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Circulating betatrophin levels are increased in patients with type 2 diabetes and associated with insulin resistance.

Chen X., Lu P., He W., Zhang J., Liu L., Yang Y., Liu Z., Xie J., Shao S., Du T., Su X., Zhou X., Hu S., Yuan G., Zhang M., Zhang H., Liu L., Wang D., Yu X.

CONTEXT: Betatrophin has recently attracted increasing interests as a potential β-cell regenerative therapy in diabetes. However, differences in betatrophin profiles in patients with type 2 diabetes mellitus (T2DM) remain unclear. OBJECTIVE: The objective of the study was to examine circulating betatrophin levels in subjects with different glucose tolerance status and its correlation with insulin resistance. DESIGN, SETTING, AND PARTICIPANTS: Serum betatrophin levels were measured using an ELISA in age-, sex-, body mass index-, and blood lipid-matched subjects with normal glucose tolerance (n = 137), isolated impaired fasting glucose (n = 69), isolated impaired glucose tolerance (n = 120), and newly diagnosed T2DM (n = 112) from the Risk Evaluation of Cancers in Chinese Diabetic Individuals: A Longitudinal study. RESULTS: Serum betatrophin levels were elevated in patients with T2DM compared with subjects with normal glucose tolerance, isolated impaired fasting glucose, or isolated impaired glucose tolerance (798.6 ± 42.5 vs 692.7 ± 29.0, P < .05, vs 682.7 ± 43.0, P < .05, vs 646.8 ± 34.3 pg/mL, P < .01). Betatrophin levels positively correlated with the index of homeostasis model assessment of insulin resistance (partial r = 0.11); inversely correlated with quantitative insulin sensitivity check index (partial r = -0.11), the Gutt insulin sensitivity index (partial r = -0.12), and the Matsuda insulin sensitivity index (partial r = -0.11) after controlling for age, sex, body mass index, and blood lipid in all participants (all values of P < .05). CONCLUSION: Circulating betatrophin levels are increased in patients with T2DM and associated with indexes of insulin resistance.

J. Clin. Endocrinol. Metab. 100:E96-E100(2015) [PubMed] [Europe PMC]

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