Ivar Rønnestad

Summary

Affiliation: University of Bergen
Country: Norway

Publications

  1. ncbi request reprint Oligopeptide transporter PepT1 in Atlantic cod (Gadus morhua L.): cloning, tissue expression and comparative aspects
    Ivar Rønnestad
    University of Bergen, Department of Biology, N 5020 Bergen, Norway
    J Exp Biol 210:3883-96. 2007
  2. doi request reprint Molecular cloning and functional expression of atlantic salmon peptide transporter 1 in Xenopus oocytes reveals efficient intestinal uptake of lysine-containing and other bioactive di- and tripeptides in teleost fish
    Ivar Rønnestad
    Department of Biology, University of Bergen, O 5020 Bergen, Norway
    J Nutr 140:893-900. 2010
  3. doi request reprint Leptin and leptin receptor genes in Atlantic salmon: Cloning, phylogeny, tissue distribution and expression correlated to long-term feeding status
    Ivar Rønnestad
    Department of Biology, University of Bergen, N 5020 Bergen, Norway
    Gen Comp Endocrinol 168:55-70. 2010
  4. doi request reprint Evidence for an ontogenetic change from pre-programmed to meal-responsive cck production in Atlantic herring, Clupea harengus L
    Yuko Kamisaka
    Department of Biology, University of Bergen, PB 7800, 5020 Bergen, Norway
    Comp Biochem Physiol A Mol Integr Physiol 164:17-20. 2013
  5. doi request reprint Feed intake and brain neuropeptide Y (NPY) and cholecystokinin (CCK) gene expression in juvenile cobia fed plant-based protein diets with different lysine to arginine ratios
    Minh Van Nguyen
    Department of Biology, University of Bergen, Bergen, Norway
    Comp Biochem Physiol A Mol Integr Physiol 165:328-37. 2013
  6. doi request reprint Dietary protein hydrolysates and free amino acids affect the spatial expression of peptide transporter PepT1 in the digestive tract of Atlantic cod (Gadus morhua)
    Snorre Bakke
    Department of Biology, University of Bergen, Norway
    Comp Biochem Physiol B Biochem Mol Biol 156:48-55. 2010
  7. doi request reprint Leptin reduces Atlantic salmon growth through the central pro-opiomelanocortin pathway
    Koji Murashita
    Department of Biology, University of Bergen, Box 7803, NO 5020 Bergen, Norway
    Comp Biochem Physiol A Mol Integr Physiol 158:79-86. 2011
  8. doi request reprint Neuroendocrine control of appetite in Atlantic halibut (Hippoglossus hippoglossus): changes during metamorphosis and effects of feeding
    Ana S Gomes
    Department of Biology, University of Bergen, PO Box 7803, Bergen NO 5020, Norway Electronic address
    Comp Biochem Physiol A Mol Integr Physiol 183:116-25. 2015
  9. ncbi request reprint Cholecystokinin mRNA in Atlantic herring, Clupea harengus--molecular cloning, characterization, and distribution in the digestive tract during the early life stages
    Yuko Kamisaka
    Department of Biology, University of Bergen, Allegt 41, N 5007 Bergen, Norway
    Peptides 26:385-93. 2005
  10. doi request reprint Whole body proteome response to a dietary lysine imbalance in zebrafish Danio rerio
    Pedro Gómez-Requeni
    Department of Biology, University of Bergen, High Technology Center, Norway
    Comp Biochem Physiol Part D Genomics Proteomics 6:178-86. 2011

Collaborators

Detail Information

Publications16

  1. ncbi request reprint Oligopeptide transporter PepT1 in Atlantic cod (Gadus morhua L.): cloning, tissue expression and comparative aspects
    Ivar Rønnestad
    University of Bergen, Department of Biology, N 5020 Bergen, Norway
    J Exp Biol 210:3883-96. 2007
    ..Moreover, it can represent a useful tool for the study of gut functional regionalization, as well as a marker for the analysis of temporal and spatial expression during ontogeny...
  2. doi request reprint Molecular cloning and functional expression of atlantic salmon peptide transporter 1 in Xenopus oocytes reveals efficient intestinal uptake of lysine-containing and other bioactive di- and tripeptides in teleost fish
    Ivar Rønnestad
    Department of Biology, University of Bergen, O 5020 Bergen, Norway
    J Nutr 140:893-900. 2010
    ..Also, asPepT1 will be useful as a marker to estimate protein absorption function along the intestine under various physiological and pathological conditions...
  3. doi request reprint Leptin and leptin receptor genes in Atlantic salmon: Cloning, phylogeny, tissue distribution and expression correlated to long-term feeding status
    Ivar Rønnestad
    Department of Biology, University of Bergen, N 5020 Bergen, Norway
    Gen Comp Endocrinol 168:55-70. 2010
    ..In tetraploid species like Atlantic salmon, different Lep paralogues seems to serve different physiological roles...
  4. doi request reprint Evidence for an ontogenetic change from pre-programmed to meal-responsive cck production in Atlantic herring, Clupea harengus L
    Yuko Kamisaka
    Department of Biology, University of Bergen, PB 7800, 5020 Bergen, Norway
    Comp Biochem Physiol A Mol Integr Physiol 164:17-20. 2013
    ..Our results suggest that CCK-producing cells in the gut develop "meal-responsiveness" later in post-hatch development...
  5. doi request reprint Feed intake and brain neuropeptide Y (NPY) and cholecystokinin (CCK) gene expression in juvenile cobia fed plant-based protein diets with different lysine to arginine ratios
    Minh Van Nguyen
    Department of Biology, University of Bergen, Bergen, Norway
    Comp Biochem Physiol A Mol Integr Physiol 165:328-37. 2013
    ..The data suggest that NPY serves as an orexigenic factor, but further studies are necessary to describe links between dietary L/A and regulation of appetite and FI in cobia...
  6. doi request reprint Dietary protein hydrolysates and free amino acids affect the spatial expression of peptide transporter PepT1 in the digestive tract of Atlantic cod (Gadus morhua)
    Snorre Bakke
    Department of Biology, University of Bergen, Norway
    Comp Biochem Physiol B Biochem Mol Biol 156:48-55. 2010
    ..This adaptive response might be functional to keep a maximal efficiency of protein absorption at the intestinal level...
  7. doi request reprint Leptin reduces Atlantic salmon growth through the central pro-opiomelanocortin pathway
    Koji Murashita
    Department of Biology, University of Bergen, Box 7803, NO 5020 Bergen, Norway
    Comp Biochem Physiol A Mol Integr Physiol 158:79-86. 2011
    ..The results support the lipostatic hypothesis and suggest that sLepA1 reduces growth in Atlantic salmon by affecting food intake through the central pro-opiomelanocortin pathway...
  8. doi request reprint Neuroendocrine control of appetite in Atlantic halibut (Hippoglossus hippoglossus): changes during metamorphosis and effects of feeding
    Ana S Gomes
    Department of Biology, University of Bergen, PO Box 7803, Bergen NO 5020, Norway Electronic address
    Comp Biochem Physiol A Mol Integr Physiol 183:116-25. 2015
    ..The differing response times of POMC-C, ghrelin, PYY and NPY to a meal are intriguing and require further exploration to understand the role of each player in appetite control...
  9. ncbi request reprint Cholecystokinin mRNA in Atlantic herring, Clupea harengus--molecular cloning, characterization, and distribution in the digestive tract during the early life stages
    Yuko Kamisaka
    Department of Biology, University of Bergen, Allegt 41, N 5007 Bergen, Norway
    Peptides 26:385-93. 2005
    ..Since herring larvae have a straight gut, the distribution pattern of CCK cells seems to be reflected in the anatomy of the gut...
  10. doi request reprint Whole body proteome response to a dietary lysine imbalance in zebrafish Danio rerio
    Pedro Gómez-Requeni
    Department of Biology, University of Bergen, High Technology Center, Norway
    Comp Biochem Physiol Part D Genomics Proteomics 6:178-86. 2011
    ..Excess Lys was accompanied by an up-regulation of proteins related to glycolysis, steroidogenesis and sexual maturation...
  11. doi request reprint Identification of a novel leptin receptor duplicate in Atlantic salmon: Expression analyses in different life stages and in response to feeding status
    Anna R Angotzi
    Department of Biology, University of Bergen, Thormølensgate 55, Bergen 5020, Norway
    Gen Comp Endocrinol 235:108-19. 2016
    ....
  12. doi request reprint Molecular cloning and genomic characterization of novel leptin-like genes in salmonids provide new insight into the evolution of the Leptin gene family
    Anna R Angotzi
    Department of Biology, University of Bergen, Thormolensgate 55, Bergen 5020, Norway
    Gen Comp Endocrinol 187:48-59. 2013
    ..This study provides an essential groundwork to further elucidate structural and functional evolution of this important hormone in salmonids as well as in other teleosts...
  13. doi request reprint Cholecystokinin (CCK) in Atlantic herring (Clupea harengus L.) - ontogeny and effects of feeding and diurnal rhythms
    Carlos R Rojas-García
    Department of Biology, University of Bergen, PO Box 7800, NO 5020 Bergen, Norway
    Comp Biochem Physiol A Mol Integr Physiol 158:455-60. 2011
    ..Taken together, these results support earlier reports that CCK participates in the regulation of digestive processes in herring larvae, but CCK does not seem to have a circadian rhythm independent of feeding...
  14. pmc The Ontogeny and Brain Distribution Dynamics of the Appetite Regulators NPY, CART and pOX in Larval Atlantic Cod (Gadus morhua L.)
    Hoang T M D Le
    Department of Biology, University of Bergen, Bergen, Norway
    PLoS ONE 11:e0153743. 2016
    ..These observations suggest that teleost larvae continue to develop the regulatory networks underlying appetite control after onset of exogenous feeding. ..
  15. doi request reprint The two-step development of a duplex retina involves distinct events of cone and rod neurogenesis and differentiation
    Ragnhild Valen
    Department of Biology, University of Bergen, NO 5020 Bergen, Norway
    Dev Biol 416:389-401. 2016
    ....
  16. pmc Functional modifications associated with gastrointestinal tract organogenesis during metamorphosis in Atlantic halibut (Hippoglossus hippoglossus)
    Ana S Gomes
    Department of Biology, University of Bergen, PO, Box 7803, NO 5020 Bergen, Norway
    BMC Dev Biol 14:11. 2014
    ....