Researchers find clues that depression may speed brain aging

In continuation of my updates on depression and its causes

Memory and thinking skills naturally slow with age but now scientists are peeking inside living brains to tell if depression might worsen that decline—and finding some worrisome clues. Depression has long been linked to certain cognitive problems, and depression late in life even may be a risk factor for the development of Alzheimer's. Yet how depression might harm cognition isn't clear.

One possibility: Brain cells communicate by firing messages across connections called synapses. Generally, good cognition is linked to more and stronger synapses. With cognitive impairment, those junctions gradually shrink and die off. But until recently, scientists could count synapses only in brain tissue collected after death.

Yale University scientists used a new technique to scan the brains of living people—and discovered that patients with depression had a lower density of synapses than healthy people the same age.

The lower the density, the more severe the depression symptoms, particularly problems with attention and loss of interest in previously pleasurable activities, Yale neuroscientist Irina Esterlis said Thursday at a meeting of the American Association for the Advancement of Science. She wasn't studying just seniors but a range of ages including people too young for any cognitive changes to be obvious outside of a brain scan—on the theory that early damage can build up.

"We think depression might be accelerating the normal aging," she said.

Her studies so far are small. To prove if depression really worsens that decline would require tracking synaptic density in larger numbers of people as they get older, to see if and how it fluctuates over time in those with and without depression, cautioned Jovier Evans, a staff scientist at the National Institute on Mental Health.

Esterlis is planning a larger study to do that. It's delicate research. Volunteers are injected with a radioactive substance that binds to a protein in the vesicles, or storage bins, used by synapses. Then during a PET scan, areas with synapses light up, allowing researchers to see how many are in different regions of the brain.

Esterlis said there are no medications that specifically target the underlying synapse damage.

But other brain experts said the preliminary findings are a reminder of how important it is to treat depression promptly, so people don't spend years suffering.

"If your mood isn't enough to make you go and get treated, then hopefully your cognition is," said Dr. Mary Sano, who directs the Mount Sinai Alzheimer's Disease Research Center in New York and wasn't involved in the new research.

Still, she cautioned that normal cognitive aging is a complicated process that involves other health problems, such as heart disease that slows blood flow in the brain. It might be that depression, rather than worsening synaptic decline, just makes it more obvious, Sano noted.

With depression "at any age, there's a hit on the brain. At an older age the hit may be more visible because there may already be some loss," she explained.

Indeed, another way the brain ages: The blood-brain barrier, which normally protects against infiltration of damaging substances, gradually breaks down, Daniela Kaufer of the University of California, Berkeley, told the AAAS meeting. That triggers inflammation, setting off a cascade that can cause cognitive impairment. Her lab found a specific molecular culprit and is developing, in studies with mice, a way to block the inflammatory damage.

The University of Toronto's Etienne Sibille is developing a compound to target yet another piece of the puzzle, brain receptors that are impaired with both aging and depression. Mouse studies showed it could reverse stress-induced memory loss, he said. Any human testing is at least several years away.

--------------------------------------------------------------------------------------------------------------------------

Researchers find clues that depression may speed brain aging

Magic mushroom compound psilocybin could provide new avenue for antidepressant research

In continuation of my update on psilocybin

The small feasibility trial, which involved 12 people with treatment-resistant depression, found that psilocybin was safe and well-tolerated and that, when given alongside supportive therapy, helped reduce symptoms of depression in about half of the participants at 3 months post-treatment. The authors warn that strong conclusions cannot be made about the therapeutic benefits of psilocybin but the findings show that more research in this field is now needed.

"This is the first time that psilocybin has been investigated as a potential treatment for major depression," says lead author Dr Robin Carhart-Harris, Imperial College London, London, UK. "Treatment-resistant depression is common, disabling and extremely difficult to treat. New treatments are urgently needed, and our study shows that psilocybin is a promising area of future research. The results are encouraging and we now need larger trials to understand whether the effects we saw in this study translate into long-term benefits, and to study how psilocybin compares to other current treatments."

Depression is a major public health burden, affecting millions of people worldwide and costing the US alone over $200 billion per year. The most common treatments for depression are cognitive behaviour therapy (CBT) and antidepressants. However, 1 in 5 patients with depression do not respond to any intervention, and many relapse.

"Previous animal and human brain imaging studies have suggested that psilocybin may have effects similar to other antidepressant treatments," says Professor David Nutt, senior author from Imperial College London "Psilocybin targets the serotonin receptors in the brain, just as most antidepressants do, but it has a very different chemical structure to currently available antidepressants and acts faster than traditional antidepressants."

The trial involved 12 patients (6 women, 6 men) with moderate to severe depression (average length of illness was 17.8 years). The patients were classified as having treatment-resistant depression, having previously had two unsuccessful courses of antidepressants (lasting at least 6 weeks). Most (11) had also received some form of psychotherapy. Patients were not included if they had a current or previous psychotic disorder, an immediate family member with a psychotic disorder, history of suicide or mania or current drug or alcohol dependence.

Patients attended two treatment days -- a low (test) dose of psilocybin 10mg oral capsules, and a higher (therapeutic) dose of 25mg a week later. Patients took the capsules while lying down on a ward bed, in a special room with low lighting and music, and two psychiatrists sat either side of the bed. The psychiatrists were present to provide support and check in on patients throughout the process by asking how they were feeling. Patients had an MRI scan the day after the therapeutic dose. They were followed up one day after the first dose, and then at 1, 2, 3, and 5 weeks and 3 months after the second dose.

The psychedelic effects of psilocybin were detectable 30 to 60 minutes after taking the capsules. The psychedelic effect peaked at 2-3 hours, and patients were discharged 6 hours later. No serious side effects were reported, and expected side effects included transient anxiety before or as the psilocybin effects began (all patients), some experienced confusion (9), transient nausea (4) and transient headache (4). Two patients reported mild and transient paranoia.

At 1 week post-treatment, all patients showed some improvement in their symptoms of depression. 8 of the 12 patients (67%) achieved temporary remission. By 3 months, 7 patients (58%) continued to show an improvement in symptoms and 5 of these were still in remission. Five patients showed some degree of relapse.

The patients knew they were receiving psilocybin (an 'open-label' trial) and the effect of psilocybin was not compared with a placebo. The authors also stress that most of the study participants were self-referred meaning they actively sought treatment, and may have expected some effect (5 had previously tried psilocybin before). All patients had agreement from their GP to take part in the trial. They add that patients were carefully screened and given psychological support before, during and after the intervention, and that the study took place in a positive environment. Further research is now needed to tease out the relative influence of these factors on symptoms of depression, and look at how psilocybin compares to placebo and other current treatments.

Writing in a linked Comment, Professor Philip Cowen, MRC Clinical Scientist, University of Oxford, Oxford, UK, says: "The key observation that might eventually justify the use of a drug like psilocybin in treatment-resistant depression is demonstration of sustained benefit in patients who previously have experienced years of symptoms despite conventional treatments, which makes longer-term outcomes particularly important. The data at 3 month follow-up (a comparatively short time in patients with extensive illness duration) are promising but not completely compelling, with about half the group showing significant depressive symptoms. Further follow-ups using detailed qualitative interviews with patients and family could be very helpful in enriching the assessment."
Ref :http://dx.doi.org/10.1016/S2215-0366(15)00576-3

Analgesics, anti-inflammatory drugs have beneficial effect on treatment of depression

Analgesics and anti-inflammatory drugs used against muscle pain and arthritis may have a beneficial effect on depression symptoms....

Ordinary over the counter painkillers and anti-inflammatory drugs purchased from pharmacies may also be effective in the treatment of people suffering of depression.

This is shown by the largest ever meta-analysis that has just been published by a research group from Aarhus University in the American scientific journal JAMA Psychiatry. The meta-analysis is based on 14 international studies with a total 6,262 patients who either suffered from depression or had individual symptoms of depression.

Up to 15 per cent of the Danish population can expect to suffer from depression at some point in their lives. The World Health Organisation (WHO) estimates that depression is one of the top five reasons for loss of quality of life and also life years. Thus, it is a very serious condition, one where researchers all over the world are constantly trying to find more effective treatments.

In recent years research has demonstrated a correlation between depression and physical illnesses, such as painful conditions or infections in the individual patient.

"The meta-analysis supports this correlation and also demonstrates that anti-inflammatory medication in combination with antidepressants can have an effect on the treatment of depression. When combined they give an important result which, in the long term, strengthens the possibility of being able to provide the individual patient with more personalized treatment options," says MD-student Ole Köhler, who is first author of the scientific article and a member of the research group from Aarhus University.

Analgesics, anti-inflammatory drugs have beneficial effect on treatment of depression

FDA Approves Zulresso (brexanolone) for the Treatment of Postpartum Depression

U.S. Food and Drug Administration   approved Zulresso (brexanolone) injection for intravenous (IV) use for the treatment of postpartum depression (PPD) in adult women. This is the first drug approved by the FDA specifically for PPD.

"Postpartum depression is a serious condition that, when severe, can be life-threatening. Women may experience thoughts about harming themselves or harming their child. Postpartum depression can also interfere with the maternal-infant bond. This approval marks the first time a drug has been specifically approved to treat postpartum depression, providing an important new treatment option," said Tiffany Farchione, M.D., acting director of the Division of Psychiatry Products in the FDA’s Center for Drug Evaluation and Research. "Because of concerns about serious risks, including excessive sedation or sudden loss of consciousness during administration, Zulresso has been approved with a Risk Evaluation and Mitigation Strategy (REMS) and is only available to patients through a restricted distribution program at certified health care facilities where the health care provider can carefully monitor the patient."

PPD is a major depressive episode that occurs following childbirth, although symptoms can start during pregnancy. As with other forms of depression, it is characterized by sadness and/or loss of interest in activities that one used to enjoy and a decreased ability to feel pleasure (anhedonia) and may present with symptoms such as cognitive impairment, feelings of worthlessness or guilt, or suicidal ideation.

Zulresso will be available only through a restricted program called the Zulresso REMS Program that requires the drug be administered by a health care provider in a certified health care facility. The REMS requires that patients be enrolled in the program prior to administration of the drug. Zulresso is administered as a continuous IV infusion over a total of 60 hours (2.5 days). Because of the risk of serious harm due to the sudden loss of consciousness, patients must be monitored for excessive sedation and sudden loss of consciousness and have continuous pulse oximetry monitoring (monitors oxygen levels in the blood). While receiving the infusion, patients must be accompanied during interactions with their child(ren). The need for these steps is addressed in a Boxed Warning in the drug’s prescribing information. Patients will be counseled on the risks of Zulresso treatment and instructed that they must be monitored for these effects at a health care facility for the entire 60 hours of infusion. Patients should not drive, operate machinery, or do other dangerous activities until feelings of sleepiness from the treatment have completely gone away.

The efficacy of Zulresso was shown in two clinical studies in participants who received a 60-hour continuous intravenous infusion of Zulresso or placebo and were then followed for four weeks. One study included patients with severe PPD and the other included patients with moderate PPD. The primary measure in the study was the mean change from baseline in depressive symptoms as measured by a depression rating scale. In both placebo controlled studies, Zulresso demonstrated superiority to placebo in improvement of depressive symptoms at the end of the first infusion. The improvement in depression was also observed at the end of the 30-day follow-up period.

The most common adverse reactions reported by patients treated with Zulresso in clinical trials include sleepiness, dry mouth, loss of consciousness and flushing. Health care providers should consider changing the therapeutic regimen, including discontinuing Zulresso in patients whose PPD becomes worse or who experience emergent suicidal thoughts and behaviors.

FDA Approves Zulresso (brexanolone) for the Treatment of Postpartum Depression

https://en.wikipedia.org/wiki/Allopregnanolone

Arthritis drug increases effectiveness of antidepressants in bipolar patients

In continuation of my updates on celecoxib

Giving severely depressed patients the arthritis drug celecoxib (Celebrex®) dramatically boosted the effectiveness of their antidepressant medication, a Loyola study has found. 

Loyola Medicine psychiatrist Angelos Halaris, MD, PhD, presented the study at the Fifth International Congress on Psychiatry and the Neurosciences in Athens, Greece. Dr. Halaris is a professor in the Department of Psychiatry and Behavioral Neurosciences of Loyola University Chicago Stritch School of Medicine. 

 The eight-week study enrolled bipolar adults, aged 18 to 65, who were in the depressive phase of their disease and had not benefitted from an antidepressant. (Bipolar disorder is marked by alternating periods of elation and depression, with depression typically lasting longer.) Patients were randomly assigned to receive the antidepressant escitalopram (Lexapro®) plus celecoxib or Lexapro plus a placebo. 

Seventy-eight percent of the patients in the celecoxib group experienced at least a 50 percent reduction in their depression scores, with 63 percent reporting their depression had gone away completely. By comparison, only 45 percent of the placebo group recorded a 50 percent or more reduction in depression, with only 10 percent reporting their depression had lifted completely.

It typically takes four to six weeks before an antidepressant begins working. In the Loyola study, patients who took celecoxib began seeing a benefit from their antidepressant within a week.
Fifty-five patients completed the study: 31 in the Lexapro plus celecoxib group and 24 in the Lexapro plus placebo group. 

Previous studies have found that depression revs up the immune system, resulting in chronic inflammation. This inflammatory response affects the normal balance of chemical messengers in the brain called neurotransmitters. Inflammation hinders the function of antidepressants that are designed to restore normal chemical balance. By fighting inflammation, celecoxib appears to make antidepressants more effective, Dr. Halaris said. 

 Celecoxib is used to treat pain, redness, swelling and inflammation from arthritis. It also can manage acute pain and menstrual cramps. By itself, it does not treat depression.

 The study's findings support the hypothesis that inflammation plays a critical role in depression. Reducing inflammation with a drug such as celecoxib "reverses treatment resistance and enhances overall antidepressant response," Dr. Halaris wrote in the study. "Such an intervention, if implemented relatively early in the course of the disease, may arrest the neuroprogressive course of bipolar disorder." 

A single dose of magic mushroom compound reduces anxiety and depression among cancer patients

In continuation of my update on psilocybin

Magic mushrooms are wild or cultivated mushrooms containing psilocybin, which is a naturally occurring hallucinogenic and psychoactive compound. A single dose of psilocybin provides long-term relief of anxiety and depression in cancer patients, a new study found.

A team of researchers at the New York University Grossman School of Medicine has found that a one-time, single dose of psilocybin, the compound found in psychedelic mushroom or magic mushroom, combined with psychotherapy, has been linked to a marked improvement in existential and emotional distress in patients with cancer. The drug’s effect has persisted for nearly five years after administration.

The study, published in the Journal of Psychopharmacology, highlights the efficacy of psilocybin in reducing anxiety levels and depression in cancer patients. Patients with cancer who received the compound reported reductions in anxiety, depression, demoralization, hopelessness, and death anxiety nearly five years after receiving a single dose of the drug and psychotherapy.

Psilocybin effects

Psilocybin is a known hallucinogenic substance commonly found in mushrooms growing in South America, Mexico, Europe, and the United States. A schedule-I controlled substance, the compound has a high potential for abuse. However, people use it as a recreational drug, and over the past years, studies have analyzed its potential for medical purposes.

The compound has both positive and negative effects. It has been studied to relieve symptoms of anxiety and depression but has been known to trigger psychotic episodes. The drug has long been used recreationally due to its hallucinogenic effects, which work by altering a person’s perception, thoughts, and feelings.

Promising results

In the current study, the researchers conducted a long-term within-subjects follow-up analysis of self-reported symptomatology among 15 participants, who agreed to participate at an average of 3.2 to 4.5 years, following the administration of psilocybin.

The researchers noted that among the participants, about 60 to 80 percent of them had met the criteria for clinically significant anxiolytic or antidepressant responses after 4.5 years after receiving the drug. Further, 71 to 100 percent attributed positive life changes, thanks to the combination of psilocybin and psychotherapy treatment, rating it among the most spiritually significant and personally-meaningful experiences in their lifetime.

“These findings suggest that psilocybin-assisted psychotherapy holds promise in promoting long-term relief from cancer-related psychiatric distress. Limited conclusions, however, can be drawn regarding the efficacy of this therapy due to the crossover design of the parent study,” the researchers wrote on the paper.

“Nonetheless, the present study adds to the emerging literature base suggesting that psilocybin-facilitated therapy may enhance the psychological, emotional, and spiritual well-being of patients with life-threatening cancer,” they added.

The authors said psilocybin shows promise as an important tool for enhancing psychotherapy’s efficacy and eventually, providing relief for symptoms of anxiety and depression.  While the exact mechanism on how psilocybin works are not fully understood, the researchers believe the drug makes the brain more receptive to new thought patterns and ideas.

It is also believed that the compound targets a brain network, called the default mode network, which becomes activated when individuals perform mind wandering and self-reflection. These activities aid in making sense of oneself and a sense of coherent narrative identity.

In most people with anxiety and depression, the said network becomes excessively active and has been tied to feelings of worry, rigid thinking, and rumination. The compound appears to work to shift the activity in the network, allowing people to have a broader perspective of their lives and behaviors.

The team plans to further conduct additional studies with bigger trials in patients who belong to diverse ethnic and socioeconomic populations. Also, they hope to conduct more studies on patients with advanced cancer-related psychiatric and existential distress.

https://journals.sagepub.com/doi/abs/10.1177/0269881119897615?journalCode=jopa&

https://en.wikipedia.org/wiki/Psilocybin

New experimental drug may prevent stress damage in the brain

Chronic stress can make us worn-out, anxious, depressed--in fact, it can change the architecture of the brain. New research at The Rockefeller University shows that when mice experience prolonged stress, structural changes occur within a little-studied region of their amygdala, a part of the brain that regulates basic emotions, such as fear and anxiety. These changes are linked to behaviors associated with anxiety and depressive disorders

There is good news, too: an experimental new drug might prevent these changes.

"There have been hints that the amygdala displays a complex response to stress," says lead author Carla Nasca, a postdoc in Bruce S. McEwen's lab. "When we took a closer look at three regions within it, we found that neurons within one, the medial amygdala, retract as a result of chronic stress.

"While this rewiring can contribute to disorders such as anxiety and depression, our experiments with mice showed that the neurological and behavioral effects of stress can be prevented with treatment by a promising potential antidepressant that acts rapidly," Nasca says.

In the research, published May 31 in Molecular Psychiatry, her team found this protective approach increased resilience among mice most at risk for developing anxiety or depression-like behaviors.

The brain's limbic system controls emotions and memory, and it comprises a number of structures, including the amygdala, which is found deep in the brain. Scientists interested in the neurological effects of stress have focused on several structures in the limbic system, but the medial amygdala has thus far received little attention in stress studies.

To see what was going on in this area, as well as two other parts of the amygdala, Nasca and her team first subjected mice to 21 days of periodic confinement within a small space--an unpleasant experience for mice. Afterward, they tested the mice to see if their behaviors had changed--for instance, if they had begun to avoid social interaction and showed other signs of depression. They also analyzed the neurons of these mice within the three regions of the amygdala.

One area saw no change with stress. In another, the basolateral amygdala, they saw that neurons' branches became longer and more complex--a healthy sign of flexibility and adaptation, and something that had been shown up in previous work. But in the medial amygdala, they neuronal branches, which form crucial connections to other parts of the brain, appeared to shrink. The loss of connections like these can harm the brain, distorting its ability to adapt to new experiences, leaving it trapped in a state of anxiety or depression.

Protecting neurons

This effect could be prevented. The scientists repeated the stress experiment, and this time they treated mice nearing the end of their 21 days of chronic stress with acetyl carnitine, a molecule Nasca is studying for its potential as a rapid-acting antidepressant. These mice fared better than their untreated counterparts; not only were they more sociable, the neurons of their medial amygdalas also showed more branching.

Stress does not affect everyone the same way. This is true for both humans and mice--some individuals are just more vulnerable. Nasca and her colleagues' experiments included mice at high risk of developing anxiety- and depression-like behaviors in response to stress. Treatment with acetyl carnitine also appeared to protect these mice, suggesting that a similar preventative approach might work for depression-prone people.

Both humans and rodents naturally produce acetyl carnitine under normal conditions and several depression-prone animal models are deficient in acetyl carnitine. In a separate study, Nasca and colleagues are examining whether people with depression have abnormally low levels of the molecule.

"Chronic stress is linked to a number of psychiatric conditions, and this research may offer some new insights on their pathology," McEwen says. "It seems possible that the contrasting responses we see within the amygdala, and the limbic system in general, may contribute to these disorders' differing symptoms, which can range from avoiding social contact to experiencing vivid flashbacks."

FDA Approves Auvelity (dextromethorphan and bupropion) for the Treatment of Major Depressive Disorder in Adults

 

        

dextromethorphan

 

Bupropion

In continuation of my updates on dextromethorphan and Bupropion, 

Axsome Therapeutics, Inc. , a biopharmaceutical company developing and delivering novel therapies for the management of central nervous system (CNS) disorders,  announced  the U.S. Food and Drug Administration (FDA)  approval of  Auvelity (dextromethorphan HBr -bupropion HCl) extended-release tablets for the treatment of major depressive disorder (MDD) in adults.¹ Auvelity is the first and only rapid-acting oral medicine approved for the treatment of MDD with labeling of statistically significant antidepressant efficacy compared to placebo starting at one week.  The rapid antidepressant effects of Auvelity were sustained at all subsequent timepoints. Auvelity is the first and only oral N-methyl D-aspartate (NMDA) receptor antagonist approved for the treatment of MDD.  Axsome anticipates Auvelity to be commercially available in the U.S. in the fourth quarter of 2022.

Maurizio Fava, MD, Psychiatrist-In-Chief, Department of Psychiatry, Massachusetts General Hospital, Executive Director, Clinical Trials Network & Institute, Associate Dean for Clinical & Translational Research, and Slater Family Professor of Psychiatry, Harvard Medical School said, “The approval of Auvelity represents a milestone in depression treatment based on its novel oral NMDA antagonist mechanism, its rapid antidepressant efficacy demonstrated in controlled trials, and a relatively favorable safety profile. Auvelity, which was granted Breakthrough Therapy designation by the FDA, represents the first new oral non-monoamine-based mechanism of action approved to treat major depressive disorder in over sixty years. Nearly two thirds of patients treated with currently available antidepressants do not adequately respond, and those that do may not achieve clinically meaningful responses for up to six to eight weeks. Given the debilitating nature of depression, the efficacy of Auvelity observed at one week and sustained thereafter may have a significant impact on the current treatment paradigm for this condition.”

Michael Pollock, Chief Executive Officer of the Depression and Bipolar Support Alliance (DBSA), a leading national patient advocacy organization focusing on depression and bipolar disorder said, “The mental health crisis in the United States is one of the most pressing health issues facing our country today. Over 20 million American adults experienced major depressive disorder each year prior to the COVID-19 pandemic. These numbers increased dramatically during the pandemic with approximately thirty percent of adults in the U.S. or more than 80 million Americans experiencing elevated symptoms of depression. The need for new treatment options, particularly those with new mechanisms of action, could not be clearer and more urgent for those living with, or impacted by, major depressive disorder.”

Dan V. Iosifescu, MD, Professor of Psychiatry at the New York University School of Medicine, and Director of the Clinical Research Division at the Nathan Kline Institute for Psychiatric Research said, “Major depressive disorder is disabling and potentially life-threatening, causes profound distress for patients and their families, and leads to substantial healthcare resource utilization. Auvelity’s oral NMDA receptor antagonist and sigma-1 receptor agonist activity, which targets glutamatergic neurotransmission, provides clinicians a long sought after new mechanistic approach which may benefit the millions of patients living with this serious condition. In clinical trials, Auvelity has demonstrated rapid and statistically significant improvement in depressive symptoms as early as Week 1, and increased rates of remission at Week 2 compared with placebo. This early benefit with Auvelity was maintained and increased with continued treatment, and was accompanied by a favorable safety and tolerability profile.”

Auvelity was studied in a comprehensive clinical program which included more than 1,100 patients with depression. The efficacy of Auvelity in the treatment of MDD was demonstrated in the GEMINI placebo-controlled study, and confirmatory evidence which included the ASCEND study comparing Auvelity to bupropion sustained-release tablets. In the GEMENI study, Auvelity was statistically significantly superior to placebo in improvement of depressive symptoms as measured by the change in the Montgomery-Åsberg Depression Rating Scale (MADRS) total score at Week 6, the study’s primary endpoint. To evaluate speed of onset of action, the change in MADRS total score from baseline to Week 1 and from baseline to Week 2 were pre-specified secondary efficacy endpoints. The difference between Auvelity and placebo in change from baseline in MADRS total score was statistically significant at Week 1 and at Week 2.¹ In the ASCEND study, Auvelity was statistically significantly superior to bupropion sustained-release tablets 105 mg twice daily on the primary outcome measure.⁵ The primary outcome measure of the ASCEND study was calculated by assessing the change from baseline in MADRS total scores from Week 1 to Week 6 and then taking the average of those scores.¹ In the placebo-controlled clinical study, the most common (incidence ≥5% for Auvelity and more than twice as frequently as placebo) adverse reactions were dizziness, headache, diarrhea, somnolence, dry mouth, sexual dysfunction, and hyperhidrosis.¹

The FDA granted Breakthrough Therapy designation for Auvelity for the treatment of MDD in March 2019. This designation is granted to candidate drugs that show potential for benefit above that of available therapies based on preliminary clinical data, and it provides the sponsor with added focus from and greater interactions with FDA staff during the development of the candidate drug.⁶ The Auvelity New Drug Application (NDA) was evaluated by the FDA under Priority Review, which is granted by the FDA to applications for medicines that, if approved, would provide significant improvements in the effectiveness or safety of the treatment, diagnosis, or prevention of serious conditions when compared to standard applications.

 

https://en.wikipedia.org/wiki/Bupropion

https://en.wikipedia.org/wiki/Dextromethorphan

 

Ketamine’s role in treatment of depression: Study

In continuation of my update on Ketamine

The anaesthetic drug Ketamine has been shown to be beneficial in some cases of depression and suicidal ideation which have typically failed to respond to other standard antidepressant medications. A new study has explored the actual workings of ketamine in depression and found that the drug can act on the same receptors as opioid pain relievers.

The latest study was published in the American Journal of Psychiatry.

For this the researchers from the Stanford’s Neurosciences Institute included 12 volunteers at first. These cases were all of treatment-resistant depression.

The participants were all given infusion of Ketamine. In addition some were administered naltrexone and others normal saline infusion. Naltrexone is a drug that can block the effects of opioids.

Results showed that those on ketamine and saline combination found relief from their depressive symptoms quickly compared to those on ketamine and naltrexone combination. In fact those on ketamine and saline placebo reported at least a 90 percent reduction in their symptoms within the first three days of the infusion.

No such improvement was seen among those on ketamine and naltrexone. This proved that when the opioid actions are blocked, the ketamine cannot function as an antidepressant. Both groups faced certain side effects of ketamine such as an “out-of-the-body” experience, dysphoric feelings, tripping etc. This also showed that the antidepressant action of Ketamine was separate from its usual actions, which were seen in all participants in either group.

The initial trial plan was to include 30 patients. Due to the dramatic improvement seen in one group and no changes in the other, the team decided to stop the trial prematurely. This was to spare patients useless treatment.

Ketamine has been in news recently due to its unexplored potential as an antidepressant. If proven, researchers believe, this could impact depression research significantly. Ketamine has gathered interest mainly because it does not change the brain chemistry unlike other antidepressants. Co-author Boris Heifets, a clinical assistant professor of anesthesiology, perioperative and pain medicine at Stanford explained that ketamine blocks the brain’s receptors for glutamate. Glutamate is an important neurotransmitter in the brain. Many researchers have thought that glutamate could be the key zone where ketamine acts as an antidepressant. Heifets added that ketamine is not a simple drug and has varied targets which could be responsible for its antidepressant activities. A lot of money has been spent on developing agents that could work on the glutamate receptors and try to mimic ketamine’s antidepressant actions.

This study shows that the approach is incorrect and glutamates are not the target lead author Nolan Williams explained. Co-senior study author Dr. Alan Schatzberg, a professor of psychiatry and behavioral sciences at Stanford explained that the ketamine was not working as “everyone thought it was working.”

Heifets noted that ketamine is a drug of abuse (called “Special K” in party circuits) that has been in use for a long time and there is an abuse potential of this drug acting on the opioid receptors to provide such effects. He warned that this abuse potential should be kept in mind before ketamine comes into the market as an antidepressant.

However the whole team agrees that this new study shows how ketamine can help patients who have intractable depression. New drugs could be developed in the same lines they explain. These drugs could possibly activate the opioid receptors without having abuse potential they add. Williams added that ketamine has been seen to provide relief of symptoms in other mental ailments such as obsessive compulsive disorders and now is the time to explore if opioids play a role in these diseases as well.

Mark George, a professor of psychiatry, radiology and neuroscience at the Medical University of South Carolina in an editorial accompanying the article wrote that this study is a small one and so should be confirmed in larger trials before conclusions could be drawn.

Ref : https://ajp.psychiatryonline.org/doi/10.1176/appi.ajp.2018.18020138

https://en.wikipedia.org/wiki/Ketamine

FDA Advisory Committee Recommends Approval of Spravato (esketamine) Nasal Spray for Adults with Treatment-Resistant Depression

  

 The Janssen Pharmaceutical Companies of Johnson & Johnson  announced that the U.S. Food and Drug Administration (FDA) Psychopharmacologic Drug Advisory Committee and Drug Safety and Risk Management Advisory Committee jointly voted (14 yes, 2 no, 1 abstain) that data support the favorable benefit-risk profile of Spravato (esketamine) nasal spray CIII for adults living with treatment-resistant depression. Spravato is an investigational prescription treatment that is thought to work differently than currently approved therapies for major depressive disorder (MDD). Janssen announced on September 4, 2018 that it submitted a New Drug Application (NDA) to the FDA for the approval of Spravato.1 If approved, Spravato would provide the first new mechanism of action in 30 years to treat this debilitating mental illness.2,3

“We are pleased with the advisory committees’ vote and their recommendation to approve Spravato as a potential therapy for adults living with treatment-resistant depression,” said Husseini K. Manji, M.D., Global Head, Neuroscience Therapeutic Area, Janssen Research & Development, LLC. “Our comprehensive research program for esketamine nasal spray supports a positive benefit-risk profile for adults with treatment-resistant depression.”

The committees based their support on the safety and efficacy data from five Phase 3 studies in patients with treatment-resistant depression: three short-term studies; one maintenance of effect study; and one long-term safety study. In addition, the Spravato research program provided supportive data from three Phase 2 studies and 19 Phase 1 studies in patients with treatment-resistant depression and healthy volunteers. Data from both a short-term Phase 3 study and a long-term Phase 3 study demonstrated that esketamine nasal spray plus a newly initiated oral antidepressant provided statistically significant, clinically meaningful, rapid, and sustained improvement of depressive symptoms in this difficult-to-treat population.4,5 All the patients who participated in the Phase 3 studies received esketamine or placebo in addition to a newly initiated oral antidepressant at the start of the treatment phase.

The long-term safety study showed that esketamine was generally tolerable, with no new safety signals with dosing up to 52 weeks compared to data from short-term (4-week) studies.6 Discontinuation rates due to esketamine-related adverse events were low and occurred typically in the first weeks. Most treatment-emergent adverse events, including dissociative symptoms, dizziness/vertigo, increased blood pressure, and sedation, occurred shortly after dosing while patients were under the supervision of a health care professional, were transient, and resolved the same day. In addition to the comprehensive clinical research program, the company proposed a robust Risk Evaluation and Mitigation Strategy (REMS).

https://en.wikipedia.org/wiki/Esketamine

 --------------------------------------------------------------------------------------

FDA Advisory Committee Recommends Approval of Spravato (esketamine) Nasal Spray for Adults with Treatment-Resistant Depression

FDA Approves Expanded Use of Vraylar (cariprazine) in the Treatment of Bipolar Depression

In continuation of my update on Cariprazine

Allergan plc (NYSE: AGN) and Gedeon Richter Plc.   announced that the U.S. Food and Drug Administration (FDA) has approved a supplemental New Drug Application (sNDA) for Vraylar (cariprazine) for expanded use to treat depressive episodes associated with bipolar I disorder (bipolar depression) in adults. Vraylar is also approved in the U.S. to treat manic or mixed episodes associated with bipolar I disorder in adults. There are nearly 11 million adults in the U.S. living with bipolar disorder, a condition that causes extreme shifts in mood, energy, and activity levels.

"Treating bipolar disorder can be very difficult because people living with the illness experience a range of depressive and manic symptoms, sometimes both at the same time, and this FDA approval gives healthcare providers a new option to treat the full spectrum of bipolar I disorder symptoms, specifically manic, mixed, and depressive episodes, with just one medication," said Dr. Stephen Stahl, Professor of Psychiatry at the University of California San Diego and lead author of the post hoc analysis, Cariprazine Efficacy in Patients with Bipolar Depression and Concurrent Manic Symptoms. "Treating depression, mania and mixed episodes with a single medication is important for people living with, and healthcare providers treating, this complex illness. This approval can streamline a treatment decision while helping to stabilize the disorder."

Seventy percent of people living with bipolar disorder receive at least one misdiagnosis and consult an average of four doctors over approximately 10 years before being accurately diagnosed.3 Many patients take multiple medications to treat the symptoms of this condition.

The FDA approval for the expanded indication of Vraylar is based on three pivotal trials, including RGH-MD-53, RGH-MD-54 and RGH-MD-56, in which cariprazine demonstrated greater improvement than placebo for the change from baseline to week six on the Montgomery Asberg Depression Rating scale (MADRS) total score. In all three studies, the Vraylar 1.5 mg dose demonstrated statistical significance over placebo; additionally, in RGH-MD-54, the Vraylar 3 mg dose demonstrated statistical significance over placebo. Common adverse events reported in the pivotal trials were nausea, akathisia, restlessness, and extrapyramidal symptoms.

"This approval represents an important milestone in our efforts to help patients and prescribing healthcare providers effectively manage bipolar I disorder and demonstrates our ongoing focus on mental health," said David Nicholson, Chief Research & Development Officer at Allergan.  "We are committed to developing therapies for complex mental health disorders, including Vraylar, which is currently in Phase 3 clinical trials for the treatment of major depressive disorder."

"This approval is considered a notable achievement in the development process of cariprazine, our flagship product," said Dr. István Greiner, Research Director of Gedeon Richter Plc. "We are pleased that more and more patient groups suffering from psychiatric disorders will get access to cariprazine as a treatment option."

About Vraylar (cariprazine)

Vraylar is an oral, once daily atypical antipsychotic approved for the acute treatment of adults with manic or mixed episodes associated with bipolar I disorder (3 to 6 mg/day) and for the treatment of depressive episodes associated with bipolar I disorder (bipolar depression) in adults (1.5 or 3 mg/day). Vraylar is also approved for the treatment of schizophrenia in adults (1.5 to 6 mg/day).

While the mechanism of action of Vraylar is unknown, the efficacy of Vraylar could be mediated through a combination of partial agonist activity at central dopamine D₂ and serotonin 5-HT1A receptors and antagonist activity at serotonin 5-HT2A receptors. Pharmacodynamic studies with cariprazine have shown that it acts as a partial agonist with high binding affinity at dopamine D3, dopamine D2, and serotonin 5-HT1A receptors. Cariprazine demonstrated up to ~8-fold greater in vitro affinity for dopamine D3 vs D2 receptors. Cariprazine also acts as an antagonist at serotonin 5-HT2B and 5-HT2A receptors with high and moderate binding affinity, respectively as well as it binds to the histamine H1 receptors.

Vraylar shows lower binding affinity to the serotonin 5-HT2C and α1A- adrenergic receptors and has no appreciable affinity for cholinergic muscarinic receptors. The clinical significance of these in vitro data is unknown.

Vraylar was discovered and co-developed by Gedeon Richter Plc and is licensed by Allergan, in the U.S. and Canada. For more than a decade both companies have conducted over 20 clinical trials enrolling thousands of patients worldwide to evaluate the efficacy and safety of cariprazine for people living with a broad range of mental health illnesses.

https://en.wikipedia.org/wiki/Cariprazine

FDA Approves Expanded Use of Vraylar (cariprazine) in the Treatment of Bipolar Depression

In continuation of my update on VRAYLAR (cariprazine)

Allergan plc (NYSE: AGN) and Gedeon Richter Plc.   announced that the U.S. Food and Drug Administration (FDA) has approved a supplemental New Drug Application (sNDA) for Vraylar (cariprazine) for expanded use to treat depressive episodes associated with bipolar I disorder (bipolar depression) in adults. Vraylar is also approved in the U.S. to treat manic or mixed episodes associated with bipolar I disorder in adults. There are nearly 11 million adults in the U.S. living with bipolar disorder, a condition that causes extreme shifts in mood, energy, and activity levels.

"Treating bipolar disorder can be very difficult because people living with the illness experience a range of depressive and manic symptoms, sometimes both at the same time, and this FDA approval gives healthcare providers a new option to treat the full spectrum of bipolar I disorder symptoms, specifically manic, mixed, and depressive episodes, with just one medication," said Dr. Stephen Stahl, Professor of Psychiatry at the University of California San Diego and lead author of the post hoc analysis, Cariprazine Efficacy in Patients with Bipolar Depression and Concurrent Manic Symptoms. "Treating depression, mania and mixed episodes with a single medication is important for people living with, and healthcare providers treating, this complex illness. This approval can streamline a treatment decision while helping to stabilize the disorder."

Seventy percent of people living with bipolar disorder receive at least one misdiagnosis and consult an average of four doctors over approximately 10 years before being accurately diagnosed.3 Many patients take multiple medications to treat the symptoms of this condition.

The FDA approval for the expanded indication of Vraylar is based on three pivotal trials, including RGH-MD-53, RGH-MD-54 and RGH-MD-56, in which cariprazine demonstrated greater improvement than placebo for the change from baseline to week six on the Montgomery Asberg Depression Rating scale (MADRS) total score. In all three studies, the Vraylar 1.5 mg dose demonstrated statistical significance over placebo; additionally, in RGH-MD-54, the Vraylar 3 mg dose demonstrated statistical significance over placebo. Common adverse events reported in the pivotal trials were nausea, akathisia, restlessness, and extrapyramidal symptoms.

"This approval represents an important milestone in our efforts to help patients and prescribing healthcare providers effectively manage bipolar I disorder and demonstrates our ongoing focus on mental health," said David Nicholson, Chief Research & Development Officer at Allergan.  "We are committed to developing therapies for complex mental health disorders, including Vraylar, which is currently in Phase 3 clinical trials for the treatment of major depressive disorder."

"This approval is considered a notable achievement in the development process of cariprazine, our flagship product," said Dr. István Greiner, Research Director of Gedeon Richter Plc. "We are pleased that more and more patient groups suffering from psychiatric disorders will get access to cariprazine as a treatment option."

About Vraylar (cariprazine)

Vraylar is an oral, once daily atypical antipsychotic approved for the acute treatment of adults with manic or mixed episodes associated with bipolar I disorder (3 to 6 mg/day) and for the treatment of depressive episodes associated with bipolar I disorder (bipolar depression) in adults (1.5 or 3 mg/day). Vraylar is also approved for the treatment of schizophrenia in adults (1.5 to 6 mg/day).

While the mechanism of action of Vraylar is unknown, the efficacy of Vraylar could be mediated through a combination of partial agonist activity at central dopamine D₂ and serotonin 5-HT1A receptors and antagonist activity at serotonin 5-HT2A receptors. Pharmacodynamic studies with cariprazine have shown that it acts as a partial agonist with high binding affinity at dopamine D3, dopamine D2, and serotonin 5-HT1A receptors. Cariprazine demonstrated up to ~8-fold greater in vitro affinity for dopamine D3 vs D2 receptors. Cariprazine also acts as an antagonist at serotonin 5-HT2B and 5-HT2A receptors with high and moderate binding affinity, respectively as well as it binds to the histamine H1 receptors.

Vraylar shows lower binding affinity to the serotonin 5-HT2C and α1A- adrenergic receptors and has no appreciable affinity for cholinergic muscarinic receptors. The clinical significance of these in vitro data is unknown.

Vraylar was discovered and co-developed by Gedeon Richter Plc and is licensed by Allergan, in the U.S. and Canada. For more than a decade both companies have conducted over 20 clinical trials enrolling thousands of patients worldwide to evaluate the efficacy and safety of cariprazine for people living with a broad range of mental health illnesses.

https://en.wikipedia.org/wiki/Cariprazine

FDA Approves Spravato (esketamine) Nasal Spray for Treatment-Resistant Depression

  In continuation of my update on esketamine

The U.S. Food and Drug Administration   approved Spravato (esketamine) nasal spray, in conjunction with an oral antidepressant, for the treatment of depression in adults who have tried other antidepressant medicines but have not benefited from them (treatment-resistant depression). Because of the risk of serious adverse outcomes resulting from sedation and dissociation caused by Spravato administration, and the potential for abuse and misuse of the drug, it is only available through a restricted distribution system, under a Risk Evaluation and Mitigation Strategy (REMS).

"There has been a long-standing need for additional effective treatments for treatment-resistant depression, a serious and life-threatening condition," said Tiffany Farchione, M.D., acting director of the Division of Psychiatry Products in the FDA's Center for Drug Evaluation and Research. "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 to our decision to approve this treatment. Because of safey concerns, the drug will only be available through a restricted distribution system and it must be administered in a certified medical office where the health care provider can monitor the patient."

Patients with major depressive disorder who, despite trying at least two antidepressant treatments given at adequate doses for an adequate duration in the current episode, have not responded to treatment are considered to have treatment-resistant depression.

The Spravato labeling contains a Boxed Warning that cautions that patients are at risk for sedation and difficulty with attention, judgment and thinking (dissociation), abuse and misuse, and suicidal thoughts and behaviors after administration of the drug. Because of the risk of sedation and dissociation, patients must be monitored by a health care provider for at least two hours after receiving their Spravato dose. The REMS requires the prescriber and the patient to both sign a Patient Enrollment Form that clearly states that the patient understands they should make arrangements to safely leave the health care setting to get home and that the patient should not drive or use heavy machinery for the rest of the day on which they receved the drug. Additionally, Spravato must be dispensed with a patient Medication Guide that outlines the drug’s uses and risks.

The patient self-administers Spravato nasal spray under the supervision of a health care provider in a certified doctor’s office or clinic, and the spray cannot be taken home. The health care provider will instruct the patient on how to operate the nasal spray device. During and after each use of the nasal spray device, the health care provider will check the patient and determine when the patient is ready to leave.

The efficacy of Spravato was evaluated in three short-term (four-week) clinical trials and one longer-term maintenance-of-effect trial. In the three short-term studies, patients were randomized to receive Spravato or a placebo nasal spray. In light of the serious nature of treatment-resistant depresison and the need for patients to receive some form of treatment, all patients in these studies started a new oral antidepressant at the time of randomization and the new antidepressant was continued throughout the trials. The primary efficacy measure was the change from baseline on a scale used to assess the severity of depressive symptoms. In one of the short-term studies, Spravato nasal spray demonstrated statistically significant effect compared to placebo on the severity of depression, and some effect was seen within two days. The two other short-term trials did not meet the pre-specified statistical tests for demonstrating effectiveness. In the longer-term maintenance-of-effect trial, patients in stable remission or with stable response who continued treatment with Spravato plus an oral antidepressant experienced a statistically significantly longer time to relapse of depressive symptoms than patients on placebo nasal spray plus an oral antidepressant.

The most common side effects experienced by patients treated with Spravato in the clinical trials were disassociation, dizziness, nausea, sedation, vertigo, decreased feeling or sensitivity (hypoesthesia), anxiety, lethargy, increased blood pressure, vomiting and feeling drunk.

Patients with unstable or poorly controlled hypertension or pre-existing aneurysmal vascular disorders may be at increased risk for adverse cardiovascular or cerebrovascular effects. Spravato may impair attention, judgment, thinking, reaction speed and motor skills. Patients should not drive or operate machinery until the next day after a restful sleep. Spravato may cause fetal harm and women of reproductive potential should consider pregnancy planning and prevention; women should not breastfeed while being treated.

Esketamine is the s-enantiomer of ketamine. Ketamine is a mixture of two enantiomers (mirror image molecules). This is the first FDA approval of esketamine for any use. The FDA approved ketamine (Ketalar) in 1970.

Ref  https://en.wikipedia.org/wiki/Esketamine

FDA Approves Spravato (esketamine) Nasal Spray for Treatment-Resistant Depression