Differential expression of gill Na+,K+-ATPase alpha- and beta-subunits, Na+,K+,2Cl- cotransporter and CFTR anion channel in juvenile anadromous and landlocked Atlantic salmon Salmo salar.

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Fältnamn	Indikatorer	Metadata
000		04923naa a2200697 4500
001		oai:gup.ub.gu.se/77366
003		SwePub
008		240528s2007 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://gup.ub.gu.se/publication/773662 URI
024	7	a https://doi.org/10.1242/jeb.0028732 DOI
040		a (SwePub)gu
041		a eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Nilsen, Tom O4 aut
245	1 0	a Differential expression of gill Na+,K+-ATPase alpha- and beta-subunits, Na+,K+,2Cl- cotransporter and CFTR anion channel in juvenile anadromous and landlocked Atlantic salmon Salmo salar.
264	1	b The Company of Biologists,c 2007
520		a This study examines changes in gill Na(+),K(+)-ATPase (NKA) alpha- and beta-subunit isoforms, Na(+),K(+),2Cl(-) cotransporter (NKCC) and cystic fibrosis transmembrane conductance regulator (CFTR I and II) in anadromous and landlocked strains of Atlantic salmon during parr-smolt transformation, and after seawater (SW) transfer in May/June. Gill NKA activity increased from February through April, May and June among both strains in freshwater (FW), with peak enzyme activity in the landlocked salmon being 50% below that of the anadromous fish in May and June. Gill NKA-alpha1b, -alpha3, -beta(1) and NKCC mRNA levels in anadromous salmon increased transiently, reaching peak levels in smolts in April/May, whereas no similar smolt-related upregulation of these transcripts occurred in juvenile landlocked salmon. Gill NKA-alpha1a mRNA decreased significantly in anadromous salmon from February through June, whereas alpha1a levels in landlocked salmon, after an initial decrease in April, remained significantly higher than those of the anadromous smolts in May and June. Following SW transfer, gill NKA-alpha1b and NKCC mRNA increased in both strains, whereas NKA-alpha1a decreased. Both strains exhibited a transient increase in gill NKA alpha-protein abundance, with peak levels in May. Gill alpha-protein abundance was lower in SW than corresponding FW values in June. Gill NKCC protein abundance increased transiently in anadromous fish, with peak levels in May, whereas a slight increase was observed in landlocked salmon in May, increasing to peak levels in June. Gill CFTR I mRNA levels increased significantly from February to April in both strains, followed by a slight, though not significant increase in May and June. CFTR I mRNA levels were significantly lower in landlocked than anadromous salmon in April/June. Gill CFTR II mRNA levels did not change significantly in either strain. Our findings demonstrates that differential expression of gill NKA-alpha1a, -alpha1b and -alpha3 isoforms may be important for potential functional differences in NKA, both during preparatory development and during salinity adjustments in salmon. Furthermore, landlocked salmon have lost some of the unique preparatory upregulation of gill NKA, NKCC and, to some extent, CFTR anion channel associated with the development of hypo-osmoregulatory ability in anadromous salmon.
650	7	a NATURVETENSKAPx Biologix Zoologi0 (SwePub)106082 hsv//swe
650	7	a NATURAL SCIENCESx Biological Sciencesx Zoology0 (SwePub)106082 hsv//eng
653		a Animal Migration
653		a Animals
653		a Cystic Fibrosis Transmembrane Conductance Regulator
653		a genetics
653		a metabolism
653		a Ecosystem
653		a Gene Expression Regulation
653		a Gills
653		a metabolism
653		a Protein Isoforms
653		a Protein Subunits
653		a RNA
653		a Messenger
653		a genetics
653		a metabolism
653		a Salmo salar
653		a genetics
653		a growth & development
653		a metabolism
653		a Sodium-Potassium-Chloride Symporters
653		a genetics
653		a metabolism
653		a Sodium-Potassium-Exchanging ATPase
653		a genetics
653		a metabolism
653		a Time Factors
653		a Water-Electrolyte Balance
653		a physiology
700	1	a Ebbesson, Lars O E4 aut
700	1	a Madsen, Steffen S4 aut
700	1	a McCormick, Stephen D4 aut
700	1	a Andersson, Eva4 aut
700	1	a Björnsson, Björn Thrandur,d 1952u Gothenburg University,Göteborgs universitet,Zoologiska institutionen,Department of Zoology4 aut0 (Swepub:gu)xbjorb
700	1	a Prunet, Patrick4 aut
700	1	a Stefansson, Sigurd O4 aut
710	2	a Göteborgs universitetb Zoologiska institutionen4 org
773	0	t The Journal of experimental biologyd : The Company of Biologistsg 210:Pt 16, s. 2885-96q 210:Pt 16<2885-96x 0022-0949x 1477-9145
856	4	u http://jeb.biologists.org/content/210/16/2885.full.pdf
856	4 8	u https://gup.ub.gu.se/publication/77366
856	4 8	u https://doi.org/10.1242/jeb.002873

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By the author/editor: Nilsen, Tom O; Ebbesson, Lars O ...; Madsen, Steffen ...; McCormick, Steph ...; Andersson, Eva; Björnsson, Björn ...; show more...; Prunet, Patrick; Stefansson, Sigu ...; show less...

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NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...; and Zoology

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By the university: University of Gothenburg

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