• J. Korean Med. Sci. · Feb 2012

    The ability of β-cells to compensate for insulin resistance is restored with a reduction in excess growth hormone in Korean acromegalic patients.

    • Soo Kyoung Kim, Sunghwan Suh, Ji In Lee, Kyu Yeon Hur, Jae Hoon Chung, Moon-Kyu Lee, Yong-Ki Min, Jae Hyeon Kim, Jong-Hyun Kim, and Kwang-Won Kim.
    • Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
    • J. Korean Med. Sci. 2012 Feb 1; 27 (2): 177183177-83.

    AbstractThe aim of this study was to assess the prevalence of diabetes and to study the effects of excess growth hormone (GH) on insulin sensitivity and β-cell function in Korean acromegalic patients. One hundred and eighty-four acromegalic patients were analyzed to assess the prevalence of diabetes, and 52 naïve acromegalic patients were enrolled in order to analyze insulin sensitivity and insulin secretion. Patients underwent a 75 g oral glucose tolerance test with measurements of GH, glucose, insulin, and C-peptide levels. The insulin sensitivity index and β-cell function index were calculated and compared according to glucose status. Changes in the insulin sensitivity index and β-cell function index were evaluated one to two months after surgery. Of the 184 patients, 17.4% were in the normal glucose tolerance (NGT) group, 45.1% were in the pre-diabetic group and 37.5% were in the diabetic group. The insulin sensitivity index (ISI(0,120)) was significantly higher and the HOMA-IR was lower in the NGT compared to the diabetic group (P = 0.001 and P = 0.037, respectively). The ISI(0,120) and disposition index were significantly improved after tumor resection. Our findings suggest that both insulin sensitivity and β-cell function are improved by tumor resection in acromegalic patients.

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