摘要目的 研究新HOMA稳态模型(HOMA2)的胰岛素敏感性指数(HOMA2-%S)和分泌功能指数(HOMA2-%B)在临床中的应用价值.方法 利用80例重庆地区多囊卵巢综合征妇女[正常糖耐量(NGT)组50人,糖调节受损(IGR)组30人]的口服葡萄糖耐量试验和Botnia钳夹试验资料,应用传统HOMA稳态模型(HOMA1)计算胰岛素敏感性指数HOMAl-ISI、分泌功能指数HOMA1-β和葡萄糖处置指数DI-HOMA1,借助新HOMA稳态模型计算胰岛素敏感性指数HOMA2-%S、分泌功能指数HOMA2-%B和葡萄糖处置指数DI-HOMA2,分别研究两种敏感性指数(HOMAl-ISI和HOMA2-%S)与Botnia钳夹试验稳态葡萄糖输注速率(GIR)的相关性,以及两种分泌功能指数(HOMA1-β和HOMA2-%B)与第一时相胰岛素分泌(AIR)的相关性.结果 HOMA2-%S与GIR的Pearson线性相关系数为0.503(P<O.01),HOMA 1-ISI与HOMA2-%S的Pearson线性相关系数为0.990(P<O.01).HOMA2-%B与AIR的Pearson线性相关系数为0.382(P<0.01),HOMA1-13与HOMA2-%B的Pearson 线性相关系数为0.976(P<0.01).IGR组的葡萄糖处置指数DI-HOMA2和DI-HOMAl均明显小于NGT组(t=2.825,P<0.0l;t=2.222,P<O.05).结论 与传统HOMA稳态模型(HOMA1)相比较,利用新HOMA稳态模型(HOMA2)计算的HOMA2-%S和HOMA2-%B是一对相对较好的胰岛素敏感性指数和分泌功能指数,可以广泛地应用于临床工作.

abstractsobjective To investigate the ability of insulin sensitivity index HOMA2-%S and secretion function index HOMA2-%B calculated by HOMA2,the new homeostasis model assessment,in clinical application. Methods Eighty female volunteers with polycystic ovary syndrome in Chongqing area [50 subjects with normal glucose tolerance(NGT group)and 30 subjects with impaired glucose regulation(IGR group)]were involved in this study.Thev underwent a 75 g oral glucose tolerance test(OGTF)and the Botnia clamp test. From the data of faming blood samples in OGTF,insulin sensitivity index HOMAI-ISI,secretion function index HOMAl-β and disposal index DI-HOMA1 were calculated by the old homeostasis model assessment(HOMA I),meanwhile insulin sensitivity index HOMA2-%S,secretion function index HOMA2-%B and disposal index(DI-HOMA2) were caleulated by the new homeostasis model assessment (HOMA2).Correlation coefficients between insulin sensitivity index and GIR (the glucose infusion rate at steady state of Botnia clamp test),and between insulin secretion function index and AIR(the acute insulin response in Botnia clamp test),were studied.Results The Pearson's linear correlation coefficient between HOMA2-%S and GIR(r=0.503),HOMA1-ISI and HOMA2-%S (r= 0.990).HOMA2-%B and AIR(r=0.382),HOMA1-B and HOMA2-%B(r=0.976) were all statistically significant(a11 P<0.01).The glucose disposal indexes calculated from the HOMA2 and HOMA1 of 1GR group were significantly lower than those from the NGT group(t=2.825,P<0.Ol;t=2.222,P<0.05). Conclusion The HOMA2 is a better model in evaluating the insulin sensitivity and secretion function and is recommended to be widely used in clinical evaluation.