Effect of Juvenile Environmental Tobacco Smoke Exposure on the Rat Frontal Cortex Neuroproteome

ABSTRACT: Exposure to secondhand tobacco smoke during early childhood has been linked with an increased risk for behavioral disorders, yet little is known regarding how brain development is impacted. Using an environmental tobacco smoke (ETS) passive inhalation model, this study assesses the neurodevelopmental impact of juvenile exposure during a critical period of frontal cortex development, specifically that of the rat orbital neocortex between postnatal days 8 and 22. Agnostic shotgun proteomics was employed to discern the biomolecular shift within this rapidly developing brain region that is responsible for higher-order behavioral control. The orbital cortex neuroproteome was assessed between ETS-exposed and room-air control animals employing a label-free shotgun approach with data-independent acquisition. Following protein roll-up, a total of X protein were found statistically altered in quantity out of Y total proteins identified. These results implicate a prominent shift within metabolic processes and synaptic organization related to excitatory and inhibitory neurotransmission. Findings derived from this dataset may further our understanding of how secondhand smoke exposure can perturb the orbital frontal cortex and result in developmental behavioral disorders.

INSTRUMENT(S): Synapt G2 HDMS

ORGANISM(S): Rattus Norvegicus (rat)

TISSUE(S): Brain

SUBMITTER: Andrew Ottens  

LAB HEAD: Andrew K Ottens

PROVIDER: PXD007690 | Pride | 2020-05-26

REPOSITORIES: Pride