Korean Diabetes Journal 1997;21(4):365-371.
Published online January 1, 2001.
Serum Fasting Proinsulin Level as a Predictor for Development of NIDDM in Korean Subjects.
Geon Sang Park, Chan Soo Shin, Kyong Soo park, Seong Yeon Kim, Hong Kyu Lee, Sun Ja Kwon, Yong Soo Park
Proinsulin is raised in people with NIDDM. Hyperproinsulinemia is thought to be a predictor for the subsequent development of NIDDM. We studied to investigate whether hyperproinsulinemia can predict the development of NIDDM in Korean subjects. METHOD: This study was performed as a nested case-control study. The case group was 67 newly developed diabetic patients out of 1193 initially non-diabetic cohott in Yonchon county. We have also selected 66 age-sex-B541-WHR matched control group who remain non-diabetic for 2 years. We compared baseline insulin, proinsulin and proinsulin/insulin ratio between two groups, RESULTS: There was no significant difference in baseline fasting insulin levels[46,77+/-17.3 vs 42.87+/- 11.6(pmol/L)] between converters to diabetes and non-converters. However, the baseline proinsulin levels in converters to diabetes were higher than those in non-converters.[16.07+/-14.3 vs 8.72+/-5.2(pmol/L)) The baseline proinsulin/imulin ratio in converters was also higher than those in non-converters. [0.30+/-0.17 vs 0.20+/-0.10] CONCLUSION: The results suggest that fasting hyper-proinsulinemia may be a predictor for subsequent development of NIDDM in Korean subjects.
Key Words: NIDDM, Predictor, Proinsulin, Hyperproinsulinemia

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