Sensitivity of free-living amoeba trophozoites and cysts to water disinfectants
| Autor: | Yann Héchard, Pascaline Herbelin, Nelsie Berthelot, Marie Binet, Sylvie Soreau, Mathieu Dupuy, Marie-Hélène Rodier, Florence Berne |
|---|---|
| Přispěvatelé: | Ecologie et biologie des interactions (EBI), Université de Poitiers-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers-Institut de Chimie du CNRS (INC), Microbiologie de l'Eau (MDE), Université de Poitiers-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2014 |
| Předmět: |
Biocide
food.ingredient Disinfectant chemistry.chemical_element Acanthamoeba macromolecular substances 010501 environmental sciences medicine.disease_cause 01 natural sciences Water Purification Microbiology Amoeba (genus) 03 medical and health sciences chemistry.chemical_compound food parasitic diseases medicine Chlorine Humans Trophozoites Amoeba 0105 earth and related environmental sciences 0303 health sciences Chlorine dioxide Bacteria biology Cysts 030306 microbiology Chloramines Public Health Environmental and Occupational Health Oxides Pathogenic bacteria biology.organism_classification 6. Clean water [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology chemistry Protozoa Chlorine Compounds Disinfectants |
| Zdroj: | International Journal of Hygiene and Environmental Health International Journal of Hygiene and Environmental Health, Elsevier, 2014, 217, pp.335-339. ⟨10.1016/j.ijheh.2013.07.007⟩ |
| ISSN: | 1438-4639 |
| DOI: | 10.1016/j.ijheh.2013.07.007 |
| Popis: | International audience; : Free-living amoebae are naturally present in water. These protozoa could be pathogenic and could also shelter pathogenic bacteria. Thus, they are described as a potential hazard for health. Also, free-living amoebae have been described to be resistant to biocides, especially under their cyst resistant form. There are several studies on amoeba treatments but none of them compare sensitivity of trophozoites and cysts from different genus to various water disinfectants. In our study, we tested chlorine, monochloramine and chlorine dioxide on both cysts and trophozoites from three strains, belonging to the three main genera of free-living amoebae. The results show that, comparing cysts to trophozoites inactivation, only the Acanthamoeba cysts were highly more resistant to treatment than trophozoites. Comparison of the disinfectant efficiency led to conclude that chlorine dioxide was the most efficient treatment in our conditions and was particularly efficient against cysts. In conclusion, our results would help to adapt water treatments in order to target free-living amoebae in water networks. |
| Databáze: | OpenAIRE |
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