Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1995-4-6
pubmed:abstractText
Lewis-to-F344 rat cardiac allografts develop chronic rejection and arteriosclerotic lesions rich in mononuclear cells (especially macrophages). This study was performed to determine whether cytokine pathways associated with macrophage activation are upregulated in hearts undergoing chronic rejection. Gene transcript levels for IFN-gamma, monocyte chemoattractant protein-1 (MCP-1), and IL-6 were measured with reverse-transcription PCR assays optimized for each gene. Gene products were confirmed by immunohistology. For all three genes, transcript levels in rat cardiac allografts increased significantly on day 7 and remained elevated on days 14 and 28 posttransplantation, as compared with naive hearts, paired host hearts, and syngrafts (P < 0.006). For the inducible genes IFN-gamma and MCP-1, high transcript levels in cardiac allografts were in contrast with low levels in host spleens. On the other hand, transcript levels for the basally expressed gene IL-6 were elevated in both organs. Immunostaining confirmed allograft-specific expression for all three cytokines and localized the gene products to infiltrating mononuclear cells in the interstitium and vasculature. The sustained expression of these cytokines in cardiac allografts undergoing chronic rejection supports the widely held hypothesis that the intimal changes associated with transplant arteriosclerosis are mediated by cellular activation and cytokine production.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0041-1337
pubmed:author
pubmed:issnType
Print
pubmed:day
27
pubmed:volume
59
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
572-8
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed-meshheading:7533347-Animals, pubmed-meshheading:7533347-Antigens, CD4, pubmed-meshheading:7533347-Antigens, CD8, pubmed-meshheading:7533347-Base Sequence, pubmed-meshheading:7533347-Chemotactic Factors, pubmed-meshheading:7533347-DNA, Complementary, pubmed-meshheading:7533347-Graft Rejection, pubmed-meshheading:7533347-Heart Transplantation, pubmed-meshheading:7533347-Interferon-gamma, pubmed-meshheading:7533347-Interleukin-6, pubmed-meshheading:7533347-Macrophage Activation, pubmed-meshheading:7533347-Molecular Sequence Data, pubmed-meshheading:7533347-Monocyte Chemoattractant Proteins, pubmed-meshheading:7533347-Myocardium, pubmed-meshheading:7533347-RNA, pubmed-meshheading:7533347-Rats, pubmed-meshheading:7533347-Rats, Inbred F344, pubmed-meshheading:7533347-Rats, Inbred Lew, pubmed-meshheading:7533347-Transplantation, Homologous
pubmed:year
1995
pubmed:articleTitle
Upregulation of cytokines associated with macrophage activation in the Lewis-to-F344 rat transplantation model of chronic cardiac rejection.
pubmed:affiliation
Harvard School of Public Health, Boston, Massachusetts.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't