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Content Provider | PubMed Central |
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Author | Aizawa, Toru Yamauchi, Keishi Yamada, Masayuki |
Abstract | Since there had been no previous studies of alterations in insulin sensitivity, glucose-stimulated insulin secretion, beta cell function and glucose effectiveness during the development of non-diabetic hyperglycemia in Asian populations, we conducted a longitudinal study of such changes in 244 Japanese adults with normal glucose tolerance (median BMI 23.3 kg/m2 and age 51 yrs). The median follow-up period was 3.3 yrs. One hundred and eighty-two subjects maintained normal glucose tolerance (nonprogressors). After excluding the 3 subjects who progressed to diabetes, we analyzed the 59 who developed non-diabetic hyperglycemia (progressors), of which 31 progressed to impaired fasting glucose and 28 to impaired glucose tolerance. Whole body insulin sensitivity was estimated by ISIMatsuda, glucose-stimulated insulin secretion by [δIRI0-30/δPG0-30] and Stumvoll indices, hepatic insulin sensitivity by quantitative insulin sensitivity check index (QUICKI) and 1/fasting IRI, beta cell function by oral disposition index (DIO) ([δIRI0-30/δPG0-30]∙[ISIMatsuda]), and glucose effectiveness by an OGTT-derived index (SgIO). ISIMatsuda (p <0.05), [δIRI0-30/δPG0-30], DIO and SgIO (both p <0.01), but not QUICKI, 1/fasting IRI, or Stumvoll-1st and -2nd phases, were lower in the progressors at baseline. This group was also characterized by the following: 1) ISIMatsuda, DIO and SgIO were reduced by 34%, 32% and 11%, respectively (all p <0.01); 2) QUICKI and 1/fasting IRI diminished by 21% and 5%, respectively (both p <0.01); and 3) no significant changes were found in [δIRI0-30/δPG0-30], Stumvoll-1st and -2nd phases or BMI during the follow-up. In the nonprogressors, no indices changed significantly during the follow-up. Our study concluded that during the transition from normal glucose tolerance to non-diabetic hyperglycemia in this non-obese population, whole body insulin sensitivity, hepatic insulin sensitivity, beta cell function, and glucose effectiveness were all attenuated, but no significant changes in glucose-stimulated insulin secretion occurred. Also of note is the fact that the transition took place without any accompanying increase in BMI. |
Related Links | http://dx.doi.org/10.1186/2193-1801-3-252 |
Starting Page | 252 |
File Format | |
ISSN | 21931801 |
e-ISSN | 21931801 |
Journal | SpringerPlus |
Volume Number | 3 |
Language | English |
Publisher | Springer International Publishing |
Publisher Date | 2014-05-20 |
Access Restriction | Open |
Rights Holder | Springer International Publishing |
Subject Keyword | Research in Higher Education |
Content Type | Text |
Resource Type | Article |
Subject | Multidisciplinary |
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