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High resolution visualisation of tiemannite microparticles, essential in the detoxification process of mercury in marine mammals.
von Hellfeld, Rebecca; Gade, Christoph; Doeschate, Mariel Ten; Davison, Nicolas J; Brownlow, Andrew; Mbadugha, Lenka; Hastings, Astley; Paton, Graeme.
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  • von Hellfeld R; University of Aberdeen, School of Biological Sciences, 23 St Machar Drive, AB23 8UU, Aberdeen, UK; National Decommissioning Centre (NDC), Main Street, AB41 6AA, Newburgh, UK. Electronic address: rebecca.vonhellfeld@abdn.ac.uk.
  • Gade C; University of Aberdeen, School of Biological Sciences, 23 St Machar Drive, AB23 8UU, Aberdeen, UK; National Decommissioning Centre (NDC), Main Street, AB41 6AA, Newburgh, UK.
  • Doeschate MT; Scottish Marine Animal Stranding Scheme (SMASS), University of Glasgow, School of Biodiversity, One Health & Veterinary Medicine, 464 Bearsden Road, G61 1QH, Glasgow, UK.
  • Davison NJ; Scottish Marine Animal Stranding Scheme (SMASS), University of Glasgow, School of Biodiversity, One Health & Veterinary Medicine, 464 Bearsden Road, G61 1QH, Glasgow, UK.
  • Brownlow A; Scottish Marine Animal Stranding Scheme (SMASS), University of Glasgow, School of Biodiversity, One Health & Veterinary Medicine, 464 Bearsden Road, G61 1QH, Glasgow, UK.
  • Mbadugha L; University of Aberdeen, School of Biological Sciences, 23 St Machar Drive, AB23 8UU, Aberdeen, UK.
  • Hastings A; University of Aberdeen, School of Biological Sciences, 23 St Machar Drive, AB23 8UU, Aberdeen, UK.
  • Paton G; University of Aberdeen, School of Biological Sciences, 23 St Machar Drive, AB23 8UU, Aberdeen, UK.
Environ Pollut ; 342: 123027, 2024 Feb 01.
Article en En | MEDLINE | ID: mdl-38016588
The North Sea is an ecologically rich habitat for marine wildlife which has also been impacted by industrial developments and anthropogenic emissions of contaminants such as mercury. Marine mammals are particularly susceptible to mercury exposure, due to their trophic position, long lifespan, and dependence on (increasingly contaminated) aquatic prey species. To mitigate impact, marine mammals can detoxify methylmercury by binding it to selenium-containing biomolecules, creating insoluble mercury selenide granules. Here, liver, kidney, muscle, and brain samples from an adult male bottlenose dolphin (Tursiops truncatus) with known elevated mercury concentrations were analysed through scanning electron microscopy (SEM). Tiemannite (HgSe) deposits were identified in all organs, ranging from 400 nm to 5 µm in diameter, with particle size being organ-dependent. Although reported in other studies, this is the first time that the three-dimensional nature of tiemannite is captured in marine mammal tissue.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Delfín Mular / Mercurio / Compuestos de Metilmercurio Límite: Animals Idioma: En Revista: Environ Pollut Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Delfín Mular / Mercurio / Compuestos de Metilmercurio Límite: Animals Idioma: En Revista: Environ Pollut Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido