Field contamination of the starfish Asterias rubens by metals. Part 2: Effects on cellular immunity
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| Názov: | Field contamination of the starfish Asterias rubens by metals. Part 2: Effects on cellular immunity |
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| Autori: | Coteur, Geoffroy, Gillan, David, Joly, Guillemette, Pernet, Philippe, Dubois, Philippe |
| Zdroj: | Environmental Toxicology and Chemistry. 22:2145-2151 |
| Informácie o vydavateľovi: | Oxford University Press (OUP), 2003. |
| Rok vydania: | 2003 |
| Predmety: | 0301 basic medicine, Physiological, Sodium Chloride -- analysis, Sodium Chloride, Biologie des milieux particuliers, Starfish, 03 medical and health sciences, Metals, Heavy, Water Pollutants -- toxicity, Animals, Seawater, Water Pollutants, 14. Life underwater, Adaptation, Immunity, Cellular, Immunity, Environmental Exposure, 04 agricultural and veterinary sciences, Starfish -- immunology, Biologie marine, Adaptation, Physiological, 3. Good health, Heavy -- toxicity, Metals, 13. Climate action, 0401 agriculture, forestry, and fisheries, Cellular -- drug effects |
| Popis: | To study the effects of matals on starfish in field conditions, immune responses measured in starfish from natural populations along a metal pollution gradient (long-term contamination) and in starfish that were transferred up the gradient (short-term contamination). Coelomic amoebocyte concentration (CAC) and production oh reactive oxygen species (ROS) by amoebocytes were measured in two varieties oh Asterias rubens occurring in the fjord: The black variety which lives only in the low salinity upper waters (22-26‰) and the red variety which live both in the upper layer and in the deeper layer characteruzed by a salinity close to that oh seawater (30‰). The studied immune response were stimulated in starfish living along the metal pollution gradient according to the contamination oh these starfish by cadmium. However, the sensitivity oh these responses toward metals appeared to be strongly modulated by the salinity stress. In red starfish living at 30‰ and transferred up the contamination gradient, the immune responses were inhibited and closely hollowed the short-term accumulation oh metals in the animal organs. Starfish transferred down the gradient did not recover normal immune responses in the short-term and appeared highly sensitive to caging stress. It is suggested that the impact oh metals on the immune responses oh A. rubens in field conditions occurs in three phases. Short-term inhibitory effects are exerted by a direct action of metals on the immune cells and are followed by a recovery due to the induction oh protective mechanisms. Eventually, when these mechanisms are overwhelmed by a long-term contamination, indirect and durable stimulatory effects on the immune responses appear due to a global disruption oh the animal physiology. |
| Druh dokumentu: | Article |
| Popis súboru: | 1 full-text file(s): application/pdf |
| Jazyk: | English |
| ISSN: | 1552-8618 0730-7268 |
| DOI: | 10.1897/02-490 |
| Prístupová URL adresa: | https://pubmed.ncbi.nlm.nih.gov/12959543 https://www.ncbi.nlm.nih.gov/pubmed/12959543 http://onlinelibrary.wiley.com/doi/10.1897/02-490/full http://europepmc.org/abstract/MED/12959543 http://doi.wiley.com/10.1897/02-490 https://setac.onlinelibrary.wiley.com/doi/abs/10.1897/02-490 https://difusion.ulb.ac.be/vufind/Record/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/115808/Details |
| Rights: | Wiley Online Library User Agreement |
| Prístupové číslo: | edsair.doi.dedup.....02523cd6244216e998c943d8af814d23 |
| Databáza: | OpenAIRE |
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Nájsť tento článok vo Web of Science | Abstrakt: | To study the effects of matals on starfish in field conditions, immune responses measured in starfish from natural populations along a metal pollution gradient (long-term contamination) and in starfish that were transferred up the gradient (short-term contamination). Coelomic amoebocyte concentration (CAC) and production oh reactive oxygen species (ROS) by amoebocytes were measured in two varieties oh Asterias rubens occurring in the fjord: The black variety which lives only in the low salinity upper waters (22-26‰) and the red variety which live both in the upper layer and in the deeper layer characteruzed by a salinity close to that oh seawater (30‰). The studied immune response were stimulated in starfish living along the metal pollution gradient according to the contamination oh these starfish by cadmium. However, the sensitivity oh these responses toward metals appeared to be strongly modulated by the salinity stress. In red starfish living at 30‰ and transferred up the contamination gradient, the immune responses were inhibited and closely hollowed the short-term accumulation oh metals in the animal organs. Starfish transferred down the gradient did not recover normal immune responses in the short-term and appeared highly sensitive to caging stress. It is suggested that the impact oh metals on the immune responses oh A. rubens in field conditions occurs in three phases. Short-term inhibitory effects are exerted by a direct action of metals on the immune cells and are followed by a recovery due to the induction oh protective mechanisms. Eventually, when these mechanisms are overwhelmed by a long-term contamination, indirect and durable stimulatory effects on the immune responses appear due to a global disruption oh the animal physiology. |
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| ISSN: | 15528618 07307268 |
| DOI: | 10.1897/02-490 |