含左氧氟沙星的三联方案补救根除幽门螺杆菌:荟萃分析

目的系统评价含左氧氟沙星的三联方案补救根除幽门螺杆菌的疗效和耐受性。方法检索Medline、Embase、Cinahl，检索词为（Helicobacter pylori或H．pylori）和（levofloxaxin或fluoruquinolones或quinolones），检索中国生物医学文献数据库（CBM-disc），检索词为“幽门螺杆菌和左氧氟沙星”或“幽门螺杆菌和喹诺酮”。筛选比较含左氧氟沙星的三联方案和含铋剂的四联方案的根除幽门螺杆菌补救治疗随机对照试验，进行荟萃分析，进而评价研究质量，提取数据计算根除率和不良反应率。结果共有7项随机对照试验符合入选标准，含左氧氟沙星的10d三联方案Hp根除率高于含铋剂的7d四联方案（86．9％比61.8%，P〈0．01），不良反应率或严重不良反应率低于后者（16．8％比37，1％，P〈0．01；0．41％比12．1％，P〈0．01），耐受性较好。含左氧氟沙星的7d三联方案疗效与含铋剂的7d四联方案相当（71．4％比78．6％，P=0．24）。结论含左氧氟沙星的10d三联方案补救根除的疗效和耐受性均优于含铋剂的7d四联方案。     

含多西环素的四联方案补救治疗幽门螺杆菌初次根除失败的临床研究

幽门螺杆菌（H．pylori）一线三联疗法的根除失败率日益增高。目的：评价含多西环素的四联方案补救治疗H．pylori初次根除失败的有效性和安全性。方法：共纳入37例日．pyZo打初次根除失败的消化性溃疡、慢性萎缩性胃炎或非溃疡性消化不良患者,予四联方案埃索美拉唑（20rag）＋枸橼酸铋钾（220mg）＋多西环素（100mg）＋阿莫西林（1000mg）,2次／dx10d。治疗结束4周后行”^13C-尿素呼气试验（UBT）以评估H．pylori根除情况。结果：4例患者失访,25例患者补救治疗成功,8例失败,补救治疗意向治疗（ITT）分析和符合方案（PP）分析根除率分别为67．6％和75．8％。21例（63．6％）患者发生轻微不良反应。结论：含多西环素的四联方案是一种安全、有效的H．pylori初次根除失败后的补救治疗方案。     

含左氧氟沙星的四联方案与常规四联方案补救治疗幽门螺杆菌感染疗效分析

目的 探讨含左氧氟沙星的四联补救方案抗幽门螺杆菌(HP)治疗的疗效和药物副作用.方法 将HP感染经常规三联疗法(奥美拉唑 阿莫西林 克拉毒素)治疗失败的84例患者分为A组(44例)和B组(40例).A组患者给予以左旋氧氟沙星为主的四联补救治疗7天(左氧氟沙星 奥美拉唑肠溶片 阿莫西林 胶体果胶铋),B组患者使用常规四联7天(洛赛克 胶体果胶铋 克拉毒素 甲硝唑)补救疗法,4周后做13c尿素酶呼吸试验,并作比较.结果 A组3例失访,余41例完成治疗及随访,其中36例(89.7%)补救根除成功,5例(11.3%)补救治疗失败,7例(17.1%)患者发生轻微不良反应;B组4例失访,25例(69.3%)根除成功,8例(22.2%)患者发生轻微不良反应,A、B两组Hp根除率比较有显著性差异(P＜0.05).结论 含左氧氟沙星的四联方案为安全有效的幽门螺杆菌补救治疗方案.     

序贯疗法与标准四联疗法对幽门螺杆菌根除失败后补救治疗的疗效分析

近年经典三联疗法的幽门螺杆菌（11．pylori）根除疗效明显降低,选择有效补救疗法对Hpylori根除失败者有重要意义。目的：比较序贯疗法与标准四联疗法对且pylori根除失败者的疗效。方法：将98例Hpylori根除失败者随机分为序贯疗法组（前5d予奥美拉唑20mg＋阿莫西林1000mgbid,后5d予奥美拉唑20mg＋左氧氟沙星200mg＋克拉霉素500mgbid）和标准四联疗法组（予奥美拉唑20mg＋胶体次枸橼酸铋钾220mg＋阿莫西林1000mg＋克拉霉素500mgbid,疗程7d）。停药4周后复查”C一尿素呼气试验,评估Hpylori根除疗效。结果：共95例患者完成方案,序贯疗法组11Tr和PP分析的Hpylori根除率均显著高于标准四联疗法组（ITF：89．8％对71,4％,PP：91．7％对74。5％,P〈0．05）,序贯疗法组临床症状改善的总有效率亦显著高于标准四联疗法组（95．8％对80．9％,P〈0．05）,两组不良反应发生率无明显差异（P〉0．05）。结论：对Hpylori根除治疗失败的患者,序贯疗法和标准四联疗法均可作为有效的补救治疗方案,但10d序贯疗法的疗效优于7d标准四联疗法。     

序贯疗法和四联疗法对幽门螺杆菌初治失败患者的疗效评价

目的:评价含左氧氟沙星序贯疗法和含铋剂四联疗法治疗根除失败的幽门螺杆菌感染患者的疗效以及发生的不良反应.方法:将98例经传统标准三联疗法(7 d)根除幽门螺杆菌失败的患者,随机分成治疗组和对照组.治疗组(序贯疗法)方案为前5d雷贝拉唑+左氧氟沙星,后5d雷贝拉唑+克拉霉素+呋喃唑酮,疗程l0d.对照组(四联疗法)方案为...     

含莫西沙星的三联方案补救根除幽门螺杆菌的系统评价

目的系统评价含莫西沙星的三联方案补救根除幽门螺杆菌（Hp）的疗效。方法检索比较含莫西沙星的三联方案和含铋剂的四联方案根除幽门螺杆菌补救治疗的随机对照临床试验,并进行荟萃分析。结果共有6项随机对照试验符合人选标准,共纳入725例患者。基于意向治疗（ITT）分析的结果显示含莫西沙星组Hp根除率为74．8％,含铋剂组为62．3％,差异有显著性（OR1．79,95％CI：1．29～2．49,P=0．0005）。基于按符合方案（PPT）分析的结果显示含莫西沙星组Hp根除率为81．4％,含铋剂组为71．7％,差异有显著性（OR1．61,95％CI：1．10～2．36,P=0．01）。进一步对仅纳入英文或中文研究以及疗程为7天的研究行敏感性分析,基于ITT分析的结果亦显示含莫西沙星组Hp根除率显著高于含铋剂组。结论含莫西沙星的三联补救根除Hp方案明显优于含铋剂的四联方案,应为Hp补救根除的优选方案。     

左氧氟沙星三联疗法根除幽门螺杆菌临床观察

观察左氧氟沙星、埃索美拉唑、阿莫西林三联疗法对幽门螺杆菌（npylori）治疗失败后的患者复治的疗效,选取62例经抗Mpylori一线治疗后^14C-尿素呼气试验证实幽门螺杆菌感染仍阳性的患者参与研究,将患者随机分为治疗组和对照组,治疗组34例,用左氧氟沙星、埃索美拉唑、阿莫西林三联疗法。对照组28例,用奥美拉唑、铋剂、阿莫西林、甲硝唑四联疗法。两组对再次治疗病例H．pylori根除率分别为85．29％、75％。差异无统计学意义（P〉0．05）。结果表明左氧氟沙星、埃索美拉唑、阿莫西林三联疗法对H．pylori治疗失败后的H．pylori根除率与以铋剂为基础加质子泵抑制剂（PPI）的四联疗法对H．pylori的根除率接近,但用药简单,患者易于接受。     

左氧氟沙星三联疗法根除幽门螺杆菌临床观察

目的观察左氧氟沙星、兰索拉唑、阿莫西林三联疗法对幽门螺杆菌（Hp）治疗失败后的患者复治的疗效。方法经抗Hp一线治疗后C^14呼气试验仍阳性，62例慢性胃炎病例，随机分为治疗组和对照组，治疗组34例，左氧氟沙星、兰索拉唑、阿奠西林三联疗法。对照组28例，奥美拉唑、铋剂、阿莫西林、甲硝唑四联疗法，比较两组的治疗结果。结果治疗组对再次治疗病例Hp根除率为85．29％，对照组为75％，两组Hp比较无统计学意义（P〉0．05）。结论左氧氟沙星、兰索拉唑、阿莫西林三联疗法对Hp治疗失败后的Hp根除率与以铋剂为基础加质子泵抑制剂（PPI）的四联疗法对Hp的根除率接近，但用药简单，患者易于接受。     

左氧氟沙星三联方案与常规四联补救方案治疗幽门螺杆菌感染的荟萃分析

目的:系统性评价含左氧氟沙星的三联方案与常规四联补救方案治疗幽门螺杆菌(H pylori)感染的疗效和不良反应发生率.方法:从常用电子数据库检索含左氧氟沙星的三联方案与四联补救方案根除H pylori的随机临床试验,荟萃分析各项研究的根除率和不良反应发生率的合并OR值;进行敏感性分析;以漏斗图检测发表偏倚.结果:共13项随机临床试验(1181例)符合纳入标准.含左氧氟沙星的三联方案和四联补救方案按意向治疗(ITT)分析的H pylori的根除率分别为77.5%(95%CI 74.1%-80.9%)和70.5%(95%CI 66.8%-74.2%),合并OR值为1.51(95%CI 0.91-2.53);总不良反应发生率分别为21.3%(95%CI 17.7%-24.9%)和36.0%(95%CI 31.8%-40.2%),合并OR值0.45(95%CI 0.29-0.71). 结论:含左氧氟沙星的三联方案具有与常规四联补救方案相似的根除H pylori 疗效,而且可以显著降低根除过程中的不良反应发生率     

幽门螺杆菌根除治疗失败后的补救治疗

幽门螺杆菌（H.pylori)对抗生素的耐药率上升是导致根除治疗失败率上升的主要原因，对经标准方案根除H.pylori失败的患者有必要进行补救治疗。目的：评估铋剂、质子泵抑制剂（PPI）联用呋喃唑酮和四环素组成的7天四联方案用于根除H.pylori治疗失败后补救治疗的疗效，以及H.pylori耐药对疗效的影响。方法：予35例经含克拉霉素根除H.pylori方案治疗、H.pylori仍为阳性的患者以为期7天的四联治疗：枸橼酸铋钾220mg bid 奥美拉唑20mg bid 呋喃唑酮100mg bid 四环素750mg bid。治疗前取胃窦黏膜活检标本进行快速尿素酶试验、组织学检查和培养检测H.pylori。用琼脂扩散法测定克拉霉素、呋喃唑酮和四环素的最低抑菌浓度（MIC）。治疗结束后至少4周，采用^13C-尿素呼气试验进行H.pylori感染状态评估。结果：33例患者完成治疗和随访，2例失访。根据意图治疗（ITT）和试验方案（PP）分析，该补救方案的H.pylori根除率分别为68．6％（24／35）和72．7％（24／33）。10例（28．6％）患者发生轻度副反应（9例发生恶心、中上腹不适，1例发生皮疹）。35例中有27例H.pylori培养成功，克拉霉素的耐药率为51．8％（14／27），呋喃唑酮为3．7％（1／27），四环素为7．4％（2／27）。各药物耐药菌株和敏感菌株的H.pylori根除率无显著差异。结论：铋剂、PPI联用呋喃唑酮和四环素组成的7天联方案作为根除H.pylori治疗失败后的补救治疗可获得较高的H.pylori根除率。     

Posttreatment <Superscript>13</Superscript>C-urea breath test is predictive of antimicrobial resistance to <Emphasis Type="Italic">H. pylori</Emphasis> after failed therapy

OBJECTIVE: We tested whether a 13C-urea breath test can predict antimicrobial resistance of Helicobacter pylori (H. pylori). METHODS: Seventy patients who had failed triple eradication therapy and 108 untreated H. pylori-infected patients were given a 13C-urea breath test, endoscopy for culture of H. pylori, and assessment of clarithromycin resistance. The patients who had failed triple therapy then received 1 week of quadruple therapy to eradicate residual H. pylori. RESULTS: The posttreatment value of the 13C-urea breath test expressed as excessive delta13CO2 per ml (ECR) was higher in patients with residual H. pylori with clarithromycin resistance than in those without (23.8 vs 10.6; P<.0001). With a cutoff of ECR >or< or =15, the 13C-urea breath test was 88.6% sensitive and 88.9% specific in predicting clarithromycin resistance of residual H. pylori. The H. pylori eradication rate of the rescue regimen was higher for patients with a posttreatment ECR of the 13C-urea breath test < or =15 than for those with a value >15 (93.8% vs 73.3%; P<.05). In contrast, in treatment-naive H. pylori-infected patients, the pretreatment value of the 13C-urea breath test did not differ between patients infected with clarithromycin-resistant or-sensitive isolates (P>.05). CONCLUSION: The posttreatment value of the 13C-urea breath test is predictive of clarithromycin resistance in residual H. pylori after failed triple therapy and predicts efficacy of the rescue regimen. The value of the noninvasive test is promising for primary care physicians who need to select a rescue regimen without invasive H. pylori culture.     

Randomized study of two "rescue" therapies for Helicobacter pylori-infected patients after failure of standard triple therapies

OBJECTIVES: A novel rifabutin-based therapy is able to cure Helicobacter pylori infection in most patients who have failed eradication after standard proton pump inhibitor (PPI)-based triple therapy. We compared this regimen with the quadruple therapy. METHODS: A total of 135 patients were randomized into three groups who were treated for 10 days with pantoprazole 40 mg b.i.d., amoxycillin 1 g b.i.d., and rifabutin 150 mg o.d. (RAP50150 group), or 300 mg o.d. (RAP300 group), and pantoprazole 40 mg b.i.d., metronidazole 250 mg t.i.d., bismuth citrate 240 mg b.i.d., and tetracycline 500 mg q.i.d. (QT group). Before therapy, patients underwent endoscopy with biopsies for histology, culture and antibiotic susceptibility tests. H. pylori eradication was assessed by the 13C-urea breath test. RESULTS: On intention-to-treat analysis, eradication rates (with 95% confidence intervals [CI]) were 66.6% (53-80%) in the RAP150 and QT groups, respectively, and 86.6% (76-96%) in RAP300 group (p < 0.025). Most patients harboring metronidazole- and clarithromycin-resistant strains were eradicated at an equal rate by each of the three regimens. Side effects were observed in 9% and 11% of rifabutin-treated patients, and in 47% of those on quadruple therapy (p < 0.0001). CONCLUSIONS: In patients who failed standard eradicating treatments, a 10-day course of rifabutin with pantoprazole and amoxycillin is more effective and well tolerated than the quadruple therapy.     

Levofloxacin-based triple therapy for Helicobacter pylori re-treatment: Role of bacterial resistance

BACKGROUND: First-line Helicobacter pylori therapy fails in more than 20% of patients. Quadruple therapy is the suggested second-line therapy, but bismuth salts are not anymore available worldwide. This study aimed to assess the efficacy of a levofloxacin-amoxycillin triple therapy as a second-line treatment, and the role of primary levofloxacin resistance. METHODS: Forty patients, in whom first treatment with either standard 10-day triple or sequential therapy had failed, received 10-day triple therapy with rabeprazole (20mg b.d.), levofloxacin (250mg b.d.), and amoxycillin (1g b.d.). Cure rates were evaluated by the (13)C-urea breath test. Primary levofloxacin resistance was detected by culture. RESULTS: Bacterial culture was available in 33 (82.5%) out 40 patients, and primary levofloxacin resistance was detected in 10 (30.3%) patients. Overall, 33 of 40 patients accepted to participate in this study, and all returned for follow-up after therapy. Compliance to the therapy was safe except 1 patient only who stopped earlier the treatment due to side effects (oral candidiasis). H. pylori infection was eradicated in 24 patients, accounting for a 72.7% (95% CI: 57-88) eradication rate at both intention-to-treat and per protocol analyses. The eradication rate was higher in patients harbouring levofloxacin-susceptible than resistant strains (75% versus 33.3%; P=0.074). CONCLUSIONS: The eradication rate achieved by a levofloxacin-based re-treatment seems to be decreasing, and its efficacy is reduced in presence of levofloxacin resistance.     

Second-line rescue therapy with levofloxacin after H. pylori treatment failure: a Spanish multicenter study of 300 patients

AIM: Quadruple therapy is generally recommended as second-line therapy after Helicobacter pylori (H. pylori) eradication failure. However, this regimen requires the administration of four drugs with a complex scheme, is associated with a relatively high incidence of adverse effects, and bismuth salts are not available worldwide anymore. Our aim was to evaluate the efficacy and tolerability of a triple second-line levofloxacin-based regimen in patients with H. pylori eradication failure. METHODS: Design: Prospective multicenter study. Patients: in whom a first treatment with proton pump inhibitor-clarithromycin-amoxicillin had failed. Intervention: A second eradication regimen with levofloxacin (500 mg b.i.d.), amoxicillin (1 g b.i.d.), and omeprazole (20 mg b.i.d.) was prescribed for 10 days. Outcome: Eradication was confirmed with (13)C-urea breath test 4-8 wk after therapy. Compliance with therapy was determined from the interview and the recovery of empty envelopes of medications. Incidence of adverse effects was evaluated by means of a specific questionnaire. RESULTS: Three hundred consecutive patients were included. Mean age was 48 yr, 47% were male, 38% had peptic ulcer, and 62% functional dyspepsia. Almost all (97%) patients took all the medications correctly. Per-protocol and intention-to-treat eradication rates were 81% (95% CI 77-86%) and 77% (73-82%). Adverse effects were reported in 22% of the patients, mainly including nausea (8%), metallic taste (5%), abdominal pain (3%), and myalgias (3%); none of them were severe. CONCLUSION: Ten-day levofloxacin-based rescue therapy constitutes an encouraging second-line strategy, representing an alternative to quadruple therapy in patients with previous proton pump inhibitor-clarithromycin-amoxicillin failure, being simple and safe.     

Helicobacter pylori eradication with either quadruple regimen with lactoferrin or levofloxacin-based triple therapy: A multicentre study

BACKGROUND: Helicobacter pylori eradication rate following standard triple therapy is decreasing worldwide. A quadruple therapy with lactoferrin and a levofloxacin-based triple therapy has been found to achieve a very high (>90%) cure rate. This study aimed to confirm these encouraging results. METHODS: This was a prospective, open-label, randomised, multicentre, Italian study enrolling consecutive H. pylori infected patients. The infection at entry was assessed by endoscopy and biopsies (histology plus rapid urease test) in all patients, whilst bacterial eradication was assessed by 13C-urea breath test 4-6 weeks after therapy ended. Patients were randomised to receive either a 7-day, triple therapy with rabeprazole 20mg o.d., levofloxacin 500 mg o.d., and amoxycillin 1g b.i.d. (4 tablets/day) or a 7-day quadruple therapy comprising of rabeprazole 20mg, clarithromycin 500 mg, tinidazole 500 mg plus bovine lactoferrin 200mg, all given twice daily (10 tablets/day). RESULTS: Overall, 144 consecutive patients were enrolled in the study. Following the triple therapy, H. pylori infection was cured in 49 out of 72 (68.1%; 95% CI=57-79) patients and in 49 out of 71 (69.1%; 95% CI=58-80) at intention-to-treat and per protocol analyses, respectively. Following the quadruple regimen, the infection was cured in 52 out of 72 (72.2%; 95% CI=62-83) and in 52 out of 68 (76.5; 95% CI=66-87) patients at intention-to-treat and per protocol analyses, respectively. No statistically significant difference emerged between the two therapy regimens. CONCLUSIONS: H. pylori eradication rate following both quadruple therapy with lactoferrin and a low-dose PPI, triple therapy with levofloxacin is disappointingly low.     

Levofloxacin based regimens for the eradication of Helicobacter pylori

BACKGROUND: A 7 day treatment scheme based on rabeprazole/levofloxacin/amoxycillin or tinidazole achieved an eradication rate over 90%. However, the combination of drugs and duration of treatment for the correct use of levofloxacin in the eradication of are still unclear. OBJECTIVE: To compare the efficacy and tolerability of rabeprazole/levofloxacin based dual therapies given for 5, 7 or 10 days with rabeprazole/levofloxacin/amoxycillin triple therapy for 7 days. METHODS: One hundred and sixty patients with infection documented by the C-urea breath test and histology were included in this prospective, open label study. Subjects were randomized in four groups: (1) levofloxacin (500 mg o.d.), amoxycillin (1 g b.d.) and rabeprazole (20 mg o.d.) for 7 days; (2) levofloxacin (500 mg o.d.) and rabeprazole (20 mg o.d.) for 5 days; (3) levofloxacin (500 mg o.d.) and rabeprazole (20 mg o.d.) for 7 days; and (4) levofloxacin (500 mg o.d.) and rabeprazole (20 mg o.d.) for 10 days. Six weeks after the end of therapy status was checked by using the C-urea breath test. RESULTS: All patients completed the therapeutic regimens. The eradication rate was not significantly modified by treatment duration in the dual therapy schemes (5 days: 20/40, 50%; 7 days: 28/40, 70%; 10 days: 26/40, 65%). The eradication rate of the 1 week levofloxacin based triple therapy was significantly higher than that observed using any dual therapies (36/40). No major adverse effects were observed. CONCLUSIONS: A rabeprazole/levofloxacin dual eradication regimen is simple and well tolerated but does not achieve an acceptable eradication rate when compared to a 1 week rabeprazole/levofloxacin/amoxycillin triple therapy. The eradication rate did not increase with a longer regimen.     

Antimicrobial susceptibility testing before first-line treatment for Helicobacter pylori infection in patients with dual or triple antibiotic resistance

AIM To evaluate the efficacy of antimicrobial susceptibilityguided therapy before first-line treatment for infection in patients with dual or triple antibiotic resistance.METHODS A total of 1034 patients infected by Helicobacter pylori(H. pylori) during 2013-2014 were tested for antimicrobial susceptibility. 157 of 1034(15%) patients showed resistance to two(127/1034; 12%) and to three(30/1034; 3%) antibiotics. Sixty-eight patients with dual H. pylori-resistance(clarithromycin, metronidazole or levofloxacin) were treated for 10 d with triple therapies: OAL(omeprazole 20 mg b.i.d., amoxicillin 1 g b.i.d., and levofloxacin 500 mg b.i.d.) 43cases, OAM(omeprazole 20 mg b.i.d., amoxicillin 1 g b.i.d., and metronidazole 500 mg b.i.d.) 12 cases and OAC(omeprazole 20 mg b.id., amoxicillin 1 g b.i.d., and clarithromycin 500 mg b.i.d.) 13 cases based on the antimicrobial susceptibility testing. Twelve patients showed triple H. pylori-resistance(clarithromycin, metronidazole and levofloxacin) and received for 10 d triple therapy with OAR(omeprazole 20 mg b.id., amoxicillin 1 g b.i.d., and rifabutin 150 mg b.i.d.). Eradication was confirmed by 13C-urea breath test. Adverse effects and compliance were assessed by a questionnaire. RESULTS Intention-to-treat eradication rates were: OAL(97.6%), OAM(91.6%), OAC(92.3%) and OAR(58.3%). Cure rate was significantly higher in na?ve patients treated with OAR-10 compared to patients who had two or three previous treatment failures(83% vs 33%). Adverse events rates for OAL, OAM, OAC and OAR were 22%, 25%, 23% and 17%, respectively, all of them mild-moderate. CONCLUSION Antimicrobial susceptibility-guided triple therapies during 10 d for first-line treatment leads to an eradication rate superior to 90% in patients with dual antibiotic H. pylori resistance.     

Bismuth-based quadruple therapy using a single capsule of bismuth biskalcitrate,metronidazole, and tetracycline given with omeprazole versus omeprazole,amoxicillin, and clarithromycin for eradication of Helicobacter pylori in duodenal ulcer patients: a prospective,randomized, multicenter,North American trial

OBJECTIVES: This multicenter, randomized, active-controlled trial assessed efficacy of bismuth-based quadruple therapy with omeprazole, bismuth biskalcitrate, metronidazole, and tetracycline (OBMT) using a single-triple capsule of BMT compared with triple therapy with omeprazole, amoxicillin, and clarithromycin (OAC) in treatment of patients with Helicobacter pylori infection and duodenal ulcers. METHODS: Patients with active duodenal ulcer or diagnosed within the past 5 yr and with infection documented by (13)C-urea breath test plus histology or culture were randomly assigned to 10-day course of OBMT using a single-triple capsule containing bismuth biskalcitrate 140 mg, metronidazole 125 mg, and tetracycline 125 mg given as three capsules q.i.d. with omeprazole 20 mg b.i.d., or a 10-day course of OAC, omeprazole 20 mg plus amoxicillin 1 g plus clarithromycin 500 mg, all b.i.d. Eradication was confirmed by two negative urea breath tests at >1 month and >2 months after therapy. RESULTS: One hundred thirty-eight patients received OBMT and 137 OAC. Modified intent-to-treat eradication rates were 87.7% for OBMT and 83.2% for OAC (95% CI = -3.9%-12.8%; p = 0.29). OBMT eradicated 91.7% metronidazole-sensitive and 80.4% metronidazole-resistant strains (p = 0.06). OAC eradicated 92.1% clarithromycin sensitive and 21.4% clarithromycin-resistant strains (p < 0.001). Adverse events occurred in 58.5% of OBMT patients and 59.0% of OAC patients. CONCLUSIONS: OBMT regimen using the single-triple capsule is as efficacious and well-tolerated as the widely used OAC regimen for H. pylori eradication. This OBMT therapy largely overcomes H. pylori metronidazole resistance, present in 40% of patients in this study.     

Efficacy of levofloxacin-based triple therapy as second-line Helicobacter pylori eradication]

BACKGROUND/AIMS: Bismuth-based quadruple therapy for second-line eradication treatment achieves the eradication rate ranging from 70% to 81% due to antimicrobial resistance and poor compliance. The aim of this study was to compare the eradication rate of levofloxacin-based triple therapy with that of bismuth-based quadruple therapy in second-line Helicobacter pylori (H. pylori) eradication therapy. METHODS: Seventy-six outpatients with persistent H. pylori infection after first-line triple therapy were enrolled in this prospective randomized trial. The subjects were randomized to receive levofloxacin 300 mg, amoxicillin 1 g, and pantoprazole 20 mg, given twice daily for 7 days (LAP group), or metronidazole 500 mg twice, tetracycline 500 mg four times, and pantoprazole 20 mg twice, bismuth subcitrate 600 mg twice daily for 7 days (MTPB group). Eradication was confirmed with (13)C-urea breath test or rapid urease test 4 weeks after the cessation of therapy. RESULTS: Among Seventy-six patients initially included, eleven were lost during follow-up. The eradication rates, expressed as intention to treat (ITT) and per protocol (PP) analyses, were 51.6% and 53.3% in the LAP group, and 48.9% and 62.9% in the MTPB group, respectively. There was no significant difference in H. pylori eradication rates between the two groups (p=0.815 by ITT, p=0.437 by PP). LAP regimen was better tolerated than MTPB regimen with lower incidence of side effects (10.0% versus 31.4%, p=0.03). CONCLUSIONS: H. pylori eradication rates of levofloxacin-based triple therapy and bismuth-based quadruple therapy were not significantly different in second-line H. pylori eradication therapy, and low incidence of side effects was observed in levofloxacin-based triple therapy.     

Is there any correlation between C-urea breath test values and response to first-line and rescue Helicobacter pylori eradication therapies?

AIM: To study if there is a correlation between 13C-urea breath test values prior to treatment and the response to first-line and rescue Helicobacter pylori eradication therapies. METHODS: Six-hundred patients with peptic ulcer or functional dyspepsia infected by H. pylori were prospectively studied. Pre-treatment H. pylori infection was established by 13C-urea breath test. Three-hundred and twelve patients were treated with first-line eradication regimen, and 288 received a rescue regimen. H. pylori eradication was defined as a negative 13C-urea breath test, 8 weeks after completion of treatment. RESULTS: H. pylori eradication was achieved in 444 patients. No statistically significant differences were demonstrated when mean delta 13C-urea breath test values were compared between patients with eradication success and failure (49.4+/-33 versus 49.2+/-31). Differences in mean pre-treatment delta 13CO2 between patients with eradication success/failure were not demonstrated either when first-line or rescue regimens were prescribed. With the cut-off point of pre-treatment delta 13CO2 set at 35 units, sensitivity and specificity for the prediction of H. pylori eradication success was 43 and 60%. The area under the receiver operating characteristic curve evaluating all the cut-off points of the pre-treatment delta 13CO2 for the diagnosis of H. pylori eradication was 0.5. Finally, delta 13CO2 values did not influence the eradication in the logistic regression model. CONCLUSION: No correlation was observed between 13C-urea breath test values before treatment and the response to first-line and rescue H. pylori eradication therapies. Therefore, we conclude that the quantification of delta 13CO2 prior to treatment is not useful to predict the success or failure of eradicating therapy.