RGD Reference Report - Genetic susceptibility to experimental autoimmune glomerulonephritis in the Wistar Kyoto rat. - Rat Genome Database

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Genetic susceptibility to experimental autoimmune glomerulonephritis in the Wistar Kyoto rat.

Authors: Reynolds, J  Cook, PR  Behmoaras, J  Smith, J  Bhangal, G  Tadros, S  Tee, J  Salama, AD  Evans, DJ  Aitman, TJ  Cook, HT  Pusey, CD 
Citation: Reynolds J, etal., Am J Pathol. 2012 May;180(5):1843-51. doi: 10.1016/j.ajpath.2012.01.029. Epub 2012 Mar 22.
RGD ID: 7207870
Pubmed: PMID:22445570   (View Abstract at PubMed)
PMCID: PMC3532591   (View Article at PubMed Central)
DOI: DOI:10.1016/j.ajpath.2012.01.029   (Journal Full-text)

In experimental autoimmune glomerulonephritis (EAG), a model of Goodpasture's disease, Wistar Kyoto (WKY) rats immunized with collagenase-solubilized glomerular basement membrane (GBM) or the recombinant NC1 domain of the alpha3 chain of type IV collagen [alpha3(IV)NC1] develop anti-GBM antibodies and focal necrotizing glomerulonephritis with crescent formation. However, Lewis (LEW) rats, which share the same major histocompatibility complex (MHC) haplotype, are resistant to EAG development. A genome-wide linkage analysis of backcrossed animals with EAG revealed a major quantitative trait locus (QTL) on rat chromosome 13 (LOD = 3.9) linked to the percentage of glomerular crescents. To investigate the role of this QTL in EAG induction, reciprocal congenic rats were generated (LEW.WCrgn1 congenic and WKY.LCrgn1 congenic), immunized with recombinant rat alpha3(IV)NC1, and assessed for EAG development. WKY.LCrgn1 rats showed a marked reduction in albuminuria, severity of crescentic nephritis, and number of glomerular macrophages compared with WKY controls. No reduction in antibody levels was observed. However, LEW.WCrgn1 rats were resistant to EAG development, as were LEW controls. Macrophage activation in vitro was assessed in parental and congenic rat bone marrow-derived macrophages (BMDMs). WKY.LCrgn1 BMDMs showed a significant reduction in Fc receptor-mediated oxidative burst, phagocytosis of opsonised polystyrene beads, and LPS-induced levels of MCP-1 secretion and iNOS mRNA expression compared with WKY rats. These results confirm the importance of Crgn1 on chromosome 13 in EAG susceptibility, mediated partly through differences in Fc receptor-mediated macrophage activation.



RGD Manual Disease Annotations    Click to see Annotation Detail View

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
Glom27Ratanti-basement membrane glomerulonephritis  IAGP  RGD 
Glom27Ratcrescentic glomerulonephritis  IAGP  RGD 
WKY.LEW-(D13Arb15-D13Rat58)/TjaRatcrescentic glomerulonephritis  IAGP  RGD 

Phenotype Annotations    Click to see Annotation Detail View

Mammalian Phenotype

Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
Glom27Ratglomerulonephritis  IAGP  RGD 
Objects Annotated

QTLs
Glom27  (Glomerulus QTL 27)

Objects referenced in this article
Strain LEW.WKY-(D13Arb15-D13Rat58)/Tja null Rattus norvegicus

Additional Information