Linked Life Data

16344599

Source:http://linkedlifedata.com/resource/pubmed/id/16344599

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
11 Suppl
pubmed:dateCreated
2005-12-13
pubmed:abstractText
Toll-like receptors (TLR) recognize pathogen-derived molecules and induce downstream activation of inflammatory pathways. Fatty liver has been shown to result in increased sensitivity to lipopolysaccharide (LPS), a TLR4 ligand. In this study, we investigated the roles of TLR2 and TLR4 in liver damage and on cytokine induction in a methionine-choline deficient (MCD) diet-induced model of nonalcoholic steatohepatitis. We found that mice with nonalcoholic fatty liver had increased liver injury and inflammatory cytokine induction after challenge with a TLR4 but not with a TLR2 ligand. TLR2 deficient mice were not protected against the development of steatohepatitis after MCD diet feeding. On the contrary, TLR2 mice had significantly higher levels of serum ALT and greater TNF-alpha levels after LPS challenge suggesting increased liver injury. This was associated with reduced production of IL-6, a cytokine with hepatoprotective effects in fatty liver. Increased liver injury in the MCD diet-fed TLR2 mice was associated with reduced baseline and LPS-induced NF-kB and PPRE binding compared to MCS controls. These results demonstrate that TLR2 deficiency results in increased liver injury in association with nonalcoholic steatohepatitis and may suggest a protective role for TLR2-mediated signals in liver injury.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0145-6008
pubmed:author
pubmed:issnType
Print
pubmed:volume
29
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
140S-145S
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Modulation of non-alcoholic steatohepatitis by pattern recognition receptors in mice: the role of toll-like receptors 2 and 4.
pubmed:affiliation
Liver Center, Division of Gastroenterology, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA. gyongyi.szabo@umassmed.edu
pubmed:publicationType
Journal Article, Research Support, N.I.H., Extramural