Association between plasma proANP and hyperuricemia in Chinese Han women: a cross-sectional study

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Background:Association between pro-atrial natriuretic peptide (proANP) and hyperuricemia has not yet been investigated in population. This study aimed to examine the association in Chinese Han women.Methods:We measured plasma proANP, serum uric acid, and other traditional biomarkers in 1360 women older than 30 years residing in the Gusu district of Suzhou City. Association between plasma proANP and hyperuricemia was analyzed in women aged ≥45 years and those aged <45 years, respectively.Results:In women aged ≥45 years, the odds ratio (OR) [95% confidence interval (CI)] of hyperuricemia with high proANP (over the median) was 0.57 (0.34-0.97) compared to those with low proANP (p=0.040). After adjustment for age and other potential covariates, a high plasma proANP was associated with a decreased risk of hyperuricemia in women aged ≥45 years (OR 0.40; 95% CI, 0.19-0.84), when the highest and lowest categories were compared. In contrast, there was no association between plasma proANP and hyperuricemia in women aged <45 years. We did not observe a significant interaction between age and proANP (pinteraction=0.113). Sensitivity analyses further confirmed these age-specific findings.Conclusions:Plasma proANP was significantly and inversely associated with hyperuricemia in Chinese Han women aged ≥45 years. This study suggests that an increased plasma proANP should be a protective factor of hyperuricemia among middle-aged and old women.

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