[The formation of the enzyme systems of the initial and final stages of protein hydrolysis in rat postnatal ontogeny].

Proteolytic activity of the stomach and pancreas as well as glycyl-L-leucin-dipeptide-hydrolase activity of the small intestine after introduction of hydrocortisone on the 1-, 5-, 10-, 16- and 30th days of life was studied in rats. The enzyme system sensitivity responsible for protein hydrolysis was shown to be age-dependent on the hormone administration. The peculiarities of the stomach, pancreas and small intestine responses to the hormone administration was found: the enzyme system inducibility of the pancreas was significantly higher than that of the stomach and the small intestine during the whole suckling period.