Canadian Medical Guide > Organisms > Bacteria > Gram-Negative Bacteria > Helicobacter Terms and Definitions

Helicobacter

Medical Definition:	A genus of gram-negative, spiral-shaped bacteria that is pathogenic and has been isolated from the intestinal tract of mammals, including humans.
Guide Notes:	infection = HELICOBACTER INFECTIONS (IM)
Previously Indexed:	Campylobacter (1984-1990)

Helicobacter Categories.

	Helicobacter felis - A species of HELICOBACTER that colonizes in the STOMACH of laboratory MICE; CATS; and DOGS. It is associated with lymphoid follicular hyperplasia and mild GASTRITIS in CATS.
	Helicobacter heilmannii - A species of gram-negative, spiral-shaped bacteria found in the gastric mucosa that is associated with chronic antral gastritis. This bacterium was first discovered in samples removed at endoscopy from patients investigated for HELICOBACTER PYLORI colonization.
	Helicobacter hepaticus - A species of HELICOBACTER that colonizes the CECUM and COLON of several strains of MICE, and is associated with HEPATITIS and carcinogenesis.
	Helicobacter mustelae - A species of HELICOBACTER commonly associated with STOMACH DISEASES in FERRETS.
	Helicobacter pylori - A spiral bacterium active as a human gastric pathogen. It is a gram-negative, urease-positive, curved or slightly spiral organism initially isolated in 1982 from patients with lesions of gastritis or peptic ulcers in Western Australia. Helicobacter pylori was originally classified in the genus CAMPYLOBACTER, but RNA sequencing, cellular fatty acid profiles, growth patterns, and other taxonomic characteristics indicate that the micro-organism should be included in the genus HELICOBACTER. It has been officially transferred to Helicobacter gen. nov. (see Int J Syst Bacteriol 1989 Oct;39(4):297-405).

Helicobacter Medical Definitions and Terms

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