Linked Life Data

9922397

Source:http://linkedlifedata.com/resource/pubmed/id/9922397

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1999-3-16
pubmed:abstractText
Recombinant Congenic Strains (RCS) are useful for dissecting complex polygenic traits. Here, we describe genetic and phenotypic characterization of six new RCS generated from outcrosses between NOD/Shi and CBA/LsLt, followed by sib mating of first backcross progeny (to CBA) for 20 generations, whereupon genetic and phenotypic analysis commenced. Four of the RCS were selected on the basis of residual heterozygosity present at F20 in one of the three original RCS. Contrary to expectations for RCS developed at first backcross, all derived at least 50% of the polymorphic markers typed from the NOD parental strain. Development of autoimmune insulin-dependent diabetes mellitus (IDDM) in NOD is a strain-specific characteristic. The major genetic component predisposing NOD mice to IDDM, their H2(g7) haplotype, was present in all RCS. Nevertheless, the presence of variable amounts of CBA genome at non-MHC loci conferred complete resistance in all RCS to spontaneous IDDM development, and rendered them strongly resistant to cyclophosphamide-induced IDDM. Although the RCS more resemble NOD in regard to certain strain-specific characteristics, such as prolificacy, an immunologic phenotype that was significantly reduced when compared to both parental strains was the number of peripheral CD8(+) T cells. Given the genetic characterization presented, these new RCS should prove valuable to investigators interested in studying genes controlling differential susceptibilities distinguishing the NOD and CBA inbred strain backgrounds.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0938-8990
pubmed:author
pubmed:issnType
Print
pubmed:volume
10
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
161-7
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Genotypic and phenotypic characterization of six new recombinant congenic strains derived from NOD/Shi and CBA/J genomes.
pubmed:affiliation
The Jackson Laboratory, Bar Harbor, Maine 04609-1500, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't