RGD Reference Report - Evaluation of quantitative trait loci regulating severity of mycobacterial adjuvant-induced arthritis in monocongenic and polycongenic rats: identification of a new regulatory locus on rat chromosome 10 and evidence of overlap with rheumatoid arthritis susceptibility loci. - Rat Genome Database

Send us a Message



Submit Data |  Help |  Video Tutorials |  News |  Publications |  Download |  REST API |  Citing RGD |  Contact   

Evaluation of quantitative trait loci regulating severity of mycobacterial adjuvant-induced arthritis in monocongenic and polycongenic rats: identification of a new regulatory locus on rat chromosome 10 and evidence of overlap with rheumatoid arthritis susceptibility loci.

Authors: Joe, B  Cannon, GW  Griffiths, MM  Dobbins, DE  Gulko, PS  Wilder, RL  Remmers, EF 
Citation: Joe B, etal., Arthritis Rheum 2002 Apr;46(4):1075-85.
RGD ID: 625379
Pubmed: (View Article at PubMed) PMID:11953987

OBJECTIVE: To evaluate the regulatory potential of genetic loci controlling Mycobacterium butyricum adjuvant-induced arthritis (Mbt-AIA) using mono- and polycongenic rats. METHODS: Of 4 quantitative trait loci (QTLs) that regulate Mbt-AIA, F344 alleles at 3 of these loci, Aia1, Aia2, and Aia3, are associated with lower arthritis severity, whereas F344 alleles at Aia4 are associated with greater arthritis severity. In this study, we constructed congenic lines by transferring 1 or more of the F344 genomic segments containing Aia1, Aia2, and Aia3 onto the DA genome. We comparatively evaluated their responses to Mbt-AIA with the responses of parental DA and F344 rats. RESULTS: Aia1, encompassing the rat major histocompatibility complex, reduced arthritis severity in monocongenic rats of both sexes. The arthritis-lowering effects of Aia2 and Aia3 were sex-influenced and were therefore observed in only males and only females, respectively. Polycongenic rats containing F344 genomic regions at Aia1, Aia2, and Aia3 developed Mbt-AIA of relatively greater severity than did F344 rats, implying that in DA and F344 rats, there could be other Mbt-AIA loci in addition to Aia1, Aia2, Aia3, and Aia4. To test the possibility that some of these Mbt-AIA-regulatory loci may colocalize with other arthritis QTLs, we evaluated Mbt-AIA in DA.F344 monocongenic rats containing collagen-induced arthritis QTLs. Cia5 (the QTL region on chromosome 10), but not Cia5a, Cia4, or Cia6, also regulated Mbt-AIA, and was named Aia5. CONCLUSION: F344 genomic regions at Aia1, Aia2, and Aia3 and the newly identified Aia5 contain genes that reduce Mbt-AIA severity in DA rats. These Mbt-AIA-regulatory loci overlap rheumatoid arthritis-susceptibility loci in humans.



Disease Annotations    

Phenotype Annotations    

Mammalian Phenotype
joint swelling  (IAGP)
Objects Annotated

QTLs
Aia5  (Adjuvant induced arthritis QTL 5)

Objects referenced in this article
QTL Cia5 Collagen induced arthritis QTL 5 Rattus norvegicus
Strain DA.F344-(D10Arb20-D10Arb22)/Arb null Rattus norvegicus
Strain DA/Bkl null Rattus norvegicus
Strain F344/NHsd F344/NHsd Rattus norvegicus

Additional Information