title: Endothelial dysfunction in patients with primary aldosteronism: a biomarker of target organ damage.
abstract: Primary aldosteronism (PA) has been associated with increased target organ damage (TOD), most likely through mineralocorticoid receptor-dependent endothelial dysfunction, in comparison with essential hypertension (EH). The aim of this study was to evaluate the level of biomarkers of endothelial dysfunction in PA and the relationship with left ventricular hypertrophy (LVH) and microalbuminuria (MAU). A total of 50 PA patients and 51 patients with EH individually matched for age, sex, blood pressure and duration of hypertension participated in this study. Biomarkers of endothelial dysfunction, including von Willebrand factor (vWF), intercellular adhesion molecule 1 (ICAM-1) and oxidized low-density lipoprotein (ox-LDL), were measured. Plasma aldosterone concentration (PAC), MAU and echocardiography were also evaluated. In PA patients, vWF, ICAM-1, ox-LDL, LVH and MAU were all significantly higher than in EH patients (all P<0.05). Furthermore, LVH was positively correlated with PAC (P=0.002), vWF (P=0.013) and ox-LDL (P=0.020). MAU was positively correlated with PAC (P<0.001), vWF (P=0.013) and ICAM-1 (P=0.001). Multiple regression analysis indicated that vWF, ICAM-1 and PAC independently predicted MAU (all P<0.05). Likewise, PAC, vWF and ox-LDL were significant predictors of LVH (all P<0.05). Taken together, our results suggest that endothelial dysfunction may contribute to TOD in PA patients.
authors.affiliation: Department of Special Medical Treatment Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China.
authors.forename: G
authors.initials: G
authors.lastname: Liu
authors.affiliation: Guangdong Province Key Laboratory of Arrhythmia and Electrophysiology, Department of Cardiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.
authors.forename: G-S
authors.initials: GS
authors.lastname: Yin
authors.affiliation: Guangdong Province Key Laboratory of Arrhythmia and Electrophysiology, Department of Cardiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.
authors.forename: J-y
authors.initials: JY
authors.lastname: Tang
authors.affiliation: Guangdong Province Key Laboratory of Arrhythmia and Electrophysiology, Department of Cardiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.
authors.forename: D-J
authors.initials: DJ
authors.lastname: Ma
authors.affiliation: Department of Special Medical Treatment Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China.
authors.forename: J
authors.initials: J
authors.lastname: Ru
authors.affiliation: Department of Special Medical Treatment Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China.
authors.forename: X-H
authors.initials: XH
authors.lastname: Huang
mesh_terms: D000328:Adult; D000419:Albuminuria / Q000150:complications; D015415:Biomarkers / Q000097:blood*; D004452:Echocardiography; D004727:Endothelium / Q000503:physiopathology*; D005260:Female; D006801:Humans; D006929:Hyperaldosteronism / Q000503:physiopathology*; D006973:Hypertension / Q000503:physiopathology*; D018799:Intercellular Adhesion Molecule-1 / Q000097:blood*; D008077:Lipoproteins, LDL / Q000097:blood*; D008297:Male; D012044:Regression Analysis; D014841:von Willebrand Factor / Q000032:analysis*
chemical_list: D015415:Biomarkers; D008077:Lipoproteins, LDL; C099252:oxidized low density lipoprotein; D014841:von Willebrand Factor; D018799:Intercellular Adhesion Molecule-1