Enlargement of salivary glands in rats after chronic administration of physalaemin or isoprenaline

Abstract
Chronic administration of physalaemin and isoprenaline to rats produced a significant salivary glands enlargement which was moderate (34% fresh weight increase and 48% dry weight increase compared with control glands) after the peptide administration and striking after the amine (630% fresh weight increase and 600% dry weight increase compared with control glands). Physalaemin caused only hypertrophy of the gland, whereas isoprenaline induced a marked hyperplasia.