老年2型糖尿病患者骨质疏松与冠状动脉钙化的关系

目的 探讨2型糖尿病患者骨质疏松与冠状动脉钙化的关系.方法 根据双能X线骨密度检查结果,将82例老年2型糖尿病患者分成骨质疏松组与非骨质疏松组,分别进行冠状动脉双源CT检查,计算冠状动脉总钙化积分(TCS),同时测定血钙(Ca)、磷(P)、甲状旁腺素(PTH)水平等.结果 骨质疏松组与非骨质疏松组比较,血钙[(2.32±0.15)mmol/L对(2.04±0.20)mmol/L]、PTH[(5.64±1.97)pmol/L对(5.01±1.93)pmol/L]、TCS[(374.4±433.5)分对(242.5±224.8)分],差异均有统计学意义(t值分别为5.790、5.331、2.248,P<0.05).相关性分析显示,2型糖尿病患者TCS与L2、L3、L4、股骨颈骨密度呈负相关(r值分别为-0.310、-0.246、-0.290、-0.284,P<0.05),与钙、PTH呈正相关(r值分别为0.324、0.575,P<0.05).结论 2型糖尿病患者骨质疏松与冠状动脉钙化之间存在一定的相关性,钙磷代谢异常及代偿性PTH水平升高可能起到一定的作用.

Association of osteoporosis and coronary artery calcification in elderly patients with type 2 diabetes mellitus

Objective To investigate the association of osteoporosis and coronary artery calcification in elderly patients with type 2 diabetes mellitus (T2DM).Methods A total of 82 elderly T2DM patients underwent dual-energy x-ray absorptiometry scanning (DXA) of lumbar spine and femur neck for getting bone mineral density (BMD),and dual-source computed tomography (DSCT) of coronary artery for calculating calcification score and total calcification score (TCS).All subjects were divided into two groups:osteoporosis group and non-osteoporosis group.The levels of serum calcium (Ca),parathyrin (PTH),phosphorus (P),alkaline phosphatase (AKP),triglyceride (TG),total cholesterol (TC),high density lipoprotein-cholesterol (HDL-C),low density lipoproteincholesterol (LDL-C) and glycosylated hemoglobin (HbA1c) were detected.Results Compared with non-osteoporosis group,the levels of serum Ca,PTH and TCS were higher [(2.32± 0.15)mmol/L vs.(2.04±0.20) mmol/L;(5.64±1.97) pmol/L vs.(5.01±1.93) pmol/L;(374.4±433.5) scores vs.(242.5±224.8) scores,t=5.790,5.331 and 2.248,all P<0.05] in osteoporosis group.Correlation analysis showed TCS was negatively associated with BMD of L2-4 and femur neck,while was positively associated with serum Ca and PTH (r=0.310,0.246,0.290,0.284 and 0.324,0.575 all P<0.05).Conclusions Osteoporosis is associated with coronary atherosclerosis.TCS could be considered as an index for judging the relationship between osteoporosis and coronary atherosclerosis.