Helicobacter pyloriand Peptic Ulcer Disease

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Abstract
A GRAM-NEGATIVE, microaerophilic curved bacillus found in gastric-biopsy specimens from patients with histologie gastritis was successfully cultured in Perth, Australia, in 1982 and was soon named Campylobacter pylori 1 (a name later changed to Helicobacterpylori). Little attention had been paid to previous descriptions of spiral organisms in biopsy specimens of human gastric mucosa,2 , 3 but it now appears that at the least the organism is responsible for most cases of gastritis not associated with another known primary cause (e.g., autoimmune gastritis or eosinophilic gastritis) and that it may also be a major factor in the pathogenesis of peptic ulcer disease.The . . .