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Association between Sodium Intake and Change in Uric Acid, Urine Albumin Excretion, and the Risk of Developing Hypertension.
MedLine Citation:
PMID:  22711274     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: In non-hypertensive individuals, a high sodium diet has little acute effect on blood pressure but, for unclear reasons, is associated with hypertension if consumed chronically. We hypothesized that a chronically high sodium intake would be associated with increases in biomarkers of endothelial dysfunction, specifically serum uric acid (SUA) and urine albumin excretion (UAE), and that high sodium intake would be associated with incident hypertension among those with higher SUA and UAE. METHODS AND RESULTS: We prospectively analyzed the associations between sodium intake and the change in SUA (N=4062) and UAE (N=4146) among participants of the PREVEND study who were not taking antihypertensive medications. We also examined the association of sodium intake with the incidence of hypertension (N=5556) among non-hypertensive participants. After adjusting for confounders, each 1 gram higher sodium intake was associated with a 1.2μmol/L increase in SUA ( p=0.01) and a 4.6mg/d increase in UAE (p<0.001). The relation between sodium intake and incident hypertension varied according to SUA and UAE. For each 1 gram higher sodium intake, the adjusted hazard ratio for developing hypertension was 0.98 (0.89-1.08) among those in the lowest tertile of SUA, and 1.09 (1.02-1.16) among those in the highest. Corresponding hazard ratios were 0.99 (0.93-1.06) among participants whose UAE was <10mg/d, and 1.18 (1.07-1.29) among those whose UAE was >15mg/d. CONCLUSIONS: Over time, higher sodium intake is associated with increases in SUA and UAE. Among individuals with higher SUA and urine UAE, a higher sodium intake is an independent risk factor for developing hypertension.
Authors:
John P Forman; Lieneke Scheven; Paul E de Jong; Stephan J L Bakker; Gary C Curhan; Ron T Gansevoort
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-6-18
Journal Detail:
Title:  Circulation     Volume:  -     ISSN:  1524-4539     ISO Abbreviation:  -     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-6-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0147763     Medline TA:  Circulation     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
1 Brigham and Women's Hospital & Harvard Medical School, Boston, MA;
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