Mi Seong Jo

TL;DR: Similar to previously reported graphene inhalation data, this short-term nose-only inhalation study found only minimal or unnoticeable graphene oxide toxicity in the lungs and other organs.

TL;DR: The results of this study indicate that tangled MWCNTs seem to have a relatively shorter retention half-life when compared to previous reports on rigid MWC NTs, and the no-observed adverse effect level (NOAEL) for the tested tangled M WCNTs was 0.257 mg/m3 in a previous rat 28-day subacute inhalation toxicity study.

TL;DR: The results of this study suggest that the subacute inhalation of SiNPs had no toxic effects on the lung of rats at the concentrations and selected time points used in this study.

TL;DR: Differential counting of blood cells and inflammatory biomarkers in BAL fluid and histopathological evaluation of lung tissue indicated that exposure to the high concentrations of AgNP aerosol induced inflammation at PEO-1, slowly resolved at Poe-7 and completely resolved at BAL-7, suggesting that Ag from AgNPs was cleared through two different modes; fast and slow clearance.

TL;DR: AgNPs following acute inhalation by rats are evenly retained in each lung lobe in terms of mass per unit lung tissue weight, contrasting with earlier studies reporting greater apical lobe deposition of inhaled micro-particles in rodents.