Emerging prospects and consequences of environmental neurotoxic pollutants in the vertebrate system

Le résumé fourni par la source

Neurotoxic pollutants are increasingly recognized as significant environmental threats, significantly impacting vertebrates’ neurological health. This is particularly due to their detrimental effects on the neurological health of vertebrates. Key contributors include heavy metals such as cadmium, arsenic, mercury, and lead, pesticides such as organophosphates, carbamates, and organochlorines, and various industrial chemicals including polychlorinated biphenyls, polybrominated diphenyl ethers, and dioxins. These substances disrupt normal neurophysiological functions by impairing neurotransmission, generating oxidative stress, provoking neuroinflammation, and initiating neuronal cell death. Such disturbances are linked to cognitive deficits, motor impairments, and abnormal neural development. Chronic exposure even at low concentrations poses serious ecological and health concerns due to the tendency of these toxins to bioaccumulate in organisms and biomagnify through food chains, ultimately threatening biodiversity and ecosystem balance. Recent studies highlight the growing use of molecular biomarkers, neuroimaging techniques, and behavioural assays to detect and assess neurotoxic impacts. Particularly alarming is the evidence that exposure during prenatal and early developmental stages may lead to persistent neurobehavioral disorders. To counteract these risks, current mitigation efforts focus on neuroprotective interventions such as antioxidant therapy and nutritional strategies, as well as on strengthening environmental regulations to reduce pollutant emissions. This review highlights the current knowledge on the mechanisms of neurotoxicity, advances in monitoring approaches, and emerging strategies for risk reduction. A comprehensive understanding of how these pollutants affect vertebrate neurophysiology is essential for shaping effective policies aimed at protecting both wildlife and human populations. Future research must adopt integrative, cross-disciplinary approaches that link toxicology, ecology, and public health to better address the complex challenges posed by environmental neurotoxicants.

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