Vanadium (V) has been reported to inhibit a number of enzyme activities such as those of Na+-K+-ATPase. The main excretory pathway of this element is via the kidney. These facts led us to study the V distribution in uremic patients. As a result, hemodialysis patients at our dialysis center exhibited extremely high levels of serum V (23.9 ± 11.3 ng/ml, n = 43) as compared with healthy adults. Nondialysis patients did not show increased serum V concentrations. The V contents were significantly elevated in the skin and in the aortae of hemodialysis patients. It was found that the tap water from Kanagawa Prefecture, Japan, had the highest V concentrations among the 21 cities in Japan and the US. In conclusion, oral ingestion of V-contaminated water has likely caused an accumulation of the metal in patients with end-stage renal failure.
Os Autores descrevem um caso de paracoccidioidomicose em Tóquio, o segundo observado no Japão. A paciente residiu cerca de cinco anos na zona urbana de São Paulo, onde provavelmente adquiriu a primo-infecção. Não tomou corticóides, nem teve história de outras afecções que justificassem a paracoccidioidomicose. Após três anos do retorno ao Japão apresentou linfadenopatia, comprometimento hepatesplênico e ausência de lesões pulmonares. O presente caso, com exame histopatoló-gico e cultivo positivos para Paracoccidioides brasiliensis também apresentou quadro soroló-gico compatível. O aspecto blástico das lesões ósseas, raro em arcos costáis nesta micose, bem como a linfadenopatia generalizada são discutidos. Tratamento à base de anfotericina B e ketoconazol ofereceu resultados favoráveis. Neste trabalho os Autores discutem o problema de "patologia de importação", com suas implicações.
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