[钠离子对雏鸡小肠中氨基酸和肽同化作用的影响]
[The effect of sodium ions on amino acid and peptide assimilation in the small intestine of developing chicks].
作者信息
Kushak R I, Basova N A
出版信息
Fiziol Zh SSSR Im I M Sechenova. 1989 Sep;75(9):1248-55.
The absorption of free glycine and L-tryptophan as well as amino acids released in the hydrolysis of glycil-L-leucine and glycil-L-tryptophan was studied in vitro with accumulating preparations of intestinal mucosa of 1-65-day old chicken. Two ways of absorption of free and peptide amino acids were found: sodium-dependent and sodium-independent. Intensity of each of them depended on the age of chicken and was dissimilar for the compounds. The sodium-independent way is more important for glycine than for free amino acid. Absorption of glycil-L-tryptophan as well as its amino acids is mainly performed by the sodium-dependent way.
利用1至65日龄鸡的肠黏膜累积制剂，在体外研究了游离甘氨酸、L-色氨酸以及甘氨酰-L-亮氨酸和甘氨酰-L-色氨酸水解释放的氨基酸的吸收情况。发现游离氨基酸和肽氨基酸有两种吸收方式：钠依赖性和非钠依赖性。每种方式的吸收强度取决于鸡的年龄，且不同化合物的吸收强度也不同。非钠依赖性吸收方式对甘氨酸比对游离氨基酸更重要。甘氨酰-L-色氨酸及其氨基酸的吸收主要通过钠依赖性方式进行。
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