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Journal of Nutrition Vol. 112 No. 9 September 1982, pp. 1805-1808
Copyright © 1982 by American Society for Nutrition
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Effect of Dietary Phospholipids and their Constituent Bases on Serum Lipids and Apolipoproteins in Rats1

Masakazu Murata, Katsumi Imaizumi2 and Michihiro Sugano

Laboratory of Nutrition Chemistry, Department of Food Science and Technology, School of Agriculture, Kyushu University, Fukuoka 812, Japan

To evaluate alterations of serum lipoproteins, liver lipids and fecal sterol excretion caused by feeding a crude soybean phospholipid preparation, the effect of purified phospholipids and phospholipid bases were studied in rats. Soybean phosphatidylcholine preparations showed no effect on serum lipoproteins and liver lipids. Egg yolk phospholipid, which contained phosphatidylethanolamine and phosphatidylcholine, caused a decrease in serum cholesterol and apoprotein A-I and an increase in serum apoprotein B and liver cholesterol. Ethanolamine, but not choline and inositol, showed an effect on serum lipoproteins similar to egg yolk phospholipid. All phospholipids tested increased fecal excretion of neutral sterols. It is suggested that phosphatidylethanolamine exerts marked influence on serum lipoprotein levels.

KEY WORDS: • phosphatidylcholine • phosphatidylethanolamine • ethanolmine • serum apolipoproteins • fecal steroids • serum cholesterol

1 Presented in part at the Meeting of the Agricultural Chemical Society of Japan, Tokyo, April 1–4, 1982. Supported by a Grant in Aid for the Encouragement of a Young Scientist (No. 476062) from the Ministry of Education, Science and Culture, Japan.

2 To whom reprint requests should be sent.

Manuscript received 29 April 1982.




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