Yoshihiro Nakamura1, Hiroki Kobayashi1,2,3, Sho Tanaka1, Yoshinari Hatanaka1, Noboru Fukuda, Masanori Abe1. 1. Division of Nephrology, Hypertension and Endocrinology, Department of Internal Medicine, Nihon University School of Medicine, Tokyo, Japan. 2. Section on Genetics and Epidemiology, Research Division, Joslin Diabetes Center, Boston, MA, USA. 3. Department of Medicine, Harvard Medical School, Boston, MA, USA.
Abstract
OBJECTIVE: Although renal impairments are observed in patients with primary aldosteronism (PA), the association between plasma aldosterone concentration (PAC) and specific structural kidney damage remains unknown. Thus, we analysed the association between PAC, and markers of glomerular and tubular damage. DESIGN: This was a retrospective cross-sectional study of 96 PA patients, in which we analysed the association between PAC and markers of kidney damage, including urinary albumin-creatinine ratio (ACR) for glomerular damage, and urinary liver fatty acid-binding protein (L-FABP), N-acetyl-β-D-glucosaminidase (NAG) and β2-microglobulin (β2-MG) for tubular damage. In addition, we evaluated the association between PAC and N-terminal pro-brain natriuretic peptide (NT-proBNP) as a marker for body fluid volume. RESULTS: Urinary ACR, L-FABP, NAG, β2-MG and NT-proBNP significantly correlated with PAC. PAC (<415 pmol/L, 415-550, 550-740, 740 <)-based quartile analysis revealed that both elevated markers of kidney damage and NT-proBNP could be observed in PA patients with a PAC over 550 pmol/L. Logistic regression analysis showed that PAC was significantly associated with a risk of both microalbuminuria and lowered eGFR (<60 mL/min/1.73 m2 ), with its optimal cut-offs for predicting each, 558 and 594 pmol/L, respectively. CONCLUSIONS: Increased PAC, especially over 550 pmol/L, is associated with excessive damage to the tubule and glomerulus.
OBJECTIVE: Although renal impairments are observed in patients with primary aldosteronism (PA), the association between plasma aldosterone concentration (PAC) and specific structural kidney damage remains unknown. Thus, we analysed the association between PAC, and markers of glomerular and tubular damage. DESIGN: This was a retrospective cross-sectional study of 96 PA patients, in which we analysed the association between PAC and markers of kidney damage, including urinary albumin-creatinine ratio (ACR) for glomerular damage, and urinary liver fatty acid-binding protein (L-FABP), N-acetyl-β-D-glucosaminidase (NAG) and β2-microglobulin (β2-MG) for tubular damage. In addition, we evaluated the association between PAC and N-terminal pro-brain natriuretic peptide (NT-proBNP) as a marker for body fluid volume. RESULTS: Urinary ACR, L-FABP, NAG, β2-MG and NT-proBNP significantly correlated with PAC. PAC (<415 pmol/L, 415-550, 550-740, 740 <)-based quartile analysis revealed that both elevated markers of kidney damage and NT-proBNP could be observed in PA patients with a PAC over 550 pmol/L. Logistic regression analysis showed that PAC was significantly associated with a risk of both microalbuminuria and lowered eGFR (<60 mL/min/1.73 m2 ), with its optimal cut-offs for predicting each, 558 and 594 pmol/L, respectively. CONCLUSIONS: Increased PAC, especially over 550 pmol/L, is associated with excessive damage to the tubule and glomerulus.
Authors: Xiao Lin; Muhammad Hasnain Ehsan Ullah; Xiong Wu; Feng Xu; Su-Kang Shan; Li-Min Lei; Ling-Qing Yuan; Jun Liu Journal: Front Cardiovasc Med Date: 2022-02-02