与性别和年龄相关的因素驱动着MASLD的病理生理学
Ajay K Yadav1, Justin J MacNeill1, Aleksei Krylov1
1Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana, USA.
Hepatology communications
|August 26, 2024
概括
这项研究揭示了小鼠对高脂肪饮食的性别特异反应,突出了男性和女性不同的代谢功能障碍相关的脂肪性肝病 (MASLD) 途径,这对于开发向疗法至关重要.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 代谢性疾病研究研究.
- 研究中的动物模型.
背景情况:
- 与代谢功能障碍相关的脂肪性肝病 (MASLD) 与肥胖有关,患病率和病理生理学受到性别和年龄的影响.
- 了解MASLD中的性别和年龄特定机制对于个性化医学至关重要.
- 西方饮食中的动物模型是确定代谢失调的药物点的关键.
研究的目的:
- 为了研究 MASLD 的取决于性别和年龄的分子机制.
- 为了比较高脂肪饮食 (HFD) 对不同年龄的雄性和雌性小鼠的影响.
- 为了确定MASLD的潜在的性别特异性药物点.
主要方法:
- 年轻和年长的雄性和雌性小鼠被食高脂肪饮食 (HFD) 或低脂肪饮食.
- 分析了肝脏代谢组 (>600个分子) 和转录组概况.
- 关键的代谢和基因表达标记被量化.
主要成果:
- 在两种性别中,HFD诱导了肥胖,葡萄糖不耐受和肝肥胖症,但男性表现出更严重的代谢特征.
- 男人表现出肝脏二甲基甘油和甘糖的增加,细胞外基质和炎症性基因表达的增加.
- 在女性中,衰老加剧了肝病理,降低了甲胺和改变了氧化应激和脂质分区基因表达.
结论:
- 观察到明显的性别特异性对HFD的反应,影响了MASLD的发展.
- 这项研究强调了包括两性在MASLD药物发现中的重要性.
- 针对性MASLD疗法需要对老龄化动物中的分子机制进行进一步的表征.
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