Review Article

New Studies of Pathogenesis of Rheumatoid Arthritis with Collagen-Induced and Collagen Antibody-Induced Arthritis Models: New Insight Involving Bacteria Flora

Figure 4

Synergistic effects of bacterial toxins to trigger and exacerbate arthritis in CAIA mice. CAIA in two mouse strains (DBA/1 and B10.RIII) was established by IV injection of the arthritogenic four-clone monoclonal antibody cocktail (1 mg) on day 0 and subsequent IP injection of 50 μg of lipopolysaccharide (LPS) from E. coli (a), or mycoplasma arthritidis mitogen (MAM) (b) on day 3. Mice developed arthritis within 24–48 hours after receiving the toxins and the arthritic score plateaus 7-8 days later and can last up to 30 days. (a) mAb plus LPS in DBA/1 mice. (b) mAb plus MAM in B10.RIII mice.
(a)
(b)