Rapid absorption and local redistribution of progesterone after vaginal application in gilts.
Catheters were implanted in 6 anaesthetized gilts (3 animals in the follicular phase, 3 in the luteal phase) into a carotid artery and into the utero-ovarian vein and uterine artery on both sides. The uterine lumina were closed by a suture. Further, a catheter was inserted into the vagina after which the animals were allowed to recover. Tritiated progesterone was infused into vagina the following day during a 2 min period and simultaneous blood samples collected from the 5 catheters every 10 min for 2 h after which the animals were sacrificed. Tissue samples were obtained from the genital organs. The results showed a rapid absorption of progesterone from the vaginal lumen and a marked redistribution to the genital organs. The increased level of radioactivity in the plasma samples collected from the uterine arteries compared to the simultaneous samples from the carotid artery in 2 of the 3 animals in the luteal phase indicates the existence of a local redistribution system.
Einer-Jensen
N
N
Department of Physiology, Odense University, Denmark.
Kotwica
J
J
Krzymowski
T
T
Stefanczyk-Krzymowska
S
S
Kaminski
T
T
D000042:Absorption; D000818:Animals; D005260:Female; D005498:Follicular Phase / Q000097:blood; D005836:Genitalia, Female / Q000378:metabolism; D008183:Luteal Phase / Q000097:blood; D011374:Progesterone / Q000097:blood / Q000493:pharmacokinetics*; D013552:Swine / Q000502:physiology*; D014621:Vagina / Q000378:metabolism* / Q000502:physiology
D011374:Progesterone