Počet záznamů: 1  

Inhaled Cadmium Oxide Nanoparticles: Their in Vivo Fate and Effect on Target Organs

  1. 1.
    0460675 - UZFG-Y 2017 RIV CH eng J - Článek v odborném periodiku
    Dumková, J. - Vrlíková, Lucie - Večeřa, Zbyněk - Putnová, Barbora - Dočekal, Bohumil - Mikuška, Pavel - Fictum, P. - Hampl, A. - Buchtová, Marcela
    Inhaled Cadmium Oxide Nanoparticles: Their in Vivo Fate and Effect on Target Organs.
    International Journal of Molecular Sciences. Roč. 17, č. 6 (2016), s. 874-893. E-ISSN 1422-0067
    Grant CEP: GA ČR(CZ) GAP503/11/2315; GA ČR(CZ) GBP503/12/G147
    Institucionální podpora: RVO:67985904 ; RVO:68081715
    Klíčová slova: nanoparticles * cadmium oxide * electron microscopy
    Kód oboru RIV: EB - Genetika a molekulární biologie; CB - Analytická chemie, separace (UIACH-O)
    Impakt faktor: 3.226, rok: 2016

    The increasing amount of heavy metals used in manufacturing equivalently increases hazards of environmental pollution by industrial products such as cadmium oxide (CdO) nanoparticles. Here, we aimed to unravel the CdO nanoparticle destiny upon their entry into lungs by inhalations, with the main focus on the ultrastructural changes that the nanoparticles may cause to tissues of the primary and secondary target organs. We indeed found the CdO nanoparticles to be transported from the lungs into secondary target organs by blood. In lungs, inhaled CdO nanoparticles caused significant alterations in parenchyma tissue including hyperemia, enlarged pulmonary septa, congested capillaries, alveolar emphysema and small areas of atelectasis. Nanoparticles were observed in the cytoplasm of cells lining bronchioles, in the alveolar spaces as well as inside the membranous pneumocytes and in phagosomes of lung macrophages. Nanoparticles even penetrated through the membrane into some organelles including mitochondria and they also accumulated in the cytoplasmic vesicles. In livers, inhalation caused periportal inflammation and local hepatic necrosis. Only minor changes such as diffusely thickened filtration membrane with intramembranous electron dense deposits were observed in kidney. Taken together, inhaled CdO nanoparticles not only accumulated in lungs but they were also transported to other organs causing serious damage at tissue as well as cellular level.
    Trvalý link: http://hdl.handle.net/11104/0260689