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·头颈疾病·

肥胖儿童血抵抗素与代谢指标的关系*

作者:陆喜燕 董国庆 陈 昱 刘婉趋 钟丽华

所属单位:南方医科大学附属深圳妇幼保健院儿科 (广东 深圳 518028)

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摘要

目的 探讨肥胖儿童血抵抗素与代谢指标的关系。方法 选择单纯性肥胖儿童45例,同时选35例健康儿童为对照组。 所有儿童清晨测量身高、体质量、腰围(WC)和臀围,计算体块指数(BMI)和腰臀比(WHR)、腰围身高比(WHtR),同时 静脉采血检测血清胰岛素(FINS)、糖(FBG)、胆固醇(TC)、三酰甘油(TG)、高密度脂蛋白胆固醇(HDL-C)、低密度脂 蛋白胆固醇(LDL-C)等,计算稳态模型胰岛素抵抗指数(HOMA-IR=FINS×FBG/22.5)。采用ELISA法测定血抵抗素浓 度。结果 单纯性肥胖儿童血清抵抗素浓度为27.76(17.35,53.23)ug·L-1,明显高于健康对照组的21.53(15.85, 29.36)ug·L-1,Z=-2.076,P=0.038;抵抗素与BMI、WC、WHR、WHtR、血TG呈正相关,r分别=0.25、0.333、 0.261、0.322、0.462,P分别=0.026、0.023、0.020、0.004、0.000,而与IR无相关性,r=0.180,P=0.112。结论 抵抗素在肥胖儿童明显升高,其血液水平与肥胖程度及腹型肥胖、血TG水平密切相关。

Objective To investigate the relationship between resistin and metabolic index in obese children. Methods Fortyfive cases of simple obese children and 35 healthy children of similar age and gender (control group) were enrolled. Their fasting height, body mass, waist circumference(WC) and hip circumference were measured, and body mass index(BMI), waist to hip circumference ratio(WHR), waist circumference to height ratio(WHtR) were calculated in the early morning. The serum levels of insulin (FINS), sugar (FBG), cholesterol (TC), three acyl glycerin (TG), highdensity lipoprotein cholesterol (HDL-C) and low density lipoprotein cholesterol (LDL-C) were detected at same time, which contributed to the calculation of homeostasis model assessment-Insulin resistance (IR=FINS×FBG/22.5). Serum resistin levels were measured by ELISA. Results Serun resistin level in obese group was 27.76(17.35, 53.23) ug·L-1, significantly higher than 21.53(15.85, 29.36) ug·L-1 of the healthy control, Z=-2.076, P=0.038. It was positively correlated with BMI, WC, WHR, WHtR and serum TG level, all P<0.05, and no correlated with IR. Conclusion Serun resistin level obviously increase in obese children, and it was closely related to obesity degree(especially abdominal obesity) and serum TG level.

【关键词】抵抗素;肥胖;代谢指标;儿童

【中图分类号】R723.14

【文献标识码】A

【DOI】10.3969/j.issn.1009-3257.2016.04.001

前言

抵抗素(resistin)是由Steppan等[1]于2001年首 先报道的脂肪组织分泌的新多肽激素,由114个氨基 酸组成,通常以二聚体的形式存在,其生理作用目前 尚不完全明确。有报道成人血清抵抗素浓度与血糖浓 度、体内脂肪含量相关[2]。为了解抵抗素与儿童肥胖 的关系,我们观察了单纯性肥胖儿童的血清抵抗素变 化,并探讨抵抗素与体脂、血脂等代谢指标的关系。