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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
4
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pubmed:dateCreated |
1985-11-21
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pubmed:abstractText |
The flare-up reaction of old patch test sites following oral intake of antigen have been shown to be site and antigen specific reactions. Using enzyme and immunohistochemistry, the morphology of 6- to 8-week-old patch test sites, before and after oral challenge with nickel, was investigated. Before oral challenge, small scattered perivascular cell infiltrates consisting of macrophages, mast cells, T-lymphocytes, and OKT6+ dendritic cells were found in old patch test sites. In early and strong flare-up reactions combined with systemic toxicoderma-like reactions, polymorphonuclear leukocytes and lysed granular fragments from these cells were prominent. In slower flare-up reactions with little systemic involvement, T-lymphocytes predominated. We conclude that cells, probably macrophages, which are able to secrete inflammatory mediators promoting chemotaxis for polymorphonuclear leukocytes and/or T-lymphocyte proliferation, may play an important role in initiation of the flare-up reaction.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:issn |
0001-5555
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
65
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
298-304
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pubmed:dateRevised |
2004-11-17
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pubmed:meshHeading |
pubmed-meshheading:2413683-Administration, Oral,
pubmed-meshheading:2413683-Adult,
pubmed-meshheading:2413683-Aged,
pubmed-meshheading:2413683-Allergens,
pubmed-meshheading:2413683-Dermatitis, Contact,
pubmed-meshheading:2413683-Female,
pubmed-meshheading:2413683-Humans,
pubmed-meshheading:2413683-Langerhans Cells,
pubmed-meshheading:2413683-Macrophages,
pubmed-meshheading:2413683-Male,
pubmed-meshheading:2413683-Mast Cells,
pubmed-meshheading:2413683-Middle Aged,
pubmed-meshheading:2413683-Nickel,
pubmed-meshheading:2413683-Patch Tests,
pubmed-meshheading:2413683-Skin Tests,
pubmed-meshheading:2413683-T-Lymphocytes
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pubmed:year |
1985
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pubmed:articleTitle |
Pathogenesis of orally induced flare-up reactions at old patch sites in nickel allergy.
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pubmed:publicationType |
Journal Article
|