title: Relationship between pregnancy rate and serum progesterone concentration in cases of porcine embryo transfer.
abstract: The level of P4 at the time of embryo transfer (ET) is important. P4 concentrations and numbers of corpora lutea for 126 recipients were evaluated. Nuclear transfer embryos were transferred into 126 surrogates. 11 maintained their pregnancy until full-term delivery, 17 miscarried, and implantation failed in 98 animals. P4 levels in the full-term group were significantly different from those of the pigs that aborted or in which implantation failed (p < 0.05). However, the numbers of corpora lutea were not significantly different. These findings indicate that the concentration of progesterone can be an important factor for successful ET in pigs.
authors.affiliation: Department of Theriogenology and Biotechnology, College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University, Seoul 151-742, Korea.
authors.forename: Joonho
authors.initials: J
authors.lastname: Moon
authors.forename: Ji-Yei
authors.initials: JY
authors.lastname: Choi
authors.forename: Jung-Taek
authors.initials: JT
authors.lastname: Kang
authors.forename: Sol Ji
authors.initials: SJ
authors.lastname: Park
authors.forename: Su Jin
authors.initials: SJ
authors.lastname: Kim
authors.forename: Goo
authors.initials: G
authors.lastname: Jang
authors.forename: Byeong Chun
authors.initials: BC
authors.lastname: Lee
mesh_terms: D000818:Animals; D003338:Corpus Luteum / Q000502:physiology*; D004624:Embryo Transfer / Q000662:veterinary*; D004622:Embryo, Mammalian / Q000502:physiology*; D005260:Female; D053652:Nuclear Transfer Techniques; D011247:Pregnancy; D018873:Pregnancy Rate; D011374:Progesterone / Q000097:blood*; D012189:Retrospective Studies; D034421:Sus scrofa / Q000502:physiology*
chemical_list: D011374:Progesterone
keywords: corpus luteum; pregnancy; progesterone; somatic cell nuclear transfer