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Kalisinska E, Lanocha-Arendarczyk N, Podlasinska J. Current and historical nephric and hepatic mercury concentrations in terrestrial mammals in Poland and other European countries. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 775:145808. [PMID: 33621879 DOI: 10.1016/j.scitotenv.2021.145808] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 02/06/2021] [Accepted: 02/07/2021] [Indexed: 06/12/2023]
Abstract
The long-term anthropogenic release of mercury (Hg) into the environment has led to contamination of the biosphere, with all forms of Hg showing toxic effects and the ability to accumulate in organisms. Since the 1970s, efforts have been made in Western Europe to reduce Hg emissions and for the economic use of Hg, leading to a reduction in Hg exposure to humans and entire ecosystems. The purpose of this research was to present the total mercury (THg) burden in three mustelids (the piscivorous Eurasian otter and American mink, and the invertebrativorous European badger) inhabiting north-western Poland (mostly floodplains) and other European countries (literature data). Moreover, we wanted to investigate whether reductions in the environmental Hg burden in Europe have resulted in reductions in liver and kidney levels in wild terrestrial mammals (Eurasian otter, wild boar, red deer, roe deer, cervids, leporids, rodents, and ecotrophic groups: piscivorous mustelids, non-mustelids whose diets include aquatic prey, canids and other carnivores, omnivores, herbivores), between samples collected before and after 2000. We revealed significantly higher nephric THg levels in roadkilled than in trapped American minks. As roadkilled piscivorous mustelids from the same floodplain had similar hepatic and nephric THg concentrations, we suggest that the European research on Hg ecotoxicology should more often use alien American mink instead of the protected Eurasian otter. Badgers inhabiting Polish and other European floodplains bioaccumulated higher amounts of THg than those from other areas, and as such, may be recommended as bioindicator of mercury soil contamination. Our analysis of abundant data on mammalian hepatic and nephric THg concentrations (excluding non-piscivores mustelids) showed that in 12 of 21 cases, Hg concentrations had dropped significantly since 2000. This data signals a reduction in Hg contamination in terrestrial mammals, such as the Eurasian otter, and may be reason for cautious optimism.
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Affiliation(s)
- Elżbieta Kalisinska
- Department of Biology and Medical Parasitology, Pomeranian Medical University in Szczecin, Powstancow Wielkopolskich 72, 70-111 Szczecin, Poland.
| | - Natalia Lanocha-Arendarczyk
- Department of Biology and Medical Parasitology, Pomeranian Medical University in Szczecin, Powstancow Wielkopolskich 72, 70-111 Szczecin, Poland
| | - Joanna Podlasinska
- Department of Environmental Management, West Pomeranian University of Technology, Szczecin, Poland
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Zafalon RVA, Perini MP, Vendramini THA, Pedrinelli V, Rentas MF, Morilha IB, Fiuza Henríquez LB, Conti RMC, Brunetto MA. Vitamin-mineral supplements do not guarantee the minimum recommendations and may imply risks of mercury poisoning in dogs and cats. PLoS One 2021; 16:e0250738. [PMID: 33901261 PMCID: PMC8075222 DOI: 10.1371/journal.pone.0250738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 04/12/2021] [Indexed: 11/18/2022] Open
Abstract
Given the importance of using the vitamin-mineral supplements to guarantee the minimum nutritional recommendations for pets in homemade foods, and hypothesizing that these products may contribute to toxic metals contamination, the present study aimed to determine the concentrations of essential minerals and toxic metals in vitamin-mineral supplements available in the Brazilian market and calculate if the amount recommended by the manufacturer guarantees the minimum recommendations of NRC (2006) and FEDIAF (2020), as well as calculating the amount of toxic metals that animals would consume, according to the amounts recommended by the manufacturer. Seven vitamin-mineral supplements were analyzed. The determination of essential minerals and toxic metals was performed using ICP-OES. Comparisons were made with the minimum recommendations for essential minerals, and with the maximum tolerated levels of toxic metals established by the FDA (2011), descriptively. Most of the vitamin-mineral supplements, in the quantities recommended by the manufacturers, do not guarantee the minimum recommendations of NCR (2006) and FEDIAF (2020) for the following elements: calcium, potassium, magnesium, sodium, phosphorus, selenium, and zinc. Only one supplement had detectable selenium concentrations. Three supplements provided more than 0.02mg of mercury/kg of body weight, the safe upper limit used to establish the maximum tolerated level of this element. It is concluded that most vitamin-mineral supplements do not meet the minimum recommendations for most essential minerals and, if formulated by untrained professionals, even with supplementation, homemade foods may still be nutritionally deficient. Furthermore, some vitamin-mineral supplements analyzed may imply risks of mercury poisoning in pets.
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Affiliation(s)
- Rafael Vessecchi Amorim Zafalon
- Department of Animal Nutrition and Production, Pet Nutrology Research Center (CEPEN-PET), School of Veterinary Medicine and Animal Science, University of Sao Paulo (USP), Pirassununga, Brazil
| | - Mariana Pamplona Perini
- Department of Animal Nutrition and Production, Pet Nutrology Research Center (CEPEN-PET), School of Veterinary Medicine and Animal Science, University of Sao Paulo (USP), Pirassununga, Brazil
| | - Thiago Henrique Annibale Vendramini
- Department of Animal Nutrition and Production, Pet Nutrology Research Center (CEPEN-PET), School of Veterinary Medicine and Animal Science, University of Sao Paulo (USP), Pirassununga, Brazil
| | - Vivian Pedrinelli
- Veterinary Nutrology Service (VNS), Veterinary Teaching Hospital, School of Veterinary Medicine and Animal Science, University of Sao Paulo (USP), São Paulo, Brazil
| | - Mariana Fragoso Rentas
- Department of Animal Nutrition and Production, Pet Nutrology Research Center (CEPEN-PET), School of Veterinary Medicine and Animal Science, University of Sao Paulo (USP), Pirassununga, Brazil
| | - Isabela Benelli Morilha
- Department of Animal Nutrition and Production, Pet Nutrology Research Center (CEPEN-PET), School of Veterinary Medicine and Animal Science, University of Sao Paulo (USP), Pirassununga, Brazil
| | - Lucas Ben Fiuza Henríquez
- Department of Animal Nutrition and Production, Pet Nutrology Research Center (CEPEN-PET), School of Veterinary Medicine and Animal Science, University of Sao Paulo (USP), Pirassununga, Brazil
| | - Renata Maria Consentino Conti
- Department of Animal Nutrition and Production, Pet Nutrology Research Center (CEPEN-PET), School of Veterinary Medicine and Animal Science, University of Sao Paulo (USP), Pirassununga, Brazil
| | - Marcio Antonio Brunetto
- Department of Animal Nutrition and Production, Pet Nutrology Research Center (CEPEN-PET), School of Veterinary Medicine and Animal Science, University of Sao Paulo (USP), Pirassununga, Brazil
- Veterinary Nutrology Service (VNS), Veterinary Teaching Hospital, School of Veterinary Medicine and Animal Science, University of Sao Paulo (USP), São Paulo, Brazil
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Radiographic findings and pathology of a dog with mercury toxicity. FORENSIC IMAGING 2020. [DOI: 10.1016/j.fri.2020.200421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Pamphlett R, Kum Jew S, Doble PA, Bishop DP. Elemental imaging shows mercury in cells of the human lateral and medial geniculate nuclei. PLoS One 2020; 15:e0231870. [PMID: 32320439 PMCID: PMC7176133 DOI: 10.1371/journal.pone.0231870] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 03/26/2020] [Indexed: 01/16/2023] Open
Abstract
OBJECTIVE Interference with the transmission of sensory signals along visual and auditory pathways has been implicated in the pathogenesis of hallucinations. The relay centres for vision (the lateral geniculate nucleus) and hearing (the medial geniculate nucleus) appear to be susceptible to the uptake of circulating mercury. We therefore investigated the distribution of mercury in cells of both these geniculate nuclei. MATERIALS AND METHODS Paraffin-embedded tissue sections containing the lateral geniculate nucleus were obtained from 50 adults (age range 20-104 years) who at autopsy had a variety of clinicopathological conditions, including neurological and psychiatric disorders. The medial geniculate nucleus was present in seven sections. Sections were stained for mercury using autometallography. Laser ablation-inductively coupled plasma-mass spectrometry was used to confirm the presence of mercury. RESULTS Ten people had mercury in cells of the lateral geniculate nucleus, and in the medial geniculate nucleus of three of these. Medical diagnoses in these individuals were: none (3), Parkinson disease (3), and one each of depression, bipolar disorder, multiple sclerosis, and mercury self-injection. Mercury was distributed in different groups of geniculate capillary endothelial cells, neurons, oligodendrocytes, and astrocytes. Mass spectrometry confirmed the presence of mercury. CONCLUSION Mercury is present in different combinations of cell types in the lateral and medial geniculate nuclei in a proportion of people from varied backgrounds. This raises the possibility that mercury-induced impairment of the function of the geniculate nuclei could play a part in the genesis of visual and auditory hallucinations. Although these findings do not provide a direct link between mercury in geniculate cells and hallucinations, they suggest that further investigations into the possibility of toxicant-induced hallucinations are warranted.
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Affiliation(s)
- Roger Pamphlett
- Discipline of Pathology, Brain and Mind Centre, Sydney Medical School, The University of Sydney, Sydney, Australia
- Department of Neuropathology, Royal Prince Alfred Hospital, Sydney, Australia
| | - Stephen Kum Jew
- Discipline of Pathology, Brain and Mind Centre, Sydney Medical School, The University of Sydney, Sydney, Australia
| | - Philip A. Doble
- Elemental Bio-Imaging Facility, School of Mathematical and Physical Sciences, University of Technology Sydney, Sydney, New South Wales, Australia
| | - David P. Bishop
- Elemental Bio-Imaging Facility, School of Mathematical and Physical Sciences, University of Technology Sydney, Sydney, New South Wales, Australia
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Dunham-Cheatham SM, Klingler K, Peacock M, Teglas MB, Gustin MS. What is in commercial cat and dog food? The case for mercury and ingredient testing. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 684:276-280. [PMID: 31153074 DOI: 10.1016/j.scitotenv.2019.05.337] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 05/19/2019] [Accepted: 05/22/2019] [Indexed: 06/09/2023]
Abstract
Commercial pet foods should be safe for long-term feeding. However, recent recalls and lawsuits have eroded public trust in pet food companies and products. Recent studies have identified high concentrations of mercury, a potent neurotoxin, in pet food products. Here we posit that pet food products require independent testing to verify safety and compliance with developed Food and Drug Administration and Association of American Feed Control Officials standards, and initiate a discussion as to why including quantification of mercury and methylmercury, as well as the identification of adulteration, are important to such testing protocols. The outcomes of these discussions will be multi-faceted: initiating the impetus to investigate the quality and label accuracy of pet foods; ensuring product safety; promoting transparency within the pet food industry; informing veterinary practices regarding pet food recommendations; providing data for evidence-based policy and regulatory enforcement; and working toward fulfilling the National Research Council's call for research that identifies levels of contaminants in animal feeds and residues in human foods.
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Affiliation(s)
- Sarrah M Dunham-Cheatham
- Department of Natural Resources and Environmental Science, University of Nevada, Reno, NV 89557, USA.
| | - Kelly Klingler
- Department of Biology, University of Nevada, Reno, NV 89557, USA
| | - Mary Peacock
- Department of Biology, University of Nevada, Reno, NV 89557, USA
| | - Michael B Teglas
- Department of Agriculture, Veterinary and Range Sciences, University of Nevada, Reno, NV 89557, USA
| | - Mae Sexauer Gustin
- Department of Natural Resources and Environmental Science, University of Nevada, Reno, NV 89557, USA.
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Sires RA, Fascetti AJ, Puschner B, Larsen JA. Determination of Total Mercury and Methylmercury Concentrations in Commercial Canine Diets. Top Companion Anim Med 2019; 35:6-10. [PMID: 31122689 DOI: 10.1053/j.tcam.2019.02.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 02/25/2019] [Accepted: 02/25/2019] [Indexed: 11/11/2022]
Abstract
Methylmercury is an organic form of mercury that is well recognized for its bioaccumulation in aquatic species. Consumption of fish contaminated with methylmercury poses a toxicological health risk to both humans and animals. Salmon is an increasingly common ingredient in commercial pet foods because of manufacturers' interest in unconventional protein sources and inclusion of omega-3 polyunsaturated fatty acids. Previous studies have measured total mercury, but not methylmercury, in commercial pet foods. The purpose of this study was to evaluate total mercury and methylmercury concentrations in commercially available salmon-containing and nonsalmon-containing canine diets and to estimate risk of chronic exposure in dogs fed these diets long term. Total mercury was detected in 3 of 24 diets evaluated (12.5%), 2 of which did not contain any ingredients from fish. The single salmon-containing diet that contained total mercury was the lowest of the 3 but was also the only sample positive for methylmercury. None of the 3 mercury-containing diets contained fish oil. Concentrations of total mercury were similar to most data previously reported for pet foods. Using expected calorie intake for dogs of 2 body weights, the mercury concentrations determined in this study were applied to theoretical chronic exposure calculations to assess risk of toxicosis to dogs. Total mercury and methylmercury were uncommonly identified in the commercially available canine diets sampled in this study and were found in concentrations unlikely to pose risk to healthy adult dogs. Common sources of mercury in pet foods remain unknown and are not reliably of seafood origin.
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Affiliation(s)
- Rae A Sires
- Veterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
| | - Andrea J Fascetti
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
| | - Birgit Puschner
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
| | - Jennifer A Larsen
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA 95616, USA.
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Komov VT, Ivanova ES, Gremyachikh VA, Poddubnaya NY. Mercury Content in Organs and Tissues of Indigenous (Vulpes vulpes L.) and Invasive (Nyctereutes procyonoides Gray.) Species of Canids from Areas Near Cherepovets (North-Western Industrial Region, Russia). BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2016; 97:480-485. [PMID: 27437948 DOI: 10.1007/s00128-016-1891-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 07/14/2016] [Indexed: 06/06/2023]
Abstract
Trophic and spatial components of ecological niches of two canids native Vulpes vulpes and introduced Nyctereutes procyonoides are overlapping partially in the studied region. Maximum concentrations of mercury in predatory mammals of Canidae family from surroundings of Cherepovets have been determined in liver and kidneys (over 0.50 mg/kg wet weight), with minimal concentrations in brain (<0.2 mg/kg wet weight). The amount of mercury in the same organs of the red fox and raccoon dog is not significantly different. These levels of mercury content are noticeably higher than those in the predators of Canidae family that inhabit territories of Europe lacking the local sources of mercury. At the same time, absolute values of metal quantity are commensurable with the levels registered in predators from the mercury polluted regions of Spain and Poland.
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Affiliation(s)
- V T Komov
- Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences, Borok, Russia, 152742.
| | - E S Ivanova
- Cherepovets State University, Lunacharskogo, 5, Cherepovets, Russia, 162600
| | - V A Gremyachikh
- Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences, Borok, Russia, 152742
| | - N Y Poddubnaya
- Cherepovets State University, Lunacharskogo, 5, Cherepovets, Russia, 162600
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Kalisinska E, Lanocha-Arendarczyk N, Kosik-Bogacka D, Budis H, Podlasinska J, Popiolek M, Pirog A, Jedrzejewska E. Brains of Native and Alien Mesocarnivores in Biomonitoring of Toxic Metals in Europe. PLoS One 2016; 11:e0159935. [PMID: 27513467 PMCID: PMC4981403 DOI: 10.1371/journal.pone.0159935] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 07/11/2016] [Indexed: 01/28/2023] Open
Abstract
Mercury (Hg), lead (Pb) and cadmium (Cd) are involved in mammalian brain damage. However, little is known about Pb and Cd brain levels in wildlife that reflect the geochemical background. The aims of the study include the estimation of Hg, Pb and Cd concentrations, and the determination of relationships between these elements in the brains of 94 mesocarnivores. Road-killed or hunted animals were obtained from north-western Poland near the Polish-German border. The investigation covered the native Eurasian otter Lutra lutra, badger Meles meles, pine marten Martes martes, beech marten M. foina, European polecat Mustela putorius, red fox Vulpes vulpes, and alien species: feral and ranch American mink Neovison vison, raccoon Procyon lotor and raccoon dog Nyctereutes procyonoides. Depending on the diet and environmental pollution, the carnivore brains accumulated toxic metals in varying amounts. The highest median Hg levels (in mg/kg dry weight, dw) were found in the piscivorous Eurasian otter and feral mink (2.44 and 3.96), Pb in the omnivorous raccoon (0.47), while Cd in minks (~0.06). We indicated that Pb-based ammunition is a significant source of the element in scavengers from hunting area, and we also found a significant correlation between Pb and Cd levels in the fox brain. Finally, this study is the first to suggest background levels for brain Pb and Cd in mesocarnivores (<0.50 and <0.04 mg/kg dw, respectively).
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Affiliation(s)
- Elzbieta Kalisinska
- Department of Biology and Medical Parasitology, Pomeranian Medical University, Szczecin, Poland
| | | | - Danuta Kosik-Bogacka
- Department of Biology and Medical Parasitology, Pomeranian Medical University, Szczecin, Poland
| | - Halina Budis
- Department of Health Education, University of Szczecin, Szczecin, Poland
| | - Joanna Podlasinska
- Department of Environmental Management and Protection, Western Pomeranian University of Technology, Szczecin, Poland
| | - Marcin Popiolek
- Department of Parasitology, Institute of Genetics and Microbiology, University of Wroclaw, Wroclaw, Poland
| | - Agnieszka Pirog
- Department of Invertebrate Systematics and Ecology, Institute of Biology, Wroclaw University of Environmental and Life Sciences, Wroclaw, Poland
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Lanocha N, Kalisinska E, Kosik-Bogacka DI, Budis H, Podlasinska J, Jedrzejewska E. Mercury levels in raccoons (Procyon lotor) from the Warta Mouth National Park, northwestern Poland. Biol Trace Elem Res 2014; 159:152-60. [PMID: 24736978 PMCID: PMC4051998 DOI: 10.1007/s12011-014-9962-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Accepted: 03/30/2014] [Indexed: 11/26/2022]
Abstract
This is the first report on mercury (Hg) levels in the liver, kidney, skeletal muscle, and brain of raccoon in Europe. It studied Hg concentration in 24 raccoons from the Warta Mouth National Park, northwestern Poland by atomic absorption spectroscopy (AAS). The highest total Hg concentrations in the raccoon were found in the liver (maximum, 18.45 mg/kg dry weight), while the lowest in the brain (maximum, 0.49 mg/kg dw). In adult raccoons, Hg concentrations in the liver, kidney, and brain were higher than in immature individuals (p<0.001), while similar in skeletal muscle in both age groups. Our results are consistent with studies by other authors conducted in North America in areas with similar environmental conditions.
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Affiliation(s)
- Natalia Lanocha
- Department of Biology and Medical Parasitology, Pomeranian Medical University, Powstancow Wielkopolskich 72, 70-111 Szczecin, Poland
| | - Elzbieta Kalisinska
- Department of Biology and Medical Parasitology, Pomeranian Medical University, Powstancow Wielkopolskich 72, 70-111 Szczecin, Poland
| | - Danuta I. Kosik-Bogacka
- Department of Biology and Medical Parasitology, Pomeranian Medical University, Powstancow Wielkopolskich 72, 70-111 Szczecin, Poland
| | - Halina Budis
- Department of Biology and Medical Parasitology, Pomeranian Medical University, Powstancow Wielkopolskich 72, 70-111 Szczecin, Poland
- Department of Health Education, University of Szczecin, Piastow 40B, 71-065 Szczecin, Poland
| | - Joanna Podlasinska
- Department of Environmental Management and Protection, Western Pomeranian University of Technology, Słowackiego 17, 71-374 Szczecin, Poland
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Lenox CE, Bauer JE. Potential adverse effects of omega-3 Fatty acids in dogs and cats. J Vet Intern Med 2013; 27:217-26. [PMID: 23323770 DOI: 10.1111/jvim.12033] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 10/09/2012] [Accepted: 11/21/2012] [Indexed: 11/29/2022] Open
Abstract
Fish oil omega-3 fatty acids, mainly eicosapentaenoic acid and docosahexaenoic acid, are used in the management of several diseases in companion animal medicine, many of which are inflammatory in nature. This review describes metabolic differences among omega-3 fatty acids and outlines potential adverse effects that may occur with their supplementation in dogs and cats with a special focus on omega-3 fatty acids from fish oil. Important potential adverse effects of omega-3 fatty acid supplementation include altered platelet function, gastrointestinal adverse effects, detrimental effects on wound healing, lipid peroxidation, potential for nutrient excess and toxin exposure, weight gain, altered immune function, effects on glycemic control and insulin sensitivity, and nutrient-drug interactions.
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Affiliation(s)
- C E Lenox
- Gulf Coast Veterinary Specialists, Houston, TX 77027, USA.
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Schöniger S, Klose K, Werner H, Schwarz BA, Müller T, Schoon HA. Nonsuppurative encephalitis in a dog. Vet Pathol 2012; 49:731-4. [PMID: 22308232 DOI: 10.1177/0300985811432349] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A 4-year-old male German Hunting Terrier presented with tremor, dyspnea, trismus, spasms of the musculature of the larynx and pharynx, and hypothermia and subsequently died despite intensive clinical care. Prior clinical signs included vomitus and diarrhea. Microscopic examination of the brain revealed a multifocal nonsuppurative brain stem encephalitis; a few intralesional neurons contained intranuclear inclusions. By immunohistochemistry, Aujeszky disease virus (Suid herpesvirus 1) antigen was detected in neurons in the brain and in ganglion cells of the trigeminal ganglia. Viral culture of brain tissue confirmed the presence of Aujeszky disease virus. Histopathologic findings in the brain with the identification of Aujeszky disease virus by immunohistochemistry and polymerase chain reaction are consistent with Aujeszky disease virus-induced encephalitis. Sequencing revealed a 100% homology of the isolated Aujeszky disease virus with Aujeszky disease virus isolates of wild boar from Eastern Germany.
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Affiliation(s)
- S Schöniger
- Institute of Pathology, Faculty of Veterinary Medicine, University of Leipzig, An den Tierkliniken 33, 04103 Leipzig, Germany.
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12
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Kalisinska E, Lisowski P, Kosik-Bogacka DI. Red fox Vulpes vulpes (L., 1758) as a bioindicator of mercury contamination in terrestrial ecosystems of north-western Poland. Biol Trace Elem Res 2012; 145:172-80. [PMID: 21892722 PMCID: PMC3272226 DOI: 10.1007/s12011-011-9181-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2011] [Accepted: 08/16/2011] [Indexed: 12/05/2022]
Abstract
In this study, we determined the concentrations of total mercury (Hg) in samples of liver, kidney and skeletal muscle of 27 red foxes Vulpes vulpes (L., 1758) from north-western Poland, and examined the morphometric characteristics of the collected specimens. The analysis also included the relationship between Hg concentration and the fox size, and the suitability of individual organs as bioindicators in indirect evaluation of environmental mercury contamination. Determination of Hg concentration was performed by atomic absorption spectroscopy. In the analysed samples, the Hg concentration was low and the maximum value did not exceed 0.85 mgHg/kg dry weight (dw). There were no significant differences in Hg concentrations in the analysed material between males and females or between immature and adult groups. The median concentrations of Hg in the liver, kidney and skeletal muscle were 0.22, 0.11 and 0.05 mgHg/kg dw, respectively. The correlation coefficients were significant between the concentrations of mercury in the liver, kidney and skeletal muscle (positive) and between the kidney Hg concentration and kidney mass (negative). Taking into account our results and findings of other authors, it may be argued that the red fox exhibits a measurable response to mercury environmental pollution and meets the requirements of a bioindicator.
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Affiliation(s)
- Elzbieta Kalisinska
- Department of Biology and Medical Parasitology, Pomeranian Medical University, Powstancow Wielkopolskich Av. 72, 70-111 Szczecin, Poland
| | - Piotr Lisowski
- Department of Zoology and Agriculture, West Pomeranian University of Technology, Doktora Judyma St. 20, 71-466 Szczecin, Poland
| | - Danuta Izabela Kosik-Bogacka
- Department of Biology and Medical Parasitology, Pomeranian Medical University, Powstancow Wielkopolskich Av. 72, 70-111 Szczecin, Poland
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Hansmann F, Stephan I, Wirtz A, Gruber AD, Wohlsein P. Mercury poisoning in a German shepherd dog. Vet Rec 2009; 165:447-8. [PMID: 19820261 DOI: 10.1136/vr.165.15.447] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- F Hansmann
- Department of Pathology, University of Veterinary Medicine Hannover, Hannover, Germany
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14
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Kalisińska E, Lisowski P, Salicki W, Kucharska T, Kavetska K. Mercury in wild terrestrial carnivorous mammals from north-western Poland and unusual fish diet of red fox. ACTA ACUST UNITED AC 2009. [DOI: 10.4098/j.at.0001-7051.032.2008] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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