Self-selection of phenylalanine in the rat.
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概要
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The regulation of phenylalanine intake in rats was investigated by means of a self-selection feeding method. The relationship between phenylalanine intake and the alteration of phenylalanine and tyrosine concentrations in plasma and brain was also studied. Weanling rats were offered a choice of two diets differing only in phenylalanine content for 2 weeks. Weight gain and food consumption of all the selfselecting rats were not significantly different from each other and were of the same levels as those in rats fed on a 10% casein or 10% casein plus 1.0% phenylalanine diet as a fixed ratio. Phenylalanine intake of the selfselecting rats ranged from 0.31 to 2.29% of the food consumed. The phenylalanine and tyrosine concentrations in plasma and brain of selfselecting rats were within normal levels. It became clear that rats have an ability to regulate phenylalanine intake, and that they select phenylalanine to meet their requirement for the amino acid.
- 財団法人 学会誌刊行センターの論文
著者
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山本 由喜子
Laboratory of Food and Nutrition, Department of Agricultural Chemistry, Faculty of Agriculture
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村松 敬一郎
Laboratory of Food and Nutrition, Department of Agricultural Chemistry, Faculty of Agriculture
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牧田 勝広
Laboratory of Food and Nutrition, Department of Agricultural Chemistry, Faculty of Agriculture, Shizuoka University
関連論文
- THE RELATIONSHIP BETWEEN WEIGHT GAIN AND FREE AMINO ACID CONCENTRATION OF PLASMA AND LIVER IN RATS FED A DIET SUPPLEMENTED WITH VARIOUS AMOUNTS OF LYSINE
- EFFECT OF SUPPLEMENTATION OF LIMITING AMINO ACIDS ON TYROSINE TOXICITY IN RATS FED WHEAT GLUTEN DIETS
- EFFECT OF INDIVIDUAL AMINO ACID SUPPLEMENTS ON THE TOXICITY OF EXCESS TYROSINE IN RATS
- BENEFICIAL EFFECT OF METHIONINE AND THREONINE SUPPLEMENTS ON TYROSINE TOXICITY IN RATS
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- Dietary sulfur-containing amino acids and glycine as determinant factors in plasma cholesterol regulation in growing rats.
- Effect of dietary glycine on methionine metabolism in rats fed a high-methionine diet.
- Self-selection of phenylalanine in the rat.