ArticleActa microbiologica et immunologica Hungarica2017
Enhanced survival but not amplification of Francisella spp. in the presence of free-living amoebae.
Article in Acta microbiologica et immunologica Hungarica, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
13 citing papers in PubMed, 20 citations in OpenAlex.
- Tularemia: Historical Perspectives and Current Challenges of a Re-Emerging Zoonosis.Biomedicines · 2026Review
- Experimental assessment of interactions between marine bacteria and model protists: from predator-prey relationships to bacterial-mediated lysis.Applied and environmental microbiology · 2025Article
- Review
- Diverse roles of low-molecular weight thiol GSH inCurrent research in microbial sciences · 2024Article
- Non-vaccinal prophylaxis of tularemia.Frontiers in microbiology · 2024Review
- Article
- Amoebae can promote the survival ofEmerging microbes & infections · 2021Article
- Presence ofMicroorganisms · 2021Article
- Long-Term Survival of Virulent Tularemia Pathogens outside a Host in Conditions That Mimic Natural Aquatic Environments.Applied and environmental microbiology · 2021Article
- Phase Variation of LPS and Capsule Is Responsible for Stochastic Biofilm Formation inFrontiers in cellular and infection microbiology · 2021Article
- Parasite-bacteria interrelationship.Parasitology research · 2020Review
- Tularemia as a waterborne disease: a review.Emerging microbes & infections · 2019Review
- Dual Role of Mechanisms Involved in Resistance to Predation by Protozoa and Virulence to Humans.Frontiers in microbiology · 2018Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 1 institution in 1 country.
Funding
Abstract
Transmission of Francisella tularensis, the etiologic agent of tularemia, has been associated with various water sources. Survival of many waterborne pathogens within free-living amoeba (FLA) is well documented; however, the role of amoebae in the environmental persistence of F. tularensis is unclear. In this study, axenic FLA cultures of Acanthamoeba castellanii, Acanthamoeba polyphaga, and Vermamoeba vermiformis were each inoculated with virulent strains of F. tularensis (Types A and B), the attenuated live vaccine strain, and Francisella novicida. Experimental parameters included low and high multiplicity of infection and incubation temperatures of 25 and 30 °C for 0-10 days. Francisella spp. survival was enhanced by the presence of FLA; however, bacterial growth and protozoa infectivity were not observed. In contrast, co-infections of A. polyphaga and Legionella pneumophila, used as an amoeba pathogen control, resulted in bacterial proliferation, cytopathic effects, and amoebal lysis. Collectively, even though short-term incubation with FLA was beneficial, the long-term effects on Francisella survival are unknown, especially given the expenditure of available amoebal derived nutrients and the fastidious nature of Francisella spp. These factors have clear implications for the role of FLA in Francisella environmental persistence.
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Registered trials
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.