Circ Cardiovasc Genet:通过遗传风险和儿童期临床风险因素预测成年后肥胖

2017-06-20 fengxiangxin MedSci原创

肥胖是心血管疾病已知的危险因素之一。如果能够早期预测发生肥胖的风险,那么预防措施应当更加有效。先前的研究已经证明很多单核苷酸多态性位点与身体质量指数(BMI)相关。近期在知名医学期刊Circ Cardiovasc Genet上发表的一项研究通过机器学习方法评估了儿童期临床风险因素和遗传风险因素在预测成年后肥胖中的作用。

肥胖是心血管疾病已知的危险因素之一。如果能够早期预测发生肥胖的风险,那么预防措施应当更加有效。先前的研究已经证明很多单核苷酸多态性位点与身体质量指数(BMI)相关。近期在知名医学期刊Circ Cardiovasc Genet上发表的一项研究通过机器学习方法评估了儿童临床风险因素和遗传风险因素在预测成年后肥胖中的作用。

共有来自年轻芬兰人心血管风险研究的2262名参与者参加了此项研究,研究者从他们的童年(3-18岁)开始连续随访31年。数据分为训练集(n=1625)和验证集(n=637)。使用增强的机器学习技术将已知的遗传风险因素效应(97个单核苷酸多态性)的检测作为所有97个单核苷酸多态性或19个最有意义的单核苷酸多态性的加权遗传风险评分(WGRS97或WGRS19)。并使用来自Bogalusa心脏研究(BHS)的外部数据验证WGRS97和WGRS19。

WGRS19同时提高了训练组(曲线下面积:AUC = 0.787 vs AUC = 0.744,P<0.0001)和验证组(AUC = 0.769 vs AUC = 0.747,P = 0.026)成年后肥胖预测的准确性。WGRS97只提高了训练组的预测准确性(AUC = 0.782 vs AUC = 0.744,P<0.0001),没有提高验证组的预测准确性(AUC = 0.749 vs AUC = 0.747,P = 0.785)。较高WGRS19和WRGS97分别与9年后和6年后较高的身体质量指数相关。使用BHS数据重复分析证实了我们关于WGRS19和WGRS97与体重指数相关的结果,

WGRS19提高了预测成年后肥胖的准确性,预测精度在3-6岁的幼儿中最高,而在年龄较大的儿童(9-18岁)中,成年后肥胖风险可以用童年期的临床因素来预测更准确。该模型的建立有助于筛查出儿童中将发展为肥胖的高危人群。

原始出处:

Seyednasrollah, F., J. Makela, N. Pitkanen, et al., Prediction of Adulthood Obesity Using Genetic and Childhood Clinical Risk Factors in the Cardiovascular Risk in Young Finns Study. Circ Cardiovasc Genet, 2017. (3).

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    2018-01-08 cy0324
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    2018-02-10 quxin068
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    2018-05-29 canlab
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    2017-06-20 fengxiangxin301

    神奇,感觉有朝一日人体可以当做机器一样对待了

    0

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