Comparison of the content of cholesterol, lipoproteins and serum proteins in rats, guinea pigs and rats for a atherosclerosis model

The hypercholesteremia parameters under similar experimental conditions against a background of the close initial level of cholesterol were considerably more expressed in rabbits than in guinea pigs. Rabbits showed clear symptoms of experimental atherosclerosis which were absent in guinea pigs. A comparative study of quantitative and composition variations in total proteins of the serum and fraction obtained by acid extraction indicated that the differences in dynamics and degree of cholesterinosis were expressed by features of the serum protein spectrum variation in the investigated kinds of animals. Especially close relation has been observed for the fraction components of acid-extracted proteins. The obtained results permit supposing that some kinds of animals have mechanisms connected with the function of the serum alkaline proteins preventing the development of hypercholesteremia and experimental atherosclerosis.