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Kaja Skjærven

Skj%20rven Kaja%20Helvik
Forsker
Telephone: 97142241
Department: Feed and nutrition

Kaja Helvik Skjærven has a special interest area related to early embryonic development in fish and how development is affected by environmental conditions such as nutrition, temperature, or toxicants. The core focus is how the different environmental conditions change the potential for gene expression through nutritional based epigenetic changes. The main theme of the work is how nutrients, temperature, or toxicants regulate specifically DNA methylation (epigenetics) intergenerationally (from parents to offspring) and associates the changes in gene expression potential (epigenetics) with more traditional biological procedures like nutrition, physiology and histological analyses.

 

A few years ago, we wanted to test whether parental vitamin status could affect the next generation. We made a feed with lower vitaminlevel and gave it to the parents. It lowered the fecundity, but the eggs that were spawned were without deformities. However, RNA sequencing revealed that the embryo stage was affected by parental vitamin status (Skjærven et al., 2016). In the next generation, both groups were fed the control feed with sufficient B-vitamin level which resulted in equal growth of the F1 generation. We were quite surprised when we open to dissect the liver of the children, they had pale pink liver color, and the histology showed significantly more fat in the liver, down-regulated genes in fat metabolism and changed over 2800 differentially methylated sites. This is nutritional programming and DNA methylation was one of the mechanisms that controlled the development of the phenotype (Skjærven et al., 2018). Recently, we have also shown that changing only one nutrient in the parental feed influenced the which genes where expressed and DNA methylation in the offspring livers (Adam et al., 2019). Now we are doing DNA methylatoion profiles in salmon and trout. Check out our last publications, especially the one in Epigenetics!!

Subjectarea

Field of work: fish nutrition, nutrition, embryo development, broodstock, epigenetics, DNA methylation, gene expression, B vitamins, methionine, free amino acids, nutritional programming, 1C nutrient. Species: salmon, zebrafish, cod, plaice, halibut

08.04. 2020, Forkning.no, Chronicle: Drop the calorie count this Easter – rather focus on getting plenty of micronutrients: https://forskersonen.no/kronikk-mat-mat-og-helse/dropp-kaloritellingen-denne-pasken--sats-heller-pa-a-fa-i-deg-mange-mikronaeringsstoff/1667692

 

08.04. 2020, HI.no,                            

Enjoy cooking good food at Easter. Fresh ingredients and homemade dinner can strengthen your immune system.https://www.hi.no/hi/nyheter/2020/april/dropp-kaloritellingen-denne-pasken-sats-heller-pa-a-fa-i-deg-mange-mikroneringsstoff

 

05.05. 2020, Forskning.no, Extra doses of vitamins make salmon fry grow better https://forskning.no/fisk-fiskehelse-havforskningsinstituttet/ekstra-doser-vitaminer-gjor-at-lakseyngel-vokser-bedre/1680295

 

05.05. 2020, HI.no, Feeds that have more B vitamins and the amino acid methionine ensure growth and reduce fat storage in the liver of salmon in the transition from freshwater to seawater. It can contribute to less mortality in salmon smolt.

https://www.hi.no/hi/nyheter/2020/mai/mer-mikroneringsstoffer-gir-friskere-laks

25.06. 2020           HI.no

When farmed salmon spawn in the summer instead of in the autumn, then the salmon eggs get a lower level of several important nutrients.https://www.hi.no/hi/nyheter/2020/juni/darligere-egg-nar-laksen-gyter-om-sommeren

23.07. 2020           Hatcheryfm.com

Off-season spawning of salmon in RAS facilities affects eggs nutritional status

http://www.hatcheryfm.com/hfm-article/948/Outofseason-spawning-of-salmon-in-RAS-systems-affects-eggs-nutritional-status/

Low folate in feed leads to fewer and weaker fish embryos:

https://www.hi.no/en/hi/news/2017/mars/low-folate-in-feed-leads-to-fewer-and-weaker-fish-embryos

Enough vitamin B in feed can improve fish health:

https://www.hi.no/hi/nyheter/2017/03/folatmangel-i-for-gir-ferre-og-svakare-fiskeembryo

Should consider increasing the amount of vitamin B in salmon feed:

http://www.intrafish.no/fou/1234679/bor-vurdere-aa-oke-mengden-b-vitamin-i-lakseforet

Vitamin B deficiency in fish parents affects offspring:

https://www.hi.no/hi/nyheter/2018/mars/bvitaminmangel

Parental Vitamin B deficiency may affect fish children: 

https://forskning.no/2018/03/b-vitaminmangel-hos-foreldre-pavirker-barna/produsert-og-finansiert-av/havforskningsinstituttet

Vitamin B deficiency in fish affects the next generation: 

http://www.intrafish.no/nyheter/1450073/b-vitaminmangel-hos-fisk-paavirker-neste-generasjon 

Curriculum Vitae

  1. T. Saito, P. Whatmore, J.F. Taylor, J.M.O. Fernandes, A-C. Adam, D. R. Tocher, M. Espe, and K.H. Skjærven. 2020. Micronutrient supplementation affects transcriptional and epigenetic regulation of lipid metabolism in a dose-dependent manner. Epigenetics, doi: 10.1080/15592294.2020.1859867
  2. K. H. Skjærven, E.Oveland, M.Mommens, E. Samori, T. Saito, A-C. Adam, M. Espe 2020. Out-of-season spawning affects the nutritional status and gene expression in both Atlantic salmon female broodstock and their offspring. Comp Biochem Physiol A Mol Integr Physiol. 247:110717. doi: 10.1016/j.cbpa.2020.110717.
  3. L. M. Vera, K. Hamre, M, Espe, G-I. Hemre, K. Skjærven, E-J. Lock, A. J. Prabhu, D. Leeming, H. Migaud, D. R. Tocher, J. F. Taylor 2020 Higher dietary micronutrients are required to maintain optimal performance of Atlantic salmon (Salmo salar) fed a high plant material diet during the full production cycle. Aquaculture. Vol: 528,doi: 10.1016/j.aquaculture.2020.735551
  4. P. Wischhusen, T. Saito, Heraud C, Kaushik SJ, Fauconneau B, Antony Jesu Prabhu P, Fontagné-Dicharry S, Skjærven KH. 2020. Parental selenium nutrition affects the one-carbon metabolism and the hepatic DNA methylation pattern of rainbow trout (Oncorhynchus mykiss) in the progeny. Life (Basel). 25;10(8):121. doi: 10.3390/life10080121.
  5. M. Espe, K.H. Skjærven, M. Chen, V. Vikeså, A-C. Adam, T. Saito, E. Holen. 2020. The level of 1C diets fed prior to cell isolation affect lipid metabolism in primary liver cells isolated from Atlantic salmon. Aquaculture Nutrition. doi:10.1111/anu.13058
  6. M. Espe, V. Vikeså, T. H. Thomsen, A-C. Adam, T. Saito and K. H. Skjærven.  Atlantic salmon fed a nutrient package of surplus methionine, vitamin B12, folic acid and vitamin B6 improved growth and reduced the relative liver size, but when in excess growth reduced. Aquaculture Nutrition. 1-13, doi:10.1111/anu.13010 (2019)
  7. Taylor JF, Vera LM, De Santis C, Lock EJ, Espe M, Skjærven KH, Leeming D, Del Pozo J, Mota-Velasco J, Migaud H, Hamre K, Tocher DR. 2019. The effect of micronutrient supplementation on growth and hepatic metabolism in diploid and triploid Atlantic salmon (Salmo salar) parr fed a low marine ingredient diet. Comparative Biochemistry and Physiology, Part B 227: 106-121 doi: 10.1016/j.cbpb.2018.10.004.
  8. P. A. Olsvik, P. Whatmore, S. J. Penglase, K. H. Skjaerven, M. Anglès d'Auriac, S. Ellingsen. Associations between behavioral effects, of bisphenol A and DNA methylation in zebrafish embryos.  Front Genet. 8;10:184. doi: 10.3389/fgene.2019.00184 (2019)
  9. Adam, A.C., Lie, K.K., Whatmore, P., Jakt, L.M., Moren, M., Skjaerven, K.H. 2019. Profiling DNA methylation patterns of zebrafish liver associated with parental high dietary arachidonic acid. PLoS One 14, doi: 10.1371/journal.pone.0220934 (2019)
  10. K.H. Skjaerven, L.M. Jakt, J.M.O. Fernandes, J.A. Dahl, A-C. Adam, J. Klughammer, C. Bock, M. Espe. Parental micronutrient deficiency distorts liver DNA methylation and expression of lipid genes associated with a fatty-liver-like phenotype in offspring. Scientific Reports 8, 3055, doi:10.1038/s41598-018-21211-5 (2018)
  11. I.G. Guimaraes, K.H. Skjærven, M. Moren, M. Espe, K. Hamre. Dietary taurine supplementation in plant protein based diets do not affect growth and reproductive performance of zebrafish, Aquaculture Research doi: 10.1111/are.13658 (2018)
  12. A-C. Adam, K.H. Skjaerven, P. Whatmore, M. Moren, K. K. Lie. Parental high dietary arachidonic acid levels modulated the hepatic transcriptome of adult zebrafish (Danio rerio) progeny. PlosOne: doi: 10.1371/journal.pone.0201278PONE-D-17-35539R1 (2018)
  13. A.C. Adam, K.K. Lie, M. Moren, K.H. Skjærven. High dietary arachidonic acid levels induce changes in complex lipids, immune-related eicosanoids and increase levels of oxidized metabolites in zebrafish (Danio rerio) Br J Nutr  117, 1075, doi: 10.1017/S0007114517000903 (2017)
  14. L.M. Vera, C. Metochis, J.F. Taylor, M. Clarkson, K.H. Skjærven, H. Migaud, D.R.L. Tocher. Early nutritional programming affects liver transcriptome in diploid and triploid Atlantic salmon, Salmo salar. BMC Genomics 18, 886, doi: 10.1186/s12864-017-4264-7 (2017)
  15. P.A. Olsvik, K.H. Skjærven, L. Søfteland. Metabolic signatures of bisphenol A and genistein in Atlantic salmon liver cells. Chemosphere 189, 730 doi: 10.1016/ S0045-6535(17)31489-3 (2017)
  16. K.H. Skjærven, L.M. Jakt, J.A. Dahl, M. Espe, H. Aanes, K. Hamre, K., J.M.O. Fernandes. Parental vitamin deficiency affects the embryonic gene expression of immune-, lipid transport- and apolipoprotein genes. Scientific Reports 6, 34535, doi: 10.1038/srep34535 (2016)
  17. K. Hamre, S.J. Penglase, J.D. Rasinger, K.H. Skjærven, P.A. Olsvik. Ontogeny of redox regulation in Atlantic cod (Gadus morhua) larvae. Free Radic Biol Med 73, 337 doi:  10.1016/S0891-5849(14) 00233-0 (2014)
  18. P.A. Olsvik, H. Amlund, O. Saele, S. Ellingsen, K.H. Skjaerven. Impact of dietary selenium on methylmercury toxicity in juvenile Atlantic cod: A transcriptional survey. Chemosphere 120, 199 doi: 10.1016/S0045-6535(14)00772-3 (2015)
  19. P.A. Olsvik, T.D. Williams, H.S. Tung, L. Mirbahai, M. Sanden, K.H. Skjaerven, S. Ellingsen. Impacts of TCDD and MeHg on DNA methylation in zebrafish (Danio rerio) across two generations. Comp Biochem Phys C 165, 17, doi: 10.1016/S1532-0456(14)00077-5 (2014)
  20. K.H. Skjærven, K. Hamre, R.N. Finn and P.A. Olsvik. Thermal stress alters expression of genes involved in one carbon and DNA methylation pathways in Atlantic cod embryos. Comp Biochem Physiol A 173C, 17-27, doi: 10.1016/S1095-6433(14)00053-1 (2014)
  21. K.H. Skjærven, S. Penglase, P.A. Olsvik, K. Hamre. Redox regulation in Atlantic cod (Gadus morhua) embryos developing under normal and heat stressed conditions. Free Radic Biol Med. 57, 29-38, doi: 10.1016/S0891-5849(12)01840-0 (2013)
  22. K.H. Skjærven, P.A. Olsvik, R.N. Finn, E. Holen, K. Hamre. Ontogenetic expression of maternal and zygotic genes in Atlantic cod embryos under ambient and thermally stressed conditions. Comp Biochem Physiol A 159, 196-205, doi: 10.1016/ S1095-6433(11)00059-6 (2011)
  23. L. Oftedal, K.H. Skjærven, R.T. Coyne, B. Edvardsen, T. Rohrlack, O.M. Skulberg, S.O. Døskeland, L. Herfindal. The apoptosis-inducing activity towards leukemia and lymphoma cells in a cyanobacterial culture collection is not associated with mouse bioassay toxicity. J Ind Microbiol Biotechnol. 38, 489-501, doi: 10.1007/s10295-010-0791-9 (2011)
  24. E. Holen, A. Kausland, K.H. Skjærven. Embryonic stem cells isolated from Atlantic cod (Gadus morhua) and the developmental expression of a stage-specific transcription factor ac-Pou2. Fish Physiol Biochem., 36, 1029-1039, doi: 10.1007/s10695-010-9381-z (2010)
  25. S.K. Prestegard, L. Oftedal, R.T. Coyne, G. Nygaard, K.H. Skjærven, G. Knutsen, S.O. Døskeland, L. Herfindal. Marine Benthic Diatoms Contain Compounds Able to Induce Leukemia Cell Death and Modulate Blood Platelet Activity. Mar. Drugs 7, 605-623, doi: 10.3390/md7040605 (2009)
  26. R.F. Martins, M.F. Ramos, L. Herfindal, J.A. Sousa, K.H. Skjærven, and V.M. Vasconcelos. Antimicrobial and Cytotoxic Assessment of Marine Cyanobacteria - Synechocystis and Synechococcus. Mar. Drugs 6, 1–11, PMCID: PMC2474953 (2008)
  27. H. Hagland, F. Selheim, T.J. Keen, K.H. Skjærven, C. Krakstad, A-E. Christensen, L. Herfindal, F. Schwede, H-G. Genieser and S.O. Døskeland. The cAMP Receptors Epac and PKA Synergize To Induce PC12 Cell Neuritogenesis and To Protect Against Apoptosis. Peer review. Proceeding of the 12th International Conference on Second Messengers and Phosphoproteins, 123-128 (2004)
  28. K.H. Skjærven, R.N. Finn, H. Kryvi and H.J. Fyhn Yolk resorption in developing plaice (Pleuronectes platessa). Peer review. In: The Big Fish Bang; Proceedings of the 26th Annual Larval Fish Conference, 193-210 (2003)

Publications

Academic articles

2020

Micronutrient supplementation affects transcriptional and epigenetic regulation of lipid metabolism in a dose-dependent manner

Takaya Saito, Paul Whatmore, John F. Taylor, Jorge Manuel de Oliveira Fernandes, Anne-Catrin Adam, Douglas R. Tocher, Marit Espe, Kaja Helvik Skjærven
Epigenetics
2020

Higher dietary micronutrients are required to maintain optimal performance of Atlantic salmon (Salmo salar) fed a high plant material diet during the full production cycle

Luisa M. Vera, Kristin Hamre, Marit Espe, Gro Ingunn Hemre, Kaja Helvik Skjærven, Erik-Jan Lock, P. Antony Jesu Prabhu, Daniel Leeming, Herve Migaud, Douglas R. Tocher, John F. Taylor
Aquaculture 528
2020

The level of 1C diets fed prior to cell isolation affect lipid metabolism in primary liver cells isolated from Atlantic salmon

Marit Espe, Kaja Helvik Skjærven, Ming Chen, Vibeke Vikeså, Anne-Catrin Adam, Takaya Saito, Elisabeth Holen
Aquaculture Nutrition 26 p. p. 1019-1025
2020

Higher dietary micronutrients are required to maintain optimal performance of Atlantic salmon (Salmo salar) fed a high plant material diet during the full production cycle.

Luisa M.Vera, Kristin Hamre, Marit Espe, Gro-Ingunn Hemre, Kaja Skjærven, Erik-Jan Lock, Antony J Prabhu, Daniel Leeming, Herve Migaud, Douglas R. Tocher, John F. Taylor
Aquaculture 528
2020

Out-of-season spawning affects the nutritional status and gene expression in both Atlantic salmon female broodstock and their offspring

Kaja H Skjærven, Eystein Oveland, Maren Mommens, Elisa Samori, Takaya Saito, Anne-Catrin Adam, Marit Espe
Comp Biochem Physiol A Mol Integr Physiol 247
2020

Micronutrient supplementation affects transcriptional and epigenetic regulation of lipid metabolism in a dose-dependent manner.

Takaya Saito, Paul Whatmore, John F. Taylor, Jorge M.O. Fernandes, Anne-Catrin Adam, Douglas R. Tocher, Marit Espe & Kaja H. Skjærven
Epigenetics (Ja)
2020

The level of 1C diets fed prior to cell isolation affects lipid metabolism in primary liver cells isolated from Atlantic salmon (Salmo salar)

Marit Espe, Kaja Helvik Skjærven, Ming Chen, Vibeke Vikeså, Anne-Catrin Adam, Takaya Saito, Elisabeth Holen
Aquaculture Nutrition 26 p. 1019-1025
2020

Parental selenium nutrition affects the one-carbon metabolism and the hepatic dna methylation pattern of rainbow trout (Oncorhynchus mykiss) in the progeny

Pauline Wischhusen, Takaya Saito, Cécile Heraud, Sadasivam J. Kaushik, Benoit Fauconneau, P. Antony Jesu Prabhu, Stéphanie Fontagné-Dicharry, Kaja Helvik Skjærven
Life 10 p. 1-25
2019

The effect of micronutrient supplementation on growth and hepatic metabolism in diploid and triploid Atlantic salmon (Salmo salar) parr fed a low marine ingredient diet.

John F. Taylor, L.M. Vera, Christian De Santis, Erik-Jan Lock, Marit Espe, Kaja Helvik Skjærven, DJ Leeming, J del Pozo, J Mota-Velasco, Hervé Migaud, Kristin Hamre, Douglas R. Tocher
Comparative Biochemistry and Physiology, Part B 227 p. 106-121
2019

Atlantic salmon fed a nutrient package of surplus methionine, vitamin B12, folic acid and vitamin B6 improved growth and reduced the relative liver size, but when in excess growth reduced

Marit Espe, Vibeke Vikeså, Tårn Helgøy Thomsen, Anne-Catrin Adam, Takaya Saito, Kaja Helvik Skjærven
Aquaculture Nutrition p. 1-13
2019

Profiling DNA methylation patterns of zebrafish liver associated with parental high dietary arachidonic acid.

Anne-Catrin Adam, Kai Kristoffer Lie, Paul Whatmore, Lars Martin Jakt, Mari Moren, Kaja Helvik Skjærven
PLOS ONE 14
2019

Associations Between Behavioral Effects of Bisphenol A and DNA Methylation in Zebrafish Embryos

Pål A Olsvik, Paul Whatmore, Sam J Penglase, Kaja H Skjærven, Marc Anglès d'Auriac, Ståle Ellingsen
Frontiers in Genetics 10
2019

The effect of micronutrient supplementation on growth and hepatic metabolism in diploid and triploid Atlantic salmon (Salmo salar) parr fed a low marine ingredient diet

John F. Taylor, L.M. Vera, Christian De Santis, Erik-Jan Lock, Marit Espe, Kaja Helvik Skjærven, DJ Leeming, J del Pozo, J Mota-Velasco, Hervé Migaud, Kristin Hamre, Douglas R. Tocher
227 p. 106-121
2018

Parental high dietary arachidonic acid levels modulated the hepatic transcriptome of adult zebrafish (Danio rerio) progeny

Anne-Catrin Adam, Kaja Helvik Skjærven, Paul Whatmore, Mari Moren, Kai Kristoffer Lie
PLOS ONE 13
2018

Parental micronutrient deficiency distorts liver DNA methylation and expression of lipid genes associated with a fatty-liver-like phenotype in offspring

Kaja Helvik Skjærven, Lars Martin Jakt, Jorge Manuel de Oliveira Fernandes, John Arne Dahl, Anne-Catrin Adam, Johanna Klughammer, Christoph Bock, Marit Espe
Scientific Reports 8
2018

Dietary taurine supplementation in plant protein based diets do not affect growth and reproductive performance of zebrafish

Igo Gomes Guimarães, Kaja Helvik Skjærven, Mari Moren, Marit Espe, Kristin Hamre
Aquaculture Research 49 p. 2013-2022
2017

High dietary arachidonic acid levels induce changes in complex lipids and immune-related eicosanoids and increase levels of oxidised metabolites in zebrafish (Danio rerio)

Anne-Catrin Adam, Kai Kristoffer Lie, Mari Moren, Kaja Helvik Skjærven
British Journal of Nutrition 117 p. 1075-1085
2017

Metabolic signatures of bisphenol A and genistein in Atlantic salmon liver cells

Pål Asgeir Olsvik, Kaja Helvik Skjærven, Liv Ingeborg Rosvoll Søfteland
Chemosphere 189 p. 730-743
2017

Early nutritional programming affects liver transcriptome in diploid and triploid Atlantic salmon, Salmo salar

LM Vera, C Metochis, John F. Taylor, Michael Clarkson, Kaja Helvik Skjærven, Hervé Migaud, Douglas R. Tocher
BMC Genomics 18 p. 1-15
2016

Parental vitamin deficiency affects the embryonic gene expression of immune-, lipid transport-and apolipoprotein genes

Kaja Helvik Skjærven, Lars Martin Jakt, John Arne Dahl, Marit Espe, Håvard Aanes, Kristin Hamre, Jorge Fernandes
Scientific Reports 6
2015

Impact of dietary selenium on methylmercury toxicity in juvenile Atlantic cod: A transcriptional survey

Pål Asgeir Olsvik, Heidi Amlund, Øystein Sæle, Ståle Ellingsen, Kaja Helvik Skjærven
Chemosphere 120 p. 199-205
2014

Thermal stress alters expression of genes involved in one carbon and DNA methylation pathways in Atlantic cod embryos

Kaja Helvik Skjærven, Kristin Hamre, Samuel Penglase, Roderick Nigel Finn, Pål Asgeir Olsvik
Comparative Biochemistry and Physiology A 173 p. 17-27
2014

Impacts of TCDD and MeHg on DNA methylation in zebrafish (Danio rerio) across two generations

Pål Asgeir Olsvik, Timothy Williams, Hai-Shan Tung, Leda Mirbahai, Monica Sanden, Kaja Helvik Skjærven, Ståle Ellingsen
165 p. 17-27
2014

Ontogeny of redox regulation in Atlantic cod (Gadus morhua) larvae

Kristin Hamre, Samuel Penglase, Josef Daniel Rasinger, Kaja Helvik Skjærven, Pål Asgeir Olsvik
73 p. 337-348
2013

Redox regulation in Atlantic cod (Gadus morhua) embryos developing under normal and heat-stressed conditions

Kaja Helvik Skjærven, Samuel Penglase, Pål Asgeir Olsvik, Kristin Hamre
57 p. 29-38
2011

The apoptosis-inducing activity towards leukemia and lymphoma cells in a cyanobacterial culture collection is not associated with mouse bioassay toxicity

Linn Silje Wathne Oftedal, Kaja Helvik Skjærven, Rosie Theresa Coyne, Bente Edvardsen, Thomas Rohrlack, Olav Skulberg, Stein Ove Doskeland, Lars Herfindal
38 p. 489-501
2011

Ontogenetic expression of maternal and zygotic genes in Atlantic cod embryos under ambient and thermally stressed conditions

Kaja Helvik Skjærven, Pål Asgeir Olsvik, Roderick Nigel Finn, Elisabeth Holen, Kristin Hamre
Comparative Biochemistry and Physiology A 159 p. 196-205
2010

Embryonic stem cells isolated from Atlantic cod (Gadus morhua) and the developmental expression of a stage-specific transcription factor ac-Pou2

Elisabeth Holen, Anette Kausland, Kaja Helvik Skjærven
36 p. 1029-1039
2009

Marine Benthic Diatoms Contain Compounds Able to Induce Leukemia Cell Death and Modulate Blood Platelet Activity

Siv Kristin Prestegard, Linn Silje Wathne Oftedal, Rosie Theresa Coyne, Gyrid Nygård, Kaja Helvik Skjærven, Gjert Knutsen, Stein Ove Doskeland, Lars Herfindal
Marine Drugs 7 p. 605-623
2008

Antimicrobial and cytotoxic assessment of marine cyanobacteria - Synechocystis and synechococcus

Rosário F. Martins, Miguel F. Ramos, Lars Herfindal, José A. Sousa, Kaja Helvik Skjærven, Vitor M. Vasconcelos
Marine Drugs 6 p. 1-11

Posters

2018

Salmon Production and Quantification of Folates using AOAC Trienzyme UHPLC-MS/MS Method

Eystein Overland, Rikard Hageskal, Elsa Samori, Nina Wollertsen, Maren Mommens, Rune Waagbø, Kaja Helvik Skjærven
2016

Behavioral and transcriptional effects of bisphenol A in zebrafish embryos

Pål Asgeir Olsvik, Paul Whatmore, Samuel Penglase, Kaja Helvik Skjærven, Marc Angles d'Auriac, Ståle Ellingsen
2015

Dietary high arachidonic acid level affects the DNA methylation pattern in zebrafish

Anne-Catrin Adam, Kai Kristoffer Lie, Lars Martin Jakt, Mari Moren, Kaja Helvik Skjærven
2015

Insufficient Methionine and B-vitamin Levels in Zebrafish Feed Increases the Liver Lipid Accumulation and Affects Redox Regulation and One Carbon Metabolism in the Next Generation.

Kaja Helvik Skjærven, Jorge Fernandes, Christoph Bock, Johanna Hadler, Håvard Aanes, Kai Kristoffer Lie, Kristin Hamre, John Arne Dahl
2014

Insufficient B-vitamin levels in the feed for zebrafish increases the lipid accumulation in the liver of the next generation.

Kaja Helvik Skjærven, Håvard Aanes, Kai Kristoffer Lie, Kristin Hamre, John Arne Dahl

Popular science articles

2018

Epigenetikk: B-vitamin nivå hos fisk påvirker avkommet

Skjærven, Kaja Helvik
Norsk Fiskeoppdrett 43 p. 28-29
2015

Langtidseffekter av ulike startfôr

Ørjan Karlsen, Kaja Helvik Skjærven, Jorge Fernandes, Terje van der Meeren, Ivar Rønnestad, Kristin Hamre
Norsk Fiskeoppdrett E1 p. 42-43

Academic lectures

2020

Moderat overskudd av mikronæringsstoff i laksefôr gir økt vekst og endrer ernæringssensitive epigenetiske reguleringsmekanismer i muskel til atlantisk laks

Anne-Catrin Adam, Marit Espe, Takaya Saito, Paul Whatmore, Jorge Manuel de Oliveira Fernandes, Kaja Helvik Skjærven
2019

The metabolic footprint of a surplus of dietary micronutrients on salmon muscle – stories from pre- and post-smolts

Anne-Catrin Adam, Marit Espe, Takaya Saito, Paul Whatmore, Kaja Helvik Skjærven
2019

Epigenetic effects of dietary micronutrients in Atlantic salmon (Salmo salar) muscle

Anne-Catrin Adam, Marit Espe, Takaya Saito, Paul Whatmore, Jorge Manuel de Oliveira Fernandes, Kaja Helvik Skjærven
2019

Nutrient-responsive epigenetic programming in Atlantic salmon and zebrafish

Anne-Catrin Adam, Paul Whatmore, Takaya Saito, Marit Espe, Jorge Manuel de Oliveira Fernandes, Luisa M.P. Valente, Kaja Helvik Skjærven
2018

The mitochondrial epigenome of Nile tilapia(Oreochromis niloticus)

Maria Renström, Tomasz Krzysztof Podgorniak, Paul Whatmore, Francesc Piferrer, Steinar Daae Johansen, Kaja Helvik Skjærven, Jorge Manuel de Oliveira Fernandes
2018

Bisfenol A påvirker adferd, genekspresjon og DNA metylering i sebrafisk embryo.

Pål Asgeir Olsvik, Samuel Penglase, Kaja Helvik Skjærven, Marc Angles d'Auriac, Ståle Ellingsen
2018

Profiling DNA methylation patterns of zebrafish liver associated with parental high dietary arachidonic

Anne-Catrin Adam, Kai Kristoffer Lie, Paul Whatmore, Lars Martin Jakt, Mari Moren, Kaja Helvik Skjærven
2018

Nivået av arakidonsyre påvirker genuttrykket og DNA metylering i neste generasjon

Anne-Catrin Adam, Kai Kristoffer Lie, Paul Whatmore, Lars Martin Jakt, Mari Moren, Kaja Helvik Skjærven
2018

Behavioral, transcriptional and whole-genome DNA methylation effects of bisphenol A in zebrafish embryos

Kaja Helvik Skjærven, Paul Whatmore, Samuel Penglase, Marc Angles d'Auriac, Ståle Ellingsen, Pål Asgeir Olsvik
2018

Epigenetic and transcriptional effects of optimizing 1-C nutrients in plant based feeds for Atlantic salmon

Kaja Helvik Skjærven, Jorge Manuel de Oliveira Fernandes, John Arne Dahl, Kristin Hamre, Lars Martin Jakt
2018

Epigenetiske effekter av fiskefôr

Kaja Helvik Skjærven, Lars Martin Jakt, Marit Espe
2018

Effect of dietary inorganic and organic selenium supplementation on reproduction and egg quality in rainbow trout (Oncorhynchus mykiss)

P. Wischhusen, M. Briens, P-A. Geraert, M. Parailloux, B. Bouyssiere, M Bueno, S. Monicou, J. Prahbu, Kaja Helvik Skjærven, B. Fauconneau, Stéphanie Fontagné-Dicharry
2017

Investigating the effect of high dietary arachidonic acid in zebrafish (Danio rerio) using high-throughput technologies

Anne-Catrin Adam, Kai Kristoffer Lie, Mari Moren, Kaja Helvik Skjærven
2016

High arachidonic acid level in the feed for zebrafish changes the metabolism and DNA methylation in both parents and offspring

Anne-Catrin Adam, Kai Kristoffer Lie, Lars Martin Jakt, Mari Moren, Kaja Helvik Skjærven
2015

Changes in metabolic pathways and DNA methylation patterns in zebrafish fed high arachidonic acid levels

Anne-Catrin Adam, Kai Kristoffer Lie, Lars Martin Jakt, Mari Moren, Kaja Helvik Skjærven
2013

Ontogeny of the redox balance in relation to organogenesis in Atlantic cod (Gadus morhua) larvae

Kristin Hamre, Samuel Penglase, Josef Daniel Rasinger, Kaja Helvik Skjærven, Pål Asgeir Olsvik

Annet tidsskriftbidrag

2012

Kysttorsken vår er sterkt truet

Skjærven, Kaja Helvik
Bergens Tidende

Reports and papers

2018

Investigating the metabolic, transcriptomic and DNA methylation signatures of high dietary arachidonic acid in zebrafish. Epigenetic and transcriptional effects in the next generation

Anne-Catrin Adam, Kai Kristoffer Lie, Kaja Helvik Skjærven, Rune Waagbø
2012

Effects of thermal stress on the expression of maternal and zygotic genes in Atlantic cod (Gadus morhua) embryos

Skjærven, Kaja Helvik
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