The effects of protein intake on differences between NAA [nonessential amino acids] and EAA [essential amino acids] in gut content of rat jejunum and ileum after short and long term dietary treatment
1993
Suzic, S. (Medical Faculty, Beograd (Yugoslavia). Institute of Physiology) | Radunovic, Lj. | Petrovic, G. | Jankovic, V.
Young Wistar rats were fed isoenergetic diets with 0.5, 15 and 50 casein ad libitum for 7 and 21 days, respectively. The differences between the contents of nonessential amino acids (NAA) and essential amino acids (EAA) were more expressed in the ileum than in the jejunum especially after the longer treatment due to the higher values of NAA than EAA, regardless of the protein intake. At the same time, there was a tendency for the NAA/EAA differences to decrease after the longer treatment, especially in the jejunum. These findings support the concept of intraluminal homeostasis of amino acids in the jejunum after different protein intakes for longer periods as well as a possible greater accumulation of NAA than EAA in ileal gut content.
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