Johnson D J, Anderson G H
Am J Physiol. 1982 Jul;243(1):R99-103. doi: 10.1152/ajpregu.1982.243.1.R99.
The level of each plasma amino acid in male weanling rats was examined in relation to their intake from gluten, casein, synthetic amino acid, or zein diets. Plasma levels of valine, leucine, and isoleucine were found to be linearly related to the intake per gram diet regardless of the dietary source. Although levels of most other amino acids were not linearly related to intake, they were predictable if both the concentration of the amino acid in the diet and chronic level of protein intake were known. That is, a relationship, which applied to all diets, was found between the concentration of amino acid in the plasma, the concentration in the diet, and the total protein or amino acid nitrogen in the diet.
研究了雄性断奶大鼠血浆中每种氨基酸的水平与它们从麸质、酪蛋白、合成氨基酸或玉米醇溶蛋白饮食中的摄入量之间的关系。发现缬氨酸、亮氨酸和异亮氨酸的血浆水平与每克饮食的摄入量呈线性关系，而与饮食来源无关。虽然大多数其他氨基酸的水平与摄入量并非线性相关，但如果已知饮食中氨基酸的浓度和蛋白质摄入的长期水平，它们是可以预测的。也就是说，在血浆中氨基酸的浓度、饮食中的浓度以及饮食中的总蛋白质或氨基酸氮之间发现了一种适用于所有饮食的关系。
