Treatment of vasculitic IgA nephropathy.

Abstract:

BACKGROUND:Patients with IgA nephropathy and histological vasculitic/crescentic lesions have a poor prognosis. We performed a retrospective study to assess whether treatment with steroids and immunosuppressants would preserve renal function by healing these lesions and thereby prevent progression to glomerular sclerosis and renal failure. METHODS:Sixteen patients with IgA nephropathy and a vasculitic/crescentic glomerulonephritis diagnosed by renal histology were treated with a reducing course of prednisolone (initial dose 60 mg/day). Six patients also received cyclophosphamide (2 mg/kg/day) for three months followed by azathioprine (100 mg/day) in five patients. Ten patients received azathioprine (100 mg/day) in addition to prednisolone. The median duration of treatment was 12 months (range 5-30 months). At the end of treatment each patient had a second renal biopsy. RESULTS:Following treatment there was a significant reduction in the proportion of glomeruli with acute vasculitic lesions from a median of 17.4% (range 4.8-57.5%) to 0 (range 0-15.8%) (p=0.001). There was an increase in the proportion of globally sclerosed glomeruli from a median of 13.4% (range 0-44.4%) to 21.5% (range 0-90%) after treatment but this did not significantly differ from baseline (p=0.24). The proportion of renal cortex with chronic tubular atrophy increased from 2.55% (0.4-57.7%) to 11.3% (0.3-61%) (p=0.09). The median duration of follow-up was 30 months (inter-quartile range 6-30 months). At both 12 and 24 months there was no significant increase in serum creatinine. Four patients, however, developed end-stage renal failure between 24 and 81 months. CONCLUSION:In this retrospective study we show that treatment with steroids and immunosuppressants leads to healing of vasculitic lesions and may thus arrest progression of glomerular scarring.

journal_name

J Nephrol

journal_title

Journal of nephrology

authors

Harper L,Ferreira MA,Howie AJ,Savage CO,Richards NT,Michael J,Adu D

subject

Has Abstract

pub_date

2000-09-01 00:00:00

pages

360-6

issue

5

eissn

1121-8428

issn

1724-6059

journal_volume

13

pub_type

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