Pulmonary microbiota disruption by respiratory exposure to carbon quantum dots induces neuronal damages in mice.

Given the fact that carbon quantum dots (CQDs) have been commercially produced in quantities, it is inevitable to make their ways into environment and interact closely with the public. Even though CQDs in the environment have been reported to damage the central nervous system, the underlying mechanisms of neurotoxic effects of CQDs following respiratory exposure is still not clear. Intranasal instilled CQDs, mimicking respiratory exposure, induces neurobehavioral impairments associated with neuronal cell death of ferroptosis and disulfidptosis that is regulated by metabolic reprogramming of glutathione and cysteine pathways in the cortex and hippocampus where CQDs were hardly accumulated.

Putative Adverse Outcome Pathway for Parkinson's Disease-like Symptoms Induced by Silicon Quantum Dots based on / Approaches.

Given the commercial proliferation of silicon quantum dots (SiQDs) and their inevitable environmental dispersal, this study critically examines their biological and public health implications, specifically regarding Parkinson's disease. The study investigated the toxicological impact of SiQDs on the onset and development of PD-like symptoms through the induction of ferroptosis, utilizing both [ ()] and (SH-SY5Y neuroblastoma cell line) models. Our findings demonstrated that SiQDs, characterized by their stable and water-soluble physicochemical properties, tended to accumulate in neuronal tissues.

The discovery of regional neurotoxicity-associated metabolic alterations induced by carbon quantum dots in brain of mice using a spatial metabolomics analysis.

Background: Recently, carbon quantum dots (CQDs) have been widely used in various fields, especially in the diagnosis and therapy of neurological disorders, due to their excellent prospects. However, the associated inevitable exposure of CQDs to the environment and the public could have serious severe consequences limiting their safe application and sustainable development.

Results: In this study, we found that intranasal treatment of 5 mg/kg BW (20 µL/nose of 0.