2016
Impact of acute and chronic inhalation exposure to CdO nanoparticles on mice
LEBEDOVÁ, Jana; Lucie BLÁHOVÁ; Z. VECERA; P. MIKUSKA; B. DOCEKAL et al.Základní údaje
Originální název
Impact of acute and chronic inhalation exposure to CdO nanoparticles on mice
Autoři
LEBEDOVÁ, Jana; Lucie BLÁHOVÁ; Z. VECERA; P. MIKUSKA; B. DOCEKAL; M. BUCHTOVA; I. MISEK; Jana DUMKOVÁ; Aleš HAMPL a Klára HILSCHEROVÁ
Vydání
Environmental Science and Pollution Research, Landsberg, Germany, Ecomed, 2016, 0944-1344
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
30304 Public and environmental health
Stát vydavatele
Německo
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 2.741
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/16:00093483
Organizační jednotka
Přírodovědecká fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
Nanoparticle; Cadmium; Accumulation; Tissue damage; Lipid peroxidation; Glutathione; Oxidative stress
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 2. 3. 2017 12:25, Mgr. Michaela Hylsová, Ph.D.
Anotace
V originále
Cadmium nanoparticles can represent a risk in both industrial and environmental settings, but there is little knowledge on the impacts of their inhalation, especially concerning longer-term exposures. In this study, mice were exposed to cadmium oxide (CdO) nanoparticles in whole body inhalation chambers for 4 to 72 h in acute and 1 to 13 weeks (24 h/day, 7 days/week) in chronic exposure to investigate the dynamics of nanoparticle uptake and effects. In the acute experiment, mice were exposed to 2.95 x 10(6) particles/cm(3) (31.7 mu g CdO/m(3)). The same concentration and a lower one (1.18 x 10(6) particles/cm(3), 12.7 mu g CdO/m(3)) were used for the chronic exposure. Transmission electron microscopy documented distribution of nanoparticles into all studied organs. Major portion of nanoparticles was retained in the lung, but longer exposure led to a greater relative redistribution into secondary organs, namely the kidney, and also the liver and spleen. Accumulation of Cd in the lung and liver occurred already after 24 h and in the brain, kidney, and spleen after 72 h of exposure, and a further increase of Cd levels was observed throughout the chronic exposure. There were significant differences in both Cd accumulation and effects between the two exposure doses. Lung weight in the higher exposure group increased up to 2-fold compared to the control. Histological analyses showed dose-dependent alterations in lung and liver morphology and damage to their tissue. Modulation of oxidative stress parameters including glutathione levels and increased lipid peroxidation occurred mainly after the greater chronic exposure. The results emphasize risk of longer-term inhalation of cadmium nanoparticles, since adverse effects occurring after shorter exposures gradually progressed with a longer exposure duration.
Návaznosti
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