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Sex Differences In The Interaction Between Alcohol And mTORC1.
Biorxiv : the Preprint Server for Biology
|May 7, 2024
Summary
Mechanistic target of rapamycin complex 1 (mTORC1) drives alcohol use in males but not females. Rapamycin, an mTORC1 inhibitor, reduced alcohol seeking in males but not females, indicating sex-dependent effects in alcohol use disorder (AUD).
Area of Science:
- Neuroscience
- Pharmacology
- Addiction Research
Background:
- The mechanistic target of rapamycin complex 1 (mTORC1) is crucial for synaptic plasticity and learning, and implicated in alcohol use disorder (AUD) in males.
- Previous studies in male rodents demonstrated mTORC1 activation in brain regions like the nucleus accumbens (NAc) and orbitofrontal cortex (OFC) following alcohol exposure.
- Pharmacological inhibition of mTORC1 with rapamycin reduced alcohol seeking and consumption in male animals.
Conclusions:
- The study reveals a significant sex difference in the involvement of mTORC1 in alcohol use disorder.
- mTORC1 activation does not appear to be a critical neuroadaptive mechanism driving heavy alcohol consumption in female mice.
- These findings suggest that therapeutic strategies targeting mTORC1 for AUD may need to consider sex-specific mechanisms.
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