Objective To investigate the role of HLA class II antigen of human monocytes in pathogenesis of herpes simplex virus-2 (HSV-2) infection. Methods Human monocytes were infected by HSV-2 (333 Strain). The cultured cells were collected at the first, third, 5th, and 7th days of post-infection. The expression of HLA class II antigen of the infected monocytes was measured by alkaline phosphotase anti-alkaline phosphotase method (APAAP). Results The expression of HLA class II antigen on the monocytes significantly decreased at the first day of post-infection,and then gradually increased and reached to the normal control level at the 7th day of post-infection. Conclusion HLA class Ⅱ antigen expression of monocytes was inhibited by HSV-2 infection at early stage, which may be one of means of virus escaping host immunity. The expression of HLA class Ⅱ antigen may play an important role in HSV-2 pathogenicity and immunity.

Objective To explore the relationships between the serum and urinary levels of procollagen Ⅲ and renal injury at the early stage of hypertension in sponantously hypertensive rats. Methods 16 sponantously hypertensive rats (SHR) were divided into treated group (losartan 30mg?kg -1?d -1) and untreated group, each group containing 8 animals, and 8 Wistar-kyoto rats served as normotensive control group(WKY). The serum and urinary levels of procollagen Ⅲ and ? 2-microglobin, and urinary microalbumin level were measured by radioimmunoassay 16 weeks after treatment. Results Blood pressure, serum ? 2-microglobin level, and the urinary levels of procollgen Ⅲ, ? 2-microglobin and microalbumin in SHR were significantly higher than those in wistar-kyoto rats. Losartan could decease the levels of the indices above in SHR. Serum procollagen Ⅲ level had not significant difference among the three groups of rats, and was not correlated with urinary procollagen Ⅲ level. There were positive correlation between serum and urinary ? 2-microglobin levels, and urinary procollgen Ⅲ level was positively retated to urinary ? 2-microglobin, urinary microalbumin and systalic pressure. Conclusion The levels of urinary procollgen Ⅲ,? 2-microglobin and microalbumin could reflect the lesion of glomerulus and tubulointerstitum at the early stage of essential hypertension in SHR.

ObjectiveTo explore the influence of breath muscles functional training on convalescent patients with chronic obstructive pulmonary disease(COPD).Methods56 COPD patients had breath muscles functional training for 1 year and clinical indexes,including cold time,time in hospital,hemoglobin,blood gas analysis and hemorheology were observed.ResultsAfter breath muscles functional training,the cold time and time in hospital had shortened;hemoglobin,blood gas analysis and hemorheology of patients had ameliorated obviously(P<0.01).ConclusionBreath muscles functional training has affirmatively effect of boosting up corporeity,ameliorating lack of oxygen,adjusting internal environment on convalescent patients with COPD.

Objective To explore the imaging features of breast cancer by CR mammography,in order to improve the diagnostic level. Methods The CR mamographic features of 37 patients with breast cancer confirmed surgically and pathologically were analysed retrospectively. Results In the 37 cases of breast cancer,the following abnormal signs were found in CR mammograms: mass(n=29),without mass(n=8),calcification(n=15),abnormal vascularity(n=7),inverted nipple(n=6),thickened skin(n=3),sign of tower's tine(n=3),sign of funnel(n=1),focal structural disorder and small focus of increased density(n=3). Conclusion The masses and calcificationsare the main radiological features in breast cancer,CR mammography may show the characteristics of breast cancer,it is one of the mosteffective means in diagnosis of breast cancer.

AIM: To investigate the expression of phosphatidylinositol 3-kinase (PI-3K) during the proliferation of the hypoxic pulmonary arterial smooth muscle cells(PASMC). METHODS: The cultured PASMC was divided into two groups: serum-free medium (SFM) group and 48 hours hypoxia (H48h) group. Immunohistochmistry(IHC) and Flowcytometer(FCM) were used to detect the cultured PASMC. RESULTS: The positive expression of PI-3K p110 existed in both cultured PASMC groups. The staining intensity in H48h group (0 1891?0 0301) was significantly stronger than that in SFM group (0 1025?0 0164, P

Adult ; Aged ; Antineoplastic Combined Chemotherapy Protocols ; therapeutic use ; Carcinoma, Small Cell ; metabolism ; pathology ; therapy ; Cardia ; Chemotherapy, Adjuvant ; Chromogranin A ; metabolism ; Female ; Follow-Up Studies ; Gastrectomy ; methods ; Humans ; Male ; Middle Aged ; Phosphopyruvate Hydratase ; metabolism ; Stomach Neoplasms ; metabolism ; pathology ; therapy ; Survival Rate

Objective To establish a model to predict the cell-cycle process in response to ionizing radiation.Methods Human choroidal malignant melanoma 92-1 cells were used and the cell cycle distribution of cells was analyzed in 0-96 h after exposure to X-rays.A phenomenological model was constructed based on biological knowledge to describe the cell cycle dynamics in experiments.Results In the present study,a phenomenological model was constructed to describe the cellcycle dynamics of synchronized 92-1 cells in responding to various doses of ionizing radiation.The simulation results obtained with the model were consistent with the experimental data,demonstrating that the model had a good expansibility and could be used to predict the dynamics of cell cycle in responding to ionizing radiation.Further theoretical modeling of the cellcycle dynamics was made and the results were consistent with the simulation.Conclusions A phenomenological model was constructed which could be used to describe the dynamics of cell cycle of cells exposed to ionizing radiation and was supported by the experimental data.Because this model is easy to run by the written code,it has a good expansibility for studying the behaviors of cell populations under various conditions.

Objective This study was designed to explore the effect of hyperglycemia on the expression of Toll-like receptor 4 (TLR4 ) in renal tubular epithelial cells and its significance in diabetic nephropathy. Methods In vitro cultured renal tubular epithelial cells ( NRK-52E) were divided into LG group (cultured in 5mmol / L glucose DMEM) and HC group (cultured in 25mmol / L glucose DMEM). Cells were harvested at different time points. Immunohistochemistry, Rt-PCR, Western Blot were used to detect TLR4 protein and mRNA expression, and the levels of IL-6 and TNF-α from the cell culture supernatant were determined by EL1SA assay. Results After 6 hours, there was increased expression TLR4 mRNA in HC group, which appeared to be maintained for 24 hours and began to decrease after 48 hours ( P < 0.05). TLR4 protein expression increased in HC group after 24 hours, and increased even further after 48 hours. Compared with LG groups, the difference had statistical significance ( P <0.05). In HG group, IL-6 and TNF-α expression in the supernatant from the NRK-52E culture were significantly increased ( P < 0.05) , and the expression of IL-6 and TNF-α was positive correlated with the expression of TLR4 protein ( r =0.799,0.820). Conclusion High glucose triggers an increase in expression of TLR4 in NRK-52E cells, itself leading to an increase in expression of inflammatory factors such as TNF-α and IL-6. In this way, TLR4 participates in the progress of diabetic nephropathy.

Objective To observe the effects of stress treatment for different time on autonomic behaviors and spatial learning-memory abilities of rats and to investigate the therapeutic efficacy of Chaihu Shugan San(CSS). Methods Seventy-five 8-week-old Wistar rats were randomly divided into blank control group, model control group, and low-, middle-, and high- dose CSS groups, 15 rats in each group. Chronic multi-stress model was set up. The rat body weight in various groups was measured. The autonomic behaviors of rats were observed by open field test, and the abilities of spatial learning-memory of rats were examined by Morris water maze test. Results (1)On modeling day 20, 30, the model control group had lighter body weight than the blank control group (P < 0.01); the middle-, high- dose CSS groups had higher body weight than the model control group (P < 0.05 or P < 0.01) , and the high-dose CSS group had the highest body weight, the difference being insignificant compared with the blank control group (P > 0.05). (2)Open field test results showed as follows:Compared with the blank control group, the total distance and central-area distance were shortened (P < 0.01) and the average speed was decreased(P < 0.01) in the model control group at different modeling time points, the effect being positively correlated with the modeling time; compared with the model control group, the total distance and central-area distance were prolonged(P < 0.05 or P < 0.01) and the average speed was increased (P < 0.05 or P < 0.01) in the low-, middle-, and high- dose CSS groups at different modeling time points, and the therapeutic efficacy of high- dose CSS group was approach to the blank control group. (3)Morris water maze test results showed as follows: Compared with blank control group, the average latent period was prolonged and the times of platform crossing were decreased in the model control group (P < 0.01); compared with the model control group, the average potential time was shortened and the times of platform crossing were increased in the middle- and high-dose CSS groups (P<0.01), the efficacy being not significantly different from that of the blank control group (P > 0.05). Conclusion The chronic stress may decrease the excitability, reduce autonomic behaviors, and injure spatial learning and memory abilities of rats, the effect being positively correlated with the modeling time. And CSS has an effect on improving the above indexes, in particular the middle-and high-dose of CSS.

There were 48 strains of bacilli obtained from 20 Chinese traditional medicines. Twenty-five strains had antagonistic effect against at least one of ten plant pathogens. Seven strains had antibiosis to more than four pathogens and the best strain had antibiosis to nine pathogens. After physiological and biochemical experiments,eight strains of 25 antagonistic bacilli were proved to be Bacillus subtilis,three were Bacillus cereus,one were Bacillus natto and one were Bacillus licheniformis. At the same time,two kinds of Chinese traditional medicines,which probably had antibacterial effect,were found.