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在处于青春期前期的压力暴露后立即给予皮质,并不能防止长期的压力诱导的行为改变
Laura Perez-Caballero1, Isabelle Guillot de Suduiraut2, Leire R Romero3
1Institut de Neurociències, Universitat Autònoma de Barcelona, Barcelona 08193, Spain; Departament de Psicobiologia i de Metodologia de les Ciències de la Salut, Universitat Autònoma de Barcelona, Barcelona 08193, Spain.
Psychoneuroendocrinology
|August 15, 2024
概括
在老鼠中,青春期周围的压力降低了成年人的社交能力,而皮质激素治疗并没有阻止这一点. 压力影响和荷尔蒙反应因性别而异,突出显示需要针对性别的干预措施.
科学领域:
- 神经科学是一个神经科学.
- 内分泌学 在内分泌学.
- 行为科学 行为科学
背景情况:
- 与压力相关的疾病与下丘脑-垂体-上腺 (HPA) 轴功能障碍有关.
- 在创伤后给予皮质醇可以防止不适应性应激反应.
- 在近青春期 (一个关键的发育窗口) 中,葡萄糖皮质类药物的影响仍然在很大程度上未经测试.
研究的目的:
- 为了调查葡萄糖皮质激素治疗在周围青春期压力后的短期和长期影响.
- 在老鼠模型中评估类似焦虑的,探索性的,社交性的,无情的和应对压力的行为.
- 评估潜在的行为性差异和对压力和治疗的皮质激素反应.
主要方法:
- 利用老鼠模型对周围青春期的压力.
- 在近青春期,在压力后给予皮质.
- 在青春晚期和成年期进行行为测试,包括对焦虑,探索,新奇反应,社交性,愉悦感和应对压力的评估.
- 包括男性和女性受试者来检查性别差异.
主要成果:
- 青春期周围的压力导致老鼠的成年人社交能力下降,焦虑或类似抑郁症的行为没有显著变化.
- 在周围青春期压力后给予皮质并没有改善观察到的压力诱导的行为变化.
- 特定的压力诱导的行为变化和皮质激素反应被发现是性别特异的.
结论:
- 青春期周围的压力对社会行为有持久的负面影响,而这些负面影响并没有通过皮质激素治疗来扭转.
- 压力反应和荷尔蒙特征的性别特异显而易见,这表明有不同的生物途径.
- 了解这些性别差异对于制定与压力相关疾病的定制治疗策略至关重要.
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