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Simvastatin Neuroprotective Properties against Methylphenidate-Induced Neurodegeneration: Histological and Behavioral
Mohammad Javad Shahabi1, Abbas Jafarian1, A Wallace Hayes2,3
1Department of Pharmacology and Toxicology, Faculty of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran.
Advanced Biomedical Research
|October 24, 2025
Summary
Simvastatin (SIM) protects against methylphenidate (MPH)-induced behavioral and hippocampal changes in rats. This study shows SIM
Area of Science:
- Neuroscience
- Pharmacology
- Histology
Background:
- Methylphenidate (MPH) can induce behavioral and histological alterations.
- The hippocampus is particularly vulnerable to MPH-induced neurotoxicity.
Purpose of the Study:
- To investigate the neuroprotective effect of simvastatin (SIM) against MPH-induced neurotoxicity.
- To evaluate SIM's impact on behavioral changes and hippocampal histology.
Main Methods:
- Male Wistar rats were administered MPH alone or in combination with varying doses of SIM.
- Behavioral assessments included the Open Field Test (OFT) and Elevated Plus Maze (EPM).
- Histomorphological changes in the hippocampus (DG and CA1 regions) were analyzed.
Main Results:
- MPH induced anxiety, depression, and motor activity disorders, along with significant hippocampal cell damage.
- Simvastatin treatment dose-dependently ameliorated MPH-induced behavioral deficits.
- SIM inhibited MPH-prompted quantitative and qualitative neurodegenerative changes in hippocampal DG and CA1 cells.
Conclusions:
- Simvastatin exhibits significant neuroprotective properties against methylphenidate-induced behavioral and hippocampal damage.
- SIM mitigates MPH-induced anxiety, depression, motor deficits, and hippocampal histopathological alterations.
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