Hepatic Microsomal Monooxygenase Activity and the Biotransformation of Hydrocarbons in Deep Benthic Fish from the Western North Atlantic
Microsomal electron transfer components cytochrome P-450, cytochrome b 5 , NADPH-cytochrome c (P-450) reductase activity and NADH-cytochrome c (b 5 ) reductase activity were present in hepatic microsomes from several species of deep-sea fishes sampled between 1400 and 3200 m deep in the North Atlant...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Canadian Science Publishing
1983
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Online Access: | http://dx.doi.org/10.1139/f83-313 http://www.nrcresearchpress.com/doi/pdf/10.1139/f83-313 |
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crcansciencepubl:10.1139/f83-313 2024-04-28T08:30:13+00:00 Hepatic Microsomal Monooxygenase Activity and the Biotransformation of Hydrocarbons in Deep Benthic Fish from the Western North Atlantic Stegeman, John J. 1983 http://dx.doi.org/10.1139/f83-313 http://www.nrcresearchpress.com/doi/pdf/10.1139/f83-313 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 40, issue S2, page s78-s85 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1983 crcansciencepubl https://doi.org/10.1139/f83-313 2024-04-02T06:55:51Z Microsomal electron transfer components cytochrome P-450, cytochrome b 5 , NADPH-cytochrome c (P-450) reductase activity and NADH-cytochrome c (b 5 ) reductase activity were present in hepatic microsomes from several species of deep-sea fishes sampled between 1400 and 3200 m deep in the North Atlantic. The specific content of cytochrome P-450 varied among the species but was within the range observed for shallow-water fishes. The specific content was the highest in the deepest sampled species, Coryphaenoides armatus (0.25 nmol/mg microsomal protein). Hepatic microsomes from this species also exhibited little or no putative cytochrome P-420 whose presence suggested some degradation of cytochrome P-450 in the other species. Ethoxyresorufin O-deethylase and benzo[a]pyrene hydroxylase activities were high in several species, particularly Coryphaenoides armatus. Strong inhibition of benzo[a]pyrene hydroxylase activity by α-naphthoflavone was demonstrated in some species. The data suggest that some hepatic cytochrome P-450 in Coryphaenoides armatus (and possibly Coryphaenoides leptolepis and Bathysaurus mollis) but not in Coryphaenoides rupestris or Antimora rostrata may have been induced by environmental chemicals in the deep sea. As in other teleost fishes, Coryphaenoides hepatic microsomes metabolized benzo[a]pyrene in vitro with a high specificity for the benzo-ring, suggesting the capacity to form mutagenic derivatives of some hydrocarbons efficiently. Article in Journal/Newspaper North Atlantic Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 40 S2 s78 s85 |
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Open Polar |
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Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Stegeman, John J. Hepatic Microsomal Monooxygenase Activity and the Biotransformation of Hydrocarbons in Deep Benthic Fish from the Western North Atlantic |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Microsomal electron transfer components cytochrome P-450, cytochrome b 5 , NADPH-cytochrome c (P-450) reductase activity and NADH-cytochrome c (b 5 ) reductase activity were present in hepatic microsomes from several species of deep-sea fishes sampled between 1400 and 3200 m deep in the North Atlantic. The specific content of cytochrome P-450 varied among the species but was within the range observed for shallow-water fishes. The specific content was the highest in the deepest sampled species, Coryphaenoides armatus (0.25 nmol/mg microsomal protein). Hepatic microsomes from this species also exhibited little or no putative cytochrome P-420 whose presence suggested some degradation of cytochrome P-450 in the other species. Ethoxyresorufin O-deethylase and benzo[a]pyrene hydroxylase activities were high in several species, particularly Coryphaenoides armatus. Strong inhibition of benzo[a]pyrene hydroxylase activity by α-naphthoflavone was demonstrated in some species. The data suggest that some hepatic cytochrome P-450 in Coryphaenoides armatus (and possibly Coryphaenoides leptolepis and Bathysaurus mollis) but not in Coryphaenoides rupestris or Antimora rostrata may have been induced by environmental chemicals in the deep sea. As in other teleost fishes, Coryphaenoides hepatic microsomes metabolized benzo[a]pyrene in vitro with a high specificity for the benzo-ring, suggesting the capacity to form mutagenic derivatives of some hydrocarbons efficiently. |
format |
Article in Journal/Newspaper |
author |
Stegeman, John J. |
author_facet |
Stegeman, John J. |
author_sort |
Stegeman, John J. |
title |
Hepatic Microsomal Monooxygenase Activity and the Biotransformation of Hydrocarbons in Deep Benthic Fish from the Western North Atlantic |
title_short |
Hepatic Microsomal Monooxygenase Activity and the Biotransformation of Hydrocarbons in Deep Benthic Fish from the Western North Atlantic |
title_full |
Hepatic Microsomal Monooxygenase Activity and the Biotransformation of Hydrocarbons in Deep Benthic Fish from the Western North Atlantic |
title_fullStr |
Hepatic Microsomal Monooxygenase Activity and the Biotransformation of Hydrocarbons in Deep Benthic Fish from the Western North Atlantic |
title_full_unstemmed |
Hepatic Microsomal Monooxygenase Activity and the Biotransformation of Hydrocarbons in Deep Benthic Fish from the Western North Atlantic |
title_sort |
hepatic microsomal monooxygenase activity and the biotransformation of hydrocarbons in deep benthic fish from the western north atlantic |
publisher |
Canadian Science Publishing |
publishDate |
1983 |
url |
http://dx.doi.org/10.1139/f83-313 http://www.nrcresearchpress.com/doi/pdf/10.1139/f83-313 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 40, issue S2, page s78-s85 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f83-313 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
40 |
container_issue |
S2 |
container_start_page |
s78 |
op_container_end_page |
s85 |
_version_ |
1797588161351647232 |