Ann Neurol:内脏肥胖通过炎症引起的深部白质高信号

2018-12-26 xing.T MedSci原创

由此可见,该研究的结果表明,在高内脏脂肪堆积的肥胖受试者深部白质中,选择性地增加了WMH负担,而不依赖于高血压等常见肥胖合并症。中介变量分析提出了内脏肥胖通过增加促炎细胞因子促进深部白质病变,表明它们之间存在病理学机制的联系。需要纵向研究进一步证实这一假设。

白质高信号(WMH)与血管危险因素有关,并增加认知衰退、痴呆和卒中的风险。近日,神经病学领域权威取杂志Annals of Neurology上发表了一篇研究文章,研究人员的目的是在一个特征明确的基于人群的队列中确定肥胖是否会促进区域性WMH。

研究人员使用高分辨率3-Tesla MRI评估了LIFE成人研究(年龄20-82岁; BMI为18.4-55.4kg/m2)中1825名参与者的WMH分布情况以及腰臀比(WHR)、体重指数(BMI)、收缩压/舒张压、高血压糖尿病和吸烟状况、血糖和炎症标志物。体素分析测试了肥胖是否可预测WMH的区域概率。此外,研究人员使用线性回归和结构方程模型中发现血液中测量的高敏C-反应蛋白(CRP)和白细胞介素-6(IL6)的介导效应与肥胖和WMH相关。

即使在调整年龄、性别和收缩压的效应后,WHR也与深部白质中较高的WMH概率有关(平均ß=0.0043(0.0008SE),95%CI为0.00427-0.0043,TFCE/FWE校正p<0.05)。相反,收缩压较高与脑室周围白质区的WMH有关。中介变量分析表明,较高的WHR和较高的BMI均可通过升高的IL6增加深层到脑室周围的WMH比率。

由此可见,该研究的结果表明,在高内脏脂肪堆积的肥胖受试者深部白质中,选择性地增加了WMH负担,而不依赖于高血压等常见肥胖合并症。中介变量分析提出了内脏肥胖通过增加促炎细胞因子促进深部白质病变,表明它们之间存在病理学机制的联系。需要纵向研究进一步证实这一假设。

原始出处:


Leonie Lampe,et al.Visceral Obesity Relates to Deep White Matter Hyperintensities via Inflammation. Annals of Neurology. 2018. https://onlinelibrary.wiley.com/doi/10.1002/ana.25396

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    2019-07-07 yinhl1978
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