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Sucrase activity in the intestine of the chick: Normal development and influence of hydrocortisone, actinomycin D, cycloheximide, and puromycin

✍ Scribed by Brown, Kathren Mortenson

Publisher: John Wiley and Sons
Year: 1971
Tongue: English
Weight: 955 KB
Volume: 177
Category: Article
ISSN: 0022-104X
DOI: 10.1002/jez.1401770410

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✦ Synopsis

Sucrase activity i n the intestine of the chick embryo increases to a pre-hatching maximum at 19 days. A significant decrease i n activity occurs by 20 days, followed by rapid increases i n the jejunum and the ileum after hatching, while duodenal activity continues to decrease. The injection of hydrocortisone resulted in significant increases i n sucrase activity. The decrease i n activity that normally occurred after 19 days was delayed until after 20 days. The hydrocortisone-induced increases were completely abolished when cycloheximide was administered two or three days after the hormone injection.

When actinomycin D was administered at 16 days, there were significant

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