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由MASLD驱动的骨损失的性变态

Galen M Goldscheitter^1,2,3, Mulugeta Seneshaw^4,3, Faridoddin Mirshahi^4,3

¹Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, USA.

Scientific reports

|July 2, 2025

概括

代谢功能障碍相关的性肝病 (MASLD) 在雄性小鼠中引起骨质损失,导致严重的骨衰弱. 肝脏分泌的特定蛋白质可能驱动这种骨质再吸收,提供新的治疗点.

科学领域:

肝病学肝病学是一种肝病学.
骨生物学骨生物学骨生物学
代谢疾病代谢疾病

背景情况:

代谢功能障碍相关的脂肪性肝病 (MASLD) 是一种具有严重风险的流行病.
骨质疏松症和骨折是MASLD的新兴并发症,其潜在机制尚不清楚.
这些骨并发症的两性性质需要进一步调查.

研究的目的:

为了研究饮食诱导的MASLD的雄性小鼠的骨表型.
为了确定潜在的分子机制,将MASLD与骨质损失联系起来.
为了探索与MASLD相关的骨病的性别差异.

主要方法:

使用的 DIAMOND 小鼠暴露在西方或对照饮食中长达 48 周.
评估骨参数,包括椎骨和皮质骨,以及机械完整性.
使用NicheNet分析肝脏基因表达和PTH诱导的骨损失模型.

主要成果:

患有MASLD的雄性 DIAMOND小鼠表现出渐进的骨质损失,影响椎骨和皮质骨,并在48周后导致机械脆弱.
雌性小鼠被保护免受MASLD相关的骨损失和骨脆弱性.
确定了Ctgf,Rarres2,Anxa2,Fgf21和Mmp13作为潜在的肝脏分泌的骨质再吸收的媒介.

结论:

这项研究提供了MASLD骨质损失及其进展的首个临床前证据.
建议Ctgf,Rarres2,Anxa2,Fgf21和Mmp13作为MASLD相关的骨病理学的新分子驱动因素.
这些发现突出了在MASLD中管理骨并发症的潜在治疗点.

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