Objective To compare the influence of visual endoscope and general laryngoscope under general anesthesia on postoperative sore throat , in order to provide reference for clinical surgery .Methods 320 patients under non-neck and non-throat surgeries were selected .They were randomly divided into the control group and obser-vation group,160 cases in each group.Same intubation was used in both the two groups ,general laryngoscope was used in the control group and visual endoscope was used in the observation group .Clinical indicators and pain score after surgery were compared between the two groups .Results The air pressure,time of anesthesia and operation time in the observation group were similar with the control group ,the differences were not significant (t =0.834,0.943, 1.034,all P>0.05); 2h,24h,48h,96h after surgery,the VAS scores in the observation group were (11.93 ± 2.04)points,(17.44 ±3.27)points,(3.88 ±0.83)points,(1.12 ±0.31)points,the incidence rate of throat bleed-ing within 96h was 7.50%,which were significantly lower than those in the control group [(18.43 ±3.21) points, (22.55 ±4.19)points,(6.33 ±0.64)points,(3.29 ±0.58)points,17.50%],there were significant differences (t=7.493,5.773,4.834,7.231,χ2 =8.221,all P<0.05).Conclusion Intubation with visual endoscope can decrease postoperative sore throat ,which can be a priority for clinical surgery .

In this paper, intelligent control of ultrasonic power during the process of thrombus ablation is realized through the combination of BP Neural Network and the expert system of ultrasonic thrombus ablation. One proper real-time power can be output correspondingly to different treatment circumstance according to expert ruler during the process of treatment.

Objective To investigate the expression of TMS1/ASC gene induced by gemcitabine(GEM) in pancreatic carcinoma cell line PANC-1.To study the relationship between cysteine aspartase(caspase-1),nuclear factor-κB(NF-κB) and the expression of TMS1/ASC.Methods The pancreatic carcinoma cell line PANC-1 was cultured in Dnlbecco's modification of Eagle's medium(DMEM).Methyl thiazolyl tetrazolium (MTT)method was used to measure the effect of GEM at different time points(24,48 h)at different concentrations(1,2,4,8,16 μg/ml) on growth of PANC-l.RT-PCR was used to detect the expression of TMS1/ASC mRNA stimulated by medium alone and by GEM(4.27μg/ml)for 24 h and 48 h.Western blot analysis was performed with inhibitory protein of NF-κB multiclonal antibody,caspase-1 multiclonal antibody and β-actin monoclonal antibody to observe the expression of β-actin,caspase-1 and IκBα in GEM group and in the control group.The activation state of caspase-1 and NF-κB was examined.Results GEM inhibited the growth of PANC-1 cells in a concentrationand-time-dependent manners and its half maximal inhibitory concentration(IC50)was 4.27 μg/ml on 24 h.The expression of TMS1/ASC was 0.3 ±0.004 and 0.63 ±0.007 respectively in GEM group while it was 0.1 ±0.001 and 0.21 ± 0.006 in the control group on 24h and 48h.The difference between the 2 groups at the same time point had statistical significance (P ＜ 0.01).Western blot showed that GEM caused the activation of caspase-1.The expression of IκBα had no obvious differencebetween the 2 groups.GEM couldn't induce the activation of NF-κB.Conclusions GEM can inhibit proliferation of PANC-1 cells and induce their apoptosis.The drug sensitivity decreased with prolongation of exposure time.GEM might induce and increase the expression of TMS1/ASC,which might influence the apoptosis of the cells later.The apoptosis of PANC-1 cells induced by GEM is dependent of caspase-1 signaling pathway and independent of NF-κB signaling pathway.

OBJECTIVE To evaluate the drug resistance of Candida isolated from patients' specimen in clinic.METHODS The minimal inhibitory concentration(MIC) test to 243 Candida strains was performed using ATB-Fungus drug susceptibity plate provided by Bio-Merieux.RESULTS The most popular species of Candida in clinic was Candida albicans(64.6%),C.glabrata(14.4%),C.tropicalis(11.1%),C.parapsilosis(5.8%)and C.krusei(4.1%).There was a certain resistance to the 4 kinds of common antifungals including flucytosine,amphotericin B,fluconazole and itraconazole.The resistance status of C.krusei was the most serious,Its resistance rate to 4 kinds of antifungals was 20.0%,50.0%,30.0% and 40.0%,respectively.The drug resistance rate of 5 species of Candida to itraconazole was higher than that to fluconazole.CONCLUSIONS The commonly encountered Candida produce particular resistance to common antifungals,and it is very necessary to detect and control them.

Objective To analyze clinical effects of gastric tube operation for treatment of esophageal cancer in elderly patients and evaluate its clinical efficacy and safety.Methods A total of 171 patients aged 60-72 years with esophageal cancer in our hospital were selected.They were randomly divided into treatment group and control group.Treatment group was treated with gastric tube operation,and control group was traditionally treated with complete replacement of esophagus with stomach.The quality of life,patient satisfaction and safety of operation were evaluated after 3 weeks,6 months and 12 months after operation,respectively.Results The operation for esophageal cancer in 171 patients were successful.At 3 weeks after the operation,the score of life quality in treatment group and control group were both low [(67.3±9.6) vs.(65.3±8.4)],and there were no significant differences between the two groups (P＞0.05).At 6 months and 12 months after operation,the scores of life quality were (89.2±8.3) and (90.3±9.6) in treatment group,and (66.5± 10.4) and (60.5 ± 11.2) in contol group,respectively.There were statistical differences between the two groups after 6 months and 12 months of operation (P＜0.05).The complication rate in treatment group (6.9％) was much lower than that in control group (30.6％),and there were significant differences between the two groups (x2 =18.43,P＜0.01).The patient satisfaction was in no differences between the two groups at 3 weeks after operation (P＞ 0.05),while there were statistically significant differences at 6 and 12 weeks after the operation (P＜0.05).Conclusions Gastric tube operation in treatment of elderly patients with esophageal cancer,can effectively improve the life quality,and prevent the occurrence of postoperative complications,which is worthy of clinical application.

AIM To explore the effects and mechanism of cobra venom serum on the proliferation in HL60 cells. METHODS Established the HL60 cells as a target to study the growth feature by the action of cobra venom serum.The agarose gel electrophoresis and flow cytometry analysis were used to demonstrate apoptosis. RESULTS Compared with the control group, the cells were inhibited significantly by the action of cobra venom serum.A characteristic DNA "ladder" was detected by using agarose gel electrophoresis. By flow cytometry analysis,it was proved that most apoptosis of HL60 cells occurred when cultured with cobra venom serum. CONCLUSION Cobra venom serum inhibited the HL60 cells in vitro , which was related to apoptosis. This may introduce a new way to the treatment of leukemia.

OBJECTIVE To explore the distribution of 16S rRNA methylase and aminoglycoside modifying enzymes in continuous isolates of Pseudomonas aeruginosa(PAE).METHODS The antibiotics susceptibility was tested by K-B method,the 16S rRNA methylase(rmtB) and aminoglycoside modifying enzymes were detected by polymerase chain reaction(PCR),the positive genes were amplified and sequenced by PCR fluorescence spectrophotometry.RESULTS Among 20 strains of PAE,the 16S rRNA methylase and 5 kinds of aminoglycoside modifying enzymes had been detected.The 5 kinds of aminoglycoside modifying enzymes were aac(3)-Ⅱ,aac(6′)-Ⅰb,aac(6′)-Ⅱ,ant(3″)-Ⅰ and ant(2″)-Ⅰ,respectively.And more,the rmtB in the first and third strains was sequenced,and translated into amino acid,and the translated amino acid sequence was compared with GenBank,suggesting there be different amino acid sequence.This was confirmed as two new subtypes.CONCLUSIONS Resistant to antibiotics PAE in our hospital is mainly related to 16S rRNA methylase and 5 aminoglycoside modifying enzymes,and 2 new subtypes of 16S rRNA methylase are discovered.

OBJECTIVE To explore the distribution of ?-lactamase and drug resistant gene mediated by transposon and integron in continuous isolates of Pseudomonas aeruginosa.METHODS The antibiotics susceptibility was tested by K-B method;the ?-lactamase and the outer membrane protein gene oprD2 were detected by polymerase chain reaction(PCR);the genotype of merA encoding Tn21/Tn501 type trandsposon and qacE?1-suI1 encoding Ⅰ type integron was detected by PCR and the positive genes were amplified and sequenced by PCR fluorescence spectrophotometry.RESULTS The TEM type,OXA-2,OXA-10 and CARB of ?-lactamase genes had been detected in 20 strains of P.aeruginosa,but plasmid-mediated ampC enzyme and metallo-?-lactamase had not been detected,the gene oprD2 encoding porins was not detected.The gene merA was detected in 7 strains(35.0%),and the qacE?-sul1 had been detected in 10 strains(50.0%).The gene OXA-2 in the isolate No.2 was sequenced,and translated into amino acid,and the translated amino acid sequence was compared with GenBank,the results indicated that amino acid sequence of OXA in the isolate No.2 was simlar to that in GenBank,exsited 2 different amino acid sequences,so was confirmed as a new subtype.CONCLUSIONS Resistance to ?-lactamase compounds in P.aeruginosa of our hospital is related to TEM,OXA and CARB genes,and integron and transposon contribute to the drug resistance and multidrug resistance in P.aeruginosa.

OBJECTIVE To explore the distribution of related resistance genes of chloramphenicol and tetracycline in Pseudomonas aeruqinosa isolates.METHODS The antibiotics susceptibility was tested by K-B method,catB cmlA,tetA tetB and smr-2 were detected by polymerase chain reaction(PCR),the gene cmlA was sequenced by PCR fluorescence spectrophotometry.RESULTS The drug-resistant rates of 20 strains of P.aeruginosa against 17 kinds of antibiotics ranged from 10.0% to 100.0%,and multidrug resistant strains were found.The gene of cmlA had been detected in 6 strains of 15 resistant P.aeruginosa isolates,but the genes of tetA,tetB and smr had not been detected.The cml was sequenced,and compared with GenBank,the result showed the gene fragment shared 99.0% homology in nucleotides with the GenBank sequences of cmlA7 and cmlA8.CONCLUSIONS Resistance to antibiotics in P.aeruginosa of our hospital is mainly related to cmlA.The resistance to chloramphenicol and tetracycline was not related to tetA,tetB and smr-2.

Objective To detect the expression of HER2 in clinical colon carcinoma tissue ,to investigate its correlation with the clinicopathological characteristics and to analyze its influence on the proliferation and cell cycle in colon carcinoma cell lines .Methods 108 specimens of colon carcinoma and corresponding paracancerous tissues were collected .The hybridization in situ and real-time quantitative polymerase chain reaction were used to detect the HER 2 expression in those specimens .The relationship between HER2 expression and the clinicopathologic features was analyzed .The expression of HER2 in colon carcinoma cells(SW480 and Lo-Vo) was reduced by using the antisense technology .The MTT assay and the flow cytometry were used to investigate the HER2 in-fluences on the cell proliferation and cell cycles .Results The hybridization in situ results showed that the HER2 positive expres-sion rate was 66 .67% in colon carcinoma and 10 .19% in the paracancerous tissues ,the difference between them was statistically significant(P<0 .05) .The real-time fluorescent quantitative PCR results further showed that HER2 was found to be overexpressed in 61 .11% of the colon carcinoma tissue(P<0 .05);the expression of HER2 was gradually increased with the progress of colon cancer .(P<0 .05);the expression of HER2 in the colon tissue with lymph node metastasis was also significantly higher than that without lymph node metastasis in colon carcinoma (P<0 .05);siRNA-HER2 could significantly reduce the expression of HER2 in colon cancer cell lines(SW480 and LoVo) ,the growth of colon carcinoma cell lines was also significantly inhibited and the propor-tion of cells in G0/G1 phase was increased ,while the proportion of cells in S phase and G2/M phase was decreased .Conclusion HER2 is closely related with the occurrence and development of colon carcinoma ,its mechanism could regulate the grow th of colon carcinoma cells via mediating the transition of G1/S phase ,which may provide a new target for the treatment of colon carcinoma .