Suppr超能文献

雄性信息素预处理和对副嗅球前脑输入进行光遗传学抑制对发情期雌性小鼠性行为影响的比较。

A comparison of the effects of male pheromone priming and optogenetic inhibition of accessory olfactory bulb forebrain inputs on the sexual behavior of estrous female mice.

作者信息

McCarthy Elizabeth A, Kunkhyen Tenzin, Korzan Wayne J, Naik Ajay, Maqsudlu Arman, Cherry James A, Baum Michael J

机构信息

Department of Biology, Boston University, Boston, MA 02215, United States.

Department of Psychological and Brain Sciences, Boston University, Boston, MA 02215, United States.

出版信息

Horm Behav. 2017 Mar;89:104-112. doi: 10.1016/j.yhbeh.2016.12.011. Epub 2017 Jan 5.

Abstract

Previous research has shown that repeated testing with a stimulus male is required for ovariectomized, hormone-primed female mice to become sexually receptive (show maximal lordosis quotients; LQs) and that drug-induced, epigenetic enhancement of estradiol receptor function accelerated the improvement in LQs otherwise shown by estrous females with repeated testing. We asked whether pre-exposure to male pheromones ('pheromone priming') would also accelerate the improvement in LQs with repeated tests and whether optogenetic inhibition of accessory olfactory bulb (AOB) projection neurons could inhibit lordosis in sexually experienced estrous female mice. In Experiment 1, repeated priming with soiled male bedding failed to accelerate the progressive improvement in LQs shown by estrous female mice across 5 tests, although the duration of each lordosis response and females' investigation of male body parts during the first test was augmented by such priming. In Experiment 2, acute optogenetic inhibition of AOB inputs to the forebrain during freely moving behavioral tests significantly reduced LQs, suggesting that continued AOB signaling to the forebrain during mating is required for maximal lordotic responsiveness even in sexually experienced females. Our results also suggest that pheromonal stimulation, by itself, cannot substitute for the full complement of sensory stimulation received by estrous females from mounting males that normally leads to the progressive improvement in their LQs with repeated testing.

摘要

先前的研究表明,对于卵巢切除且经激素预处理的雌性小鼠,需要用雄性刺激物反复测试才能使其具有性接受能力(表现出最大的脊柱前凸商数;LQ),并且药物诱导的雌二醇受体功能的表观遗传增强加速了动情期雌性小鼠在反复测试中LQ的改善。我们研究了预先接触雄性信息素(“信息素预处理”)是否也会加速反复测试中LQ的改善,以及对副嗅球(AOB)投射神经元的光遗传学抑制是否会抑制有性经验的动情期雌性小鼠的脊柱前凸。在实验1中,用弄脏的雄性垫料反复预处理未能加速动情期雌性小鼠在5次测试中LQ的逐步改善,尽管这种预处理增加了每次脊柱前凸反应的持续时间以及雌性小鼠在第一次测试中对雄性身体部位的探究。在实验2中,在自由移动行为测试期间对前脑的AOB输入进行急性光遗传学抑制显著降低了LQ,这表明即使对于有性经验的雌性小鼠,交配期间AOB向前脑的持续信号传导对于最大程度的脊柱前凸反应也是必需的。我们的结果还表明,信息素刺激本身不能替代动情期雌性小鼠从正在交配的雄性那里获得的全部感官刺激,而这种刺激通常会导致它们在反复测试中LQ的逐步改善。

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍。

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

文档翻译

学术文献翻译模型,支持多种主流文档格式。

立即体验