The effects of prostaglandin E_2 on hemodynamics and cardial function in normal rabbits and on cardioprotection in experimental acute myocardial infarction rabbits were investigated. To determine the action of prostaglandin E_2 in normal rabbits (n = 10), we measured arterial systolic pressure (ASP), arterial diastolic pressure (ADP), mean arterial pressure (MAP), heart rate (HR), left ventricular ejection time (LVET), +dp/dt max, -dp/dt max, Vc_E-50, T time after injected prostaglandin E_2 (1?g/min/kg). The results showed that ASP, ADP, MAP were decreased. HR, Vc_E-50, LVET were unchanged. To determine the effects of prostaglandin E_2 on the cardioprotection in acute myocardial infarction in rabbits (n=8), left ventricular systolic pressure (LVEP), +dp/dt max,-dp/dt max, ST of ECG, infarct size were also measured by us. The results showed that +dp/dt max, -dp/dt max were higher than control (n=9), ST lower than control, LVSP and infarct size were unchanged. Thus, prostaglandin E_2 could relax vascular smooth muscle, reduce laod of heart, decrease myocardial oxygen demands, maintain cardiac function during acute myocardial infarction.

Objective To investigate the relationship between the expression of endothelial nitric oxide synthase (eNOS), vascular endothelial growth factor (VEGF) and the angiogenesis in human malignant melanoma (MM). Methods Tissue sections from 31 MM patients were examined. The protein expression of eNOS and VEGF was detected using immunohistochemistry technique and morphological quantitative analysis. Microvessel density (MVD) was also counted by immunostaining with anti-FⅧRAg antibody. Results (1)The positive staining of eNOS and VEGF was detected in 71.4% (24 cases) and 83.9% (26 cases) of MM respectively. As negative control there was no staining in the nevus pigmentosus tissue sections. (2)There was a positive correlation between the expression of eNOS and VEGF in MM. (3)The positive correlation was also found between the MVD and the expression of eNOS and VEGF in MM. The number of MVD was higher in MM than that in nevus pigmentosus tissue. (4)The lymphatic metastasis was not correlated with the expression of eNOS and VEGF. Conclusion The number of the MVD increases along with the high expression of eNOS and VEGF in MM.

AimTo compare the protective immunity against challenge infection in mice immunized by crude antigen preparations derived from adult worms, newborn larvae and musele larvae of T richinella spiralis. MethodIntestinal adult worms, muscle larvae and blood absolute eosinophil level were counted; the level of serum IgG to antigens of T. spiralis muscle larvae was detected by ELISA. ResultsAdults reduimg rate was 82.19 %, 72.31% and 42.88 % in the adult, newborn larvae and muscle larvae antigen groups respectively. Muscle larvae were reduced 68.83%. 78.19% and 51.96% respectively. The serum IgG titer in all immunized groups increased significantly, the GMRT values of adult, newborn larvae and mudscle larval antigen groups were 7.46, 5.28and 4.92times higher than that in control group respectively. Periphery blood absolute eosinophil level enhanced significantly. ConclusionThe data demonstrate that all of the adult, newborn larvae and muscle larvae antigens of T. spiralis can activate specific humoral and cellular immunity which induce protection to challenge infection in mice. Among these antigens, adult and newborn larvae antigens show better immunogenicity and it may be possible that adult antigen will provide a potential vaccine for trichinosis.

Objective To investigate the treatments and prognostic factors of myasthenia gravis (MG) accompanied with thymomas and evaluate the treatment effects of such cases. Methods Our study was based on 103 cases of MG with surgically proved thymoma treated in our hospital The patients were treated with steroid therapy, radiotherapy and chemotherapy We evaluated the long term effects, the survival rate and the prognostic factors. Results The overall effective rate was 78 6%.Twenty three patients obtained a result of complete remission (22 3%), 26 pharmacological remission (25 2%), and 32 improvement (31 1%) The overall survival rates were 77 8% and 48 5% at 5 and 10 years, respectively Based on the three histologic types, the survival rates at 5 and 10 years of lymphyocytic thymoma were 88 9% and 72 7% respectively, of mixed thymoma 83 3% and 58 3%, of epithelial thymoma 55 6% and 10 0% The survival rates of stage Ⅰ and Ⅱ were 89 8% and 76 2% respectively at 5 and 10 years, and of stage Ⅲ and Ⅳ were 35 7% and 0% The survival rates of patients treated with steroid and radiotherapy were 88 9% and 57 1% respectively. Conclusions The administration of steroids therapy, radiotherapy and chemotherapy after removal of thymomas may enhance the long term curative effect in patients of MG with thymoma However, patients with epithelial thymoma or Masaoka's stage Ⅲ and Ⅳ had rather poor prognosis

Objective To know the air benzo[a]pyrene (B[a]P) pollution level in a coke plant of Chongqing Iron & Steel Group. Methods The concentrations of B[a]P in coke oven operating environment were determined by high performance liquid chromatography (HPLC) in different places of work in Sep. 2008.B[a]P concentration at different distances on the surrounding regions of coke plant and real-time monitoring in every quarter around the different functional areas was conducted. Results The air B[a]P concentration in the coke plant was descending following the order: the top of coke oven, the side of coke oven, the bottom of coke oven. B [a]P concentrations of oven bottom, oven side, oven top showed a gradual increase tendency with the extension of the sampling time (P

Objective To compare the levels of murine basophils distribution in different organs and analyze the characteristics of CD4+T cells activation/differentiation regulated by basophils.Methods Firstly,the mononuclear leukocytes were isolated separately from periphery blood,liver,spleen,lung and lymph nodes and the percentages of FcεR I+CD49b+ basophils in different organs were investigated.Secondly,liver basophils were purified by immuno-microbead strategy and co-clutured with different cytokines for 24 h.Apoptosis status of basophils was detected by Annexin V straining method.Thirdly,Mice were subcutaneously implanted with a miniosmotic pump containing 5 μg IL-3.At day 7 after implantation,liver mononuclear cells were harvested and the percentages of basophils were analyzed.Finally,Th1/Th2 polarization influenced by basophils orientated cytokines was investigated when naive OT-Ⅱ CD4 T cells were stimulated with spleen dentritic cells and OVA peptides.Results The percentage of murine basophils in mononuclear leukocytes of liver was significantly higher than that of periphery blood,spleen,lung and lymph nodes under physiological condition.Both of in vitro and ex vivo experiments showed that IL-3 played an inhibitory role on apoptosis of basophils.Cytokines secreted by basophils was investigated to induce Th2 polarization and inhibit Th1 response when naive OT-Ⅱ CD4 T cells were co-cultured with spleen dentritic cells and OVA peptides.Conclusion Th2 response was enhanced and Th1 response was down-regulated by murine basophils,which implied that basophils might participate in the construction of liver specific physiological immuno-tolerant microenvironment.

Objective To observe the neuroprotective effect of atorvastatin and its influence to tumor necrosis factor-alpha(TNF-α) and intedeukin-10(IL-10)in intraeerebral hemorrhage(ICH)rats,and to explore the possible mechanism of its neuroproteetive effect.Methods ICH WaS induced by stereotaxic infusion of collagenase into the right baSal ganglia,the expressions of TNF-α,IL-10 in the serum and brain tissue were analyzed by enzyme linked immunosorbent assay(ELISA),HE staining was used to evaluate the number of activated microglia.Results (1)The numbers of activated mieroglia,TNF-α and IL-10 were have significant differences between group A and group B(all P＜0.05).(2)In comparision with group B,numbers of activated mieroglia in group C,D and E were significantly redueed(P＜0.05).Atorvastatin cause a dose-dependent regulation,which decreased the level of TNF-α and inereased the level of IL-10 significantly(all P＜0.05).Conclusion The down-regulation of TNF-α and up-regulation of IL-10 might partly attribute to the neuropmtection of atovastatin.

Objectives To study the effects of pU- vascular endothelial growth factor (VEGF)- short interfering RNA (siRNA) on the formation and apoptosis of malignant melanoma in models of nude mice and its mechanism. Methods The siRNA eukaryotic expression vector for VEGF was constructed, then transfected into A375 (a human malignant melanoma cell line) by electroporation. The nude mice models of malignant melanoma were constructed. The protein expression of VEGF and factor Ⅷ related antigen (FⅧRAg) specific for vascular endothelial cells was detected by immunohistochemical technique and morphological quantitative analysis. Microvessel density (MVD) was counted based on the endothelial cells positively stained with anti-FⅧRAg antibody. The apoptosis of the neoplasms in nude mice was quantitatively determined by TdT mediated dUTP nick end labeling (TUNEL). Results Both the number and the growth speed of the neoplasm formation were lower in the experimental group than those in the controls (both P

OBJECTIVE: To develop an effective and reasonable performance appraisal management system in outpatient pharmacy so as to motivate staff's working enthusiasm. METHODS: A quantified appraisal management system was established in which personal rewards and punishments were taken into fully consideration. RESULTS & CONCLUSIONS: Due to the practice of performance appraisal management system, the working efficiency and the grade of service quality in outpatient pharmacy have been greatly enhanced, personal responsibility at each post has been reinforced, and the incidences of mistakes and accidents have been reduced.

The electrical pain perception were determined in healthy Chinese adults and factors were assessed. The anxiety-depression state of one hundred healthy Chinese were evaluated and the general information was recorded. Then electrical pain perception (perception threshold, pain threshold, pain tolerance) were assessed by neuromuscular monitor at the same time. Further study of influence factors such as gender, age, body mass index (BMI), left and right sides, degree of anxiety and depression, etc. were carried out on the pain perception. The results showed that 95% of the reference range of electrical perception threshold, pain threshold, pain tolerance were 4-7mA, 7 26mA and 15-60mA, respectively. The bilateral pain perception in males were significantly higher than that in females. There was no difference of effect between left and right sides. Age was positive related to pain perception, degree of depression was negative related to pain perception. BMI, degree of anxiety did not show association with pain perception. Therefore, gender, age and degree of depression were significantly related to electrical pain perception in healthy Chinese adults.
Adult ; Anxiety ; Body Mass Index ; Depression ; physiopathology ; Electric Stimulation ; Female ; Humans ; Male ; Pain Perception ; Pain Threshold ; Reference Values