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  • Title: Early lesion development in the aortas of rabbits fed low-fat, cholesterol-free, semipurified casein diet.
    Author: Richardson M, Kurowska EM, Carroll KK.
    Journal: Atherosclerosis; 1994 Jun; 107(2):165-78. PubMed ID: 7526873.
    Abstract:
    The initial endothelial morphological alterations and the development of raised, lipid-containing lesions in rabbit aortas were examined after 1 and 3 months on a casein-enriched, semipurified, cholesterol-free diet. The alterations were compared with those in rabbits fed soy-protein in the place of casein and with age-matched, chow-fed, control animals. Using immunohistochemistry macrophages, T-lymphocytes, and smooth muscle cells were identified in the lesions, and an expression of leukocyte adhesion molecules, VCAM-1, ICAM-1 and, occasionally, E-selectin was seen in sections of the aortas of casein-fed rabbits. The initial alterations in the endothelium appear to include evidence of endothelial injury and white blood cell adhesion. No evidence of extracellular liposome formation was observed. This model of atherogenesis is consistent with endothelial injury being an important component of diet-induced atherogenesis and has similarities to human atherosclerosis.
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