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Helicobacter pylori, previously known as Campylobacter pylori, is a gram-negative, flagellated, helical bacterium. Mutants can have a rod or curved rod shape that exhibits less virulence . [ 1 ] [ 2 ] Its helical body (from which the genus name Helicobacter derives) is thought to have evolved to penetrate the mucous lining of the stomach ...
Patients swallow urea labelled with an uncommon isotope, either radioactive carbon-14 (nowadays preferred in many countries) or non-radioactive carbon-13.In the subsequent 10–30 minutes, the detection of isotope-labelled carbon dioxide in exhaled breath indicates that the urea was split; this indicates that urease (the enzyme that H. pylori uses to metabolize urea to produce ammonia) is ...
Helicobacter heilmannii s.s. (H. heilmannii s.s.) is a species within the Helicobacter genus of Gram negative bacteria. [1] Helicobacter pylori (H. pylori) is by far the best known Helicobacter species primarily because humans infected with it may develop gastrointestinal tract diseases such as stomach inflammation, stomach ulcers, duodenal ulcers, stomach cancers of the non-lymphoma type, and ...
Rapid urease test, also known as the CLO test (Campylobacter-like organism test), is a rapid diagnostic test for diagnosis of Helicobacter pylori. [1] The basis of the test is the ability of H. pylori to secrete the urease enzyme, which catalyzes the conversion of urea to ammonia and carbon dioxide.
The cancer may spread from the stomach to other parts of the body, particularly the liver, lungs, bones, lining of the abdomen, and lymph nodes. [11] The bacterium Helicobacter pylori accounts for more than 60% of cases of stomach cancer. [2] [3] [12] Certain strains of H. pylori have greater risks than others. [2]
Helicobacter pylori was identified in 1982 by two Australian scientists, Robin Warren and Barry J. Marshall, as a causative factor for ulcers. [43] In their original paper, Warren and Marshall contended that most gastric ulcers and gastritis were caused by colonization with this bacterium, not by stress or spicy food , as had been assumed before.
Pages in category "Helicobacter pylori" The following 11 pages are in this category, out of 11 total. This list may not reflect recent changes. ...
Helicobacter pylori colonized on the surface of regenerative epithelium, stained with the Warthin–Starry method. Clusters of bacteria (arrow) shown on Warthin–Starry stain. The Warthin–Starry stain ( WS ) is a silver nitrate -based staining method (a silver stain ) used in histology.