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Combating Cadmium-Induced Neurotoxicity, Oxidative Stress, and Inflammatory Pathways Using DOPA-31, a
Santhanam Sanjai Dharshan1, S Madesh1, Karthikeyan Ramamurthy1
1Toxicology and Pharmacology Laboratory, Department of Biotechnology, Faculty of Science and Humanities, SRM Institute of Science and Technology, Kattankulatur, Chengalpattu District, Tamil Nadu, India.
Journal of Biochemical and Molecular Toxicology
|April 29, 2026
Summary
Cadmium exposure causes neurodegeneration and behavioral deficits. The novel drug DOPA-31 effectively reversed these effects by reducing oxidative stress and inflammation, showing potential for treating neurodegenerative disorders.
Area of Science:
- Environmental Toxicology
- Neuroscience
- Pharmacology
Background:
- Cadmium (Cd) is an environmental toxin linked to neurodegenerative diseases (NDs) like Alzheimer's and Parkinson's.
- Cd induces neurotoxicity via oxidative stress, calcium imbalance, and neuroinflammation, leading to neuronal death and behavioral impairments.
Purpose of the Study:
- To evaluate the efficacy of a novel intervention, DOPA-31, against Cadmium-induced neurotoxicity.
- To assess DOPA-31's impact on behavior, oxidative stress, inflammation, and neuroprotection.
Main Methods:
- Zebrafish models exposed to Cadmium were treated with varying concentrations of DOPA-31.
- Evaluations included behavioral tests, biochemical assays (antioxidant enzymes, lipid peroxidation, acetylcholinesterase), histopathology, and gene expression analysis (inflammation and neuroprotection markers).
Main Results:
- Cadmium exposure caused significant motor, anxiety, and cognitive deficits, increased oxidative stress, lipid peroxidation, and acetylcholinesterase activity, alongside neuronal damage and amyloid aggregation.
- DOPA-31 (20 µM) significantly improved behavioral outcomes, reduced oxidative stress, and restored antioxidant enzyme activity.
- Molecular analysis revealed DOPA-31 downregulated pro-inflammatory genes and upregulated neuroprotective genes, mitigating Cadmium-induced neurotoxicity.
Conclusions:
- DOPA-31 demonstrates significant neuroprotective effects against Cadmium-induced neurotoxicity in zebrafish.
- The intervention shows potential as a therapeutic candidate for neurodegenerative disorder-like features, warranting further investigation in higher animal models.
