title: Renal function-dependent association of serum uric acid with metabolic syndrome and hepatic fat content in a middle-aged and elderly Chinese population.
abstract: The effect of uric acid (UA) on the pathogenesis of metabolic disorders is highly dependent on its physicochemical properties, and hyperuricaemia associated with different conditions may have different clinical meanings. The aim of the present study was to investigate the association of serum UA levels with metabolic syndrome and non-alcoholic fatty liver disease (NAFLD) in a middle-aged and elderly population with normal and impaired renal function. The cross-sectional study was performed on 1141 participants (426 men, 715 women; mean age 62 years) enrolled from the Shanghai Changfeng community. Each participant underwent a standard interview, with anthropometric and laboratory measurements. Hepatic fat content (HFC) was determined by a newly established quantitative ultrasound method. Univariate correlation analysis showed that serum UA was associated with all components of metabolic syndrome and HFC (r = 0.193, P < 0.001), especially in participants with a normal estimated glomerular filtration rate (eGFR; r = 0.255, P < 0.001). Logistic regression analysis demonstrated an independent association of serum UA with metabolic syndrome and NAFLD in participants with normal renal function, but not in those with eGFR < 90 mL/min per 1.73 m(2) . Furthermore, multivariate linear analysis showed that UA levels were independently associated with HFC (P = 0.003), but only in participants with normal eGFR. Elevated serum UA is independently associated with metabolic syndrome and NAFLD in patients with normal renal excretory function. However, in those with renal insufficiency, hyperuricaemia has no association with metabolic disorders.
authors.affiliation: Department of Endocrinology and Metabolism,  Zhongshan Hospital, Fudan University, Shanghai, China.
authors.forename: Ming-Feng
authors.initials: MF
authors.lastname: Xia
authors.forename: Huan-Dong
authors.initials: HD
authors.lastname: Lin
authors.forename: Xiao-Ming
authors.initials: XM
authors.lastname: Li
authors.forename: Hong-Mei
authors.initials: HM
authors.lastname: Yan
authors.forename: Hua
authors.initials: H
authors.lastname: Bian
authors.forename: Xin-Xia
authors.initials: XX
authors.lastname: Chang
authors.forename: Wan-Yuan
authors.initials: WY
authors.lastname: He
authors.forename: Johannes
authors.initials: J
authors.lastname: Jeekel
authors.forename: Albert
authors.initials: A
authors.lastname: Hofman
authors.forename: Xin
authors.initials: X
authors.lastname: Gao
mesh_terms: D000368:Aged; D044466:Asian People; D015331:Cohort Studies; D003430:Cross-Sectional Studies; D005234:Fatty Liver / Q000097:blood / Q000378:metabolism / Q000503:physiopathology; D005260:Female; D005919:Glomerular Filtration Rate / Q000502:physiology; D006801:Humans; D033461:Hyperuricemia / Q000097:blood / Q000378:metabolism / Q000503:physiopathology; D007668:Kidney / Q000503:physiopathology*; D008099:Liver / Q000378:metabolism*; D008297:Male; D024821:Metabolic Syndrome / Q000097:blood* / Q000378:metabolism / Q000503:physiopathology*; D008875:Middle Aged; D065626:Non-alcoholic Fatty Liver Disease; D011446:Prospective Studies; D014527:Uric Acid / Q000097:blood*
chemical_list: D014527:Uric Acid