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Updated: Jul 10, 2026
07:42
Nerve Excitability Assessment in Chemotherapy-induced Neurotoxicity
Published on: April 26, 2012
Arsenic neurotoxicity--a review
A Vahidnia1, G B van der Voet, F A de Wolff
1Department of Clinical Pharmacy and Toxicology, Leiden University Medical Center, Leiden, The Netherlands.
Human & Experimental Toxicology
|November 21, 2007
Summary
Chronic arsenic (As) toxicity is a global health issue, contaminating water and food. Exposure leads to severe health effects, including neurotoxicity, by disrupting cellular enzymes and cytoskeletal proteins.
Area of Science:
- Environmental Health
- Toxicology
- Neuroscience
Background:
- Arsenic (As) is a toxic metalloid with historical uses and widespread environmental release.
- Chronic arsenic toxicity is a significant global health problem, impacting millions worldwide through contaminated drinking water and agricultural products.
- Arsenic contamination in groundwater exceeds the World Health Organization's (WHO) guideline of 10 parts per billion (ppb).
Purpose of the Study:
- To elucidate the mechanisms of arsenic-induced neurotoxicity.
- To understand the long-term health effects of arsenic exposure.
- To investigate the biochemical pathways affected by arsenic in the body.
Main Methods:
- Review of existing literature on arsenic toxicity and health effects.
- Analysis of clinical features and electrophysiological studies in patients with arsenic neuropathy.
- Biochemical examination of arsenic's interaction with enzymes and proteins.
Main Results:
- Arsenic exposure causes severe, variable health effects including cancers and neurological disorders.
- Arsenic neuropathy presents as symmetrical sensorimotor neuropathy with reduced nerve conduction velocity, indicative of axonal degeneration.
- Arsenic inhibits enzyme activity by reacting with thiol groups and causes cytoskeletal protein changes and hyperphosphorylation, leading to neurotoxicity.
Conclusions:
- Arsenic toxicity poses a significant environmental and health risk globally.
- Arsenic-induced neurotoxicity involves enzyme inhibition and disruption of the neuronal cytoskeleton.
- Understanding these mechanisms is crucial for developing strategies to mitigate arsenic's adverse health effects.
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