The coccoid forms ofHelicobacter pylori. Criteria for their viability
نویسندگان
چکیده
منابع مشابه
Coccoid forms of Helicobacter pylori.
To the Editor-Eaton et al. [1] recently described experiments with coccoid Helicobacter pylori in gnotobiotic piglets. This interesting study examined the colonization and the reversion from coccoid to bacillary H pylori within 2 weeks of inoculation. Piglets colonized with bacillary H pylori had more severe gastritis 2 weeks after inoculation than did those sacrificed 1 week after inoculation....
متن کاملDiversity in protein synthesis and viability of Helicobacter pylori coccoid forms in response to various stimuli.
The viability of the coccoid forms of Helicobacter pylori was evaluated by assessing protein synthesis. Metabolic labeling studies showed the synthesis of proteins and the specific protein profiles of H. pylori coccoids produced under various conditions. Harsh conditions such as aerobiosis and starvation (lack of horse serum) in the culture did not affect the synthesis of proteins in the coccoi...
متن کاملDevelopment of two PCR-based techniques for detecting helical and coccoid forms of Helicobacter pylori.
The primary mode of transmission of Helicobacter pylori, a human pathogen carried by more than half the population worldwide, is still unresolved. Some epidemiological data suggest water as a possible transmission route. H. pylori in the environment transforms into a nonculturable, coccoid form, which frequently results in the failure to detect this bacterium in environmental samples by convent...
متن کاملCoccoid forms of Helicobacter pylori are the morphologic manifestation of cell death.
Helicobacter pylori can transform from its normal helical bacillary morphology to a coccoid morphology. Since this coccoid form cannot be cultured in vitro, it has been speculated that it is a dormant form potentially involved in the transmission of H. pylori and in a patient's relapse after antibiotic therapy. In this study we determined the effects of aging, temperature, aerobiosis, starvatio...
متن کاملcomparison pcr and culture methods for detect coccoid forms of helicobacter pylori
background: helicobacter pylori ( pylori ) was the most common cause of chronic gastritis and was linked to peptic ulcer disease and gastric cancer. environmental factors such as water a reservoir of h.pylori which infect human. a non-culture bacteria in coccoid forms widespread in aquatic environments.the objective of this study was elevating the diagnostic value of pcr and culture methods f...
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ژورنال
عنوان ژورنال: Epidemiology and Infection
سال: 1993
ISSN: 0950-2688,1469-4409
DOI: 10.1017/s0950268800057216