THE RESISTANCE OF PUPS TO LATE CHLOROFORM POISONING IN ITS RELATION TO LIVER GLYCOGEN

Area of Science:

• Toxicology
• Biochemistry
• Hepatology

Background:

• Chloroform administration can cause central lobular liver necrosis.
• Young pups exhibit relative resistance to chloroform-induced liver necrosis compared to adults.
• Liver glycogen levels are known to vary with age and nutritional status.

Purpose of the Study:

• To investigate the role of liver glycogen content in the susceptibility of young pups to chloroform-induced liver necrosis.
• To determine if altering glycogen levels can modify the toxic effects of chloroform on the liver.

Main Methods:

• Induction of liver necrosis in young pups using chloroform.
• Manipulation of glycogen levels through starvation, phlorhizin-induced diabetes, and carbohydrate feeding.
• Quantitative measurement of liver glycogen content.

Main Results:

• Starvation or phlorhizin-induced diabetes in pups prior to chloroform administration facilitated the production of liver necrosis.
• Normal, well-nourished 24-hour-old pups had high liver glycogen content (9.07%).
• Carbohydrate feeding in adult animals reduced their susceptibility to chloroform-induced liver necrosis.

Conclusions:

• High liver glycogen content in young pups contributes to their resistance to chloroform-induced central lobular liver necrosis.
• Modulating liver glycogen levels is a key factor in determining susceptibility to chloroform hepatotoxicity.
• Findings suggest a protective role for glycogen against chloroform-induced liver damage.