Linked Life Data

17277154

Source:http://linkedlifedata.com/resource/pubmed/id/17277154

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2007-2-5
pubmed:abstractText
CD44 is a transmembrane adhesion molecule and hemopoietic CD44 has an essential role in hyaluronan clearance and resolution of noninfectious lung injury. In this study, we examined the role of CD44 in acute pulmonary inflammation and in the regulation of LPS-TLR signaling. Following intratracheally LPS treatment, CD44(-/-) mice demonstrated an exaggerated inflammatory response characterized by increased inflammatory cell recruitment, elevated chemokine expression in bronchoalveolar lavage fluid, and a marked increase in NF-kappaB DNA-binding activity in lung tissue in vivo and in macrophages in vitro. Furthermore, CD44(-/-) mice were more susceptible to LPS-induced shock. Reconstitution of hemopoietic CD44 reversed the inflammatory phenotype. We further found that the induction of the negative regulators of TLR signaling IL-1R-associated kinase-M, Toll-interacting protein, and A20 by intratracheal LPS in vivo and in macrophages in vitro was significantly reduced in CD44(-/-) mice. Collectively, these data suggest CD44 plays a previously unrecognized role in preventing exaggerated inflammatory responses to LPS by promoting the expression of negative regulators of TLR-4 signaling.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0022-1767
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
178
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2469-75
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
CD44 is a negative regulator of acute pulmonary inflammation and lipopolysaccharide-TLR signaling in mouse macrophages.
pubmed:affiliation
Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Duke University School of Medicine, Durham, NC 27710, USA.
pubmed:publicationType
Journal Article, Research Support, N.I.H., Extramural