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Updated: Feb 14, 2026

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Assessment of Sexual Behavior of Male Mice
Published on: March 5, 2020
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在小鼠的MASH进展过程中,初始断开关中的性变态
Pradeep K Rajan1,2, Jacqueline A Sanabria1,2, Mathew S Schade1,2
1Department of Surgery, Joan C. Edwards School of Medicine, Marshall University Huntington, Huntington, WV 25701, USA.
International journal of molecular sciences
|February 13, 2026
概括
这项研究揭示了MASH进展中的性二态性,尽管类似的衰老水平,但男性显示了改变的氧化还原平衡和减少的亡. 这些发现突出了MASH相关肝病早期的性别特异性差异.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 代谢学 代谢学 代谢学
- 细胞生物学 细胞生物学
背景情况:
- 代谢相关的脂肪肝炎 (MASH) 是一种与细胞衰老和肝细胞癌 (HCC) 相关的渐进性肝病.
- 与女性相比,男性的MASH相关HCC发病率是男性的2-4倍.
- 之前的研究表明,ATP1A1信号体在MASH进展期间的晚期亡开关中.
研究的目的:
- 调查ATP1A1和性别特异性在临床前MASH进展期间早期亡切换中的作用.
- 检查高脂肪饮食 (HFD) 的雄性和雌性小鼠的代谢和分子变化.
主要方法:
- 雄性和雌性C57BL/6J小鼠在12,24或48周内被食正常或HFD.
- 评估了NAFLD活动得分,衰老和亡的总体体重,身体组成 (回声MRI),血代谢量 (LC-MS/MS) 和肝脏组织.
- 分析了基因表达 (mTOR1,P53,Grb2,ATP1A1,幸存者,SMAC) 和氧化还原平衡 (GSH:GSSG比率).
主要成果:
- 与女性相比,雄性增加了更多的体重和质量;表现出改变的氧化还原平衡 (更高的GSH:GSSG,较低的眼科) 和不同的代谢概况 (更高的黄油酸).
- 24周后,男性的纤维化得分和亡活性降低,尽管老化水平相似.
- 根据性别或饮食,ATP1A1,幸存者和SMAC的表达没有显著差异,尽管在HFD的男性中观察到ATP1A1和幸存者的上调趋势.
结论:
- 在MASH进展期间对HFD的反应中存在显著的性二态,特别是在从衰老过渡到早期亡-第一次亡开关的过渡过程中.
- 性别特定的代谢和氧化还原变化有助于不同的MASH进展途径.
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