Kenneth Shinozuka

University of Oxford | OX · Department of Psychiatry

Ketamine has emerged as a novel treatment for psychiatric disorders, particularly treatment-resistant depression (TRD). Although intravenous (IV) ketamine is not FDA-approved for TRD, esketamine, an FDA-approved therapeutic, has contributed to the widespread clinical use of off-label IV ketamine across the United States. This phenomenon highlights...

Lysergic acid diethylamide (LSD) is a classic serotonergic psychedelic that induces a profoundly altered conscious state. In conjunction with psychological support, it is currently being explored as a treatment for generalized anxiety disorder and depression. The dorsolateral prefrontal cortex (DLPFC) is a brain region that is known to be involved...

Psychedelics are serotonergic drugs that profoundly alter consciousness, yet their neural mechanisms are not fully understood. A popular theory, RElaxed Beliefs Under pSychedelics (REBUS), posits that psychedelics flatten the hierarchy of information flow in the brain. Here, we investigate hierarchy based on the imbalance between sending and receiv...

Serotonergic psychedelics induce altered states of consciousness and have shown potential for treating a variety of neuropsychiatric disorders, including depression and addiction. Yet their modes of action are not fully understood. Here, we provide a novel, synergistic understanding of psychedelics arising from systematic reviews and meta-analyses...

Psychedelics are hallucinogenic drugs that have the potential to treat depression, post-traumatic stress disorder, and other psychiatric conditions. The dominant paradigm in contemporary psychedelic-assisted therapy is non-directive; that is, participants undergo the psychedelic treatment with minimal external guidance from therapists. However, the...

Psychedelics are serotonergic drugs that profoundly alter consciousness, yet their neural mechanisms are not fully understood. A popular theory, RElaxed Beliefs Under pSychedelics (REBUS), posits that psychedelics flatten the hierarchy of information flow in the brain. Here, we investigate hierarchy based on the imbalance between sending and receiv...

Awareness of the visual periphery is a crucial aspect of perception. However, few studies assess the ability to detect peripheral stimuli while competing stimuli of the same type are simultaneously displayed in the center of the visual field. In this study, participants were asked to judge the dominant orientation in a display that contained lines...

Background N,N -dimethyltryptamine (DMT) is a naturally occurring serotonergic psychedelic found in natural plants around the globe. As the main psychoactive component in ayahuasca, which also contains monoamine oxidase inhibitors, DMT has been consumed as plant-based brew by indigenous peoples for centuries. Further research is required to delinea...

Background Psychedelic drugs have recently emerged as plausibly effective pharmacological agents for the management of depression, anxiety, and other neuropsychiatric conditions, including those that are treatment-resistent. The latter half of the 20th century marked a revolution in the treatment of mental illnesses, exemplified by the introduction...

The reviews in this special edition have presented a primer on the state of the literature for 7 different psychedelic compounds and their plausible roles in medicine. In a common format underscoring strengths, weakness, opportunities, and threats (SWOT), this article addresses how psychedelic compounds fit into the broader health care landscape fo...

Background Lysergic acid diethylamide (LSD) is a hallucinogenic agent. In the mid-20 th century, it was used to augment psychoanalysis and to treat alcohol use disorder. However, LSD was banned in 1970 in part because of concerns that it could bring about or exacerbate mental illness. Its therapeutic potential remains incompletely understood. Area...

Background Ibogaine is a plant-derived alkaloid that has been used for thousands of years in rites of passage and spiritual ceremonies in West-Central Africa. In the West, it has primarily been used and studied for its anti-addictive properties and more recently for other neuropsychiatric indications, including post-traumatic stress disorder, depre...

Background After becoming notorious for its use as a party drug in the 1980s, 3,4-methylenedioxy-methampetamine (MDMA), also known by its street names “molly” and “ecstasy,” has emerged as a powerful treatment for post-traumatic stress disorder (PTSD). Areas of Uncertainty There are extensive data about the risk profile of MDMA. However, the liter...

Background The primary psychoactive drug in magic mushrooms, psilocybin, induces profound alterations in consciousness through the 5-HT 2A receptor. This review consolidates current research findings to elucidate the pharmacology, safety profile, and clinical applications of psilocybin. Areas of Uncertainty Despite initial concerns that psilocybin...

Background Ketamine, an arylcyclohexylamine dissociative anesthetic agent, has evolved into a versatile therapeutic. It has a rapid-onset, well-understood cardiovascular effects and a favorable safety profile in clinical use. Its enantiomeric compound, esketamine, was approved by the Food and Drug Administration in 2019 for both treatment-resistant...

The reviews in this special edition have presented a primer on the state of the literature for six different psychedelic compounds and their plausible role in medicine. In a common format underscoring strengths, weakness, opportunities, and threats (SWOT), this article addresses how psychedelic compounds fit into the broader healthcare landscape fo...

Background: Ketamine, an arylcyclohexylamine dissociative anesthetic agent, has evolved into a versatile therapeutic. It has a rapid onset, well-understood cardiovascular effects, and a favorable safety profile in clinical use. Its enantiomeric compound, esketamine, was approved by the FDA in 2019 for both treatment-resistant depression as well as...

Background: Ibogaine is a plant-derived alkaloid that has been used for thousands of years in rites of passage and spiritual ceremonies in West-Central Africa. In the West, it has primarily been used and studied for its anti-addictive properties and more recently for other neuropsychiatric indications, including post-traumatic stress disorder (PTSD...

Background: The primary psychoactive drug in magic mushrooms, psilocybin induces profound alterations in consciousness through its action at the 5-HT2A receptor. This comprehensive review consolidates current research findings to elucidate the pharmacology, safety profile, and clinical applications of psilocybin.Areas of Uncertainty: Despite initia...

Background: Lysergic acid diethylamide (LSD) is a hallucinogenic agent. In the mid-20th century, it was used to augment psychoanalysis and to treat alcohol use disorder. However, LSD was banned in 1970 in part due to concerns that it could bring about or exacerbate mental illness. Its therapeutic potential remains incompletely understood.Areas of U...

Background: Psychedelic drugs have recently emerged as plausibly effective pharmacological agents for the management of depression, anxiety, and other neuropsychiatric conditions, including conditions that have not benefited from prior interventions. The latter half of the twentieth century marked a revolution in the treatment of depression, anxiet...

Background: N,N-dimethyltryptamine (DMT) is a naturally-occurring serotonergic psychedelic found in natural plants around the globe. As the main psychoactive component in ayahuasca, which also contains monoamine oxidase (MAO) inhibitors, DMT has been consumed as plant-based brew by indigenous peoples for centuries. Further research is required to d...

Background: After becoming notorious for its use as a party drug in the 1980s, 3,4-methylenedioxy-methampetamine (MDMA), also known by its street names “molly” and “ecstasy,” has emerged as a powerful treatment for post-traumatic stress disorder (PTSD). Areas of uncertainty: There is extensive data about the risk profile of MDMA. However, the liter...

Serotonergic psychedelics induce altered states of consciousness and have shown potential in treating a variety of neuropsychiatric disorders, including depression and addiction. Yet their modes of action are currently not fully understood. Here, we provide three systematic reviews and meta-analyses of three hierarchical levels relevant to the effe...

Alzheimer's disease (AD) is a devastating neurodegenerative disease with no cure currently available. A pathological hallmark of AD is accumulation and deposition of amyloid-β protein (Aβ), a ∼4 kDa peptide generated through serial cleavage of the amyloid-β protein precursor (AβPP) by β- and γ-secretases. Curcumin is a natural compound primarily fo...

This paper presents an innovative pressure sensor system embedded in a sock, which has a number of health care applications. One of these is the low-cost, reliable detection of the bed-departure of Alzheimer's patients, an increasingly common problem that causes significant stress to caregivers. The system comprises a pressure sensor embedded in a...