Numerous studies implicate Helicobacter pylori as one causative agent
producing gastritis and dyspepsia. Recent reports focus on another bac
terium Gastrospirillum hominis, as a possible pathogen producing gastr
itis. We report a 30-year-old researcher who became acutely ill with e
pigastric pain indicative of esophagitis or peptic ulcer disease. Gast
ritis and a gastric ulcer were observed endoscopically. Histological e
xamination of the gastric mucosa revealed an acute gastritis and large
spiral-shaped organisms. The spiral forms were present in large quant
ities in the gastric mucosa of experimental animals (cats) handled by
the patient in his research. Electron microscopy confirmed that the or
ganisms from the cat and patient were morphologically identical. The p
atient was successfully treated with bismuth subsalicylate. His sympto
ms resolved and the organisms were cleared from his stomach. This stud
y provides evidence that another bacterium, a Gastrospirillum, may cau
se gastritis in man and may be transmitted from animal to man.