The control of adaptive hypertrophy in the salt glands of geese and ducks.

摘要: 1. Factors controlling adaptive hypertrophy, which occurs when marine, or potentially birds drink salt water, have been investigated in geese and ducks using changes salt-weight weight, RNA DNA contents as indices of this process. 2. Unilateral post-ganglionic denervation prevented the [RNA] [RNA]:[DNA] that occurred intact gland given water for 24 hr; had no significant effect on fresh throughout. 3. Atropine treatment also water. 4. In give 0.3 M-NaCl 48 hr salt-gland increase markedly. Treatment drinking with large doses corticosterone mammalian ACTH effects DNA; prolactin significantly raised [RNA]. 5. No total amount glands were observed these experiments, thus indicating hyperplasia does not occur within a bird first 6. It is concluded hypertrophy controlled by secretory nerves, hormones, if they play any part process, permissive secondary role. suggested maintenance cells fully-adapted state may be obligatorily related to activity induced cholinergic nerves.