Rabbit Platelets do not Express Fc Receptors for IgG
作者:
SinhaR. K.,
SantosA. V.,
SmithJ. W.,
HorsewoodP.,
AndrewM.,
KeltonJ. G.,
期刊:
Platelets
(Taylor Available online 1992)
卷期:
Volume 3,
issue 1
页码: 35-39
ISSN:0953-7104
年代: 1992
DOI:10.3109/09537109209013166
出版商: Taylor&Francis
数据来源: Taylor
摘要:
Human platelets are activated by IgG immune complexes and undergo platelet aggregation and the release of granular contents. Recently, the receptor for IgG on human platelets has been identified and characterised. In contrast, it is not known if rabbit platelets carry Fc receptors. In this report we describe investigations to detect the presence of an Fc receptor on rabbit platelets. The Fc receptor was investigated using functional assays (platelet aggregation and14C-serotonin release), a direct binding assay, and an affinity precipitation assay. All of these methods gave consistently positive results using human platelets and consistently negative results using rabbit platelets, indicating that rabbit platelets do not carry Fc receptors. This inconsistency in the interactions of immune complexes with rabbit and human platelets indicates that rabbits are not ideal models for studying a number of human diseases that could be caused by immune complexes, including heparin-induced thrombocytopenia and certain immunological disorders such as systemic lupus erythematosus.
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