Abstract
High aldosterone levels contribute to kidney disease progression, while spironolactone in combination with ACEi or ARBs can potentially reduce proteinuria and ameliorate kidney function deterioration. However, evidence on the impact of eplerenone in patients with glomerulonephritis is scarce. In this prospective observational study, we assessed the effects of eplerenone in patients with biopsy-proven glomerulonephritis who were already treated with ACEi or ARBs. Patients received either eplerenone (25 mg daily) on top of ACEi or ARBs or standard treatment alone. Proteinuria (24 h total protein excretion), kidney function, blood pressure and serum K+ levels were assessed at 3, 6 and 12 months after the initiation of treatment. Sixty-six patients were included in the study. Eplerenone was administered in 30 patients, while 36 received only ACEi or ARB. Proteinuria decreased from 1768 to 1152 mg/24 h after 1 year of eplerenone treatment, while it remained stable in controls. Eplerenone showed significant impact on proteinuria in those with baseline proteinuria of >1000 mg/24 h. Patients who received eplerenone showed a reduction in systolic blood pressure, while eGFR and serum K+ levels remained stable. Addition of eplerenone has a beneficial effect on proteinuria in patients with glomerulonephritis and significant baseline proteinuria.
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