Abstract：
:The allergenic cross-reactivity of cytochromes c isolated from Kentucky bluegrass (KBG) and ryegrass (RG) pollens was demonstrated by the finding that both cytochromes elicited PCA reactions of comparable titers in rats sensitized with murine reaginic antiserum to either KBG or RG cytochrome c. However, allergenic differences were revealed at limiting doses of the cytochromes c; under these conditions RG cytochrome c elicited PCA reactions only with the homologous reaginic serum, whereas KBG cytochrome c elicited PCA reactions with both murine reaginic sera. Moreover, in experiments involving inhibition of PCA, RG cytochrome c failed to neutralize some of the IgE antibodies of the antiserum to KBG cytochrome c, whereas KBG cytochrome c neutralized all IgE antibodies of both murine reaginic antisera. From these results it may be concluded that: (1) the two cytochromes c share common allergenic determinants, and (2) the KBG cytochrome c possesses additional allergenic determinant(s) not present on RG cytochrome c. The radioallergosorbent test, utilizing KBG cytochrome c discs and a pool of sera of individuals allergic to KBG, was inhibited to the extent of 87 or 41% by the addition of 10 micrograms of KBG or RG cytochrome c, respectively. By contrast both cytochromes c at 10 micrograms were equally effective in the inhibition (92%) of the binding of the IgE antibodies in this serum pool to RG cytochrome c allergosorbent discs. These experiments confirmed that the two cytochromes share common allergenic determinants.
journal_name
Mol Immunoljournal_title
Molecular immunologyauthors
Ekramoddoullah AK,Kisil FT,Sehon AHdoi
10.1016/0161-5890(82)90263-2subject
Has Abstractpub_date
1982-12-01 00:00:00pages
1527-34issue
12eissn
0161-5890issn
1872-9142journal_volume
19pub_type
杂志文章abstract：:Previous work on the cis-acting elements that control heavy chain variable region (VH) gene somatic hypermutation has indicated the presence of an as yet unidentified element(s) 3' of the intron enhancer that is necessary for high rate mutation. Examination of cis-acting elements involved in kappa light chain V gene h...
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更新日期：2006-04-01 00:00:00
