tailieunhanh - Báo cáo y học: "Increased activity and expression of histone deacetylase 1 in relation to tumor necrosis factor-alpha in synovial tissue of rheumatoid arthritis"

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học General Psychiatry cung cấp cho các bạn kiến thức về ngành y đề tài: Increased activity and expression of histone deacetylase 1 in relation to tumor necrosis factor-alpha in synovial tissue of rheumatoid arthritis. | Kawabata et al. Arthritis Research Therapy 2010 12 R133 http content 12 4 R133 RESEARCH ARTICLE Open Access Incre asCed activity and expression of histone deacetylase 1 in relation to tumor necrosis factor-alpha in synovial tissue of rheumatoid arthritis Tomoko Kawabata1 Keiichiro Nishida 2 Koji Takasugi3 Hiroko Ogawa4 Kenei Sada1 Yasutaka Kadota5 Junko Inagaki4 Satoshi Hirohata4 Yoshifumi Ninomiya4 and Hirofumi Makino1 Abstract Introduction The purpose of this study was to investigate the profile of histone deacetylase HDAC expression in the synovial tissue of rheumatoid arthritis RA compared with that of normal control and osteoarthritis OA and to examine whether there is a link between HDAC activity and synovial inflammation. Methods HDAC activity and histone acetyltransferase HAT activity were determined in nuclear extracts of total synovial tissue surgically obtained from normal OA and RA joints. The level of cytoplasmic tumor necrosis factor a TNFa fraction was measured by ELISA. Total RNA of synovial tissue was used for RT-PCR of HDAC1-8. In synovial fibroblasts from RA RASFs the effects of TNFa on nuclear HDAC activity and class I HDACs 1 2 3 8 mRNA expressions were examined by quantitative real-time PCR. The protein expression and distribution of class I HDACs were examined by Western blotting. Results Nuclear HDAC activity was significantly higher in RA than in OA and normal controls and correlated with the amount of cytoplasmic TNFa. The mRNA expression of HDAC1 in RA synovial tissue was higher than in OA and normal controls and showed positive correlation with TNFa mRNA expression. The protein level of nuclear HDAC1 was higher in RA synovial tissue compared with OA synovial tissue. Stimulation with TNFa significantly increased the nuclear HDAC activity and HDAC1 mRNA expression at 24 hours and HDAC1 protein expression at 48 hours in RASFs. Conclusions Our results showed nuclear HDAC activity and expression of HDAC1 were .

TÀI LIỆU LIÊN QUAN
TỪ KHÓA LIÊN QUAN
crossorigin="anonymous">
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.