Sex related differences in acetaminophen toxicity in the mouse

Area of Science:

• Pharmacology and Toxicology
• Biochemistry

Background:

• Acetaminophen is a widely used analgesic and antipyretic.
• Understanding acetaminophen toxicity is crucial for safe drug use.
• Sex-based differences in drug metabolism and toxicity are increasingly recognized.

Purpose of the Study:

• To investigate sex-related differences in acetaminophen toxicity in mice.
• To evaluate the protective effect of L-cysteine against acetaminophen-induced toxicity.

Main Methods:

• Determining the lethal dose 50 (LD50) of acetaminophen in male and female mice.
• Measuring serum levels of glutamic oxaloacetic transaminase (SGOT) and glutamic pyruvic transaminase (SGPT) as indicators of liver damage.
• Assessing the impact of L-cysteine administration on acetaminophen toxicity.

Main Results:

• The LD50 of acetaminophen was found to be two-fold lower in female mice compared to male mice.
• Female mice showed significantly higher elevations in SGOT and SGPT levels after acetaminophen administration.
• L-cysteine administration demonstrated a protective effect against acetaminophen's toxic effects.
• Acetaminophen's lethal effects were confirmed to be sex-related, regardless of administration route (oral or subcutaneous).

Conclusions:

• Acetaminophen exhibits greater toxicity in female mice than in male mice.
• Sex is a significant factor influencing acetaminophen's lethal action.
• L-cysteine may serve as a potential therapeutic agent against acetaminophen overdose.