2024-03-29T14:17:44Z
https://niigata-u.repo.nii.ac.jp/oai
oai:niigata-u.repo.nii.ac.jp:00016619
2022-12-15T03:48:07Z
453:456
471:537:538:1106
慢性関節リウマチ(RA)の発症および病態解明とその治療
慢性関節リウマチ(RA)の発症および病態解明とその治療
Onset and Pathogenesis in Rheumatoid Arthritis and its Treatment
羽生, 忠正
rheumatoid arthritis
histomorphometry
bone formation
extrathymic T cells
granulocytes
慢性関節リウマチ
組織形態計測
骨形成
胸腺外分化T細胞
顆粒球
To study joint destruction and osteoporosis in patients with rheumatoid arthritis (RA), we investigated bone loss using histomorphometric analysis. We also examined the property of colony forming unit-fibroblastic (CFU-F) isolated from tibial bone marrow in rats with collagen-induced arthritis (CIA) and iliac bone marrow in human. Our findings showed decreases of parameters of bone formation and of the number of alkaline phosphatase-positive CFU-F during onset of arthritis. We speculated that reduced bone formation was the predominant mechanism of bone loss in the pathogenesis of RA. We also demonstrated that the lymphocytes in the joints of CIA comprised resident T cells that are extrathymically generated in situ. In vivo treatment with various monoclonal antibody, these γδT cells and CD 8 _<αα>^+ cells were associated with suppression of the disease, especially after its onset. On the other hand, in patients with RA, CD57^+T cells levels were elevated, especially high in joints and its adjacent bone marrow. CD57^+T cells contained higher proportions of CD ^4-^8- cells and γδT cells than CD57^-T cells. We suggested that CD57^+T cells with NK cell marker probably were a counterpart of extrathymic T cells in human and had unique immuno-suppressive functions. In rats with CIA, great increase in number of granulocytes were also observed before the onset of arthritis. From these results, we are performing the evaluation of these treatment which makes it possible to decrease the granulocytes or to increase the CD57^+T cells using previous analysis system of bone formation.
新潟医学会
1998-07
jpn
departmental bulletin paper
http://hdl.handle.net/10191/45971
https://niigata-u.repo.nii.ac.jp/records/16619
AN00182415
00290440
新潟医学会雑誌
新潟医学会雑誌
112
7
371
379
https://niigata-u.repo.nii.ac.jp/record/16619/files/112(7)_371-379.pdf
application/pdf
1.4 MB
2019-08-07