Biocidal efficacy of monochloramine against planktonic and biofilm‐associated Naegleria fowleri cells
AIMS: Free‐living amoebae (FLA) in aqueous systems are a problem for water network managers and health authorities because some are pathogenic, such as Naegleria fowleri, and they have also been reported to operate as reservoirs and vectors of several pathogenic bacteria. Therefore, to better contro...
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| Veröffentlicht in: | Journal of applied microbiology 2014-04, Vol.116 (4), p.1055-1065 |
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| creator | Goudot, S Herbelin, P Mathieu, L Soreau, S Banas, S Jorand, F.P.A |
| description | AIMS: Free‐living amoebae (FLA) in aqueous systems are a problem for water network managers and health authorities because some are pathogenic, such as Naegleria fowleri, and they have also been reported to operate as reservoirs and vectors of several pathogenic bacteria. Therefore, to better control the occurrence of such amoebae, we evaluate the efficacy of monochloramine against planktonic forms (trophozoites and cysts) and also biofilm‐associated cells of N. fowleri as FLA are often associated with biofilms. METHODS AND RESULTS: From a freshwater biofilm growing in a pilot reactor and inoculated with N. fowleri, we obtained Ct values ranging from 4 to 17 mg Cl₂min l⁻¹at 25°C and pH 8·2 on both planktonic and biofilm associated cells. In addition, the inactivation pattern of biofilm associated was intermediate between those of trophozoïtes and cysts. CONCLUSIONS: The monochloramine efficiency varies with the life stage of N. fowleri (trophozoïte, cyst, and biofilm‐associated). The sensitivity to disinfectant of amoeba, that is, trophozoïtes and cysts, in the biofilm life stage is as high as that of their planktonic cyst form. SIGNIFICANCE AND IMPACT OF THE STUDY: This study gives Ct values for cysts and biofilm‐associated N. fowleri. This may impact on water treatment strategies against amoebae and should be considered when controlling N. fowleri in man‐made water systems such as cooling towers or hot water systems. |
| doi_str_mv | 10.1111/jam.12429 |
| format | Article |
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Therefore, to better control the occurrence of such amoebae, we evaluate the efficacy of monochloramine against planktonic forms (trophozoites and cysts) and also biofilm‐associated cells of N. fowleri as FLA are often associated with biofilms. METHODS AND RESULTS: From a freshwater biofilm growing in a pilot reactor and inoculated with N. fowleri, we obtained Ct values ranging from 4 to 17 mg Cl₂min l⁻¹at 25°C and pH 8·2 on both planktonic and biofilm associated cells. In addition, the inactivation pattern of biofilm associated was intermediate between those of trophozoïtes and cysts. CONCLUSIONS: The monochloramine efficiency varies with the life stage of N. fowleri (trophozoïte, cyst, and biofilm‐associated). The sensitivity to disinfectant of amoeba, that is, trophozoïtes and cysts, in the biofilm life stage is as high as that of their planktonic cyst form. SIGNIFICANCE AND IMPACT OF THE STUDY: This study gives Ct values for cysts and biofilm‐associated N. fowleri. This may impact on water treatment strategies against amoebae and should be considered when controlling N. fowleri in man‐made water systems such as cooling towers or hot water systems.</description><identifier>ISSN: 1364-5072</identifier><identifier>EISSN: 1365-2672</identifier><identifier>DOI: 10.1111/jam.12429</identifier><identifier>PMID: 24387688</identifier><identifier>CODEN: JAMIFK</identifier><language>eng</language><publisher>Oxford: Published for the Society for Applied Bacteriology by Blackwell Science</publisher><subject>Amoeba ; Bacteria ; Bacteriology ; biofilm ; Biofilms ; Biofilms - drug effects ; Biological and medical sciences ; Chloramines - pharmacology ; Ct value ; disinfectants ; Disinfectants - pharmacology ; Environment and Society ; Environmental Engineering ; Environmental Sciences ; Free‐living amoeba ; Fresh Water - parasitology ; freshwater ; freshwater biofilm ; Fundamental and applied biological sciences. Psychology ; Life Sciences ; managers ; Microbiology ; Microbiology and Parasitology ; monochloramine ; Naegleria fowleri ; Naegleria fowleri - drug effects ; Naegleria fowleri - growth & development ; Pathology ; Plankton - drug effects ; Santé publique et épidémiologie ; trophozoites ; Trophozoites - drug effects ; Water treatment</subject><ispartof>Journal of applied microbiology, 2014-04, Vol.116 (4), p.1055-1065</ispartof><rights>2014 The Society for Applied Microbiology</rights><rights>2015 INIST-CNRS</rights><rights>2014 The Society for Applied Microbiology.</rights><rights>Copyright © 2014 The Society for Applied Microbiology</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4419-9b2f246e794472f224ffc4c2c4a3769a560e72d58085de77fe6451cfd1686d0b3</citedby><cites>FETCH-LOGICAL-c4419-9b2f246e794472f224ffc4c2c4a3769a560e72d58085de77fe6451cfd1686d0b3</cites><orcidid>0000-0001-8747-1347</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2Fjam.12429$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Fjam.12429$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>230,314,776,780,881,1411,27901,27902,45550,45551</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=28283578$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24387688$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://hal.science/hal-01912961$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Goudot, S</creatorcontrib><creatorcontrib>Herbelin, P</creatorcontrib><creatorcontrib>Mathieu, L</creatorcontrib><creatorcontrib>Soreau, S</creatorcontrib><creatorcontrib>Banas, S</creatorcontrib><creatorcontrib>Jorand, F.P.A</creatorcontrib><title>Biocidal efficacy of monochloramine against planktonic and biofilm‐associated Naegleria fowleri cells</title><title>Journal of applied microbiology</title><addtitle>J Appl Microbiol</addtitle><description>AIMS: Free‐living amoebae (FLA) in aqueous systems are a problem for water network managers and health authorities because some are pathogenic, such as Naegleria fowleri, and they have also been reported to operate as reservoirs and vectors of several pathogenic bacteria. Therefore, to better control the occurrence of such amoebae, we evaluate the efficacy of monochloramine against planktonic forms (trophozoites and cysts) and also biofilm‐associated cells of N. fowleri as FLA are often associated with biofilms. METHODS AND RESULTS: From a freshwater biofilm growing in a pilot reactor and inoculated with N. fowleri, we obtained Ct values ranging from 4 to 17 mg Cl₂min l⁻¹at 25°C and pH 8·2 on both planktonic and biofilm associated cells. In addition, the inactivation pattern of biofilm associated was intermediate between those of trophozoïtes and cysts. CONCLUSIONS: The monochloramine efficiency varies with the life stage of N. fowleri (trophozoïte, cyst, and biofilm‐associated). The sensitivity to disinfectant of amoeba, that is, trophozoïtes and cysts, in the biofilm life stage is as high as that of their planktonic cyst form. SIGNIFICANCE AND IMPACT OF THE STUDY: This study gives Ct values for cysts and biofilm‐associated N. fowleri. This may impact on water treatment strategies against amoebae and should be considered when controlling N. fowleri in man‐made water systems such as cooling towers or hot water systems.</description><subject>Amoeba</subject><subject>Bacteria</subject><subject>Bacteriology</subject><subject>biofilm</subject><subject>Biofilms</subject><subject>Biofilms - drug effects</subject><subject>Biological and medical sciences</subject><subject>Chloramines - pharmacology</subject><subject>Ct value</subject><subject>disinfectants</subject><subject>Disinfectants - pharmacology</subject><subject>Environment and Society</subject><subject>Environmental Engineering</subject><subject>Environmental Sciences</subject><subject>Free‐living amoeba</subject><subject>Fresh Water - parasitology</subject><subject>freshwater</subject><subject>freshwater biofilm</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Life Sciences</subject><subject>managers</subject><subject>Microbiology</subject><subject>Microbiology and Parasitology</subject><subject>monochloramine</subject><subject>Naegleria fowleri</subject><subject>Naegleria fowleri - drug effects</subject><subject>Naegleria fowleri - growth & development</subject><subject>Pathology</subject><subject>Plankton - drug effects</subject><subject>Santé publique et épidémiologie</subject><subject>trophozoites</subject><subject>Trophozoites - drug effects</subject><subject>Water treatment</subject><issn>1364-5072</issn><issn>1365-2672</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp1ks1uEzEUhUcIRH9gwQuAJVSpLKa1PR7bswxVoaAAC-jauvHYqYPHDnZClV0fgWfsk-Bp0lZCwhtfXX0-514dV9Urgk9IOacLGE4IZbR7Uu2Thrc15YI-vatZ3WJB96qDnBcYkwa3_Hm1R1kjBZdyv5q_d1G7Hjwy1joNeoOiRUMMUV_5mGBwwSCYgwt5hZYews9VDE4jCD2auWidH25v_kDORQVWpkdfwcy9SQ6QjddjgbTxPr-onlnw2bzc3YfV5YfzH2cX9fTbx09nk2mtGSNd3c2opYwb0TEmSkmZtZppqhk0gnfQcmwE7VuJZdsbIazhrCXa9oRL3uNZc1i92-pegVfL5AZIGxXBqYvJVI09TDpCO05-k8Ieb9llir_WJq_U4PI4LQQT11mRFksuuk6Igr79B13EdQplk5ESQmCOxaO5TjHnZOzDBASrMSlVklJ3SRX29U5xPRtM_0DeR1OAox0AWYO3CYJ2-ZGTVDatGLnTLXftvNn831F9nny5t36zfWEhKpinonr5neKyCCZM8PJL_gIKsLLX</recordid><startdate>201404</startdate><enddate>201404</enddate><creator>Goudot, S</creator><creator>Herbelin, P</creator><creator>Mathieu, L</creator><creator>Soreau, S</creator><creator>Banas, S</creator><creator>Jorand, F.P.A</creator><general>Published for the Society for Applied Bacteriology by Blackwell Science</general><general>Blackwell</general><general>Oxford University Press</general><general>Wiley</general><scope>FBQ</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QL</scope><scope>7QO</scope><scope>7T7</scope><scope>7TM</scope><scope>7U7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>M7N</scope><scope>P64</scope><scope>RC3</scope><scope>7X8</scope><scope>1XC</scope><orcidid>https://orcid.org/0000-0001-8747-1347</orcidid></search><sort><creationdate>201404</creationdate><title>Biocidal efficacy of monochloramine against planktonic and biofilm‐associated Naegleria fowleri cells</title><author>Goudot, S ; Herbelin, P ; Mathieu, L ; Soreau, S ; Banas, S ; Jorand, F.P.A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4419-9b2f246e794472f224ffc4c2c4a3769a560e72d58085de77fe6451cfd1686d0b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Amoeba</topic><topic>Bacteria</topic><topic>Bacteriology</topic><topic>biofilm</topic><topic>Biofilms</topic><topic>Biofilms - drug effects</topic><topic>Biological and medical sciences</topic><topic>Chloramines - pharmacology</topic><topic>Ct value</topic><topic>disinfectants</topic><topic>Disinfectants - pharmacology</topic><topic>Environment and Society</topic><topic>Environmental Engineering</topic><topic>Environmental Sciences</topic><topic>Free‐living amoeba</topic><topic>Fresh Water - parasitology</topic><topic>freshwater</topic><topic>freshwater biofilm</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Life Sciences</topic><topic>managers</topic><topic>Microbiology</topic><topic>Microbiology and Parasitology</topic><topic>monochloramine</topic><topic>Naegleria fowleri</topic><topic>Naegleria fowleri - drug effects</topic><topic>Naegleria fowleri - growth & development</topic><topic>Pathology</topic><topic>Plankton - drug effects</topic><topic>Santé publique et épidémiologie</topic><topic>trophozoites</topic><topic>Trophozoites - drug effects</topic><topic>Water treatment</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Goudot, S</creatorcontrib><creatorcontrib>Herbelin, P</creatorcontrib><creatorcontrib>Mathieu, L</creatorcontrib><creatorcontrib>Soreau, S</creatorcontrib><creatorcontrib>Banas, S</creatorcontrib><creatorcontrib>Jorand, F.P.A</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Biotechnology Research Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Nucleic Acids Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><collection>MEDLINE - Academic</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Journal of applied microbiology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Goudot, S</au><au>Herbelin, P</au><au>Mathieu, L</au><au>Soreau, S</au><au>Banas, S</au><au>Jorand, F.P.A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Biocidal efficacy of monochloramine against planktonic and biofilm‐associated Naegleria fowleri cells</atitle><jtitle>Journal of applied microbiology</jtitle><addtitle>J Appl Microbiol</addtitle><date>2014-04</date><risdate>2014</risdate><volume>116</volume><issue>4</issue><spage>1055</spage><epage>1065</epage><pages>1055-1065</pages><issn>1364-5072</issn><eissn>1365-2672</eissn><coden>JAMIFK</coden><abstract>AIMS: Free‐living amoebae (FLA) in aqueous systems are a problem for water network managers and health authorities because some are pathogenic, such as Naegleria fowleri, and they have also been reported to operate as reservoirs and vectors of several pathogenic bacteria. Therefore, to better control the occurrence of such amoebae, we evaluate the efficacy of monochloramine against planktonic forms (trophozoites and cysts) and also biofilm‐associated cells of N. fowleri as FLA are often associated with biofilms. METHODS AND RESULTS: From a freshwater biofilm growing in a pilot reactor and inoculated with N. fowleri, we obtained Ct values ranging from 4 to 17 mg Cl₂min l⁻¹at 25°C and pH 8·2 on both planktonic and biofilm associated cells. In addition, the inactivation pattern of biofilm associated was intermediate between those of trophozoïtes and cysts. CONCLUSIONS: The monochloramine efficiency varies with the life stage of N. fowleri (trophozoïte, cyst, and biofilm‐associated). The sensitivity to disinfectant of amoeba, that is, trophozoïtes and cysts, in the biofilm life stage is as high as that of their planktonic cyst form. SIGNIFICANCE AND IMPACT OF THE STUDY: This study gives Ct values for cysts and biofilm‐associated N. fowleri. This may impact on water treatment strategies against amoebae and should be considered when controlling N. fowleri in man‐made water systems such as cooling towers or hot water systems.</abstract><cop>Oxford</cop><pub>Published for the Society for Applied Bacteriology by Blackwell Science</pub><pmid>24387688</pmid><doi>10.1111/jam.12429</doi><tpages>11</tpages><orcidid>https://orcid.org/0000-0001-8747-1347</orcidid></addata></record> |
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| ispartof | Journal of applied microbiology, 2014-04, Vol.116 (4), p.1055-1065 |
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| source | Oxford University Press Journals All Titles (1996-Current); MEDLINE; Wiley Online Library Journals Frontfile Complete |
| subjects | Amoeba Bacteria Bacteriology biofilm Biofilms Biofilms - drug effects Biological and medical sciences Chloramines - pharmacology Ct value disinfectants Disinfectants - pharmacology Environment and Society Environmental Engineering Environmental Sciences Free‐living amoeba Fresh Water - parasitology freshwater freshwater biofilm Fundamental and applied biological sciences. Psychology Life Sciences managers Microbiology Microbiology and Parasitology monochloramine Naegleria fowleri Naegleria fowleri - drug effects Naegleria fowleri - growth & development Pathology Plankton - drug effects Santé publique et épidémiologie trophozoites Trophozoites - drug effects Water treatment |
| title | Biocidal efficacy of monochloramine against planktonic and biofilm‐associated Naegleria fowleri cells |
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