Search results
Results from the WOW.Com Content Network
Helicobacter pylori are class 1 carcinogenic bacteria, and potential cancers include gastric MALT lymphoma and gastric cancer. [10] [11] Infection with H. pylori is responsible for an estimated 89% of all gastric cancers and is linked to the development of 5.5% of all cases cancers worldwide. [13] [14] H. pylori is the only bacterium known to ...
Additionally, H. pylori has been associated with lymphomas and adenocarcinomas of the stomach, and has been classified by the World Health Organization as a carcinogen. Advances in molecular biology in the late 20th century led to the sequencing of the H. pylori genome, resulting in a better understanding of virulence factors responsible for ...
Bacteria involved in causing and treating cancers. Cancer bacteria are bacteria infectious organisms that are known or suspected to cause cancer. [1] While cancer-associated bacteria have long been considered to be opportunistic (i.e., infecting healthy tissues after cancer has already established itself), there is some evidence that bacteria may be directly carcinogenic.
IARC group 1 Carcinogens are substances, chemical mixtures, and exposure circumstances which have been classified as carcinogenic to humans by the International Agency for Research on Cancer (IARC). [1] This category is used when there is sufficient evidence of carcinogenicity in humans.
Helicobacter is a genus of gram-negative bacteria possessing a characteristic helical shape. They were initially considered to be members of the genus Campylobacter, but in 1989, Goodwin et al. published sufficient reasons to justify the new genus name Helicobacter. [2] The genus Helicobacter contains about 35 species. [3] [4] [5]
Helicobacter bilis: Biliary cancers (such as gallbladder and biliary tract cancers). [2] 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
Thus H. pylori-induced ROS appear to be the major carcinogens in stomach cancer because they cause oxidative DNA damage leading to carcinogenic mutations. Diet is also thought to be a contributing factor in stomach cancer: in Japan, where very salty pickled foods are popular, the incidence of stomach cancer is high.
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 ...