title: Plasma uric acid and hypertension in a Chinese community: prospective study and metaanalysis.
abstract: BACKGROUND
  Hyperuricemia has been positively associated with hypertension, but whether this association is independent of adiposity and other cardiovascular risk factors remains a matter of debate.
  
  
  METHODS
  We conducted a community-based prospective cohort study comprising 7220 participants (mean age 37 years; 73.8% men) in the Qingdao Port Health and Nutrition Examination Survey in China, who were free from hypertension at study entry in 1999-2000. During 4-year follow-up, 1370 men (19.0%) and 208 women (11.0%) had developed hypertension.
  
  
  RESULTS
  After adjustment for age, body mass index, and other covariates, the relative risks (RRs) of developing hypertension comparing the highest and lowest uric acid quartiles were 1.55 (95% CI 1.10-2.19; P for trend <0.001) for men and 1.91 (1.12-3.25; P for trend <0.001) for women. After additional adjustment for abdominal obesity, the RRs comparing the participants in the highest and lowest quartiles of uric acid were 1.39 (1.16-1.68; P for trend 0.003) for men and 1.85 (1.06-3.24; P for trend 0.006) for women. In joint analysis, compared with those in the lowest uric acid quartile and without abdominal obesity, participants who were in the highest quartile and also had abdominal obesity had a 3.0- and 3.4-fold greater risk of incident hypertension (1.56-3.97 for men and 2.10-3.81 for women, respectively).
  
  
  CONCLUSIONS
  These data suggest a positive association between plasma uric acid and incidence of hypertension during short-term follow-up in a Chinese population. The association between hyperuricemia and hypertension was partly mediated by abdominal obesity.
authors.affiliation: The Key Laboratory for Clinical Cardiovascular Genetics, Cardiovascular Institute and FuWai Hospital, Peking Union Medical College, Beijing 100037, China.
authors.forename: Weili
authors.initials: W
authors.lastname: Zhang
authors.forename: Kai
authors.initials: K
authors.lastname: Sun
authors.forename: Ying
authors.initials: Y
authors.lastname: Yang
authors.forename: Hongye
authors.initials: H
authors.lastname: Zhang
authors.forename: Frank B
authors.initials: FB
authors.lastname: Hu
authors.forename: Rutai
authors.initials: R
authors.lastname: Hui
mesh_terms: D000328:Adult; D001794:Blood Pressure; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D006973:Hypertension / Q000453:epidemiology / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000150:complications; D011446:Prospective Studies; D012307:Risk Factors; D014527:Uric Acid / Q000097:blood*
chemical_list: D014527:Uric Acid