Linked Life Data

2647191

Source:http://linkedlifedata.com/resource/pubmed/id/2647191

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1989-5-5
pubmed:abstractText
A better understanding of the mechanism(s) involved in graft-host-tolerance following allogeneic bone marrow transplantation is needed to develop new strategies to prevent graft-versus-host disease (GVHD). Based on previous studies, mainly in MHC-mismatched donor-recipient pairs, three hypotheses have been proposed: clonal deletion, active suppression and lack of adequate antigen-presenting cells. Our goal was to identify the mechanism(s) by which tolerance is achieved and maintained in radiation chimeras transplanted across minor histocompatibility barriers. Healthy (B6----LP) chimeras were obtained following injection of 10(7) C57BL/6 marrow cells to irradiated (9.5 Gy) LP hosts and used experimentally 100 days after chimerization. The tolerance state of (B6----LP) chimeras could not be abrogated after i.v. transfer of 5 x 10(7) donor-type spleen cells alone or with repeated i.p. injection of host-type antigen-presenting cells. No GVHD was observed when 10(7) marrow cells plus 5 x 10(7) spleen cells from (B6----LP) chimeras were injected to irradiated LP recipients. Chimera spleen cells suppressed GVHD when adoptively transferred to LP recipients of a C57BL/6 graft. These results suggest that in this model the presence of suppressor cells is both necessary and sufficient to maintain graft-host-tolerance.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0268-3369
pubmed:author
pubmed:issnType
Print
pubmed:volume
4
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
83-7
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1989
pubmed:articleTitle
The mechanism of graft-host-tolerance in murine radiation chimeras transplanted across minor histocompatibility barriers.
pubmed:affiliation
Bone Marrow Transplant Unit, Maisonneuve-Rosemont Hospital, Montreal, Canada.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't