Action of estriol on the uropygial gland activity in pigeon.
Administration of estriol (Sigma Chemical Co., U.S.A.) in the female young-adult pigeons at a dose of 50 micrograms/bird/day for 7 consecutive days caused atrophy of the uropygial gland, associated with increased cytopycnosis and drastic cell loss within the holocrine alveoli and reduction in the content of the glandular lipids. Probable mode of action of this steroid upon the uropygial gland has been suggested in the light of the recent data on its anti-estradiol property manifested in rat uterus.
D000818:Animals; D001835:Body Weight / Q000187:drug effects; D010856:Columbidae / Q000502:physiology*; D004964:Estriol / Q000494:pharmacology*; D009929:Organ Size / Q000187:drug effects; D012007:Rectum; D012627:Sebaceous Glands / Q000166:cytology / Q000187:drug effects / Q000502:physiology*
D004964:Estriol