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Dietary Sodium Modifies Serum Uric Acid Concentrations in Humans.

Abstract：

BACKGROUND:Subjects with hypertension are frequently obese or insulin resistant, both conditions in which hyperuricemia is common. Obese and insulin-resistant subjects are also known to have blood pressure that is more sensitive to changes in dietary sodium intake. Whether hyperuricemia is a resulting consequence, moderating or contributing factor to the development of hypertension has not been fully evaluated and very few studies have reported interactions between sodium intake and serum uric acid. METHODS:We performed further analysis of our randomized controlled clinical trials (Australian New Zealand Clinical Trials Registry #12609000161224 and #12609000292279) designed to assess the effects of modifying sodium intake on concentrations of serum markers, including uric acid. Uric acid and other variables (including blood pressure, renin, and aldosterone) were measured at baseline and 4 weeks following the commencement of low (60 mmol/day), moderate (150 mmol/day), and high (200-250 mmol/day) dietary sodium intake. RESULTS:The median aldosterone-to-renin ratio was 1.90 [pg/ml]/[pg/ml] (range 0.10-11.04). Serum uric acid fell significantly in both the moderate and high interventions compared to the low sodium intervention. This pattern of response occurred when all subjects were analyzed, and when normotensive or hypertensive subjects were analyzed alone. CONCLUSIONS:Although previously reported in hypertensive subjects, these data provide evidence in normotensive subjects of an interaction between dietary sodium intake and serum uric acid. As this interaction is present in the absence of hypertension, it is possible it could play a role in hypertension development, and will need to be considered in future trials of dietary sodium intake. CLINICAL TRIALS REGISTRATION:The trials were registered with the Australian and New Zealand Clinical Trials Registry as ACTRN12609000161224 and ACTRN1260.

journal_name

Am J Hypertens

journal_title

American journal of hypertension

authors

Todd AS,Walker RJ,MacGinley RJ,Kelly J,Merriman TR,Major TJ,Johnson RJ

doi

10.1093/ajh/hpx123

subject

Has Abstract

pub_date

2017-11-06 00:00:00

pages

1196-1202

issue

eissn

0895-7061

issn

1941-7225

pii

4107426

journal_volume

pub_type

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Dietary Sodium Modifies Serum Uric Acid Concentrations in Humans.