Linked Life Data

1860687

Source:http://linkedlifedata.com/resource/pubmed/id/1860687

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1991-8-30
pubmed:abstractText
Production of extracellular matrix proteins-in particular, the proteoglycans-by macrophages is important in many of their functions, including cell-cell recognition, adhesion and phagocytosis. In this study, we characterized changes in sulfated proteoglycan production by hepatic macrophages following in vivo activation with lipopolysaccharide. We found that both resident Kupffer cells and liver macrophages from lipopolysaccharide-treated rats incorporated [35S]sulfate into proteoglycans. Lipopolysaccharide-activated macrophages incorporated two to three times more of the label than did resident Kupffer cells. In addition, although both cell types produced chondroitin sulfate and heparan sulfate, resident Kupffer cells synthesized more chondroitin sulfate whereas lipopolysaccharide-activated cells produced more heparan sulfate. Using specific antibodies and flow cytometry, we also found that hepatic macrophages produced chondroitin-4-sulfate, chondroitin-6-sulfate and chondroitin-O-sulfate. Lipopolysaccharide-activated macrophages contained more chondroitin-4-sulfate and chondroitin-O-sulfate and less heparan sulfate than did resident Kupffer cells. Both tunicamycin and beta-D-xylosides, inhibitors of sulfated proteoglycan biosynthesis, were found to block phagocytosis by the cells. Taken together, these results suggest that sulfated proteoglycans are important in activation and functional responsiveness of liver macrophages.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0270-9139
pubmed:author
pubmed:issnType
Print
pubmed:volume
14
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
306-12
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
Changes in sulfated proteoglycan production after activation of rat liver macrophages.
pubmed:affiliation
Department of Environmental and Community Medicine, UMDNJ-Robert Wood Johnson Medical School, Piscataway 08854.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.