Effects of growth hormone on gill chloride cells in juvenile Atlantic salmon (Salmo salar)
Experiments were performed to investigate the effects of ovine growth hormone (oGH) on both the ultrastructural features of chloride cells and the ability of gills to extrude Na+ after transfer into seawater. February presmolts and June parrs of the Atlantic salmon (Salmo salar) were implanted with...
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ftinraparis:oai:prodinra.inra.fr:110809 2023-05-15T15:30:36+02:00 Effects of growth hormone on gill chloride cells in juvenile Atlantic salmon (Salmo salar) Prunet, Patrick Pisam, Claireaux, Boeuf, Rambourg 1994 application/pdf http://prodinra.inra.fr/ft/8BA171A1-0A9A-41B9-957F-608E35C6A9B2 http://prodinra.inra.fr/record/110809 eng eng http://creativecommons.org/licenses/by-nd-nc/1.0/ CC-BY-ND-NC American Journal of Physiology (266), R850-R857. (1994) fish;atlantic salmon;sodium extrusion;parr-smolt transformation saumon de l'atlantique salmo salar poisson salmonidae cellule à chlorure culture cellulaire branchie comportement ARTICLE 1994 ftinraparis 2018-02-06T23:24:42Z Experiments were performed to investigate the effects of ovine growth hormone (oGH) on both the ultrastructural features of chloride cells and the ability of gills to extrude Na+ after transfer into seawater. February presmolts and June parrs of the Atlantic salmon (Salmo salar) were implanted with oGH. In such animals, spontaneously showing a poor ability to adapt themselves to seawater Life, GH significantly increased gill Na+-K+-adenosinetriphosphatase activity as well as gill sodium efflux into seawater. When examined by electron microscope, two types of chloride cells (alpha- and beta-types) were identified in control parrs and presmolts. GH treatment induced an increase in size and number of alpha-cells that displayed an extensive tubular system, while the beta-cells, thought to be specific to freshwater life, decreased in number. There was, concomitantly, an increase in number of accessory cells associated with the apical portion of the alpha-cells and, as a result, the formation of extensive shallow junctions between these cell types. Such functional and ultrastructural modifications that mimicked those naturally occurring during the last steps of the smoltification strongly suggest that GH stimulates the differentiation of freshwater chloride cells toward a seawater type. Article in Journal/Newspaper Atlantic salmon Salmo salar Institut National de la Recherche Agronomique: ProdINRA |
institution |
Open Polar |
collection |
Institut National de la Recherche Agronomique: ProdINRA |
op_collection_id |
ftinraparis |
language |
English |
topic |
fish;atlantic salmon;sodium extrusion;parr-smolt transformation saumon de l'atlantique salmo salar poisson salmonidae cellule à chlorure culture cellulaire branchie comportement |
spellingShingle |
fish;atlantic salmon;sodium extrusion;parr-smolt transformation saumon de l'atlantique salmo salar poisson salmonidae cellule à chlorure culture cellulaire branchie comportement Prunet, Patrick Pisam, Claireaux, Boeuf, Rambourg Effects of growth hormone on gill chloride cells in juvenile Atlantic salmon (Salmo salar) |
topic_facet |
fish;atlantic salmon;sodium extrusion;parr-smolt transformation saumon de l'atlantique salmo salar poisson salmonidae cellule à chlorure culture cellulaire branchie comportement |
description |
Experiments were performed to investigate the effects of ovine growth hormone (oGH) on both the ultrastructural features of chloride cells and the ability of gills to extrude Na+ after transfer into seawater. February presmolts and June parrs of the Atlantic salmon (Salmo salar) were implanted with oGH. In such animals, spontaneously showing a poor ability to adapt themselves to seawater Life, GH significantly increased gill Na+-K+-adenosinetriphosphatase activity as well as gill sodium efflux into seawater. When examined by electron microscope, two types of chloride cells (alpha- and beta-types) were identified in control parrs and presmolts. GH treatment induced an increase in size and number of alpha-cells that displayed an extensive tubular system, while the beta-cells, thought to be specific to freshwater life, decreased in number. There was, concomitantly, an increase in number of accessory cells associated with the apical portion of the alpha-cells and, as a result, the formation of extensive shallow junctions between these cell types. Such functional and ultrastructural modifications that mimicked those naturally occurring during the last steps of the smoltification strongly suggest that GH stimulates the differentiation of freshwater chloride cells toward a seawater type. |
format |
Article in Journal/Newspaper |
author |
Prunet, Patrick Pisam, Claireaux, Boeuf, Rambourg |
author_facet |
Prunet, Patrick Pisam, Claireaux, Boeuf, Rambourg |
author_sort |
Prunet, Patrick |
title |
Effects of growth hormone on gill chloride cells in juvenile Atlantic salmon (Salmo salar) |
title_short |
Effects of growth hormone on gill chloride cells in juvenile Atlantic salmon (Salmo salar) |
title_full |
Effects of growth hormone on gill chloride cells in juvenile Atlantic salmon (Salmo salar) |
title_fullStr |
Effects of growth hormone on gill chloride cells in juvenile Atlantic salmon (Salmo salar) |
title_full_unstemmed |
Effects of growth hormone on gill chloride cells in juvenile Atlantic salmon (Salmo salar) |
title_sort |
effects of growth hormone on gill chloride cells in juvenile atlantic salmon (salmo salar) |
publishDate |
1994 |
url |
http://prodinra.inra.fr/ft/8BA171A1-0A9A-41B9-957F-608E35C6A9B2 http://prodinra.inra.fr/record/110809 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
American Journal of Physiology (266), R850-R857. (1994) |
op_rights |
http://creativecommons.org/licenses/by-nd-nc/1.0/ |
op_rightsnorm |
CC-BY-ND-NC |
_version_ |
1766361059865657344 |