Short-term toxicity study in rats dosed with menthone.

Area of Science:

• Toxicology
• Pharmacology
• Natural Product Chemistry

Background:

• Menthone is a key monoterpene found in peppermint oil.
• Peppermint oil is widely used for its potential health benefits.
• Understanding menthone's toxicological profile is crucial for safety assessments.

Purpose of the Study:

• To evaluate the sub-chronic toxicity of menthone in rats.
• To determine the dose-dependent effects of menthone on biochemical and histopathological parameters.
• To establish the no-effect level (NOEL) for menthone exposure.

Main Methods:

• Oral administration of menthone to male and female rats at doses of 0, 200, 400, and 800 mg/kg body weight for 28 days.
• Plasma analysis for creatinine, alkaline phosphatase, and bilirubin levels.
• Organ weight analysis (liver, spleen) and histopathological examination of cerebellum.

Main Results:

• Dose-dependent decrease in plasma creatinine and increase in alkaline phosphatase and bilirubin.
• Increased relative weights of liver and spleen observed.
• Cerebellar white matter exhibited cyst-like spaces in higher dose groups.

Conclusions:

• Menthone exposure at tested doses induces significant biochemical and histopathological changes in rats.
• The no-effect level for menthone was determined to be lower than 200 mg/kg body weight/day.
• Findings highlight potential neurotoxic and organ-specific effects of menthone.