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Javanshir Khoei A. A comparative study on the accumulation of toxic heavy metals in fish of the Oman Sea: effects of fish size, spatial distribution and trophic level. TOXIN REV 2022. [DOI: 10.1080/15569543.2022.2040033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Arash Javanshir Khoei
- Department of Fisheries, Faculty of Natural Resources, University of Tehran, Tehran, Iran
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Kwasek K, Thorne-Lyman AL, Phillips M. Can human nutrition be improved through better fish feeding practices? a review paper. Crit Rev Food Sci Nutr 2020; 60:3822-3835. [PMID: 31983214 DOI: 10.1080/10408398.2019.1708698] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Achieving Sustainable Development Goal 2 of zero hunger and malnutrition by 2030 will require dietary shifts that include increasing the consumption of nutrient dense foods by populations in low- and middle-income countries. Animal source foods are known to be rich in a number of highly bioavailable nutrients that otherwise are not often consumed in the staple-food based diets of poorer populations throughout the world. Fish is the dominant animal source food in many low- and middle-income countries in the global south and is available from both fisheries and aquaculture. Consumers often perceive that wild caught fish have higher nutritional value than fish produced through aquaculture, and this may be true for some nutrients, for example omega-3 fatty acid content. However, there is potential to modify the nutritional value of farmed fish through feeds and through production systems, illustrated by the common practice of supplementing omega-3 fatty acids in fish diets to optimize their fatty acid profile. This manuscript reviews the evidence related to fish feeds and the nutritional composition of fish with respect to a number of nutrients of interest to human health, including iron, zinc, vitamins A and D, selenium, calcium, and omega-3 fatty acids, with low- and middle-income country populations in mind. In general, we find that the research on fortification of fish diet particularly with vitamins and minerals has not been directed toward human health but rather toward improvement of fish growth and health performance. We were unable to identify any studies directly exploring the impact of fish feed modification on the health of human consumers of fish, but as nutrition and health rises in the development agenda and consumer attention, the topic requires more urgent attention in future feed formulations.
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Affiliation(s)
- Karolina Kwasek
- Center for Fisheries, Aquaculture and Aquatic Sciences, School of Biological Sciences, Southern Illinois University-Carbondale, Carbondale, Illinois, USA.,WorldFish Bayan Lepas, Penang, Malaysia
| | - Andrew L Thorne-Lyman
- WorldFish Bayan Lepas, Penang, Malaysia.,Center for Human Nutrition, Department of International Health, John Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA.,Johns Hopkins Center for a Livable Future, Baltimore, Maryland, USA
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3
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Öztürk DK, Baki B, Karayücel İ, Öztürk R, Gören GU, Karayücel S. Determination of Seasonal Vitamin and Mineral Contents of Sea Bream (Sparus aurata L., 1758) Cultured in Net Cages in Central Black Sea Region. Biol Trace Elem Res 2019; 187:517-525. [PMID: 29754284 DOI: 10.1007/s12011-018-1382-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 05/07/2018] [Indexed: 10/16/2022]
Abstract
This study aimed to determine the seasonal vitamin and mineral contents of sea bream (Sparus aurata) cultured in net cages in Central Black Sea region. The average seasonal A, D3, and E vitamins values in fish meat were between 0.27 ± 0.02-0.60 ± 0.00, 0.98 ± 0.01-1.70 ± 0.00, and 3.10 ± 0.14-6.00 ± 0.21 mg/kg, respectively (p < 0.05). The average seasonal Ca, Fe, K, Mg, Na, P, Zn, and Se values in fish meat were between 276.90 ± 0.99-1788.50 ± 51.27 (p < 0.05), 3.50 ± 0.12-4.47 ± 0.18 (p > 0.05), 4244.50 ± 8.84-4761.50 ± 1.06 (p < 0.05), 251.55 ± 2.55-312.65 ± 11.42 (p < 0.05), 56.49 ± 0.04-128.75 ± 0.18 (p < 0.05), 2234.50 ± 15.20-2619.00 ± 7.07 (p < 0.05), 5.62 ± 0.10-15.30 ± 0.22 (p < 0.05), and 0.30 ± 0.00-0.38 ± 0.01 mg/kg (p > 0.05), respectively. As a result, it can be concluded that sea bream cultured in the Central Black Sea region is a rich source of nutrients in terms of vitamins and mineral matters, and fish size, feed quality, and the environmental factors are influential on the contents of vitamin and mineral substances in the fish tissue.
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Affiliation(s)
- Dilara Kaya Öztürk
- Faculty of Fisheries and Aquatic Science, Department of Aquaculture, Sinop University, Sinop, Turkey.
| | - Birol Baki
- Faculty of Fisheries and Aquatic Science, Department of Aquaculture, Sinop University, Sinop, Turkey
| | - İsmihan Karayücel
- Faculty of Fisheries and Aquatic Science, Department of Aquaculture, Sinop University, Sinop, Turkey
| | - Recep Öztürk
- Sagun Aquaculture, Fisheries Ind. Tra. Lmt. Com., Sinop, Turkey
| | - Gülşen Uzun Gören
- Faculty of Fisheries and Aquatic Science, Department of Aquaculture, Sinop University, Sinop, Turkey
| | - Sedat Karayücel
- Faculty of Fisheries and Aquatic Science, Department of Aquaculture, Sinop University, Sinop, Turkey
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4
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Domínguez D, Rimoldi S, Robaina LE, Torrecillas S, Terova G, Zamorano MJ, Karalazos V, Hamre K, Izquierdo M. Inorganic, organic, and encapsulated minerals in vegetable meal based diets for Sparus aurata (Linnaeus, 1758). PeerJ 2017; 5:e3710. [PMID: 29093992 PMCID: PMC5661455 DOI: 10.7717/peerj.3710] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 07/28/2017] [Indexed: 11/24/2022] Open
Abstract
Substituting fishmeal (FM) with vegetable meal (VM) can markedly affect the mineral composition of feeds, and may require additional mineral supplementation. Their bioavailability and optimal supplementation levels depend also on the form of delivery of minerals. The aim of the study was to determine the effect of different delivery forms of three major trace elements (Zn, Mn and Se) in a marine teleost. Gilthead sea bream juveniles of 22.5 g were fed a VM-based diet for 12 weeks that was either not supplemented with these minerals or supplemented with inorganic, organic, or encapsulated inorganic forms of minerals in triplicate and compared to a FM-based diet. Our results showed that mineral delivery form significantly affected the biochemical composition and morphology of posterior vertebrae. Supplementation of VM-based diets with inorganic forms of the target minerals significantly promoted growth, increased the vertebral weight and content of ash and Zn, enhanced bone mineralization and affected the vertebral shape. Conversely, encapsulation of inorganic minerals reduced fish growth and vertebral mineral content, whereas supplementation of organic minerals, enhanced bone osteogenesis by upregulating bone morphogenetic protein 2 (bmp2) gene and produced vertebrae with a larger length in relation to height. Furthermore, organic mineral forms of delivery downregulated the expression of oxidative stress related genes, such as Cu/Zn superoxide dismutase (Cu/Zn sod) and glutathione peroxidase 1 (gpx-1), suggesting thus that dietary minerals supplemented in the organic form could be reasonably considered more effective than the inorganic and encapsulated forms of supply.
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Affiliation(s)
- David Domínguez
- Grupo de Investigación en Acuicultura (GIA), University Institute Ecoaqua, University of Las Palmas de Gran Canaria, Telde, Las Palmas, Canary Islands, Spain
| | - Simona Rimoldi
- Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
| | - Lidia E Robaina
- Grupo de Investigación en Acuicultura (GIA), University Institute Ecoaqua, University of Las Palmas de Gran Canaria, Telde, Las Palmas, Canary Islands, Spain
| | - Silvia Torrecillas
- Grupo de Investigación en Acuicultura (GIA), University Institute Ecoaqua, University of Las Palmas de Gran Canaria, Telde, Las Palmas, Canary Islands, Spain
| | - Genciana Terova
- Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy.,Inter-University Centre for Research in Protein Biotechnologies, "The Protein Factory", Polytechnic University of Milan and University of Insubria, Varese, Italy
| | - María J Zamorano
- Grupo de Investigación en Acuicultura (GIA), University Institute Ecoaqua, University of Las Palmas de Gran Canaria, Telde, Las Palmas, Canary Islands, Spain
| | | | - Kristin Hamre
- National Institute of Nutrition and Seafood Research (NIFES), Bergen, Norway
| | - Marisol Izquierdo
- Grupo de Investigación en Acuicultura (GIA), University Institute Ecoaqua, University of Las Palmas de Gran Canaria, Telde, Las Palmas, Canary Islands, Spain
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Carpenè E, Andreani G, Isani G. Trace elements in unconventional animals: A 40-year experience. J Trace Elem Med Biol 2017; 43:169-179. [PMID: 28215718 DOI: 10.1016/j.jtemb.2017.02.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 12/22/2016] [Accepted: 02/04/2017] [Indexed: 12/13/2022]
Abstract
The role of trace elements in animal health has attracted increasing interest in recent years. The essentiality and toxicity of these elements have been extensively investigated in humans, laboratory animal models and partially in domestic animals, whereas little is known about trace element metabolism in most living organisms. Forty years ago our research started on Cd metabolism in molluscs, thereafter expanding to Zn, Cu, and Fe metabolism in many unconventional animal species of veterinary interest. This review summarizes the main results obtained over this long period of time: some of the findings are original and have not been published to date. They are discussed in more detail and compared with data obtained in conventional animals, including man.
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Affiliation(s)
- Emilio Carpenè
- Department of Veterinary Medical Sciences, Alma Mater Studiorum-University of Bologna, Via Tolara di Sopra 50, 40064 Ozzano Emilia, Bologna, Italy
| | - Giulia Andreani
- Department of Veterinary Medical Sciences, Alma Mater Studiorum-University of Bologna, Via Tolara di Sopra 50, 40064 Ozzano Emilia, Bologna, Italy
| | - Gloria Isani
- Department of Veterinary Medical Sciences, Alma Mater Studiorum-University of Bologna, Via Tolara di Sopra 50, 40064 Ozzano Emilia, Bologna, Italy.
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6
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Isani G, Falcioni ML, Barucca G, Sekar D, Andreani G, Carpenè E, Falcioni G. Comparative toxicity of CuO nanoparticles and CuSO4 in rainbow trout. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2013; 97:40-46. [PMID: 23932511 DOI: 10.1016/j.ecoenv.2013.07.001] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Revised: 06/18/2013] [Accepted: 07/02/2013] [Indexed: 06/02/2023]
Abstract
This study compared the toxicity and accumulation of two different Cu compounds, CuO nanoparticles (NPs) and soluble CuSO4, in erythrocytes and different tissues in rainbow trout (Oncorhynchus mykiss). The crystal structure of CuO NP analysed by XRD indicates that the NP are Tenorite, a monoclinic CuO. The in vitro toxicity results indicate that both Cu compounds increase the haemolysis rate in a dose-dependent way, but the effect was reduced treating cells with CuO NP. Moreover, both Cu compounds induce DNA damage and the entity of the damage, similarly to haemolysis, was more marked in cells treated with CuSO4. In vivo results, obtained after intraperitoneal injection, showed that Cu concentrations were significantly higher in gills (p<0.0001), kidney (p=0.007) and liver (p<0.05) of exposed fish with a significant increase in plasma Cu concentration 15h after CuSO4 treatment. Cu concentrations were significantly higher in fish exposed to CuSO4 than CuO in kidney (p<0.05) and gills (p<0.0001). Significant DNA damage with respect to controls was detected only when Cu was injected as CuSO4. The present data could serve to evaluate environmental Cu toxicity in fish depending on Cu speciation.
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Affiliation(s)
- Gloria Isani
- Department of Veterinary Medical Sciences, University of Bologna, Italy.
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7
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Cirillo T, Amodio Cocchieri R, Fasano E, Lucisano A, Tafuri S, Ferrante MC, Carpenè E, Andreani G, Isani G. Cadmium accumulation and antioxidant responses in Sparus aurata exposed to waterborne cadmium. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2012; 62:118-126. [PMID: 21553241 DOI: 10.1007/s00244-011-9676-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2010] [Accepted: 04/18/2011] [Indexed: 05/29/2023]
Abstract
Cadmium (Cd), a nonessential trace element, is rapidly accumulated by most living organisms and subsequently exerts its toxicity at different molecular levels. This study exposed gilthead sea bream (Sparus aurata) to waterborne 0.1 mg/l Cd for 11 days and investigated the Cd accumulation pattern, lipid oxidation, and response of antioxidant defences. At the end of the experiment, mean Cd concentrations in gills and liver, the organs most prone to metal accumulation, were 209.4 and 371.7 ng/g ww, respectively. Muscle did not show any Cd retention during the 11 days of exposure. In liver, the cytosolic fraction of the metal was chelated into the nontoxic form by metallothionein (MT), a specific Cd-inducible protein. Zn and Cu concentrations were not influenced by Cd exposure. Glutathione (GSH) concentrations and the antioxidant enzyme activities of GSH reductase and GSH peroxidase showed an overall decreasing trend. In addition, lipid and aqueous hydroperoxide levels did not show any significant variation. Oxidative stress indirectly generated by Cd seems to be compensated for by the different biochemical systems tailored to decrease cellular damage. In particular, the negative effects of Cd accumulation in tissues were probably counteracted by the induction of MT.
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Affiliation(s)
- T Cirillo
- Department of Food Science, Federico II University of Naples, Naples, Italy
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8
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Minganti V, Drava G, De Pellegrini R, Siccardi C. Trace elements in farmed and wild gilthead seabream, Sparus aurata. MARINE POLLUTION BULLETIN 2010; 60:2022-2025. [PMID: 20732698 DOI: 10.1016/j.marpolbul.2010.07.023] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2010] [Revised: 07/01/2010] [Accepted: 07/23/2010] [Indexed: 05/29/2023]
Abstract
In the present study, we sought to determine the concentration of several trace elements (total and organic mercury, selenium, cadmium, lead, arsenic, copper, chromium, iron, manganese, molybdenum, vanadium and zinc) in muscle tissue of gilthead seabream (Sparus aurata), an edible finfish species that is widely cultured in the Mediterranean area. The phenomenon of bioaccumulation and bioamplification (especially of mercury) was investigated by comparing farmed fish with wild specimens of the same species. Farmed specimens showed mercury and arsenic concentrations significantly lower than wild specimens, and no relationship was found between mercury concentration and body size. The lower level of methylmercury in farmed fish has important implications for consumer health.
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Affiliation(s)
- Vincenzo Minganti
- Dipartimento di Chimica e Tecnologie Farmaceutiche ed Alimentari, Università di Genova, Via Brigata Salerno 13, 16147 Genova, Italy.
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9
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Craig PM, Wood CM, McClelland GB. Water chemistry alters gene expression and physiological end points of chronic waterborne copper exposure in zebrafish, Danio rerio. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2010; 44:2156-2162. [PMID: 20163087 DOI: 10.1021/es902995q] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
This is the first study to implement a genomic approach to ascertain both transcriptional and functional end points of chronic Cu toxicity in fish associated with experimentally manipulated water chemistries. Over 21 d, zebrafish acclimated to softwater (Na(+) = 0.06 mM, Ca(2+) = 0.08 mM, Mg(2+) = 0.03 mM) were exposed to the following: soft-water (Ctrl); 12 microg L(-1) Cu (Cu); 3.3 mM Na(+) (Na); 3.3 mM Na(+) + 12 microg L(-1) Cu (Na + Cu); 3.3 mM Ca(2+) (Ca); or 3.3 mM Ca(2+) + 12 microg L(-1) Cu (Ca + Cu). Although effective at reducing Cu load in all tissues, Na(+) in the presence of Cu did not decrease the degree of oxidative damage, particularly in the gill and gut. In contrast, Ca + Cu treatment decreased Cu accumulation in gill, but not liver or gut, with no reduction in oxidative damage. Transcriptional analysis of candidate genes (atp7a, ctr1, ECaC, esr1) showed principally a down regulation of transcripts with the Cu only treatment, while Ca + Cu treatment restored some of the genes to control levels. Conversely, the Na + Cu treatment had a strong, opposing affect when compared to that of Cu alone. Zebrafish Affymetrix GeneChips revealed significantly clustered patterns of expression. Changes in expression induced by Cu appeared to be opposite to the majority of the other treatments. Our data on the preventative or enhancing effects of Na(+) and Ca(2+) both alone and in the presence of Cu, may, in the future, facilitate the incorporation of gene expression end points into a biotic ligand model predicting chronic Cu toxicity in this tropical model species of genomic importance.
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Affiliation(s)
- Paul M Craig
- Department of Biology, McMaster University, 1280 Main St. West, Hamilton, ON, L8S 4K1, Canada.
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Kenari AA, Regenstein JM, Hosseini SV, Rezaei M, Tahergorabi R, Nazari RM, Mogaddasi M, Kaboli SA. Amino Acid and Fatty Acid Composition of Cultured Beluga (Huso huso) of Different Ages. JOURNAL OF AQUATIC FOOD PRODUCT TECHNOLOGY 2009. [DOI: 10.1080/10498850902758586] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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11
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Minghetti M, Leaver MJ, Carpenè E, George SG. Copper transporter 1, metallothionein and glutathione reductase genes are differentially expressed in tissues of sea bream (Sparus aurata) after exposure to dietary or waterborne copper. Comp Biochem Physiol C Toxicol Pharmacol 2008; 147:450-9. [PMID: 18304880 DOI: 10.1016/j.cbpc.2008.01.014] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2007] [Revised: 01/28/2008] [Accepted: 01/29/2008] [Indexed: 10/22/2022]
Abstract
The high affinity copper transporter 1 (Ctr1), metallothionein (MT) and glutathione reductase (GR) are essential for copper uptake, sequestration and defense respectively. Following rearing on a normal commercial diet (12.6+/-0.2 mg kg(-1) Cu), sea bream were fed an experimental control diet lacking mineral mix (7.7+/-0.3 mg kg(-1) Cu), an experimental diet enhanced with Cu (135+/-4 mg kg(-1) Cu) or an experimental diet (7.7+/-0.3 mg kg(-1) Cu) whilst exposed to Cu in water (0.294+/-0.013 mg L(-1)). Fish were sampled at 0, 15 and 30 days after exposures. Fish fed the Cu-enhanced experimental diet showed lower levels of expression of Ctr1 in the intestine and liver compared to fish fed control experimental diets, whilst Ctr1 expression in the gill and kidney was unaffected by excess dietary Cu exposure. Waterborne-Cu exposure increased Ctr1 mRNA levels in the intestine and the kidney compared to experimental controls. Excess dietary Cu exposure had no effect on levels of metallothionein (MT) mRNA, and the only effect of dietary excess Cu on glutathione reductase (GR) mRNA was a decrease in the intestine. Both MT mRNA and GR were increased in the liver and gill after waterborne-Cu exposure, compared to levels in fish fed experimental control low Cu diets. Thus, Ctr1, MT and GR mRNA expression in response to excess Cu is dependent on the route of exposure. Furthermore, the tissue expression profile of sea bream Ctr1 is consistent with the known physiology of copper exposure in fish and indicates a role both in essential copper uptake and in avoidance of excess dietary and waterborne copper influx.
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Affiliation(s)
- M Minghetti
- Institute of Aquaculture, University of Stirling, Stirling FK9 4LA, United Kingdom
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12
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Amino acid and fatty acid composition of wild sea bass (Dicentrarchus labrax): a seasonal differentiation. Eur Food Res Technol 2005. [DOI: 10.1007/s00217-005-0040-z] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Rodrigues PNS, Pereira FA. Effect of dietary iron overload on Photobacterium damselae ssp. piscicida pathogenicity in sea bass, Dicentrarchus labrax (L.). JOURNAL OF FISH DISEASES 2004; 27:673-676. [PMID: 15509262 DOI: 10.1111/j.1365-2761.2004.00580.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Affiliation(s)
- P N S Rodrigues
- Molecular Immunology Unit, Institute for Molecular and Cell Biology (IBMC), Porto, Portugal.
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14
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Romani R, Antognelli C, Baldracchini F, De Santis A, Isani G, Giovannini E, Rosi G. Increased acetylcholinesterase activities in specimens of Sparus auratus exposed to sublethal copper concentrations. Chem Biol Interact 2003; 145:321-9. [PMID: 12732458 DOI: 10.1016/s0009-2797(03)00058-9] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The present study looks at possible changes in the activity of acetylcholinesterase (AChE) in tissues (brain and white muscle) of the Mediterranean bony fish Sparus auratus after a 20 days exposure to sublethal concentrations (0.1 or 0.5 ppm) of copper in the marine water and on control untreated animals. The trials also included measurements of Cu concentration in the tissues to evaluate possible metal accumulation. Moreover, sedimentation analysis as well as V(max) and K(m) determination were carried out in tissue extracts of Cu-exposed or control animals. V(max) and K(m) were also determined with or without addition of Cu(2+) in the assay. No Cu accumulation occurred in brain and muscle after Cu exposure. AChE showed in both tissues a molecular polymorphism with putative globular (G) and asymmetric (A) forms. Cu exposition led to an increased specific activity and improved catalytic efficiency of AChE in brain and muscle, seemingly regarding G forms. The increase in catalytic efficiency also resulted from the in vitro assay with tissue extracts and Cu(2+) addition. The higher AChE activity and catalytic efficiency in both tissues after Cu exposition and without metal accumulation, suggests an increase of free Cu aliquot into the cells, likely due to mechanisms of metal homeostasis.
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Affiliation(s)
- Rita Romani
- Division of Cellular and Molecular Biology, Department of Experimental Medicine, University of Perugia, Via del Giochetto, 06122 Perugia, Italy
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Antognelli C, Romani R, Baldracchini F, De Santis A, Andreani G, Talesa V. Different activity of glyoxalase system enzymes in specimens of Sparus auratus exposed to sublethal copper concentrations. Chem Biol Interact 2003; 142:297-305. [PMID: 12453667 DOI: 10.1016/s0009-2797(02)00124-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The present study regards possible changes in the activity of glyoxalase system enzymes (glyoxalase I, GI, and glyoxalase II, GII) in tissues (brain, liver and white muscle) of the mediterranean bony fish Sparus auratus after a 20 days exposure to sublethal concentrations (0.1 or 0.5 ppm) of Cu in the marine water and on control untreated animals. The experiments also included measurements of copper concentration in the tissues, as well as of lactate dehydrogenase (LDH) activity, to evaluate possible Cu accumulation and changes in glycolytic activity respectively. Cu accumulation only occurs in the liver. GI, GII and LDH activities kept unchanged in the brain after copper exposure. GI activity in liver and muscle of copper-exposed animals decreases probably for a slackening in the glycolytic rate, as suggested by the lowering of LDH activity. GII activity remains unchanged or increases (liver extract, 0.5 ppm of Cu), maybe to safeguard enough cellular levels of GSH.
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Affiliation(s)
- Cinzia Antognelli
- Department of Experimental Medicine, Division of Cellular and Molecular Biology, University of Perugia, Via del Giochetto, 06122 Perugia, Italy
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