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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 ...
The current taxonomy of Helicobacter bacteria is somewhat complex and incomplete, with new species currently being considered as possibly belonging to this genus. [2] [6] [7] Within the Helicobacter genus, H. heilmannii s. l. is a group of Helicobacter species that are distinguished from H. pylori by being two- to three-fold larger in size (they are 4-10 micrometers in length and 0.5-0.8 ...
Helicobacter heilmannii sensu lato (i.e. H. heilmanni s.l.) is a grouping of non-H. pylori Helicobacter species that take as part of their definition a similarity to H. pylori in being associated with the development of stomach inflammation, stomach ulcers, [11] duodenum ulcers, [12] stomach cancers that are not lymphomas, and extranodal ...
The Warthin–Starry stain (WS) is a silver nitrate-based staining method (a silver stain) used in histology. It was first introduced in 1920 by American pathologists Aldred Scott Warthin (1866–1931) and Allen Chronister Starry (1890–1973), for the detection of spirochetes .
H. pylori is able to adhere to the surface of the phagocytes and impede their action. This is responded to by the phagocyte in the generation and release of oxygen metabolites into the surrounding space. H. pylori can survive this response by the activity of catalase at its attachment to the phagocytic cell surface. Catalase decomposes hydrogen ...
Helicobacter suis (H. suis) is a species within the Helicobacter genus of Gram-negative bacteria. [1] Helicobacter 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 nonlymphoma type, and various subtypes of extranodal ...
This is a timeline of the events relating to the discovery that peptic ulcer disease and some cancers are caused by H. pylori. In 2005, Barry Marshall and Robin Warren were awarded the Nobel Prize in Physiology or Medicine for their discovery that peptic ulcer disease (PUD) was primarily caused by Helicobacter pylori , a bacterium with affinity ...
Helicobacter bizzozeronii: Gastric MALT lymphoma. [2] Helicobacter felis: Gastric MALT lymphoma. [2] Helicobacter heilmannii: Marginal zone B-cell lymphoma of the stomach. [2] [4] Helicobacter hepaticus: Biliary cancer. [2] Helicobacter pylori: Stomach cancer, Marginal zone B-cell lymphoma of the stomach, and bile duct cancer [2] [5] [6 ...