ArticleCell communication and signaling : CCS2024
Cultivation and molecular characterization of viable Helicobacter pylori from the root canal of 170 deciduous teeth of children.
Article in Cell communication and signaling : CCS, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Oral Helicobacter pylori: a scoping review and pilot study on the PCR-culture detection paradox.Clinical oral investigations · 2026Article
- Extracts from Plectranthus asirensis and Premna resinosa inhibit Helicobacter pylori-induced epithelial cell damage, DNA double-strand breaks and inflammation.Gut pathogens · 2025Article
- Molecular characterization of fourGut microbes · 2025Article
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6 authors.
Funding
Abstract
backgroundHelicobacter pylori is a persistent pathogen in the human stomach. However, the proposed transmission route via the oral cavity is not understood and under intense debate. While dozens of studies have shown by PCR that H. pylori DNA is frequently present in the oral cavity, data on the growth and characterization of viable H. pylori from this compartment are very scarce, and it is unclear whether the bacteria can survive in the oral cavity for longer time periods or even colonize it.
methodsSelective growth methods, scanning electron microscopy, urease assay, Western blotting, PCR, and gene sequencing were applied to identify and examine viable H. pylori in decayed milk teeth.
resultsHere, we studied viable H. pylori in the plaque and root canals of 170 endodontically infected deciduous teeth that were extracted from 54 children. While H. pylori DNA was detected in several plaque and many root canal samples by PCR, live bacteria could only be cultivated from 28 root canals, but not from plaque. These 28 isolates have been identified as H. pylori by PCR and sequencing of vacA, cagA and htrA genes, phylogenetic analyses, protein expression of major H. pylori virulence factors, and by signal transduction events during infection of human cell lines.
conclusionsThus, the microaerobic environment in the root canals of endodontically infected teeth may represent a protected and transient reservoir for live H. pylori, especially in individuals with poor dental hygiene, which could serve as a potential source for re-infection of the stomach after antibiotic therapy or for transmission to other individuals.
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