Figure 1From: Mosaic chromosomal aberrations in synovial fibroblasts of patients with rheumatoid arthritis, osteoarthritis, and other inflammatory joint diseasesNumerical chromosomal aberrations in the RA synovial membrane. Polysomy (hatched bars) and trisomy (shaded bars) of the individual chromosomes are depicted as means ± SEM for n = 7–13 patients. Polysomies in synovial tissue of RA patients exceeded threshold levels (broken lines) only in the case of chromosome 7. In P-1 synovial fibroblasts (FB), threshold levels were exceeded for polysomies of chromosomes 6, 7, 8, and 9. In P-4 synovial FB, threshold levels were exceeded for polysomies of chromosomes 6, 7, 8, 9, and 18 and monosomy 18; there was a clear increase between P-1 and P-4. Considering only trisomic nuclei, only aberrations in the numbers of chromosome 7 exceeded threshold levels, even in P-4 synovial FB. P-0 = primary culture; P-1 = passage 1; P-4 = passage 4.Back to article page