In this study 43 patients with idiopathic nephrotic syndrome were randomly distributed into 2 age- and sex-matched groups. The first group was given fluvastatin while the second was used as control. The cases in the 2 groups were evaluated clinically, biochemically (creatinine clearance, albumin, 24-hour proteinuria, and lipogram), neurologically, and histopathologically (examination of renal biopsies obtained basally and after 1 year of treatment with fluvastatin). In the fluvastatin-treated group but not in the control group, we observed a significant reduction in cholesterol, low-density lipoprotein, and triglyceride. Clinical and laboratory assessment showed satisfactory tolerance of the drug by the patients. Proteinuria, serum albumin and creatinine clearance values were significantly better in the statin-treated patients. There was no difference in glomerular sclerosis between the 2 groups while interstitial fibrosis and renal fat deposits were less in the statin-treated group. The reduction in renal fat deposits in the statin-treated group was highly significant, while that of interstitial fibrosis was not. We conclude that: (1) statin can be safely and effectively used in the treatment of dyslipidemia in patients with persistent idiopathic nephrotic syndrome; (2) control of dyslipidemia in nephrotic patients is associated with better control of proteinuria and creatinine clearance; (3) statin treatment may cause regression of renal fat deposits in patients with nephrotic syndrome, and (4) longer term studies are still required to study further possible beneficial effects on renal histology and disease progression.

In children with minimal change nephrotic syndrome (MCNS), the steroid dependent group constitutes an especially difficult case for management. Patients in this group are prone to serious steroid side effects. Additionally, alkylating agents commonly fail to maintain remission and expose patients to more side effects. Therapy with the immunostimulant drug levamisole may therefore be another option in the attempt to maintain remission with minimal side effects. We prospectively treated 20 of our steroid dependent primary MCNS patients with levamisole. All patients were children, with an age range of 3-15 years; 16 were boys and 4 were girls. Remission was firstly induced by steroids, then levamisole was added in a dose of 2.5 mg/kg body weight on alternate days for 6 months. During this period we attempted to withdraw steroids completely and maintain patients on levamisole alone. We followed up our patients for the occurrence of relapse and side effects during this period and for a further 6 months after stopping levamisole. In 11 out of 20 children (55%), we successfully stopped steroids for more than 2 weeks. At the end of the 6-month treatment period (i.e. after 4 months of steroid discontinuation), ten patients (50%) were maintaining remission on levamisole alone. At the end of the 12-month study period (i.e. after 6 months of levamisole discontinuation), five patients (25%) were still in remission without any treatment for the previous 6 months. No significant side effects were reported during levamisole therapy. None of the patients developed neutropenia, but the leukocyte count showed a significant reduction in those who responded to levamisole treatment. We concluded that levamisole therapy for 6 months is a safe and perhaps effective therapy in a subset of children with steroid dependent MCNS to enable an otherwise infeasible withdrawal of steroids. This may be worth a trial before other types of more hazardous adjunctive therapies are considered.

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We found that a 6-month course of pulse cyclophosphamide produced unfavourable effects in the majority of paediatric patients with steroid-dependent nephrotic syndrome.