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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1991-12-19
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pubmed:abstractText |
A hemophilic patient treated with Factor VIII (F.VIII) concentrates developed a F.VIII inhibitory activity. The patient's plasma showed 2 anti-F.VIII/von Willebrand Factor (vWF) antibodies (Abs) of the IgG and IgA class respectively. The specific anti-F.VIII/vWF Abs were isolated and resulted to be IgG (20 micrograms/ml) and IgA (35 micrograms/ml). The plasma was subsequently fractionated by Protein A-Sepharose and the IgG and IgA containing fractions were separately analyzed for anti-F.VIII activity. Both fractions exhibited F.VIII inhibitory activity, but that corresponding to the IgA was lower than expected. Regarding the possible existence of a non-inhibitor Ab in the IgA containing sample, plasma was processed through an immunoadsorbent to which a F.VIII devoid vWF preparation had been previously coupled and further fractionated by Protein A-Sepharose, obtaining 2 IgA fractions. One of them exhibited F.VIII inhibitory activity while the other, which reacted with the F.VIII devoid vWF preparation, did not. Therefore, this latter one was considered as a true anti-vWF Ab. The IgG and IgA inhibitors were polyclonal and the IgG one was composed of the 4 IgG subclasses.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Autoantibodies,
http://linkedlifedata.com/resource/pubmed/chemical/Factor VIII,
http://linkedlifedata.com/resource/pubmed/chemical/Immunoglobulin A,
http://linkedlifedata.com/resource/pubmed/chemical/Immunoglobulin G,
http://linkedlifedata.com/resource/pubmed/chemical/von Willebrand Factor
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pubmed:status |
MEDLINE
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pubmed:month |
Jul
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pubmed:issn |
0049-3848
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
1
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pubmed:volume |
63
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
73-84
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:1948824-Adult,
pubmed-meshheading:1948824-Autoantibodies,
pubmed-meshheading:1948824-Factor VIII,
pubmed-meshheading:1948824-Hemophilia A,
pubmed-meshheading:1948824-Humans,
pubmed-meshheading:1948824-Immunoglobulin A,
pubmed-meshheading:1948824-Immunoglobulin G,
pubmed-meshheading:1948824-Male,
pubmed-meshheading:1948824-von Willebrand Factor
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pubmed:year |
1991
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pubmed:articleTitle |
Detection of two different anti-factor VIII/von Willebrand factor antibodies of the IgA class in a hemophilic patient with a polyclonal factor VIII inhibitor of the IgG class.
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pubmed:affiliation |
Research Center, La Fe Hospital, Valencia, Spain.
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pubmed:publicationType |
Journal Article,
Case Reports,
Research Support, Non-U.S. Gov't
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