| Autor: |
Uher, F, Dobronyi, I, Gergel, J |
| Jazyk: |
angličtina |
| Rok vydání: |
1981 |
| Předmět: |
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| Popis: |
The features and function of IgM-FcR of rat peritoneal macrophages were studied. Macrophages specifically bind and phagocytose ox red blood cells coated with rat IgM (EA-IgM) through a specific receptor. This receptor is trypsin sensitive and its activity requires Ca++ ions. Both sodium azide and low temperature (4 degrees) inhibit the bindings as well as ingestion of EA-IgM by macrophages, suggesting the metabolically dependent character of the interaction between EA-IgM and macrophages. Colchicine inhibits the binding of EA-IgM by macrophages. Similarly, the ingestion of EA-IgM was also inhibited when peritoneal exudate cells (PEC) were pre-treated with colchicine or vinblastine or cytochalasin B. It is suggested that cytoskeletal elements of macrophages play an important role both in the binding of EA-IgM to their receptors and in the subsequent internalization of the receptor-ligand complexes. Ingestion of soluble IgM antibodies containing immune complexes (IC) resulted in a release of beta-glucuronidase from macrophages. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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