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Heating Lyophilised Factor VIII Does Not Alter Its Recognition by Specific Antibodies
Author(s) -
Gilles J. G.,
Giambattista M.,
Laub R.,
SaintRemy J. M. R.
Publication year - 1997
Publication title -
vox sanguinis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.68
H-Index - 83
eISSN - 1423-0410
pISSN - 0042-9007
DOI - 10.1046/j.1423-0410.1997.7310016.x
Subject(s) - immunogenicity , monoclonal antibody , antibody , reactivity (psychology) , chemistry , monoclonal , denaturation (fissile materials) , immunology , microbiology and biotechnology , medicine , biology , pathology , nuclear chemistry , alternative medicine
Background and objectives: Alterations of factor VIII (FVIII) during preparation procedures can potentially affect its immunogenicity. One method evaluating such alterations could be by determining the reactivity of FVIII with specific antibodies. Materials and methods: Since heat treatment is currently used to reduce the risk of viral transmission, we evaluated the immunoreactivity of plasma‐derived FVIII before and after heating at different temperatures and for different periods. Freeze‐dried FVIII was used for these experiments as part of the validation procedure of a novel FVIII preparation. Results: Heating FVIII for up to 72 h at 80 °C does not alter its reactivity with specific rabbit antibodies or mouse monoclonal antibodies, although some loss of FVIII activity occurred after 72 h. After heating for 2 h at 100 °C, a procedure that reduced FVIII activity by about 50%, there were still no significant effects on FVIII reactivity with monoclonal antibodies. Conclusions: Freeze‐dried preparations of plasma‐derived FVIII seem to be resistant to heat‐induced structural denaturation.