| Autor: |
Galita G; Department of Clinical Chemistry and Biochemistry, Medical University of Lodz, 92-215 Lodz, Poland.; Doctoral Study in Molecular Genetics, Cytogenetics and Medical Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland., Sarnik J; Department of Rheumatology, Medical University of Lodz, 92-115 Lodz, Poland., Brzezinska O; Department of Rheumatology, Medical University of Lodz, 92-115 Lodz, Poland., Budlewski T; Department of Rheumatology, Medical University of Lodz, 92-115 Lodz, Poland., Dragan G; Department of Clinical Chemistry and Biochemistry, Medical University of Lodz, 92-215 Lodz, Poland., Poplawska M; Biobank, Department of Immunology and Allergy, Medical University of Lodz, 92-213 Lodz, Poland., Majsterek I; Department of Clinical Chemistry and Biochemistry, Medical University of Lodz, 92-215 Lodz, Poland., Poplawski T; Department of Pharmaceutical Microbiology and Biochemistry, Medical University of Lodz, 92-215 Lodz, Poland., Makowska JS; Department of Rheumatology, Medical University of Lodz, 92-115 Lodz, Poland. |
| Abstrakt: |
Rheumatoid arthritis (RA) is a chronic, multifactorial autoimmune disease characterized by chronic arthritis, a tendency to develop joint deformities, and involvement of extra-articular tissues. The risk of malignant neoplasms among patients with RA is the subject of ongoing research due to the autoimmune pathogenesis that underlies RA, the common etiology of rheumatic disease and malignancies, and the use of immunomodulatory therapy, which can alter immune system function and thus increase the risk of malignant neoplasms. This risk can also be increased by impaired DNA repair efficiency in individuals with RA, as reported in our recent study. Impaired DNA repair may reflect the variability in the genes that encode DNA repair proteins. The aim of our study was to evaluate the genetic variation in RA within the genes of the DNA damage repair system through base excision repair (BER), nucleotide excision repair (NER), and the double strand break repair system by homologous recombination (HR) and non-homologous end joining (NHEJ). We genotyped a total of 28 polymorphisms in 19 genes encoding DNA repair-related proteins in 100 age- and sex-matched RA patients and healthy subjects from Central Europe (Poland). Polymorphism genotypes were determined using the Taq-man SNP Genotyping Assay. We found an association between the RA occurrence and rs25487/XRCC1 , rs7180135/RAD51 , rs1801321/RAD51 , rs963917/RAD51B , rs963918/RAD51B , rs2735383/NBS1 , rs132774/XRCC6 , rs207906/XRCC5 , and rs861539/XRCC3 polymorphisms. Our results suggest that polymorphisms of DNA damage repair genes may play a role in RA pathogenesis and may be considered as potential markers of RA. |
