Choline supplementation prevents diet induced gut mucosa lipid accumulation in post-smolt Atlantic salmon (Salmo salar L.)
Background Various intestinal morphological alterations have been reported in cultured fish fed diets with high contents of plant ingredients. Since 2000, salmon farmers have reported symptoms indicating an intestinal problem, which we suggest calling lipid malabsorption syndrome (LMS), characterize...
Published in: | BMC Veterinary Research |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2020
|
Subjects: | |
Online Access: | https://hdl.handle.net/11250/2687349 https://doi.org/10.1186/s12917-020-2252-7 |
id |
ftunivmob:oai:nmbu.brage.unit.no:11250/2687349 |
---|---|
record_format |
openpolar |
spelling |
ftunivmob:oai:nmbu.brage.unit.no:11250/2687349 2023-05-15T15:31:06+02:00 Choline supplementation prevents diet induced gut mucosa lipid accumulation in post-smolt Atlantic salmon (Salmo salar L.) Hansen, Anne Kristine Kortner, Trond M. Krasnov, Aleksei Björkhem, Ingemar Penn, Michael Krogdahl, Åshild 2020-08-19T11:51:43Z application/pdf https://hdl.handle.net/11250/2687349 https://doi.org/10.1186/s12917-020-2252-7 eng eng BMC Veterinary Research. 2020,16,32. urn:issn:1746-6148 https://hdl.handle.net/11250/2687349 https://doi.org/10.1186/s12917-020-2252-7 cristin:1824009 Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no CC-BY-NC-ND 16 BMC Veterinary Research 32 Peer reviewed Journal article 2020 ftunivmob https://doi.org/10.1186/s12917-020-2252-7 2021-09-23T20:16:06Z Background Various intestinal morphological alterations have been reported in cultured fish fed diets with high contents of plant ingredients. Since 2000, salmon farmers have reported symptoms indicating an intestinal problem, which we suggest calling lipid malabsorption syndrome (LMS), characterized by pale and foamy appearance of the enterocytes of the pyloric caeca, the result of lipid accumulation. The objective of the present study was to investigate if insufficient dietary choline may be a key component in development of the LMS. Results The results showed that Atlantic salmon (Salmo salar), average weight 362 g, fed a plant based diet for 79 days developed signs of LMS. In fish fed a similar diet supplemented with 0.4% choline chloride no signs of LMS were seen. The relative weight of the pyloric caeca was 40% lower, reflecting 65% less triacylglycerol content and histologically normal gut mucosa. Choline supplementation further increased specific fish growth by 18%. The concomitant alterations in intestinal gene expression related to phosphatidylcholine synthesis (chk and pcyt1a), cholesterol transport (abcg5 and npc1l1), lipid metabolism and transport (mgat2a and fabp2) and lipoprotein formation (apoA1 and apoAIV) confirmed the importance of choline in lipid turnover in the intestine and its ability to prevent LMS. Another important observation was the apparent correlation between plin2 expression and degree of enterocyte hyper-vacuolation observed in the current study, which suggests that plin2 may serve as a marker for intestinal lipid accumulation and steatosis in fish. Future research should be conducted to strengthen the knowledge of choline’s critical role in lipid transport, phospholipid synthesis and lipoprotein secretion to improve formulations of plant based diets for larger fish and to prevent LMS. Conclusions Choline prevents excessive lipid accumulation in the proximal intestine and is essential for Atlantic salmon in seawater. publishedVersion Article in Journal/Newspaper Atlantic salmon Salmo salar Open archive Norwegian University of Life Sciences: Brage NMBU BMC Veterinary Research 16 1 |
institution |
Open Polar |
collection |
Open archive Norwegian University of Life Sciences: Brage NMBU |
op_collection_id |
ftunivmob |
language |
English |
description |
Background Various intestinal morphological alterations have been reported in cultured fish fed diets with high contents of plant ingredients. Since 2000, salmon farmers have reported symptoms indicating an intestinal problem, which we suggest calling lipid malabsorption syndrome (LMS), characterized by pale and foamy appearance of the enterocytes of the pyloric caeca, the result of lipid accumulation. The objective of the present study was to investigate if insufficient dietary choline may be a key component in development of the LMS. Results The results showed that Atlantic salmon (Salmo salar), average weight 362 g, fed a plant based diet for 79 days developed signs of LMS. In fish fed a similar diet supplemented with 0.4% choline chloride no signs of LMS were seen. The relative weight of the pyloric caeca was 40% lower, reflecting 65% less triacylglycerol content and histologically normal gut mucosa. Choline supplementation further increased specific fish growth by 18%. The concomitant alterations in intestinal gene expression related to phosphatidylcholine synthesis (chk and pcyt1a), cholesterol transport (abcg5 and npc1l1), lipid metabolism and transport (mgat2a and fabp2) and lipoprotein formation (apoA1 and apoAIV) confirmed the importance of choline in lipid turnover in the intestine and its ability to prevent LMS. Another important observation was the apparent correlation between plin2 expression and degree of enterocyte hyper-vacuolation observed in the current study, which suggests that plin2 may serve as a marker for intestinal lipid accumulation and steatosis in fish. Future research should be conducted to strengthen the knowledge of choline’s critical role in lipid transport, phospholipid synthesis and lipoprotein secretion to improve formulations of plant based diets for larger fish and to prevent LMS. Conclusions Choline prevents excessive lipid accumulation in the proximal intestine and is essential for Atlantic salmon in seawater. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Hansen, Anne Kristine Kortner, Trond M. Krasnov, Aleksei Björkhem, Ingemar Penn, Michael Krogdahl, Åshild |
spellingShingle |
Hansen, Anne Kristine Kortner, Trond M. Krasnov, Aleksei Björkhem, Ingemar Penn, Michael Krogdahl, Åshild Choline supplementation prevents diet induced gut mucosa lipid accumulation in post-smolt Atlantic salmon (Salmo salar L.) |
author_facet |
Hansen, Anne Kristine Kortner, Trond M. Krasnov, Aleksei Björkhem, Ingemar Penn, Michael Krogdahl, Åshild |
author_sort |
Hansen, Anne Kristine |
title |
Choline supplementation prevents diet induced gut mucosa lipid accumulation in post-smolt Atlantic salmon (Salmo salar L.) |
title_short |
Choline supplementation prevents diet induced gut mucosa lipid accumulation in post-smolt Atlantic salmon (Salmo salar L.) |
title_full |
Choline supplementation prevents diet induced gut mucosa lipid accumulation in post-smolt Atlantic salmon (Salmo salar L.) |
title_fullStr |
Choline supplementation prevents diet induced gut mucosa lipid accumulation in post-smolt Atlantic salmon (Salmo salar L.) |
title_full_unstemmed |
Choline supplementation prevents diet induced gut mucosa lipid accumulation in post-smolt Atlantic salmon (Salmo salar L.) |
title_sort |
choline supplementation prevents diet induced gut mucosa lipid accumulation in post-smolt atlantic salmon (salmo salar l.) |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2687349 https://doi.org/10.1186/s12917-020-2252-7 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
16 BMC Veterinary Research 32 |
op_relation |
BMC Veterinary Research. 2020,16,32. urn:issn:1746-6148 https://hdl.handle.net/11250/2687349 https://doi.org/10.1186/s12917-020-2252-7 cristin:1824009 |
op_rights |
Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1186/s12917-020-2252-7 |
container_title |
BMC Veterinary Research |
container_volume |
16 |
container_issue |
1 |
_version_ |
1766361595414315008 |