Consulta: subjectFacets:"Prostaglandin F2α"
Registros recuperados: 2
Data/hora: 10/06/2024 02:49:06

Prostaglandin F2α Differentially Affects mRNA Expression Relating to Angiogenesis，Vasoactivation and Prostaglandins in the Early and Mid Corpus Luteum in the Cow
Provedor de dados: 19
Autores: SHIRASUNA, Koumei; SASAHARA, Kiemi; MATSUI, Motozumi; SHIMIZU, Takashi; MIYAMOTO, Akio; 白砂, 孔明; 松井, 基純; 清水, 隆; 宮本, 明夫.
Administration of prostaglandin (PG) F2α in cattle during the mid-luteal phase (Days 8-12 of the estrous cycle) drastically reduces the plasma progesterone concentrations and the volume of the corpus luteum (CL). However, PGF2α does not induce luteolysis during the early luteal phase (up to Day 5 of the estrous cycle). To characterize the possible distinct difference in acute response to a luteolytic dose of PGF2α administration, we determined various mRNA expressions in the early and mid CL relating to angiogenesis, vasoactivation and PG-related factors at 30 min after PGF2α injection in cyclic cows. The experiments were conducted on Day 4 (early CL) and Days 10-12 (mid CL). Cows were either injected with 500 μg PGF2α analogue or saline as the control...
Palavras-chave: Corpus luteum; Cow; Luteolysis; Prostaglandin F2α.
Ano: 2010
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2812

Genital  Blood Flow and Endometrial Gene Expression During the Preovulatory Period after Prostaglandin F2α-Induced Luteolysis in Different Luteal Phases in Cows
Provedor de dados: 19
Autores: JORDAN, Anne; HERZOG, Kathrin; ULBRICH, Susanne E; BEINDORFF, Nicola; HONNENS, Änne; KRÜGER, Lars; MIYAMOTO, Akio; BOLLWEIN, Heinrich; 宮本, 明夫.
The aim of this study was to examine the hypothesis that follicular and uterine perfusion as well as endometrial gene expression during the ovulatory period differs after induction of luteolysis during the 1st follicular wave compared with the 2nd wave or in intact cycle. Nine healthy non-lactating Holstein-Friesian cows were examined during three estrous cycles. A prostaglandin F2α analogue (PGF) was administered randomly either on Day 7 (1st wave cycle) or Day 11 (2nd wave cycle) after detection of ovulation (=Day 1). No hormonal treatment was used in the intact cycle with spontaneous ovulation. Transrectal Doppler sonography was conducted daily after PGF injection and in the intact cycle beginning on Day 18 of the estrous cycle until ovulation....
Palavras-chave: Blood flow; Cow; Endometrial receptors; Follicle; Prostaglandin F2α.
Ano: 2009
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2813