2020
The effects of nano-sized PbO on biomarkers of membrane disruption and DNA damage in a sub-chronic inhalation study on mice
BLÁHOVÁ, Lucie, Zuzana NOVÁKOVÁ, Zbyněk VEČEŘA, Lucie VRLÍKOVÁ, Bohumil DOČEKAL et. al.Základní údaje
Originální název
The effects of nano-sized PbO on biomarkers of membrane disruption and DNA damage in a sub-chronic inhalation study on mice
Autoři
BLÁHOVÁ, Lucie (203 Česká republika, domácí), Zuzana NOVÁKOVÁ (203 Česká republika, domácí), Zbyněk VEČEŘA (203 Česká republika), Lucie VRLÍKOVÁ (203 Česká republika), Bohumil DOČEKAL (203 Česká republika), Jana DUMKOVÁ (203 Česká republika, domácí), Kamil KRUMAL (203 Česká republika), Pavel MIKUSKA (203 Česká republika), Marcela BUCHTOVÁ (203 Česká republika, domácí), Aleš HAMPL (203 Česká republika, domácí), Klára HILSCHEROVÁ (203 Česká republika, domácí) a Luděk BLÁHA (203 Česká republika, garant, domácí)
Vydání
NANOTOXICOLOGY, ABINGDON, TAYLOR & FRANCIS LTD, 2020, 1743-5390
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
30108 Toxicology
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 5.913
Kód RIV
RIV/00216224:14310/20:00115464
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000496628900001
Klíčová slova anglicky
Oxidative damage; lead; nanoparticle; 8-OHdG; TBARS; 8-isoPGF2(alpha); 8-isoPGE isoprostanes; LC-MS; MS; lipid peroxidation; inhalation
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 13. 2. 2023 17:26, Mgr. Michaela Hylsová, Ph.D.
Anotace
V originále
Although the production of engineered nanoparticles increases our knowledge of toxicity and mechanisms of bioactivity during relevant exposures is lacking. In the present study mice were exposed to PbO nanoparticles (PbONP; 192.5 mu g/m(3); 1.93 x 10(6) particles/cm(3)) for 2, 5 and 13 weeks through continuous inhalation. The analyses addressed Pb and PbONP distribution in organs (lung, liver, kidney, brain) using electrothermal atomic absorption spectrometry and transmission electron microscopy, as well as histopathology and analyses of oxidative stress biomarkers. New LC-MS/MS methods were validated for biomarkers of lipid damage F2-isoprostanes (8-iso-prostaglandins F2-alpha and E-2) and hydroxylated deoxoguanosine (8-OHdG, marker of DNA oxidation). Commonly studied malondialdehyde was also measured as TBARS by HPLC-DAD. The study revealed fast blood transport and distribution of Pb from the lung to the kidney and liver. A different Pb accumulation trend was observed in the brain, suggesting transfer of NP along the nasal nerve to the olfactory bulbs. Long-term inhalation of PbONP caused lipid peroxidation in animal brains (increased levels of TBARS and both isoprostanes). Membrane lipid damage was also detected in the kidney after shorter exposures, but not in the liver or lung. On the contrary, longer exposures to PbONP increased levels of 8-OHdG in the lung and temporarily increased lung weight after 2 and 5 weeks of exposure. The histopathological changes observed mainly in the lung and liver indicated inflammation and general toxicity responses. The present long-term inhalation study indicates risks of PbONP to both human health and the environment.
Návaznosti
EF16_013/0001761, projekt VaV |
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LM2015051, projekt VaV |
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