ABSTRACT
Objective:To study the changes of cardiopulmonary function in patients with rheumatoid arthritis,and to analyze the correlation between the changes ofcardiopulmonary function with oxidative stress and the peripheral blood lymphocyte attenuation factor.Methods:130 cases of patients with rheumatoid arthritis were studied as case group, and 50 cases of healthy persons were studied as normal control group.Detected the heart function parameters of two groups,which contained EF%,SV%,FS%,E A,E/A;lung function parameters of FVC,FEV1,MVV,PEF;B and T lymphocyte attenuation factor expression and activation level.Peripheral Cytokine(IL-17 and TNF-α,IL-4,IL-35) and oxidative stress index (ROS,MDA,SOD,TAOC) were detected by enzyme linked immu-nosorbent assay.Results:The indexes of cardiac function in the case group were significantly lower than that in the control group.103 cases had abnormal cardiac function index in the case group,which accounted for 79.23% of the case group,while the E/A had the highest abnormal rate.The case group had thickening of LADd, increasing of peak A, decreasing of EF, E peak and E /A, than the normal control group,the differences were statistically significant (P<0.05).Compared with normal control group,pulmonary function parameters were significantly lower in case group.88 cases of case group had abnormal pulmonary function,accounting for 67.69% of the case group.Among them,the abnormal rate of PEF was the highest.Pulmonary function indexes of case group was significantly lower than that of the control group, the difference was statistically significant ( P<0.05 ).Correlation analysis showed that the correlation coefficient of cardiac function indexes EF with CD24+cells and CD19+CD24+cells were respectively -0.353 and -0.457,which had negative correlation,with ROS the correlation coefficient was 0.459,which had positive correlation.The correlation coefficient of the cardiac function indexes in FS with CD24+cells,and CD19+CD24+cells was -0.395 and -0.421,which had negative correlation; the correlation coefficient of peak A and CD19+cell was 0.423,which had positive correlation;the correlation coefficient of E/A and BTLA was 0.393,which had obvious positive correlation.SV and MDA,SOD were positively correlated.The parameters of lung function with hs-CRP and ESR had significantly negative correlation.The correlation coefficient of lung function parameters FVC with BTLA and CD19+CD24+were 0.513 and 0.596,which had a significant positive correlation,with the correlation coefficient and CD24+BTLA+, TNF-αwere -0.451 and-0.351,which had significantly negative correlation.The correlation coefficients of FEV1 with CD24+CD19+, TAOC and IL-4 were 0.535,0.466 and 0.519,which showed a positive correlation,with CD24+BTLA+,MDA were -0.461 and -0.358,which had significantly negative correlation.The correlation coefficient of PEF with SOD,TAOC,IL-4,IL-35 were 0.547,0.482, 0.643 and 0.452,which had significantly positive correlation,with MDA,ROS,IL-17 were -0.451,-0.423 and -0.417,which had a significant negative correlation ( P<0.05 ).Conclusion: RA imbalance of oxidative stress and cell immune disorders which runs through the whole process in the heart and lung injury.Therefore,in clinical treatment,treatment of joint symptoms in RA patients needs restore the body′s redox homeostasis,in order to increase the level of BTLA,activate B cell and,T cell,thereby inhibiting immune and inflammatory response,reducing the heart and lung function impairment.
ABSTRACT
Objective To investigate the dosimetric influence of pure carbon fiber treatment tabletop of Elekta Precise new linear accelerator in radiotherapy.Methods Surface-axis distance (SAD) technology was employed for the measurement.Two groups of fields were set and both of them were SAD opposed portals ( one of them went through the tabletop,while the other did not).A PTW electrometer and a 0.6 cm3 Farmer ionization chamber were utilized for comparison measurement.Then dose attenuation of the main table board,extended body board,the extended board for head,neck and shoulders,and the joints of these boards were calculated.Results Under the energy of 6 MV,the dose attenuations of the following locations were:1.4％ - 7.2％ at the main treatment table board; 2.8％ - 38.7％,1.4％ -30.1％,1.5％ -20.8％ and 1.4％ - 11.2％,respectively at distances of 1,4,7 and 8 cm from the joint of the main table board ;0.5％ - 5.0％ at the extended body board; 4.7％ - 15.4％ at distance of 1cm from the joint of the extended body board; 0.5％ -3.3％ at the neck position of the extended board for head,neck and shoulders; 5.3％ - 16.7％ at the shoulder positions; and 6.8％ -30.4％ at the joint between the extended boards and the main table board.Conclusions The dose attenuations of the new linear accelerator pure carbon fiber treatment tabletop vary at different locations. Considerable higher attenuations are observed at the table board joints than other locations.