由于MC4R缺乏而导致的肥胖与降低胆固醇,甘油三和心血管疾病风险相关
Stefanie Zorn1,2, Rebecca Bounds1, Alice Williamson3,4
1University of Cambridge Metabolic Research Laboratories and NIHR Cambridge Biomedical Research Centre, Institute of Metabolic Science, University of Cambridge, Cambridge, UK.
Nature medicine
|October 16, 2025
概括
大脑黑色皮质素4受体 (MC4Rs) 的缺陷降低了人类的胆固醇和甘油三,降低了心血管疾病的风险. 这表明MC4Rs是脂质代谢和心脏健康的关键调节者.
科学领域:
- 内分泌学 在内分泌学.
- 代谢综合征是代谢综合征的一种.
- 心血管科学 心血管科学
背景情况:
- 肥胖与脂质不良和心血管疾病有关,但潜在的机制尚不清楚.
- 大脑的黑色皮质素4受体 (MC4Rs) 影响动物模型中的体重和脂质代谢,但人类的相关性尚不确定.
- 了解MC4R在人体脂质代谢中的作用对于预防心血管疾病至关重要.
研究的目的:
- 调查黑色皮质素4受体 (MC4R) 缺乏对人体脂质水平和心血管疾病风险的影响.
- 为了确定MC4R功能丧失变体是否与改变的脂质谱和心血管结果有关.
主要方法:
- 与英国生物银行对照组 (n=336,728) 相比,对由于MC4R缺乏症导致肥胖的个体的脂质水平的分析 (n=460).
- 在英国生物银行的MC4R功能丧失变体载体中评估脂质谱和心血管疾病风险.
- 在患有MC4R缺乏症的人群中,高脂肪餐后对食后胃脂血和代谢标记的评估与对照.
主要成果:
- 与对照人群相比,患有MC4R缺乏症的成年人表现出较低的总胆固醇,LDL胆固醇和甘油三水平,独立于脂肪.
- 携带MC4R变异的携带者显示脂质水平降低,心血管疾病风险降低,即使在调整体重后也是如此.
- 患有MC4R缺乏症的个体表现出的食后甘油三反应和改变的脂肪酸氧化标志物,有利于脂肪储存.
结论:
- 中央MC4Rs在调节人体脂质代谢方面发挥着重要作用.
- 缺乏MC4R与改善的脂质样本和降低心血管疾病风险有关.
- 针对MC4Rs是一个潜在的治疗策略,用于管理失脂症和心血管风险.
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