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Opsonization of yeast by the plasma of Biomphalaria glabrata (Gastropoda): a strain‐specific, time‐dependent process
Author(s) -
FRYER SARAH E.,
BAYNE CHRISTOPHER J.
Publication year - 1989
Publication title -
parasite immunology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.795
H-Index - 75
eISSN - 1365-3024
pISSN - 0141-9838
DOI - 10.1111/j.1365-3024.1989.tb00665.x
Subject(s) - biomphalaria glabrata , antibody opsonization , opsonin , biology , phagocytosis , microbiology and biotechnology , planorbidae , yeast , schistosoma mansoni , incubation , immunology , gastropoda , zoology , helminths , pulmonata , schistosomiasis , biochemistry
Summary Phagocytosis of yeast by haemocytes of Biomphalaria glabrata , intermediate host of Schistosoma mansoni , is influenced strongly by host plasma components, although it can occur without involvement of such factors. Plasma from two strains of B. glabrata which are resistant to S. mansoni differs in its opsonic properties from the plasma of a susceptible strain. This may reflect the principles which determine compatibility or incompatibility in this host‐parasite system. Opsonization is a time‐dependent process: short periods of incubation in plasma from all strains reduces subsequent phagocytosis in the absence of plasma factors, whereas longer incubation in resistant strain plasma is markedly opsonic. Haemocytes from all strains examined are equally competent in their recognition of either native or opsonized yeast.