Abstract:
:Anti-α-galactoside antibody (anti-Gal) from human plasma that bound to α-galactoside-bearing guar galactomannan gel and was eluted with specific sugar (affinity-purified anti-Gal ; APAG) invariably contained apo(a) and apo B subunits in a proportion close to that in plasma lipoprotein(a) [Lp(a)]. Since LDL does not contain apo(a), result suggested Lp(a) as a component of APAG. Lp(a) in APAG was complexed with anti-Gal since plate-coated anti-apo(a) captured Lp(a) along with the antibody. Association of Lp(a) with anti-Gal in APAG was considerably lower in presence of anti-Gal-specific sugar, suggesting that Lp(a) occupied the sugar-binding site of anti-Gal. Content of Lp(a)-bound anti-Gal in APAG, though a minor fraction of total antibody, increased steadily with total Lp(a) content of plasma. Further, Lp(a) released from immune complex-rich fraction of plasma by anti-Gal- specific sugar was proportional to total plasma Lp(a). Anti-Gal titre decreased with increasing Lp(a) concentration among 114 plasma samples. Results indicate the potential of anti-Gal molecules with its binding site partially occupied by Lp(a) molecule(s) to a) use the remaining binding site(s) to recognize other macromolecules or cells and b) transport Lp(a) across Fc receptor-bearing cells.
journal_name
Immunol Investjournal_title
Immunological investigationsauthors
Mandagini G,Subramanian SP,Vasantha K,Appukuttan PSdoi
10.3109/08820139.2013.764316subject
Has Abstractpub_date
2013-01-01 00:00:00pages
324-40issue
4eissn
0882-0139issn
1532-4311journal_volume
42pub_type
杂志文章abstract::Previous work had implicated T cells within the stimulating population as having a significant role in the MLR. We now report that depletion of T cells from the stimulators caused a reduction in proliferative response in mixed leukocyte reaction (MLR) by 50% or more. This response could be restored by adding T-enriche...
journal_title:Immunological investigations
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journal_title:Immunological investigations
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journal_title:Immunological investigations
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journal_title:Immunological investigations
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journal_title:Immunological investigations
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