Scientists have conducted a preclinical study showing that prolonged alcohol exposure in mice leads to decreased activity in certain neurons of the brain.

The results of the study were published in the Journal of the Society for Neuroscience.

These findings help shed light on the mechanisms of alcohol addiction and related emotional disorders. The research was carried out by a team from the University of North Carolina at Chapel Hill. Female mice were used in the experiment, as they tend to consume alcohol more actively than males under laboratory conditions.

During the experiment, researchers examined neurons in the central amygdala — a brain region associated with emotional responses, stress, and the regulation of alcohol intake. They found that ethanol exposure suppressed the activity of these neurons. Meanwhile, administration of psilocin — a compound derived from psychedelics and considered a potential treatment for alcohol-related disorders — further reduced neuronal activity and was accompanied by a decrease in alcohol consumption among the mice.

The results showed that even moderate alcohol exposure can alter the activity of neurons in the central amygdala, confirming their key role in regulating alcohol-related behavior and emotional responses. The scientists emphasized that reduced activity of these neurons may lower the tendency to consume alcohol, whereas increased activity is associated with heightened alcohol dependence and stress responses.

The researchers noted that the current findings apply only to animal models and require further investigation to determine whether the same mechanisms operate in humans. Nonetheless, the discovery offers an important direction for future therapy: neurons of the central amygdala may become targets for treating alcohol- and stress-related disorders.

Overall, the study demonstrates how exposure to toxins such as alcohol can alter the functioning of the brain’s emotional centers and influence behavior. In the future, these insights may contribute to developing new strategies for the prevention and treatment of alcohol-related disorders.

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