Abstract:Objective To investigate the relationship of both FGF21 and insulin resistance (IR) with serum uric acid (SUA) by measuring the changes of serum fibroblast growth factor21 (FGF21) and insulin resistance index (HOMA-IR) in postmenopausal women with hyperuricemia (HUA). Methods Totally 76 female patients with HUA were included in the HUA group and divided into high BMI group (n = 35) and normal BMI group (n = 41) according to body mass index(BMI) level. 80 healthy women were included in the control group. FGF21, SUA, HOMA-IR, fasting blood-glucose (FPG), Fasting insulin (FIns), blood lipids, blood pressure and other indicators were detected in HUA group and control group, respectively. Results BMI, Scr, SUA, TG, FGF21, FIns and HOMA-IR in HUA group were higher than those in control group. SUA, FGF21, FIns and HOMA-IR in high BMI group were higher than those in normal BMI group. FGF21 was positively correlated with BMI (r = 0.803) and TG (r = 0.472), FPG (r = 0.184), lnFIns (r = 0.747) (P < 0.05); there was a positive correlation between ln (HOMA-IR) and BMI (r = 0.616), TG (r = 0.452), FPG (r = 0.529), lnFIns (r = 0.644) (P < 0.05); there was a positive correlation between FGF21 and ln (HOMA-IR) (r = 0.752, P < 0.05), SUA and ln (HOMA-IR) (r = 0.537, P < 0.05), SUA and FGF21 (r = 0.573, P < 0.05), respectively. The area under the ROC curve of FGF21 and ln (HOMA-IR) were 0.850 and 0.914, respectively, both of which were greater than 0.5, and the difference was statistically significant (P < 0.05). Conclusion In menopausal women with HUA, IR significantly increases and is accompanied by an increase in the level of FGF21, which suggests that the level of FGF21 is associated with IR and HUA closely, and FGF21 may be involved in the pathophysiological process of HUA caused by IR and predicts the occurrence of HUA.