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 کاملPhagocytosis of microbial L-forms.
Little data are available regarding L-form phagocyte interactions. Due to difficulty with more conventional methods, a serum-free technique of surface phagocytosis employing cellulose ester micropore filters, fluorochrome staining, and reflecting fluorescence microscopy was developed. Intracellular localization of L-frms was confirmed by electron microscopy. In timed experiments, phagocytosis o...
متن کاملCell-wall deficient L. monocytogenes L-forms feature abrogated pathogenicity
Stable L-forms are cell wall-deficient bacteria which are able to multiply and propagate indefinitely, despite the absence of a rigid peptidoglycan cell wall. We investigated whether L-forms of the intracellular pathogen L. monocytogenes possibly retain pathogenicity, and if they could trigger an innate immune response. While phagocytosis of L. monocytogenes L-forms by non-activated macrophages...
متن کاملSignificance of dormant forms of Helicobacter pylori in ulcerogenesis
Nearly half of the global population are carriers of Helicobacter pylori (H. pylori), a Gram-negative bacterium that persists in the healthy human stomach. H. pylori can be a pathogen and causes development of peptic ulcer disease in a certain state of the macroorganism. It is well established that H. pylori infection is the main cause of chronic gastritis and peptic ulcer disease (PUD). Decont...
متن کاملStreptococcal L forms. II. Chemical composition.
Suspension of a streptococcal L form in hypotonic solutions is accompanied by loss of viability and structural disintegration (Panos and Barkulis, 1959). Consequently, a variable amount of water soluble material is lost in employing hypotonic solutions for washing procedures and results in only a residue portion remaining. Analyses of such residues in terms of the chemical constituents of the i...
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ژورنال
عنوان ژورنال: World Journal of Gastroenterology
سال: 2003
ISSN: 1007-9327
DOI: 10.3748/wjg.v9.i3.525