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Heimstad ES, Nygård T, Moe B, Herzke D. New insights from an eight-year study on per- and polyfluoroalkyl substances in an urban terrestrial ecosystem. Environ Pollut 2024; 347:123735. [PMID: 38458514 DOI: 10.1016/j.envpol.2024.123735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 02/28/2024] [Accepted: 03/05/2024] [Indexed: 03/10/2024]
Abstract
Per- and polyfluoroalkyl substances (PFAS) were analysed in a high number of terrestrial samples of soil, earthworm, bird eggs and liver from red fox and brown rat in an urban area in Norway from 2013 to 2020. PFOS and the long chain PFCAs were the most dominating compounds in all samples, proving their ubiquitous distribution. Other less studied compounds such as 6:2 FTS were first and foremost detected in earthworm. 8:2 FTS was found in many samples of fieldfare egg, sparrowhawk egg and earthworm, where the eggs had highest concentrations. Highest concentrations for both 6:2 FTS and 8:2 FTS were detected at present and former industry areas. FOSA was detected in many samples of the species with highest concentrations in red fox liver and brown rat liver of 3.3 and 5.5 ng/g ww. PFAS concentrations from the urban area were significantly higher than from background areas indicating that some of the species can be suitable as markers for PFAS emissions in an urban environment. Fieldfare eggs had surprisingly high concentrations of PFOS and PFCA concentrations from areas known to be or have been influenced by industry. Biota-soil-accumulation factor and magnification calculations indicate accumulation and magnification potential for several PFAS. Earthworm and fieldfare egg had average concentrations above the Canadian and European thresholds in diet for avian wildlife and predators. For earthworms, 18 % of the samples exceeded the European threshold (33 ng/g ww) of PFOS in prey for predators, and for fieldfare eggs, 35 % of the samples were above the same threshold. None of the soil samples exceeded a proposed PNEC of PFOS for soil living organisms of 373 ng/g dw.
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Affiliation(s)
| | - Torgeir Nygård
- NINA-Norwegian Institute for Nature Research, Trondheim, Norway
| | - Børge Moe
- NINA-Norwegian Institute for Nature Research, Trondheim, Norway
| | - Dorte Herzke
- NILU, The Fram Centre, P. box 6606 Stakkevollan, NO-9296, Tromsø, Norway; NIPH-Norwegian Institute for Public Health, Oslo, Norway
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Mortensen ÅK, Mæhre S, Kristiansen K, Heimstad ES, Gabrielsen GW, Jenssen BM, Sylte I. Homology modeling to screen for potential binding of contaminants to thyroid hormone receptor and transthyretin in glaucous gull (Larus hyperboreus) and herring gull (Larus argentatus). ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.comtox.2020.100120] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Hansen MD, Nøst TH, Heimstad ES, Evenset A, Dudarev AA, Rautio A, Myllynen P, Dushkina EV, Jagodic M, Christensen GN, Anda EE, Brustad M, Sandanger TM. The Impact of a Nickel-Copper Smelter on Concentrations of Toxic Elements in Local Wild Food from the Norwegian, Finnish, and Russian Border Regions. Int J Environ Res Public Health 2017; 14:E694. [PMID: 28657608 PMCID: PMC5551132 DOI: 10.3390/ijerph14070694] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 06/22/2017] [Accepted: 06/23/2017] [Indexed: 12/03/2022]
Abstract
Toxic elements emitted from the Pechenganickel complex on the Kola Peninsula have caused concern about potential effects on local wild food in the border regions between Norway, Finland and Russia. The aim of this study was to assess Ni, Cu, Co, As, Pb, Cd, and Hg concentrations in local wild foods from these border regions. During 2013-2014, we collected samples of different berry, mushroom, fish, and game species from sites at varying distances from the Ni-Cu smelter in all three border regions. Our results indicate that the Ni-Cu smelter is the main source of Ni, Co, and As in local wild foods, whereas the sources of Pb and Cd are more complex. We observed no consistent trends for Cu, one of the main toxic elements emitted by the Ni-Cu smelter; nor did we find any trend for Hg in wild food. Concentrations of all investigated toxic elements were highest in mushrooms, except for Hg, which was highest in fish. EU maximum levels of Pb, Cd, and Hg were exceeded in some samples, but most had levels considered safe for human consumption. No international thresholds exist for the other elements under study.
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Affiliation(s)
- Martine D Hansen
- Department of Community Medicine, Faculty of Health Sciences, UiT-The Arctic University of Norway, NO-9037 Tromsø, Norway.
| | - Therese H Nøst
- Department of Community Medicine, Faculty of Health Sciences, UiT-The Arctic University of Norway, NO-9037 Tromsø, Norway.
- NILU-Norwegian Institute for Air Research, The Fram Centre, NO-9296 Tromsø, Norway.
| | - Eldbjørg S Heimstad
- NILU-Norwegian Institute for Air Research, The Fram Centre, NO-9296 Tromsø, Norway.
| | - Anita Evenset
- Akvaplan-niva, The Fram Centre, NO-9296 Tromsø, Norway.
- Faculty of Biosciences, Fisheries and Economics, UiT-The Arctic University of Norway, NO-9037 Tromsø, Norway.
| | - Alexey A Dudarev
- Hygiene Department, Northwest Public Health Research Centre (NWPHRC), St. Petersburg 191036, Russia.
| | - Arja Rautio
- Arctic Health, Faculty of Medicine and Thule Institute, University of Oulu, FI-90014 Oulu, Finland.
| | - Päivi Myllynen
- Northern Laboratory Centre NordLab, FI-90220 Oulu, Finland.
| | - Eugenia V Dushkina
- Hygiene Department, Northwest Public Health Research Centre (NWPHRC), St. Petersburg 191036, Russia.
| | - Marta Jagodic
- Department of Environmental Sciences, Jožef Stefan Institute, 1000 Ljubljana, Slovenia.
| | | | - Erik E Anda
- Department of Community Medicine, Faculty of Health Sciences, UiT-The Arctic University of Norway, NO-9037 Tromsø, Norway.
| | - Magritt Brustad
- Department of Community Medicine, Faculty of Health Sciences, UiT-The Arctic University of Norway, NO-9037 Tromsø, Norway.
| | - Torkjel M Sandanger
- Department of Community Medicine, Faculty of Health Sciences, UiT-The Arctic University of Norway, NO-9037 Tromsø, Norway.
- NILU-Norwegian Institute for Air Research, The Fram Centre, NO-9296 Tromsø, Norway.
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Carlsson P, Crosse JD, Halsall C, Evenset A, Heimstad ES, Harju M. Perfluoroalkylated substances (PFASs) and legacy persistent organic pollutants (POPs) in halibut and shrimp from coastal areas in the far north of Norway: Small survey of important dietary foodstuffs for coastal communities. Mar Pollut Bull 2016; 105:81-87. [PMID: 26948293 DOI: 10.1016/j.marpolbul.2016.02.053] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 02/12/2016] [Accepted: 02/19/2016] [Indexed: 06/05/2023]
Abstract
Halibut (Hippoglossus hippoglossus) and shrimps (Pandalus borealis) are regular foodstuffs for communities in northern Norway and important species for the coastal fishing industry. This is the first study to present a comprehensive overview of the contaminant status of these species, with emphasis on unregulated perfluoroalkylated substances (PFAS). The contaminant concentrations were low and within tolerable levels for human dietary exposure. Median Σpolychlorinated biphenyls (PCB) were 4.9 and 2.5ng/g ww for halibut and unpeeled shrimps, respectively. Concentrations of perfluorooctane sulfonate (PFOS) - the most abundant PFASs - were 0.9 and 2.7ng/g ww in halibut and shrimp, respectively. The halibut fillets were dominated by PCBs, which contributed to 50% of the total POPs load, followed by ΣDDTs; 26% and PFASs (18%), whereas shrimps were dominated by PFASs (74%). ΣPBDEs (polybrominated diphenyl ethers) contributed to 1-4% of the total POP load. Local sources are not contributing significantly to the contaminant burden in these species.
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Affiliation(s)
- Pernilla Carlsson
- Arctic Monitoring and Assessment Programme (AMAP), NO-0134, Oslo, Norway; Akvaplan-niva, NO-9171 Longyearbyen, Svalbard, Norway; Research Centre for Toxic Compounds in the Environment (RECETOX), Masaryk University, CZ-625 00 Brno, Czech Republic.
| | - John D Crosse
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom
| | - Crispin Halsall
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom
| | - Anita Evenset
- Akvaplan-niva, The Fram Centre, NO-9296 Tromsø, Norway
| | - Eldbjørg S Heimstad
- NILU-Norwegian Institute for Air Research, The Fram Centre, NO-9296 Tromsø, Norway
| | - Mikael Harju
- NILU-Norwegian Institute for Air Research, The Fram Centre, NO-9296 Tromsø, Norway
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Dusinska M, Boland S, Saunders M, Juillerat-Jeanneret L, Tran L, Pojana G, Marcomini A, Volkovova K, Tulinska J, Knudsen LE, Gombau L, Whelan M, Collins AR, Marano F, Housiadas C, Bilanicova D, Halamoda Kenzaoui B, Correia Carreira S, Magdolenova Z, Fjellsbø LM, Huk A, Handy R, Walker L, Barancokova M, Bartonova A, Burello E, Castell J, Cowie H, Drlickova M, Guadagnini R, Harris G, Harju M, Heimstad ES, Hurbankova M, Kazimirova A, Kovacikova Z, Kuricova M, Liskova A, Milcamps A, Neubauerova E, Palosaari T, Papazafiri P, Pilou M, Poulsen MS, Ross B, Runden-Pran E, Sebekova K, Staruchova M, Vallotto D, Worth A. Towards an alternative testing strategy for nanomaterials used in nanomedicine: lessons from NanoTEST. Nanotoxicology 2016; 9 Suppl 1:118-32. [PMID: 25923349 DOI: 10.3109/17435390.2014.991431] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
In spite of recent advances in describing the health outcomes of exposure to nanoparticles (NPs), it still remains unclear how exactly NPs interact with their cellular targets. Size, surface, mass, geometry, and composition may all play a beneficial role as well as causing toxicity. Concerns of scientists, politicians and the public about potential health hazards associated with NPs need to be answered. With the variety of exposure routes available, there is potential for NPs to reach every organ in the body but we know little about the impact this might have. The main objective of the FP7 NanoTEST project ( www.nanotest-fp7.eu ) was a better understanding of mechanisms of interactions of NPs employed in nanomedicine with cells, tissues and organs and to address critical issues relating to toxicity testing especially with respect to alternatives to tests on animals. Here we describe an approach towards alternative testing strategies for hazard and risk assessment of nanomaterials, highlighting the adaptation of standard methods demanded by the special physicochemical features of nanomaterials and bioavailability studies. The work has assessed a broad range of toxicity tests, cell models and NP types and concentrations taking into account the inherent impact of NP properties and the effects of changes in experimental conditions using well-characterized NPs. The results of the studies have been used to generate recommendations for a suitable and robust testing strategy which can be applied to new medical NPs as they are developed.
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Affiliation(s)
- M Dusinska
- Health Effects Laboratory-MILK, NILU - Norwegian Institute for Air Research , Kjeller , Norway
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6
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Ruus A, Øverjordet IB, Braaten HFV, Evenset A, Christensen G, Heimstad ES, Gabrielsen GW, Borgå K. Methylmercury biomagnification in an Arctic pelagic food web. Environ Toxicol Chem 2015; 34:2636-2643. [PMID: 26274519 DOI: 10.1002/etc.3143] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 04/02/2015] [Accepted: 06/25/2015] [Indexed: 06/04/2023]
Abstract
Mercury (Hg) is a toxic element that enters the biosphere from natural and anthropogenic sources, and emitted gaseous Hg enters the Arctic from lower latitudes by long-range transport. In aquatic systems, anoxic conditions favor the bacterial transformation of inorganic Hg to methylmercury (MeHg), which has a greater potential for bioaccumulation than inorganic Hg and is the most toxic form of Hg. The main objective of the present study was to quantify the biomagnification of MeHg in a marine pelagic food web, comprising species of zooplankton, fish, and seabirds, from the Kongsfjorden system (Svalbard, Norway), by use of trophic magnification factors. As expected, tissue concentrations of MeHg increased with increasing trophic level in the food web, though at greater rates than observed in several earlier studies, especially at lower latitudes. There was strong correlation between MeHg and total Hg concentrations through the food web as a whole. The concentration of MeHg in kittiwake decreased from May to October, contributing to seasonal differences in trophic magnification factors. The ecology and physiology of the species comprising the food web in question may have a large influence on the magnitude of the biomagnification. A significant linear relationship was also observed between concentrations of selenium and total Hg in birds but not in zooplankton, suggesting the importance of selenium in Hg detoxification for individuals with high Hg concentrations.
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Affiliation(s)
- Anders Ruus
- Norwegian Institute for Water Research, Oslo, Norway
| | - Ida B Øverjordet
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway
- SINTEF Materials and Chemistry, Marine Environmental Technology, Trondheim, Norway
| | | | - Anita Evenset
- Akvaplan-niva, Fram Centre, Tromsø, Norway
- University of Tromsø, The Arctic University of Norway, Tromsø, Norway
| | | | | | | | - Katrine Borgå
- Norwegian Institute for Water Research, Oslo, Norway
- Department of Biosciences, University of Oslo, Oslo, Norway
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Bytingsvik J, Frantzen M, Götsch A, Heimstad ES, Christensen G, Evenset A. Current status, between-year comparisons and maternal transfer of organohalogenated compounds (OHCs) in Arctic char (Salvelinus alpinus) from Bjørnøya, Svalbard (Norway). Sci Total Environ 2015; 521-522:421-430. [PMID: 25864154 DOI: 10.1016/j.scitotenv.2015.03.104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 03/22/2015] [Accepted: 03/23/2015] [Indexed: 06/04/2023]
Abstract
High levels of organohalogenated compounds (OHCs) have been found in Arctic char from Lake Ellasjøen at Bjørnøya (Svalbard, Norway) compared to char from other arctic lakes. The first aim of the study was to investigate the OHC status, contaminant profile, and partitioning of OHCs between muscle and ovary tissue in spawning female char from the high-polluted Lake Ellasjøen and the low-polluted Lake Laksvatn. The second aim was to investigate if OHC levels in muscle tissue have changed over time. Between-lake comparisons show that the muscle levels (lipid weight) of hexachlorobenzene (HCB), chlordanes (∑CHLs), mirex, dichlorodiphenyltrichloroethanes (∑DDTs) and polychlorinated biphenyls (∑PCBs) were up to 36 times higher in char from Ellasjøen than in Laksvatn, and confirm that the char from Ellasjøen are still heavily exposed compared to char from neighboring lake. A higher proportion of persistent OHCs were found in Ellasjøen compared to Laksvatn, while the proportion of the less persistent OHCs was highest in Laksvatn. A between-year comparison of OHC levels (i.e., HCB, DDTs, PCBs) in female and male char shows higher levels of HCB in female char from Ellasjøen in 2009/2012 compared to in 1999/2001. No other between-year differences in OHC levels were found. Due to small study groups, findings associated with between-year differences in OHC levels should be interpreted with caution. OHCs accumulate in the lipid rich ovaries of spawning females, resulting in up to six times higher levels of OHCs in ovaries compared to in muscle (wet weight). The toxic equivalent (TEQ)-value for the dioxin-like PCBs (PCB-105 and -118) in ovaries of the Ellasjøen char exceeded levels associated with increased egg mortality in rainbow trout (Oncorhynchus mykiss). Hence, we suggest that future studies should focus on the reproductive health and performance abilities of the high-exposed population of char inhabiting Lake Ellasjøen.
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Affiliation(s)
- J Bytingsvik
- Akvaplan-niva AS, The Fram Centre, N-9296 Tromsø Norway.
| | - M Frantzen
- Akvaplan-niva AS, The Fram Centre, N-9296 Tromsø Norway
| | - A Götsch
- NILU (Norwegian Institute for Air Research), The Fram Centre, N-9296 Tromsø Norway
| | - E S Heimstad
- NILU (Norwegian Institute for Air Research), The Fram Centre, N-9296 Tromsø Norway
| | - G Christensen
- Akvaplan-niva AS, The Fram Centre, N-9296 Tromsø Norway
| | - A Evenset
- Akvaplan-niva AS, The Fram Centre, N-9296 Tromsø Norway; University of Tromsø, The Arctic University of Norway, Pb 6050 Langnes, N-9037 Tromsø, Norway
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Eggen T, Heimstad ES, Stuanes AO, Norli HR. Uptake and translocation of organophosphates and other emerging contaminants in food and forage crops. Environ Sci Pollut Res Int 2013; 20:4520-31. [PMID: 23250727 PMCID: PMC3695667 DOI: 10.1007/s11356-012-1363-5] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2012] [Accepted: 11/22/2012] [Indexed: 04/15/2023]
Abstract
Emerging contaminants in wastewater and sewage sludge spread on agricultural soil can be transferred to the human food web directly by uptake into food crops or indirectly following uptake into forage crops. This study determined uptake and translocation of the organophosphates tris(1-chloro-2-propyl) phosphate (TCPP) (log Kow 2.59), triethyl-chloro-phosphate (TCEP) (log Kow 1.44), tributyl phosphate (TBP) (log Kow 4.0), the insect repellent N,N-diethyl toluamide (DEET) (log Kow 2.18) and the plasticiser N-butyl benzenesulfonamide (NBBS) (log Kow 2.31) in barley, wheat, oilseed rape, meadow fescue and four cultivars of carrot. All species were grown in pots of agricultural soil, freshly amended contaminants in the range of 0.6-1.0 mg/kg dry weight, in the greenhouse. The bioconcentration factors for root (RCF), leaf (LCF) and seed (SCF) were calculated as plant concentration in root, leaf or seed over measured initial soil concentration, both in dry weight. The chlorinated flame retardants (TCEP and TCPP) displayed the highest bioconcentration factors for leaf and seed but did not show the same pattern for all crop species tested. For TCEP, which has been phased out due to toxicity but is still found in sewage sludge and wastewater, LCF was 3.9 in meadow fescue and 42.3 in carrot. For TCPP, which has replaced TCEP in many products and also occurs in higher residual levels in sewage sludge and wastewater, LCF was high for meadow fescue and carrot (25.9 and 17.5, respectively). For the four cultivars of carrot tested, the RCF range for TCPP and TCEP was 10-20 and 1.7-4.6, respectively. TCPP was detected in all three types of seeds tested (SCF, 0.015-0.110). Despite that DEET and NBBS have log Kow in same range as TCPP and TCEP, generally lower bioconcentration factors were measured. Based on the high translocation of TCPP and TCEP to leaves, especially TCPP, into meadow fescue (a forage crop for livestock animals), ongoing risk assessments should be conducted to investigate the potential effects of these compounds in the food web.
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Affiliation(s)
- Trine Eggen
- Bioforsk, Norwegian Institute for Agricultural and Environmental Research, Postveien 213, 4353 Klepp St., Norway.
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Nøst TH, Helgason LB, Harju M, Heimstad ES, Gabrielsen GW, Jenssen BM. Halogenated organic contaminants and their correlations with circulating thyroid hormones in developing Arctic seabirds. Sci Total Environ 2012; 414:248-256. [PMID: 22154184 DOI: 10.1016/j.scitotenv.2011.11.051] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2011] [Revised: 11/16/2011] [Accepted: 11/17/2011] [Indexed: 05/31/2023]
Abstract
Thyroid hormones are essential for normal growth and development and disruption of thyroid homeostasis can be critical to young developing individuals. The aim of the present study was to assess plasma concentrations of halogenated organic contaminants (HOCs) in chicks of two seabird species and to investigate possible correlations of HOCs with circulating thyroid hormone (TH) concentrations. Plasma from black-legged kittiwake (Rissa tridactyla) and northern fulmar (Fulmarus glacialis) chicks were sampled in Kongsfjorden, Svalbard in 2006. The samples were analyzed for thyroid hormones and a wide range of HOCs (polychlorinated biphenyls (PCBs), hydroxylated (OH-) and methylsulphoned (MeSO-) PCB metabolites, organochlorine pesticides (OCPs), brominated flame retardants (BFRs), and perfluorinated compounds (PFCs)). Concentrations of HOCs were generally low in kittiwake and fulmar chicks compared to previous reports. HOC concentrations were five times higher in fulmar chicks compared to in kittiwake chicks. PFCs dominated the summed HOCs concentrations in both species (77% in kittiwakes and 69% in fulmars). Positive associations between total thyroxin (TT4) and PFCs (PFHpS, PFOS, PFNA) were found in both species. Although correlations do not implicate causal relationships per se, the correlations are of concern as disruption of TH homeostasis may cause developmental effects in young birds.
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Affiliation(s)
- Therese Haugdahl Nøst
- Department of Biology, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway.
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Hallanger IG, Ruus A, Herzke D, Warner NA, Evenset A, Heimstad ES, Gabrielsen GW, Borgå K. Influence of season, location, and feeding strategy on bioaccumulation of halogenated organic contaminants in Arctic marine zooplankton. Environ Toxicol Chem 2011; 30:77-87. [PMID: 20853452 DOI: 10.1002/etc.362] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The influence of season, location, feeding strategy, and trophic position on concentration, compositional pattern, and bioaccumulation factors (BAFs) of halogenated organic contaminants (HOCs; polychlorinated biphenyls, chlorinated pesticides, and brominated flame retardants) was investigated within an Arctic zooplankton food web. Water (dissolved fraction) and seven Arctic marine pelagic zooplankton species (including herbivores, omnivores, and predators) were sampled in May, July, and October 2007 at two stations in Kongsfjorden, Svalbard, Norway. The HOC concentrations in both water and zooplankton generally decreased from May to October. The HOC concentrations and patterns among zooplankton species were explained by their feeding strategies, roughly categorized as herbivores, omnivores, and predators, and not stable isotope-derived trophic position. Field-derived BAFs varied greatly, with higher BAFs in May compared with July and October. Furthermore, BAFs differed among the species according to their feeding strategies. The relationship between BAFs from the different seasons and K(OW) (octanol:water partitioning coefficient) showed comparable intercepts and different slopes between May and October, with all relationships diverging from the assumed 1:1 relationship between BAF and K(OW). Differences in HOC concentrations and BAFs from herbivores to predators showed that biomagnification occurred in zooplankton. The results suggest that concentrations and patterns of HOCs in zooplankton species are influenced not only by equilibrium partitioning with water but also by feeding strategy.
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Zhang X, Brown TN, Wania F, Heimstad ES, Goss KU. Assessment of chemical screening outcomes based on different partitioning property estimation methods. Environ Int 2010; 36:514-20. [PMID: 20451252 DOI: 10.1016/j.envint.2010.03.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2010] [Revised: 03/19/2010] [Accepted: 03/25/2010] [Indexed: 05/09/2023]
Abstract
Screening is widely used to prioritize chemicals according to their potential environmental hazard, as expressed in the attributes of persistence, bioaccumulation (B), toxicity and long range transport potential (LRTP). Many screening approaches for B and LRTP rely on the categorization of chemicals based on a comparison of their equilibrium partition coefficients between octanol and water (K(OW)), air and water (K(AW)) and octanol and air (K(OA)) with a threshold value. As experimental values of the properties are mostly unavailable for the large number of chemicals being screened, the use of quantitative structure-property relationships (QSPRs) and other computational chemistry methods becomes indispensable. Predictions by different methods often deviate considerably, and flawed predictions may lead to false positive/negative categorizations. We predicted the partitioning properties of 529 chemicals, culled from previous prioritization efforts, using the four prediction methods EPI Suite, SPARC, COSMOtherm, and ABSOLV. The four sets of predictions were used to screen the chemicals against various LRTP and B criteria. Screening results based on the four methods were consistent for only approximately 70% of the chemicals. To further assess whether the means of estimating environmental phase partitioning has an impact, a subset of 110 chemicals was screened for elevated arctic contamination potential based on single-parameter and poly-parameter linear free energy relationships respectively. Different categorizations were observed for 5 out of 110 chemicals. Screening and categorization methods that rely on a decision whether a chemical's predicted property falls on either side of a threshold are likely to lead to a significant number of false positive/negative outcomes. We therefore suggest that screening should rather be based on numerical hazard or risk estimates that acknowledge and explicitly take into account the uncertainties of predicted properties.
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Affiliation(s)
- Xianming Zhang
- Department of Chemistry, University of Toronto Scarborough, Toronto, Ontario, Canada
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12
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Helgason LB, Arukwe A, Gabrielsen GW, Harju M, Hegseth MN, Heimstad ES, Jørgensen EH, Mortensen AS, Wolkers J. Biotransformation of PCBs in Arctic seabirds: characterization of phase I and II pathways at transcriptional, translational and activity levels. Comp Biochem Physiol C Toxicol Pharmacol 2010; 152:34-41. [PMID: 20176133 DOI: 10.1016/j.cbpc.2010.02.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2009] [Revised: 02/17/2010] [Accepted: 02/17/2010] [Indexed: 11/26/2022]
Abstract
Arctic seabirds are exposed to a wide range of halogenated organic contaminants (HOCs). Exposure occurs mainly through food intake, and many pollutants accumulate in lipid-rich tissues. Little is known about how HOCs are biotransformed in arctic seabirds. In this study, we characterized biotransformation enzymes in chicks of northern fulmars (Fulmarus glacialis) and black-legged kittiwakes (Rissa tridactyla) from Kongsfjorden (Svalbard, Norway). Phase I and II enzymes were analyzed at the transcriptional, translational and activity levels. For gene expression patterns, quantitative polymerase chain reactions (qPCR), using gene-sequence primers, were performed. Protein levels were analyzed using immunochemical assays of western blot with commercially available antibodies. Liver samples were analyzed for phase I and II enzyme activities using a variety of substrates including ethoxyresorufin (cytochrome (CYP)1A1/1A2), pentoxyresorufin (CYP2B), methoxyresorufin (CYP1A), benzyloxyresorufin (CYP3A), testosterone (CYP3A/CYP2B), 1-chloro-2,4-nitrobenzene (CDNB) (glutathione S-transferase (GST)) and 4-nitrophenol (uridine diphosphate glucuronyltransferase (UDPGT)). In addition, the hydroxylated (OH-) polychlorinated biphenyls (PCBs) were analyzed in the blood, liver and brain tissue, whereas the methylsulfone (MeSO(2)-) PCBs were analyzed in liver tissue. Results indicated the presence of phase I (CYP1A4/CYP1A5, CYP2B, and CYP3A) and phase II (GST and UDPGT) enzymes at the activity, protein and/or mRNA level in both species. Northern fulmar chicks had higher enzyme activity than black-legged kittiwake chicks. This in combination with the higher SigmaOH-PCB to parent PCB ratios suggests that northern fulmar chicks have a different biotransformation capacity than black-legged kittiwake chicks.
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Dusinska M, Dusinska M, Fjellsbø LM, Magdolenova Z, Rinna A, Runden Pran E, Bartonova A, Heimstad ES, Harju M, Tran L, Ross B, Juillerat L, Halamoda Kenzaui B, Marano F, Boland S, Guadaginini R, Saunders M, Cartwright L, Carreira S, Whelan M, Kelin CH, Worth A, Palosaari T, Burello E, Housiadas C, Pilou M, Volkovova K, Tulinska J, Kazimirova A, Barancokova M, Sebekova K, Hurbankova M, Kovacikova Z, Knudsen L, Poulsen MS, Mose T, Vilà M, Gombau L, Fernandez B, Castell J, Marcomini A, Pojana G, Bilanicova D, Vallotto D. Testing strategies for the safety of nanoparticles used in medical applications. Nanomedicine (Lond) 2009; 4:605-7. [DOI: 10.2217/nnm.09.47] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Maria Dusinska
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - M Dusinska
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - LM Fjellsbø
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - Z Magdolenova
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - A Rinna
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - E Runden Pran
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - A Bartonova
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - ES Heimstad
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - M Harju
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - L Tran
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - B Ross
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - L Juillerat
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - B Halamoda Kenzaui
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - F Marano
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - S Boland
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - R Guadaginini
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - M Saunders
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - L Cartwright
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - S Carreira
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - M Whelan
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - CH Kelin
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - A Worth
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - T Palosaari
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - E Burello
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - C Housiadas
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - M Pilou
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - K Volkovova
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - J Tulinska
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - A Kazimirova
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - M Barancokova
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - K Sebekova
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - M Hurbankova
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - Z Kovacikova
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - L Knudsen
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - MS Poulsen
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - T Mose
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - M Vilà
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - L Gombau
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - B Fernandez
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - J Castell
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - A Marcomini
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - G Pojana
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - D Bilanicova
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
| | - D Vallotto
- Health Effects Group, Norwegian Institute for Air Research (NILU), Centre for Ecology and Economics, POB 100, Instituttvn. 18, N-2027 Kjeller, Norway
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Reth M, Ciric A, Christensen GN, Heimstad ES, Oehme M. Short- and medium-chain chlorinated paraffins in biota from the European Arctic -- differences in homologue group patterns. Sci Total Environ 2006; 367:252-60. [PMID: 16519923 DOI: 10.1016/j.scitotenv.2005.12.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2005] [Revised: 12/14/2005] [Accepted: 12/14/2005] [Indexed: 05/07/2023]
Abstract
Congener and homologue group patterns of chlorinated paraffins (CPs) in biota can be influenced by different processes, but these are not well studied yet. Short- (SCCPs) and medium-chain chlorinated paraffins (MCCPs) were quantified in liver from Arctic char and seabirds (little auk and kittiwake) collected at Bear Island (European Arctic) as well as in cod from Iceland and Norway. CP concentrations were between 5 and 88 ng/g wet weight (ww) for SCCPs and between 5 and 55 ng/g ww for MCCPs with one exception of 370 ng/g measured in a liver sample from little auk. The SCCP homologue group patterns were compared with those of technical mixtures and of SCCPs present in cod liver from the Baltic Sea. The latter showed a more common SCCP homologue distribution (sum of C(11) and C(12)>60%) in contrast to cod liver from the Northwest of Europe, which had a high abundance of C(10) and C(12) congeners. Seabirds from Bear Island contained an equally distributed SCCP homologue group pattern. In Arctic char, the SCCP distribution was closer to technical products, but with a high proportion (average of 18.9%) of C(10) congeners. A comparison of C(10)/C(12) ratios confirmed the higher abundance of C(10) congeners in samples from higher latitudes. For the first time, MCCPs could be detected in Arctic samples. The average proportion of C(14) congeners was 65.8%. The C(14)/C(15) abundance ratio was similar to technical mixtures. High-chlorinated CPs (Cl(>7)) were also detectable. The average chlorine content of the SCCPs was 61.9% (59.0-63.3%), and that of the MCCPs 55.8% (54.5-57.4%).
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Affiliation(s)
- Margot Reth
- Organic Analytical Chemistry, University of Basel, Neuhausstr. 31, 4057 Basel, Switzerland
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15
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Abstract
Theoretical molecular descriptors have been calculated for 36 polychlorinated bornanes, the majority compound class of the insecticide Toxaphene. The results demonstrate that thermodynamic stability by the use of molecular structural energies can be used as a general parameter for persistence. Since these descriptors agree well with polychlorinated bornanes found in the environment, these compounds should be included as important indicator compounds in future trace analytical investigations of polychlorinated bornanes and also within experimental metabolism studies to investigate potential toxic metabolites. Reactivity descriptors such as electronaffinity, hardness, LUMO location and atomic charges may guide to potential chemical reactions like the dechlorination of polychlorinated bornanes in reductive environment. Further it is advised to use these descriptors and other new potential ones in combination with experimental degradation and toxicology studies to explore the relationship between molecular structure and biological effects of chlorobornanes.
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Affiliation(s)
- E S Heimstad
- Norwegian Institute for Air Research, The Polar Environmental Centre, Tromsø.
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16
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Brandsdal BO, Heimstad ES, Sylte I, Smalås AO. Comparative molecular dynamics of mesophilic and psychrophilic protein homologues studied by 1.2 ns simulations. J Biomol Struct Dyn 1999; 17:493-506. [PMID: 10636084 DOI: 10.1080/07391102.1999.10508380] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
It is well established that the dynamic motion of proteins plays an important functional role, and that the adaptation of a protein molecule to its environment requires optimization of internal non-covalent interactions and protein-solvent interactions. Serine proteinases in general, and trypsin in particular has been used as a model system in exploring possible structural features for cold adaptation. In this study, a 500 p.s. and a 1200 p.s. molecular dynamics (MD) simulation at 300 K of both anionic salmon trypsin and cationic bovine trypsin are analyzed in terms of molecular flexibility, internal non-covalent interactions and protein-solvent interactions. The present MD simulations do not indicate any increased flexibility of the cold adapted enzyme on an overall basis. However, the apparent higher flexibility and deformability of the active site of anionic salmon trypsin may lower the activation energy for ligand binding and for catalysis, and might be a reason for the increased binding affinity and catalytic efficiency compared to cationic bovine trypsin.
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Affiliation(s)
- B O Brandsdal
- Department of Chemistry, University of Tromsø, Norway
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17
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Heimstad ES, Hansen LK, Smalås AO. Comparative molecular dynamics simulation studies of salmon and bovine trypsins in aqueous solution. Protein Eng 1995; 8:379-88. [PMID: 7567923 DOI: 10.1093/protein/8.4.379] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The flexibility and conformational behaviour of salmon and bovine trypsins were modelled with a 300 ps molecular dynamics simulation in aqueous solution. Trajectories from both trypsins were analysed to eventually detect differences in mobility that could explain observed variations in stability and activity. The simulations were performed at 300 K with all the acidic groups deprotonated and the basic groups protonated. The radius of gyration, the overall r.m.s. deviation from the starting structure as a function of time, together with the r.m.s. deviation from the starting structures as a function of residue number, demonstrated that the simulations were stable and representative of the X-ray structures of both enzymes. Isotropic Debye-Waller factors were calculated from the fluctuations for main-chain atoms and were in good agreement with experimental values. The overall dynamic properties of the two enzymes were similar. Based on the present 300 ps molecular dynamics simulation, it cannot be concluded that either of the two enzymes is more 'flexible' than the other. However, there are clearly differences in mobility on a more detailed level and for particular regions.
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Affiliation(s)
- E S Heimstad
- Department of Chemistry, University of Tromsø, Norway
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18
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Abstract
The crystal structure of an anionic form of salmon trypsin has been determined at 1.82 A resolution. We report the first structure of a trypsin from a phoikilothermic organism in a detailed comparison to mammalian trypsins in order to look for structural rationalizations for the cold-adaption features of salmon trypsin. This form of salmon trypsin (ST II) comprises 222 residues, and is homologous to bovine trypsin (BT) in about 65% of the primary structure. The tertiary structures are similar, with an overall displacement in main chain atomic positions between salmon trypsin and various crystal structures of bovine trypsin of about 0.8 A. Intramolecular hydrogen bonds and hydrophobic interactions are compared and discussed in order to estimate possible differences in molecular flexibility which might explain the higher catalytic efficiency and lower thermostability of salmon trypsin compared to bovine trypsin. No overall differences in intramolecular interactions are detected between the two structures, but there are differences in certain regions of the structures which may explain some of the observed differences in physical properties. The distribution of charged residues is different in the two trypsins, and the impact this might have on substrate affinity has been discussed.
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Affiliation(s)
- A O Smalås
- Department of Chemistry, University of Tromsø, Norway
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