1
|
Rasal KD, Iquebal MA, Dixit S, Vasam M, Raza M, Sahoo L, Jaiswal S, Nandi S, Mahapatra KD, Rasal A, Udit UK, Meher PK, Murmu K, Angadi UB, Rai A, Kumar D, Sundaray JK. Revealing Alteration in the Hepatic Glucose Metabolism of Genetically Improved Carp, Jayanti Rohu Labeo rohita Fed a High Carbohydrate Diet Using Transcriptome Sequencing. Int J Mol Sci 2020; 21:E8180. [PMID: 33142948 PMCID: PMC7662834 DOI: 10.3390/ijms21218180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 10/20/2020] [Accepted: 10/21/2020] [Indexed: 01/25/2023] Open
Abstract
Although feed cost is the greatest concern in aquaculture, the inclusion of carbohydrates in the fish diet, and their assimilation, are still not well understood in aquaculture species. We identified molecular events that occur due to the inclusion of high carbohydrate levels in the diets of genetically improved 'Jayanti rohu' Labeo rohita. To reveal transcriptional changes in the liver of rohu, a feeding experiment was conducted with three doses of gelatinized starch (20% (control), 40%, and 60%). Transcriptome sequencing revealed totals of 15,232 (4464 up- and 4343 down-regulated) and 15,360 (4478 up- and 4171 down-regulated) differentially expressed genes. Up-regulated transcripts associated with glucose metabolisms, such as hexokinase, PHK, glycogen synthase and PGK, were found in fish fed diets with high starch levels. Interestingly, a de novo lipogenesis mechanism was found to be enriched in the livers of treated fish due to up-regulated transcripts such as FAS, ACCα, and PPARγ. The insulin signaling pathways with enriched PPAR and mTOR were identified by Kyoto Encyclopedia of Genes and Genome (KEGG) as a result of high carbohydrates. This work revealed for the first time the atypical regulation transcripts associated with glucose metabolism and lipogenesis in the livers of Jayanti rohu due to the inclusion of high carbohydrate levels in the diet. This study also encourages the exploration of early nutritional programming for enhancing glucose efficiency in carp species, for sustainable and cost-effective aquaculture production.
Collapse
Affiliation(s)
- Kiran D. Rasal
- Fish Genetics and Biotechnology Division, ICAR-Central Institute of Freshwater Aquaculture, Bhubaneswar 751 002, India; (K.D.R.); (S.D.); (M.V.); (L.S.); (S.N.); (K.D.M.); (A.R.); (U.K.U.); (P.K.M.); (K.M.)
| | - Mir Asif Iquebal
- Centre for Agricultural Bioinformatics (CABin), ICAR-Indian Agricultural Statistics Research Institute, Library Avenue, PUSA, New Delhi 110012, India; (M.A.I.); (M.R.); (S.J.); (U.A.); (A.R.); (D.K.)
| | - Sangita Dixit
- Fish Genetics and Biotechnology Division, ICAR-Central Institute of Freshwater Aquaculture, Bhubaneswar 751 002, India; (K.D.R.); (S.D.); (M.V.); (L.S.); (S.N.); (K.D.M.); (A.R.); (U.K.U.); (P.K.M.); (K.M.)
| | - Manohar Vasam
- Fish Genetics and Biotechnology Division, ICAR-Central Institute of Freshwater Aquaculture, Bhubaneswar 751 002, India; (K.D.R.); (S.D.); (M.V.); (L.S.); (S.N.); (K.D.M.); (A.R.); (U.K.U.); (P.K.M.); (K.M.)
| | - Mustafa Raza
- Centre for Agricultural Bioinformatics (CABin), ICAR-Indian Agricultural Statistics Research Institute, Library Avenue, PUSA, New Delhi 110012, India; (M.A.I.); (M.R.); (S.J.); (U.A.); (A.R.); (D.K.)
| | - Lakshman Sahoo
- Fish Genetics and Biotechnology Division, ICAR-Central Institute of Freshwater Aquaculture, Bhubaneswar 751 002, India; (K.D.R.); (S.D.); (M.V.); (L.S.); (S.N.); (K.D.M.); (A.R.); (U.K.U.); (P.K.M.); (K.M.)
| | - Sarika Jaiswal
- Centre for Agricultural Bioinformatics (CABin), ICAR-Indian Agricultural Statistics Research Institute, Library Avenue, PUSA, New Delhi 110012, India; (M.A.I.); (M.R.); (S.J.); (U.A.); (A.R.); (D.K.)
| | - Samiran Nandi
- Fish Genetics and Biotechnology Division, ICAR-Central Institute of Freshwater Aquaculture, Bhubaneswar 751 002, India; (K.D.R.); (S.D.); (M.V.); (L.S.); (S.N.); (K.D.M.); (A.R.); (U.K.U.); (P.K.M.); (K.M.)
| | - Kanta Das Mahapatra
- Fish Genetics and Biotechnology Division, ICAR-Central Institute of Freshwater Aquaculture, Bhubaneswar 751 002, India; (K.D.R.); (S.D.); (M.V.); (L.S.); (S.N.); (K.D.M.); (A.R.); (U.K.U.); (P.K.M.); (K.M.)
| | - Avinash Rasal
- Fish Genetics and Biotechnology Division, ICAR-Central Institute of Freshwater Aquaculture, Bhubaneswar 751 002, India; (K.D.R.); (S.D.); (M.V.); (L.S.); (S.N.); (K.D.M.); (A.R.); (U.K.U.); (P.K.M.); (K.M.)
| | - Uday Kumar Udit
- Fish Genetics and Biotechnology Division, ICAR-Central Institute of Freshwater Aquaculture, Bhubaneswar 751 002, India; (K.D.R.); (S.D.); (M.V.); (L.S.); (S.N.); (K.D.M.); (A.R.); (U.K.U.); (P.K.M.); (K.M.)
| | - Prem Kumar Meher
- Fish Genetics and Biotechnology Division, ICAR-Central Institute of Freshwater Aquaculture, Bhubaneswar 751 002, India; (K.D.R.); (S.D.); (M.V.); (L.S.); (S.N.); (K.D.M.); (A.R.); (U.K.U.); (P.K.M.); (K.M.)
| | - Khuntia Murmu
- Fish Genetics and Biotechnology Division, ICAR-Central Institute of Freshwater Aquaculture, Bhubaneswar 751 002, India; (K.D.R.); (S.D.); (M.V.); (L.S.); (S.N.); (K.D.M.); (A.R.); (U.K.U.); (P.K.M.); (K.M.)
| | - UB Angadi
- Centre for Agricultural Bioinformatics (CABin), ICAR-Indian Agricultural Statistics Research Institute, Library Avenue, PUSA, New Delhi 110012, India; (M.A.I.); (M.R.); (S.J.); (U.A.); (A.R.); (D.K.)
| | - Anil Rai
- Centre for Agricultural Bioinformatics (CABin), ICAR-Indian Agricultural Statistics Research Institute, Library Avenue, PUSA, New Delhi 110012, India; (M.A.I.); (M.R.); (S.J.); (U.A.); (A.R.); (D.K.)
| | - Dinesh Kumar
- Centre for Agricultural Bioinformatics (CABin), ICAR-Indian Agricultural Statistics Research Institute, Library Avenue, PUSA, New Delhi 110012, India; (M.A.I.); (M.R.); (S.J.); (U.A.); (A.R.); (D.K.)
| | - Jitendra Kumar Sundaray
- Fish Genetics and Biotechnology Division, ICAR-Central Institute of Freshwater Aquaculture, Bhubaneswar 751 002, India; (K.D.R.); (S.D.); (M.V.); (L.S.); (S.N.); (K.D.M.); (A.R.); (U.K.U.); (P.K.M.); (K.M.)
| |
Collapse
|
2
|
Żendzian-Piotrowska M, Łukaszuk B, Maciejczyk M, Ostrowska L, Zalewska A, Chabowski A, Kurek K. High-fat, high-protein, and high-carbohydrate diets affect sphingolipid profile in pancreatic steatosis in Wistar rats. Nutrition 2019; 60:197-205. [DOI: 10.1016/j.nut.2018.10.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 08/23/2018] [Accepted: 10/07/2018] [Indexed: 01/22/2023]
|
3
|
Pck-ing up steam: Widening the salmonid gluconeogenic gene duplication trail. Gene 2019; 698:129-140. [PMID: 30849535 DOI: 10.1016/j.gene.2019.02.079] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 02/03/2019] [Accepted: 02/21/2019] [Indexed: 11/22/2022]
Abstract
Rainbow trout have, as salmonid fish species, undergone sequential genome duplication events in their evolutionary history. In addition to a teleost-specific whole genome duplication approximately 320-350 million years ago, rainbow trout and salmonids in general underwent an additional salmonid lineage-specific genome duplication event approximately 80 million years ago. Through the recent sequencing of salmonid genome sequences, including the rainbow trout, the identification and study of duplicated genes has become available. A particular focus of interest has been the evolution and regulation of rainbow trout gluconeogenic genes, as recent molecular and gene expression evidence points to a possible contribution of previously uncharacterized gluconeogenic gene paralogues to the rainbow trout long-studied glucose intolerant phenotype. Since the publication of the initial rainbow trout genome draft, resequencing and annotation have further improved genome coverage. Taking advantage of these recent improvements, we here identify a salmonid-specific genome duplication of ancestral mitochondrial phosphoenolpyruvate carboxykinase 2 isoenzyme, we termed pck2a and pck2b. Cytosolic phosphoenolpyruvate carboxykinase (Pck1) and, more recently mitochondrial Pck2, are considered to be the rate-limiting enzymes in de novo gluconeogenesis. Following in silico confirmation of salmonid pck2a and pck2b evolutionary history, we simultaneously profiled cytosolic pck1 and mitochondrial pck2a and pck2b expression in rainbow trout liver under several experimental conditions known to regulate hepatic gluconeogenesis. Cytosolic pck1 abundance was increased by nutritional (diets with a high protein to carbohydrate ratio compared to diets with a low carbohydrate to protein ratio) and glucoregulatory endocrine factors (glucagon and cortisol), revealing that the well-described transcriptional regulation of pck1 in mammals is present in rainbow trout. Conversely, and in contrast to mammals, we here describe endocrine regulation of pck2a (decrease in abundance in response to glucagon infusion), and nutritional, social-status-dependent and hypoxia-dependent regulation of pck2b. Specifically, pck2b transcript abundance increased in trout fed a diet with a low protein to carbohydrate ratio compared to a diet with a high protein to carbohydrate ratio, in dominant fish compared to subordinate fish as well as hypoxia. This specific and differential expression of rainbow trout pck2 ohnologues is indicative of functional diversification, and possible functional consequences are discussed in light of the recently highlighted gluconeogenic roles of mitochondrial pck2 in mammalian models.
Collapse
|
4
|
Bou M, Montfort J, Le Cam A, Rallière C, Lebret V, Gabillard JC, Weil C, Gutiérrez J, Rescan PY, Capilla E, Navarro I. Gene expression profile during proliferation and differentiation of rainbow trout adipocyte precursor cells. BMC Genomics 2017; 18:347. [PMID: 28472935 PMCID: PMC5418865 DOI: 10.1186/s12864-017-3728-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 04/26/2017] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Excessive accumulation of adipose tissue in cultured fish is an outstanding problem in aquaculture. To understand the development of adiposity, it is crucial to identify the genes which expression is associated with adipogenic differentiation. Therefore, the transcriptomic profile at different time points (days 3, 8, 15 and 21) along primary culture development of rainbow trout preadipocytes has been investigated using an Agilent trout oligo microarray. RESULTS Our analysis identified 4026 genes differentially expressed (fold-change >3) that were divided into two major clusters corresponding to the main phases observed during the preadipocyte culture: proliferation and differentiation. Proliferation cluster comprised 1028 genes up-regulated from days 3 to 8 of culture meanwhile the differentiation cluster was characterized by 2140 induced genes from days 15 to 21. Proliferation was characterized by enrichment in genes involved in basic cellular and metabolic processes (transcription, ribosome biogenesis, translation and protein folding), cellular remodelling and autophagy. In addition, the implication of the eicosanoid signalling pathway was highlighted during this phase. On the other hand, the terminal differentiation phase was enriched with genes involved in energy production, lipid and carbohydrate metabolism. Moreover, during this phase an enrichment in genes involved in the formation of the lipid droplets was evidenced as well as the activation of the thyroid-receptor/retinoic X receptor (TR/RXR) and the peroxisome proliferator activated receptors (PPARs) signalling pathways. The whole adipogenic process was driven by a coordinated activation of transcription factors and epigenetic modulators. CONCLUSIONS Overall, our study demonstrates the coordinated expression of functionally related genes during proliferation and differentiation of rainbow trout adipocyte cells. Furthermore, the information generated will allow future investigations of specific genes involved in particular stages of fish adipogenesis.
Collapse
Affiliation(s)
- Marta Bou
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Av. Diagonal 643, 08028, Barcelona, Spain.,Present address: Nofima (Norwegian Institute of Food, Fisheries, and Aquaculture Research), P.O. Box 210, N-1432, Ås, Norway
| | - Jerôme Montfort
- INRA, UR1037 Laboratory of Fish Physiology and Genomics, Campus de Beaulieu, Rennes, F-35042, France
| | - Aurélie Le Cam
- INRA, UR1037 Laboratory of Fish Physiology and Genomics, Campus de Beaulieu, Rennes, F-35042, France
| | - Cécile Rallière
- INRA, UR1037 Laboratory of Fish Physiology and Genomics, Campus de Beaulieu, Rennes, F-35042, France
| | - Véronique Lebret
- INRA, UR1037 Laboratory of Fish Physiology and Genomics, Campus de Beaulieu, Rennes, F-35042, France
| | - Jean-Charles Gabillard
- INRA, UR1037 Laboratory of Fish Physiology and Genomics, Campus de Beaulieu, Rennes, F-35042, France
| | - Claudine Weil
- INRA, UR1037 Laboratory of Fish Physiology and Genomics, Campus de Beaulieu, Rennes, F-35042, France
| | - Joaquim Gutiérrez
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Av. Diagonal 643, 08028, Barcelona, Spain
| | - Pierre-Yves Rescan
- INRA, UR1037 Laboratory of Fish Physiology and Genomics, Campus de Beaulieu, Rennes, F-35042, France
| | - Encarnación Capilla
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Av. Diagonal 643, 08028, Barcelona, Spain
| | - Isabel Navarro
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Av. Diagonal 643, 08028, Barcelona, Spain.
| |
Collapse
|
5
|
Conde-Sieira M, Soengas JL. Nutrient Sensing Systems in Fish: Impact on Food Intake Regulation and Energy Homeostasis. Front Neurosci 2017; 10:603. [PMID: 28111540 PMCID: PMC5216673 DOI: 10.3389/fnins.2016.00603] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 12/19/2016] [Indexed: 12/27/2022] Open
Abstract
Evidence obtained in recent years in a few species, especially rainbow trout, supports the presence in fish of nutrient sensing mechanisms. Glucosensing capacity is present in central (hypothalamus and hindbrain) and peripheral [liver, Brockmann bodies (BB, main accumulation of pancreatic endocrine cells in several fish species), and intestine] locations whereas fatty acid sensors seem to be present in hypothalamus, liver and BB. Glucose and fatty acid sensing capacities relate to food intake regulation and metabolism in fish. Hypothalamus is as a signaling integratory center in a way that detection of increased levels of nutrients result in food intake inhibition through changes in the expression of anorexigenic and orexigenic neuropeptides. Moreover, central nutrient sensing modulates functions in the periphery since they elicit changes in hepatic metabolism as well as in hormone secretion to counter-regulate changes in nutrient levels detected in the CNS. At peripheral level, the direct nutrient detection in liver has a crucial role in homeostatic control of glucose and fatty acid whereas in BB and intestine nutrient sensing is probably involved in regulation of hormone secretion from endocrine cells.
Collapse
Affiliation(s)
- Marta Conde-Sieira
- Laboratorio de Fisioloxía Animal, Departamento de Bioloxía Funcional e Ciencias da Saúde, Facultade de Bioloxía, Universidade de Vigo Vigo, Spain
| | - José L Soengas
- Laboratorio de Fisioloxía Animal, Departamento de Bioloxía Funcional e Ciencias da Saúde, Facultade de Bioloxía, Universidade de Vigo Vigo, Spain
| |
Collapse
|
6
|
In vitro evidence in rainbow trout supporting glucosensing mediated by sweet taste receptor, LXR, and mitochondrial activity in Brockmann bodies, and sweet taste receptor in liver. Comp Biochem Physiol B Biochem Mol Biol 2016; 200:6-16. [DOI: 10.1016/j.cbpb.2016.04.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 04/25/2016] [Accepted: 04/27/2016] [Indexed: 12/31/2022]
|
7
|
Glucosensing in liver and Brockmann bodies of rainbow trout through glucokinase-independent mechanisms. Comp Biochem Physiol B Biochem Mol Biol 2016; 199:29-42. [DOI: 10.1016/j.cbpb.2015.09.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 09/17/2015] [Accepted: 09/25/2015] [Indexed: 01/21/2023]
|
8
|
Borey M, Panserat S, Surget A, Cluzeaud M, Plagnes-Juan E, Herman A, Lazzarotto V, Corraze G, Médale F, Lauga B, Burel C. Postprandial kinetics of gene expression of proteins involved in the digestive process in rainbow trout (O. mykiss) and impact of diet composition. FISH PHYSIOLOGY AND BIOCHEMISTRY 2016; 42:1187-1202. [PMID: 26920536 DOI: 10.1007/s10695-016-0208-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 02/14/2016] [Indexed: 06/05/2023]
Abstract
The impact of increased incorporation of plant ingredients on diets for rainbow trout was evaluated in terms of gene expression of gastric (gastric lipase, pepsinogen) and intestinal (prolidase, maltase, phospholipase A2) digestive enzymes and nutrient transporters (peptide and glucose transporters), as well as of postprandial levels of plasma glucose, triglycerides and total free amino acids. For that purpose, trout alevins were fed from the start of exogenous feeding one of three different experimental diets: a diet rich in fish meal and fish oil (FM-FO), a plant-based diet (noFM-noFO) totally free from fish meal and fish oil, but containing plant ingredients and a Mixed diet (Mixed) intermediate between the FM-FO and noFM-noFO diets. After 16 months of rearing, all fish were left unfed for 72 h and then given a single meal to satiation. Blood, stomach and anterior intestine were sampled before the meal and at 2, 6 and 12 h after this meal. The postprandial kinetics of gene expression of gastric and intestinal digestive enzymes and nutrient transporters were then followed in trout fed the FM-FO diet. The postprandial profiles showed that the expression of almost all genes studied was stimulated by the presence of nutrients in the digestive tract of trout, but the timing (appearance of peaks) varied between genes. Based on these data, we have focused on the molecular response to dietary factors in the stomach and the intestine at 6 and 12 h after feeding, respectively. The reduction in FM and FO levels of dietary incorporation induced a significant decrease in the gene expression of gastric lipase, GLUT2 and PEPT1. The plasma glucose and triglycerides levels were also reduced in trout fed the noFM-noFO diet. Consequently, the present study suggests a decrease in digestive capacities in trout fed a diet rich in plant ingredients.
Collapse
Affiliation(s)
- Marion Borey
- UMR1419 Nutrition, Métabolisme, Aquaculture, INRA, F-64310, Saint Pee sur Nivelle, France
- EEM, UMR 5254 IPREM, Equipe Environnement et Microbiologie, Université de Pau et des Pays de l'Adour, 64013, Pau, France
| | - Stephane Panserat
- UMR1419 Nutrition, Métabolisme, Aquaculture, INRA, F-64310, Saint Pee sur Nivelle, France
| | - Anne Surget
- UMR1419 Nutrition, Métabolisme, Aquaculture, INRA, F-64310, Saint Pee sur Nivelle, France
| | - Marianne Cluzeaud
- UMR1419 Nutrition, Métabolisme, Aquaculture, INRA, F-64310, Saint Pee sur Nivelle, France
| | - Elisabeth Plagnes-Juan
- UMR1419 Nutrition, Métabolisme, Aquaculture, INRA, F-64310, Saint Pee sur Nivelle, France
| | - Alexandre Herman
- UMR1419 Nutrition, Métabolisme, Aquaculture, INRA, F-64310, Saint Pee sur Nivelle, France
| | - Viviana Lazzarotto
- UMR1419 Nutrition, Métabolisme, Aquaculture, INRA, F-64310, Saint Pee sur Nivelle, France
| | - Geneviève Corraze
- UMR1419 Nutrition, Métabolisme, Aquaculture, INRA, F-64310, Saint Pee sur Nivelle, France
| | - Françoise Médale
- UMR1419 Nutrition, Métabolisme, Aquaculture, INRA, F-64310, Saint Pee sur Nivelle, France
| | - Beatrice Lauga
- EEM, UMR 5254 IPREM, Equipe Environnement et Microbiologie, Université de Pau et des Pays de l'Adour, 64013, Pau, France
| | - Christine Burel
- UMR1419 Nutrition, Métabolisme, Aquaculture, INRA, F-64310, Saint Pee sur Nivelle, France.
| |
Collapse
|
9
|
Bou M, Todorčević M, Torgersen J, Škugor S, Navarro I, Ruyter B. De novo lipogenesis in Atlantic salmon adipocytes. Biochim Biophys Acta Gen Subj 2016; 1860:86-96. [DOI: 10.1016/j.bbagen.2015.10.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2015] [Revised: 10/14/2015] [Accepted: 10/23/2015] [Indexed: 12/13/2022]
|
10
|
Dai W, Panserat S, Kaushik S, Terrier F, Plagnes-Juan E, Seiliez I, Skiba-Cassy S. Hepatic fatty acid biosynthesis is more responsive to protein than carbohydrate in rainbow trout during acute stimulations. Am J Physiol Regul Integr Comp Physiol 2016; 310:R74-86. [DOI: 10.1152/ajpregu.00281.2015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 10/20/2015] [Indexed: 12/21/2022]
Abstract
The link between dietary carbohydrate/protein and de novo lipogenesis (DNL) remains debatable in carnivorous fish. We aimed to evaluate and compare the response of hepatic lipogenic gene expression to dietary carbohydrate intake/glucose and dietary protein intake/amino acids (AAs) during acute stimulations using both in vivo and in vitro approaches. For the in vivo trial, three different diets and a controlled-feeding method were employed to supply fixed amount of dietary protein or carbohydrate in a single meal; for the in vitro trial, primary hepatocytes were stimulated with a low or high level of glucose (3 mM or 20 mM) and a low or high level of AAs (one-fold or four-fold concentrated AAs). In vitro data showed that a high level of AAs upregulated the expression of enzymes involved in DNL [fatty acid synthase (FAS) and ATP citrate lyase (ACLY)], lipid bioconversion [elongation of very long chain fatty acids like-5 (Elovl5), Elovl2, Δ6 fatty acyl desaturase (D6D) and stearoyl-CoA desaturase-1 (SCD1)], NADPH production [glucose-6-phosphate dehydrogenase (G6PDH) and malic enzyme (ME)], and transcriptional factor sterol regulatory element binding protein 1-like, while a high level of glucose only elevated the expression of ME. Data in trout liver also showed that high dietary protein intake induced higher lipogenic gene expression (FAS, ACLY, and Elovl2) regardless of dietary carbohydrate intake, while high carbohydrate intake markedly suppressed the expression of acetyl-CoA carboxylase (ACC) and Elovl5. Overall, we conclude that, unlike rodents or humans, hepatic fatty acid biosynthetic gene expression in rainbow trout is more responsive to dietary protein intake/AAs than dietary carbohydrate intake/glucose during acute stimulations. This discrepancy probably represents one important physiological and metabolic difference between carnivores and omnivores.
Collapse
Affiliation(s)
- Weiwei Dai
- Institut National de la Recherche Agronomique, UR 1067 Nutrition Métabolisme, Aquaculture, Aquapôle, CD 918, Saint-Pée-sur-Nivelle, France
| | - Stéphane Panserat
- Institut National de la Recherche Agronomique, UR 1067 Nutrition Métabolisme, Aquaculture, Aquapôle, CD 918, Saint-Pée-sur-Nivelle, France
| | - Sadasivam Kaushik
- Institut National de la Recherche Agronomique, UR 1067 Nutrition Métabolisme, Aquaculture, Aquapôle, CD 918, Saint-Pée-sur-Nivelle, France
| | - Frédéric Terrier
- Institut National de la Recherche Agronomique, UR 1067 Nutrition Métabolisme, Aquaculture, Aquapôle, CD 918, Saint-Pée-sur-Nivelle, France
| | - Elisabeth Plagnes-Juan
- Institut National de la Recherche Agronomique, UR 1067 Nutrition Métabolisme, Aquaculture, Aquapôle, CD 918, Saint-Pée-sur-Nivelle, France
| | - Iban Seiliez
- Institut National de la Recherche Agronomique, UR 1067 Nutrition Métabolisme, Aquaculture, Aquapôle, CD 918, Saint-Pée-sur-Nivelle, France
| | - Sandrine Skiba-Cassy
- Institut National de la Recherche Agronomique, UR 1067 Nutrition Métabolisme, Aquaculture, Aquapôle, CD 918, Saint-Pée-sur-Nivelle, France
| |
Collapse
|
11
|
Jin J, Médale F, Kamalam BS, Aguirre P, Véron V, Panserat S. Comparison of glucose and lipid metabolic gene expressions between fat and lean lines of rainbow trout after a glucose load. PLoS One 2014; 9:e105548. [PMID: 25141351 PMCID: PMC4139350 DOI: 10.1371/journal.pone.0105548] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Accepted: 07/23/2014] [Indexed: 12/11/2022] Open
Abstract
Two experimental rainbow trout lines developed through divergent selection for low (Lean ‘L’ line) or high (Fat ‘F’ line) muscle fat content were used as models to study the genetic determinism of fat depots. Previous nutritional studies suggested that the F line had a better capability to use glucose than the L line during feeding trials. Based on that, we put forward the hypothesis that F line has a greater metabolic ability to clear a glucose load effectively, compared to L line. In order to test this hypothesis, 250 mg/kg glucose was intraperitoneally injected to the two rainbow trout lines fasted for 48 h. Hyperglycemia was observed after glucose treatment in both lines without affecting the phosphorylation of AMPK (cellular energy sensor) and Akt-TOR (insulin signaling) components. Liver glucokinase and glucose-6-phosphate dehydrogenase expression levels were increased by glucose, whereas mRNA levels of β-oxidation enzymes (CPT1a, CPT1b, HOAD and ACO) were down-regulated in the white skeletal muscle of both lines. Regarding the genotype effect, concordant with normoglycemia at 12 h after glucose treatment, higher muscle glycogen was found in F line compared to L line which exhibited hyperglycemia. Moreover, mRNA levels of hepatic glycolytic enzymes (GK, 6PFK and PK), gluconeogenic enzyme PEPCK and muscle fatty acid oxidation enzymes (CPT1a, CPT1b and HOAD) were concurrently higher in the F line. Overall, these findings suggest that F line may have a better ability to maintain glucose homeostasis than L line.
Collapse
Affiliation(s)
- Junyan Jin
- INRA, UR 1067 Nutrition Metabolism Aquaculture, Institut National de la Recherche Agronomique, Saint-Pée-sur-Nivelle, France
| | - Françoise Médale
- INRA, UR 1067 Nutrition Metabolism Aquaculture, Institut National de la Recherche Agronomique, Saint-Pée-sur-Nivelle, France
| | - Biju Sam Kamalam
- INRA, UR 1067 Nutrition Metabolism Aquaculture, Institut National de la Recherche Agronomique, Saint-Pée-sur-Nivelle, France
| | - Peyo Aguirre
- INRA, UR 1067 Nutrition Metabolism Aquaculture, Institut National de la Recherche Agronomique, Saint-Pée-sur-Nivelle, France
| | - Vincent Véron
- INRA, UR 1067 Nutrition Metabolism Aquaculture, Institut National de la Recherche Agronomique, Saint-Pée-sur-Nivelle, France
| | - Stéphane Panserat
- INRA, UR 1067 Nutrition Metabolism Aquaculture, Institut National de la Recherche Agronomique, Saint-Pée-sur-Nivelle, France
- * E-mail:
| |
Collapse
|
12
|
Librán-Pérez M, López-Patiño MA, Míguez JM, Soengas JL. Oleic acid and octanoic acid sensing capacity in rainbow trout Oncorhynchus mykiss is direct in hypothalamus and Brockmann bodies. PLoS One 2013; 8:e59507. [PMID: 23533628 PMCID: PMC3606115 DOI: 10.1371/journal.pone.0059507] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Accepted: 02/15/2013] [Indexed: 12/12/2022] Open
Abstract
In a previous study, we provided evidence for the presence in hypothalamus and Brockmann bodies (BB) of rainbow trout Oncorhynchus mykiss of sensing systems responding to changes in levels of oleic acid (long-chain fatty acid, LCFA) or octanoic acid (medium-chain fatty acid, MCFA). Since those effects could be attributed to an indirect effect, in the present study, we evaluated in vitro if hypothalamus and BB respond to changes in FA in a way similar to that observed in vivo. In a first set of experiments, we evaluated in hypothalamus and BB exposed to increased oleic acic or octanoic acid concentrations changes in parameters related to FA metabolism, FA transport, nuclear receptors and transcription factors, reactive oxygen species (ROS) effectors, components of the KATP channel, and (in hypothalamus) neuropeptides related to food intake. In a second set of experiments, we evaluated in hypothalamus the response of those parameters to oleic acid or octanoic acid in the presence of inhibitors of fatty acid sensing components. The responses observed in vitro in hypothalamus are comparable to those previously observed in vivo and specific inhibitors counteracted in many cases the effects of FA. These results support the capacity of rainbow trout hypothalamus to directly sense changes in MCFA or LCFA levels. In BB increased concentrations of oleic acid or octanoic acid induced changes that in general were comparable to those observed in hypothalamus supporting direct FA sensing in this tissue. However, those changes were not coincident with those observed in vivo allowing us to suggest that the FA sensing capacity of BB previously characterized in vivo is influenced by other neuroendocrine systems.
Collapse
Affiliation(s)
- Marta Librán-Pérez
- Laboratorio de Fisioloxía Animal, Departamento de Bioloxía Funcional e Ciencias da Saúde, Facultade de Bioloxía, Universidade de Vigo, Vigo, Spain
| | - Marcos A. López-Patiño
- Laboratorio de Fisioloxía Animal, Departamento de Bioloxía Funcional e Ciencias da Saúde, Facultade de Bioloxía, Universidade de Vigo, Vigo, Spain
| | - Jesús M. Míguez
- Laboratorio de Fisioloxía Animal, Departamento de Bioloxía Funcional e Ciencias da Saúde, Facultade de Bioloxía, Universidade de Vigo, Vigo, Spain
| | - José L. Soengas
- Laboratorio de Fisioloxía Animal, Departamento de Bioloxía Funcional e Ciencias da Saúde, Facultade de Bioloxía, Universidade de Vigo, Vigo, Spain
- * E-mail:
| |
Collapse
|
13
|
Glucose metabolism in fish: a review. J Comp Physiol B 2012; 182:1015-45. [PMID: 22476584 DOI: 10.1007/s00360-012-0658-7] [Citation(s) in RCA: 376] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Revised: 03/06/2012] [Accepted: 03/10/2012] [Indexed: 02/07/2023]
Abstract
Teleost fishes represent a highly diverse group consisting of more than 20,000 species living across all aquatic environments. This group has significant economical, societal and environmental impacts, yet research efforts have concentrated primarily on salmonid and cyprinid species. This review examines carbohydrate/glucose metabolism and its regulation in these model species including the role of hormones and diet. Over the past decade, molecular tools have been used to address some of the downstream components of these processes and these are incorporated to better understand the roles played by carbohydrates and their regulatory paths. Glucose metabolism remains a contentious area as many fish species are traditionally considered glucose intolerant and, therefore, one might expect that the use and storage of glucose would be considered of minor importance. However, the actual picture is not so clear since the apparent intolerance of fish to carbohydrates is not evident in herbivorous and omnivorous species and even in carnivorous species, glucose is important for specific tissues and/or for specific activities. Thus, our aim is to up-date carbohydrate metabolism in fish, placing it to the context of these new experimental tools and its relationship to dietary intake. Finally, we suggest that new research directions ultimately will lead to a better understanding of these processes.
Collapse
|