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Comparative Study
. 1978;23(3):206-9.
doi: 10.1159/000458578.

Comparison of the effect of various doses of thyroxine on jejunal disaccharidases in intact and adrenalectomized rats during the first 3 weeks of life

J Jumawan, O Koldovský
Comparative Study

Comparison of the effect of various doses of thyroxine on jejunal disaccharidases in intact and adrenalectomized rats during the first 3 weeks of life

J Jumawan et al. Enzyme. 1978.

Abstract

Administration of D,L-thyroxine (T4) daily (25 or 250 nmol/100 g body weight/24 h) for 4 days increased jejunal activity in 15-day-old rats; no effect was seen in 8-day-old rats. Maltase activity was increased in 15-day-old rats only when a 250-nmol dose was used. Similar results were obtained in unoperated and adrenalectomized rats. Specific activity of lactase was not influenced in unoperated 8- and 15-day-old rats; it was decreased in adrenalectomized 8- and 15-day-old rats when treated with a 250-nmol dose of T4; in 15-day-old rats, it also responded to 25-nmol doses. The lowest dose used (2.5 nmol/100 g body weight) had no effect at all.

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