Induction Of Parturition
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Prostaglandina F2 alfa associada à ocitocina ou carbetocina na indução de partos em suínos / Prostaglandin f2 alpha associated with oxytocin or carbetocin in induction on parturition in swines
O presente estudo teve como objetivo avaliar a aplicação de análogo sintético da prostaglandina F2 (PGF2 ) associado à carbetocina ou ocitocina sobre a eficiência na indução ao parto em suínos. Foram analisados o tempo entre aplicação e início do trabalho de parto, duração do parto e percentual de natimortalidade. A indução do parto foi reali
Publicado em: 2009
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2. Puberty in gilts: I - Use of exogen gonadotrophin (eCG and LH) on the induction and synchronization of first oestrus. II - Effects of flushing on the oestrus cycle before first conception. III - Evaluation of the reproductive performance until first parturition / Puberdade em marrãs: I - Efeito das gonadotrofinas na indução e sincronização do estro à puberdade. II - Efeito do "flushing" alimentar no ciclo anterior à primeira concepção. III - Avaliação da eficiência produtiva e reprodutiva das marrãs até 1º parto
The objective of the study was to investigate in a biotecnical program applied in a commercial breeding unit, the effects of the gonadotrophins (eCG and LH) on puberty estrus inductions and synchronization in gilts followed by their ciclicity. The investigation included the use of flushing on preceding oestrus cycle to first artificial insemination (IA). The
Publicado em: 2005
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3. REGULATION OF STEROID RECEPTORS AND FOLLICULAR DYNAMICS IN HORMONAL INDUCTION SYSTEM POSTPARTUM BEEF COWS / REGULAÇÃO DE RECEPTORES ESTERÓIDES E DINÂMICA FOLICULAR EM UM SISTEMA DE INDUÇÃO HORMONAL PÓSPARTO EM VACAS DE CORTE
The objective of the present study was to determine the action of gestagens and estradiol benzoate (EB) on the mechanism of premature regression of the first corpus luteum (CL) after parturition, and to develop an efficient artificial insemination system for suckling beef cows. The effect of pre-exposure to gestagens and EB on the expression of the alpha (ER
Publicado em: 2005
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4. CONDIÇÕES DE NASCIMENTO DAS CRIANÇAS DO MUNICÍPIO DE SÃO JOSÉ DO NORTE/RS / Condition of childbirth in São José do Norte/RS, Brazil
This study aims at identifying factors influencing the condition of childbirth in São José do Norte/RS, in order to contribute to planning and conducting measures for mothers and children. A cross-sectional study on a popular basis was conducted among newborn babies in this district, from January to September 2004. Data about birth were caught from registr
Publicado em: 2004
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5. Oxytocin is a cardiovascular hormone
Oxytocin (OT), a nonapeptide, was the first hormone to have its biological activities established and chemical structure determined. It was believed that OT is released from hypothalamic nerve terminals of the posterior hypophysis into the circulation where it stimulates uterine contractions during parturition, and milk ejection during lactation. However, eq
Brazilian Journal of Medical and Biological Research. Publicado em: 2000-06
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6. Opposing actions of prostaglandins and oxytocin determine the onset of murine labor
Prostaglandins (PGs) have been recently proven essential for parturition in mice. To dissect the contributions of the two cyclooxygenase (COX) isoforms to the synthesis of PGs during pregnancy, we have characterized the parturition phenotype of COX-1-deficient mice. We find that mice with targeted disruption of the COX-1 gene have delayed parturition resulti
The National Academy of Sciences.
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7. Progesterone-metabolite prevents protein kinase C-dependent modulation of γ-aminobutyric acid type A receptors in oxytocin neurons
Gonadal steroid feedback to oxytocin neurons during pregnancy is in part mediated via the neurosteroid allopregnanolone (3α-OH-DHP), acting as allosteric modulator of postsynaptic γ-aminobutyric acid type A (GABAA) receptors. We describe here a form of nongenomic progesterone signaling by showing that 3α-OH-DHP not only potentiates GABAA receptor-channel
The National Academy of Sciences.
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8. Structure, characterization, and expression of the rat oxytocin receptor gene.
The multiple hormonal and neurotransmitter functions of the nonapeptide oxytocin are mediated by specific oxytocin receptors (OTRs). In most target tissues, the number of OTRs is strongly regulated. Specifically, in the uterus, a dramatic OTR upregulation precedes the onset of parturition. To study the molecular mechanisms underlying OTR regulation, we have
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9. Induction of maternal behavior in virgin rats after intracerebroventricular administration of oxytocin
Oxytocin produces uterine contractions and milk ejection, functions related to parturition and nuturing. Studies were conducted to determine if this peptide, native to the brain and the posterior pituitary gland, plays a role in the induction of maternal behavior. Intact virgin female rats were given 0.4 μg of oxytocin, 0.4 μg of [Arg8]vasopressin, or sali