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Production of respirable vesicles containing live Legionella pneumophila cells by two Acanthamoeba spp

Article Abstract:

A study was conducted regarding the production of vesicles from two species of amoebae fed an isolate of Legionella pneumophila at temperatures found in cooling towers. L. pneumophila cells were observed within vesicles which were exposed to two cooling tower biocides for one day. Results revealed the clusters of bacteria in vesicles were not broken up by freeze-thawing and sonication. These vesicles may be instrumental for the transmission of legionellosis affiliated with cooling towers.

Author: Berk, Sharon G., Ting, Rebecca S., Turner, Glenn W., Ashburn, Rebecca J.
Publisher: American Society for Microbiology
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1998
Bacteria, Morphology (Biology), Cooling towers

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Intracellular proliferation of Legionella pneumophila in Hartmannella verminformis in aquatic biofilms grown on plasticized polyvinyl chloride

Article Abstract:

The in vivo growth of Legionella pneumophila in protozoa in aquatic biofilms developing at high concentrations on plasticized polyvinyl chloride in a batch system with autoclaved tap water is discussed. L. pneumophila multiplies in trophozoites of Hartmannella vermiformis are present in aquatic biofilms developing on plastic materials in contact with tap water in a batch test system.

Author: Akkermans, Antoon D. L., Kuiber, Melanie W., Wullings, Bart A., Beumer, Rijkelt R., Kooij, Dick van der
Publisher: American Society for Microbiology
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 2004
Growth, Microbial mats, Company growth

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Balamuthia mandrillaris, free-living ameba and opportunistic agent of encephalitis, is a potential host for Legionella pneumophila bacteria

Article Abstract:

An investigation on whether Balamuthia mandrillaris ameba can serve as a host for Legionella pneumophila bacteria is presented. The results revealed that Legionella pneumophila could initiate uptake by Balamuthia mandrillaris and could replicate within the ameba about 4 to 5 log cycles from 24 to 72 h after infection.

Author: Shadrach, Winlet Sheba, Rydzewski, Kerstin, Laube, Ulrike, Holland, Gudrun, Flieger, Antje, Ozel, Muhsin, Kiderlen, Albrecht F.
Publisher: American Society for Microbiology
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 2005
Germany, Behavior, Host-bacteria relationships

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Subjects list: Research, Amoeba, Amoebas, Legionella pneumophila
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