title: Serum aldosterone and its relationship to left ventricular structure and geometry in patients with preserved left ventricular ejection fraction.
abstract: OBJECTIVE
  Cardiac remodelling might be an important mechanism for aldosterone-mediated cardiovascular (CV) morbidity and mortality. Previous studies relating aldosterone to left ventricular (LV) structure however revealed conflicting results.
  
  
  RESULTS
  We aimed to evaluate the relationship of serum aldosterone concentration (SAC) and aldosterone-to-renin ratio (ARR) with echocardiographic parameters of LV remodelling in CV risk patients with preserved left ventricular ejection fraction (LVEF). We studied 1575 participants (54.1% female) with CV risk factors and LVEF >50% (61.7 ± 6.1%). Of the total, 94.7% of patients had no overt heart failure. All patients underwent measurement of SAC, ARR, and comprehensive echocardiographic analysis. Overall, multivariate adjusted analysis of covariance (ANCOVA) showed a significant increase in LV mass (P= 0.001), LV mass index (P= 0.001), relative wall thickness (P= 0.011), and LV posterior wall thickness (P< 0.001) with increasing SAC. This overall association of SAC and LV remodelling was driven by a statistic significant effect exclusively in women. In multivariate logistic regression analysis higher SAC levels were independently related to concentric LV hypertrophy [odds ratio (OR; with 95% CI) by comparing SAC levels in the third gender-specific tertile with the first tertile: 1.87; 95% CI: 1.31-2.68; P= 0.001]. Higher SAC levels were positively related to concentric LVH in either sex. We observed no significant associations between the ARR and echocardiographic parameters of LV remodelling.
  
  
  CONCLUSIONS
  Circulating aldosterone but not ARR levels are independently related to echocardiographic parameters of LV structure, particularly in women. Higher SAC however was related to concentric LVH in either sex. Our findings in a large CV risk cohort with preserved LVEF indicate aldosterone-mediated pro-hypertrophic effects as a potential pathway for structural alterations of the left ventricular myocardium.
authors.affiliation: Department of Cardiology and Pneumology, University of Goettingen, Germany. fedelmann@med.uni-goettingen.de
authors.forename: Frank
authors.initials: F
authors.lastname: Edelmann
authors.forename: Andreas
authors.initials: A
authors.lastname: Tomaschitz
authors.forename: Rolf
authors.initials: R
authors.lastname: Wachter
authors.forename: Götz
authors.initials: G
authors.lastname: Gelbrich
authors.forename: Manuela
authors.initials: M
authors.lastname: Knoke
authors.forename: Hans-Dirk
authors.initials: HD
authors.lastname: Düngen
authors.forename: Stefan
authors.initials: S
authors.lastname: Pilz
authors.forename: Lutz
authors.initials: L
authors.lastname: Binder
authors.forename: Raoul
authors.initials: R
authors.lastname: Stahrenberg
authors.forename: Albrecht
authors.initials: A
authors.lastname: Schmidt
authors.forename: Winfried
authors.initials: W
authors.lastname: März
authors.forename: Burkert
authors.initials: B
authors.lastname: Pieske
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000450:Aldosterone / Q000097:blood / Q000378:metabolism*; D000704:Analysis of Variance; D015331:Cohort Studies; D004452:Echocardiography; D005260:Female; D006801:Humans; D017379:Hypertrophy, Left Ventricular / Q000097:blood* / Q000473:pathology / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D009929:Organ Size; D012083:Renin / Q000378:metabolism*; D012737:Sex Factors; D013318:Stroke Volume / Q000502:physiology; D020257:Ventricular Remodeling / Q000502:physiology*
chemical_list: D000450:Aldosterone; D012083:Renin