Trimethyltin-Induced Neurotoxicity in Central Nervous System
Summary
Trimethyltin (TMT) is an organotin compound exhibiting potent neurotoxicity selectively targeting the limbic system, particularly the hippocampus. Animal models of TMT exposure have revealed selective neuronal death of dentate gyrus granule cells and Cornu Ammonis pyramidal neurons, leading to cognitive deficits, seizures and behavioural disturbances. Pathogenesis involves a cascade of molecular events including neuroinflammation, oxidative stress, mitochondrial dysfunction and intracellular calcium overload. Microglial activation and release of pro-inflammatory cytokines exacerbate neuronal injury, while activation of apoptotic pathways through caspase-3 cleavage underlies cell loss. Recent mechanistic studies also demonstrate that autophagic flux is upregulated in the early response to TMT, potentially modulating the balance between survival and apoptosis. TMT models have proven instrumental in elucidating fundamental pathways of neurodegeneration and in assessing the efficacy of neuroprotective agents targeting cholinergic dysfunction, reactive oxygen species scavenging and kinase signalling pathways. Given its reproducibility and pathophysiological parallels with human neurodegenerative disorders, TMT-induced neurotoxicity remains a cornerstone in preclinical research, offering insights into the interplay between environmental toxicants and central nervous system vulnerability on a global scale.
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Trimethyltin-Induced Neurotoxicity in Central Nervous System publication trend
The graph below shows the total number of articles in trimethyltin-induced neurotoxicity in central nervous system across all publications each year (not limited to Nature Index journals).
Technical terms
Neuroinflammation: Inflammatory response within the central nervous system mediated by glial cells.
Oxidative stress: Imbalance between generation of reactive oxygen species and antioxidant defences.
Apoptosis: Programmed cell death involving caspase activation and DNA fragmentation.
Autophagy: Cellular process for degrading and recycling damaged organelles and proteins.
Microglia: Resident immune cells of the central nervous system involved in surveillance and response.
Hippocampus: Brain region essential for learning, memory formation and spatial navigation.
References
- Anti-Amnesia-like Effect of Pinus densiflora Extract by Improving Apoptosis and Neuroinflammation on Trimethyltin-Induced ICR Mice. International Journal of Molecular Sciences (2023).
- Neuroprotective Effect of Protaetia brevitarsis seulensis’ Water Extract on Trimethyltin-Induced Seizures and Hippocampal Neurodegeneration. International Journal of Molecular Sciences (2021).
- Autophagy is Activated In Vivo during Trimethyltin-Induced Apoptotic Neurodegeneration: A Study in the Rat Hippocampus. International Journal of Molecular Sciences (2019).
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