The Journal of Experimental Medicine
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Journal of Experimental Medicine, Vol 155, 1161-1171, Copyright © 1982 by Rockefeller University Press

ARTICLES

Antibodies to laminin in Chagas' disease

A Szarfman, VP Terranova, SI Rennard, JM Foidart, M de Fatima Lima, JI Scheinman and GR Martin

We have found that sera from humans with Chagas' disease and Rhesus monkeys infected with Trypanosoma cruzi contain IgM and IgG antibodies, which react with structures in a variety of connective tissues. These antibodies react with laminin but not with various other purified connective tissue components like collagen types I, III, IV, and V, fibronectin, heparan sulfate (BM-1) proteoglycan, or chondronectin. The tissue-reacting antibodies were isolated by absorption to a laminin- Sepharose column. The bound fraction contained all the tissue-reacting antibodies. These antibodies strongly stained trypomastigotes and amastigotes, but weakly stained epimastigotes. These studies show that sera from T. cruzi-infected primates contain antilaminin antibodies, which may be produced by those host in response to a laminin-like molecule present in the parasite.
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