影响幽门螺杆菌根除疗效相关因素

幽门螺杆菌（Hp）是慢性活动性胃炎和消化性溃疡的主要病因,并与胃癌、MALT淋巴瘤的发生密切相关,其根除治疗在临床上具有重要的意义。大量研究显示Hp的根除疗效在下降,本文就有关影响Hp根除疗效的相关因素做一简要概述。     

布拉酵母菌联合三联疗法根除幽门螺杆菌疗效研究

目的探讨布拉酵母菌（S．Boulardii）散剂联合标准三联疗法根除幽门螺杆菌（Helicobacterpylori,H．pylori）的有效性和安全性。方法将210例初次接受根除治疗的Hpylori阳性患者随机分为2组,A组：口服埃索美拉唑＋阿莫西林＋呋喃唑酮,每日2次,疗程10d;B组：与A相同的三联10d疗法,加s．Boulardii散剂口服500mg／次,2次／d,共用药14d。观察患者不良反应发生情况及对药物耐受情况,停药4周后检测H．pylori根除率。结果A、B组Hpylori根除率按方案（PP）分析分别为70．7％、86．3％,按意向性（ITT）分析分别为66．7％、83．8％,B组PP和ITT根除率均高于A组,差异有统计学意义（P〈0．05）;B组不良反应发生率低于A组（8．8％vs 28．3％,P〈0．05）;在药物耐受程度方面,B组明显优于A组（P〈0．05）。结论S．Boulardii散剂联合标准三联疗法作为初次根除Hpylori治疗时可提高根除率,降低不良反应,增加药物耐受程度。     

阿泰宁在根除幽门螺杆菌中的临床应用疗效

目的探讨阿泰宁（酪酸梭菌活菌胶囊）在根除幽门螺杆菌中的应用和临床疗效。方法将120例幽门螺杆菌阳性的慢性胃炎患者,随机分为观察组（58例）和对照组（62例）。对照组口服标准三联方（雷贝拉唑肠溶胶囊＋阿莫西林胶囊＋克拉霉素缓释片）进行治疗,观察组在口服三联方的同时序贯联用阿泰宁（即先服用三联方,间隔2~3 h后再服用阿泰宁）,疗程均为1周,观察两组患者用药后幽门螺杆菌根除率及不良反应发生率。结果 （1）幽门螺杆菌根除率：对照组为72.6%,观察组为91.4%,观察组明显高于对照组,差异有统计学意义（P〈0.05）;（2）不良反应发生率：对照组为38.7%;观察组为8.6%,观察组明显低于对照组,差异有统计学意义（P〈0.05）。结论在标准三联方的基础上加用阿泰宁能显著提高幽门螺杆菌根除率,并减少胃肠道不良反应,提高患者的依从性,值得临床推广。     

A new modified concomitant therapy for Helicobacter pylori eradication in Turkey

Background: Helicobacter pylori eradication rates have tended to decrease recently, mostly due to antibiotic resistance. In the present study, our aim was to determine Hp eradication rate with the LAC plus tid metronidazole regimen and the secondary objective of this study was to identify an effective regimen for our population. Methods: Eighty‐four Hp‐positive patients with non‐ulcer dyspepsia were assigned into the same group. Patients were administered the classical LAC protocole (lansoprazole 30 mg bid, amoxicillin 1 g bid and claritromycin 500 mg bid for 14 days) plus metronidazole 500 mg tid for 14 days. Gastroscopy and histopathological assessment were performed before enrollment and C¹⁴ urea breath test and stool antigen test were performed 6 weeks after treatment. Results: All 84 patients completed the study. No patient left the study because of drug side effect. Total eradication rate was 75% (63/84). Conclusion: Although LAC plus tid metronidazole regimen achieved a much better eradication rate compared with the standard LAC regimen; this is the first study that has a relatively low success with a concomitant therapy. So in areas of high resistance like Turkey, one cannot expect a high success with any clarithromycin containing regimen and those should be avoided.     

Twice-Daily Versus Thrice-Daily Clarithromycin in Combination with Ranitidine Bismuth Citrate in the Eradication of Helicobacter pylori

Background. Ranitidine bismuth citrate (RBC), 400 mg bid for 4 weeks, plus clarithromycin, 500 mg tid, is a regimen approved by the US Food and Drug Administration for the eradication of Helicobacter pylori in patients with duodenal ulcers. Proof that the clarithromycin portion of the regimen could be given twice daily without loss of efficacy would reduce cost and improve patient compliance. The objective of this study was to compare the H. pylori eradication rates in patients who had duodenal ulcer and were randomly assigned to 4 weeks of treatment with RBC, 400 mg bid, in conjunction with 2 weeks of therapy with either clarithromycin, 500 mg tid, or clarithromycin, 500 mg bid. Patients and Methods. Patients who had a duodenal ulcer and were H. pylori–positive by at least two tests were randomly assigned to (1) RBC, 400 mg bid for 4 weeks, plus clarithromycin, 500 mg tid for 2 weeks, or (2) RBC, 400 mg bid for 4 weeks, plus clarithromycin, 500 mg bid for 2 weeks. H. pylori eradication was assessed 4 weeks after completion of RBC plus clarithromycin. Results. Three hundred eighty-three patients from 78 centers had a duodenal ulcer and were H. pylori–positive. The modified intent-to-treat (MITT) and the per-protocol (PP) eradication rates were statistically equivalent between the twice-daily (65% MITT, 74% PP) and thrice-daily (63% MITT, 73% PP) clarithromycin treatment regimens. Incidence and types of adverse events did not differ between the two groups. Conclusions. For eradicating H. pylori in patients with duodenal ulcer, clarithromycin, 500 mg bid for 2 weeks, with RBC, 400 mg bid for 4 weeks, is equivalent to clarithromycin, 500 mg tid with RBC. The potential enhancement of patient compliance, reduced cost of clarithromycin, and equivalent efficacy would support the use of twice-daily clarithromycin in triple-therapy regimens with RBC.     

益生菌对腹痛儿童幽门螺杆菌根除的影响

目的观察微生态制剂金双歧(双歧杆菌、乳杆菌和嗜热链球菌三联活茵片)对腹痛儿童幽门螺杆菌根除治疗的影响。方法将54例幽门螺杆菌(H.pylori)阳性的腹痛儿童随机分成A组(奥美拉唑、克拉霉素、阿莫西林三联疗法)和B组(金双歧联用三联疗法),疗程均为2周,治疗结束4周后复查13C-尿素呼气试验,统计患儿治疗期间的不良反应。结果 A、B两组根除根除率分别为74.3%和88.8%,差异无统计学意义(P>0.05);B组胃肠道不良反应明显少于A组(P<0.01)。结论微生态制剂不能显著增加腹痛儿童幽门螺杆菌根除率,但降低三联根除疗法的胃肠道不良反应。     

二联方案在幽门螺杆菌根除治疗中的应用进展

幽门螺杆菌(Helicobacter pylori,H.pylori)在世界范围内感染率高,随着H.pylori对常用抗生素的耐药率逐渐增加,高效的经验性治疗方案亟待探索。新近Maastricht V/Florence共识及我国第五次幽门螺杆菌感染处理共识均推荐含铋剂四联方案可作为一线治疗方案。但是,四联方案存在用药多、药物不良反应多、患者依从性差、部分老年人及肝、肾功能不全的患者无法耐受等缺点。近年来多项研究显示高剂量阿莫西林联合质子泵抑制剂(proton pump inhibitor,PPI)的二联方案与含铋剂四联方案的疗效相近,但用药少,不良反应少,患者依从性更高,有可能成为经验性的一线治疗方案,或成为一线、二线治疗失败后的补救方案。本文就二联方案在H.pylori根除治疗中的应用进展作一综述。     

幽门螺杆菌根除疗法对肠道微生态的影响

幽门螺杆菌(Helicobacter pylori)感染是世界范围关注的焦点,进行幽门螺杆菌根除治疗是世界各国针对感染所采取的一项重要举措。但随着幽门螺杆菌耐药率,尤其是对大环内酯类药物耐药率的增加,标准三联疗法根除效果逐渐不能满足需求,更多的疗法得以推出。但是新推出的诸多疗法都应用了比以前更大剂量、更多种类甚至更长疗程的抗生素,这对于肠道微生物的微生态结构和数量都可能造成严重影响,甚至可能产生严重的副作用,同时也可能会对其耐药性产生影响。本文回顾了近20年来幽门螺杆菌根除治疗对肠道微生态的影响和一些新型实验疗法的研究结果,以对上述问题进行探讨。