title: Increased arterial wall stiffness in primary aldosteronism in comparison with essential hypertension.
abstract: BACKGROUND
  Aldosterone has been shown to substantially contribute to the accumulation of collagen fibers and growth factors in the arterial wall, which can increase wall stiffness. This study aimed at comparing arterial stiffness between patients with primary aldosteronism (PA), essential hypertension (EH), and normotensive controls using carotid-femoral pulse wave velocity (PWV) and central augmentation index (AI).
  
  
  METHODS
  Thirty-six patients with confirmed PA, 28 patients with EH, and 20 normotensive subjects were investigated by Sphygmocor applanation tonometer.
  
  
  RESULTS
  The office blood pressure (BP) at the time of the measurement (PA 167+/-34/92+/-12 mm Hg; EH 166+/-19/91+/-10 mm Hg), age, body mass index (BMI), cholesterol, triglyceride, blood glucose levels were comparable between PA and EH groups. The patients with PA had significantly higher PWV than the EH patients and control subjects (9.8+/-2.6 m/sec v 7.5+/-1.0 m/sec v 5.9+/-0.7 m/sec, respectively; all mutual differences P<.001). The difference in PWV between PA and EH remained statistically significant also after the adjustment for all clinical variables including 24-h BP using multivariate analysis (P=.001).
  
  
  CONCLUSIONS
  Arterial wall stiffness is independently increased in PA compared to EH. This could be caused by the deleterious effects of aldosterone excess (potentially modulated by hypernatremia) on the fibrosis and remodeling of the arterial wall.
authors.affiliation: 3rd Department of Internal Medicine, lst Medical School, Charles University and General University Hospital, Prague, Czech Republic. strauch@volny.cz
authors.forename: Branislav
authors.initials: B
authors.lastname: Strauch
authors.forename: Ondrej
authors.initials: O
authors.lastname: Petrák
authors.forename: Dan
authors.initials: D
authors.lastname: Wichterle
authors.forename: Tomás
authors.initials: T
authors.lastname: Zelinka
authors.forename: Robert
authors.initials: R
authors.lastname: Holaj
authors.forename: Jirí
authors.initials: J
authors.lastname: Widimský
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D001158:Arteries / Q000503:physiopathology*; D015415:Biomarkers / Q000097:blood; D001783:Blood Flow Velocity; D001794:Blood Pressure; D016022:Case-Control Studies; D005260:Female; D006339:Heart Rate; D006801:Humans; D006929:Hyperaldosteronism / Q000503:physiopathology*; D006973:Hypertension / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D011674:Pulse; D014655:Vascular Resistance
chemical_list: D015415:Biomarkers