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Sökning: WFRF:(Einarsdóttir K) > Hepatic insulin-lik...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003870naa a2200601 4500
001oai:gup.ub.gu.se/239508
003SwePub
008240528s2016 | |||||||||||000 ||eng|
0247 a https://gup.ub.gu.se/publication/2395082 URI
0247 a https://doi.org/10.1016/j.ygcen.2016.05.0152 DOI
040 a (SwePub)gu
041 a eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Breves, J. P.4 aut
2451 0a Hepatic insulin-like growth factor binding protein (igfbp) responses to food restriction in Atlantic salmon smolts
264 1b Elsevier BV,c 2016
520 a The growth hormone (Gh)/insulin-like growth-factor (Igf) system plays a central role in the regulation of growth in fishes. However, the roles of Igf binding proteins (Igfbps) in coordinating responses to food availability are unresolved, especially in anadromous fishes preparing for seaward migration. We assayed plasma Gh, Igf1, thyroid hormones and cortisol along with igfbp mRNA levels in fasted and fed Atlantic salmon (Salmo solar). Fish were fasted for 3 or 10 days near the peak of smoltification (late April to early May). Fasting reduced plasma glucose by 3 days and condition factor by 10 days. Plasma Gh, cortisol, and thyroxine (T-4) were not altered in response to fasting, whereas Igf1 and 3,5,3'-triiodo-L-thyronine (T-3) were slightly higher and lower than controls, respectively. Hepatic igfbp1b1, -1b2, -2a,-2b1 and -2b2 mRNA levels were not responsive to fasting, but there were marked increases in igfbp1a1 following 3 and 10 days of fasting. Fasting did not alter hepatic igf1 or igf2; however, muscle igf1 was diminished by 10 days of fasting. There were no signs that fasting compromised branchial ionoregulatory functions, as indicated by unchanged Na+/K+-ATPase activity and ion pump/transporter mRNA levels. We conclude that dynamic hepatic igfbp1a1 and muscle igf1 expression participate in the modulation of Gh/Igf signaling in smolts undergoing catabolism.
650 7a NATURVETENSKAPx Biologi0 (SwePub)1062 hsv//swe
650 7a NATURAL SCIENCESx Biological Sciences0 (SwePub)1062 hsv//eng
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskap0 (SwePub)1052 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciences0 (SwePub)1052 hsv//eng
653 a Insulin-like growth-factor
653 a Binding proteins
653 a Growth hormone
653 a Atlantic salmon
653 a Liver
653 a Fasting
653 a trout oncorhynchus-mykiss
653 a messenger-rna expression
653 a rainbow-trout
653 a coho
653 a salmon
653 a factor-i
653 a skeletal-muscle
653 a gene-expression
653 a post-smolts
653 a na+
653 a k+
653 a 2cl(-) cotransporter
653 a transcriptional regulation
653 a Endocrinology & Metabolism
7001 a Phipps-Costin, S. K.4 aut
7001 a Fujimoto, C. K.4 aut
7001 a Einarsdottir, Ingibjörg,d 1951u Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences4 aut0 (Swepub:gu)xeinin
7001 a Regish, A. M.4 aut
7001 a Björnsson, Björn Thrandur,d 1952u Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences4 aut0 (Swepub:gu)xbjorb
7001 a McCormick, S. D.4 aut
7102 a Göteborgs universitetb Institutionen för biologi och miljövetenskap4 org
7730 t General and Comparative Endocrinologyd : Elsevier BVg 233, s. 79-87q 233<79-87x 0016-6480
8564 8u https://gup.ub.gu.se/publication/239508
8564 8u https://doi.org/10.1016/j.ygcen.2016.05.015

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