Helicobacter pylori and Gastric Cancer

Helicobacter pylori is present in approximately one-half of the world ’s population. There are significant differences in prevalence based on region, age, race/ethnicity, and socioeconomic status. H pylori is the most common cause of infection-related cancers. Studies have demonstrated the relationship between H pylori infection and gastric adenocarcinoma and mucosa -associated lymphoid tissue lymphoma. H pylori has features and enzymatic properties allowing it to survive in the acidic stomach environment, and has specific virulence factors that promote an increased risk of gastric pathology. Eradication of H pylori is first-line therapy for mucosa-associated l ymphoid tissue lymphoma and decreases the risk of gastric adenocarcinoma.
Source: Gastrointestinal Endoscopy Clinics of North America - Category: Gastroenterology Authors: Source Type: research

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Tuncer Ozturk, Demet Sengul, Ilker SengulAnnals of African Medicine 2021 20(1):1-8 Helicobacter pylori (H. pylori) is a Gram-negative, helically shaped flagellated bacterium. Major diseases associated with H. pylori infection include peptic ulcer, gastric adenocarcinoma, and mucosa-associated lymphoid tissue lymphoma. The incidence of H. pylori in the anatomotopographic regions of the stomach, such as antrum, corpus, fundus, and incisura angularis, has been investigated. Do the rates of H. pylori in the settlements change over time according to the age ranges of the hosts? Does this change affect the diseases caused by or...
Source: Annals of African Medicine - Category: African Health Authors: Source Type: research
Rev Med Interne. 2021 Feb 26:S0248-8663(20)30792-X. doi: 10.1016/j.revmed.2020.11.012. Online ahead of print.ABSTRACTHelicobacter pylori infection is acquired during childhood mainly within the family. It causes active chronic gastritis associated with the development of many digestive and extra digestive diseases. Its expression results from interactions between the bacteria, the host and environmental factors modulating the evolution of gastritis and acid secretion. The French recommendations for research and treatment for curative or preventive purposes were updated in 2017. These are indications with a high level of ev...
Source: Revue de Medecine Interne - Category: Internal Medicine Authors: Source Type: research
Discussion Helicobacter pylori (H. pylori) is a microaerophilis, spiral bacterium that is a prevalent human pathogen. How this infection affects individuals is different in adults and children. Overall seroprevalence rate in children world-wide was estimated to be ~33%, but this seroprevalence rate is decreasing in the developed world for both adults and children. It is acquired in childhood and can persist through colonization throughout life if untreated. Fortunately, it often is asymptomatic and generally does not cause serious disease in children. Some serotyping data shows that within families children acquire it more...
Source: PediatricEducation.org - Category: Pediatrics Authors: Tags: Uncategorized Source Type: news
Conclusions: Gastric cancer has the fourth highest incidence of various cancers worldwide and is ranked second as a cause of cancer-related death. It exists from the antiquity and a lot of hypotheses have been developed about its etiology during the centuries, influencing its therapy. During the 20th century, thanks to the scientific and technological progresses the causes of the cancer have been discovered and the role of the bacterium Helicobacter pylori has been demonstrated, and new perspective research are currently trying to investigate the role of other microorganisms in gastric physiopathology, as well as its possi...
Source: Cancers - Category: Cancer & Oncology Authors: Tags: Article Source Type: research
Poshmaal Dhar1 and Julie McAuley2* 1Faculty of Health, School of Medicine, Deakin University, Geelong, VIC, Australia 2Department of Microbiology and Immunology, Peter Doherty Institute, University of Melbourne, Melbourne, VIC, Australia The family of cell surface (cs-) mucins are constitutively expressed at the cell surface by nearly all epithelial cells, beneath the gel-mucin layer. All cs-mucin family members have structural features that enable them to act as a releasable decoy barrier to mucosal pathogens, by providing ligands for pathogen binding and the ability to shed the bound extracellular domain. Due ...
Source: Frontiers in cellular and infection microbiology - Category: Microbiology Source Type: research
Publication date: Available online 6 October 2018Source: Microbiological ResearchAuthor(s): Ahmad Karkhah, Soheil Ebrahimpour, Maryam Rostamtabar, Veerendra Koppolu, Sorena Darvish, Veneela Krishna Rekha Vasigala, Majid Validi, Hamid Reza NouriAbstractHelicobacter pylori (H. pylori) is a bacterial pathogen that resides in more than half of the human population and has co-evolved with humans for more than 58000 years. This bacterium is orally transmitted during childhood and is a key cause of chronic gastritis, peptic ulcers and two malignant cancers including MALT (mucosa-associated lymphoid tissue) lymphoma and adenocarci...
Source: Microbiological Research - Category: Infectious Diseases Source Type: research
Helicobacter pylori (H. pylori) is the causative agent of chronic gastritis and peptic ulcer diseases and is an important risk factor for the development functional dyspepsia, peptic ulceration, gastric adenocarcinoma and mucosa-associated lymphoid tissue lymphoma. H. pylori has very high rates of infection in human populations, and it is estimated that over 50% of the world population is infected. Recently, certain extra-gastric manifestations, linked to H. pylori infection, have been widely investigated. Noteworthy, a growing body of evidences supports an association between H. pylori infection with lung cancer. The pres...
Source: Chinese Journal of Lung Cancer - Category: Cancer & Oncology Source Type: research
Abstract Helicobacter pylori (H. pylori) is an organism that is widespread in the human population and is sometimes responsible for some of the most common chronic clinical disorders of the upper gastrointestinal tract in humans, such as chronic-active gastritis, duodenal and gastric ulcer disease, low-grade B-cell mucosa associated lymphoid tissue lymphoma of the stomach, and gastric adenocarcinoma, which is the third leading cause of cancer death worldwide. The routes of infection have not yet been firmly established, and different routes of transmission have been suggested, although the most commonly accepted h...
Source: World Journal of Gastroenterology : WJG - Category: Gastroenterology Authors: Tags: World J Gastroenterol Source Type: research
An 85-year-old man underwent endoscopic submucosal dissection (ESD) for a type 0-IIc early gastric cancer (EGC), followed by successful Helicobacter pylori eradication. Follow-up EGD 15 months later revealed a flat elevated lesion with an irregular depression in the lesser curvature of the gastric corpus (A). Magnifying narrow-band imaging endoscopy showed an irregular microsurface and microvessel patterns in the depression (B). Examination of a biopsy specimen from the depressed area revealed well-differentiated adenocarcinoma.
Source: Gastrointestinal Endoscopy - Category: Gastroenterology Authors: Tags: At the focal point Source Type: research
Conclusion: Jordan is a low-risk area for gastric cancer, but carcinoma occurs at a young age and is associated with gastritis, Helicobacter pylori infection, and intestinal metaplasia in a large proportion of cases. Better strategic health planning and early detection is needed, especially in young patients suffering from gastritis. PMID: 28889157 [PubMed - in process]
Source: Saudi Medical Journal - Category: Middle East Health Tags: Saudi Med J Source Type: research
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