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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | François, Gagné Mélanie, Douville Marlène, Fortier Michel, Fournier |
| Description | Author Affiliation: François G ( Aquatic Contaminants Research Division, Water Science and Technology, 105 McGill, Montreal, QC H27 2E7, Canada. Electronic address: francois.gagne@ec.gc.ca.); Mélanie D ( Aquatic Contaminants Research Division, Water Science and Technology, 105 McGill, Montreal, QC H27 2E7, Canada.); Marlène F ( INRS-Institut Armand-Frappier, 531 Rue des Prairies, Laval, Quebec H7V 1B7, Canada.); Michel F ( INRS-Institut Armand-Frappier, 531 Rue des Prairies, Laval, Quebec H7V 1B7, Canada.) |
| Abstract | The purpose of this study was to examine the cumulative effects of exposure to a pathogenic bacteria and municipal effluent in the freshwater mussel Elliptio complanata. Mussels were exposed to increasing concentrations of an ozone-treated effluent at 15°C for 7days. A sub-group of mussels was inoculated with Vibrio anguillarum and exposed to the same conditions as above. After the exposure period, mussels were collected to assess hemocyte count and viability, immunocompetence (phagocytosis and nitrite production), oxidative stress/inflammation (cyclooxygenase and lipid peroxidation) and oxygen radical/xenobiotic scavenging activity (metallothioniens, glutathione S-transferase). The results showed that mussels exposed to municipal effluent had increased hemocyte counts, phagocytosis, nitrites, lipid peroxidation and metallothioneins. In the inoculated mussels, the same responses were observed, in addition to cyclooxygenase and glutathione S-transferase activities. Multivariate analyses revealed that (1) the response pattern changed with effluent concentration, where increased responses observed at low effluent concentrations (>10%, V/V) were attenuated at higher effluent concentrations, (2) the effluent produced more pronounced changes in lipid peroxidation, metallothionein and hemocyte viability, and (3) the simultaneous presence of V. anguillarum led to more important changes in hemocyte count and viability and nitrite levels. In conclusion, the presence of V. anguillarum could alter the response of mussels to municipal effluent, which could lead to increased inflammation in mussels. |
| File Format | HTM / HTML |
| ISSN | 10010742 |
| Volume Number | 37 |
| Journal | Journal of Environmental Sciences |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2015-11-01 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Environmental Health Bivalvia Drug Effects Microbiology Cities Ecotoxicology Fresh Water Vibrio Physiology Waste Water Chemistry Animals Immunology Metabolism Hemocytes Cytology Immunocompetence Lipid Peroxidation Metallothionein Oxidative Stress Time Factors Water Pollutants, Chemical Toxicity Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Medicine Environmental Engineering |
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