Research Topic: ketamine

New perspective on sustained antidepressant effect: focus on neurexins regulating synaptic plasticity

This review explores how hallucinogens like ketamine and psilocybin produce long-lasting antidepressant effects by changing how brain cells communicate. The key mechanism involves special molecules called neurexins that sit at the connections between neurons and control whether those connections strengthen or weaken. By understanding and potentially targeting neurexins, scientists hope to develop new depression treatments that work longer and more effectively than current medications.

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The Role of Psychedelics in the Treatment of Substance Use Disorders: An Overview of Systematic Reviews

This research review examines how psychedelic drugs like psilocybin and ketamine might help treat addiction. Studies show these substances could help people quit alcohol, drugs, and smoking by reducing cravings and promoting long-term abstinence. While results are promising, scientists caution that more rigorous research is needed before these treatments can be recommended for regular medical use, and they acknowledge real risks associated with these powerful drugs.

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Novel psychedelic interventions for post-traumatic stress disorder and their promise for precision medicine

This review examines how psychedelic drugs like ketamine, MDMA, and psilocybin could offer new hope for people with PTSD by working on the brain differently than current medications. These compounds work quickly and help the brain form new neural connections that can help people process traumatic memories more effectively. When combined with therapy, these drugs show promise in reducing PTSD symptoms faster and more effectively than traditional antidepressants. The review also explains how doctors could use personalized medicine approaches using brain scans and genetic testing to determine which treatment would work best for each individual patient.

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Psychotomimetic compensation versus sensitization

This paper proposes a new way to understand why drugs that can cause psychosis-like effects (such as psilocybin, LSD, and ketamine) can also help treat depression and anxiety. The authors suggest that these drugs trigger compensatory responses in the brain that temporarily help us cope with stress, similar to how a runner’s high feels good during exercise. However, if someone uses these drugs repeatedly or experiences chronic stress, they may become sensitized and more vulnerable to developing actual psychotic symptoms over time.

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Meta-correlation of the effect of ketamine and psilocybin induced subjective effects on therapeutic outcome

This study examined whether the psychological experiences people have while taking ketamine or psilocybin—such as feeling disconnected or having spiritual insights—are actually responsible for their mental health improvements. Researchers analyzed 23 studies and found that these subjective experiences explain about 10% of ketamine’s benefits and 24% of psilocybin’s benefits. Psilocybin’s effects appear more connected to therapeutic outcomes than ketamine’s, and both drugs showed stronger connections between subjective effects and treatment success in substance use disorder compared to depression.

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Molecular Mechanisms of Emerging Antidepressant Strategies: From Ketamine to Neuromodulation

Depression is a serious mental health condition affecting over 300 million people worldwide, with many patients not responding well to standard antidepressants. This review examines both traditional antidepressants like SSRIs and exciting new treatments including ketamine and psilocybin, as well as brain stimulation techniques. The key finding is that different treatments work through similar mechanisms—all ultimately enhancing brain cell connections and reducing inflammation—suggesting that combining different approaches might work better than single therapies.

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Changes in synaptic markers after administration of ketamine or psychedelics: a systematic scoping review

This review examines how ketamine and psychedelics affect connections between brain cells. Under stressful conditions, ketamine and psychedelics appear to strengthen these connections in brain areas important for mood and learning. However, the effects are mixed under normal conditions and vary based on dose, sex, and which specific markers are measured. The findings suggest these substances may help restore brain function damaged by stress or substance use.

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A Review of the Food and Drug Administration Pipeline and Proposed California Legislation on Medicinal Psychedelics

Psychedelic compounds like psilocybin and ketamine show promise in treating serious mental health conditions including PTSD and depression. The FDA carefully evaluates these drugs through multi-phase clinical trials to ensure they are safe and effective. While California has proposed making psychedelics more widely available through legislation, the FDA’s thorough approval process provides important protections by identifying potential risks and ensuring proper medical oversight.

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A clinical protocol for group-based ketamine-assisted therapy in a community of practice: the Roots To Thrive model

The Roots to Thrive ketamine-assisted therapy program is a 12-week group treatment that combines ketamine sessions with weekly group meetings, somatic practices, and emotional support. The program integrates both Western clinical approaches and Indigenous wisdom, treating depression, anxiety, and PTSD in groups of 20-40 participants. Over 750 people have participated with significant improvements in mental health symptoms and life functioning, demonstrating that this group-based approach is both safe and effective.

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Treating job-related stress with psychedelic group therapy: a case series on group ketamine-assisted psychotherapy for healthcare workers and first responders

Researchers tested a new group therapy approach using ketamine to help firefighters, police officers, paramedics, and healthcare workers dealing with job stress and burnout. Over seven weeks, 32 participants received three ketamine sessions combined with group therapy. The results showed significant improvements in anxiety, depression, trauma symptoms, and burnout within the group. This low-cost group approach not only helped individual symptoms but also created a supportive community where workers felt understood by others in similar situations.

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