RGD Reference Report - Chronicity of pristane-induced arthritis in rats is controlled by genes on chromosome 14. - Rat Genome Database

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Chronicity of pristane-induced arthritis in rats is controlled by genes on chromosome 14.

Authors: Wester, L  Olofsson, P  Ibrahim, SM  Holmdahl, R 
Citation: Wester L, etal., J Autoimmun 2003 Dec;21(4):305-13.
RGD ID: 730280
Pubmed: PMID:14624754   (View Abstract at PubMed)

To address the possibility that genes specifically control the chronic phase of arthritis we have isolated a congenic fragment from the resistant E3 rat on the susceptible DA rat background. The isolated fragment covers the Pia6 quantitative trait locus on chromosome 14, which previously has been identified to be linked to chronic pristane induced arthritis (PIA) in gene segregation experiments of an (E3xDA)F(2)-cross. Heterozygous Pia6 congenic rats (DA.Pia6) were protected from chronic active arthritis specifically, as determined by macroscopic scoring, histopathology and release of cartilage oligomeric matrix protein (-reflecting ongoing cartilage destruction). The difference was seen only during the chronic active phase of arthritis starting approximately 5 weeks after onset of arthritis. Interestingly, the plasma concentration of the lipocalins alpha(1)-acid glycoprotein and alpha(1)-microglobulin was found significantly altered in nai;ve congenic rats compared to the DA rat. The concentration of alpha(1)-microglobulin was found to be significantly higher throughout the disease course, while alpha(1)-acid glycoprotein had a lower concentration in nai;ve rats, which was highly significant in the chronic phase. The altered concentrations of these proteins already before development of chronic arthritis may provide a clue to the pathogenic process controlled by the Pia6 genes. We conclude that the active relapsing chronic arthritis is under a unique genetic control that is different from the control of acute arthritis and postulate that the liver plays an important role in this regulation.



RGD Manual Disease Annotations    Click to see Annotation Detail View

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
DA.E3-(D14Wox8-D14Rat64)/RhdRatExperimental Arthritis disease_progressionIAGPpristane RGD 
Pia20RatExperimental Arthritis  IDA  RGD 

Phenotype Annotations    Click to see Annotation Detail View

Mammalian Phenotype

Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
DA.E3-(D14Wox8-D14Rat64)/RhdRatautoimmune arthritis  IAGP  RGD 
Pia20Ratjoint swelling  QTM  RGD 
Objects Annotated

QTLs
Pia20  (Pristane induced arthritis QTL 20)


Additional Information