尿中レジスチン及び遊離インスリン受容体αによる糖尿病リスク指標の構築

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Aim: We want to be able to detect diabetic risky subjects early, and to prevent the onset of diabetes mellitus by performing exercise guidance and offering nutritional education to them. Methods: Two ultrasensitve immunoassays (immune complex transfer enzyme immunoassay; ICT-EIA) for resistin and soluble insulin receptor-a (sIRα) were developed. Urine samples from the patients of diabetes mellitus (DM; n=70), the non-diabetes obese subjects (NDMO; n=43) and the non-diabetes non-obese subjects (NDMNO; n=78) were measured resistin and sIRα using ICT-EIAs. Results: Detection limits of ICT-EIA for resistin and sIRa were 2pg/ml and 0.05pg/ml, respectively. It is possible to measure resistin and sIRa in the urine directly. Resistin in the urine from DM, NDMO and NDMNO were 30.0±36.2, 15.4±17.2 and 17.8±17.4 ng/mg of creatinine, respectively. The urine concentrations of resistin in DM were significantly higher than in the non-diabetes subjects (NDMO and NDMNO) (P<0.05). sIRa in the urine from DM, NDMO and NDMNO were 11.4±21.8, 1.9±1.1 and 1.3±0.8 pg/mg of creatinine, respectively. The urine concentrations of sIRa in DM were significantly higher than in NDM and NDMNO (P<0.001 and P<0.001), respectively. Furthermore, resistin in the urine was positively correlated to sIRa, in the urine. Conclusion: Both resistin and sIRoc in the urine are good markers for the risk of diabetes mellitus. As a result, these markers will be effective for the evaluation of exercise guidance and nutritional education.

尿中レジスチン及び遊離インスリン受容体αによる糖尿病リスク指標の構築

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