检验医学 ›› 2022, Vol. 37 ›› Issue (7): 618-622.DOI: 10.3969/j.issn.1673-8640.2022.07.004

• 临床应用研究·论著 • 上一篇    下一篇

空腹C肽与肥胖儿童非酒精性脂肪性肝病的相关性

曹佳佳, 张俊峰, 聂文建, 叶青()   

  1. 浙江大学医学院附属儿童医院实验检验中心 国家儿童健康与疾病临床医学研究中心,浙江 杭州 310052
  • 收稿日期:2020-11-15 修回日期:2021-09-10 出版日期:2022-07-30 发布日期:2022-08-26
  • 通讯作者: 叶青
  • 作者简介:叶 青,E-mail: qingye@zju.edu.cn
    曹佳佳,女,1988年生,学士,技师,主要从事代谢综合征相关研究。

Relationship of fasting C-peptide with nonalcoholic fatty liver disease in children with obesity

AO Jiajia, ZHANG Junfeng, NIE Wenjian, YE Qing()   

  1. The Children's Hospital,Zhejiang University School of Medicine,the National Clinical Research Center for Child Health,Hangzhou 310052,Zhejiang,China
  • Received:2020-11-15 Revised:2021-09-10 Online:2022-07-30 Published:2022-08-26
  • Contact: YE Qing

摘要:

目的 探讨空腹C肽与肥胖儿童非酒精性脂肪性肝病(NAFLD)的相关性。方法 选取经腹部超声确诊为NAFLD的肥胖患儿211例(NAFLD组),以119例单纯肥胖儿童作为对照组。检测所有患儿的总蛋白(TP)、白蛋白(Alb)、γ-谷氨酰基转移酶(GGT)、丙氨酸氨基转移酶(ALT)、天门冬氨酸氨基转移酶(AST)、总胆固醇(TC)、三酰甘油(TG)、肌酐(Cr)、空腹血糖(FBG)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)、白细胞(WBC)计数、血小板(PLT)计数、血红蛋白(Hb)、空腹C肽、糖化血红蛋白(HbA1c)、空腹胰岛素(FINS),计算胰岛素抵抗指数(HOMA-IR)。采用倾向性评分匹配法,以性别、年龄、血压、体质量指数(BMI)为协变量,按 1∶1比例构成82对配对,分析空腹C肽与NAFLD的关系。采用多元逐步Logistic回归分析评估NAFLD发生的危险因素。结果 采用倾向性评分匹配后,NAFLD组ALT、AST、GGT、TP、空腹C肽、FINS、HOMA-IR显著高于对照组(P<0.05),其他各项指标2个组之间差异均无统计学意义(P>0.05)。多元逐步Logistic回归分析结果显示,ALT和空腹C肽是NAFLD发生的危险因素[比值比(OR)值分别为1.057、3.307,95%可信区间(CI)分别为1.036~1.078、1.439~7.602]。按空腹C肽的三分位数将所有患儿分为C肽≤1.06 pmol/mL组、C肽1.07~1.41 pmol/mL组、C肽≥1.42 pmol/mL组,调整混杂因素(年龄、性别、BMI、腰围、收缩压、ALT、Cr、TG、HDL-C、HOMA-IR和WBC计数)后,结果显示,C肽≥1.42 pmol/mL是NAFLD发生的危险因素(OR=4.635,95%CI为1.610~13.346)。结论 空腹C肽在肥胖儿童NAFLD发生的早期诊断中一定的临床意义。

关键词: C肽, 非酒精性脂肪性肝病, 肥胖, 儿童

Abstract:

Objective To investigate the relationship of fasting C-peptide with nonalcoholic fatty liver disease(NAFLD) in children with obesity. Methods A total of 211 obese children diagnosed with NAFLD by abdominal ultrasound(NAFLD group) were enrolled,and 119 obese children were enrolled as control group. Among them,serum levels of total protein(TP),albumin(Alb),gamma glutamyltransferase(GGT),alanine aminotransferase(ALT),aspartate aminotransferase(AST),total cholesterol(TC),triglyceride(TG),creatinine(Cr),fasting blood glucose(FBG),high-density lipoprotein cholesterol(HDL-C),low-density lipoprotein cholesterol(LDL-C),white blood cell(WBC) count,platelet(PLT) count,hemoglobin(Hb),fasting C-peptide,glycated hemoglobin A1c(HbA1c),fasting insulin(FINS) were determined,and homeostasis model assessment for insulin resistance(HOMA-IR) was calculated. Using propensity score matching,82 patients were matched in a ratio of 1∶1 with sex,age,blood pressure,body mass index(BMI) as control variables and the relation of fasting C-peptide and the risk of NAFLD were analyzed. Multivariate stepwise Logistic regression analysis was used to evaluate the risk factors of NAFLD. Results After propensity score matching,the levels of ALT,AST,GGT,TP,fasting C-peptide,FINS and HOMA-IR in NAFLD group were higher than those in control group(P<0.05),and there was no statistical significance in the other indicators between the 2 groups(P>0.05). Multivariate stepwise Logistic regression analysis showed that ALT and fasting C-peptide were risk factors for NAFLD [odds ratios(OR) were 1.057 and 3.307,95% confidence intervals(CI) 1.036-1.078 and 1.439-7.602,respectively]. According to the tertiles of fasting C-peptide,the children were classified into C-peptide≤1.06 pmol/mL group,C-peptide 1.07-1.41 pmol/mL group and C-peptide ≥1.42 pmol/mL group. After the adjustment for confounding factors(age,sex,BMI,waist circumference,systolic blood pressure,ALT,Cr,TG,HDL-C,HOMA-IR and WBC count),C-peptide ≥1.42 pmol/mL was a risk factor for NAFLD(OR= 4.635,95%CI 1.610-13.346). Conclusions Fasting C-peptide plays a role in the early diagnosis of NAFLD in children with obesity.

Key words: C peptide, Nonalcoholic fatty liver disease, Obesity, Children

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