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RESEARCH PRODUCT

Serum uric acid is not independently associated with plasma renin activity and plasma aldosterone in hypertensive adults

M. PanzicaGiuseppe MulèMassimiliano MorrealeL. GuarinoAntonella CastigliaClaudia CusumanoFrancesco VaccaroSantina CottoneGiulio GeraciD. Altieri

subject

MaleSettore MED/09 - Medicina InternaEndocrinology Diabetes and MetabolismMedicine (miscellaneous)030204 cardiovascular system & hematologyEssential hypertensionKidneyPlasma renin activityRenin-Angiotensin Systemchemistry.chemical_compound0302 clinical medicineRisk FactorsReninNutrition and Dietetic030212 general & internal medicineHyperuricemiaAldosteroneAdiposityNutrition and DieteticsAldosteroneAge FactorsMiddle AgedHypertensionBlood pressureFemaleCardiology and Cardiovascular MedicineAdultArterial hypertensionmedicine.medical_specialtyRenal functionHyperuricemiaEssential hypertension03 medical and health sciencesSex FactorsPlasma renin activityPlasma aldosteroneInternal medicinemedicineHumansSettore MED/14 - NefrologiaCreatinineChi-Square Distributionbusiness.industrymedicine.diseaseSettore MED/11 - Malattie Dell'Apparato CardiovascolareEndocrinologyCross-Sectional StudieschemistryMultivariate AnalysisLinear ModelsUric acidbusinessBody mass indexUric acidBiomarkers

description

Background and Aims In experimental investigations conducted in rats, raising serum uric acid (SUA) levels resulted in the stimulation of intrarenal renin expression. Studies in humans exploring the association of SUA with plasma renin activity (PRA) yielded conflicting results. Moreover, little is known about the relationship of SUA with plasma aldosterone concentration (PAC). The study aimed to assess the relationship between SUA levels, PRA, and PAC and the influence of age, gender, body mass index (BMI), and hyperuricemia on these relationships in subjects with essential hypertension (EH). Methods and Results We enrolled 372 hypertensive patients (mean age 45 ± 12 years, men 67%) with uncomplicated EH that was not pharmacologically treated. The study population was divided in tertiles according to SUA levels. While PRA did not differ significantly across the three tertiles, PAC was higher in subjects belonging to the uppermost tertile of SUA than those in the lower ones (p = 0.0429); however, this difference lost statistical significance after adjustment for age, sex, BMI, and serum creatinine. Univariate correlation analyses showed significant associations of SUA with PRA (r = 0.137; p = 0.008) and PAC (r = 0.179; p < 0.001). However, these relationships were not significant after correcting for confounding factors in multiple linear regression analyses. We did not observe statistically significant effect modification by gender, age, BMI, and hyperuricemia. Conclusion SUA levels are weakly associated with PRA and PAC in adults with untreated EH. These relationships were lost after adjustment for age, sex, BMI, and serum creatinine.

yearjournalcountryeditionlanguage
2017-04-01
10.1016/j.numecd.2016.12.008http://hdl.handle.net/10447/234154