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Mesangial IgG in childhood minimal change disease: clinical relevance
H Abu-Farsakh1, P L Berry, L L Hill
1Texas Children's Hospital, Houston 77030.
Abstract:
The clinical courses of five children with the nephrotic syndrome and renal biopsies diagnosed as minimal change disease (MCD) by light microscopy but with mesangial immune deposits of IgG (> or = 2+) and no dominant or codominant IgA were reviewed retrospectively to determine if the presence of significant mesangial deposits of IgG has prognostic implications and to evaluate the treatment these patients received. All five of the children were steroid dependent or resistant initially, and four received cyclosporine or cytotoxic agents later. After a mean follow-up period of 2.9 years for four and 20 years for one, all are in remission. All have normal renal function with no hypertension. These results suggest that the deposition of IgG in the mesangium of biopsies from patients with MCD by light microscopy may predict a more difficult course initially and may require more aggressive treatment to achieve permanent remission.
Insights
Children with minimal change disease (MCD) and IgG deposits may face initial treatment challenges. Aggressive therapies are often needed for remission, but long-term outcomes remain positive.
Area of Science:
- Pediatric Nephrology
- Renal Pathology
Background:
- Minimal change disease (MCD) is a common cause of nephrotic syndrome in children.
- Renal biopsy is crucial for diagnosing MCD, but subtle histological findings can impact prognosis.
Purpose of the Study:
- To investigate the prognostic implications of mesangial IgG deposits in pediatric MCD.
- To evaluate treatment strategies and outcomes in these patients.
Main Methods:
- Retrospective review of clinical courses and renal biopsies from five children with MCD.
- Analysis of light microscopy findings, mesangial IgG deposits, and treatment regimens.
Main Results:
- All five children initially presented with steroid-dependent or resistant nephrotic syndrome.
- Four patients required advanced immunosuppressive therapy (cyclosporine or cytotoxic agents).
- All patients achieved remission with normal renal function and no hypertension after follow-up.
Conclusions:
- Mesangial IgG deposits in MCD may indicate a more challenging initial clinical course.
- Aggressive treatment is often necessary to achieve sustained remission in these cases.
- Despite initial difficulties, long-term renal outcomes are favorable.