Unanswered questions about Helicobacter pylori.

Abstract:

:There is general agreement that Helicobacter pylori eradication is indicated in all infected patients with duodenal ulcer disease and is probably indicated in all infected patients with gastric ulcer disease. However, translation of treatment recommendations into practice leads to some difficult clinical decisions. Three of the more perplexing questions are whether or not all patients with dyspepsia and H. pylori should be treated, whether or not a definitive diagnosis of ulcer should be established by an invasive method, and whether H. pylori eradication is sufficient to prevent recurrence of bleeding ulcers, especially in patient groups that have a high frequency of nonsteroidal anti-inflammatory drug (NSAID) use. Another common problem is the question of whether or not to establish the success of an eradication regimen in an individual patient and the choice of method to obtain this information. There is also an obvious need to develop better antimicrobial regimens aimed specifically at Helicobacter pylori. At the basic level, almost nothing is known about the mechanisms by which H. pylori produces peptic ulcer in 10-20% of infected patients while producing gastritis in all infected subjects. There is good evidence that host factors, including intrinsic rate of acid secretion, family history and smoking are independent additive risk factors for ulcer. Ingestion of NSAIDs appears to be an independent and separate risk factor. There is evidence that strains of H. pylori that lack certain genetic markers may have a reduced likelihood of causing ulcers, but the 'ulcer' marker is present in the majority of infected subjects without ulcer.(ABSTRACT TRUNCATED AT 250 WORDS)

journal_name

Aliment Pharmacol Ther

authors

Walsh JH

doi

10.1111/j.1365-2036.1995.tb00781.x

subject

Has Abstract

pub_date

1995-01-01 00:00:00

pages

31-7

eissn

0269-2813

issn

1365-2036

journal_volume

9 Suppl 1

pub_type

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