In order to clarify the relationship between PAMs and post—trauma lung injury, the H_2O_2 produced by PAMs and catalase activity of bronchoalveolar lavage fluid (BALF) and lung homogenate were measured at hours 6、12、24、48 and 72 after burn、blast injury and burn—blast combined injury in 128 rats, respectively. After trauma, H_2O_2 produced by PAMs was increased compared with PAMs from control lungs, especially in the combined injury groups. The catalase activity of BALF and lung homogenate decreased. The catalase activity in combined injured lungs was the lowest. The results indicated 1. the activation of PAMs might play a role in post—trauma lung injury: 2. the damage of pulmonary antioxidant system after trauma may enhanced the lung injury; 3. the state of PAMs activation and the damage of pulmonary antioxidant system were related to the severity of trauma.

OBJECTIVE：To study the secretion of catecholamine primary cultures of chromaffin cells from rat adrenal medulla were used.METHOD:Catechoalmines(norepinephrine,epinephrine and dopamine) were measured by high-performance liquid chromatography-electrochemical detection technique.RESULTS:Catecholamine released by chromaffin cells with in 20min without slimalus was (73.29±15.32) ng/106 cells.When acetylcholine,nicotine or muscarine was added,the secretion of catecholamine was then increased.CONCLUSION:Using high-performance liquid chromatography-electrochemical detection technique,we can detect sensitively catecholamine released by cultured rat chromaffin cells.

lymphocyte,and especially the small lymphocytes were moreheavily labeled than the larger ones,and the Con A receptor of NK cell exhibitedpolarization along the cell surface.These results suggest that:1.the extent of ConA receptors was related to the functional activities of the ceils,the more active thecell is,the more the Con A receptors will be;2.the receptors of Con A wereprobably related to the cell recognition,for instance,on the NK cell Con A rece-ptors showed polar distribution;3.the number of receptors of Con A was dependenton the cell differentiation,the more mature the cell is,the more the Con Areceptors are.

Objective To observe two main subtypes of MAPK family-ERK and JNK activation in HSCs and investigate the effects of the serum of Radix Salviae Militiorrhizae treated animals on the activation of ERK and JNK in HSCs. Methods HSCs were cultured in vitro. After the model of hepatic fibrosis was replicated in SD rats, Radix Salviae Militiorrhizae decoction was given via gastrogavage to the rats of treatment groups to obtain serum containing the drug. The dose was 10 times of dose per kg per day for adults in 2 divided doses for 6 consecutive days, while the same volume of 0.9% NaCl was given to the rats of non-treatment groups. on the 7th day, the routine dose was orally given again; the blood sample was drawn from the vena cava after 2 hour; the serum was isolated and inactivated with water bath at 56℃; finally, the serum was filtered to eliminate bacteria. Just before using the serum, RPMI-1640 culture medium was added to prepare culture media of 10% drug-containing serum, which was incubated with the subcultured HSCs. The experiment was divided into the following groups: A: serum of extracted from normal rats; B: medicated serum of RSM extracted from normal rats; C: serum from CCl_4-induced liver fibrosis rats; D: medicated serum of RSM extracted from CCl_4-induced liver fibrosis rats.After 24h incubation with above every group serum which were added blindly to HSCs, P-ERK and P-JNK were detected by Western blot respectively. Results Both RSM Pharmacological serums decreased P-ERK and P-JNK in HSCs significantly compared with controls (P

0.05. CONCLUSIONS Not premixed bacteria fluid groups don't affect the antibiotic susceptibility test of VITEK2 Compact.

Objective To investigate whether pharmacological serum from the rats taking radix salviae miltiorrhizae (RSM) can inhibit increase of intracellular free calcium level in hepatic stellate cells (HSCs). Methods A total of 32 healthy SD rats were divided into 4 groups. Two groups were modeled into hepatic fibrosis by 40% CCl 4 injection subcutaneously for 9 weeks and RSM were filled into the stomachs of one group (group A) but the same volume of saline into the other group (group B) twice a day for 6 d. Another two groups were only filled with RSM (group C) and saline (group D) for 6 d without modeling into hepatic fibrosis. The pharmacological serum was drawn from the inferior vena cava at 2 h after the last time of RSM or saline and used to culture HSCs at the concentration of 10% for 24 h. After HSCs were loaded with Fluo-3/AM, the effects of RSM on [Ca 2+ ] i with laser scanning confocal microscopy were examined before and after angiotensin Ⅱ treatment. Results In the activated HSCs of groups A and C, [Ca 2+ ] i decreased significantly as compared with groups B and D (P

The effects of the Biological Suppressor of Cancer(BSG)on human normal hone marrow cells and leukaemic cells were studied.There are some evidences that the BSC possesses a biological activities which apparently kill leukaemic cells and inhibit their DNA synthesis,but it has no such effects on erythroblast.The BSC extracted from ascites of ascitic tumors shows no cancer lines specificity,nor tissue specificity.

Objective To study the effect of sanguinarine on the growth and radiosensitivity of ovarian cancer SK-OV-3 cells.Methods Cell growth was determined by MTT and clonogenic assay.Cell cycle analysis was performed by flow cytometry assay.The cell apoptosis was analyzed by Annexin V/PI assay.Results Sanguinarine inhibited SK-OV-3 cell growth in a dose-and time-dependent fashion and its IC50 values were 3.02 and 1.11 μmol/L at 24 and 48 h,respectively. Sanguinarine also significantly triggered a sub-G1 peak,an indicator of apoptosis,and caused a G0/G1 arrest.Furthermore,the cell apoptosis induced by X-irradiation was significantly increased at 6 Gy when the cells were pre-treated with sanguinarine,in which the early apoptotic population increased from 10.28％ to 43.28％ (t =19.41,P ＜0.01 ) and the late apoptotic population increased from 20.26％ to 30.80％ ( t =8.78,P ＜ 0.01 ).The multi-target click model was used to fit survival curves and the SER of sanguinarine treatment approached to 1.625 at the dose of D0. Conclusions Sanguinarine could inhibit SK-OV-3 cell growth by inducing apoptosis and cell cycle arrest and enhance cell radiosensitivity at low doses.

In order to observe the effects of the supernatant of WEHI-3 cell culture which contains IL-3 (interleukin 3), we have Performed some experiments by adding WEHI-3 supernatant to murine bone marrow cells culture. Cell culture of six days shows that the supernatant of WEHI-3 can promote adherence and proliferation of the stromal cells. There are 1.334?10~6 stromal cells/L in the culture which contained 20% WEHI-3 supernatant. Four kinds of stromal cells can be identified under both light microscope and SEM. Fibroblast-like cells which tend to be spindle-shaped with many filament-like and microvilli-like dendrites on the cell surface; Riticular-like cells which are irregular with some folds on the dendrites surface occasionally; Macrophage-like cells which are round with many phagocytic granules in the cytoplasm, and are characterized by positive ANAE staining, and many lamina-like folds and long filament-like dendrites on the cell sufrace; Fat cells are few in number, the cell body is ovoid with lipid droplet, and show strong cytoplasmic staining for Sudan black B, the cell surface is smooth. At the same time we have also observed the close contact between the hematopoietic cells and the stromal cells. In the culture without WEHI-3 supernatant, we have found few small adhered cells with less cytoplasm and weak enzyme activaties under light microscope, and with atrophied cell body and flat surface under SEM. The cell count of the stromal cells in normal culture is 58.83/mm~2. The results showed that WEHI-3 supernatant can promote the growth and proliferation of the stromal cells of murine bone marrow with some histochemical changes.

AIM: To develop an HPLC method for determintion of alliin concentration in rat plasma and to study its pharmacokinetics in rat. METHODS : The plasma samples were extracted with methanol. The analysis involved a ODS-1 column as stationary phase and distilled water as mobile phase. The flow rate was 0.5mL?min -1 ,UV detection wavelength was at 220nm. 5-fluorouracil was used as the internal standard. RESULTS : The calibration curve was linear over the range from 3?g?mL -1 to 75?g?mL -1 with a correlation coefficient of 0.9989 . The mean recovery was 95%. The RSD of within-day and between-day were all less than 5%. The HPLC method of determination of alliin in the plasma was established. After single dose of 300mg?mL -1 in 6 rat,the main pharmacokinetic parameters were estimated to be as follows: CL( 0.048 )mg?min -1 ?kg -1 ,K_ 12 ( 0.0071 )min -1 ,K_ 21 ( 0.0093 )min -1 ,K_a(0.1915)min -1 ,t_ 1/2? ( 26.85 )min -1 ,t_ 1/2? ( 131.15 )min -1 , AUC( 6228.48 )?g?min -1 ?mL -1 . CONCLUSION : This method is quick,precise and reliable. It is shown that alliin is absorbed quickly in rat.