Short-term toxicity of trans,trans-muconaldehyde

Area of Science:

• Toxicology
• Biochemistry
• Hematology

Background:

• Muconaldehyde is a six-carbon diene dialdehyde.
• Alpha,beta-unsaturated aldehydes can exhibit toxicity.

Purpose of the Study:

• To evaluate the toxicological and biochemical effects of trans,trans-muconaldehyde in male CD-1 mice.
• To determine the median lethal dose (LD50) of trans,trans-muconaldehyde.

Main Methods:

• Administration of trans,trans-muconaldehyde (2 mg/kg, ip) daily for 10 and 16 days.
• Calculation of LD50 using two different methods.
• Monitoring of hematological parameters, bone marrow cellularity, and hepatic sulfhydryl content.

Main Results:

• The LD50 of trans,trans-muconaldehyde was determined to be 6.7 and 7.1 mg/kg body weight.
• Daily administration of 2 mg/kg trans,trans-muconaldehyde led to significant decreases in red blood cell count, hematocrit, hemoglobin, and bone marrow cellularity.
• Hepatic total and free sulfhydryl content decreased, while white blood cell count and spleen weight increased after 16 days.

Conclusions:

• Trans,trans-muconaldehyde is a potent bone marrow toxin in mice.
• The observed toxic effects were dose-dependent and duration-dependent.