J 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 (203 Česká republika, domácí), Lucie BLÁHOVÁ (203 Česká republika, domácí), Z. VECERA (203 Česká republika), P. MIKUSKA (203 Česká republika), B. DOCEKAL (203 Česká republika), M. BUCHTOVA (203 Česká republika), I. MISEK (203 Česká republika), Jana DUMKOVÁ (203 Česká republika, domácí), Aleš HAMPL (203 Česká republika, domácí) a Klára HILSCHEROVÁ (203 Česká republika, garant, domácí)

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

Kód RIV

RIV/00216224:14310/16:00093483

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000388601400063

Klíčová slova anglicky

Nanoparticle; Cadmium; Accumulation; Tissue damage; Lipid peroxidation; Glutathione; Oxidative stress

Štítky

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

LO1214, projekt VaV
Název: Centrum pro výzkum toxických látek v prostředí (Akronym: RECETOX)
Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Centrum pro výzkum toxických látek v prostředí