Toxicological Alterations Induced by Subacute Exposure of Cobalt Oxide Nanoparticles in Aged Rats: Behavioral, Biochemical, Molecular, and Histopathological Evidence.

Currently, evidence has pointed out that metal-based nanomaterials may have potentially harmful outcomes in the development of such diseases related to neurodegenerative disorders, oxidative stress, and inflammation. Among them, cobalt oxide nanoparticles (Co3O4-NPs), nano metal-oxides, are widely used in several areas such as industries and as wastewater treatment. Although Co3O4-NPs have a large scale in biological and industrial applications, there is a growing concern to their toxic effect on human health and the environment due to their reduced size and high reactivity, both chemically and biologically.

Polystyrene nanoplastics exacerbate gentamicin-induced nephrotoxicity in adult rat by activating oxidative stress, inflammation and apoptosis pathways.

Nanoplastics (NPs) and pharmaceutical residues are environmental pollutants that can bioaccumulate in the food chain, thus increasing the risk of harmful effects due to concomitant exposure in both humans and animals. However, the impact of such co-exposure on target tissue toxicity and mechanism remains unclear. In this study, we aimed to investigate the effect of combined exposure to widespread polystyrene NP (Ps-NP) contaminant and a widely used antibiotic, gentamicin (GEN) on nephrotoxicity in adult rat.