Objective To study the role of bacterial collagenase in wound healing with observing capillary neovascularization, epidermis regeneration and collagen fiber reparation in vivo. Method A total of 28 New Zealand rabbits were made into models of superficial soft tissue trauma and divided into two groups. In the experimental group, the right limbs of rabbits were traumatized intentionally in the same length and depth, and their wounds were treated with bacterial collagenase liquor 133 MIU/mL, and the wounds were sutured. Similarly, in the control group, the left limbs of the rabbits were modeled in the same way and their wounds were managed with physiological saline instead and closed. Their wounds were observed continually 1, 2, 3, 5, 7, 10 and 14 days after traumatized. Data were analyzed statistically by using One-way ANOVA, LSD-test, and Wilcoxon rank test. Results There were no significant differences in capillary neovascularization and epidermis regeneration between two groups ( F = 0.12, P = 0.740 and F = 0.95, P = 0.33, respectively), but significant difference in collagen fiber reparation was found between two groups (F = 6.63, P = 0.01). Conclusions In the progress of wound healing, bacterial collagenase can improve the collagen fiber reparation without effects on the new capillary vasculogenesis and epidermis regeneration. The bacterial collagenase does not play a positive role in wound healing.

[Objective]To ascertain the best formulation process of Tangkening Granule. [Method]By determinating hygroscopicity, granulation and dissolubility, the appropriate recipient and its formula are selected. [Results]The best excipient is 1∶0.5. The made granules have low hygroscopicity and high granulation and high dissolubility. And its critical relative humidity is 70%. [Conclusion]The experimental results provide the basis of the ascertainment of formulation process and the control of product inviroment of Tangkening Granule.

Animals ; Diazepam ; pharmacology ; Drug Antagonism ; Electroencephalography ; Female ; Male ; Pyrazoles ; poisoning ; toxicity ; Rats ; Rats, Sprague-Dawley

Objective To investigate the mechanism of glycoprotein serglycin (SRGN) promoting metastasis of breast cancer cells and the possible mechanism of SRGN expression.Methods Real time quantitative polymerase chain reaction (PCR) and bioinformation retrieval were used to detect the expression of SRGN in lymph node metastasis and non-metastasis breast cancer.MDA-MB-231 shRNA and MCF-7-SRGN of breast cancer stable cell line were established by lentivirus shRNA interferencc and overexpression.Transwell assay was used to test the effect of SRGN on invasion and metastasis of breast cancer cell line in vitro.Western blot assay was used to detect the changes of epithelial-mesenchymal (EMT) related markers.The possible regulatory mechanism of SRGN expression was detected by Western blot assay.Results SRGN expression was significantly increased in lymph node metastasis of breast cancer in clinical specimens.SRGN interference inhibited the invasion and metastasis of tumor cells.SRGN promoted breast cancer cells EMT.Transforming growth factor β1 (TGFβ1) promoted the expression of beta SRGN transcription.Conclusions SRGN can induce the change of EMT in breast cancer cells and promote the invasion and metastasis of breast cancer cells.

BACKGROUND: In the researches of Ginkgo Biloba Extract(GBE) in the treatment of cerebra ischemia, because of the application of generally anaesthesia medication that may induce the alteration of cerebral temperature, the accuracy of the results may be affected.OBJECTIVE: To investigate the impact of domestic GBE on antioxidase and lipid peroxide of cerebral ischemic reperfusion tissue as well as the water content of ischemic brain tissue under normothermia.DESIGN: A randomised controlled trial.SETTING and MATERIALS: Study was conducted in the Tongji Medical University of Huazhong Science and Technology University. A total of 24 Wistar rats with a mass from 250 g to 300 g were randomly allocated into sham-operation group ( n = 8 ), cerebral ischemia control group ( n = 8) and cerebral ischemia GBE treatment group( n = 8) . The animal model of normothermia rat with left middle cerebral artery ischemia for 2 hours and reperfusion for 2 hours was prepared with the reference of Nagasawa method in the animals of control group and treatment group for contrast study.INTERVENTIONS: The cerebral temperature of the rats was reflected by the temperature of the temporal muscle. The temperature-measuring probe was embedded into the deep part of the left temporal muscle closed to osseous ectoblast. The temperature was continuously monitored by semiconductor oxide temperature sensor. The temperature of the head was heated with 60 W filament lamp and adjusted by automatic double-controlling craniocerebral cooling instrument to maintain the cerebral temperature at normothermia level of 36.5 ℃ - 37 ℃. The normothermia cerebral ischemic reperfusion injury rat model was established according to the design. GBE injection was injected respectively into abdominal cavity in the rats of cerebral ischemia GBE treatment group at the following time point: 12 hours, 8 hours and 4 hours before operation, immediately after cerebral ischemia and immediately after reperfusion, with 3 mL each time and 5 times in total. Same times and dose of normal saline was injected into the abdominal cavity in the rats of both control group and sham-operation groups.MAIN OUTCOME MEASURES: Superoxide dismutase (SOD), glutathione peroxidase(GSH-Px), reduced glutathione(GSH), malondialdehyde(MDA)and water contents in the cerebral ischemic tissue.RESULTS: The levels of SOD, GSH-Px and GSH in cerebral ischemia control group were(73.35 ± 12. 86) NU/mg, (167.37 ±54.34) μkat/g and (196. 84 ± 22.75) μg/g respectively, which significantly lower than that (96. 02± 16. 83) NU/mg, (338.57±84.02) μkat/g and(337.51± 34. 89) μg/g of sham-operation group( P ＜ 0. 01 or P ＜ 0.05) . The SOD, GSH-Px and GSH levels of cerebral isehemia GBE treatment group were (87.24± 15.03) NU/mg, (316. 56 ±93.52) μkat/g and(263.16±28.54) μg/g, which significantly higher than that of cerebral ischemia control group(P ＜ 0.01 or P ＜ 0.05) .The MDA level of cerebra ischemia control group was (308.34 ± 26.81 ) nmol/g, which significantly higher than that(101.46 ± 10.97) nmol/g of sham-operation group( P ＜ 0.01 ) .The MDA level of cerebral ischemia GBE treatment group was(125.86± 13.90) nmol/g, which was significantly lower than that of sham-operation group ( P ＜ 0.01 ) . The water content of cerebral ischemia control group was(80. 45 ± 0.44)%, which was significantly higher than that (78.20 ± 0. 25 ) % of sham-operation group ( P ＜ 0.01 ) . The water content of cerebral ischemia GBE treatment group was(79.63 ± 0.46) %, which was significantly lower than that of cerebral ischemia control group( P ＜ 0.05).CONCLUSION: Domestic GBE can inhibit the excessive production of free radicals and the lipid peroxidation during cerebral ischemia and reduce cerebral oedema and the destruction of blood-brain barrier to protect cerebral ischemic tissues under cerebral normothermia.

Objective To know the etiology distribution and drug resistance in neonate, hope to provide the reference for clinic.Methods The identification and susceptibility of bacteria were detected by culture.Results 583 bacterial strains were identified from total 560 positive samples from 2127 neonate (25.8%).The infection neonates of single bacterial and complex bacterial were 537 and 23 respectively of all 560 patients.The ratio of staphylococcus aureus, klebsiella pneumoniae and E.coli were 29.5%,22.0% and 17.0% respectively in total 560 patients.Staphylococcus Aureus of Resistance to Vancomycin(VRSA) wasn't be found.Conclusion Respiratory tract infection is the major cause of infection in newborn, including staphylococcus aureus, klebsiella pneumoniae and E.coli.

Objective T To investigate the effect of sirolimus (SRL) on the differentiation,development,and maturation of mice bone marrow-derived dendritic cells (DC),and the synergic effects of them in prolonging survival time of skin allograft.Methods (1) DC of C57BL/6 mice were derived from bone marrow cells upon culture with SRL. The expression of CD11c,CD86 and major histocompatibility complex (MHCⅡ) molecules was assessed with or without lipopolysaccharide (LPS) stimulation by flow cytometry; (2) The capacity of DC administrated by SRL to stimulate allogeneic T lymphocyte proliferation was examined by mixed lymphocyte culture (MLR); (3) A skin transplantation model was established with the recipients BALB/c mice and the donor C57BL/6 mice. Recipients were divided into control group (there was no administration before skin transplantation),immature DC group (injection of donor C57BL/6 mice immature dendritic cells 2?10 6 via tail vein before skin transplantation),SRL group (receiving oral SRL 3 mg/kg every day for 7 days before skin transplantation),combined group (receiving an injection of donor C57BL/6 mice immature DC via tail vein and of oral SRL before skin transplantation),and isogeneic group (in which the donors and recipients were both BALB/c mice and there was no administration before skin transplantation). Survival time and histological changes of skin allograft were observed in different groups.Results (1) CD11c expression on the DC in the presence of SRL was slightly decreased,but CD86 and MHCⅡ molecules significantly decreased,and SRL treatment could resist the stimulation of LPS; (2) MLR revealed that DC administrated by SRL could inhibit allogeneic T lymphocyte proliferation; (3) SRL treatment in combination with donor immature DC before transplantation could alleviate inflammation and prolong survival time of skin allograft in mice.Conclusions SRL does not alter differentiation but inhibit the maturation of DC. Sirolimus can cooperate with immature DC to prolong survival time of skin allograft in mice.

OBJECTIVE:To investigate the effects of Yinzhihuang oral solution on immunological liver injury (ILI). METHODS:Male mice were randomly divided into blank group (normal saline), model group (normal saline), bifendate group(150 mg?kg-1),high dosage group (Yinzhihuang oral solution 30 mL?kg-1), medium dosage group (Yinzhihuang oral solution 20 mL?kg-1) and low dosage group (Yinzhihuang oral solution 10 mL?kg-1). All rats were given medicine via i.g. gtt for 10 days. ILI model was induced by intravenous injection of bacillus calmette-guerin vaccine (BCG) and lipopolysaccharides (LPS). The content of IL-6 and TNF-? were detected by ELISA. The levels of ALT, AST, MDA and SOD were detected by spectrophotometer. RESULTS:Compared with model group, the level of ALT, AST, MDA, IL-6 and TNF-? were decreased significantly in high dosage, medium dose and low dosage groups (P

Purpose: To evaluate the effect of radiotherapy and to detect the prognostic factors for residual and recurrent foci after surgery of thyroid gland cancers. Materials and Methods: 109 patients with residual or recurrent foci of thyroid cancers after surgery were treated with radiotherapy. Results:The overall 5-,10-, 15-, 20- and 25- year survival rates were 93.6%, 91.7% , 88.7%, 87.6% and 87.6% and the 5-, 10-, 15-, 20- and 25- year survival rates with no evidence of disease were 90.8%, 89.8% ,85.6%, 84.1% and 84.1%, respectively. The clinical stage was the main factor and patient's age at diagnosis, patient's sex, histopathological types and radiation dose were also the prognostic factors. Conclusion:Radiotherapy is beneficial to residual and recurrent foci after surgery of thyroid cancer. The optimum radiation dose is 45～65 Gy.