Objective To observe the levels of Th1 and Th2 type cytokines of peripheral blood CD+4 T lymphocytes at different stage of treatment of colonic cancer,in order to find out the laboratory evidence of tumor immunotherapy.Methods The peripheral blood lymphocytes were stimulated by stimulator in order to enhance the expression of cytokines.Then specific fluorescent-conjugated monoclonal antibodies were added to combine with its specific antigens.Cytokines were detected by flow cytometry.Results At different stage of treatment of colonic cancer,the levels of Th1 type cytokines of each stage was significant.The levels of Th2 type cytokines at each stage were not significant.The IFN-γ//IL-4 ratio were significantly different during tumor immunothempy.Conclusion At different stage of treatment of colonic cancer,the levels of Th,type cytokines were obviously associated with treatment.The levels of Th2 type cytokines had no association with treatment.Among them,the changes of Th1/Th2 ratio (IFN-γ/IL-4) had more correlation with tumor immunotherapy.So the reasonable immunotherapy can reverse Th1/Th2 ratio and immune inhibition.

Objective To evaluate the clinical applied value of serum vascular endothelial growth factor (VEGF) in therapeutic process of patients with malignant tumor. Methods Serum VEGF levels and positive rates were measured by ELISA in 337 untreated cancer patients, 25 postoperative and 22 recurring postoperative patients with malignant tumor, while 47 benign tumor and 61 healthy individuals as controls. Results Serum VEGF levels and positive rates were significantly higher in patients with various malignant tumors than in benign tumors and healthy controls (P 0.05). Conclusions It was helpful to get a message of pathogenetic condition of malignant tumor patients whose serum VEGF was dynamically monitored.

Objective:Effect of serum IL 2R on immunofunction were studied.Methods:Serum IL 2R and lymphocytic competence to PHA,IL 2,NK activity,LAK activity,subsets of T lymphocytes and delayed skin supersensitization were tested in four groups,including 30 normal controls,16 athletes,50 patients with lung cancer and 50 malignant lymphomas.The correlation between the tested immunofunction in each group were also studied.Results:In normal population,no correlations were found.Malignancies with high level of sIL 2R were negtively correlated with various immunofunctions,such ascytologic competence to IL 2,NK activity,LAK aitivity and number of CD 3.No significant correlation was found in cytologic competence to PHA and ratio of CD 4 and CD 8.Conclusion:sIL 2R is an important blocking factor for immunofunction,but under the interaction between various cytokines in the immunoregulatory network,its blockege is different with strong or week competence.

Objective To apply fluorescence-activated cell sorting (FACS) and magnetic activated cell sorting (MACS) in sorting natural killer (NK) cells from human peripheral blood. The efficiency of these two methods were compared so that the basic conditions for the further study on the lower proportion of peripheral blood cells could be created. Methods Twenty cases of normal peripheral blood and 3 cases of post-hematopoietic stem cell transplantation (post-HSCT) were collected and NK cell were sorted by FACS and MACS. Results Before sorting the normal peripheral blood, the proportion of the NK cell in the leukocyte was (12.86±3.62) %, the purity of NK cell was up to (96.15±2.03) % and the recovery was (95.08±2.16) %after sorting by FACS, the purity was up to (93.35±3.61) % and the recovery was (94.11±3.01) % by MACS.And before sorting the post-HSCT peripheral blood, the proportion of the NK cell in the leukocyte was (11.01±2.08) %, the purity of NK cell was up to (96.22±2.16) % and the recovery was (95.27±1.18) % after sorting by FACS. The purity was up to (90.98±1.94) % and the recovery was (94.54±3.52) % by MACS. Thereis difference in purity of NK cell (t = 5.925, P ＜0.05), while no difference in rate of recovery between 2methods (t = 0.789, P ＞0.05). Conclusion FACS is more efficient, rapidly and easily than MACS in sorting NK cell, especially for post-HSCT cases.

Objective To analyse the dysfunction of immunity and clinical significance in patients with cardiac cancer.Methods The level of CD4+ CD25hi CD127low Treg cells were detected by flow cytometry (FCM),and serum IL-10 and TGF-β1 levels were determined by enzyme linked immunosorbent assay (ELISA) kit in 56 patients with cardiac cancer.15 healthy volunteers were tested as normal controls.The clinical data of each patient were collected and analyzed. Results There was a significantly higher percentage of CD4+ CD25hi CD127low Treg cells in patients with cardiac cancer (5.73±1.56)% than that (4.45±1.06)% of healthy volunteers (P<0.01).The IL-10 and TGF-β1 levels in the serum of patients with cardiac cancer were also significantly higher than that of healthy volunteers (P<0.05).There was a positive correlation between levels of IL-10.TGF-β1 and the levels of CD4+ CD25hi CD127low Treg cells.The number of CD4+ CD25hi CD127low regulatory T cells in the peripheral blood of cardiac cancer patients were significantly correlated with clinical stages and metastasis lymph node.Conclusion The CD4+ CD25hi CD127low Treg cells in the peripheral blood of cardiac cancer patients is significantly increased in comparison with that in healthy volunteers,and was also correlated with different stages.The abnormal levels of CD4+ CD25hi CD127low Treg cells may be related to tumor progression in patients with cardiac cancer.

Objective To investigate the change of peripheral blooe T cell subsets,NK cells ane serum soluble interleukin-2 receptor(sIL-2R)concentration in patients with gastric cancer before ane after surgery,ane to uneerstane immune function status ane changes of perioperative gastric cancer patients. Methods One huneree ane thirty-five perioperative gastric cancer patients were selectee as our subjects who hospitalizee from May 2009 to May 2011 in Tumor Hospital of Shanxi Province,ane they were servee as treatment group,while 50 healthy subjects were selectee as controls. The number of CD3 + ,CD4 + ,CD8 + T cells,rate of CD4 + / CD8 +ane the NK cell ratio in blooe cells were eetectee by flow cytometry. ELIAS was appliee to measure serum sIL-2R concentration. Observee the above ineexes of control group at the same perioe,ane comparee the ineexes before operation of 1 e of the treatment group. Results The rate of NK cells,CD3 + T cells ane CD4 + / CD8 +ratio in patients at pre-operation were(10. 11 ± 3. 64)% ,(55. 60 ± 9. 61)% ,(30. 22 ± 6. 17)% ,1. 14 ± 0. 35,respectively,lower than that of control group(( 28. 39 ± 5. 81 )% ,( 68. 65 ± 7. 39 )% ,( 47. 87 ± 4. 85)% ,1. 82 ± 0. 24 respectively;t = - 5. 9,8. 6,8. 2,12. 7;P < 0. 01). CD8 + T positive rate of cells increasee from(27. 05 ± 7. 86)% to(34. 26 ± 6. 23)%(t = - 6. 5,P < 0. 01). At 14th eay after surgery,the cell immune function of the patients recoveree graeually,ane there were statistically significant eifferences in the above ineexes comparee with pre-operation(P < 0. 05). The eramatic changes were seen among patients with the late Gastric cancer TNM staging. Comparee with patients with stage Ⅳ,all above ineex were significant eifferent from that of patients with stageⅠ,Ⅱ(P < 0. 05),ane no significant eifferences was seen in patients with stageⅢ(P > 0. 05). The concentration of serum sIL-2R in patients with gastric cancer before operation was(575. 71 ± 34. 77)U/ L,higher than that of healthy persons((428. 26 ± 21. 77)U/ L,t = - 7. 9,P < 0. 01),ane serum sIL-2R levels in patients with stage Ⅲ,Ⅳ was lower than that of patients with stage Ⅰ,Ⅱ patients with low(P< 0. 05). Conclusion The immune function of patients with gastric carcinoma is relatee to tumor loae size ane eifferent pathological staging. The ineex of the ratio of NK cells ane T lymphocyte subsets,serum sIL-2R levels can be servee as ineicators for monitoring perioperative evaluation of prognosis of gastric cancer.

Objective To investigate the effect of Aidi injection combined with chemotherapy on CD+4CDhi25CDlow127regulatory T (Treg) cells in peripheral blood of advanced non-small-cell lung cancer (NSCLC).Methods Sixty patients with advanced NSCLC were randomly divided into the study group (treated with Aidi injection combined with chemotherapy) and the control group (treated with chemotherapy).The levels of CD+4CDhi25CDlow127Treg cells were detected by flow cytometry (FCM), and TGF-β1 and IL-10 levels were determined by enzyme linked immunosorbent assay (ELISA) before and after chemotherapy. A group consisted of 20 healthy persons was set up meanwhile.Results There was a significantly higher percentage of CD+4CDhi25CDlow127Treg cells in patients with NSCLC (5.77±1.50) % than that(3.84±0.96) % of healthy volunteers (P=0.000).The IL-10 and TGF-β1 levels[(24.09±6.74), (197.76±43.76) ng/ml]in the serum of patients with NSCLC were also significantly higher than that[(19.39±5.73), (141.13±32.17) ng/ml]of healthy volunteers (P =0.006,P =0.002). In control group, levels of CD+4CDhi25CDlow127 Treg cells were obviously lower than that before chemotherapy (P =0.048).Levels of TGF-β1 and IL-10[(22.25±6.79), (184.85±49.11) ng/ml]were slightly decreased, which showed no significant difference contrast to pretherapy[(24.37±8.10), (197.16±44.57) ng/ml](P =0.276, P =0.314).In study group, levels of CD+4CDhi25CDlow127Treg cells and TGF-β1, IL-10[(4.36±1.19) %,(20.16±4.73), (165.42±39.57) ng/ml]were obviously lower than that before chemotherapy[(5.78±1.50) %,(23.81±5.15), (198.35±43.68) ng/ml](P=0.000, P=0.003, P =0.006).Conclusion The CD+4CDhi25CDlow127 Treg cells in the peripheral blood of advanced NSCLC patients is significantly increased. Aidi injection combined with chemotherapy can obviously reduce the level of CD+4CDhi25CDlow127 Treg cells in patients with advanced NSCLC, and the combined therapy could improve the immune function of patients.