Second-line Helicobacter pylori eradication with a furazolidone-based regimen in patients who have failed a metronidazole-based regimen. Absence of platelet response after eradication of Helicobacter pylori infection in patients with chronic idiopathic thrombocytopenic purpura. Rx drugs

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Digestion. 2001;64(4):222-5.
Second-line Helicobacter pylori eradication with a furazolidone-based regimen in patients who have failed a metronidazole-based regimen.

Sotoudehmanesh R, Malekzadeh R, Vahedi H, Dariani NE, Asgari AA, Massarrat S.

Digestive Diseases Research Center, Tehran University of Medical Sciences, Tehran, Iran.

BACKGROUND/AIM: In developing countries the standard quadruple therapy containing metronidazole results in suboptimal eradication rates of Helicobacter pylori (<75%). In a retrospective study, we undertook to evaluate efficacy and tolerability of a furazolidone-based regimen (omeprazole, furazolidone, bismuth, and tetracycline) in patients who had previously failed the standard metronidazole-based regimen (omeprazole, metronidazole, bismuth, and amoxicillin). METHODS: The records of H. pylori infected patients who were referred to outpatient clinic (from March 1999 to August 1999) and who underwent previous eradication regimens were studied. A total of 320 cases were noted to have received a metronidazole-based quadruple regimen. From these 320 patients, 80 were noted to have failed this regimen based on a urea breath test. These 80 patients were enrolled in the study and given the furazolidone-based regimen. Side effects were assessed at follow-up visits. At least 2 months after the end of each therapy regimen, a (14)C-urea test was performed in each subject to document the cure of the patients. RESULTS: A total of 80 patients (39 males and 41 females) with a mean age of 43.8 +/- (SD) 13.3 years were studied. The H. pylori eradication rate was 90% with the furazolidone-based regimen. The side effects of this regimen were minor. CONCLUSIONS: A furazolidone-based regimen is effective in patients who do not achieve cure of H. pylori infection with the metronidazole-based quadruple therapy. In areas where the metronidazole resistance is high, initial therapy with a furazolidone-based regimen is recommended. Copyright 2002 S. Karger AG, Basel

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BACKGROUND: Acid suppressants, especially proton-pump inhibitors, are major contributors to the drug costs in primary care. Although Helicobacter pylori eradication reduces peptic ulcer relapse, some studies suggest that patients may remain symptomatic and continue to require acid-suppressant therapy. METHODS: We identified all patients taking long-term acid suppressants in a large primary health care clinic to determine the proportion who had peptic ulcer disease and to examine the effect of H. pylori eradication on their long-term requirement for acid suppressants. RESULTS: 126/394 patients taking long-term acid suppressants had a definite diagnosis of peptic ulcer. Of these 126 patients, 60 were considered appropriate for the study. At Stage 1 (May 1994), all patients were tested for H. pylori infection and positive patients (60/66) received eradication therapy with omeprazole 20 mg bd and amoxycillin (1 gm bd) or clarithromycin (500 mg tds) for 2 weeks. Six weeks later (Stage 2) patients, requirements for continued acid-suppressant treatment were determined and previously positive subjects retested using the 13C urea breath rest. This showed that 70% (42/60) had been successfully eradicated. One year later (Stage 3), 44% (18/41) of the patients successfully eradicated still required acid suppressants. The majority of these patients (11/18; 61%) continued to remain on acid-suppressant treatment at 4 years (Stage 4) (95% CI 38%, 83%). CONCLUSIONS: We found that about 1/3 of all patients on long-term acid-suppressant therapy in General Practice had a confirmed diagnosis of peptic ulcer disease. Despite successful eradication treatment for H. pylori at the start of the study, about half of these patients still used acid suppressants after 1 year and 1/4 patients (11/41) in this group continued to remain on acid-suppressant treatment for another 3 years.

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Br J Haematol. 2001 Dec;115(4):1002-3.
Absence of platelet response after eradication of Helicobacter pylori infection in patients with chronic idiopathic thrombocytopenic purpura.

Jarque I, Andreu R, Llopis I, De la Rubia J, Gomis F, Senent L, Jimenez C, Martin G, Martinez JA, Sanz GF, Ponce J, Sanz MA.

Haematology Services, Hospital Universitario La Fe, Av. Campanar. 21, 46009 Valencia, Spain.

Eradication of Helicobacter pylori infection has been associated with the correction of thrombocytopenia in patients with idiopathic thrombocytopenic purpura (ITP). We have analysed the response to eradication of H. pylori in a series of 56 adult patients with chronic ITP. Forty patients had H. pylori infection (71%) that was eradicated in 23 of 32 evaluable patients (72%). Platelet counts did not significantly vary according to H. pylori treatment outcome. Three of 56 patients (5%) achieved a partial response attributable to H. pylori eradication. Therefore, detection of H. pylori infection should not be routinely included in the initial work-up of ITP.

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