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  • Title: Comparison of serum vaspin levels and vaspin expression in adipose tissue and smooth muscle tissue in pregnant women with and without gestational diabetes.
    Author: Tang Y, Qiao P, Qu X, Bao Y, Li Y, Liao Y, Ying H.
    Journal: Clin Endocrinol (Oxf); 2017 Oct; 87(4):344-349. PubMed ID: 28636750.
    Abstract:
    OBJECTIVE: Vaspin is associated with metabolic parameters and insulin resistance. However, the expression of vaspin in visceral adipose tissue (VAT) in pregnant women with gestational diabetes mellitus (GDM) has not been fully explored, and the contribution of vaspin to the biological mechanisms underlying GDM remains unclear. This study aimed to compare circulating vaspin levels and its expression in different insulin target tissues including subcutaneous adipose tissue (SAT), VAT and smooth muscle tissue (SMT) in pregnant women with and without GDM. DESIGN: A total of 37 women with GDM (GDM group) and 37 normal pregnant women (control group) were selected. Fasting plasma glucose (FPG), fasting insulin (FINS) and serum vaspin levels were quantified at term, and homeostasis model of assessment2-insulin resistance (HOMA2-IR) values were calculated. RT-qPCR and Western blotting were used to measure mRNA and protein levels of vaspin in VAT, SAT and SMT of 15 GDM women and normal pregnant women. RESULTS: In the GDM group, serum vaspin concentrations were significantly higher than in the control group. Serum vaspin levels were positively correlated with HOMA2-IR in the GDM group but not in the control group. In the GDM group, vaspin mRNA and protein expression levels in SAT and VAT were both significantly higher than in controls, but no difference was found in SMT. Moreover, relative mRNA but not protein expression levels of vaspin in SAT were highest among the three tissues in both groups. CONCLUSIONS: Circulating vaspin levels and expression of vaspin in SAT and VAT were higher in GDM women than in normal pregnant women. However, the specific role of vaspin from SAT and VAT in the pathogenesis of GDM needs further study.
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