Key result
Serum betatrophin levels were significantly elevated in patients with newly diagnosed T2DM (798.6 pg/mL) compared to subjects with normal glucose tolerance (692.7 pg/mL, P<0.05).
Observational (n=438)
Absolute Event Rate: 798.6% vs 692.7%
p-value: p=<.05
Circulating betatrophin levels are elevated in newly diagnosed T2DM and correlate with insulin resistance, suggesting a potential role in metabolic regulation.
Elevated betatrophin in new T2DM should not change practice; cross-sectional data leave its causal role and biomarker utility open.
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.
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Chen et al. (2014) conducted an observational in Type 2 diabetes mellitus (n=438). Newly diagnosed T2DM vs. Normal glucose tolerance, isolated impaired fasting glucose, or isolated impaired glucose tolerance was evaluated on Serum betatrophin levels (pg/mL) (p=<.05). Serum betatrophin levels were significantly elevated in patients with newly diagnosed T2DM (798.6 pg/mL) compared to subjects with normal glucose tolerance (692.7 pg/mL, P<0.05).
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