Abstract
Background: Several studies have shown that the over activation of complement factor B(CFB) was related to obesity, insulin resistance(IR) and type 2 diabetes mellitus. This study was to assess whether circulating complement factor Ba (CFBa) within 11 to 17 weeks of gestation is associated with subsequent gestational diabetes mellitus (GDM) or not.Methods: Biochemical parameters and blood samples were collected from 399 pregnant women within 11 to 17 weeks of gestation. At 24 to 28 weeks of pregnancy, all participants underwent 75-g oral glucose tolerance test (fasting for more than 8 hours before blood sampling) and were assigned to GDM group(n=80) and normal control group(n=319). Perinatal data were collected after delivery. A propensity score-matched (PSM) analysis was performed to reduce the impact of confounding factors on glucose metabolism during pregnancy between the two groups.Results: Two groups of 74 well-matched patients who maintained balance in terms of baseline characteristics. The levels of CFBa in pregnant women who later developed GDM were significantly higher than those in healthy pregnant women [0.4(0.1-0.8) vs. 0.2(0.2-0.3), P=0.031]. Logistic regression results confirmed that the level of CFBa was an independent influencing factor for the occurrence of GDM (OR=1.52, 95% CI: 1.25-1.85, P=0.000). Further grouping according to the quartile of CFBa level, it was found that the incidence of GDM in category 3 was markedly higher than that in the first and the second categories. Conclusions: High level of the CFBa within 11 to 17 weeks of gestation increased the risk of subsequent GDM, and maybe a biomarker for predicting GDM.
High Level of Complement Factor Ba Within 11 to 17 Weeks of Gestation Increases the Risk of Subsequent Gestational Diabetes: A Propensity Score-Matched Study
