性激素结合球蛋白与新诊断2型糖尿病关系的初步探讨

目的 测定新诊断2型糖尿病患者血清性激素结合球蛋白(SHBG)的水平,分析血清SHBG 水平与糖化血红蛋白(HbA1c)和胰岛素抵抗的关系,初步探讨SHBG与2型糖尿病的关系.方法 应用酶联免疫吸附法对新诊断的2型糖尿病患者60例(病例组)和健康体检者30例(对照组),进行空腹血清SHBG水平的检测.计算稳态模型胰岛素抵抗指数(HOMA-IR).结果 病例组血清SHBG(22.6±9.7)mmol/L,较对照组的(43.1±11.9)mmol/L明显减低(P＜0.05);SHBG与三酰甘油、低密度脂蛋白胆固醇、空腹胰岛素、HbA1c、lgHOMA-IR呈负相关(r=-0.351、-0.361、-0.426、-0.645、-0.483,P<0.05),与高密度脂蛋白胆固醇呈正相关(r=0.453,P<0.01).以SHBG为应变量,进行多元线性回归分析,结果HbA1c(β=-0.614,P=0.000)、lgHOMA-IR(β=-0.473,P=0.014)、高密度脂蛋白胆固醇(β=0.234,P=0.048)进入方程.结论 新诊断2型糖尿病患者血清SHBG水平减低,HOMA-IR和HbA1c是影响SHBG的关键指标,提示SHBG可能与2型糖尿病发生、发展密切相关.

Abstract：

Objective To explore the possible mechanism of sex hormone-binding globulin (SHBG) in diabetes mellitus by detecting the level of serum SHBG in patients with newly diagnosed type 2 diabetes mellitus (T2DM),and analyze the correlation between serum SHBG and insulin resistance.Methods SHBG levels were determined by enzyme linked immunosorbent assay (ELISA) in 30 normal controls (control group) and 60 newly diagnosed T2DM patients(T2DM group).HOMA-IR was calculated.Results The levels of serum SHBG in T2DM group were significantly lower than those in control group [(22.6 ±9.7)mmol/L vs.43.1 ±11.9) mmol/L,P <0.05]; SHBG level was negatively correlated with triglyceride(TG),low density hpoprotein cholesterol(LDL-C),fasting insulin(FINS),hemoglobintHbA1c) and lgHOMA-IR (r =-0.351,-0.361,-0.426,-0.645,-0.483,P <0.05),and positively correlated with high density lipoprotein cholesterol (HDL-C) (r =0.453,P <0.01).When SHBG was analyzed as a dependent variable by multiple linear regression,HbA1c (β =-0.614,P =0.000),lgHOMA-IR (β =-0.473,P = 0.014) and HDL-C (β = 0.234,P= 0.048) were into the equation.Conclusions Patients who have diagnosed T2DM show low level of serum SHBG.HOMA-IR and HbA1c are key indicators of SHBG,suggesting that SHBG may be closely related with T2DM.

Study on the association between sex hormone-binding globulin and newly diagnosed type 2 diabetes mellitus

Objective To explore the possible mechanism of sex hormone-binding globulin (SHBG) in diabetes mellitus by detecting the level of serum SHBG in patients with newly diagnosed type 2 diabetes mellitus (T2DM),and analyze the correlation between serum SHBG and insulin resistance.Methods SHBG levels were determined by enzyme linked immunosorbent assay (ELISA) in 30 normal controls (control group) and 60 newly diagnosed T2DM patients(T2DM group).HOMA-IR was calculated.Results The levels of serum SHBG in T2DM group were significantly lower than those in control group [(22.6 ±9.7)mmol/L vs.43.1 ±11.9) mmol/L,P <0.05]; SHBG level was negatively correlated with triglyceride(TG),low density hpoprotein cholesterol(LDL-C),fasting insulin(FINS),hemoglobintHbA1c) and lgHOMA-IR (r =-0.351,-0.361,-0.426,-0.645,-0.483,P <0.05),and positively correlated with high density lipoprotein cholesterol (HDL-C) (r =0.453,P <0.01).When SHBG was analyzed as a dependent variable by multiple linear regression,HbA1c (β =-0.614,P =0.000),lgHOMA-IR (β =-0.473,P = 0.014) and HDL-C (β = 0.234,P= 0.048) were into the equation.Conclusions Patients who have diagnosed T2DM show low level of serum SHBG.HOMA-IR and HbA1c are key indicators of SHBG,suggesting that SHBG may be closely related with T2DM.