Helicobacter


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Helicobacter

(hel'ĭ-kō-bak'tĕr),
A genus of helical, curved, or straight microaerophilic bacteria with rounded ends and multiple sheathed flagella (unipolar or bipolar and lateral) with terminal bulbs; form nonpigmented, translucent colonies, 1-2 mm in diameter; catalase and oxidase positive. Found in gastric mucosa of primates, including human beings and ferrets; some species are associated with gastric and peptic ulcers and predispose to gastric carcinoma. The type species is H. pylori.

Helicobacter

/He·li·co·bac·ter/ (hel″ĭ-ko-bak´ter) a genus of gram-negative, microaerophilic bacteria of the family Spirillaceae; H. cinae´di causes proctitis and colitis in homosexual men and has been implicated in septicemia in neonates and immunocompromised patients; H. pylo´ri causes gastritis and pyloric ulcers and has been implicated in gastric carcinogenesis.

Helicobacter

[hel′ikōbak′tər]
Etymology: Gk, helix coil + bakterion, small staff
a genus of gram-negative, rod-shaped, microaerophilic bacteria of the family Spirillaceae, consisting of motile, spiral organisms with multiple sheathed flagella; formerly classified in the genus Campylobacter. The bacteria are found in the gastric mucosal layer; many people are infected without showing any symptoms. H. pylori is the causative agent of stomach ulcers, gastritis, and duodenitis. It causes 90% of duodenal ulcers and 80% of gastric ulcers. Infection significantly increases the risk of developing gastric cancer or mucosal-associated-lymphoid type lymphoma. Antibiotics can eliminate infection and ulcer.

Hel·i·co·bac·ter

(hel'i-kō-bak'tĕr)
A genus of gram-negative helical, curved, or straight microaerophilic bacteria with rounded ends and numerous sheathed flagella (unipolar or bipolar and lateral) with terminal bulbs. Form nonpigmented, translucent colonies, 1-2 mm in diameter. Catalase and oxidase positive. Found in gastric mucosa of ferrets and primates, including human beings. Some species are associated with gastric and peptic ulcers and predispose to gastric carcinoma. The type species is H. pylori.

Hel·i·co·bac·ter

(hel'i-kō-bak'tĕr)
Genus of helical, curved, or straight microaerophilic bacteria with rounded ends and multiple sheathed flagella with terminal bulbs. Found in gastric mucosa of primates, including human beings; some species are associated with gastric and peptic ulcers and predispose to gastric carcinoma. The type species is H. pylori.

Helicobacter

microaerophilic, curved to spiral-shaped, gram-negative bacteria associated with gastritis and peptic ulcer disease in humans. The type species is H. pylori. It may also be involved in the etiology of gastric neoplasia.

Helicobacter acinonys, Helicobacter canis, Helicobacter felis, Helicobacter heilmannii, Helicobacter mustelae
isolates from the stomach of cheetahs, dogs, cats, dogs and ferrets, respectively. It is likely that they may be responsible for gastric disease in these species.
Helicobacter bilis
associated with multifocal hepatitis in mice.
Helicobacter hepaticus
causes focal hepatic necrosis and focal, subacute, non-suppurative hepatitis, progressing to chronic hepatitis with bile duct hyperplasia and hepatocellular tumors in mice.
References in periodicals archive ?
Association between Helicobacter pylori infection and inflammatory bowel disease: a meta-analysis and systematic review of the literature [abstract].
Oral colonization is unlikely to play an important role in Helicobacter pylori infection.
Eisai firmly believes that the newly developed triple formulation pack will help facilitate the proper use of drugs during Helicobacter pylori eradication and will thereby further contribute to increasing patient benefits.
In the majority of people this gastric inflammation associated with Helicobacter pylori infection will settle causing asymptomatic gastritis and normal acid production.
The role of the HLA-DQA1 gene in resistance to atrophic gastritis and gastric adenocarcinoma induced by Helicobacter pylori infection.
Seroprevalence of Helicobacter pylori infection among children and their parents in eastern Turkey.
Helicobacter pylori isolates recovered from gastric biopsies of patients with gastro-duodenal pathologies in Cameroon: current status of antibiogram.
The discovery in 1983 of the Helicobacter pylori organism was one of the major advances in gastroenterology in recent decades, as it has revolutionized the approach to many upper gastrointestinal disorders.
Demographic data and Helicobacter pylori status of 131 participants at baseline according to treatment allocation Characteristics Astaxanthin Astaxanthin Placebo group (40 mg) group (16 mg) group (n = 44) (n = 44) (n = 43) Sex (n) Male 5 4 9 Female 39 39 35 Mean ([+ or -] S.
Helicobacter pylori: ulcers and more: the beginning of an era.
Vacuolating cytotoxin in Helicobacter pylori water soluble proteins upregulates chemokine expression in human eosinophils via Ca2+ influx, mitochondrial reactive oxygen intermediates and NF-kappaB activation.
We analysed vomit and diarrhoea from cholera patients, and found large amounts of active Helicobacter pylori.