综合的转录基因下丘脑-垂体-卵巢轴网络分析揭示了能量可用性对卵子生产在层中的作用
Jianling Peng1, Yong Cui1, Haiping Liang1
1College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China.
Animal nutrition (Zhongguo xu mu shou yi xue hui)
|February 14, 2025
概括
能量剥夺通过层次地破坏下丘脑-垂体-卵巢 (HPO) 轴来损害卵子生产. 重新养部分恢复了生殖能力,突出了能量.
科学领域:
- 动物科学动物科学
- 生殖生物学 生殖生物学
- 内分泌学 在内分泌学.
背景情况:
- 层层的卵产量严重依赖于能源的可用性.
- 下垂体-垂体-卵巢 (HPO) 轴调节卵泡发育和排卵,对能量状态敏感.
研究的目的:
- 在产母的波动能量条件下研究HPO轴的调节机制.
- 阐明能量剥夺和随后的再养对生殖表现和相关分子通路的影响.
主要方法:
- 使用了三组Hy-line棕色层:对照组 (随意养),被剥夺能量 (禁食期) 和重新养 (间歇性禁食随后连续养).
- 测量了生殖参数 (产卵率,卵巢指数,卵泡计数) 和激素水平 (E2,P4,LH,FSH).
- 进行了下丘脑的转录组分析,以确定分子变化.
主要成果:
- 能量剥夺显著降低了产卵率,卵巢指数和卵泡数量,在重新养后部分恢复.
- 荷尔蒙变化 (E2,E2/P4比率,LH) 反映了卵泡数量的动态,而FSH显示了相反的模式.
- 转录组分析显示,下丘脑中与神经递质受体和神经相关的基因的下调,抑制了GnRH分泌和下游性腺激素合成.
结论:
- 能量剥夺通过影响下丘脑信号传递来破坏HPO轴,导致抑制性腺激素释放和卵巢功能受损.
- 减少能量可用性会对卵泡发育和卵子生产产生负面影响.
- 重新养可以部分恢复生殖能力,强调能量平衡的关键作用.
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