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A DIFFERENCE IN SURFACE PROTEINS OF FASCIOLA HEPATICA LARVAE FROM INTACT AND NUDE MICE
Author(s) -
Howard Russell J,
Chapman Colin B,
Mitchell Graham F
Publication year - 1980
Publication title -
australian journal of experimental biology and medical science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.999
H-Index - 104
eISSN - 1440-1711
pISSN - 0004-945X
DOI - 10.1038/icb.1980.20
Subject(s) - fasciola hepatica , microbiology and biotechnology , protease , biology , in vitro , proteolysis , hepatica , fasciola , polyacrylamide gel electrophoresis , antibody , lactoperoxidase , biochemistry , helminths , immunology , enzyme , peroxidase
Summary Larvae of the trematode, Fasciola hepatica , dissected from the livers of intact mice at 12 to 14 days of infection, bind anti‐immunoglobulins in vitro . This is not so for larvae harvested from the livers of infected hypothymic nude (nu/nu) mice. When attempts were made to confirm the presence of surface Ig using lactoperoxidase‐catalysed radioiodination and analysis by SDS‐polyacrylamide gel electrophoresis, proteolysis at the time of solubilization markedly affected the profiles obtained. Provided protease inhibitors were present during processing, a μ‐like Ig heavy chain and a μ‐like Ig heavy chain could be demonstrated on larvae from nu/+ mice but not on larvae from nu/nu mice.