避免行为的性别差异和小鼠的威胁记忆动态:雌性周期和遗传背景之间的相互作用
Garret L Ryherd1, Averie L Bunce1, Haley A Edwards1
1Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA.
Hormones and behavior
|October 9, 2023
概括
遗传背景和卵巢激素在雄性和雌性小鼠中不同地影响与焦虑相关的行为,如回避和威胁记忆. 这些发现突出了基因驱动因素和激素调节的焦虑内型.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 遗传学 是一个
- 行为科学 行为科学
背景情况:
- 焦虑症在全球范围内很常见,女性的患病率更高.
- 遗传因素和卵巢激素可能相互作用,影响性差异的焦虑易感性.
- 了解这些相互作用对于开发针对性焦虑症治疗至关重要.
研究的目的:
- 研究基因背景和卵巢激素如何影响小鼠避开行为和威胁记忆中的性别差异.
- 为了识别特定的杂交小鼠菌株,以模拟焦虑症的各个方面.
- 为了确定雌性周期对这些行为的影响.
主要方法:
- 在四个同系菌株 (C57Bl/6J, 129S1/SVlmJ, DBA/2J, BALB/cJ) 的雄性和雌性小鼠中测试了回避行为和暗示威胁记忆.
- 监测期周期的不同阶段的行为.
- 分析了性别差异和特定菌株的行为模式.
主要成果:
- 独立于性别,小鼠菌株表现出不同的避开和威胁记忆的特征.
- 在大多数菌株中,在高激素阶段 (孕期) 中,回避行为下降,除了DBA/2J.
- 威胁条件和灭绝中的性别差异依赖于菌株,C57Bl/6J和129S1/SvlmJ线表现出相反的模式.
结论:
- 与焦虑症相关的行为内类型是受遗传影响的,是可分离的.
- 循环卵巢激素可以进一步调节这些受遗传影响的行为.
- 这些发现提供了对遗传学和激素在焦虑障碍中的复杂相互作用的见解.
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