Based on an xperimental study of multi-media web-based teaching method of college English,this peper discusses a new pedagogy-how to utillze multi-media technology in college English teaching,in the ligth of features of multi-media teaching,experimental process and the evaluation of the experiment..

Objective To investigate the association of uric acid,bilirubin and hs-CRP with coronary lesion.Methods Four hundred and twenty nine patients who had underdone coronary angioplasty and completed clinical examination of TG,TC,LDL-C,HDL-C,BUN and SCr were divided into the normal vessel group,scleratheroma group(coronary stenosis

Objective To identify the correlated factors of chronic hypercapnia in patients with obstructive sleep apnea-hypopnea syndrome(OSAHS).Methods The study cohort consisted 56 patients with OSAHS.They were taken arterial blood gas analysis and pulmonary function tests.They were divided into two groups,hypercapnic(PaCO_2≥45 mm Hg)and normocapnic(PaCO_2

Objndve To evaluate the protective effects of specific antagonists of angiotensin II receptor losartan on the kidneys of diabetic rats and study their mechanisms. Methods Changes of urinary albumin, ?2-m excretion, creatinine clearance(Ccr), NO, ET level of plasma, urine and renal tissue, serum and urinary TGF-?1 concentration and mean glomerular volume were measured. Results Losartan could correct elevated urinary albumin, ?2-m excretion, Ccr and mean glomerular volume. Urinary and renal tissue NO, ET concentration decreased after diabetic rats received losartan. Large doses of losartan also reduced urinary TGF-?1 level. Conclusion Losartan can protect the kidney of diabetic rats and the decrease of NO, ET, TGF-?1 concentration in renal tissue may be a mechanism for this action.

Objective To investigate the effect of hawthorn leaf flavonoids (HLFs) with the different concentrations in prevention of high blood lipids and fatty liver in quails. Methods Sixty quails were divided into six groups:normal (N),high lipids food model (M),positive control (ZBT),HLF1,HLF2 and HLF3 groups.The animals in the N group were fed with normal food,while the M group was feed with high lipids food to establish the animal model of fatty liver.Besides high-fat diet,HLF1,HLF2 and HLF3 groups were also fed with 1 mL HLFs in the doses of 20 mg/kg,40 mg/kg and 80 mg/kg respectively.The ZBT group was fed with 1 g/kg of ZhiBiTuo and used as the positive control.After the experiments of six months,the serum and liver of the quails were taken and used to evaluate the contents of total cholesterol (TC),triglyceride (TG),high density lipid cholesterol(HDL-C),low density lipid cholesterol (LDL-C),superoxide dismutase (SOD),malondialdehyde (MDA),glutathione (GSH),alanine amino transferase (ALT) and glutamic oxaloacetic transaminase (AST).Meanwhile,the microscopic and electronic microscopic sections were used to observe the pathological changes of the livers of the quails. Results Compared with the M group,HLFs significantly lowered the content of TC,TG,LDL-C,MDA,AST and ALT in the serum and livers of the quails in other groups (P<0.001).However,the levels of HDL-C,SOD and GSH of the other groups were increased markedly (P<0.001).Moreover,the ratios of increase/decrease in the three HLF groups were depended on the concentrations of HLFs.Also,better liver structure and less lipid accumulation were also observed in the HLF groups when compared to the M group. Conclusions These results showed HLFs can lower blood lipid and cholesterol accumulation,improve the antioxidant capacity and protect the physiological function of liver.So,HLFs were effective in preventing and treating high blood lipids and fatty liver induced by high-fat diet.

Objective To understand the vibrio vulnificus pollution condition in marine products in Zhuhai region and the drug resistance situation to provide the basis for further study of vibrio vulnificus and clinical medication .Methods 89 samples were col-lected from the marine products wholesale market ,pedlars′market and supermarkets in Zhuhai region and the method published by the US Food and Drug Administration (FDA) was adopted to perform the qualitative detection of vibrio vulnificus .The identifica-tion of bacteria and the drug sensitivity test were performed by using the ATB instrument .Results In 89 samples of marine prod-ucts ,vibrio vulnificus was detected in 39 samples ,the total positive rate was 43 .82% .The detection rate of oyster was as high as 60 .87% (28/46) ,followed by marine fish (39 .13% ,9/23) and marine shrimp (20 .00% ,2/10) .The drug sensitive test showed that vibrio vulnificus had the resistant strains to cephalosporins and aminoglycoside drugs .Conclusion The seafood vibrio vulnificus pollution in Zhuhai region can not be ignored .The monitoring of vibrio vulnificus in the marine products and the drug resistance a-nalysis should be strengthened for effectively preventing the outbreak of vibrio vulnificus .

Purpose To investigate the expression of gelsolin-like actin-capping protein (CapG) in gastric cancer and adjacent normal gastric tissues and its relationship with clinicopathological features and prognosis.Methods The immunohistochemical (IHC) assay was performed to detect the expression of CapG protein in 125 specimens of gastric cancer (study group) and 30 specimens of matched adjacent normal gastric tissues (control group).No patients had received chemotherapy or radiotherapy before surgery.Immunostaining was scored semiquantitatively by two independent observers who were blinded to the patients' outcome and other clinicopathological parameters.The correlation of the expression of CapG with clinicopathological characteristics and prognosis was analyzed.Results Cytoplasmic and nuclear CapG protein staining was detected in all gastric cancer tissues.CapG protein expression was absent or low in matched adjacent normal gastric tissues but significantly higher in gastric cancer tissues.Expression of CapG in the tumor was not significantly associated with gender,age,tumor size,tumor location (P ＞ 0.05).However,elevated CapG expression was strongly correlated with the depth of invasion (P =0.044),lymph node metastasis (P =0.026),distant metastasis (P =0.001),and AJCC stage (P =0.012).Significant poorer overall survival was observed in the high CapG expression group compared with that of the low CapG expression group (P ＜0.001).Multivariate analysis showed overall survival correlated with the patients' tumor location,lymph node metastasis,distant metastasis,AJCC stage and the expression of CapG protein.Conclusion CapG is highly expressed in gastric cancer.Tumors with CapG up-regulation tend to have poorer prognosis,suggesting overexpression of CapG may contribute to the prediction of poorer prognosis and may be a potential therapeutic target for gastric cancer.

OBJECTIVEThe biological safety of a new developed silicone rubber for inflatable silastic prosthesis (SRISP) was evaluated.

METHODSFollowing the GB/T 16886.10-2005 standard, YY/T 0127.13-2009 standard, and GB/T 16886.11- 2011 standard, samples were prepared and tested by animal experiments, such as guinea pig maximization test, oral mucous membrane irritation test, and short-term systemic toxicity test (oral route).

RESULTSNo obvious erythema and edema in the guinea pig abdominal skin were observed after 24, 48, and 72 h of stimulating touch, thus indicating that SRISP does not cause potential skin sensitivity. No local response to SRISP was found, and the visual observation and pathological findings of oral mucosa were normal and similar to that of the control group. Therefore, SRISP had no irritation response to oral mucosa. No clinical signs of toxicity were observed in rats, and no significant differences in weight and weight relative growth rate between extract group and blank control group (P > 0.05) were found. Thus, SRISP had no short-term systemic toxicity.

CONCLUSIONThese results indicated that SRISP met the requirement of biomedical materials and had good bio- security.

Objective To explore the expression of the CENP-W in gliomas and investigate the effects of its invasion. Methods The expression level of the CENP-W in gliomas with varied pathologic grade were detected by immunohistochemical analysis,RealTime PCR,and Western Blotting. U251 cells were transfected with the specific siRNA to repress the CENP-W expression level. The invasion ability of U251 cells were examined by Transwell Chamber assay ,while RAS mRNA and protein levels were detected at the same time. Results The expression levels of the CENP-W in glioma tissues were significantly high and the CENP-W gene could enhance the invasion of U251 cells . The expression of RAS was down-regulated when the expression of CENP-W was repressed. Conclusion The CENP-W has an oncogenic role in human brain gliomas and may regulate the invasion of gliomas by adjusting the RAS signaling pathways.

Objective To evaluate urinary nucleosides determination for the diagnosis of colorectal carcinoma. Methods The concentrations of 14 different urinary nucleosides from 42 colorectal carcinoma patients, 10 patients with villous adenoma and 62 normal adults were determined by high-performance liquid chromatography (HPLC); Principal component analysis was applied to classify colorectal cancer patients and normal adults. Results The levels of Pseu、 C、 m1A、 mU、 m22G、 I、 m1G、 ac4C、 m6A in colorectal carcinoma group were (42.67?21.89)、(0.44?0.51)、(2.72?0.83)、(0.13?0.08)、(1.79?0.55)、(0.50?0.36)、(1.44?0.52)、(0.82?0.30)、(0.07?0.08)nmol/(?mol creatinine) respectively, which were much higher than those in normal adults (P