血清25-氧维生素D,与维生素D相关的变体,以及慢性肝病的风险
Qian Shen1, Shanshan Shi2, Haoxue Wang1
1Department of Epidemiology and Biostatistics and Ministry of Education Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.
较高的血清25-氧维生素D (25(OH) D水平与非酒精性脂肪肝疾病,肝硬化和肝癌的风险降低有关. 这些保护作用在影响维生素D受体活性和维生素D结合蛋白亲和力的特定遗传变异的个体中更为明显.
科学领域:
- 营养科学 营养科学
- 肝病学 肝病学是一种肝病学.
- 遗传学 是一个遗传学.
背景情况:
- 血清25-基维生素D (25(OH) D) 与肝硬化和肝癌等肝脏疾病之间的关系尚未完全理解.
- 基因变异在维生素D代谢中对这些关联的改变作用需要进一步研究.
研究的目的:
- 检查血清25(OH) D与非酒精性脂肪性肝病 (NAFLD),肝硬化和肝癌的关联.
- 调查与维生素D相关的遗传变异,特别是影响维生素D结合蛋白 (VDBP) 和维生素D受体 (VDR) 活性的变异,是否会改变这些关联.
主要方法:
- 利用了来自401,551名参与者的英国生物库数据,其中有25个可用OH) D测量.
- 使用VDBP变体 (rs4588,rs7041) 估计的VDBP结合亲缘关系和基于VDR相关基因的VDR活性计算 (rs11568820,rs2228570,rs1544410).
- 分析了发生的NAFLD,肝硬化和肝癌,评估了血清25(OH) D和遗传变异之间的相互作用.
主要成果:
- 血清25(OH) D升高 (≥50nmol/L与<25nmol/L) 与NAFLD (HR 0.70),肝硬化 (HR 0.43) 和肝癌 (HR 0.65) 的风险显著降低有关.
- 肝纤维化/肝硬化和门性高血压之间的逆相关性在低VDR活性的人群中更强 (p相互作用=0.024,p相互作用=0.019).
- 在具有低 afinity VDBP 异型 (p相互作用=0.033) 的参与者中,25(OH) D 与肝癌风险的关联性更为明显.
结论:
- 血清25(OH) D对NAFLD,肝硬化和肝癌起着保护作用.
- 在VDR和VDBP的遗传变异影响维生素D对肝脏健康的保护作用,特别是在具有较低VDR活性或VDBP亲和力的人群中.
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