Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2-4
pubmed:dateCreated
1999-6-10
pubmed:abstractText
We have uncovered a role for B-1-B-cell-produced IgM antibody, in the initiation of contact sensitivity (CS) in mice. CS and delayed-type hypersensitivity (DTH) involve recruitment of T cells to the tissues, to be activated by antigen-presenting cells (APC), and then make cytokines. Little is known about low recruitment is initiated. In CS, soon after immunization, the unique B-1 cell subset, responsible for the formation of most IgM, is activated to produce antigen (Ag)-specific IgM for export to tissues. IgM forms complexes with challenge Ag, activating the classical complement (C) pathway, generating C5a, to activate endothelium directly, or indirectly via C5a receptors (R) on mast cells and platelets, that release vasoactive amines (serotonin) and cytokines (TNF-alpha). These act together to induce vasodilatation, vascular permeability and expression of endothelial adhesion molecules to promote optimal T cell recruitment.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1018-2438
pubmed:author
pubmed:issnType
Print
pubmed:volume
118
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
145-9
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:articleTitle
A new paradigm of T cell allergy: requirement for the B-1 cell subset.
pubmed:affiliation
Section of Allergy and Clinical Immunology, Department of Medicine, Yale University School of Medicine, New Haven, CT, USA. Askenase.lab@qm.Yale.edu
pubmed:publicationType
Journal Article