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Showing 1 to 20 of 26 for “"PGF2α"”.
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Prostaglandin metabolism in the ovine corpus luteum
… of prostaglandin and possible catabolism of PGF2α by the corpus luteum. Expression patterns of two enzymes (cyclooxygenase-2 and 15-hydroxyprostaglandin dehydrogenase) important to prostaglandin synthesis and catabolism are described herein. On day 4 post estrus and day 13 postcoitus, the …
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Effect of delaying time of AI based on Estrotect patch status on pregnancy rates of beef heifers and nursing beef cows
… factors were patch status at 58 h post PGF2α injection (activated or inactivated) and time interval from PGF2α to TAI (58 or 76 h). Patch status was characterized at 58 h post PGF2α into 4 scores: 1 = 0% activated, 2 = 50% activated, 3 = 100% activated, and 4 = missing. Females with a …
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Comparison of Luteolysis and Timed Artificial Insemination Pregnancy Rates after Administration of PGF2a in the Muscle or the Ischiorectal Fossa in Cattle
Prostaglandin F2α (PGF2α) is commonly given to female cattle intramuscularly (IM) for the synchronization of estrus. A novel site for administration of PGF2α that improves beef quality assurance is the ischiorectal fossa (IRF). The objective of this study was to determine whether administration of …
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Role of Endogenous Prostaglandins on Kainic Acid Induced Seizure Activity
… intragastrically. Intracisternally administered PGF2α (700 ng), but not PGD2 (700 ng) and PGE2 (700 ng) completely alleviated KA-induced seizure activity potentiated by COX-2 inhibitors. PGF2α alone did not change the behavior on KA-induced seizure, however a FP receptor antagonist, AL 8810 (10 …
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NUCLEAR PROGESTIN RECEPTOR REGULATES FERTILITY AND SPAWNING IN FEMALE CICHLID ASTATOTILAPIA BURTONI
… routine. In female cichlids, prostaglandin F2a (PGF2α) drives spawning behaviors. Sensitivity to PGF2α and expression of its receptor, ptgfr, varies across the reproductive cycle. I look to progestin as a potential regulator of PGF2α sensitivity. Increasing progestin levels (important in final …
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Prostaglandina F2α como agente sincronizador e indutor de ovulação em fêmeas suínas pluríparas
… d- Cloprostenol (Análogo de Prostaglandina F2α – PGF2α) como agente sincronizador e indutor de ovulação em fêmeas suínas pluríparas. Foram utilizadas 125 fêmeas suínas pluríparas de linhagem comercial entre 3a e 6a ordem de parto, com escore de condição corporal entre 3,0 e 4,0 (na escala de 1 a …
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Synchronization and Resynchronization of Ovulation and Timed Insemination in Lactating Dairy Cows and Heifers
… with a combination of ECP, CIDR, prostaglandin (PGF2α), and ECP (CIDR-ECP), while the gonadotropin-releasing hormone (GnRH) group was synchronized using a combination of ECP, CIDR, PGF2α, and GnRH (CIDR-GnRH). All heifers were bred at either 48, 56, or 72 hours (h) after CIDR removal. Overall …
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Application de l’échographie à l’étude de la dynamique folliculaire lors de l’oestrus induit chez la vache Azawak au Niger
… Azawak dont l’oestrus a été induit par une PGF2α ou par des progestagènes. La documentation sur les caractéristiques et performances de reproduction des zébus africains est peu nombreuse. Ainsi, une synthèse a été réalisée pour dresser l’état des lieux des connaissances dans le domaine de la …
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Evaluation of the 5-day vs. 7-day Co-Synch + CIDR protocol in dairy heifers using timed AI.
… were to determine: the effectiveness of upfront PGF2α injection to regress the corpus luteum; ovulation response to GnRH; and pregnancy outcomes. Dairy heifers (n = 545) from three locations (Florida, Kansas, and Mississippi) were assigned randomly to each of two treatments: 1) 25 mg of PGF2α …
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Reproductive performance of Holstein cows treated with prostaglandin F2a, gonadotropin releasing hormone, and recombinant bovine Somatotropin
… treatment consisted of two injections of PGF2α given 14 d apart, with the second dose administered 14 d prior to the initiation of a TAI protocol. A total of 216 lactating Holstein cows were presynchronized with PGF2α and then received GnRH (100μg) at 67 ± 7 d post partum (PP), …
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Diverse roles of cyclooxygenase in the central nervous system and the periphery
… with neonatal seizure susceptibility, and PGF2α act as anticonvulsant in neonatal brain. In present study, mouse neonate (post-natal day 9; P9) are far more prone to KA-induced seizures than the adult (P35). The seizure activities in the adult, which were aggravated by COX inhibition, …
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Genetic Profiling of the Bovine Pituitary Gland Using cDNA Microarray Technology
… by the administration of prostaglandin F2α (PGF2α). This period is characterized by a decrease in circulating concentrations of P4 coincident with an increase in circulating concentrations of estradiol. Prior to the surge, FSH and LH are disconcordinately released but the underlying …
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Ensayo clínico aleatorizado para determinar la eficacia de un nutraceútico a base de frutas, bayas y verduras frente a la peroxidación lipídica.
… en los de carácter proinflamatorio como 15-keto-PGF2α, 11-β-PGF2α y 2,3-dinor 11β-PGF2α (p < 0.05), e incrementos en la PGE2 (p < 0.05) de carácter antiinflamatoria. Respecto a la peroxidación lipídica del sistema nervioso central, también se observaron mejoras significativas en cuanto al …
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Sincronización hormonal del estro en cabras criollas, bajo condiciones semi-intensivas de trópico seco en Nicaragua
… el CIDR ® ), se aplicó 3ml de Lutalyse ® (PGF2α, 5 mg Dinopróstamina por ml) vía intramuscular; El segundo tratamiento fue conformada: EAZI-BREED ® -CIDR ® + Lutalyse ® (PGF2α) al retiro del CIDR ® ; Tratamiento 3: control o efecto macho (estas fueron expuestas al macho de forma continua …
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Regulation of endometrial repair and its impact on heavy menstrual bleeding
… namely PGE2 and the potent vasoconstrictor PGF2α. Subsequent vasoconstriction of endometrial spiral arterioles is believed to result in a transient hypoxic episode in the upper endometrial layer. Therefore, the aims of this thesis were to determine (i) the endometrial expression of putative …
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Exposição à Hiperglicemia Materna Induz Disfunção Endotelial Em Artérias de Resistência da Prole Adulta. Papel das Prostaglandinas Derivadas da Cox-2.
… respectivamente). A liberação de TxB2, PGE2 e PGF2α foi determinada por imunoensaio enzimático. A expressão de COX-1 e COX-2 foi analisada por Western blot. A prole de ratas diabéticas desenvolveu hipertensão a partir dos 6 meses de idade comparada à prole de ratas controle. Em ratos STZ, o …
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Impact of an artificial insemination programme on reproductive efficacy and the cross-breeding if indigenous South African goats with Boer goats in Vhembe District
… gonadotropin (hCG) and prostaglandin F2α (PGF2α) treatments at the time of AI using fresh/frozen semen. Oxytocin, PGF2α and hCG showed a significant effect on improving pregnancy rate. A significant effect (P>0.001) was observed in fresh semen diluted in BAF18, with the highest pregnancy …
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The effectiveness and efficiency of ovulation induction agents in mares
… luteolysis induced with prostaglandin F2 alpha (PGF2α), a cycle with ovulation induced with Ovuplant™, and a final cycle with ovulation induced with Ovuplant™ and luteolysis induced with prostaglandinF2alpha (PGF2α). Progesterone levels for assessment of corpus luteum function were determined …
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Methyl esterification of fatty acids and eicosanoids with a novel reagent trimethylsilyldiazomethane for analysis by gas chromatography-mass spectrometry
… acid, such as prostaglandins PGE2 and PGF2α, (3) develop calibration curves for the fatty acids and prostaglandins with appropriate internal standards for use with GC-MS, and (4) determine whether this method could be used to characterize by GC-MS these lipids in cell culture and in …
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Untersuchen zur Regulation der uterinen und ovariellen Durchblutung sowie der Expression von Stickstoffmonoxidsynthasen und Östrogenrezeptoren im Verlauf des Zyklus und der Frühgravidität bei der Stute
… was induced on Day 5 of diestrous with the PGF2α-analogon Tiaprost (Ilirenâ, 450 mg i.m.) and in estrous ovulation was induced with hCG (Choriolutinâ, 2500 IE i.v.), when the size of one follicle reached 35 mm. Investigations were carried out in this cycle immediately before giving PGF2α and …
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