在年轻和中年绝经前雌性大鼠之间比较内源性下丘脑和血清OT水平
Rie Masaki1, Yuri Yamamoto1, Kou Tamura1
1Department of Obstetrics and Gynecology, Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan.
The journal of medical investigation : JMI
|October 27, 2024
概括
绝经前老鼠的体脂肪增加和较高的下丘脑氧化素 (OT) 和OT受体 (OTR) mRNA. 然而,血清OT水平没有变化,这表明单独的OT可能无法预防更年期的代谢问题.
科学领域:
- 内分泌学 在内分泌学.
- 神经科学是一个神经科学.
- 代谢研究研究 代谢研究
背景情况:
- 已知催产素 (OT) 能调节食物摄入量和体重,特别是在肥胖患者中.
- 降低OT疗效与代谢障碍有关,而雌激醇 (E2) 给药可以提高血清OT.
- 在绝经前妇女中体重增加很常见,但她们的内源性OT水平尚不清楚.
研究的目的:
- 为了比较年轻与中年绝经前雌性大鼠的内源性下丘脑和血清OT水平.
- 为了研究这些大鼠的血清雌激素和瘦素水平之间的关系.
- 探索OT在更年期前体重增加和代谢变化中的作用.
主要方法:
- 年轻和中年绝经前老鼠之间的体重,内脏和皮下脂肪重量的比较.
- 测量血清中催产素 (OT),雌激醇 (E2) 和素水平.
- 使用RT-qPCR对OT和OT受体 (OTR) 下丘脑mRNA水平的量化.
主要成果:
- 与年轻的老鼠相比,中年老鼠的体重和脂肪量更高.
- 中年老鼠的血清瘦素,下丘脑OT mRNA和OTR mRNA水平显著升高.
- 血清OT或E2水平在年龄组之间没有发现显著差异;血清OT与下丘脑OT mRNA或血清E2没有相关性.
结论:
- 在绝经前老鼠中,雌激醇 (E2) 似乎可以维持血清中催产素 (OT) 水平.
- 中年老鼠中高水平的下丘脑OT/OTRmRNA可能是由E2.以外的其他因素驱动的.
- 绝经前老鼠的体重和脂肪增加可能不仅仅归因于OT,这表明单独给予OT可能不足以预防绝经前代谢障碍.
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