Resorption of casein labeled with I¹³¹ and methionin labeled with S³⁵ from the digestive tract at various intervals after resection of two-thirds of the stomach

Summary

The speed of absorption of the splitting products of labelled I¹³¹ and S³⁵ methionine was studied in dogs at various intervals (ranging from 1 to 16 months) after partial resection of the stomach by the Billroth II method (Finsterer's modification). Experiments were staged on 10 dogs, 6 of which underwent stomach resection.

After gastic resection there was an accelerated absorption of the I¹³¹ casein-splitting products from the digestive tract and a reduced rate of their disappearance from the blood. The changed absorption rate of the protein-splitting products into the blood depends on the accelerated (in these conditions) gastric evacuatory function (x-ray investigations). Data obtained with I¹³¹ casein were confirmed by experiments with S³⁵ methionine administration per os to control and operated animals. Some changes in the process of intestinal absorption are retained by the animal for the subsequent period of the animal's life. The longest follow-up period after the operation was 16 months.