Idiopathic membranous nephropathy in the elderly

Area of Science:

• Nephrology
• Internal Medicine
• Geriatrics

Background:

• Membranous nephropathy (MN) is a leading cause of nephrotic syndrome in adults.
• Management of MN in elderly patients (>65 years) presents unique challenges due to comorbidities and potential treatment toxicity.

Purpose of the Study:

• To evaluate the efficacy and safety of different treatment regimens for membranous nephropathy in elderly patients.
• To compare outcomes between patients treated with methylprednisolone and chlorambucil, corticosteroids alone, or no specific treatment.

Main Methods:

• Retrospective, non-randomized study of 41 elderly patients with MN.
• Patients were divided into three groups: no treatment (A), methylprednisolone/chlorambucil (B), and corticosteroids alone (C).
• Outcomes including remission of nephrotic syndrome, duration of remission, and renal function deterioration were assessed over a mean follow-up of 38-92 months.

Main Results:

• Group B (methylprednisolone/chlorambucil) showed significantly higher remission rates compared to groups A and C (P=0.035, P=0.010).
• Patients in group B experienced significantly longer periods without nephrotic syndrome (P=0.000 for both comparisons).
• Renal function deterioration was observed in some patients across all groups, with a notable increase in plasma creatinine in untreated patients over 5 years.

Conclusions:

• Combination therapy with methylprednisolone and chlorambucil appears to be the most effective treatment for inducing remission and maintaining remission in elderly patients with membranous nephropathy.
• Further prospective studies are warranted to confirm these findings and optimize treatment strategies for this population.