Adult ; Aged ; Erythrocyte Indices ; Hemorheology ; Humans ; Male ; Middle Aged ; Silicosis ; blood

Objective To study the expression and significance of ?-catenin in keratosic dermatosis and non-melanocytic skin tumors. Methods ?-catenin expression was determined in 10 specimens of normal skin,10 cases of seborrheic keratosis(SK),26 cases of actinic keratosis(AK),17 cases of Bowen's disease(BD) and 35 cases of primary cutaneous squamous cell carcinoma(SCC) by immunohistochemical EnVision two-step staining method. Results The expression of ?-catenin was significantly higher in SK,AK,BD and SCC than in normal skin(P0.05),but that was significantly lower in SK and AK than in BD(P0.05). Conclusion The cytoplasmic and/or nuclear expression of ?-catenin may play a role in the progression from normal skin to keratosic dermatosis and non-melanocytic skin tumors.

Adolescent ; Adult ; Female ; Health Education ; Health Knowledge, Attitudes, Practice ; Health Services Needs and Demand ; statistics & numerical data ; Humans ; Male ; Middle Aged ; Occupational Health ; statistics & numerical data ; Rural Population ; statistics & numerical data ; Surveys and Questionnaires ; Transients and Migrants ; statistics & numerical data ; Young Adult

Inservice Training ; Occupational Health Services ; organization & administration

Humans ; Occupational Health ; Workplace ; statistics & numerical data

Coprinus comatus cultivated on cotton seed hull medium decomposed lignocellulose straggly and was high of absolute biological efficiency. Lignocellulose is the main carbon source for the fruiting stage of the fungus. There existed the positive correlation between the degradation rates of the cellulose and hemicellulose in the medium and the activities of extracellular CMCase (carboxymenthelcel lulase), FPase (filter paper cellulase) and HCase (hemicellu-lase), there also existed the positive correlation between the degradation rate of the lignin in the medium and the activity of extracellular laccase, but no correlation between the degradatio rate of the lignin in the medium and the activity of peroxidase. The activity of extracellular amylase was comparatively high at mycelial growth stage, and the protease activity peek was at teh time when the fruitbody matured.

Objective To study the influence of electro-acupuncture(EA)at Zusanli points(足三里穴) on the apoptosis of thymocytes in rats with abdominal infection and its mechanism.Methods A total of 40 Sprague-Dawley(SD)rats were randomly divided into four groups,including normal control group,model group,non-acupoint group and Zusanli group.The abdominal infection model of rat was made by cecal ligation and puncture(CLP).After abdominal cavity infection for 36 hours,the apoptosis of thymocytes was observed under electron microscope and light microscope,and the apoptosis ratio of thymocytes was determined by Annexin V-PI method with flow cytometry technique.The content of Bcl-2 protein of thymocytes and concentration of corticosterone in plasma were determined.Results Abdominal infection resulted from CLP could significantly increase the apoptosis of thymocytes and lead to the typical histopathological changes of apoptosis of thymocytes under electron microscope and light microscope.Apoptosis ratios of thyrnocytes in model group[(44.7?3.3)%],non-acupoint group[(42.7?3.0)%]and Zusanli group[(32.6?3.3)%] were significantly higher than the ratio in the control group[(21.2?2.3)%,all P0.05).Abdominal infection resulted from CLP also could reduce the content of Bcl-2 protein of thymocytes.The content of Bcl-2 protein of thymocytes in model group(71.2?5.6),non-acupoint group(73.5?5.9)and Zusanli group(82.4?6.8) were significantly lower than normal control group(95.3?6.3,all P

Background and purpose:Chemotherapy plays an important role in the treatment of breast carcinoma by inhibiting the tumor growth and inducing the apoptosis.MAPK transduction pathway is closely related to proliferation and apoptosis of varieties of tumor cells,inhibition of MAPK pathway may increase the efficiency and decrease the toxicity of chemotherapy.Our study was to investigate the effect of MEK inhibitor PD98059 in response of breast cancer cell lines to Epirubicin.Methods:Human breast cancer cell lines MCF-7 and MCF-7/ADR were used as cell models.Epirubicin(EADM),PD98059(inhibitor of MAPK Kinase-MEK),or EADM+PD98059 was added into the culture medium,the expression of MEK2 and p-ERK were measured by Western blot,the growth of the two cell lines were measured by MTT.Results:ERK activity was elevated in MCF-7 after the treatment of EADM,the cells were more sensitive to EADM if combined with PD98059,while in MCF-7/ADR,ERK activity kept unchanged after EADM treatment,and PD98059 has no effect on the sensitivity of cells to EADM.Conclusion:MAPK signal transduction may be activated in some cells treated by EADM,adding inhibitor of MAPK signal transduction could improve the sensitivity of the cells to EADM.

Objective To assess the various features of Budd-Chiari syndrome(BCS)on three- dimensional contrast-enhanced magnetic resonance angiography(3D CE MRA)and to evaluate the potential value of this new technique.Methods Thirty-three patients with BCS underwent 3D CE MRA examination. In 23 cases,BCS was secondary to hepatocellular carcinoma(21 patients)or right adrenal carcinoma (1 patient)or thrombophlebitis(1 patient).Ten patients had primary BCS.The patency of the hepatic veins,inferior vena cava(IVC)and portal veins were assessed.The presence of intra-and extrahepatic collaterals,liver parenchymal abnormalities and porto-systemic varices were evaluated.The diagnosis on 3D CE MRA was correlated with that on inferior vena cavography and right hepatic venography,which were available in 10 and 2 cases respectively.Results Various features of BCS were displayed on 3D CE MRA. Hepatic venous findings included tumor thrombosis(19 patients),tumor compression(2 patients), nonvisualization(4 patients)and focal stenosis(4 patients)of the hepatic veins.IVC findings were severe stenosis or occlusion(10 cases),tumor direct invasion(2 cases),tumor thrombosis(3 cases), thrombophlebitis(1 case)and web formation(3 cases).Intrahepatic collaterals were demonstrated in 9 patients including 2 with "spider web" sign.Detected extrahepatic collaterals included dilated azygos and hemiazygos veins(13 cases)and left renal-inferior phrenic-pericardiophrenic collaterals(2 cases).The occlusion of the left portal vein and the presence of porto-systemic varices were depicted in 2 and 10 patients respectively.Liver parenchymal abnormalities identified by 3D CE MRA consisted of caudate lobe enlargement(7 cases),heterogenous enhancement(18 cases)and associated tumors(18 cases). Compared with inferior vena cavography and hepatic venography,the accuracy of 3D CE MRA in the diagnosis of IVC obstruction or hepatic venous stenosis was 100%.Conclusion 3D CE MRA can display various features of BCS and has the potential to provide an accurate diagnosis.

Objective To investigate the protective effects of simvastatin on cobalt choride ( CoCl2 ) -induced hypoxia and reoxygenation injury on alveolar type Ⅱ cells and the underlying mechanisms.Methods CoCl2 was used to establish the hypoxia and reoxygenation injury model on AT Ⅱ cells.Blank,control and variant doses simvastatin-treated groups ( 5,10,20,30,50,100 μ mol/L) were designed in the present study.The proliferation of AT Ⅱ cells was evaluated by Cell Counting Kit-8 ( CCK-8 ) assay.The percentage of apoptotic cells was assessed by flow cytometry AV/PI double-staining.The protein levels of surfactant protein-C (SP-C) and proliferating cell nuclear antigen (PCNA) in AT Ⅱ cells was determined by Western blot.Results As compared with the control group,pretreatment with low dose (5 - 20 μmol/L),but not high dose simvastatin (50 - 100 μmol/L) markedly reduced A549 cells apoptosis,and increased their proliferation and the protein levels of SPC and PCNAin vitro.The protective effect could be reversed in vitro by L-mevalonate,a simvastatin competitive inhibitor,which indicated that the inhibition of mevalorate pathway was involved in the simvastatin induced AT Ⅱ cells function restoration.Condusion Low doses simvastatin reversed CoCl2-induced hypoxia and reoxygenation injury of AT Ⅱ cells.The inhibition of mevalonate pathway contributed to simvastatin induced AT Ⅱ cells function restoration.