title: Comparison between the protective effects of mycobacterial 65-kD heat shock protein and ovomucoid in pristane-induced arthritis: relationship with agalactosyl IgG.
abstract: The IgG of patients with rheumatoid arthritis and mice with pristane induced arthritis (PIA) tends to lack the terminal galactose normally on the conserved N-acetylglucosamine linked beta 1-2 to mannose in IgG. The terminal N-acetylglucosamine (GlcNAc) residues of oligosaccharides on agalactosyl IgG may be an important component of the action of these glycoforms. Here, administration of ovomucoid, a glycoprotein rich in terminal GlcNAc, before pristane injection was found to reduce the incidence of PIA. This observation is the second report of an intraperitoneally administered antigen that reduces the incidence of PIA, mycobacterial 65-kD heat shock protein (hsp65) being the first. The suppressive effect of ovomucoid was not transferred from protected to naive recipients by spleen cells at the dose tested. By contrast, transfer of spleen cells from hsp65-protected mice to naive recipients conferred protection and this protection may be antibody-mediated. It is considered that ovomucoid and hsp65 protect against the development of PIA by different mechanisms.
authors.affiliation: Department of Pathology and Microbiology, School of Medical Science, University of Bristol, UK.
authors.forename: M
authors.initials: M
authors.lastname: Ghoraishian
authors.forename: C J
authors.initials: CJ
authors.lastname: Elson
authors.forename: S J
authors.initials: SJ
authors.lastname: Thompson
mesh_terms: D000818:Animals; D001168:Arthritis / Q000139:chemically induced / Q000276:immunology / Q000517:prevention & control*; D001426:Bacterial Proteins; D018834:Chaperonin 60; D018833:Chaperonins; D006360:Heat-Shock Proteins / Q000494:pharmacology*; D007116:Immunization, Passive; D007074:Immunoglobulin G / Q000097:blood*; D007274:Injections, Intraperitoneal; D008297:Male; D051379:Mice; D008808:Mice, Inbred CBA; D009163:Mycobacterium bovis; D010059:Ovomucin / Q000008:administration & dosage / Q000494:pharmacology*; D013154:Spleen / Q000276:immunology; D013729:Terpenes / Q000633:toxicity
chemical_list: D001426:Bacterial Proteins; D018834:Chaperonin 60; D006360:Heat-Shock Proteins; D007074:Immunoglobulin G; D013729:Terpenes; C064155:agalactosyl IGG; C074119:heat-shock protein 65, Mycobacterium; C009042:pristane; D010059:Ovomucin; D018833:Chaperonins