Research Keyword: Synaptic transmission

Serotonin and psilocybin activate 5-HT1B receptors to suppress cortical signaling through the claustrum

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Researchers found that serotonin and psilocybin (the active compound in magic mushrooms) work through the same brain mechanism to suppress certain neural signals in a brain region called the claustrum. This region controls how different parts of the cortex communicate with each other. The study shows that psilocybin directly targets serotonin 5-HT1B receptors to quiet down signals from one brain area to another, which may explain how psychedelics change cortical network activity and alter consciousness.

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GluN2B-mediated regulation of silent synapses for receptor specification and addiction memory

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Researchers studied how a specific brain protein called GluN2B affects addiction memories from cocaine use. They found that removing this protein reduced the formation of ‘silent synapses’ – immature brain connections created by cocaine – and weakened drug-related memories. However, this also unexpectedly made mice more active, suggesting that GluN2B normally helps control both addiction memory and activity levels. The findings provide new insights into how addiction memories form and suggest potential ways to treat addiction.

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Cerebral Hypoxia-Induced Molecular Alterations and Their Impact on the Physiology of Neurons and Dendritic Spines: A Comprehensive Review

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This review explains how low oxygen levels in the brain damage nerve cells and their connection points (dendritic spines) through a cascade of molecular changes. The brain normally has protective mechanisms, but severe or prolonged hypoxia overwhelms these defenses, leading to memory loss and cognitive problems. Several molecular pathways and supporting cells called astrocytes and microglia can help protect neurons. Understanding these protective mechanisms may lead to new treatments for brain conditions caused by low oxygen, such as stroke.

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Axin2 coupled excessive Wnt-glycolysis signaling mediates social defect in autism spectrum disorders

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Autism spectrum disorder affects social abilities in millions of people, but the underlying causes remain poorly understood. This research discovered that in the brains of people with autism, certain cellular processes that control energy and signaling become overactive, particularly in the region controlling social behavior. The good news is that the researchers found a drug-like compound called XAV939 can restore normal function by blocking the abnormal interaction between two key proteins, potentially offering a new treatment approach.

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