Objective To observe the general status and the immunity of DBA/2 mice injected with leukemia vaccine during the immune reconstitution, and to observe the survival rate of these injected mice that were then challenged by L1210 cells. Methods Normal mice and reconstituted lymphopenic mice (RLM; DBA/2 mice rendered lymphopenic with sublethal irradiation and reconstituted with naive splenocytes) were used in the vaccination and challenge experiments with L1210 cells. Results Following vaccination, a significant increase of the IFN-? was detected in the blood of vaccinated RLM compared with that of vaccinated normal mice, as assessed by ELISA. Significantly, greater protection was induced in vaccinated RLM, which led to a stronger protection from death. Conclusion The vaccination of reconstituted lymphopenic hosts could elicit superior anti-tumor immunity compared with normal hosts, highlighting the potential clinical benefit of performing tumor vaccination during immune reconstitution.

Objective:To evaluate the cytotoxicity of macrophage of C57BL/6 mice treated with the prepared leukemia vaccine.Methods:Established the leukemia burden mice and prepared three types of leukemia vaccine,which were administered on the mice respectively.The MTT colormetric method was adopted 2 and 4 weeks later to measure the cytotxicity of M? derived from the mice accept immunotherapy or prevention,and compared with control group.Results:(1)With the growth of leukemia cells in the mice,the cytotoxicity of M? was seriously depressed;(2)The administration of tumor vaccine prepared from inactivated tumor cells,IFA and cytokines,such as rGM CSF,rIL 2 and rIL 6,promote the cellular immunity of tumor burden mice,more effciently than tumor vaccine made from either inactivated tumor cells and IFA or inactive tumor cells themselves along.Conclusion:The tumor vaccine simply prepared with inactive tumor cells,IFA and cytokines can active the non specific cellular immunity that represented as M?,for example non specific cytotoxicity,antigen present,immune surveillance and so on,these can build a base for active the T lymphocyte the next.The tumor vaccine provides a promising future in the therapy against hematopietic tumor.

Objective To determine the role of interleukin-18(IL-18) and vascular endothelial growth factor (VEGF) in the ovari-an hyperstimulation syndrome (OHSS) development. Methods Serum and follicular IL-18 and VEGF levels were measured with ELISA in 66 IVF patients, who were divided into three study groups according to OHSS risk factors on the day of ovum retrieval and whether will devel-op OHSS in future or not. 20 patients had no OHSS risk factors (normal group), 28 patients had OHSS risk factors without developing OHSS (OHSS risk group) and 18 patients had OHSS risk factors and developing OHSS in future (OHSS group). Results Serum and follicular IL-18 levels in OHSS group were significantly higher than those of other two groups(P<0.01). Serum and follicular VEGF levels in OHSS group were also significantly higher than those of other two groups(P<0.01). Conclusion Serum and follicular IL-18 and VEGF levels in OHSS group increased significantly, which suggested IL-18 and VEGF were positive correlated with OHSS development. And follicular IL-18 and VEGF levels in serum on the day of ovum retrieval have a prediction role in OHSS development.

Objective To study the curative effects and adverse effects of the thalidomide combined with COMP chemotherapy in treating multiple myeloma(MM).Methods 42 patients were initially diagnosed as MM and 27 patients were refractory and relapsed MM.The small dose of thalidomide combined with COMP management and COMP management alone were used.The effective rate and adverse effects were analyzed.Changes of M-protein in serum,percentage of plasma cells in bone marrow and the level of hemoglobin were also analyzed in both pre-treatment and post-treatment periods.Results In 42 patients who were initially diagnosed as MM,the effective rate was 40.9% for 22 patients treated by chemotherapy alone and 70.0% for 20 patients treated by the thalidomide combined with chemotherapy.Statistic difference was observed between those two group.As to the 27 patients who were refractory and relapsed MM,the effective rate was 42.9% for 13 patients treated by chemotherapy alone and 84.6% for 14 patients treated by the thalidomide combined with chemotherapy.Statistic significance was present between them.Adverse effects were less and tolerated.Conclusion Treatment of small dose of thalidomide combined with COMP chemotherapy could significantly improve the effective rate with less adverse effects.

In recent years,the quality of study of medical students in their internship has declined because of the interruption of graduation record examination and obtaining employment after graduation.We made many managments every year in administration to enhance rules;On one hand we changed teaching pattern,methods and take a series of stimulating measures to encourage and promote teacher's teaching consciousness,on the other hand we ensured the quality of internship study and cultured excellent qualified medical students by adjusting time of internship,keeping a strict hand over examination and so on.

Objective:To observe the general status, the effect of resisting to the aggression of FBL-3 cells and protective immunity of the mice by using leukemia vaccine during the immune reconstitution.Methods:The immune deficiency C57BL/6 mice induced by total body irradiation were reconstituted immunity with homologous splenic lympocytes.The mice were immunized by injecting FBL-3 cells subcutaneously,and then attacked by using FBL-3 cells 7days thereafter.The activities of mice,the percentage of carcinoma formation and the growth status of tumor were observed.The amount of IFN-? in peripheral blood was determined by ELISA to evaluate the magnitude of cell immunity.The condition of cell infiltration in tumor central region and its periphery region was explored by patologic-section.Results:Immune reconstitution could obviously elevate protective immunity on the basis of using vaccine,and the amount of IFN-? was obviously higher.The FBL-3 tumors inoculated thereafter grwe slowly,and significant infiltration of mononuclear cells peri-tumor as well as necrosis of tumor cells were observed.Also,the life time of the mice was prolonged.Conclusion:Immune reconstitution and vaccine can significantly elevate protective immunity

Background and purpose:It is verifi ed that MCM2 is a specifi c marker in the cell cycle,and expressed in all cells entering into the cycle,however,no expression is found in the differentiated cells and static period cell.Therefore,in the abnormally proliferative developmental cells and mutagenic cells,MCM2 could be used to mark the status of the cells as a cellular proliferative marker,and then to be a diagnostic tool for some heterotypical pathological changes and tumors.Our study demonstrated that the expression and clinical significance of MCM2 in bladder transitional cell cancer(BTCC).Methods:The expression of MCM2 was examined by immunohistochemistry Streptavidin-Peroxidase method in 12 cases of normal bladder tissues and 42 cases of BTCC.Results:The positive expression of MCM2 in BTCC was 100%,whereas in normal tissues,no positive expression was found(P0.05).The expression of MCM2 was closely associated with tumor pathological grade(P

Objective To compare the difference of the left ventricular structure and diastolic func-tion in normotensive offspring with or without a family history of hypertension. Methods One hundred nor-motensive offspring were assessed. Fifty had a family history of hypertension (experimental group) and 50 had no family hi.history of hypertension (control group). By eehocardiography and Doppler tissue imaging, the following parameters of left ventricular structure and diastolic function were examined: interventricular septal thickness (IVST), left ventrieular posterior wall thickness (LVPWT), left ventricular internal dimension (LVIDed), left ventrieular mass index(LVMI) and E/A. Results Compared with control group, experimen-tal group had higher IVST, LVPWT and LVMI, lower peak velocity of the early diastolic wave (e) of mitral annulus, and lower e/a (P<0.05). No differences in LVIDed, left atrial diameter (LA),aortic dimension(AOD), E,A and E/A were found between the two groups. Conclusion The results indicate that genetic factor of parental hypertension influence left ventrieular structure and diastolic function in normotensive offspring, which may precede the elevation of blood pressure.

Objective To observe the efficacy of HAG regimen in remission inductive treatment for elderly patients with acute myeloid leukemia (AML) and myelodysplastic syndrome-refractory anemia with excess blasts (MDS-RAEB). Methods The clinical features of 21 cases with AML and 9 cases with MDSRAEB (≥60 year old) treated with HA-G regimen in remission induction were retrospectively analyzed,including the complete remission (CR) rate, efficiency rate as well as their toxicities. Results In 21 elderly patients with AML treated with HAG regimen, the efficiency rate was 66.7 % (14/21), CR rate 47.6 % (10/21).In 9 elderly patients with MDS-RAEB, the CR rate was 55.6 % (5/9). The main toxicity of HA-G regimen was infections secondary to hematopoiesis suppression after chemotherapy. All patients were well tolerated to adjusted regimen. Conclusion The HA-G regimen is much effective in remission induction for elderly patients with AML and MDS-RAEB.

Objective The aim of this study is to demonstrate the pathological characteristics about two types of pancreati‐tis ,providing new thinking about the mechanism of severe acute pancreatitis .Methods Thirty male Sprague‐Dawley rats were ran‐domly divided into three equal groups :sham‐operated (SO ,n=10) group ,mild acute pancreatitis (MAP ,n=10)) group and severe acute pancreatitis (SAP ,n=10) group ,all the rats were killed after 12 h of building model .Under the microscope ,we detected the pathological changes of pancreas ,liver ,lung and small intestine .The ultrastructure of pancreas ,liver ,lung and small intestine tissue were observed by transmission electron microscope .Results In SAP group ,congestion ,edema ,inflammatory cell infiltration ,lea‐king of blood componedts ,vascular endothelial injury and thrombosis of microcirculation were obviously observed .There is no ap‐parent pathological changes in the MAP group except the edema of pancreas .Conclusion Hemorrhage and necrosis are the main pathological characteristics in SAP rats ,has essential difference with MAP .These pathological characteristics provides us a new thinking for further study about the mechanism of SAP .