葡萄糖耐量受损患者胰岛素抵抗与冠状动脉侧支循环的相关性研究
2016-10-27常学伟邱春光张守彦马惠芳田利平魏毅东魏经汉
常学伟,邱春光,张守彦,马惠芳,田利平,魏毅东,魏经汉
葡萄糖耐量受损患者胰岛素抵抗与冠状动脉侧支循环的相关性研究
常学伟,邱春光,张守彦,马惠芳,田利平,魏毅东,魏经汉
目的:探讨葡萄糖耐量受损(IGT)患者胰岛素抵抗(IR)与冠状动脉(冠脉)侧支循环之间的关系。
方法:入选行冠脉造影术患者227例,男性131例,平均年龄(53.2±11.0)岁。采用HOMA2法测定IR(HOMA2-IR)指数,采用Gensini积分系统定量评定冠脉狭窄程度,按Rentrop分级法对冠脉侧支循环情况进行分级,并依此将187例IGT且至少有一支血管存在慢性闭塞病变的患者分为4组:Rentrop0级组(n=55),Rentrop1级组(n=42),Rentrop2级组(n=39),Rentrop3级组(n=51);糖耐量正常且冠脉狭窄<50%患者作为对照组(n=40)。
结果:与对照组患者相比,4个Rentrop 不同分级组的患者餐后2 h血糖(2 h-PBG)、糖化血红蛋白(HbA1c)、HOMA2-IR指数和Gensini积分明显增高,空腹胰岛素(FINS)明显减低;与Rentrop3级组和2级组患者相比,Rentrop1级组患者2 h-PBG和Rentrop 0级组患者2 h-PBG、HbA1c、HOMA2-IR指数、Gensini积分明显增高,Rentrop0级组患者FINS明显减低,差异均有统计学意义(P<0.05)。多元逐步回归分析的结果显示,HOMA2-IR指数(R=0.518,P<0.05)、HbA1c(R=1.916,P<0.05)、2 h-PBG(R=2.130,P<0.05)和FINS(R=1.547,P<0.05)可能是冠脉狭窄程度的危险因素。二元Logistic逐步回归分析的结果显示,侧支循环不良者(Rentrop0级和1级的患者)与HOMA2-IR指数(比值比=1.679,95% 可信区间:1.101~2.558,P=0.016)相关。
结论:IGT伴冠状动脉慢性闭塞的患者,HOMA2-IR指数显著升高,IR是冠状动脉狭窄程度和侧支循环形成的独立危险因素。
冠状动脉疾病;胰岛素抗药性;葡萄糖耐量试验
Abstract
Objective: To study the relationship between insulin resistance (IR) and coronary collateral circulation in patients with impaired glucose tolerance (IGT).
Methods: A total of 227 patients with coronary angiography (CAG) were studied. There were 131 patients with male gender and the average patient’s age was (53.2 ± 11.0) years. IR (HOMA2-IR) index was measured by HOMA2 method, the severity level of coronary stenosis was assessed by Gensini scoring system, collateral circulation condition was determined by Rentrop classification. 187 IGT patients were divided into 4 groups: Rentrop 0 group, n=55, Rentrop 1 group, n=42, Rentrop 2 group, n=39 and Rentrop 3 group, n=51; in addition, Control group, n=40 patients with normal glucose tolerance and coronary stenosis<50%.
Results: Compared with Control group, all patients in 4 Rentrop groups had increased 2h-PBG, HbA1c, HOMA2-IR and Gensini score, while decreased fasting insulin (FINS), all P<0.05. Compared with Rentrop 3 group and Rentrop 2 group, the patients in Rentrop 1 group and Rentrop 0 group had elevated 2h-PBG, HbA1c, HOMA2-IR and Gensini score, while Rentrop 0 group had reduced FINS, all P<0.05. Multivariable regression analysis showed that HOMA2-IR index (R=0.518, P<0.05), HbA1c (R=1.916,P<0.05), 2h-PBG (R=2.130, P<0.05) and FINS (R=1.547, P<0.05) might be related to the severity of coronary stenosis. Binary regression analysis indicated that poor collateral circulation (the patients in Rentrop 0 group and Rentrop 1 group) was related to HOMA2-IR index (OR=1.679, 95% CI 1.101-2.558, P=0.016).
Conclusion: HOMA2-IR index could be significantly higher in patients with IGT combining chronic coronary occlusion. IR was the independent risk factor for the severity of coronary stenosis and coronary collateral formation.
(Chinese Circulation Journal, 2016,31: 854.)
葡萄糖耐量受损(IGT)是糖尿病的前期表现,是冠心病的重要危险因素,急性冠状动脉(冠脉)综合征患者餐后2 h血糖(2 h-PBG)和胰岛素水平与评价冠脉粥样硬化程度的Gensini积分呈正相关,其值越高冠脉病变的程度越重[1]。……
