ArticlePLoS neglected tropical diseases2023
Enhancement of capsular hypermucoviscosity in Klebsiella pneumoniae by Acanthamoeba.
Article in PLoS neglected tropical diseases, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 3 citations in OpenAlex.
- Hypermucoviscosity inJournal of bacteriology · 2026Review
- Proteomic identification of Acanthamoeba castellanii excretory-secretory proteins associated with Klebsiella pneumoniae capsule enlargement: a candidate role for C-type lysozyme.Parasite (Paris, France) · 2026Article
- Small excretory-secretory proteins of Acanthamoeba castellanii genotype T4 upregulate the expression of capsule-associated genes via the Rcs two-component system in Klebsiella pneumoniae.Parasites & vectors · 2025Article
- Detection and co-occurrence of Acanthamoeba and Klebsiella pneumoniae in freshwater river systems of Taichung, Taiwan.BMC microbiology · 2025Article
- Unravelling mechanisms of bacterial recognition by Acanthamoeba: insights into microbial ecology and immune responses.Frontiers in microbiology · 2024Review
Corrections and comments
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Authors and funding
5 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundAcanthamoeba and Klebsiella pneumoniae are both environmental commensals. Recently, clinical harm caused by hypermucoviscous K. pneumoniae has been observed. However, the interaction between these microbes and the origin of hypermucoviscous K. pneumoniae have not been reported. METHODOLOGY/PRINCIPAL
findingsHere, we report that the bacterial capsule is enlarged when co-cultured with Acanthamoeba using India ink staining, and this effect depends on the number of parasites present. This interaction results in an enhancement of capsular polysaccharide production in the subsequent generations of K. pneumoniae, even without co-culturing with Acanthamoeba. The hypermucoviscosity of the capsule was examined using the sedimentation assay and string test. We also screened other K. pneumoniae serotypes, including K1, K2, K5, and K20, for interaction with Acanthamoeba using India ink staining, and found the same interaction effect. CONCLUSIONS/SIGNIFICANCE: These findings suggest that the interaction between Acanthamoeba and K. pneumoniae could lead to harmful consequences in public health and nosocomial disease control, particularly hypermucoviscous K. pneumoniae infections.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.