Cell Transformation, Neoplastic ; drug effects ; genetics ; Dimethyl Sulfoxide ; pharmacology ; Electroporation ; methods ; HL-60 Cells ; Humans ; Membrane Proteins ; genetics ; Neoplasm Proteins ; genetics ; RNA Interference ; RNA, Small Interfering ; genetics ; Stromal Interaction Molecule 1 ; Transfection

OBJECTIVETo discuss the protective effect of Mailuoning injection on ischemia/reperfusion (I/R) injury in rats and its mechanism.

METHODHealthy male adult Sprague-Dawley (SD) rats were randomly divided into the sham operation group, the model group, the edaravone (3 mg x kg(-1)) control group, and Mailuoning high, middle and low-dose groups (4, 2, 1 mL x kg(-1)), with 10 rats in each group, and administered with drugs through tail intravenous injection. The middle cerebral artery occlusion (MCAO) was adopted to establish the rat ischemia/reperfusion model. After the ischemia for 2 h and reperfusion for 24 h, the pathological changes in neurovascular units (NVU) of brain tissues at the ischemia side was observed by HE staining. The expressions of glialfibrillary acidic protein (GFAP) and ionized calcium-binding adaptor molecule 1 (Ibal) were detected by the immunohistochemical method. The expressions of tumor necrosis factor-alpha (TNF-alpha), interleukin 1beta (IL-1beta), vascular cell adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1) were detected by the western blotting technique.

RESULTMailuoning injection could significantly improve the pathological changes in cortical penumbra brain tissue UVN of (I/R) rats, reduce the number of GFAP and Ibal positive cells, and significantly decrease the expressions of TNF-alpha, IL-1beta, VCAM-1 and ICAM-1 of brain tissues of I/R rats.

CONCLUSIONMailuoning injection shows an obvious protective effect on UVN of I/R rats. Its mechanism may involve the inhibition of the activation of astrocyte and microglia and the secretion and expression of various inflammatory factors.

Animals ; Brain ; drug effects ; metabolism ; Brain Ischemia ; surgery ; Drugs, Chinese Herbal ; administration & dosage ; Humans ; Infarction, Middle Cerebral Artery ; genetics ; metabolism ; Intercellular Adhesion Molecule-1 ; genetics ; metabolism ; Male ; Protective Agents ; administration & dosage ; Rats ; Rats, Sprague-Dawley ; Reperfusion Injury ; genetics ; metabolism ; prevention & control ; Tumor Necrosis Factor-alpha ; genetics ; metabolism ; Vascular Cell Adhesion Molecule-1 ; genetics ; metabolism

Craniopharyngioma ; surgery ; Endoscopy ; Female ; Humans ; Middle Aged ; Pituitary Neoplasms ; surgery ; Skull Base ; Sphenoid Sinus ; surgery

Background Research showed that transforming growth factor-β2 (TGF-β2) promotes scar formation.But its mechanism in scarring after glaucoma filtration surgery is worthy of studying.Objective This study was to investigate the effect of TGF-β2 on myofibroblast transition of human Tenon fibroblasts (HTFs) and scarring after glaucoma filtration surgery.Methods Tenon capsular tissue was obtained from 3 patients with strabismus during the surgery and was incubated in DMEM with 10％ fetal bovine serum (FBS).The cells were collected and passaged in the free-serum medium for 24 hours,and then 1,2,5,10,20 μg/L TGF-β2 was added into the medium respectively,to induce the transformation of HTFs,and 2 μg/L or 5 μg/L TGF-β2 was used to treat the HTFs for 6,24,48 and 72 hours.The control group was not treated with TGF-β2.The expressions of α-smooth muscle actin (α-SMA) and phosphorylation of the signaling proteins (pSmad2) in HTFs were detected by Western blot assay.The expressions of α-SMA and F-actin were located by cell immunofluorescine technique under the confocal immunofluorescence microscopy.Cell contractility was determined by collagen gel contraction assays.This study was approved by Ethic Committee of Institute of Surgery Research of Daping Hospital,and informed consent was obtained from each patient or custodian initial of the study.Results The expression of α-SMA protein in the HTFs was increased significantly after the treatment of TGF-β2 in comparison with the control group and reached a peak at 24-48 hours.The α-SMA expression was gradually weakened in the 10 μg/L TGF-β2 groups.Little of α-SMA and F-actin were expressed in the control group.However,strong staining for α-SMA and F-actin were observed in the 1,2 and 5 μg/L TGF-β2 groups and then the staining weakened at the concentration of 10 μg/L.In addition,pSmad2 showed a stronger expression in the 2 μg/L TGF-β2 group than that in the PBS group and FBS group,with the strongest expression in 30 minutes through 2 hours.The untreated gel contracted (78.00±3.13)％ from its initial size,and contraction in the 1,2,5,10 μg/L TGF-β2 group were (63.88±1.78)％,(20.69±0.65)％,(19.49-±0.54)％,(16.24±0.84) ％,respectively,TGF-β2 increased HTFs contraction significantly (Fgroup =859.400,P =0.000).Conclusions TGF-β2 can induce transdifferentiation of Tenon fibroblast into myofibroblast and increase cell contractility,with a concentration-dependent and time-dependent pattern to an extent.It may be the mechanism of scar formation after glaucoma filter surgery.

Objective To explore the effect of Okam on airway inflammation in asthmatic mouse.Methods Thirty-two SPF grade Kunming Strain mice were randomly divided into positive control group,glucocorticoid inhalation group,Okam group and negative control group with 8 mice in each group.The mice were sensitized and repeatedly challenged with ovalbumin(OVA) to establish the models of chronic asthma.The glucocorticoid group were given Budesonide(200 ?g) and saline everyday by inhalation,the Okam group were given 50 mg/kg Okam by gavage,and the positive group had saline at the same time,the negative control group received saline at all stages.The inflammation of the lung tissue were scored underwent HE staining.Bronchoalveolar lavage fluid(BALF) cell count and differential were studied,and interferon-?(IFN-?),interleukin-4(IL-4) in BALF were determined by enzyme-linked immunosorbent assay(ELISA).Results There were no inflammatory cell infiltrate of bronchiole in the negative control group.Inflammatory infiltration of lung tissue were obvious in the positive control group.Inflammatory infiltration of lung tissue lightened obviously in the Budesonide and Okam groups.The total cell number,Eosinophils(EOS) and IL-4 level in BALF,and the score of the lung tissue in Okam group were all markedly lower than those in positive control group(t=5.942,7.089,7.078 Pa0.05),IFN-? lower(t=4.275 P

A system analysis about the microbial flora of normal and abnormal soybean sauce liquor from the high-salt-level watery state fermentation was made and the dominant bacteria and yeasts were identified.On the other hand,a discussion of effect of temperature on microbial flora was made.The results indicated that there were no obvious differences about the count of aerobe,spore-producing bacteria,enterobacteriaceae,lactic acid bacteria and anaerobe between the normal and abnormal soybean sauce liquor and there were marked differences about the count of yeasts and salt-tolerant bacteria.The predominant yeasts in normal soybean sauce were Torulopsis and Saccharomyces,accounting for 55.9% and 35.3% of the total yeasts separately,and in abnormal soybean sauce were Pichia,candida and Saccharomyces,accounting for 62.8%,17.9% and 9.0% respectively.

These years with industrial antiseptics and disinfectants widely used, especially unscientifically used, the resistance of microorganisms is more and more serious, which brought much more difficulties to industrial producing. The developments on the resistance of microorganisms to industrial antiseptics and disinfectants, their resistant mechanisms and the control strategies are reviewed, which aids us to reasonably use industrial organic antiseptics and disinfectants in existence and provides academic and scientific basis.

Animals ; Arecoline ; pharmacology ; Cholinergic Agonists ; pharmacology ; Female ; Guinea Pigs ; In Vitro Techniques ; Male ; Muscle Contraction ; drug effects ; Muscle, Smooth ; physiology ; Pyloric Antrum ; physiology ; Receptor, Muscarinic M3 ; metabolism

[ ABSTRACT] AIM:To study the effect of livin gene-modified bone marrow mesenchymal stem cells ( BM-MSCs) transplantation on the cardiac function following acute myocardial infarction in a rat model and the expression of livin , caspase-3, caspase-7 and caspase-9 in the livin gene-modified BM-MSCs.METHODS: The MSCs were obtained by the whole bone marrow culture method , and the apoptosis of the MSCs after infection with adenovirus vector carrying enhanced green fluorescent protein ( EGFP) gene and livin recombinant vector ( rAd-livin) were detected by flow cytometry .The ex-pression of livin, caspase-3, caspase-7 and caspase-9 was detected by Western blot .After permanent left anterior descend-ing artery occlusion , the rats were randomized to receive intramyocardial injection of DMEM without cells ( vehicle group ) , or containing MSCs ( MSCs group ) , MSCs ( EGFP ) ( rAd-control/MSCs group ) or MSCs ( livin ) ( rAd-livin/MSCs group).Left ventricular systolic pressure (LVSP), left ventricular end-diastolic pressure (LVEDP), the maximum in-creased rate of left ventricular pressure ( -dp/dtmax ) and the maximum decline rate of left ventricular pressure ( +dp/dtmax ) were recorded for evaluating the cardiac functions .RESULTS: The apoptosis of rAd-livin/MSCs was significantly decreased as compared with MSCs and rAd-control/MSCs (P<0.05).Meanwhile, the expression of caspase-3, caspase-7 and caspase-9 was significantly downregulated as compared with the other 2 groups ( P<0.05 ) .The cardiac function in rAd-livin/MSCs group was significantly improved as compared with DMEM group , and those in the other 2 groups got the similar results, but the function in rAd-livin/MSCs group was better improved .Meanwhile, the number of surviving cells in rAd-livin/MSCs group was significantly improved as compared with the other 2 groups .CONCLUSION:The apoptosis of MSCs is decreased after rAd-livin transfection, and the expression of caspase-3, caspase-7 and caspase-9 is also significant-ly downregulated while the expression of livin is significantly upregulated .Transplantation of livin-modified BM-MSCs by lentiviral vector results in better prognosis for treating myocardial infarction by enhancing cell survival .

Objective To assess the relationship between cytochrome P450 2C19 (CYP2C19) polymorphisms and effect of the tamoxifen (TAM) in the treatment of beast cancer by performing a meta-analysis.Methods The relevant DataBase were systematically searched for clinical studies on the CYP2C19 polymorphisms of TAM for breast cancer patients.The literatures were screened according to the inclusion and exclusion criteria.Then,the data were extracted and the methodologically quality of included studies were also examined,recurrence-free survival (RFS) as an evaluation indicator.Meta-analysis was carried out by using RevMan 5.3 software from Cochrane Network.Results A total of 8 studies involving 3261 subjects were included.The results of meta-analysis showed that there was no significant difference in CYP2C19 * 2 gene mutation for RFS of breast cancer patients using TAM (OR =1.13,95％ CI:0.92-1.40,P ＞ 0.05),as well as CYP2C19 * 17 (OR =1.22,95％ CI:0.94-1.57,P ＞ 0.05).Conclusion The CYP2C19 polymorphisms might be not associated with the effect of TAM on the breast cancer patients.