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American Journal of Clinical Nutrition, Vol 40, 479-484, Copyright © 1984 by The American Society for Clinical Nutrition, Inc
ORIGINAL RESEARCH COMMUNICATIONS |
H Kiyosawa, C Sugawara, N Sugawara and H Miyake
Three groups of male Japanese rabbits weighing about 2.7 kg each were given experimental diets consisting of high cholesterol food and fluid skim milk, yogurt, or water, and were bled every 4 wk to measure serum lipids. After 12 wk they were killed and concentrations of total cholesterol and atheromatous areas dyed with Oil Red O were determined in the aorta to evaluate the development of atherosclerosis. At 8 and 12 wk, the skim milk group showed significantly lower levels of serum total cholesterol, low-density lipoprotein cholesterol, and triglyceride than the control group. Although no significant difference between the yogurt and control groups in the concentration of serum lipids was observed, total cholesterol concentrations in the aorta were significantly lower in both the skim milk and the yogurt groups than in the control group. The atheromatous areas of the skim milk group (38 +/- 34%) were significantly smaller than those of the control group (75 +/- 25%). Significant difference, however, was not found between the yogurt group (51 +/- 22%) and the control group. Concentrations of total cholesterol in the liver did not differ among the three groups. These results suggest that skim milk may have a preventive effect on the development of atherosclerosis.
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