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  • Title: Schistosomiasis-associated glomerulopathy: Clinical aspects, pathological characteristics, and renal outcomes
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    Author: Neves PDMM, Jorge LB, Cavalcante LB, Malheiros D, Woronik V, Dias CB.
    Journal: Clin Nephrol; 2020 May; 93(5):251-261. PubMed ID: 32228829.
    Abstract:
    BACKGROUND: In Brazil, schistosomiasis is caused only by Schistosoma mansoni, occurring in the northeastern and southeastern regions. Schistosomiasis primarily affects the liver and gastrointestinal tract, although the kidneys can also be affected, mainly in the form of glomerulopathies. Here, we describe the characteristics of patients with schistosomiasis-associated glomerulopathies, including treatment and renal outcomes. MATERIALS AND METHODS: This was a retrospective analysis of patients diagnosed with schistosomiasis-associated glomerulopathy between 2002 and 2017. Clinical, biochemical, and histopathological (kidney biopsy) data were evaluated. RESULTS: Of the 24 patients evaluated, 19 (79.1%) were male and 16 (66.4%) were White. The mean age was 38.58 ± 9.83 years. We observed the hepatosplenic form of schistosomiasis in 15 patients (68.1%), nephrotic-nephritic syndrome in 13 (54.1%), hematuria in 20 (83.3%), and hypertension in 18 (75.0%). Renal histology showed a predominance of membranoproliferative pattern (n = 17/70.8%). On immunofluorescence, 19 patients (82.6%) showed immunoglobulin M (IgM) expression, 10 (43.4%) showed IgM+IgG expression, and 1 (4.3%) showed a "full house" pattern. The median follow-up time was 59.70 months, by the end of which 9 patients (37.5%) had developed end-stage renal disease (ESRD). Baseline serum creatinine was higher among the patients who developed ESRD than among those who did not (1.99 ± 1.08 vs. 1.34 ± 0.46 mg/dL, p = 0.05). CONCLUSION: Our study is one of the rare clinical studies on schistosomiasis-associated glomerulopathy with a long follow-up and renal endpoints, showing that one third of our patients, independent of their histological form, progress to dialysis.
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