Serum .GAMMA.-glutamyltransferase, triglyceride and total cholesterol are possible prediabetic risk markers in young Japanese men

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Author(s)

    • Akehi Yuko
    • Department of Endocrinology and Diabetes Mellitus, School of Medicine, Fukuoka University, Fukuoka, Japan
    • Yamashita Takaaki
    • Department of Laboratory Medicine, School of Medicine, Fukuoka University, Fukuoka, Japan
    • Kawashima Hironobu
    • Department of Laboratory Medicine, School of Medicine, Fukuoka University, Fukuoka, Japan
    • Yanase Toshihiko
    • Department of Endocrinology and Diabetes Mellitus, School of Medicine, Fukuoka University, Fukuoka, Japan
    • Tsutsumi Yoko
    • Department of Endocrinology and Diabetes Mellitus, School of Medicine, Fukuoka University, Fukuoka, Japan
    • Tatsumoto Aki
    • Department of Endocrinology and Diabetes Mellitus, School of Medicine, Fukuoka University, Fukuoka, Japan
    • Yoshida Ryoko
    • Department of Endocrinology and Diabetes Mellitus, School of Medicine, Fukuoka University, Fukuoka, Japan
    • Ohkubo Kumiko
    • Department of Laboratory Medicine, School of Medicine, Fukuoka University, Fukuoka, Japan
    • Takenoshita Hiromasa
    • Department of Endocrinology and Diabetes Mellitus, School of Medicine, Fukuoka University, Fukuoka, Japan
    • Kudo Tadachika
    • Department of Endocrinology and Diabetes Mellitus, School of Medicine, Fukuoka University, Fukuoka, Japan
    • Ashida Kenji
    • Department of Endocrinology and Diabetes Mellitus, School of Medicine, Fukuoka University, Fukuoka, Japan
    • Anzai Keizo
    • Department of Endocrinology and Diabetes Mellitus, School of Medicine, Fukuoka University, Fukuoka, Japan

Abstract

Serum profiles of lipids and⁄or liver enzymes are established markers for the estimation of insulin resistance and diabetic risk in the non-diabetic middle-aged population. To identify prediabetic markers in young subjects, 110 young male subjects (20-29 years of age) with normal glucose tolerance (NGT) were divided into two groups by median body mass index (BMI), <22.18 (n=55) and ≥22.18 (n=55) kg⁄m<SUP>2</SUP>. Indices of insulin sensitivity including HOMA-IR and ISI composite, indices of β-cell function including HOMA-β, insulinogenic index (ΔI<SUB>30</SUB>⁄ΔG<SUB>30</SUB>) and ΔI<SUB>30</SUB>⁄ΔG<SUB>30</SUB>⁄ HOMA-IR were calculated. Statistical associations between these parameters and the serum lipid profiles and liver function were evaluated. Alanine aminotransferase (ALT), γ-glutamyltransferase (GGT), total cholesterol (TC) and triglyceride (TG) levels were inversely correlated with the ISI composite among individuals with BMI ≥22.18 kg⁄m<SUP>2</SUP> but not those with BMI <22.18 kg⁄m<SUP>2</SUP>. Multivariate regression analysis revealed that, in Group N, the plasma glucose levels at 60 min (PG<SUB>60</SUB>) were inversely correlated with the ISI composite and the insulinogenic index, and were positively correlated with the GGT, TC and TG levels. On the other hand, in Group L, PG<SUB>60</SUB> was correlated with the insulinogenic index, TC and TG levels. In conclusion, elevated levels of GGT, TC and TG are good clinical markers to predict diabetic risks, even in young NGT males. Of these, GGT was the most strongly related factor among subjects with relatively high BMI.

Journal

  • Endocrine Journal

    Endocrine Journal 57(11), 981-989, 2010

    The Japan Endocrine Society

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