Helicobacter pylori (redirected from Heliobacter)

Helicobacter pylori

A gramnegative rod-shaped bacterium that lives in the tissues of the stomach and causes inflammation of the stomach lining.

Mentioned in: Indigestion, Ulcers

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Helicobacter pylori (he·li·kō·bakˑ·ter pī·lōˑ·rē),

n a bacterium implicated as a predisposing factor for most pyloric ulcers.

Heliobacter pylori.

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Helicobacter pylori Campylobacter pylori GI disease A curved gram-negative microaerophilic bacillus which causes most cases of gastritis; it is present in 10-50% of healthy young persons and up to 60% of those ≥ age 60 Epidemiology H pylori may be spread by houseflies–hand washing may ↓ transmission, by intrafamilial contact, or domestic cats Note: 90% of Pts with intestinal-type gastric CA have been infected by H pylori, which may be a co-factor for gastric CA, acting either to stimulate production of cellular mutagens or induce ↑ proliferation after cell damage; it has been implicated in antibiotic-responsive duodenal ulcers, and linked to other gastric lesions, benign and malignant Diagnosis Gastric Bx with special–eg, Diff-Quik stain, serologic tests–90-95% accuracy, urea breath test Disease course H pylori infection → chronic superficial gastritis, peptic ulcer disease, lymphoproliferative disease, ± → gastric lymphoma, chronic atrophic gastritis, ± → gastric adenoCA Management Proton-pump inhibitors–eg, omeprazole, lansoprazole, esomeprazole; antibiotics–amoxicillin, clarithromycin, metronidazole; ranitidine; bismuth subcitrate. See Duodenal ulcer, Gastric lymphoma, Urea breath test.