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Diabetes Care. 2014 Oct;37(10):2718-22. doi: 10.2337/dc14-0602. Epub 2014 Jul 14.

Increased circulating levels of betatrophin in newly diagnosed type 2 diabetic patients.

Author information

  • 1Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, China.
  • 2Department of Endocrinology, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital Affiliated Medical School, Shanghai Jiaotong University, Shanghai, China.
  • 3Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, China yuanguoyue@hotmail.com.

Abstract

OBJECTIVE:

Betatrophin, a newly identified hormone, has been recently characterized as a potent stimulator that increases the production and expansion of insulin-secreting β-cells in mice, but the physiological role of betatrophin remains poorly understood. This study measured for the first time serum betatrophin levels in newly diagnosed patients with type 2 diabetes (T2DM) and explored the correlations between its serum levels and various metabolic parameters in T2DM.

RESEARCH DESIGN AND METHODS:

We analyzed the concentrations of betatrophin by ELISA in blood samples of 166 well-characterized individuals in whom anthropometric parameters, oral glucose tolerance test (OGTT), glycosylated hemoglobin, blood lipids, insulin sensitivity (1/homeostasis model assesment of insulin resistance [1/HOMA-IR] and Matsuda index [ISIM]), and insulin secretion were measured. The participants were divided into newly diagnosed T2DM patients (n = 83) and age-, sex- and BMI-matched healthy control subjects (n = 83).

RESULTS:

Serum betatrophin levels were significantly higher in T2DM patients than in healthy control subjects (613.08 [422.19-813.08] vs. 296.57 [196.53-509.46] pg/mL; P < 0.01). Serum betatrophin positively correlated with age, 2-h post-OGTT glucose (2hPG), and postprandial serum insulin (PSI), but negatively with 1/HOMA-IR and ISIM in T2DM patients. In the control group, betatrophin was only positively associated with age. In T2DM subjects, multivariate regression analyses showed that age, 2hPG, and PSI were independent factors influencing serum betatrophin levels.

CONCLUSIONS:

Circulating concentrations of betatrophin are significantly increased in T2DM patients. Our results suggest that betatrophin may play a role in the pathogenesis of T2DM.

© 2014 by the American Diabetes Association. Readers may use this article as long as the work is properly cited, the use is educational and not for profit, and the work is not altered.

[PubMed - indexed for MEDLINE]
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