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Akira Yamauchi, Izumi Takei, Akira Kasuga, Yuko Kitamura, Norimi Ohashi, Satomi Nakano, Sumiyo Takayama, Shinya Nakamoto, Fuminori Katsukawa and Takao Saruta

Yamauchi A, Takei I, Kasuga A, Kitamura Y, Ohashi N, Nakano S, Takayama S, Nakamoto S, Katsukawa F, Saruta T. Depression of dehydroepiandrosterone in Japanese diabetic men—comparison between non-insulin-dependent diabetes mellitus and impaired glucose tolerance. Eur J Endocrinol 1996;135:101–4. ISSN 0804–4643

Hyperglycemia is known to reduce dehydroepiandrosterone (DHEA) circulating levels; however, the mechanism by which hyperglycemia decreases DHEA is not elucidated. In this study, serum DHEA and DHEA sulfate (DHEA-S) levels were compared in 50 men with non-insulin-dependent diabetes mellitus (NIDDM) and 50 age-matched men with impaired glucose tolerance (IGT) receiving only diet therapy. Serum concentrations of DHEA and DHEA-S in the NIDDM group were significantly lower than in the IGT group (7.8 and 9.7 nmol/l vs 3.4 and 4.9 μ mol/l, respectively; p< 0.01) but there was no significant difference in immunoreactive insulin between the two groups. When the results from both groups were combined, HbA1c was significantly inversely related to DHEA (r = −0.243. p<0.01) and DHEA-S (r = −0.305, p<0.01). Immunoreactive insulin showed no correlation with DHEA and DHEA-S. Multiple regression analysis showed that HbA1c was independently negatively related to both DHEA and DHEA-S. We conclude that hyperglycemia may decrease serum DHEA and DHEA-S in Japanese men with NIDDM, but the depression of DHEA(-S) is independent of serum insulin level.

Akira Yamauchi, Department of Internal Medicine, Keio University School of Medicine. 35 Shinanomachi, Shinjuku-ku, Tokyo 160, Japan