Familial and phenotypic associations of the aldosterone renin ratio

S. Alvarez-Madrazo, S. Padmanabhan, B.M. Mayosi, H. Watkins, P. Avery, A.M. Wallace, R. Fraser, E. Davies, B. Keavney (Lead / Corresponding author), J. M. Connell

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    39 Citations (Scopus)

    Abstract

    Context: The aldosterone to renin ratio (ARR) is a marker of aldosterone excess, widely used to screen for primary aldosteronism (PA). The significance of a raised ARR in normotensive and hypertensive subjects and the phenotypic and familial factors affecting it are unclear. Objective: We estimated the distribution and heritability of the ARR and tested for associations between ARR and blood pressure (BP) with 11 polymorphisms at the CYP11B1/CYP11B2 locus. Design and Setting: A total of 1172 individuals from 248 Caucasian families ascertained via a hypertensive proband were evaluated. Main Outcome Measure: Plasma aldosterone was measured by RIA, and plasma renin concentration was measured by the LIAISON Direct Renin chemiluminescent immunoassay. Results: Unadjusted and adjusted ARR were continuously distributed in normotensives and hypertensives, with no evidence of a cutoff that would identify a separate population with PA. Median ARR was 4.19 ng/liter per mIU/liter (range, 0.04-253.16). ARR levels were higher in females and associated with age, body mass index, and potassium. Antihypertensive agents had significant predictable effects on the ARR. Renin was negatively associated, and ARR was positively associated with ambulatory BP readings (P < 0.001) in subjects not taking antihypertensives. The heritability of the ARR was 38.1% (P < 10 -8). Plasma aldosterone, but not ARR, was influenced by the intron 2 conversion variation in the CYP11B2 gene (ß = -0.07; P = 0.04). Conclusions: The ARR is continuously distributed, is influenced by genetic and environmental factors, and is not a marker of a distinct pathological abnormality but possibly reflects the long-term influence of aldosterone on cardiovascular homeostasis. Copyright © 2009 by The Endocrine Society.
    Original languageEnglish
    Pages (from-to)4324-4333
    Number of pages10
    JournalJournal of Clinical Endocrinology & Metabolism
    Volume94
    Issue number11
    DOIs
    Publication statusPublished - 2009

    Keywords

    • aldosterone
    • aldosterone synthase
    • antihypertensive agent
    • beta adrenergic receptor blocking agent
    • calcium antagonist
    • dipeptidyl carboxypeptidase inhibitor
    • diuretic agent
    • marker
    • potassium
    • renin
    • steroid 11beta monooxygenase
    • adult
    • aldosterone blood level
    • article
    • blood pressure
    • blood pressure monitoring
    • body mass
    • Caucasian
    • chemoluminescence
    • environmental factor
    • family
    • female
    • gene locus
    • genetic association
    • genetic variability
    • heredity
    • heritability
    • homeostasis
    • human
    • hypertension
    • immunoassay
    • intron
    • major clinical study
    • male
    • phenotype
    • plasma renin activity
    • population
    • priority journal
    • single nucleotide polymorphism
    • Adult
    • Aldosterone
    • Blood Pressure
    • Body Mass Index
    • Circadian Rhythm
    • European Continental Ancestry Group
    • Family
    • Female
    • Genotype
    • Humans
    • Hypertension
    • Male
    • Middle Aged
    • Phenotype
    • Renin

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