社会压力会引起对大脑的自身免疫反应
Yusuke Shimo1,2, Flurin Cathomas1,2, Hsiao-Yun Lin1,2
1Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY 10029.
概括
压力诱导的针对大脑的自身免疫反应有助于抑郁. 针对这些大脑反应性抗体可能为严重抑郁症 (MDD) 和相关的免疫异常提供新的治疗方法.
科学领域:
- 神经免疫学 神经免疫学
- 心理神经免疫学 心理神经免疫学
- 这是一种自身免疫力.
背景情况:
- 在自身免疫性疾病和精神疾病,如主要抑郁症 (MDD) 之间存在很高的并发症.
- 连接自身免疫和抑郁症的机制尚未完全理解.
- 压力会影响适应性免疫系统,导致抑郁症.
研究的目的:
- 研究压力如何影响适应性免疫系统.
- 探索压力诱导的自身免疫和抑郁之间的联系.
- 确定大脑反应性抗体在压力易感性和社会回避中的作用.
主要方法:
- 慢性社会失败压力 (CSDS) 鼠标模型.
- 对小鼠和人类MDD患者的抗体反应和自身免疫的分析.
- 评估T细胞和B细胞种群,IgG抗体水平,以及大脑反应性抗体的积累.
- 在小鼠身上进行的B细胞枯竭实验.
主要成果:
- 在社会压力下的小鼠中,血清抗体升高,宫淋巴结中的T细胞和B细胞扩张.
- 容易受到压力的小鼠增加了与社交回避相关的大脑反应性IgG抗体.
- 在患有MDD的人群中发现了脑反应性IgG抗体的增加,与无情相关.
- 缺乏B细胞的小鼠表现出对社会压力的弹性.
结论:
- 压力可以诱导对大脑的自身免疫反应,导致抑郁和社会回避.
- 产生抗体的B细胞在压力敏感性中起着至关重要的作用.
- 针对自身免疫反应可能是患有免疫异常的MDD患者的治疗策略.
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