[Experimental study on intestinal absorption of elemental diet].

An isolated intestinal segment separated from the flow of digestive fluid was made according to the method of Thiry Vella in the jejunum, ileum and large intestine of mongrel adult dogs in order to examine absorption of elemental diet at each intestinal segment. The same experiment was undertaken in a segment in the irradiated jejunum prepared as a model of disturbed intestine. Amino acids were adequately absorbed at the segments in the jejunum and ileum, and the absorbing pattern of each free amino acid at the two segments was almost the same. Nutritional components of the elemental diet were also absorbed adequately at the segment in the large intestine. Each intestinal segment showed specificity in absorbing electrolytes. There was no difference in absorption of nutritional components between the segments in the irradiated jejunum and the normal intestine, but absorption of electrolytes was affected by irradiation.