Abstract：
:Guinea-pig erythrocytes that had been exposed to influenza A virus or Vibrio cholerae neuraminidase activated the classical complement pathway in autologous serum. Because all viral particles were eluted from the treated cells, activation was not dependent on anti-viral antibodies or on the particles themselves. After a threshold of 45-55% desialation, had been reached, the relative capacity of treated cells to activate complement increased very rapidly with desialation. Desialation unmasked sites on which natural auto-antibodies of the IgM class were fixed. Antibody fixation on the membrane led to C3b deposition on the cell membrane and activation of the classical complement sequence then cell lysis. The relevance of in vitro lysis of desialated cells to in vivo clearance of these cells is not certain because C4-deficient guinea-pigs were able to eliminate desialated cells from the blood stream as efficiently as did normal guinea-pigs. Nevertheless, membrane desialation occurring during myxovirus infection could lead to autoimmunity and tissue changes, as well as to recovery by eliminating virus-modified cells.
journal_name
Immunologyjournal_title
Immunologyauthors
Lambre CR,Thibon M,Le Maho S,Di Bella Gsubject
Has Abstractpub_date
1983-06-01 00:00:00pages
311-9issue
2eissn
0019-2805issn
1365-2567journal_volume
49pub_type
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