背景恐惧的概括性是受高盐摄入量性别特异影响的
Jasmin N Beaver1,2, Brady L Weber1,2, Matthew T Ford1
1Department of Psychological Sciences, Kent State University, Kent, Ohio, United States of America.
PloS one
|July 13, 2023
概括
在雄性和雌性小鼠中,高盐摄入量会改变恐惧概括的不同. 过多的盐在女性中增加了恐惧泛化,但在男性中减少了恐惧泛化,独立于压力激素.
科学领域:
- 神经科学是一个神经科学.
- 行为科学 行为科学
- 心血管健康 心血管健康
背景情况:
- 恐惧泛化是焦虑和神经精神疾病的一个关键症状.
- 焦虑症经常与心血管疾病同时发生,其中一个危险因素是高盐摄入量.
- 过度食用盐对与焦虑相关的行为,特别是恐惧泛化的影响在很大程度上是未知的.
研究的目的:
- 研究高盐消费对小鼠上下文恐惧获取,表达和概括的影响.
- 为了确定高盐摄入量是否影响与恐惧相关的性别特异性行为概括.
- 评估与高盐摄入量相关的生理压力标志物 (血清度,皮质).
主要方法:
- 成年雄性和雌性C57BL/6J小鼠被食高盐 (4.0%NaCl) 或控制 (0.4%NaCl) 饮食两周或六周.
- 评估了背景恐惧条件,测试发生在训练后48小时或4周.
- 测量血清度和皮质水平以评估透和生理压力.
主要成果:
- 高盐摄入量没有影响恐惧或短期歧视.
- 四周的延迟揭示了性别特异性影响:高盐增加了女性的恐惧泛化,但在男性中减少了恐惧泛化.
- 这些行为变化发生在血清度或皮质水平没有显著改变的情况下.
结论:
- 这项研究提供了第一个证据,即高盐摄入量影响着情境恐惧概括.
- 观察到盐对恐惧概括的性别特异性影响,突出了关键的知识差距.
- 这些发现表明,盐对恐惧概括的影响可能涉及微妙的神经生理机制,而不是公开的压力反应.
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