Association of retinol binding protein 4 and transthyretin with triglyceride levels and insulin resistance in rural thais with high type 2 diabetes risk

作者：Kwanbunjan Karunee^*; Panprathip Pornpimol; Phosat Chanchira; Chumpathat Noppanath; Wechjakwen Naruemon; Puduang Somchai; Auyyuenyong Ratchada; Henkel Ina; Schweigert Florian J

来源：BMC Endocrine Disorders, 2018, 18(1): 26.

DOI：10.1186/s12902-018-0254-2

• RBP4
• TTR
• HOMA-IR
• Hypertriglyceridemia
• Type 2 diabetes

Background: Retinol binding protein 4 (RBP4), a protein secreted by adipocytes and bound in plasma to transthyretin (TTR), has been associated with obesity, the early phase of insulin resistance, metabolic syndrome, and type 2 diabetes mellitus. The objective of this study was to elucidate the relationship between RBP4, TTR, triglyceride (TG) and type 2 diabetes risk in rural Thailand.
Methods: We measured the serum RBP4, TTR, glucose, triglyceride and insulin levels, and glucose tolerance of 167 volunteers from Sung Noen District, Nakhon Ratchasima Province, Thailand. Student's t-test, Pearson's correlation and logistic regression analysis were used to evaluate the relationships between RBP4, TTR and type 2 diabetes markers.
Results: RBP4 and TTR levels, as well as homeostatic model assessment of insulin resistance (HOMA-IR) values, were significantly elevated among subjects with high triglyceride levels (p < 0.01, p < 0.05, p < 0.05, respectively). Triglyceride levels correlated with RBP4 (r = 0.34, p < 0.001) and TTR (r= 0.26, p < 0.01) levels, as well as HOMA-IR values (r= 0.16, p < 0.05). After adjustment for age and gender, the risk of hypertriglyceridemia was 3.7 times greater (95% Cl =1.42 -9.73, p = 0.008) in the highest RBP4 tertile as compared to the lowest tertile. Similarly, the highest TTR and HOMA-IR tertiles had greater risk of hypertriglyceridemia at 3.5 (95% Cl = 1.30-9.20, p = 0.01) and 3.6 (95% CI = 1.33- 9.58, p = 0.01) times higher than the respective lowest tertiles. The correlation between TTR and blood glucose was statistically significant (r 0.18, p < 0.05), but not found this relationship in RBP4.
Conclusions: The associations of RBP4 and TTR with hypertriglyceridemia and insulin resistance may have important implications for the risk of heart disease and stroke.

• 出版日期2018-5-10