乐观情绪缓和了美国军方退伍军人的炎症多基因风险和严重抑郁症之间的关系
Ian C Fischer1,2, Cassie Overstreet2,3, Brenda Cabrera-Mendoza2,3
1U.S. Department of Veterans Affairs National Center for Posttraumatic Stress Disorder, VA Connecticut Healthcare System, West Haven, CT, USA.
炎症的遗传风险增加了主要抑郁症 (MDD) 的风险,但乐观可以显著缓冲美国退伍军人的这种脆弱性. 这项研究强调了炎症.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
- 精神病学是一个精神病学.
背景情况:
- 大型抑郁症 (MDD) 是全球残疾的重要原因之一.
- 慢性炎症越来越被认为是导致MDD的因素.
- 了解遗传和心理社会因素对于预防和治疗MDD至关重要.
研究的目的:
- 调查美国退伍军人中对炎症的遗传倾向和MDD风险之间的联系.
- 探索炎症-MDD联系的心理社会调节因素,如乐观.
- 为了确定潜在的生物途径连接炎症和MDD.
主要方法:
- 用英国生物银行数据开发了炎症生物标志物的多基因风险评分 (PRS).
- 在1,660名欧洲裔美国退伍军人中,分析了与MDD查相关的PRS.
- 根据医疗状况和创伤负担进行调整的统计模型,并对心理社会因素进行相互作用分析.
主要成果:
- 炎症性PRS增加显着与MDD查的更高几率相关 (OR=2.51).
- 乐观情绪成为一个重要的调节因素;高乐观情绪在具有高遗传炎症风险的个体中大大降低了MDD风险.
- 途径分析表明丰富的免疫和与大脑相关的基因组,表明生物机制.
结论:
- 对炎症的遗传易感性是MDD的危险因素.
- 乐观可以作为一种保护因素,减轻遗传炎症风险对MDD的影响.
- 这些发现强调了MDD中遗传,炎症和心理因素之间的复杂相互作用.
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