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Ketamine: all studies

Page 335 of 448: studies 3,341 to 3,350 of 4,475, newest first. Back to the ketamine overview

Research

Psychedelics: A review of their effects on recalled aversive memories and fear/anxiety expression in rodents

Neuroscience & Biobehavioral Reviews September 20, 2024 Isabel Werle, Leandro J Bertoglio 17 citations

Threatening events and stressful experiences can lead to maladaptive memories and related behaviors. Existing treatments often fail to address these issues linked to anxiety/stress-related disorders effectively. This review identifies dose ranges associated with specific actions across various psychedelics. We examined psilocybin/psilocin, lysergic acid diethylamide (LSD),...

Mind over matter: the microbial mindscapes of psychedelics and the gut-brain axis.

Pharmacological Research September 1, 2024 Giorgia Caspani, Simon Ruffell, WaiFung Tsang et al. 13 citations

Psychedelics have emerged as promising therapeutics for several psychiatric disorders. Hypotheses around their mechanisms have revolved around their partial agonism at the serotonin 2 A receptor, leading to enhanced neuroplasticity and brain connectivity changes that underlie positive mindset shifts. However, these accounts fail to recognise that the gut microbiota, acting via the gut-brain...

[Psychedelic and dissociative agents in psychiatry: challenges in the treatment].

Der Nervenarzt September 1, 2024 Johannes Jungwirth, Francesco Bavato, Boris B. Quednow 6 citations

With the discovery of the antidepressive effects of ketamine and the increasing withdrawal of the pharmaceutical industry from the development of new psychotropic drugs, the psychiatric research into the clinical application of hallucinogens in psychiatry has literally blossomed in the last two decades. Promising results for various treatment approaches with psychedelic agents, such lysergic...

DOI: 10.1007/s00115-024-01727-0 (opens in new tab) Full text (opens in new tab) Psychedelic therapy Mental health treatment Clinical safety Addictive potential +5

Effects of N-Methyl-d-Aspartate Receptor Antagonists on Gamma-Band Activity During Auditory Stimulation Compared With Electro/Magneto-encephalographic Data in Schizophrenia and Early-Stage Psychosis: A Systematic Review and Perspective.

Schizophrenia Bulletin August 27, 2024 Bianca Bianciardi, Helena Mastek, Michelle Franka et al. 6 citations

N-Methyl-d-aspartate receptor (NMDA-R) hypofunctioning has been hypothesized to be involved in circuit dysfunctions in schizophrenia (ScZ). Yet, it remains to be determined whether the physiological changes observed following NMDA-R antagonist administration are consistent with auditory gamma-band activity in ScZ which is dependent on NMDA-R activity. This systematic review investigated the...

Evaluation of the Effects of Repetitive Anaesthesia Administration on the Brain Tissues and Cognitive Functions of Rats with Experimental Alzheimer's Disease.

Medicina (Kaunas, Lithuania) August 5, 2024 Nuray Camgoz Eryilmaz, Mustafa Arslan, Ayşegül Küçük et al. 3 citations

Introduction: We evaluated the effects of repeated ketamine, propofol, and ketamine + propofol administration on cognitive functions and brain tissue of elderly rat models with streptozotocin-induced Alzheimer's disease. Materials and Methods: Thirty elderly male Wistar Albino rats were divided into five groups: control (Group C), Alzheimer's (Group A), Alzheimer's + ketamine (Group AK),...

Intravenous Sedation and Analgesia in a Pediatric Emergency Department: A Retrospective Descriptive Study.

Cureus August 1, 2024 Madalena Carvalho, Ana Teresa Guerra, Marta Moniz et al.

Background Painful procedures in the pediatric emergency department often require the use of sedation and analgesia to ensure adequate pain control, a right of children and adolescents. This study aims to describe the procedural sedation and analgesia with intravenous medications performed in a pediatric emergency department. Methods This is a retrospective descriptive study of intravenous...

mTORC1 activation in presumed classical monocytes: observed correlation with human size variation and neuropsychiatric disease.

Aging July 26, 2024 Karl Berner, Naci Oz, Alaattin Kaya et al. 1 citation

Gain of function disturbances in nutrient sensing are likely the largest component in human age-related disease. Mammalian target of rapamycin complex 1 (mTORC1) activity affects health span and longevity. The drugs ketamine and rapamycin are effective against chronic pain and depression, and both affect mTORC1 activity. Our objective was to measure phosphorylated p70S6K, a marker for mTORC1...

Hippocampal PACAP signaling activation triggers a rapid antidepressant response.

Military Medical Research July 23, 2024 Hai-Lou Zhang, Yan Sun, Zhang-Jie Wu et al. 24 citations

The development of ketamine-like rapid antidepressants holds promise for enhancing the therapeutic efficacy of depression, but the underlying cellular and molecular mechanisms remain unclear. Implicated in depression regulation, the neuropeptide pituitary adenylate cyclase-activating polypeptide (PACAP) is investigated here to examine its role in mediating the rapid antidepressant response. The...

DOI: 10.1186/s40779-024-00548-1 (opens in new tab) Full text (opens in new tab) Ketamine Antidepressant response Optogenetic Depression treatment +3

Exploring the interplay of chronic toxoplasmosis and NMDAR dysfunction: Insights into schizophrenia-like behaviors and therapeutic potential.

Open veterinary journal July 1, 2024 Seyedeh Mina Masoumi, Mohammad Reza Youssefi, Seyed Shapoor Reza Shojaei 2 citations

Chronic toxoplasmosis has been strongly implicated in the development of psychosis and schizophrenia. Additionally, the understanding of schizophrenia has been significantly reshaped by insights into N-methyl-D-aspartate receptor (NMDAR) hypofunction. This study aimed to compare the behavioral, antioxidant, and NMDAR changes in mice subjected to Toxoplasma gondii infection and those treated...

DOI: 10.5455/OVJ.2024.v14.i7.13 (opens in new tab) Full text (opens in new tab) Ketamine Antioxidant status Behavioral alterations Toxoplasma gondii +4