schizophrenia – Page 3

Effects of hallucinogenic drugs on the human heart

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Hallucinogenic drugs like LSD and psilocybin affect not only the brain but also the heart. These drugs increase heart rate and contractility mainly through specific serotonin and histamine receptors. While these effects might have therapeutic potential for psychiatric conditions, prolonged use can damage heart valves and cause dangerous arrhythmias. Understanding these cardiac effects is crucial for safe medical use and treatment of overdoses.

Molecular insights into the modulation of the 5HT 2A receptor by serotonin, psilocin, and the G protein subunit Gqα

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This study uses computer simulations to understand how psilocin (the active compound in magic mushrooms) and serotonin interact with a brain receptor called 5HT 2A R. The research shows that both molecules prefer to bind to a deeper part of the receptor rather than a shallower area, and that a protein called Gqα is essential for keeping the receptor in its active state. These findings could help scientists develop better medicines for depression and anxiety.

Neural mechanisms underlying psilocybin’s therapeutic potential – the need for preclinical in vivo electrophysiology

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Psilocybin, the active compound in magic mushrooms, shows promise for treating depression and other mental health conditions. This review examines how psilocybin works in the brain, particularly by affecting brain regions involved in self-reflection and emotion regulation. The authors argue that new brain recording techniques are needed to fully understand how psilocybin produces its beneficial effects, which could help improve treatments for people with severe depression.

Reconsidering evidence for psychedelic-induced psychosis: An overview of reviews, a systematic review, and meta-analysis of human studies

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This research review examined whether people with schizophrenia can safely participate in psychedelic-assisted therapy treatments. Researchers analyzed 131 studies and found that psychedelics rarely cause new psychosis in the general population (0.002%), though the risk is slightly higher in people with existing schizophrenia (3.8%). While the immediate risk appears manageable, about 13% of people who develop psychosis from psychedelics go on to develop schizophrenia, suggesting caution is still needed.

The Effect of Combined Treatment of Psilocybin and Eugenol on Lipopolysaccharide-Induced Brain Inflammation in Mice

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This study tested whether psilocybin (an active compound from magic mushrooms) combined with eugenol (a natural compound from cloves) could reduce brain inflammation in mice. Researchers gave mice a substance that triggers inflammation in the brain and then treated them with these compounds before or after the inflammation started. The combination treatment, especially at a 1:50 ratio of psilocybin to eugenol, significantly reduced multiple inflammatory markers in the brain, suggesting this combination could potentially be helpful for treating brain inflammation-related conditions.

“Plants of the Gods” and their hallucinogenic powers in neuropharmacology — A review of two books

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This review examines two books about plants that have been used in religious and healing rituals across many cultures for their mind-altering properties. The author verifies that the hallucinogenic plants described in Carlos Castaneda’s popular books about a Yaqui sorcerer are accurately portrayed pharmacologically. The review explains how different sacred plants like peyote, certain mushrooms, and nightshade varieties affect the brain through various chemical pathways, while noting their dangers when misused.

Impaired spatial memory in adult vitamin D deficient BALB/c mice is associated with reductions in spine density, nitric oxide, and neural nitric oxide synthase in the hippocampus

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This study found that adults with vitamin D deficiency have impaired spatial memory and reduced brain structures called dendritic spines in the hippocampus, the brain region responsible for learning and memory. The researchers identified that low vitamin D decreases nitric oxide production in the brain, which is important for forming and maintaining the synaptic connections needed for memory formation. Importantly, when vitamin D was supplemented back to deficient mice, the brain’s ability to produce nitric oxide was restored, suggesting vitamin D supplementation could potentially improve cognitive function in vitamin D-deficient individuals.

The palmitoyl-CoA ligase Fum16 is part of a Fusarium verticillioides fumonisin subcluster involved in self-protection

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Fusarium verticillioides is a fungus that produces fumonisin B1, a poisonous compound that can contaminate corn and harm human and animal health. Remarkably, the fungus has evolved special protective mechanisms to survive its own poison. This study discovered that five genes in the fungus work together to shield it from fumonisin’s toxic effects by either breaking down the toxin or boosting the production of protective molecules called ceramides in cell membranes.

Cell adhesion presence during adolescence controls the architecture of projection-defined prefrontal cortical neurons and reward-related action strategies later in life

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During teenage years, the brain undergoes important structural changes that set the stage for adult decision-making abilities. This study found that a cell adhesion protein called β1-integrin plays a critical role during adolescence in stabilizing connections between brain cells in the prefrontal cortex. When this protein was missing during the teenage years, adult mice struggled to make good decisions about rewards and could not adjust their behavior when circumstances changed. The research suggests that proper brain development during adolescence requires these cellular adhesion molecules to build the neural circuits needed for intelligent decision-making later in life.

Identification of a psychiatric risk gene NISCH at 3p21.1 GWAS locus mediating dendritic spine morphogenesis and cognitive function

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Researchers identified a gene called NISCH that increases the risk of schizophrenia and bipolar disorder. When this gene is overactive, it changes the shape of connections between brain cells and impairs working memory in mice. Interestingly, blood pressure medications like clonidine can reduce NISCH activity and improve cognitive function, suggesting these drugs might help psychiatric patients.

Disease: schizophrenia