2型糖尿病患者血清视黄醇结合蛋白4水平及相关影响因素的研究

目的 探讨2型糖尿病(T2DM)患者血清视黄醇结合蛋白4(RBP4)的变化及其相关影响因素.方法 根据体重指数(BMI)将80例T2DM患者分为肥胖T2DM组(BMI≥25 k/m~2)、非肥胖T2DM组(BMI<25 kg/m~2),将30例正常体重非糖尿病者设为对照组.检测其空腹血清脂联素(APN)、RBP4、胰岛素(FINS)水平,同时测定空腹血糖(FBG)、身高、体重、腰围、臀围、糖化血红蛋白(HbA_1c)、三酰甘油(TG)、总胆固醇(TC)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C),计算BMI、腰臀比(WHR)和稳态模式评估法胰岛素抵抗指数(HOMA-IR).分析各组问RBP4水平的变化,并与上述其他指标进行相关分析.结果 RBP4在肥胖T2DM组和非肥胖T2DM组中显著高于对照组分别为(30.02±5.32)、(20.10±5.45)、(12.02±3.45)mg/L](P<0.01),在肥胖T2DM组显著高于非肥胖T2DM组(P<0.01).单因素相关分析显示RBP4与TG、BMI、FBG、WHR、FINS、HOMA-IR呈正相关,与APN呈负相关(相关系数分别为0.225、0.697、0.323、0.557、0.272、0.461、-0.398).结论 血清RBP4在T2DM患者中显著升高,RBP4可能在胰岛素抵抗及T2DM的发生、发展过程中起了重要的作用.

Levels of serum retinol-binding protein 4 and related factors in type 2 diabetic patients

Objective To investigate the levels of serum retinol-binding protein 4 (RBP4 )and related factors in type 2 diabetic patients. Methods Eighty type 2 diabetic and patients 30 non-diabetic subjects were recruited into obese-diabetic group body mass index (BMI) 1525 kg/m~2],normal-weighted diabetic group(BMI < 25 kg/m~2)and control group(BMI < 25 kg/m~2). Serum adiponectin(APN), RBP4 and hemoglobin A_1c (HbA_1c)triacylglycerol (TG),total cholesterol (TC).high density lipoprotein cholesterol (HDL-C),low density lipoprotein cholesterol (LDL-C)and were measured on fasting samples. BMI, waist/hips girth ratio (WHR) and insulin resistance index (HOMA-IR) were calculated. The correlation between RBP4 and other factors was analyzed. Results The concentration of RBP4 was significantly increased in obese-diabetic group and normal-weighted diabetic group compared with that in control group (30.02 ± 5.32), (20.10 ± 5.45), (12.02 ± 3.45) mg/L] (P < 0.01). The concentration of RBP4 was higher in obese-diabetic group than that in normalweighted diabetic group (P < 0.01). Univariate analysis showed serum RBP4 was positively associated with TG,BMI,FBG, WHR,FINS,HOMA-IR and negatively associated with APN (r = 0.225, 0.697, 0.323,0.557, 0.272, 0.461, -0.398). Conclusions The concentration of RBP4 is significantly higher in type 2 diabetic patients compared with that in normal subjects. RBP4 possibly plays an important role in the insulin resistance and the occurrence and development of type 2 diabetes.