THE repertoire of T-cell antigen receptor(TcR)can be effectively analysed by an approachwith quantitative polymerase chain reaction(qPCR),which allows to characterize the ex-panding T-cell clones by the patterns of re...THE repertoire of T-cell antigen receptor(TcR)can be effectively analysed by an approachwith quantitative polymerase chain reaction(qPCR),which allows to characterize the ex-panding T-cell clones by the patterns of restricted usage of TcR V and J region genes.展开更多
Objectives To explore the pathogenesis of rheumatoid arthritis (RA) by studying the expression of T cell receptors (TCRs).Methods T cell receptor Vβ (TCR Vβ) gene usage and expression were analyzed from synovial mem...Objectives To explore the pathogenesis of rheumatoid arthritis (RA) by studying the expression of T cell receptors (TCRs).Methods T cell receptor Vβ (TCR Vβ) gene usage and expression were analyzed from synovial membrane and peripheral blood of 8 RA patients, 2 osteoarthritis patients and 2 accident amputees. The complementary determining region 3 (CDR3) of 25 TCR Vβ subfamily genes in unselected T cell populations were amplified semi-quantitatively by reverse transcription-polymerase chain reaction (RT-PCR). The products were further studied by genescan for frequency of Vβ usage.Results The numbers of Vβ subfamilies expressed by T cells from RA peripheral blood and synovial membrane were not significantly restricted. More importantly, biased Vβ gene expression in RA synovium was observed and Vβ6, Vβ17, and Vβ22 genes were the predominant subfamilies. It was noteworthy that the expression of Vβ17 in RA synovium was significantly increased. Conclusion Our data were consistent with the hypothesis that several antigen or superantigen-driven processes may be involved in the pathogenesis of RA.展开更多
Objective: To study on in immunological characteristics of T lymphocyte in peripheral blood from patients with Sjogren's syndrome (SS), provide the theory basis for the further research of Traditional Chinese medi...Objective: To study on in immunological characteristics of T lymphocyte in peripheral blood from patients with Sjogren's syndrome (SS), provide the theory basis for the further research of Traditional Chinese medicine (TCM) targeted therapy.Methods:T lymphocyte subsets in peripheral blood from SS, RA and normal control groups were tested with various monocbnal antibodies and multicolor flow cytometry.T lymphocyte subsets were tested in peripheral blood from SS patients of different TCM Syndromes. The relationship between T Lymphocyte subsets and disease activity was measured by erythrocyte sedimentation rate (SR)and serum IgG. Results: The percentage of CD4^+T cells and the ration of CD4^+/CD8^+T cells in peripheral bbod from SS patients decreased significantly, and the percentage of CD8^+T cells increased than that in control groups (P<0.05). Compared with patients in inactive period, the percentage of CD4^+T cells in peripheral bLood from SS patients in the active stage increased (P>0.05), the percentage of CD8^+T cells decreased (P>0.05), and the ration of CD4^+/ CD8^+T cells increased (P<0.05).Compared with control groups, the percentage of CD69 expressed on T cells in peripheral blood from SS patients decreased, and the percentage of CD95's expression increased (P<0.05).The percentage of CD69CD95's expression also increased (P>0.05). There were no differences among CD4^+T cells, CD8^+T ceLs and CD4^+/ CD8^+ in peripheral blood from SS patients of different TCM Syndromes (P>0.05). CD69 and CD95's expression on SS patients of different TCM Syndromes was no significantLy different (P>0.05).T cell receptor Vβ(TCR Vβ) subfamilies gene in peripheral blood from SS patients and control groups were expressed in all. Compared witji control groups, Vβ 5.3,Vβ 13.1,Vβ 12,Vβ 7.2 had significant differences (P<0.05).Comparison of different TCM Syndromes in SS group: Vβ 13.1 and Vβ 14 were significantly different (P<0.05).Conclusion:There was dysimmunity on T lymphocyte subsets in peripheral blood of SS patients, which was related to disease activity;apoptosis after activation of autoreactive T cell may be induced by Chinese medicine;TCR Vβ subfamilies of different TCM syndromes were different, which noted that different autoreactive T cells of abnormal activation tended to result in different expression of TCM Different syndromes.展开更多
文摘THE repertoire of T-cell antigen receptor(TcR)can be effectively analysed by an approachwith quantitative polymerase chain reaction(qPCR),which allows to characterize the ex-panding T-cell clones by the patterns of restricted usage of TcR V and J region genes.
文摘Objectives To explore the pathogenesis of rheumatoid arthritis (RA) by studying the expression of T cell receptors (TCRs).Methods T cell receptor Vβ (TCR Vβ) gene usage and expression were analyzed from synovial membrane and peripheral blood of 8 RA patients, 2 osteoarthritis patients and 2 accident amputees. The complementary determining region 3 (CDR3) of 25 TCR Vβ subfamily genes in unselected T cell populations were amplified semi-quantitatively by reverse transcription-polymerase chain reaction (RT-PCR). The products were further studied by genescan for frequency of Vβ usage.Results The numbers of Vβ subfamilies expressed by T cells from RA peripheral blood and synovial membrane were not significantly restricted. More importantly, biased Vβ gene expression in RA synovium was observed and Vβ6, Vβ17, and Vβ22 genes were the predominant subfamilies. It was noteworthy that the expression of Vβ17 in RA synovium was significantly increased. Conclusion Our data were consistent with the hypothesis that several antigen or superantigen-driven processes may be involved in the pathogenesis of RA.
文摘Objective: To study on in immunological characteristics of T lymphocyte in peripheral blood from patients with Sjogren's syndrome (SS), provide the theory basis for the further research of Traditional Chinese medicine (TCM) targeted therapy.Methods:T lymphocyte subsets in peripheral blood from SS, RA and normal control groups were tested with various monocbnal antibodies and multicolor flow cytometry.T lymphocyte subsets were tested in peripheral blood from SS patients of different TCM Syndromes. The relationship between T Lymphocyte subsets and disease activity was measured by erythrocyte sedimentation rate (SR)and serum IgG. Results: The percentage of CD4^+T cells and the ration of CD4^+/CD8^+T cells in peripheral bbod from SS patients decreased significantly, and the percentage of CD8^+T cells increased than that in control groups (P<0.05). Compared with patients in inactive period, the percentage of CD4^+T cells in peripheral bLood from SS patients in the active stage increased (P>0.05), the percentage of CD8^+T cells decreased (P>0.05), and the ration of CD4^+/ CD8^+T cells increased (P<0.05).Compared with control groups, the percentage of CD69 expressed on T cells in peripheral blood from SS patients decreased, and the percentage of CD95's expression increased (P<0.05).The percentage of CD69CD95's expression also increased (P>0.05). There were no differences among CD4^+T cells, CD8^+T ceLs and CD4^+/ CD8^+ in peripheral blood from SS patients of different TCM Syndromes (P>0.05). CD69 and CD95's expression on SS patients of different TCM Syndromes was no significantLy different (P>0.05).T cell receptor Vβ(TCR Vβ) subfamilies gene in peripheral blood from SS patients and control groups were expressed in all. Compared witji control groups, Vβ 5.3,Vβ 13.1,Vβ 12,Vβ 7.2 had significant differences (P<0.05).Comparison of different TCM Syndromes in SS group: Vβ 13.1 and Vβ 14 were significantly different (P<0.05).Conclusion:There was dysimmunity on T lymphocyte subsets in peripheral blood of SS patients, which was related to disease activity;apoptosis after activation of autoreactive T cell may be induced by Chinese medicine;TCR Vβ subfamilies of different TCM syndromes were different, which noted that different autoreactive T cells of abnormal activation tended to result in different expression of TCM Different syndromes.
