Long-term Prognosis of IgA Nephroapthy / 대한신장학회잡지

BACKGROUND: IgA nephropathy (IgAN) is the most frequent primary glomerulonephritis in the world. Despite 20 years of research into this condition, much remains unknown about its pathogenesis and therapy. One major problem is that the prognostic evaluation and renal survival of IgAN is unreliable. METHODS: A retrospective study was performed to clarify the prognostic factors and the long-term renal survival rates of this disease. RESULTS: One hundred fifty-two patients with IgAN who followed-up at least 3 years after renal biopsy were included in this study. During a mean followed-up of 9.3 years after their renal biopsy (range:36-215 months), 33 of them (21.7%) had progressed to end-stage renal disease (ESRD). The actuarial renal survival rate was 97% at 5 years, and 85% at 10 years. Using univariate analysis, 5 risk factors for developing ESRD were identified:male sex, hypertension, heavy proteinuria, renal insufficiency at the time of biopsy, severe histopathologic findings such as subclass IV/V lesions by Haas' subclassification were associated with significant risk factors for developing ESRD. In multivariate regression analysis, only Haas' subclass IV/V lesions and renal insufficiency at the time of biopsy were the independent prognostic factors of IgAN. CONCLUSION: In conclusion, further long-term prospective study with larger number of patients would be necessary to assess the prognostic factors in IgAN.

A Case of Nail-Patella Syndrome Who Presented with Characteristic Electron Microscopic Findings / 대한신장학회잡지

Nail-patella syndrome is a relatively rare autosomal dominant disorder characterized by dysplastic nail, hypoplastic or absent patella, and dislocation of radial head and iliac horns. In addition, renal abnormalities have been reported. The usual clinical signs of the renal involvement are asymptomatic proteinuria, microscopic hematuria, and in some cases progression to end stage renal disease. We present the case of adult with nail-patella syndrome, who developed proteinuria. Electron microscopy revealed irregular thickening of the glomerular basement membrane with areas of rarefaction, giving rise to a pathognomonic "moth-eaten" appearance.

Primary Immunosuppression with Tacrolimus in Renal Transplantation: Single Center Experience / 대한이식학회지

PURPOSE: Tacrolimus (FK-506) represents a major advance in the prevention of rejection following solid organ transplantation. Previous clinical trials in Japan, Europe, and the US suggest that tacrolimus is an effective primary immunosuppressive agent in kidney transplantation. This prospective, non-randomized single center study was done to confirmed the efficacy of tacrolimus in kidney transplantation. METHODS: A total of 50 renal transplant recipients who followed-up at least one year after transplantation was included in this study. Thirty six cases (72%) recived triple drug therapy consists of tacrolimus, mycophenolate mofetil (MMF), and low dose steroid. RESULTS: The overall incidence of acute rejection was 10%, all episodes of rejection were treated effectively with steroid pulse therapy. The incidence of treatment failure was six percent. One and two year graft survival were 98% and 96%, respectively. Adverse effects of tacrolimus therapy included tremor of the hand (56%), diarrhea (34%), alopecia (26%), hyperkalemia (22%), nephrotoxicity (18%), post transplant diabetes mellitus (14%), hypertension (14%), and hypercholesterolemia (10%). However, the incidence of gum hypertrophy and hirsutism were 6% and 2%, respectively. CONCLUSION: This short-term study indicates that tacrolimus appears to provide safe and effective primary immunosuppression in kidney transplantation.