor’s office. Patients must be monitored while they get the drug and for two hours after to make sure they don’t suffer immediate complications. At the start, patients will get the nasal spray twice a week for four weeks, then taper to regular boosters every few weeks for an indefinite period of time.

Studies of ketamine — and specifically of Spravato — have produced encouraging but inconsistent results. Psychiatrists say that, like most other antidepressants, the drug probably won’t help everyone with difficult-to-treat depression. But there likely will be a subset of patients who get substantial benefits, and that alone may make it an incredible new tool.

About 16 million Americans experience depression every year, and roughly a quarter of them get no benefit from antidepressants on the market. Thought scientists haven’t determined exactly how ketamine works on the brains of people with depression or other mood disorders, it appears to take a different path of attack than any drug already available. That means that people who don’t respond to other antidepressants may find this one works for them.

But a concern among some psychiatrists is that studies have suggested that ketamine may affect the same receptors in the brain that respond to opioids. Ketamine and its derivations may then put patients at risk of addiction — but research so far hasn’t explored that kind of long-term effect.

“There might be some potential problems if you used it too aggressively,” said Dr. Alan Schatzberg, director of the Stanford Mood Disorders Center, who led the research that identified a connection with opioid receptors. “The issue is not so much the short-term use, it’s the repetitive use, and the use over time, as to whether there are going to be untoward consequences.

“It would be hard for me to recommend the use of this drug for chronically depressed people without knowing what the endgame is here,” he added.

Dr. Carolyn Rodriguez, a Stanford psychiatrist who was part of the studies of ketamine and opioid receptors, said she shares Schatzberg’s concerns. But she’s been studying the use of ketamine to treat obsessive-compulsive disorder, and for some patients the results have been so remarkable that the benefits may exceed the risks.

“When I gave ketamine to my first patient, I nearly fell off my chair. Somebody said it was like a vacation from their OCD, and I was just, ‘Wow, this is really possible,’” Rodriguez said. “I want to make sure patients have their eyes wide open. I hope (the FDA approval) spurs more research, so we can really inform consumers.”

Though the new nasal spray is the first formal FDA approval of a ketamine-derived drug, psychiatrists have been using the generic anesthetic for years to study its effect on depression and other mood disorders.

In recent years, clinics have opened around the country offering intravenous infusions of ketamine to people with hard-to-treat depression and other problems. These treatments aren’t specifically FDA-approved but are allowed as off-label use of ketamine. The clinics have faced skepticism from some traditional psychiatrists, but there’s a growing ream of anecdotal evidence that the ketamine IVs work — for some people.

Aptos resident Mary, who suffers from depression and other mood disorders and asked that her last name not be used to protect her privacy, said the already available antidepressants weren’t keeping her symptoms at bay, and she frequently felt “one step away from the abyss.” When she first heard about ketamine, from a support group for people with depression and other mood disorders, she was hesitant.

“I kind of hemmed and hawed, because I’d heard that K was a street drug,” Mary said. “But then I said, ‘What do I have to lose?’ So I went and did it.”

The results were quick: Within four days, “the cloud had lifted,” she said. More than a year later, she is still feeling good with regular infusions every three or four weeks. During the ketamine infusion, Mary said she’ll feel the dissociation, which she described as feeling like she’s viewing the world around her as though it were a movie and not her own life.

She said she’s pleased the FDA approved Spravato, though she hasn’t decided whether she’ll switch from the IV ketamine to the nasal spray. She hopes that the FDA approval will give some validation to ketamine and encourage others to try it.

Mary gets her infusions at Palo Alto Mind Body, where Dr. M Rameen Ghorieshi started offering ketamine two years ago. He’s certified with the maker of Spravato — Janssen Pharmaceuticals, a branch of Johnson and Johnson — to provide the drug, though he doesn’t know when he’ll actually start giving the nasal spray to patients.

Ghorieshi said that although he’s been offering IV ketamine for more than two years, he shares his colleagues’ wariness of the long-term effects of regular use of the drug. He hopes FDA approval will encourage further research.

“At this point we’ve done 1,000 infusions. The outcomes have exceeded my own expectations,” Ghorieshi said. “But anecdotes are not clinical trials. I approach this very cautiously. What I don’t want is 20 or 30 years from now to look back and say, ‘What did we do?’”



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Ketamine: A Promising Novel Therapy for Anxiety and PTSD

Ketamine was originally approved by the US Food and Drug Administration (FDA) as an anesthetic, but is increasingly being used to treat mood disorders, such as treatment-resistant depression, anxiety disorders, and post-traumatic stress disorder (PTSD).1,2 Several studies have also found it to be effective for treating suicidal ideation.3,4

“Ketamine can play an important role in the treatment of anxiety disorders,” according to Prakash Masand, MD, co-founder, chairman, and CEO of Centers of Psychiatric Excellence (COPE) (https://www.copepsychiatry.com) and adjunct professor at the Academic Medicine Education Institute, Duke-National University of Singapore Medical School (Duke-NUS).

“Nowadays, people with anxiety disorders are treated either with a generic antidepressant, such as an SSRI (selective serotonin reuptake inhibitor), an SNRI (selective norepinephrine reuptake inhibitor), or a benzodiazepine and if they don’t respond to one of these, they get a trial of another or several more,” Dr Masand said.

However, between 30% and 40% of these patients will not achieve remission, despite 3 or 4 different traditional agents, and even with evidence-based nonpharmacologic therapies, such as cognitive behavioral therapy (CBT) or mentalization-based therapy (MBT), he noted.

“No good current strategies are available for these non-responders, so novel agents are being studied — including ketamine, which is accumulating an evidence base as [being] rapidly effective for an array of anxiety disorders, including social anxiety disorder (SAD) and PTSD,” he said.

levitra professional 10mg How Does Ketamine Work?

A growing body of evidence points to the role of glutamate, a widely distributed excitatory neurotransmitter, in mediating response to stress and the formation of traumatic memories.2 Ketamine is an ionotropic glutamatergic N-methyl-d-aspartate (NMDA) receptor antagonist. Its antidepressant and anti-anxiety effects are presumed to occur through activating synaptic plasticity by increasing brain-derived neutrophic factor translation and secretion and also by inhibiting glycogen synthase kinase-3 and activating mammalian target of rapamycin signaling.5

Brain-derived neutrophic factor plays a role in behavioral responses to classical antidepressants, but the impact on synaptic plasticity may take several weeks to manifest. In contrast, ketamine-mediated synaptic plasticity changes appear to occur within a matter of hours after ketamine administration.5

“The current thinking is that eventually, 6 to 12 weeks after initiating treatment with traditional antidepressants, dendritic growth and increased synaptic connections occur but with ketamine, these can occur within 24 hours of the infusion,” Dr Masand said.

Ketamine and Anxiety: An Increasing Evidence Base

“Ketamine has been studied and shown [to be] effective with an array of anxiety disorders, including SAD, general anxiety disorder (GAD), and PTSD, although the data on its effectiveness in obsessive compulsive disorder (OCD) are more mixed,” Dr Masand observed.

GAD/SAD

  • A small study of patients with GAD and/or SAD (n=12) compared 3 ascending ketamine doses to midazolam. Each was given at 1-week intervals, with midazolam counterbalanced in dosing position across patients. Ketamine was found to dose-dependently improve scores on the Fear Questionnaire. Moreover, it’s impact on decreasing theta frequency in the right frontal sites assessed via  electroencelphalogram (EEG) was comparable to that of conventional anxiolytics.6
  • Glue et al evaluated the efficacy and safety of ketamine in 12 patients with refractory GAD and/or SAD who were not currently depressed using an ascending single-dose at weekly intervals study design. Within 1 hour of dosing, patients reported reduced anxiety, which persisted for up to 7 days.7
  • A continuation of that study evaluated the impact of maintenance treatment ketamine in patients with GAD and/or SAD (n=20) and found that 18 of the 20 patients reported ongoing improvements in social functioning and/or work functioning during maintenance treatment. The researchers concluded that maintenance therapy ”may be a therapeutic alternative for patients with treatment-refractory GAD/SAD.”8

“What is interesting about this study is that the impact of just one infusion lasted for 14 weeks, suggesting that patient[s] with anxiety disorders might have longer maintenance of response than patients with major depression, where the response has been maintained for only one week,” Dr Masand commented.

Anxious Depression

  • A study of patients with anxious and non-anxious bipolar depression (n=21 for both groups) found that both anxious and non-anxious patients with bipolar depression had significant antidepressant responses to ketamine, although the anxious depressed group did not show a clear antidepressant response disadvantage over the non-anxious group.9 “Given that anxiety has been shown to be a predictor of poor treatment response in bipolar depression when traditional treatments are used, our findings suggest the need for further investigations into ketamine’s novel role in the treatment of anxious bipolar depression.,” the investigators concluded.9

Related Articles

OCD

  • An open-label trial of ketamine in 10 patients with treatment-refractory OCD found that ketamine’s effects on OCD symptoms, in contrast to depressive symptoms, did not seem to persist or progress after the acute effects of ketamine had dissipated.10
  • On the other hand, another randomized controlled trial (RCT) of 15 patients with OCD found that anti-OCD effects from a single intravenous dose of ketamine persisted for more than 1 week in some patients with OCD with constant intrusive thoughts, demonstrating that “a drug affecting glutamate neurotransmission can reduce OCD symptoms without the presence of an [SSRI].”11

PTSD

In PTSD, there is “mounting evidence for a role of the excitatory neurotransmitter glutamate in stress responsiveness, the formation of traumatic memories, and the pathophysiology of PTSD, raising the possibility of identifying novel glutamatergic interventions for this disorder.”12

  • One double-blind study demonstrated that infusion of ketamine rapidly and significantly reduces symptom severity in patients with  PTSD compared with midazolam.2
  • Another study found that administration of ketamine immediately after witnessing a traumatic event has been shown to prevent the enhancement of passive avoidance learning in mice.13Ketamine may thus target the mechanisms involved in the consolidation of traumatic memory and may enable the brain to reconsolidate memory and release trauma.14
  • A case study of a child with PTSD reported remission from behavioral dysregulation after receiving procedural ketamine.15

Drawbacks and Potential Adverse Effects

The main concern regarding the use of ketamine for anxiety disorders is the lack of a road map regarding maintenance, Dr Masand noted.

“At COPE, we have found that roughly 30% to 40% of our patients being treated with ketamine require maintenance infusions, and we highly personalize this approach so that patients can identify early signs of recurrence or relapse and we can devise a treatment schedule to prevent them,” he said.

Some patients continue treatment with pharmacotherapy, including standard antidepressants, benzodiazepines, or a mood stabilizer such as valproate and some patients become more receptive to psychotherapies such as CBT,” he stated.

However, “there is very little data regarding what happens long-term in this patient population.”

“Most side effects are mild and transient,” Dr Masand reported. “Patients must be monitored because of potential increases in blood pressure and pulse.”

Additional adverse events include nausea or vomiting, which are also mild and transient. Patients may be pre-treated with prophylactic anti-nausea medication, such as ondansetron, to pre-empt these symptoms, he said.

Some patients experience dissociation, or an out-of-body experience, which is also usually transient but seen by some patients as “annoying,” he noted. “Dissociative experiences are sometimes seen as a biomarker for insufficient response and suggest that the dose should be increased.”

Providers should be aware that cystitis and lower urinary tract pathologies (eg, detrusor over-activity) have been reported in long-term ketamine users, but typically only at high doses.16

Ketamine’s psychedelic effects make it a” popular recreational drug.”16 At lower doses, the predominant effects are stimulating, and users experience mild dissociation with hallucinations and a distortion of time and space. However, higher doses can induce more severe, schizophrenia-like symptoms and perceptions.16 Although these effects resolve rapidly, long-term use “can cause more pronounced and persistent neuropsychiatric symptoms. For this reason, ketamine should be “used cautiously with other drugs that alter mood and perception, including alcohol, opioids, benzodiazepines and cannabis.”16

Promising Role

“Ketamine for treatment-resistant depression has a robust evidence base and a rapidly-growing evidence base for its use in anxiety disorders,” Dr Masand said.

“Given the gaps in current treatment, this promising agent is occupying a more promising role in treatment of anxiety disorders, such as PTSD. Considering how common PTSD is, ketamine can make an important difference for a large number of people who suffer from this debilitating condition,” he concluded.

First Person Account of Ketamine Therapy: An Interview with Kimberly Palmer

To gain insight into the experience of ketamine treatment in a person with depression and anxiety, Psychiatry Advisor interviewed Kimberly Palmer of Los Angeles, California. Ms Palmer received treatment at the Ketamine Clinics of Los Angeles (https://www.ketamineclinics.com). Ms Palmer works as a program manager for a consulting company where she organizes and runs corporate events for small groups.

Psychiatry Advisor: What made you decide to pursue ketamine treatment?

Ms Palmer: I was raised in an abusive home, and as an adult I had severe major depression, as well as anxiety. I was treated with medications, such as antidepressants, but they had many adverse events and they ended up making me feel like a zombie, so I discontinued them. I managed okay for a while, but then I had another major depressive episode.

I was receiving psychotherapy at the time and it was only moderately helpful — not enough to stop the episode. Fortunately, I knew someone who works at a ketamine clinic. She told me how many patients had been helped by ketamine and I was interested, mostly because the adverse events of ketamine seemed mild and are not long-term.

Psychiatry Advisor: What were your experiences during your infusion?

Ms Palmer: I felt incredible during the infusion. The best way I can describe it is by referring to the movie Avatar, specifically the scene in which the protagonist is walking through a jungle at night for the first time and touching all the plants, which light up with pretty colors—very vivid, colorful, and not linear. There was the sensation of being on a sort of roller coaster, riding through different scenes.

At one point, it felt as though my chair was on a cloud. Then suddenly, the chair disappeared and I was floating on the cloud. It was a wonderful experience.

Psychiatry Advisor: How did the ketamine treatment affect you afterwards?

Ms Palmer: After only one treatment, it was as if a switch had flipped in my brain that allowed me to digest things and move beyond my trauma. Before the infusion, a lot of what was going on with me had to do with self-esteem issues and negative self-talk. These were behaviors learned over many years. After the infusion, the negative self-talk immediately disappeared. All of those thoughts — such as telling myself I am not good enough — that were preventing me from working through emotional issues, were resolved. I was able to start looking at things more objectively rather than taking them personally, and not take on responsibility for other people’s emotions and reactions.

I am currently working with a therapist and a life coach to help me feel more comfortable with communication because I was raised not to ask for things and to put up with anything I’m asked to do. As a result, I have developed a much more positive outlook of myself and the world.

Psychiatry Advisor: How many ketamine treatments have you had?

Ms Palmer: Over a 6-month period I had 6 treatments, which were all very helpful. Then, 6 months after the conclusion of this first series of treatments, some new issues came up, so I received 2 more — one regular 60-minute treatment and one extended 90-minute treatment.

Recently, with the holidays coming up, I decided to pre-empt the effect of some stressors and have another treatment. My most recent infusion took place the day after my father passed away. I noticed that during the infusion, I was able to steer myself away from negative thoughts about that issue. Although I cannot control what visions or experiences I might have, I do have some control over the direction of my thoughts and the after-effects have been positive and helpful.

Psychiatry Advisor: Did you have any adverse events from the treatments?

Ms Palmer: I had no negative physical effects. I had one mild bad reaction, when I came to the treatment session in an agitated state because I had gotten into a fight with someone right before. I was sad and crying  by the time I finished the infusion. But I was in a bad headspace before I even walked into the room. And my experience was not scary, only sad.

Psychiatry Advisor: What impact has your treatment had on your day-to-day life?

Ms Palmer: My depression had interrupted my schooling. I was in school for 3 and a half years and then I hit a roadblock. After the treatments, I was able to complete my studies and graduated with a BA in business administration and management.

My job is stressful. I counterbalance the stress with hobbies like surfing and photography. But there are still stressors, and I have a dog who is reaching the end of life, which is affecting me. The ketamine treatments have helped me to manage those stressors. 

References

  1. Sanacora G, Frye MA, McDonald W, et al. A consensus statement on the use of ketamine in the treatment of mood disordersJAMA Psychiatry. 2017;74(4):399-405.
  2. Feder A, Parides M, Murrough JW, et al. Efficacy of intravenous ketamine for treatment of chronic posttraumatic stress disorder: a randomized clinical trialJAMA Psychiatry. 2014;71(6):681-688.
  3. Murrough JW, Soleimani L, DeWilde KE, et al. Ketamine for rapid reduction of suicidal ideation: a randomized controlled trialPsychol Med. 2015;45(16):3571-3580.
  4. Wilkinson ST, Ballard ED, Bloch MH, et al. The effect of a single dose of intravenous ketamine on suicidal ideation: a systematic review and individual participant data meta-analysisAm J Psychiatry. 2018;175(2):150-158.
  5. Schwartz J, Murrough JW, Iosifescu DV. Ketamine for treatment-resistant depression: recent developments and clinical applicationsEvid Based Ment Health. 2016;19(2):35-38.
  6. Shadli SM, Kawe T, Martin D, McNaughton N, Neehoff S, Glue P. Ketamine effects on EEG during therapy of treatment-resistant generalized anxiety and social anxiety [published online April 24,2018]. Int J Neuropsychopharmacology. doi:10.1093/ijnp/pyy032
  7. Glue P, Medlicott NJ, Harland S, et al. Ketamine’s dose-related effects on anxiety symptoms in patients with treatment refractory anxiety disorders. J Psychopharmacol. 2017;31(10):1302-1305.
  8. Glue P, Neehoff SM, Medlicott NJ, Gray A, Kibby G, McNaughton N. Safety and efficacy of maintenance ketamine treatment in patients with treatment-refractory generalised anxiety and social anxiety disordersJ Psychopharmacol. 2018;32(6):663-667.
  9. Ionescu DF, Luckenbaugh DA, Niciu MJ, Richards EM, Zarate CA. A single infusion of ketamine improves depression scores in patients with anxious bipolar depressionBipolar Disord. 2014;17(4):438-443.
  10. Bloch MH, Wasylink S, Landeros-Weisenberger A, et al. Effects of ketamine in treatment-refractory obsessive-compulsive disorderBiol Psychiatry. 2012;72(11):964-970.
  11. Rodriguez CI, Kegeles LS, Levinson A, et al. Randomized controlled crossover trial of ketamine in obsessive-compulsive disorder: proof-of-concept. Neuropsychopharmacology. 2013;38(12):2475-2483.
  12. Girgenti MJ, Ghosal S, LoPresto D, Taylor JR, Duman RS. Ketamine accelerates fear extinction via mTORC1 signalingNeurobiol Dis. 2016;100:1-8.
  13. Ito W, Erisir A, Morozov AObservation of distressed conspecific as a model of emotional trauma generates silent synapses in the prefrontal-amygdala pathway and enhances fear learning, but ketamine abolishes those effects. Neuropsychopharmacology. 2015; 40(11):2536-2545.
  14. Fattore L, Piva A, Zanda MT, Fumagalli G, Chiamulera C. Psychedelics and reconsolidation of traumatic and appetitive maladaptive memories: focus on cannabinoids and ketaminePsychopharmacology (Berl). 2018;235(2):433-445.
  15. Donoghue AC, Roback MG, Cullen KR. Remission from behavioral dysregulation in a child with PTSD after receiving procedural ketaminePediatrics. 2015;136(3):e694-e696.
  16. Li L, Vlisides PE. Ketamine: 50 years of modulating the mindFront Hum Neurosci. 2016;10:612.

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Call NOVA Health Recovery at 703-844-0184 for a free consultation for a Ketamine infusion. No referral needed. We offer intranasal Ketamine follow up therapy as well. Alexandria, Va 22306.

Call NOVA Health Recovery at 703-844-0184 for a free consultation for a Ketamine infusion. No referral needed. We offer intranasal Ketamine follow up therapy as well. Alexandria, Va 22306.

VA to offer new ketamine-based nasal spray to help combat depression

The newest FDA-approved medication to treat severe depression, a nasal spray based on the anesthetic (and misused hallucinogenic party drug) ketamine, will soon be available to veterans treated within the Department of Veterans Affairs.

In a move that may help thousands of former service members with depression that has not improved with other treatments, VA officials announced Tuesday that the department’s doctors are now authorized to prescribe Spravato, the brand name for esketamine, a molecular variation of ketamine.

The decision to offer a drug hailed by many as a breakthrough in treatment for its speedy results — often relieving symptoms in hours and days, not weeks — shows the VA’s “commitment to seek new ways to provide the best health care available for our nation’s veterans,” Secretary Robert Wilkie said in a release.

“We’re pleased to be able to expand options for Veterans with depression who have not responded to other treatments,” Wilkie added.

The treatment will be available to veterans based on a physician’s assessment and only will be administered to patients who have tried at least two antidepressant medications and continue to have symptoms of major depressive disorder.

An estimated 16 million Americans have had at least one major episode of depression, and of those, 1 in 3 are considered treatment-resistant. In the veteran population of 20 million, the estimated diagnosis rate of depression is 14 percent — up to 2.8 million veterans. Between one-third and half of those veterans may be treatment-resistant.

The lack of effective medications for difficult-to-treat patients prompted the Food and Drug Administration to place esketamine on a fast track, expediting its review of the drug to ensure that it went to patent as soon as safely possible, according to administration officials.

“Controlled clinical trials that studied the safety and efficacy of this drug, along with careful review through the FDA’s drug approval process, including a robust discussion with our external advisory committees, were important in our decision to approve this treatment,” said Dr. Tiffany Farchione, acting director of the FDA’s Center for Drug Evaluation and Research Division of Psychiatry Products, in a release.

As with any other medication, there are risks. Spravato carries a boxed warning for side effects that include misuse, the reason it is administered under a doctor’s supervision. The list of side effects includes sedation and blood pressure spikes and disassociation, such as feelings of physical paralysis and out-of-body experiences. It also can cause suicidal thoughts and behaviors.

Acknowledging the dangers, FDA made esketamine available only through a restricted distribution system.

A veteran prescribed Spravato would inhale the nasal spray at a medical facility while under supervision of a medical provider, and would be monitored for at least two hours after receiving the dose. A typical prescription includes twice-weekly doses the first month, followed by a single dose weekly or biweekly as needed. Spravato cannot be dispensed for home use.

Spravato is made by Janssen Pharmaceuticals, a subsidiary of Johnson & Johnson. It is the first major antidepressant medication to hit the market in 30 years.



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NOVA Health Recovery | Alexandria, Va 22306 | Call for esketamine and nasal ketamine as well as IV Ketamine for depression, PTSD, anxiety  703-844-0184 < Link

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Twitter feed Ketamine – Ablow

Ketamine Seems to Ease Depression. We’ll Soon See What Else It Does.

Clinical trials are not enough to prove any drug is safe and effective – especially one that could be as widely used as Johnson & Johnson’s depression drug esketamine, a slightly altered form of the street drug ketamine. The FDA approval process is a balancing act, weighing safety and efficacy testing against the need to get potentially life-saving drugs out as soon as possible.

An advisory panel to the FDA decided this month that the benefits outweigh the risks, and approval is expected soon. But scientists who study depression say there’s a lot more to learn about esketamine’s long-term effects.

While best known as a recreational drug, ketamine has been used since the 1970s as an anesthetic, in doses much higher than what’s likely to be given to depression patients. The trials so far seem to show that the drug is not highly addictive, according to a story in the medical website STAT. But time will tell.

The most promising clinical trials followed people whose depression had been resistant to conventional therapy. Fifty percent of patients improved when given conventional therapy plus a placebo, as compared to 70 percent who got conventional therapy and esketamine.

Taking the drug will be a lot more complicated than taking Prozac. It’s been formulated so that it can be delivered as a nasal spray, but people have to get the drug at a doctor’s office, and they won’t be allowed to drive for at least 24 hours, said Gerard Sanacora, a Yale University psychiatrist who has been involved in the clinical trials.

He said he believes there’s potential for benefit, because the drug works for some people who get no relief from conventional treatments and because works faster, which might even prevent suicide. But there’s a lot more to learn about the drug’s potential long-term consequences. So far it looks like people will get two treatments a week to start, then one for maintenance. But scientists don’t know whether it can be tapered down further, or discontinued, and whether there’s a risk for relapse, he said.

Sanacora said that ketamine is based on a very different model of how depression works. Standard therapy is based on the principle that depression is a chemical imbalance involving the transmitting chemical serotonin. But an alternative view started to take shape in the 1990s that depression was more of a problem with the connections between neurons, triggered by chronic stress and mediated by something called the glutaminergic system.

Because ketamine interacts with this system, researchers started testing it as a depression drug. Although it seems effective, there’s still no agreement on how depression actually works – and there is some concern that it might work very differently in different patients.

Ketamine can affect cardiovascular health, and in the short term can cause patients to lose their sense of their bodies’ position in space – the sense of proprioception. They sometimes feel their arms are floating.

That hasn’t stopped people from flocking to clinics to get treated with IV ketamine infusions for depression and other problems. This is legal because the drug is approved for anesthesia, and prescribers can use it off-label for other purposes. An investigation by the medical website STAT raised concerns that clinic staff didn’t have the necessary expertise, and there was considerable marketing hype in many cases. The infusions cost between $350 and $1,000 each, and can go on for five or six treatments.

Another red flag popped up last week when the Boston Globe ran a storyabout three women who claim to have been sexually abused by psychiatrist Keith Ablow – a frequent commentator for Fox News. The Globe reported that Ablow was treating the women with ketamine, and one expert cited in the lawsuits said a patient had become “very dependent on this medication and dependent on Dr. Ablow to supply it.”

Ablow’s Twitter feed is full of positive stories about ketamine in places such as Reader’s Digest, followed by a phone number to call for a “free ketamine screening.” The allegations illustration that it’s not just patients that will need to be tracked for abuse, but the doctors as well.

On the positive side, FDA approval would give patients who want the drug a standardized treatment that would be covered by many insurance plans. Approval also creates an opportunity to collect data on longer-term use. (An earlier column exploring the promise of big data in medicine points out that clinical trials are often not long-running enough or big enough to catch even deadly side effects.)

Yale’s Sanacora thinks of the next series of trials as Phase 4. Sanacora also brought up what he poignantly called the “Flowers for Algernon” effect, referring to the short story in which the main character, Charlie Gordon, is treated for an intellectual disability. The treatment works, but eventually wears off, leaving Charlie back where he started. The disappointment makes for a tragic tale. An arc like this would be the last thing depression patients need – though if no other treatment is helping, it might be a risk worth taking.

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NOVA Health Recovery | Alexandria, Va 22306 | Call for esketamine and nasal ketamine as well as IV Ketamine for depression, PTSD, anxiety  703-844-0184 < Link

Ketamine Virginia Link

NOVA Health Recovery | Alexandria, Va 22306 | Call for esketamine and nasal ketamine as well as IV Ketamine for depression, PTSD, anxiety  703-844-0184 < Link

Ketamine Virginia Link

Ketamine Works as a Fast-Acting Antidepressant, But the Full Effects Are Still Unknown

Ketamine Works as a Fast-Acting Antidepressant, But the Full Effects Are Still Unknown

etamine leads something of a double life, straddling the line between medical science and party drug. Since it’s invention in the early 1960s, ketamine has enjoyed a quiet existence as a veterinary and pediatric anesthetic given in high doses. But in a second, wilder life, ketamine’s effects at lower doses—a profound sense of dissociation from self and body—became an illicit favorite among psychedelic enthusiasts. Pioneering neuroscientist John Lilly, who famously attempted to facilitate communication between humans and dolphins, used the drug in the late 1970s during experiments in sensory deprivation tanks. By the 1990s, the drug had made its way to the dance floor as “special K.”

More recently, ketamine has taken on a third, wholly unexpected role. Since the early 2000s, the drug has been studied as a uniquely powerful medication for treating severe depression and obsessive-compulsive disorder (OCD). When given as an intravenous infusion, ketamine can lift symptoms of depression and OCD from patients who fail to respond to common antidepressants like Prozac and even resist treatments like electroconvulsive therapy (ECT).

Exactly how ketamine produces antidepressant effects remains unclear, however. Antidepressants like Prozac are Serotonin Reuptake Inhibitors (SSRIs) that increase levels of the neurotransmitter serotonin in the brain, which is believed to boost mood. Ketamine’s main mechanism of action to produce dissociative anesthetic effects, on the other hand, depends on another neurotransmitter, glutamate.

“The prevailing hypothesis for ketamine’s antidepressant effect is that it blocks a receptor (or docking port) for glutamate,” says Carolyn Rodriguez, a professor of psychiatry at Stanford who has conducted some of the pioneering research into ketamine as an OCD treatment.

However, new research suggests that ketamine’s influence on glutamate receptors, and specifically the NMDA receptor, may not be the sole cause of its antidepressant effects. According to a recent study in the American Journal of Psychiatry by Rodriguez and her Stanford colleagues, ketamine might also activate a third system in the brain: opioid receptors.

Ketamine is known to bind weakly to the mu opioid receptor, acting as an agonist to produce a physiological response at the same site in the brain where narcotics like morphine exert their influence. It’s also known that opioids can have antidepressant effects, says Alan Schatzberg, a professor of psychiatry at Stanford and co-author of the new study.

It never made sense to Schatzberg that ketamine’s antidepressant effects were a result of blocking the glutamate receptors, as attempts to use other glutamate-blocking drugs as antidepressants have largely failed. The Stanford psychiatrist, who has spent his career studying depression, wondered if researchers were unknowingly activating opioid receptors with ketamine.

“You could test this by using an antagonist of the opioid system to see if you blocked the effect in people who are ketamine responders,” he says. “And that’s what we did.”

The researchers enlisted 12 subjects with treatment-resistant depression and gave them either an infusion of ketamine preceded by a placebo, or ketamine preceded by a dose of naltrexone, an opioid receptor blocker. Of those, seven subjects responded to the ketamine with placebo, “and it was very dramatic,” Schatzberg says, with depression lifting by the next day. “But in the other condition, they showed no effect,” suggesting it was the opioid receptor activity, not blocking glutamate receptors, that was responsible.

While opioid blockers prevented ketamine from activating the associated receptors, it did not block the drugs dissociative effects, suggesting dissociation alone won’t affect depression. “It’s not that, ‘hey, we’ll get you a little weird and you’ll get the effect,’” Schatzberg says.

The appeal of ketamine’s use as an antidepressant is clear enough. While more typical antidepressants may require six to eight weeks to produce benefits, ketamine works within hours.

“Our patients are asked to hang in there until the medication and talk therapy takes effect,” says Carlos Zarate, chief of the experimental therapeutics and pathophysiology branch of the National Institute of Mental Health (NIMH) who was not associated with the new study. While waiting for traditional treatments to kick in, patients “may lose their friends or even attempt suicide.”

But the study linking ketamine to opioid activity means an extra dose of caution is required. While ketamine acts quickly, the anti-depressive effects of the drug only last for a few days to a week, meaning repeat doses would be needed in practice. Researchers and clinicians should consider the risk of addiction in long-term use, Schatzberg says. “You’re going to eventually get into some form of tolerance I think, and that’s not good.”

However, the new finding is based on just seven subjects, and it still needs to be replicated by other scientists, says Yale professor of psychiatry Greg Sanacora, who was not involved in the new study. And even if the trial is replicated, it would not prove ketamine’s opioid activity is responsible for its antidepressant effects.

“It doesn’t show that at all,” says Sanacora, who studies glutamate, mood disorders and ketamine. “It shows that the opioid system needs to be functioning in order to get this response.”

Sanacora compares the new study to using antibiotics to treat an ear infection. If you administered an additional drug that blocks absorption of antibiotics in the stomach, you would block treatment of the ear infection, but you wouldn’t conclude that antibiotics fight ear infections through stomach absorption—you just need a normally functioning stomach to allow the antibiotic to do its job. Similarly, opioid receptors might need to be functioning normally for ketamine to produce antidepressant effects, even if opioid activity is not directly responsible for those effects.

Complicating matters further, placebos often cause patients to experience less pain, but opioid blockers like naltrexone have been shown to prevent this response, according to Sanacora. It could be, he suggests, that all the apparatus of the clinic—the nursing staff, the equipment—exerted a placebo effect that is mediated by the brain’s opioid system, and the patients who received naltrexone simply did not respond to that placebo effect

“That’s a very important and powerful tool that is in all of medicine, not just in psychiatry,” Sanacora says. “And we know that the opiate system is involved, to some extent, in that type of response.”

It’s also possible, the researchers note in the paper, that ketamine’s action at the glutamate receptor is still important. “Ketamine acts in three distinct phases—rapid effects, sustained effects and return to baseline,” Rodriguez says. Opioid signaling may turn out to mediate ketamine’s rapid effects, while “the glutamate system may be responsible for the sustaining effects after ketamine is metabolized.”

One interpretation is that ketamine blocks glutamate receptors on neurons that are inhibitory, meaning they signal other neurons to fire fewer signals. By blocking these neurons from firing, ketamine may enhance glutamate activity in the rest of the brain, producing anti-depressive effects that persist after the opioid activity dies down.

“The reality is it’s in a gray zone,” Sanacora says. “This is just one small piece of a very large puzzle or concern that we really need to look at the data in total.”

That data is forthcoming. Results from a Janssen Pharmaceuticals clinical trial using esketamine, an isomer of ketamine, and involving hundreds of subjects will soon become public, according to Sanacora, who has consulted for the company. And at NIMH, Zarate and colleagues are studying hydroxynorketamine, a metabolite of ketamine that may provide the same benefits but without the dissociative side effects

Ketamine Works as a Fast-Acting Antidepressant, But the Full Effects Are Still Unknown

A new study suggests that ketamine activates the brain’s opioid receptors, complicating its use to treat clinical depression

Ketamine Syringe
Ketamine syringe, 10mg held by a healthcare professional. (Peter Cripps / Alamy Stock Photo)

By Jon KelveySEPTEMBER 11, 2018777110231.1K

Ketamine leads something of a double life, straddling the line between medical science and party drug. Since it’s invention in the early 1960s, ketamine has enjoyed a quiet existence as a veterinary and pediatric anesthetic given in high doses. But in a second, wilder life, ketamine’s effects at lower doses—a profound sense of dissociation from self and body—became an illicit favorite among psychedelic enthusiasts. Pioneering neuroscientist John Lilly, who famously attempted to facilitate communication between humans and dolphins, used the drug in the late 1970s during experiments in sensory deprivation tanks. By the 1990s, the drug had made its way to the dance floor as “special K.”

More recently, ketamine has taken on a third, wholly unexpected role. Since the early 2000s, the drug has been studied as a uniquely powerful medication for treating severe depression and obsessive-compulsive disorder (OCD). When given as an intravenous infusion, ketamine can lift symptoms of depression and OCD from patients who fail to respond to common antidepressants like Prozac and even resist treatments like electroconvulsive therapy (ECT).

Exactly how ketamine produces antidepressant effects remains unclear, however. Antidepressants like Prozac are Serotonin Reuptake Inhibitors (SSRIs) that increase levels of the neurotransmitter serotonin in the brain, which is believed to boost mood. Ketamine’s main mechanism of action to produce dissociative anesthetic effects, on the other hand, depends on another neurotransmitter, glutamate.

“The prevailing hypothesis for ketamine’s antidepressant effect is that it blocks a receptor (or docking port) for glutamate,” says Carolyn Rodriguez, a professor of psychiatry at Stanford who has conducted some of the pioneering research into ketamine as an OCD treatment.

However, new research suggests that ketamine’s influence on glutamate receptors, and specifically the NMDA receptor, may not be the sole cause of its antidepressant effects. According to a recent study in the American Journal of Psychiatry by Rodriguez and her Stanford colleagues, ketamine might also activate a third system in the brain: opioid receptors.

Ketamine is known to bind weakly to the mu opioid receptor, acting as an agonist to produce a physiological response at the same site in the brain where narcotics like morphine exert their influence. It’s also known that opioids can have antidepressant effects, says Alan Schatzberg, a professor of psychiatry at Stanford and co-author of the new study.

It never made sense to Schatzberg that ketamine’s antidepressant effects were a result of blocking the glutamate receptors, as attempts to use other glutamate-blocking drugs as antidepressants have largely failed. The Stanford psychiatrist, who has spent his career studying depression, wondered if researchers were unknowingly activating opioid receptors with ketamine.

“You could test this by using an antagonist of the opioid system to see if you blocked the effect in people who are ketamine responders,” he says. “And that’s what we did.”

The researchers enlisted 12 subjects with treatment-resistant depression and gave them either an infusion of ketamine preceded by a placebo, or ketamine preceded by a dose of naltrexone, an opioid receptor blocker. Of those, seven subjects responded to the ketamine with placebo, “and it was very dramatic,” Schatzberg says, with depression lifting by the next day. “But in the other condition, they showed no effect,” suggesting it was the opioid receptor activity, not blocking glutamate receptors, that was responsible.

While opioid blockers prevented ketamine from activating the associated receptors, it did not block the drugs dissociative effects, suggesting dissociation alone won’t affect depression. “It’s not that, ‘hey, we’ll get you a little weird and you’ll get the effect,’” Schatzberg says.

The appeal of ketamine’s use as an antidepressant is clear enough. While more typical antidepressants may require six to eight weeks to produce benefits, ketamine works within hours.

“Our patients are asked to hang in there until the medication and talk therapy takes effect,” says Carlos Zarate, chief of the experimental therapeutics and pathophysiology branch of the National Institute of Mental Health (NIMH) who was not associated with the new study. While waiting for traditional treatments to kick in, patients “may lose their friends or even attempt suicide.”

<

A treatment that works within 24 hours? “That’s huge.”

A vial of ketamine. The drug is used primarily as an anesthetic but is gaining popularity as an effective antidepressant.
A vial of ketamine. The drug is used primarily as an anesthetic but is gaining popularity as an effective antidepressant. (Wikimedia Commons)

But the study linking ketamine to opioid activity means an extra dose of caution is required. While ketamine acts quickly, the anti-depressive effects of the drug only last for a few days to a week, meaning repeat doses would be needed in practice. Researchers and clinicians should consider the risk of addiction in long-term use, Schatzberg says. “You’re going to eventually get into some form of tolerance I think, and that’s not good.”

However, the new finding is based on just seven subjects, and it still needs to be replicated by other scientists, says Yale professor of psychiatry Greg Sanacora, who was not involved in the new study. And even if the trial is replicated, it would not prove ketamine’s opioid activity is responsible for its antidepressant effects.

“It doesn’t show that at all,” says Sanacora, who studies glutamate, mood disorders and ketamine. “It shows that the opioid system needs to be functioning in order to get this response.”

Sanacora compares the new study to using antibiotics to treat an ear infection. If you administered an additional drug that blocks absorption of antibiotics in the stomach, you would block treatment of the ear infection, but you wouldn’t conclude that antibiotics fight ear infections through stomach absorption—you just need a normally functioning stomach to allow the antibiotic to do its job. Similarly, opioid receptors might need to be functioning normally for ketamine to produce antidepressant effects, even if opioid activity is not directly responsible for those effects.

Complicating matters further, placebos often cause patients to experience less pain, but opioid blockers like naltrexone have been shown to prevent this response, according to Sanacora. It could be, he suggests, that all the apparatus of the clinic—the nursing staff, the equipment—exerted a placebo effect that is mediated by the brain’s opioid system, and the patients who received naltrexone simply did not respond to that placebo effect.

“That’s a very important and powerful tool that is in all of medicine, not just in psychiatry,” Sanacora says. “And we know that the opiate system is involved, to some extent, in that type of response.”

It’s also possible, the researchers note in the paper, that ketamine’s action at the glutamate receptor is still important. “Ketamine acts in three distinct phases—rapid effects, sustained effects and return to baseline,” Rodriguez says. Opioid signaling may turn out to mediate ketamine’s rapid effects, while “the glutamate system may be responsible for the sustaining effects after ketamine is metabolized.”

One interpretation is that ketamine blocks glutamate receptors on neurons that are inhibitory, meaning they signal other neurons to fire fewer signals. By blocking these neurons from firing, ketamine may enhance glutamate activity in the rest of the brain, producing anti-depressive effects that persist after the opioid activity dies down.

“The reality is it’s in a gray zone,” Sanacora says. “This is just one small piece of a very large puzzle or concern that we really need to look at the data in total.”

That data is forthcoming. Results from a Janssen Pharmaceuticals clinical trial using esketamine, an isomer of ketamine, and involving hundreds of subjects will soon become public, according to Sanacora, who has consulted for the company. And at NIMH, Zarate and colleagues are studying hydroxynorketamine, a metabolite of ketamine that may provide the same benefits but without the dissociative side effects.

The ultimate goal of all this research is to find a ketamine-like drug with fewer liabilities, and that aim is bringing researchers back to the fundamentals of science.

“For me, one of the exciting parts of this study is that it suggests that ketamine’s mechanism is complicated, it acts on different receptors beyond glutamate and is the start of this exciting dialogue,” Rodriguez says. “Sometimes great science raises more questions than answers.”









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Ketamine Virginia Link

NOVA Health Recovery | Alexandria, Va 22306 | Call for esketamine and nasal ketamine as well as IV Ketamine for depression, PTSD, anxiety  703-844-0184 < Link

Ketamine Virginia Link New depression drug related to ketamine recommended by FDA panel An experimental nasal spray, which has a compound similar to the“club drug” ketamine, has been recommended as a new depression treatment by an advisory panel to the Food and Drug Administration Tuesday. The influential panel voted 14-2 in favor of Johnson & Johnson’s drug esketamine, a treatment developed to treat major depression in patients who have not benefited from at least two different therapies. The panel said the benefits of the nasal spray outweighed the risks. Side effects include dizziness, nausea and an unpleasant feeling of dissociation, according to the company. One member in the panel abstained from voting. Esketamine is a variation of the anesthetic ketamine, which is also abused as a recreational party drug with the street name Special K. Intravenous infusions of ketamine have been shown to help people with severe depression who experience suicidal thoughts, but the researchers expect that the nasal spray will take effect more quickly and be easier to use. “I think esketamine has the potential to be a game-changer in the treatment of depression … I use the term potential because the issues of cost and patient accessibility need to be addressed,” said Walter Dunn, a panel member who voted in favor of the approval The nasal spray acts quickly, showing benefits after four hours. The hope is that the spray can help the 30 percent to 40 percent of patients with major depression who don’t respond to antidepressants, most of which take at least four weeks to take effect. Currently, Eli Lilly’s Symbyax is the only FDA-approved drug for treatment-resistant depression. Major depressive disorder affects over 300 million people globally, and the rate of attempted suicides in people with this condition is about 20-fold higher than that of the general population, according to the company. However, depression is a tricky area of development. Patients in clinical trials often show a big placebo response, masking the efficacy of the drug being tested. The FDA, although not mandated to follow the panel’s recommendation, is expected to announce its decision on esketamine by March 4 blob:https://www.nbcnews.com/7ff5f695-0a1d-45c4-95f5-12627211ac08 New depression drug related to ketamine recommended by FDA panel An experimental nasal spray, which has a compound similar to the“club drug” ketamine, has been recommended as a new depression treatment by an advisory panel to the Food and Drug Administration Tuesday. The influential panel voted 14-2 in favor of Johnson & Johnson’s drug esketamine, a treatment developed to treat major depression in patients who have not benefited from at least two different therapies. The panel said the benefits of the nasal spray outweighed the risks. Side effects include dizziness, nausea and an unpleasant feeling of dissociation, according to the company. One member in the panel abstained from voting. Esketamine is a variation of the anesthetic ketamine, which is also abused as a recreational party drug with the street name Special K. Intravenous infusions of ketamine have been shown to help people with severe depression who experience suicidal thoughts, but the researchers expect that the nasal spray will take effect more quickly and be easier to use. “I think esketamine has the potential to be a game-changer in the treatment of depression … I use the term potential because the issues of cost and patient accessibility need to be addressed,” said Walter Dunn, a panel member who voted in favor of the approval The nasal spray acts quickly, showing benefits after four hours. The hope is that the spray can help the 30 percent to 40 percent of patients with major depression who don’t respond to antidepressants, most of which take at least four weeks to take effect. Currently, Eli Lilly’s Symbyax is the only FDA-approved drug for treatment-resistant depression. Major depressive disorder affects over 300 million people globally, and the rate of attempted suicides in people with this condition is about 20-fold higher than that of the general population, according to the company. However, depression is a tricky area of development. Patients in clinical trials often show a big placebo response, masking the efficacy of the drug being tested. The FDA, although not mandated to follow the panel’s recommendation, is expected to announce its decision on esketamine by March 4 blob:https://www.nbcnews.com/7ff5f695-0a1d-45c4-95f5-12627211ac08

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NOVA Health Recovery | Alexandria, Va 22306 | Call for esketamine and nasal ketamine as well as IV Ketamine for depression, PTSD, anxiety  703-844-0184 < Link

Ketamine Virginia Link

NOVA Health Recovery | Alexandria, Va 22306 | Call for esketamine and nasal ketamine as well as IV Ketamine for depression, PTSD, anxiety  703-844-0184 < Link

Ketamine Virginia Link

Ketamine-like depression treatment on track for FDA approval

CNN)A ketamine-like drug for treatment-resistant depression was backed by a US Food and Drug Administration advisory committee on Tuesday. If it is then approved by the FDA, the drug — called esketamine — may provide a new option for patients with major depressive disorder who have tried at least two other antidepressants without success.A panel of experts voted to endorse the drug, which is made in nasal spray form by the pharmaceutical company Janssen, a division of Johnson & Johnson. Fourteen members voted that the benefits outweighed the risk, with two opposed and one abstaining.

Ketamine offers lifeline for people with severe depression, suicidal thoughts
703-844-0184 | NOVA Health Recovery | Alexandria, Va 22306

Ketamine offers lifeline for people with severe depression, suicidal thoughtsThe drug is a close relative of ketamine, a powerful medication used in hospitals primarily as an anesthetic; recent scientific studies have also shown its potential with treatment-resistant depression and suicidal ideation. Ketamine is also used recreationally — and illegally — as a club drug known as Special K. It generates an intense high and dissociative effects.Esketamine, which is not FDA-approved for any conditions, targets a different brain pathway than approved antidepressants, many of which have been around for decades. It is expected to be used in combination with antidepressants, but the latter can take a month or two to take effect. Esketamine, on the other hand, might have an effect within hours or days, according to an FDA briefing document.The drug was designated as a breakthrough therapy in 2013, intending to “expedite the development and review of drugs for serious or life-threatening conditions,” the FDA says. First-line treatments don’t work for roughly 30% to 40% of patients with major depressive disorder, according to the briefing document.The FDA does not have to follow the recommendation of advisory committees, though it often does.

ERs 'flooded' with mentally ill patients with no place else to turn

ERs ‘flooded’ with mentally ill patients with no place else to turnHowever, the research behind esketamine has come under some criticism, with two of five key studies failing to meet their primary endpoints. Only one of these studies is a positive short-term trial, whereas most FDA-approved antidepressants are backed by at least two, according to the briefing document. But Janssen has maintained that the overall picture is positive.Adverse events tended to occur in the first two hours patients received the drug, including sedation, blood pressure increases and dissociation. For this reason, patients wouldn’t be able to pick it up at a local pharmacy; it would be given under the supervision of health care professionals who can keep an eye on the person during those first two hours.Because of the drug’s close relationship to ketamine, experts have also raised concerns about its potential for misuse and abuse. The clinical trials have not seen evidence of this risk, according to presentations made during the meeting.Advisory panelists also expressed concern that not enough long-term data was available to characterize the drug’s cognitive effects and other health impacts down the line.Get CNN Health’s weekly newsletter

There were six deaths of patients taking esketamine in trials, including three suicides, but FDA materials concluded “it is difficult to consider these deaths as drug-related.”The only current FDA-approved medication for treatment-resistant depression combines two other drugs already on the market. Other non-pharmaceutical treatments exist, such as electroconvulsive therapy.Janssen spokesman Greg Panico said no information about pricing would be available at this time. An FDA decision is expected in early March, he added.



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NOVA Health Recovery | Alexandria, Va 22306 | Call for esketamine and nasal ketamine as well as IV Ketamine for depression, PTSD, anxiety  703-844-0184

Combined Treatment With Naltrexone, Ketamine Effective for Depressive Symptoms

Ketamine
Participants who received the naltrexone and ketamine regimen reported an improvement in depressive symptoms.

The effectiveness of ketamine as an antidepressant has been mitigated by concerns of possible abuse and suggestions that the antidepressant effects might be dependent on opiate receptor stimulation. However, results from a case series published in JAMA Psychiatry support the efficacy of combined naltrexone and ketamine treatment for depressive symptoms.

Investigators conducted an 8-week open-label pilot study of 5 patients with current major depressive disorder and alcohol use disorder. Patients received a single dose of injectable naltrexone (380 mg) 2 to 6 days prior to the first ketamine treatment, followed by 4 weeks of ketamine infusions (0.5 mg/kg once a week). Patients were assessed at baseline and at 4 hours after each infusion with the Montgomery Åsberg Depression Rating Scale. The primary outcome measure was a 50% or higher improvement from baseline Montgomery Åsberg Depression Rating Scale score. All patients were abstinent from alcohol for 5 days or longer prior to the initial ketamine infusion.

Combined treatment with naltrexone and ketamine was associated with a significant reduction in depressive symptoms. Three of 5 patients (60%) met response criteria following initial ketamine dose, and 5 of 5 patients (100%) met response criteria by the fourth dose, although 1 patient left the trial following 2 ketamine infusions. Symptoms improved by 57% to 92%, depending on the patient. In addition, 4 of 5 patients (80%) reported a reduction in alcohol craving and consumption per the Obsessive Compulsive Drinking Scale. Combined treatment was safe and well tolerated. No serious adverse events were reported in the trial.

These results challenge existing data that pretreatment with naltrexone may interfere with the antidepressant properties of ketamine. Research with a larger cohort is necessary to further investigate the efficacy of combination treatment with naltrexone and ketamine for depression.

Reference

Yoon G, Petrakis IL, Krystal JH. Association of combined naltrexone and ketamine with depressive symptoms in a case series of patients with depression and alcohol use disorder [published online January 9, 2019]. JAMA Psychiatry. doi: 10.1001/jamapsychiatry.2018.3990

Association of Combined Naltrexone and Ketamine with depressive symptoms in a case series of patients with depression and AUD

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NEW VARIATION OF KETAMINE TO BE APPROVED BY FDA FOR TREATMENT OF DEPRESSION

“The biggest breakthrough in depression treatment since Prozac”

  • 6 FEBRUARY 2019
New variation of ketamine to be approved by FDA for treatment of depression

Back in July of 2017, the world’s first ketamine trial for depression proved to be “incredibly effective” in curing elderly patients. The drug, often referred to as Special K, is a popular substance found clubland culture, but recent breakthrough studies and the development of chemical variations of ketamine has shown that the drug is a powerful tool that can help save lives and allow people to live life to the fullest potential.

According to Bloomberg, the Food and Drug Administration (FDA) has cleared the way for the first drug based on ketamine, from Johnson & Johnson, to gain approval as soon as March 2019. The ketamine variant, called esketamine, may very well become the first-ever rapid-acting antidepressant for suicidal patients and “treatment-resistant depression”. While physicians are still unsure about the long term effects of the drug and more trials need to be conducted in order to get to the root of its effectiveness, many doctors think esketamine may be “the biggest breakthrough in depression treatment since Prozac”.

The long-form story published in Bloomberg tells the stories of multiple people who have benefited from ketamine treatment and how the rapid development of this new miracle drug is being used to combat the skyrocketing rate of suicide in the United States (up 33 per cent in the last 20 years).

The drug esketamine provides “a quick molecular reset button for brains impaired by stress or depression”. Initially developed as an intravenous drug, Johnson & Johnson has developed a nasal solution that has the same effect. The initial study of the drug involved 68 people at high risk that were all antidepressants and other treatment – no placebos were used on actively suicidal patients. Of those who were given esketamine, 40 per cent were deemed “no longer at risk of killing themselves within 24 hours”.

As physicians and investors race to find out more about this supposed miracle drug, concerns remain that a new abuse crisis – similar to that of the current opioid crisis – may arise following federal approval of the substance.

Check out the captivating story behind these successful studies here

Learn more about ketamine’s colorful clubland history here.

Find out how we survived an unconventional, silly, hilarious and definitely brilliant musical about ketamine here.

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