1201-P: Circulating C1q/TNF-Related Protein 6 (CTRP6) and CTRP9 as Potential Biomarkers for Early Gestational Diabetes Mellitus Free

Background: The growing evidence has been verified that C1q/TNF-related protein 6 (CTRP6) and CTRP9, secreted by adipose tissue, can regulate glucose and lipid metabolism. However, the effect of CTRP6 and CTRP9 in gestational diabetes mellitus (GDM) is scarcely known. This study aimed to evaluate the potential clinical value of CTRP6 and CTRP9 in GDM.

Methods: A total of 35 GDM subjects and 37 healthy controls, between 24 and 28 weeks of gestation, were included in the study. Diagnosis of GDM was made according to American Diabetes Association criteria. Enzyme-linked immunosorbent assay (ELISA) was used to measure the levels of CTRP6 and CTRP9. Fasting insulin (FINS), IL-6, and TNF-α were detected by Luminex-xMAP technology. The main clinical characteristics, such as Anthropological data and metabolic parameters, were also obtained.

Results: Circulating CTRP6, CTRP9, IL-6 and TNF-α were significantly elevated in GDM subjects compared with controls. Pearson correlation analysis showed that CTRP6 and CTRP9 were positively correlated with FPG (r = 0.280, P = 0.017 and r = 0.559, P < 0.001, respectively) and HOMA-IR (r = 0.250, P = 0.035 and r = 0.382, P = 0.001, respectively). Moreover, CTRP9 was also positively correlated with FINS (r = 0.253, P = 0.032), IL-6 (r = 0.283, P = 0.016) and TNF-α (r = 0.266, P = 0.024). The area under the receiver operating characteristic curve (AUC-ROC) indicated that the combination of CTRP6 and CTRP9 was more effective in predicting GDM than single indicators.

Conclusion: Elevated CTRP6 and CTRP9 in GDM patients may be related to insulin resistance. And inflammatory factors may mediate the role of CTRP9 in insulin resistance. In addition, CTRP6 and CTRP9 may serve as candidate predictors in patients with early GDM.