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http://hdl.handle.net/10773/11061
Título: | Glutathione and its dependent enzymes' modulatory responses to toxic metals and metalloids in fish: a review |
Autor: | Srikanth, K. Pereira, E. Duarte, A. C. Ahmad, I. |
Palavras-chave: | Fish Metal Metalloids Oxidative stress Glutathione metabolism |
Data: | 2013 |
Editora: | Springer Verlag |
Resumo: | Toxic metals and metalloid are being rapidly added from multiple pathways to aquatic ecosystem and causing severe threats to inhabiting fauna including fish. Being common in all the type of aquatic ecosystems such as freshwater, marine and brackish water fish are the first to get prone to toxic metals and metalloids. In addition to a number of physiological/biochemical alterations, toxic metals and metalloids cause enhanced generation of varied reactive oxygen species (ROS) ultimately leading to a situ- ation called oxidative stress. However, as an important com- ponent of antioxidant defence system in fish, the tripeptide glutathione (GSH) directly or indirectly regulates the scav- enging of ROS and their reaction products. Additionally, several other GSH-associated enzymes such as GSH reduc- tase (GR, EC 1.6.4.2), GSH peroxidase (EC 1.11.1.9), and GSH sulfotransferase (glutathione-S-transferase (GST), EC 2.5.1.18) cumulatively protect fish against ROS and their reaction products accrued anomalies under toxic metals and metalloids stress conditions. The current review highlights recent research findings on the modulation of GSH, its redox couple (reduced glutathione/oxidised glutathione), and other GSH-related enzymes (GR, glutathione peroxidase, GST) involved in the detoxification of harmful ROS and their reaction products in toxic metals and metalloids-exposed fish. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/11061 |
DOI: | 10.1007/s11356-012-1459-y |
ISSN: | 0944-1344 |
Aparece nas coleções: | CESAM - Artigos DBio - Artigos DQ - Artigos PT Mar - Artigos Ria de Aveiro - Artigos |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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1_Glutathione and its dependent enzymes.pdf | 419.08 kB | Adobe PDF |
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