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Company: Sartorius
Catalog#: PT600
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Multiple Simultaneous Acute Stresses in Mice: Single or Repeated Induction
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2020-08-05
[Abstract]  Stress is crucial to the survival of an organism, but excessive stress can lead to psychological disorders including depression, anxiety, substance abuse, and suicidality. The prevailing notion is that chronic stress promotes adverse outcomes on brain and body health, whereas acute stressors are generally benign. Notably, acute events such mass shootings or natural disasters are now emerging as significant sources of cognitive and emotional problems including post-traumatic stress disorder (PTSD). These events are characterized by the simultaneous occurrence of physical, emotional, and social stresses, which last minutes to hours. Hence, there is a need to model such multiple concurrent acute stresses (MAS) to uncover the mechanisms by which they lead to profound adverse outcomes. The MAS ... [摘要]  [摘要]压力对机体的生存至关重要,但过度的压力会导致心理障碍,包括抑郁、焦虑、药物滥用和自杀。目前流行的观点是,慢性压力会对大脑和身体健康产生不利影响,而急性应激通常是良性的。值得注意的是,大规模枪击或自然灾害等急性事件正在成为包括创伤后应激障碍(PTSD)在内的认知和情绪问题的重要来源。这些事件的特点是身体、情感和社会压力同时发生,持续几分钟到几个小时。因此,有必要对这种多重并发急性应激(MAS)进行建模,以揭示它们导致严重不良后果的机制。这里描述的MAS范式包括同时让啮齿类动物暴露在几个不同的压力源下,包括在明亮的光线和非常嘈杂的环境中与同龄人挤在一起。此外,MAS范式可以一次使用或反复施加来模拟复杂的、重复的现代生活压力,促进我们对随之而来的心理和认知障碍的机械理解。

[背景]压力是常见的,也是不可避免的。严重或慢性的压力会导致一系列认知、情绪和身体问题。为了了解压力的分子、细胞和生理基础及其对大脑功能的影响,必须在实验室模拟压力。人们普遍认为,慢性压力会导致不良的健康结果,而急性压力可能是良性的或有利的。例如,由不可预测的间歇性束缚诱发的慢性应激损害了空间记忆(Peay等人,2020年),而一小时的急性束缚应激可增强雄性大鼠的新的物体识别记忆(Brivio等人,2020年)。然而,以前对急性应激的治疗方法通常只施加单一或“简单”的压力。值得注意的是,群体性枪击或自然灾害等急性应激性生活事件可能只持续几分钟到几个小时,但同时也包括身体、情感和社会压力。这些事件现在被证明会在相当多的个体中引发长期负面结果,如创伤后应激障碍(North ...

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