Toxicity of rac-1(3)-myristoyl glycerol to mice

Area of Science:

• Biochemistry
• Toxicology
• Nutritional Science

Background:

• Monoacylglycerols are dietary lipids.
• Saturated fatty acids can have toxic effects when incorporated into specific lipid structures.
• Previous studies indicated toxicity of rac-1(3)-palmitoyl glycerol.

Purpose of the Study:

• To investigate the toxicity of rac-1(3)-myristoyl glycerol in mice.
• To determine if safflower oil can reverse the toxic effects.
• To understand the role of ambient temperature and plasma lipid changes.

Main Methods:

• Mice were fed diets containing 30% rac-1(3)-myristoyl glycerol.
• Experimental groups included diets with and without 4% safflower oil.
• Ambient temperature effects were assessed.
• Plasma lipid profiles were analyzed.

Main Results:

• Diets with 30% rac-1(3)-myristoyl glycerol induced hypothermia and mortality.
• Adding 4% safflower oil prevented hypothermia and reduced mortality.
• Toxic effects were temperature-dependent.
• Plasma lipid changes included increased cholesteryl linoleate.

Conclusions:

• Monoacylglycerols of saturated fatty acids exhibit general toxicity.
• Safflower oil effectively reverses this toxicity.
• Cholesteryl linoleate levels may be a key indicator in this toxicological response.