Worldwide prevalence of Helicobacter pylori(H.pylori) infection is approximately 50%,with the highest being in developing countries.We compared cure rates and tolerability(SE) of second-line anti-H.pylori levofloxacin...Worldwide prevalence of Helicobacter pylori(H.pylori) infection is approximately 50%,with the highest being in developing countries.We compared cure rates and tolerability(SE) of second-line anti-H.pylori levofloxacin/amoxicillin(LA)-based triple regimens vs standard quadruple therapy(QT).An English language literature search was performed up to October 2010.A meta-analysis was performed including randomized clinical trials comparing 7-or 10-d LA with 7-d QT.In total,10 articles and four abstracts were identified.Overall eradication rate in LA was 76.5%(95% CI:64.4%-97.6%).When only 7-d regimens were included,cure rate was 70.6%(95% CI:40.2%-99.1%),whereas for 10-d combinations,cure rate was significantly higher(88.7%;95% CI:56.1%-109.9%;P < 0.05).Main eradication rate for QT was 67.4%(95% CI:49.7%-67.9%).The 7-d LA and QT showed comparable efficacy [odds ratio(OR):1.09;95% CI:0.63-1.87],whereas the 10-d LA regimen was significantly more effective than QT(OR:5.05;95% CI:2.74-9.31;P < 0.001;I 2 = 75%).No differences were reported in QT eradication rates among Asian and European studies,whereas LA regimens were more effective in European populations(78.3% vs 67.7%;P = 0.05).Incidence of SE was lower in LA therapy than QT(OR:0.39;95% CI:0.18-0.85;P = 0.02).A higher rate of side effects was reported in Asian patients who received QT.Our findings support the use of 10-d LA as a simple second-line treatment for H.pylori eradication with an excellent eradication rate and tolerability.The optimal second-line alternative scheme might differ among countries depending on quinolone resistance.展开更多
AIM:To compare triple therapy vs quadruple therapy for 10 d as first-line treatment ofHelicobacter pylori(H.pylori) infection.METHODS:Consecutive H.pylori positive patients never treated in the past for this infection...AIM:To compare triple therapy vs quadruple therapy for 10 d as first-line treatment ofHelicobacter pylori(H.pylori) infection.METHODS:Consecutive H.pylori positive patients never treated in the past for this infection were randomly treated with triple therapy of pantoprazole(PAN) 20 mg bid,amoxicillin(AMO) 1 g bid and moxifloxacin(MOX) 400 mg bid for 10 d(PAM) or with quadruple therapy of PAN 20 mg bid,AMO 1 g bid,MOX 400 mg bid and bismuth subcitrate 240 mg bid for 10 d(PAMB).All patients were found positive at 13 C-Urea breath test(UBT) performed within ten days prior to the start of the study.A successful outcome was confirmed with an UBT performed 8 wk after the end of treatment.χ 2 analysis was used for statistical comparison.Per protocol(PP) and intention-to-treat(ITT) values were also calculated.RESULTS:Fifty-seven patients were enrolled in the PAM group and 50 in the PAMB group.One patient in each group did not return for further assessment.Eradication was higher in the PAMB group(negative:46 and positive:3) vs the PAM group(negative:44 and positive:12).The H.pylori eradication rate was statistically significantly higher in the PAMB group vs the PAM group,both with the PP and ITT analyses(PP:PAMB 93.8%,PAM 78.5%,P < 0.02;ITT:PAMB 92%,PAM 77.1 %,P <0.03).CONCLUSION:The addition of bismuth subcitrate can be considered a valuable adjuvant to triple therapy in those areas where H.pylori shows a high resistance to fluoroquinolones.展开更多
AIM:To find the way to improve the eradication rate of first-line therapy in Japanese patients.METHODS:We prospectively compared the effectiveness of 7-d quadruple therapy to standard 7 d triple therapy in Japanese pa...AIM:To find the way to improve the eradication rate of first-line therapy in Japanese patients.METHODS:We prospectively compared the effectiveness of 7-d quadruple therapy to standard 7 d triple therapy in Japanese patients infected with Helicobacter pylori(H.pylori).One hundred and nineteen patients were randomly assigned to receive 7-d non-bismuth quadruple therapy with lansoprazole,amoxicillin,clarithromycin and metronidazole(LACM7) or 7-d triple therapy with lansoprazole,amoxicillin and clarithromycin(LAC7).After three months,H.pylori status was analyzed by 13C-urea breath test.Incidence rates of adverse events were evaluated by use of questionnaires.RESULTS:By intention-to-treat(ITT) analysis,the eradication rate in the LACM7 group was 94.9%,which was significantly higher than the LAC7 group(68.3%,P < 0.001).Per protocol analysis also showed a significantly higher eradication rate in the LACM7 group(98.3%) than the LAC7 group(73.2%,P < 0.001).Nevertheless,the incidence of serious adverse events did not differ between the two groups(RR:1.10,95% CI:0.70-1.73,P = 0.67).CONCLUSION:Seven day non-bismuth quadruple therapy(LACM7) was superior to standard 7-d triple therapy(LAC7) for first-line eradication.展开更多
Self-aligned multiple patterning (SAMP) can enable the semiconductor scaling before EUV lithography becomes mature for industry use.Theoretically any small size of pitch can be achieved by repeating SADP on same wafer...Self-aligned multiple patterning (SAMP) can enable the semiconductor scaling before EUV lithography becomes mature for industry use.Theoretically any small size of pitch can be achieved by repeating SADP on same wafer but with challenges of pitch walking and line cut since line cut has to be done by lithography instead of self-aligned method.Line cut can become an issue at sub-30nm pitch due to edge placement error (EPE).In this paper we will discuss some recent novel ideas on line cut after self-aligned multiple patterning.展开更多
输电线路带电水冲洗是电力系统防污闪的主要措施之一。500 k V输电线路4联污秽绝缘子串具有间距小、污秽重、难以清洗等特点,为实现其带电水冲洗,在武汉大学户外带电水冲洗试验场进行了冲洗试验,比较了4个污秽度等级下1冲4回和1冲6回这...输电线路带电水冲洗是电力系统防污闪的主要措施之一。500 k V输电线路4联污秽绝缘子串具有间距小、污秽重、难以清洗等特点,为实现其带电水冲洗,在武汉大学户外带电水冲洗试验场进行了冲洗试验,比较了4个污秽度等级下1冲4回和1冲6回这2种冲洗方法。结果表明:冲洗过程中在较长冲洗时间段泄漏电流幅值都<10 m A;冲洗到绝缘子串上部3/4及5/6位置附近处时出现了泄漏电流突增现象;冲洗泄漏电流基波幅值最大值、结束时刻泄漏电流基波幅值随污秽度等级增大而增大。4种污秽度等级下,1冲4回和1冲6回冲洗过程中泄漏电流基波幅值最大值分别小于61 m A和31 m A,这2种方法用于500 k V输电线路4联污秽绝缘子串的带电水冲洗都是安全的。展开更多
文摘Worldwide prevalence of Helicobacter pylori(H.pylori) infection is approximately 50%,with the highest being in developing countries.We compared cure rates and tolerability(SE) of second-line anti-H.pylori levofloxacin/amoxicillin(LA)-based triple regimens vs standard quadruple therapy(QT).An English language literature search was performed up to October 2010.A meta-analysis was performed including randomized clinical trials comparing 7-or 10-d LA with 7-d QT.In total,10 articles and four abstracts were identified.Overall eradication rate in LA was 76.5%(95% CI:64.4%-97.6%).When only 7-d regimens were included,cure rate was 70.6%(95% CI:40.2%-99.1%),whereas for 10-d combinations,cure rate was significantly higher(88.7%;95% CI:56.1%-109.9%;P < 0.05).Main eradication rate for QT was 67.4%(95% CI:49.7%-67.9%).The 7-d LA and QT showed comparable efficacy [odds ratio(OR):1.09;95% CI:0.63-1.87],whereas the 10-d LA regimen was significantly more effective than QT(OR:5.05;95% CI:2.74-9.31;P < 0.001;I 2 = 75%).No differences were reported in QT eradication rates among Asian and European studies,whereas LA regimens were more effective in European populations(78.3% vs 67.7%;P = 0.05).Incidence of SE was lower in LA therapy than QT(OR:0.39;95% CI:0.18-0.85;P = 0.02).A higher rate of side effects was reported in Asian patients who received QT.Our findings support the use of 10-d LA as a simple second-line treatment for H.pylori eradication with an excellent eradication rate and tolerability.The optimal second-line alternative scheme might differ among countries depending on quinolone resistance.
文摘AIM:To compare triple therapy vs quadruple therapy for 10 d as first-line treatment ofHelicobacter pylori(H.pylori) infection.METHODS:Consecutive H.pylori positive patients never treated in the past for this infection were randomly treated with triple therapy of pantoprazole(PAN) 20 mg bid,amoxicillin(AMO) 1 g bid and moxifloxacin(MOX) 400 mg bid for 10 d(PAM) or with quadruple therapy of PAN 20 mg bid,AMO 1 g bid,MOX 400 mg bid and bismuth subcitrate 240 mg bid for 10 d(PAMB).All patients were found positive at 13 C-Urea breath test(UBT) performed within ten days prior to the start of the study.A successful outcome was confirmed with an UBT performed 8 wk after the end of treatment.χ 2 analysis was used for statistical comparison.Per protocol(PP) and intention-to-treat(ITT) values were also calculated.RESULTS:Fifty-seven patients were enrolled in the PAM group and 50 in the PAMB group.One patient in each group did not return for further assessment.Eradication was higher in the PAMB group(negative:46 and positive:3) vs the PAM group(negative:44 and positive:12).The H.pylori eradication rate was statistically significantly higher in the PAMB group vs the PAM group,both with the PP and ITT analyses(PP:PAMB 93.8%,PAM 78.5%,P < 0.02;ITT:PAMB 92%,PAM 77.1 %,P <0.03).CONCLUSION:The addition of bismuth subcitrate can be considered a valuable adjuvant to triple therapy in those areas where H.pylori shows a high resistance to fluoroquinolones.
文摘AIM:To find the way to improve the eradication rate of first-line therapy in Japanese patients.METHODS:We prospectively compared the effectiveness of 7-d quadruple therapy to standard 7 d triple therapy in Japanese patients infected with Helicobacter pylori(H.pylori).One hundred and nineteen patients were randomly assigned to receive 7-d non-bismuth quadruple therapy with lansoprazole,amoxicillin,clarithromycin and metronidazole(LACM7) or 7-d triple therapy with lansoprazole,amoxicillin and clarithromycin(LAC7).After three months,H.pylori status was analyzed by 13C-urea breath test.Incidence rates of adverse events were evaluated by use of questionnaires.RESULTS:By intention-to-treat(ITT) analysis,the eradication rate in the LACM7 group was 94.9%,which was significantly higher than the LAC7 group(68.3%,P < 0.001).Per protocol analysis also showed a significantly higher eradication rate in the LACM7 group(98.3%) than the LAC7 group(73.2%,P < 0.001).Nevertheless,the incidence of serious adverse events did not differ between the two groups(RR:1.10,95% CI:0.70-1.73,P = 0.67).CONCLUSION:Seven day non-bismuth quadruple therapy(LACM7) was superior to standard 7-d triple therapy(LAC7) for first-line eradication.
文摘Self-aligned multiple patterning (SAMP) can enable the semiconductor scaling before EUV lithography becomes mature for industry use.Theoretically any small size of pitch can be achieved by repeating SADP on same wafer but with challenges of pitch walking and line cut since line cut has to be done by lithography instead of self-aligned method.Line cut can become an issue at sub-30nm pitch due to edge placement error (EPE).In this paper we will discuss some recent novel ideas on line cut after self-aligned multiple patterning.
文摘输电线路带电水冲洗是电力系统防污闪的主要措施之一。500 k V输电线路4联污秽绝缘子串具有间距小、污秽重、难以清洗等特点,为实现其带电水冲洗,在武汉大学户外带电水冲洗试验场进行了冲洗试验,比较了4个污秽度等级下1冲4回和1冲6回这2种冲洗方法。结果表明:冲洗过程中在较长冲洗时间段泄漏电流幅值都<10 m A;冲洗到绝缘子串上部3/4及5/6位置附近处时出现了泄漏电流突增现象;冲洗泄漏电流基波幅值最大值、结束时刻泄漏电流基波幅值随污秽度等级增大而增大。4种污秽度等级下,1冲4回和1冲6回冲洗过程中泄漏电流基波幅值最大值分别小于61 m A和31 m A,这2种方法用于500 k V输电线路4联污秽绝缘子串的带电水冲洗都是安全的。
