Objective To investigate the effects of silymarin on expressions of nuclear factor kappa B(NF-?B) and intercellular adhesion molecule-1(ICAM-1) in the kidneys of rats with unilateral ureteral obstruction(UUO)-induced renal fibrosis.Methods Seventy-two male Sprague-Dawley rats were randomly divided into 3 groups: sham-operated group(n=24),operated group(n=24) and silymarin treated group(n=24).Renal tubulointerstitial fibrosis model was established via UUO.Silymarin was given by gavage with 30 mg/(kg?d) in silymarin treated group,and the same volume normal saline was given by gavage in operated group and sham-operated group.In each group,8 rats were killed at 7,14 and 21 d after operation.Histological changes were observed in tubulointerstitial injury under microscope.The expressions of NF-?B and ICAM-1 in renal tissue were determined with immunohistochemical method.Results Tubuloin-terstitial injury scores in operated group at 7,14 and 21 d were 1.168?0.108,1.776?0.064 and 2.301?0.157,respectively,and Tubulointerstitial injury scores in the treated group at 7,14 and 21 d were 1.043?0.114,1.677?0.083 and 2.084?0.201,respectively.Tubulointerstitial injury scores in silymarin treated group were significantly lower than those in operated group(Pa

Objective To investigate the protective effects and mechanism of shenmai injection(SMI) on cardiomyocytes injured by hydrogen peroxide(H 2O 2) or angiotension Ⅱ(AngⅡ). Methods According to the different concentrations of H 2O 2, AngⅡ,SMI,Vitamin C(VitC) added into the cardiomyocytes culture media(CCM), the cultures were divided into 15 groups. Lactate dehydrogenase(LDH ),malondialdehyde(MDA),superoxide dismutase (SOD) of CCM and cardiomyocytes viability(CMV), Na +-K +-ATPase,Ca 2+-ATPase?cardiomyocytes apoptosis rate(CMAR) ,nitrogen oxide(NO), nitrogen oxide synthesis enzyme(NOS),eNOS expression of cardiomyocytes were detected respectively .Results H 2O 2 or AngⅡ could decrease CMV, SOD, Na +-K +-ATPase,Ca 2+-ATPase,NOS,NO,eNOS expression and increase CMAR,LDH and MDA.SMI could lessen the changes of the items mentioned above ,which were caused by H 2O 2 or AngⅡ.The effects of SMI 10 ml/L were stronger than those of SMI 5 ml/L or VitC 50 mg/L.Conclusion SMI has a significant protective effect on cardiomyocyte injured by H 2O 2 or AngⅡ.

In the present study, the antibacterial spectrum of turmeric extract was analyzed by measuring the minimum inhibitory concentration (MIC), and the antibacterial mechanism of turmeric extract was elaborated by determining its effects on the permeability and integrity of the cytoplasmic membrane, energy metabolism, and the morphology of the tested bacteria (Bacillus subtilis) with the highest susceptibility to the extract. The results showed that turmeric extract possessed broad-spectrum antibacterial activity against Gram-positive, Gram-negative bacteria and fungi, especially against Bacillus subtilis, with the MIC of 0.5 mg·mL^-1. Turmeric extract disrupted the liposome membrane and released calcein encapsulated within it. The permeability of the bacterial cell membrane was increased, leading to leakage of intracellular K⁺, Ca²⁺and cell wall proteins, and the integrity of the cell membrane was broken down, causing leakage of intracellular proteins and polysaccharides. Scanning electron microscope observation confirmed that the bacteria treated with turmeric extract was severely deformed. Simultaneously, cellular energy metabolism was affected, resulting in a significant reduction in the intracellular ATP content and ATPase activity in bacteria. In summary, the antibacterial mode of turmeric extract is closely related to its disruption of bacterial membrane structure.

Objective To study the survival time of recombination rival in environment and inactivation ability of different disinfectant and ultraviolet radiation against virus. Methods NC membranes absorbed the recombinant adenovirus (rADV) or herpes simplex vires (rHSV) with green fluorescence protein (GFP) were laid, or immersed in various concentration of different disinfectants such as ethanol, sodium hypochlorite, lysol and geramine and then taked out them every 15 min, or exposed under ultraviolet radiation, then the NC membranes were adsorbed 1 h in cell, 37 ℃ 5 % CO248 h. The results were observed under the fluorescence microscope. Results (1) the average survival time of rHSV under environment is less than 60 min, rADV is almost up to 2 h. (2) The infection ability of rHSV and rADV was inactived 15 min by both ethanol(100%, 70% and 50%) and sodium hypochlorite (5%, 2.5% and 1.25%). (3) Two virus can be killed by 0.1% bromngeramine. (4) Both 5% and 2.5% lysol, but rADV can not lost the infection on Vero Cell until 75 min by 1.25% Lysol. (5) The rHSV was inactivated under ultraviolet radiation, but rADV was not. Conclusion The survival time of is different from beth envelope rival and the no-envelope viral under nature environment and the inactivate ability of disinfectant also is different between two model virus; Disinfectant should be choose according to virus type.

Objective To investigate the phenomenon of accidental splashes and sprays from manipulation of recombinant virus material and to measure the approximate spilled distance when recombinant virus material inadveaenfly dropped in the biosafety laboratory.Methods first,two groups owning different experience simulated the course of accidental spills and splashes by recombinant adenovirus(rADV)which expressed green fluorescence protein(GFP),the GFP signal were observed in 96 well cell plate after spills appeared;Second,the routine two heishts(75 cm and 110 cm)and capacity(1 ml,1.5 ml,4 ml and 8 ml)of virus were chose to simulate the experiment of unexpected dropping.Results First,the positive quantity of the first group owning 5 years'experience is much less than the second group owning 2 years'work experience,the former was 7 positive wells,the latter was 81 positive when they used the pipette to operation.Second,when the unclosed test tubes(1 ml,1.5ml,4 ml and 8 ml recombinant virus)inadvertently dropped,the largest spill distance Was 0.92 m、1.57 m、2.63 mand 2.68 m respectively.Conclusion The better experience is important to make sure safety when we make infectious material;the contaminated distance increased with the amount of recombinant virus material.

OBJECTIVETo investigate the morphological features and immunophenotype of unspecified peripheral T cell lymphoma with distinct lymphoid follicular growth pattern.

METHODSThree cases of peripheral T cell lymphoma with special pathohistological features were collected. Morphologic analysis and immunohistochemical staining for CD3, CD45RO, CD43, CD20, CD79a, cyclinD1, bcl-2, CD4, CD8 and S-100 were performed. PCR was used to study TCR gamma gene rearrangements.

RESULTSThe main symptoms of all the three patients with the primary sites of cervix and lower jaw. There were intermittent fever and skin rashes in the course of the disease. Morphological study showed lymphoid follicular reactive hyperplasia, mantle zone disappear, prominent infiltration of marginal zones by medium-sized tumor cells with clear cytoplasm and significant nuclear atypia. The immunophenotypic profile confirmed that they were T cell lymphomas. TCR gamma gene rearrangements were found in all the three patients.

CONCLUSIONIn some unspecified peripheral T cell lymphomas, the distinct follicular growth pattern and incomplete effacement of the lymph node architecture make it necessary to differentiate them from reactive hyperplasia, marginal zone B cell lymphoma, follicular B cell lymphoma and mantle cell lymphoma.

Adult ; Antigens, CD ; analysis ; Cyclin D1 ; analysis ; Female ; Gene Rearrangement ; Genes, T-Cell Receptor ; genetics ; Humans ; Immunohistochemistry ; Jurkat Cells ; Lymph Nodes ; metabolism ; pathology ; Lymphoma, T-Cell, Peripheral ; genetics ; metabolism ; pathology ; Male ; Proto-Oncogene Proteins c-bcl-2 ; analysis ; Retrospective Studies ; S100 Proteins ; analysis

Coronary Vessel Anomalies ; diagnosis ; Electrocardiography ; Humans ; Infant ; Pulmonary Artery ; abnormalities

OBJECTIVETo study the bone state with ultimate stress by examining biomechanical distribution of upper femur in Chinese, in order to accumulate more experiences for clinical work.

METHODSTotally 60 Chinese femurs from fresh cadavers were randomly divided into two groups. All the femurs were cleaned, and the body age ranged from 36 to 72 years old, averaged 56.4 years, including 41 from males, and 19 from females. These two groups underwent mechanical stress and bending stress tests. Special mechanical laboratory and machines were used to get the information. Results about the loading value at each testing point under stress were collected.

RESULTSThe four faces of the upper femur suffered different stress under external forces. The bone on upper femur can tolerate more mechanical stress than bending stress. Medial and lateral region of the femur neck and the rear side of the small tuberosity section were themain position enduring the vertical stress. The rear position of the base femur neck and the small tuberosity section were the main regions enduring the bending stress. Those main positions had strong cancellous bones. The intertrochanteric fracture fixation and artificial femoral stems were designed depending on this biomechanical basis.

CONCLUSIONAccording to our experiment result, doctors need to chose more effective fixations for upper femur fracture, and femoral stems for the patients. More information should be collected by further researches.

Adult ; Aged ; Biomechanical Phenomena ; Female ; Femur ; chemistry ; Humans ; Male ; Middle Aged ; Stress, Mechanical

The prevention of occupational exposure to HIV has been carried out in China for many years, and achieved remarkable results. However, the practice of preventive drugs among people with non occupational exposure has many difficulties. Although the high-risk groups show high willingness and demand, their awareness of the preventive drugs is low due to the fear of increasing unprotected sex after the use of the drug. Other factors negatively affecting the application of the drugs are the cost and the side effects. In order to provide preventive treatment on time for the high-risk groups, the awareness of non occupational exposure prophylaxis should be raised.

Objective:To investigate the inhibitory effect of in vivo non-targeting transfection of recombinant fibronectin polypeptide CH50 against tumors and to study the related mechanisms.Methods:After inoculated with tumor cells, BALB/c mice were injected with CH50 plasmids,control plasmids,and normal saline separately.The growth of the tumor was observed;the expression of genes (such as B7-1,B7-H1 etc.) in tumor tissues was detected by RT-PCR;and the count of T lymphocytes in local tumor tissues was analyzed by flow cytometry.Results:The tumor growth was obviously suppressed by in vivo CH50 expression.The expression of genes (B7-1 and B7-H1) was up-regulated along with the growth of tumor.CH50 increased the ratios of B7-1/B7-H1 and B7-1/B7-DC and suppressed the up-regulation of IL-10 and TGF-?genes.The direct action of CH50 on H22 cells resulted in the down-regulatoin of TGF-?gene.The count of T lymphoeytes in tumor tissues of CH50 treatment group was significantly higher than that in other groups.Conclusion:Ex- pression of CH50 by non-targeting transfection can effectively inhibit the growth of tumor;the regulation of the immuno- regulatory genes in tumor mieroenvironment is an important part of the treatment mechanism of CH50.