The response of digestive proteases to abrupt salinity decrease in the euryhaline sparid Sparus aurata L
The response of the digestive proteases to abrupt salinity change was studied in juvenile gilthead sea bream (Sparus aurata) for 15 days after transfer from 33 parts per thousand to 21 parts per thousand. Salinity decrease affected significantly neither the activity of total acid proteases in stomac...
Published in: | Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology |
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Online Access: | http://hdl.handle.net/11615/32538 https://doi.org/10.1016/j.cbpb.2006.12.021 |
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ftunivthessaly:oai:ir.lib.uth.gr:11615/32538 2023-05-15T18:09:56+02:00 The response of digestive proteases to abrupt salinity decrease in the euryhaline sparid Sparus aurata L Psochiou, E. Mamuris, Z. Panagiotaki, P. Kouretas, D. Moutou, K. A. 2007 http://hdl.handle.net/11615/32538 https://doi.org/10.1016/j.cbpb.2006.12.021 unknown doi:10.1016/j.cbpb.2006.12.021 1096-4959 http://hdl.handle.net/11615/32538 <Go to ISI>://WOS:000246544100002 carboxypeptidases chymotrypsin digestive proteases elastase salinity Sparus aurata trypsin GILTHEAD SEA BREAM TURBOT SCOPHTHALMUS-MAXIMUS SALMO-SALAR L FRESH-WATER ENERGY-METABOLISM PYLORIC CECA TIME-COURSE GROWTH FISH ACCLIMATION Biochemistry & Molecular Biology Zoology journalArticle 2007 ftunivthessaly https://doi.org/10.1016/j.cbpb.2006.12.021 2021-07-02T06:24:33Z The response of the digestive proteases to abrupt salinity change was studied in juvenile gilthead sea bream (Sparus aurata) for 15 days after transfer from 33 parts per thousand to 21 parts per thousand. Salinity decrease affected significantly neither the activity of total acid proteases in stomach, nor the activities of total alkaline proteases and major serine proteases - trypsin and chymotrypsin - in the alkaline part of the intestine. The activity of the major proteases was significantly different between the alkaline segments of the intestine, with the posterior intestine presenting the highest activities followed by the pyloric caeca. This distribution pattern remained unaffected by salinity decrease. Notably, salinity change led to significant alterations in elastase and carboxypeptidase activity. The changes were more prominent in the upper part of the intestine (pyloric caeca and anterior intestine) than in the posterior intestine. In pyloric caeca significant alteration of carboxypeptidase A and B activities was observed, elastase changes were confined to anterior intestine together with alterations in carboxypeptidase B activity, while in posterior intestine the changes were restricted to carboxypeptidase A activity. The results are discussed in relation to the osmoregulatory action of the intestinal segments and dietary protein digestion. (C) 2007 Elsevier Inc. All rights reserved. Article in Journal/Newspaper Salmo salar Scophthalmus maximus Turbot University of Thessaly Institutional Repository Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology 147 2 156 163 |
institution |
Open Polar |
collection |
University of Thessaly Institutional Repository |
op_collection_id |
ftunivthessaly |
language |
unknown |
topic |
carboxypeptidases chymotrypsin digestive proteases elastase salinity Sparus aurata trypsin GILTHEAD SEA BREAM TURBOT SCOPHTHALMUS-MAXIMUS SALMO-SALAR L FRESH-WATER ENERGY-METABOLISM PYLORIC CECA TIME-COURSE GROWTH FISH ACCLIMATION Biochemistry & Molecular Biology Zoology |
spellingShingle |
carboxypeptidases chymotrypsin digestive proteases elastase salinity Sparus aurata trypsin GILTHEAD SEA BREAM TURBOT SCOPHTHALMUS-MAXIMUS SALMO-SALAR L FRESH-WATER ENERGY-METABOLISM PYLORIC CECA TIME-COURSE GROWTH FISH ACCLIMATION Biochemistry & Molecular Biology Zoology Psochiou, E. Mamuris, Z. Panagiotaki, P. Kouretas, D. Moutou, K. A. The response of digestive proteases to abrupt salinity decrease in the euryhaline sparid Sparus aurata L |
topic_facet |
carboxypeptidases chymotrypsin digestive proteases elastase salinity Sparus aurata trypsin GILTHEAD SEA BREAM TURBOT SCOPHTHALMUS-MAXIMUS SALMO-SALAR L FRESH-WATER ENERGY-METABOLISM PYLORIC CECA TIME-COURSE GROWTH FISH ACCLIMATION Biochemistry & Molecular Biology Zoology |
description |
The response of the digestive proteases to abrupt salinity change was studied in juvenile gilthead sea bream (Sparus aurata) for 15 days after transfer from 33 parts per thousand to 21 parts per thousand. Salinity decrease affected significantly neither the activity of total acid proteases in stomach, nor the activities of total alkaline proteases and major serine proteases - trypsin and chymotrypsin - in the alkaline part of the intestine. The activity of the major proteases was significantly different between the alkaline segments of the intestine, with the posterior intestine presenting the highest activities followed by the pyloric caeca. This distribution pattern remained unaffected by salinity decrease. Notably, salinity change led to significant alterations in elastase and carboxypeptidase activity. The changes were more prominent in the upper part of the intestine (pyloric caeca and anterior intestine) than in the posterior intestine. In pyloric caeca significant alteration of carboxypeptidase A and B activities was observed, elastase changes were confined to anterior intestine together with alterations in carboxypeptidase B activity, while in posterior intestine the changes were restricted to carboxypeptidase A activity. The results are discussed in relation to the osmoregulatory action of the intestinal segments and dietary protein digestion. (C) 2007 Elsevier Inc. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Psochiou, E. Mamuris, Z. Panagiotaki, P. Kouretas, D. Moutou, K. A. |
author_facet |
Psochiou, E. Mamuris, Z. Panagiotaki, P. Kouretas, D. Moutou, K. A. |
author_sort |
Psochiou, E. |
title |
The response of digestive proteases to abrupt salinity decrease in the euryhaline sparid Sparus aurata L |
title_short |
The response of digestive proteases to abrupt salinity decrease in the euryhaline sparid Sparus aurata L |
title_full |
The response of digestive proteases to abrupt salinity decrease in the euryhaline sparid Sparus aurata L |
title_fullStr |
The response of digestive proteases to abrupt salinity decrease in the euryhaline sparid Sparus aurata L |
title_full_unstemmed |
The response of digestive proteases to abrupt salinity decrease in the euryhaline sparid Sparus aurata L |
title_sort |
response of digestive proteases to abrupt salinity decrease in the euryhaline sparid sparus aurata l |
publishDate |
2007 |
url |
http://hdl.handle.net/11615/32538 https://doi.org/10.1016/j.cbpb.2006.12.021 |
genre |
Salmo salar Scophthalmus maximus Turbot |
genre_facet |
Salmo salar Scophthalmus maximus Turbot |
op_source |
<Go to ISI>://WOS:000246544100002 |
op_relation |
doi:10.1016/j.cbpb.2006.12.021 1096-4959 http://hdl.handle.net/11615/32538 |
op_doi |
https://doi.org/10.1016/j.cbpb.2006.12.021 |
container_title |
Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology |
container_volume |
147 |
container_issue |
2 |
container_start_page |
156 |
op_container_end_page |
163 |
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1766182633783427072 |