2010
DOI: 10.1016/j.ijheh.2010.03.002
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Biodiversity of amoebae and amoeba-associated bacteria in water treatment plants

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Cited by 71 publications
(65 citation statements)
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“…The isolation and identification of amoebae-resisting bacteria (ARB) using the well-established co-culture method involves inoculation of samples onto a monolayer of axenic amoebae and continuous monitoring of cultures for amoebal lysis, resulting from infection by ARBs (reviewed in [46,47]). From soil, drinking water, ground and surface water, and clinical samples, the amoebal co-culture method, with amoebal lysis as an assay endpoint, has been used by numerous groups to identify human pathogens such as those belonging to the class Chlamydiae and the genera Aeromonas, Bacillus, Enterobacter, Legionella, Mycobacterium, Pseudomonas, Rhodococcus, and Streptococcus as well as novel bacteria belonging to the genera Afipia and Bosea [48][49][50][51][52][53][54][55][56]. Thus, the absence of amoebal lysis observed in this study between each FLA and Francisella spp.…”
Section: Discussionmentioning
confidence: 99%
“…The isolation and identification of amoebae-resisting bacteria (ARB) using the well-established co-culture method involves inoculation of samples onto a monolayer of axenic amoebae and continuous monitoring of cultures for amoebal lysis, resulting from infection by ARBs (reviewed in [46,47]). From soil, drinking water, ground and surface water, and clinical samples, the amoebal co-culture method, with amoebal lysis as an assay endpoint, has been used by numerous groups to identify human pathogens such as those belonging to the class Chlamydiae and the genera Aeromonas, Bacillus, Enterobacter, Legionella, Mycobacterium, Pseudomonas, Rhodococcus, and Streptococcus as well as novel bacteria belonging to the genera Afipia and Bosea [48][49][50][51][52][53][54][55][56]. Thus, the absence of amoebal lysis observed in this study between each FLA and Francisella spp.…”
Section: Discussionmentioning
confidence: 99%
“…The most common bacteria isolated by amoebal coculture are members of the Mycobacterium genus that could be recovered from water treatment plants and from water networks 13,14,24,27,28 . Legionella and α-proteobacteria species could also be isolated from water treatment plants and from hospital water networks 14,24,[28][29][30][31] . Several Chlamydia-related species were also isolated from river water and water treatment facilities, as for example Estrella lausannensis (Figures 2B-C 12,15,32,33 .…”
Section: Representative Resultsmentioning
confidence: 99%
“…All'interno di uno stesso impianto, a seconda delle fasi, possono prevalere generi di ameba distinti; ad esempio, può prevalere il genere Acanthamoeba in ingresso, Naegleria nei filtri e Hartmanella nei serbatoi. È inoltre interessante notare che alcuni generi di amebe quali Hartmannella, Echinamoeba, e Vannella, presenti a bassissime concentrazioni nelle acque sorgive in ingresso agli impianti, per fenomeni di colonizzazione e ricrescita, in uscita hanno densità più elevate (13). Dopo i trattamenti finali di ultrafiltrazione o di disinfezione circa il 50% delle acque in uscita dagli impianti contiene ancora amebe.…”
Section: Ecologia Delle Amebe a Vita Libera Nelle Reti Idriche E Neglunclassified
“…Dopo i trattamenti finali di ultrafiltrazione o di disinfezione circa il 50% delle acque in uscita dagli impianti contiene ancora amebe. In particolare, il genere Hartmannella è risultato del tutto insensibile all'azione dei disinfettanti e richiederebbe studi mirati su tecniche di abbattimento alternative (13). Densità e biodiversità delle amebe all'interno delle reti di distribuzione sono generalmente più alte di quelle riscontrate nelle acque dopo trattamento in uscita dagli impianti, probabilmente per fenomeni di contaminazione, riconducibili a rotture accidentali e danneggiamento di tubi, excistamento di cisti amebiche e riduzione di disinfettante residuo.…”
Section: Ecologia Delle Amebe a Vita Libera Nelle Reti Idriche E Neglunclassified
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