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H Y Kanamura

Publications and source records attributed to H Y Kanamura.

4 recordsLinked to original sources

Class specific antibodies and fluorescent staining patterns in acute and chronic forms of schistosomiasis mansoni.

Sera from 40 patients with acute (10) and chronic (30) forms of schistosomiasis mansoni were studied in order to correlate class specific circulating antibodies with fluorescent patterns developed in sections of both worms and liver granulomata. At the acute stage of the infection, IgA antibodies were present, IgM titers were high (about 10 times those found in the chronic stage), and IgG, IgM, IgA, and IgE antibodies were shown by focal fluorescent staining of worms and granulomata. At the chronic stage, IgA antibodies were absent and IgG antibodies showed mostly a diffuse staining pattern in both kinds of sections. The relevance of these observations to diagnosis in clinical cases or epidemiological surveys is discussed.

Animals

Human schistosomiasis: Schistosoma mansoni antigen detection in renal glomeruli.

Twelve kidney, five biopsy and seven necropsy specimens, all from schistosomiasis mansoni patients were studied by light and immunoflurescent microscopy in an attempt to detect antigen in the glomerular walls. Deposits of IgM, IgG,I gA, IgE, complement C3 and fibrinogen were observered in most cases. Antigen was successfully detected in two cases(one biopsy and one necropsy specimen), both exhibiting proliferative glomerulonephritis. The only clinical manifestation was a slight proteinuria. IgG antibodies eluted from the sutopsy kidney homogenates showed specific binding mostly to Schistosoma mansoni gut, thus spggesting that the fixed antibodies (eluates) are, at least partially, consituted by antibodies similar to the anti-circulating antigen. These data reinfroce the hypothesis that renal injury in schistosomiasis is mediated through an immune complex disease.

Adolescent