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微生物的组成,功能和应激弹性或易感性:揭开性别特异性的模式
Arax Tanelian1, Bistra Nankova1,2, Mariam Miari3
1Department of Biochemistry and Molecular Biology, New York Medical College, Valhalla, NY, 10595, USA.
Biology of sex differences
|February 26, 2024
概括
肠道微生物组的差异影响雄性和雌性大鼠的应激弹性. 创伤前后的性别特异性微生物变化凸显了针对压力相关疾病的量身定制治疗的必要性.
科学领域:
- 神经科学是一个神经科学.
- 微生物学 微生物学
- 精神病学是一个精神病学.
背景情况:
- 与男性相比,女性对创伤后情绪障碍的敏感性更高.
- 个人对压力的抵抗力各不相同,受包括肠道微生物群在内的因素的影响.
- 情绪障碍和性机制的性别相关差异仍然不清楚.
研究的目的:
- 研究肠道微生物组成,功能和代谢物的性别特异性差异.
- 检查这些因素如何影响老鼠模型中的压力易感性和弹性.
- 了解肠道微生物组在应激反应中的性别差异中的作用.
主要方法:
- 在雄性和雌性Sprague-Dawley大鼠中使用了单次长期压力 (SPS) 模型.
- 评估行为反应,并将老鼠分类为SPS-弹性 (SPS-R) 或SPS-敏感 (SPS-S).
- 分析了肠道微生物的组成,功能和便,体和大脑组织中的代谢物.
主要成果:
- 男性显示了先前存在的交腺轴变化;女性显示SPS后改变了Claudin-5表达.
- 在男性中,α多样性始终较低;β多样性揭示了微生物群落中的性别特异分离.
- 观察到微生物属 (例如,乳酸菌),功能和短链脂肪酸 (SCFA) 的性别特异性变化.
结论:
- 不同的创伤前和创伤后肠道微生物特征与性别特异性的应激弹性有关.
- 这些发现强调了针对压力相关疾病的性别特定治疗策略的必要性.
- SPS引发了不同的行为反应,弹性女性比弹性男性表现出更少的焦虑和更多的社交互动.
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