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alpha-Tocopherol modulates liver toxicity of the pyrethroid cypermethrin
L Aldana1, V Tsutsumi, A Craigmill
1Departamento de Investigación y Posgrado en Alimentos, Universidad de Sonora. Apdo. Postal 1658, Hermosillo, Sonora, Mexico. laldana@guayacan.uson.mx
Toxicology Letters
|November 10, 2001
Summary
Alpha-tocopherol (alpha-T) mitigates cypermethrin (CYP)-induced liver damage in rats by improving lipid metabolism and reducing cellular injury. This antioxidant shows protective effects against pesticide-induced hepatotoxicity.
Area of Science:
- Toxicology
- Biochemistry
- Pharmacology
Background:
- Cypermethrin (CYP) is a widely used insecticide with known toxic effects.
- Hepatotoxicity is a significant concern associated with pesticide exposure.
- Antioxidants like alpha-tocopherol (alpha-T) are investigated for their protective potential.
Purpose of the Study:
- To analyze the hepatotoxic effects of cypermethrin (CYP) in a rat model.
- To evaluate the protective role of alpha-tocopherol (alpha-T) against CYP-induced liver damage.
Main Methods:
- Male Wistar rats received daily intraperitoneal doses of CYP (300 mg/kg) for 7 days.
- A separate group received alpha-T (100 mg/kg pre-dose, then 40 mg/kg daily) concurrently with CYP.
- Biochemical indicators, histological liver damage, and urinary DCVA levels were assessed.
Main Results:
- CYP significantly altered lipid metabolism, which alpha-T partially inhibited (32%), except for LDL.
- Alpha-T modulated CYP-induced alterations in AST levels by 29%.
- Histological analysis revealed that alpha-T reduced mitochondrial damage and endoplasmic reticulum swelling in liver cells.
Conclusions:
- Alpha-tocopherol (alpha-T) demonstrates a protective effect against cypermethrin (CYP)-induced hepatotoxicity in rats.
- Alpha-T appears to modify CYP metabolism, influencing lipid profiles and mitigating histological liver damage.
- The findings suggest alpha-T's potential as a therapeutic agent against pesticide-induced liver injury.