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Background: The use of personal electric vehicles in the United States has increased head and neck injuries. This study analyses the types, frequencies, demographics and management of these injuries across motorised vehicles.

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Long-Term Exposure to Tire-Derived 6-PPD Quinone Causes Neurotoxicity and Neuroinflammation via Inhibition of HTR2A in C57BL/6 Mice.

Environ Sci Technol

January 2025

School of Basic Medical Sciences, Shandong Second Medical University, 7166 Baotong West Street, Weicheng District, Weifang, Shandong 261053, China.

-(1,3-dimethylbutyl)-'-phenyl--phenylenediamine quinone (6-PPDQ), a novel contaminant derived from tire wear, has raised concerns due to its potential neurotoxicity, yet its long-term effects on mammalian neurological health remain poorly understood. This study investigates the neurotoxic and neuroinflammatory impacts of prolonged 6-PPDQ exposure using male C57BL/6 mice. Behavioral assessments revealed significant cognitive deficits, while biochemical analyses demonstrated increased levels of reactive oxygen species, apoptosis, and blood-brain barrier (BBB) disruption.

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Background: Ambient air pollution, detrimental built and social environments, social isolation (SI), low socioeconomic status (SES), and rural (versus urban) residence have been associated with cognitive decline and risk of Alzheimer's disease and related dementias (ADRD). Research is needed to investigate the influence of ambient air pollution and built and social environments on SI and cognitive decline among rural, disadvantaged, ethnic minority communities. To address this gap, this cohort study will recruit an ethnoracially diverse, rural Florida sample in geographic proximity to seasonal agricultural burning.

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