Hepatotoxic effects elicited by n-hexane or n-heptane

Area of Science:

• Toxicology
• Biochemistry
• Pharmacology

Background:

• n-Hexane and n-heptane are common industrial solvents.
• Exposure to solvents can lead to adverse health effects, particularly on the liver.
• Understanding the specific hepatotoxic mechanisms is crucial for risk assessment.

Purpose of the Study:

• To investigate the hepatotoxic effects of n-hexane and n-heptane in albino rats.
• To evaluate biochemical and functional changes in the liver following solvent exposure.
• To determine the time-dependent toxicity of these solvents.

Main Methods:

• Albino rats were administered n-hexane or n-heptane intraperitoneally (1 ml/kg body weight).
• Liver samples were analyzed for protein content, total sulfhydryl content, and lipid peroxidation at 1, 2, 7, and 45 days.
• Drug metabolizing activity and pentobarbitone sleeping time were assessed.
• Hepatic glucose-6-phosphatase activity was measured as a microsomal marker.

Main Results:

• Both n-hexane and n-heptane significantly decreased hepatic protein and total sulfhydryl content.
• A significant increase in lipid peroxidation was observed within 24-48 hours of exposure.
• Drug metabolizing activity was markedly reduced, leading to increased pentobarbitone sleeping time.
• Hepatic glucose-6-phosphatase activity, a key microsomal enzyme, showed a significant decrease.

Conclusions:

• n-Hexane and n-heptane induce significant hepatotoxicity in rats.
• These solvents disrupt hepatic biochemical pathways, indicated by reduced protein, sulfhydryl content, and enzyme activity.
• Increased lipid peroxidation and impaired drug metabolism highlight the oxidative stress and functional deficits caused by exposure.