在具有主动和被动应对策略的雌性老鼠之间,偶然的多巴胺反应是不同的
Vsevolod V Nemets1, Ekaterina P Vinogradova2, Vladislav Zavialov1
1Institute of Translational Biomedicine, Saint Petersburg State University, 199034 Saint Petersburg, Russia.
Biomolecules
|October 26, 2024
概括
雌性老鼠表现出明显的压力反应. 社会失败 (SD) 后的被动应对导致神经化学和行为变化,与积极应对不同,突出性别特异性的压力适应.
科学领域:
- 神经科学是一个神经科学.
- 行为科学 行为科学
- 内分泌学 在内分泌学.
背景情况:
- 对女性神经化学和行为适应压力的理解有限.
- 社会失败 (SD) 是研究应激反应的一个相关模型.
研究的目的:
- 研究社会失败对雌性大鼠多巴胺 (DA) 动态和行为的短期影响.
- 根据主动与被动应对策略区分压力反应.
主要方法:
- 在雌性Wistar大鼠中进行社会失败 (SD) 程序.
- 行为评估:Porsolt测试和新型对象识别.
- 电气唤起的中边缘DA释放测量.
- 在耗尽协议下DA流量动态.
主要成果:
- 被动应对的老鼠表现出不动性降低,认知能力增强,并在SD后24小时增加DA释放.
- 活跃应对大鼠在行为或DA释放方面没有显著变化.
- 在被动的,但不是活跃的,应对老鼠中,DA流量动态发生了变化.
结论:
- 具有被动应对策略的雌性老鼠更容易受到压力诱导的神经化学和行为改变的影响.
- 这些变化可能代表生物体的短期不适应性或保护性反应.
- 强调压力反应和应对机制的性别差异.
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