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| <big><center>[[Infectious agents and parasites|'''BACK TO INFECTIOUS AGENTS AND PARASITES''']]</center></big> | | <big><center>[[Infectious agents and parasites|'''BACK TO INFECTIOUS AGENTS AND PARASITES''']]</center></big> |
| <big><center>[[Bacteria|'''BACK TO BACTERIA''']]</center></big> | | <big><center>[[Bacteria|'''BACK TO BACTERIA''']]</center></big> |
− | * These curved, microaerophilic, Gram-negative rods were discovered in the stomach of humans in 1987.
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− | * ''Helicobacter pylori'' in man.
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− | * In dogs: ''H. felis'', ''H. bizzozeronii'', ''H. salomonis'' and ''H. bilis''.
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− | * A [[Intestines - disease due to pathogens#|bacterial pathogen of the intestines]].
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| ===Overview=== | | ===Overview=== |
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| *Related to ''Campylobacter'' species and ''Arcobacter'' species | | *Related to ''Campylobacter'' species and ''Arcobacter'' species |
| + | *A [[Intestines - disease due to pathogens#|bacterial pathogen of the intestines]] |
| + | *Discovered in the stomach of humans in 1987 |
| + | *''H. felis'', ''H. bizzozeronii'', ''H. salomonis'' and ''H. bilis'' found in gastric mucosa and intestines of dogs and cats |
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| *Helical, S-shaped or curved Gram negative rods | | *Helical, S-shaped or curved Gram negative rods |
| *Require enriched media; some grow on Skirrow agar | | *Require enriched media; some grow on Skirrow agar |
− | *Microaerophilic | + | *Microaerophilic, non-saccharolytic |
| + | *Oxidase positive and catalase positive except for ''H. canis'' |
| + | *Helicobacters which colonise gastric mucosa are urease positive |
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| + | ===Clinical infections=== |
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| + | *''Helicobacter pylori'' causes gastritis and duodenal and gastric ulcers in humans |
| + | *Association with gastric adenocarcinoma in humans |
| + | *''H. mustelae'' has been associated with chronic gastritis and gastric ulcers in ferrets |
| + | *Significance in gastrointestinal diseases of domestic carnivores not known |