Xue Li1,2, Xing Meng2, Xiangchun Gao3, Xiuyu Pang2, Yanjiao Wang2, Xiaoyan Wu2, Xinrui Deng2, Qiao Zhang2, Changhao Sun4, Ying Li4. 1. Department of Epidemiology and Biostatistics, College of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China. 2. Department of Nutrition and Food Hygiene, College of Public Health, Harbin Medical University, Harbin, China. 3. Fourth Affiliated Hospital, Harbin Medical University, Harbin, China. 4. Department of Nutrition and Food Hygiene, College of Public Health, Harbin Medical University, Harbin, China liying_helen@163.com changhaosun2002@163.com.
Abstract
OBJECTIVE: We aimed to evaluate whether xanthine oxidase (XO), a key enzyme in uric acid (UA) metabolism and a major source of reactive oxygen species, plays a causal and important role in the development of type 2 diabetes mellitus (T2DM) in a large prospective cohort study. RESEARCH DESIGN AND METHODS: A total of 4,412 diabetes-free adults (2,071 women and 2,341 men) aged 30-65 years at baseline in 2008 were involved. Participants were followed for incident change of glucose metabolism during an average of 4.7 years. At baseline, serum XO and UA, serum lipids, and glucose homeostasis indexes including fasting blood glucose (FBG), 2-h blood glucose (PBG), glycosylated hemoglobin A1c (HbA1c), and fasting insulin were tested for analysis. RESULTS: During an average follow-up period of 4.7 years, 249 women and 360 men developed new-onset T2DM. Serum XO activity was positively associated with UA concentration (all P values <0.001). When XO activity and UA concentration were considered in the same model of the sex-specific analysis, only XO activity was significantly associated with the incidence of T2DM, with the hazard ratios from the bottom to the top quartile of XO activity being 1.00, 1.67 (95% CI 1.00-2.79), 1.86 (1.11-3.13), and 2.36 (1.43-3.90) in women and 1.00, 1.01 (0.68-1.52), 1.41 (0.98-2.03), and 1.90 (1.30-2.78) in men. CONCLUSIONS: Elevated serum XO activity, but not UA concentration, was associated with an increased risk of developing T2DM in women and men with mutual adjustment for XO and UA. Further studies are needed to examine the underlying mechanisms.
OBJECTIVE: We aimed to evaluate whether xanthine oxidase (XO), a key enzyme in uric acid (UA) metabolism and a major source of reactive oxygen species, plays a causal and important role in the development of type 2 diabetes mellitus (T2DM) in a large prospective cohort study. RESEARCH DESIGN AND METHODS: A total of 4,412 diabetes-free adults (2,071 women and 2,341 men) aged 30-65 years at baseline in 2008 were involved. Participants were followed for incident change of glucose metabolism during an average of 4.7 years. At baseline, serum XO and UA, serum lipids, and glucose homeostasis indexes including fasting blood glucose (FBG), 2-h blood glucose (PBG), glycosylated hemoglobin A1c (HbA1c), and fasting insulin were tested for analysis. RESULTS: During an average follow-up period of 4.7 years, 249 women and 360 men developed new-onset T2DM. Serum XO activity was positively associated with UA concentration (all P values <0.001). When XO activity and UA concentration were considered in the same model of the sex-specific analysis, only XO activity was significantly associated with the incidence of T2DM, with the hazard ratios from the bottom to the top quartile of XO activity being 1.00, 1.67 (95% CI 1.00-2.79), 1.86 (1.11-3.13), and 2.36 (1.43-3.90) in women and 1.00, 1.01 (0.68-1.52), 1.41 (0.98-2.03), and 1.90 (1.30-2.78) in men. CONCLUSIONS: Elevated serum XO activity, but not UA concentration, was associated with an increased risk of developing T2DM in women and men with mutual adjustment for XO and UA. Further studies are needed to examine the underlying mechanisms.
Authors: Alessandro Volpe; Chang Ye; Anthony J Hanley; Philip W Connelly; Bernard Zinman; Ravi Retnakaran Journal: J Clin Endocrinol Metab Date: 2020-03-01 Impact factor: 5.958
Authors: Anastasia Slobodnick; Michael Toprover; Jeffrey Greenberg; Daria B Crittenden; Virginia C Pike; Yingzhi Qian; Hua Zhong; Michael H Pillinger Journal: Medicine (Baltimore) Date: 2020-08-28 Impact factor: 1.817