Estrous Cycle
Mostrando 13-24 de 139 artigos, teses e dissertações.
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13. Systemic and reproductive toxicity induced by Parkia platycephala ethanolic extract in female Wistar rats
The present study was conducted to evaluate the toxicity of the ethanolic extract of leaves of Parkia platycephala Benth., Fabaceae, on systemic and reproductive parameters. In toxicity on the estrous cycle, four groups of not-pregnant Wistar rats received distilled water and the doses 250, 500 and 1000 mg.kg-1 of plant extract for thirty days, at the end of
Rev. bras. farmacogn.. Publicado em: 2013-12
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14. AÇÃO CENTRAL DA OCITOCINA NO CONTROLE DA INGESTÃO ALIMENTAR: influência do ciclo estral. / CENTRAL ACTION OF OXYTOCIN ON THE CONTROL OF FOOD INTAKE: influence of the estrous cycle.
In addition to stimulation of uterine contraction and milk ejection, oxytocin (OT) acts on neural circuits that control food intake. This study aimed to investigate the gonadal modulation of ocitocinergic control on food ingestion. Female Wistar rats with at least three regular cycles were monitored for 15 days and underwent implantation of cannula into the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/07/2012
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15. Aspectos morfofuncionais da próstata feminina do gerbilo durante o ciclo estral : efeitos da ovariectomia e posterior reposição prolongada pelo estradiol e progesterona / Morphofunctional aspects of gerbil female prostate during the estrous cycle : effects of ovariectomy and subsequent prolonged replacement by estradiol plus progesterone
A próstata feminina é uma glândula funcionalmente ativa encontrada em diversas espécies de mamíferos, incluindo humanos e roedores. Em fêmeas adultas de gerbilos, a próstata apresenta localização parauretral, exibindo íntimo contato com a parede da uretra média. Esta glândula é homóloga à próstata ventral de roedores machos, sendo formada por
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/02/2012
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16. Aspectos morfofuncionais da próstata feminina do gerbilo durante o ciclo estral : efeitos da ovariectomia e posteior exposição prolongada ao estradiol e estradio + testosterona / Morphofunctional aspects of gerbil female prostate during the estrous cycle : effects of ovariectomy and subsequent long-term exposure to estradiol and estradiol plus testosterone
A próstata feminina é uma glândula funcionalmente ativa encontrada em diversas espécies de mamíferos, incluindo humanos e roedores. Em fêmeas adultas de gerbilos, a próstata apresenta localização parauretral, exibindo íntimo contato com a parede da uretra média e distal. Esta glândula é homóloga a próstata ventral de roedores machos, sendo for
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/02/2012
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17. Follicular dynamics and production of oocytes in young Nellore heifers with energetic supplementation
To verify the effects of energy supplementation and fat on follicular dynamics, metabolic profile and the production of oocytes, 15 young heifers (Bos taurus indicus) with an average age of 14 months and with an initial weight of 256.35 kg were assigned to two treatments according to weight and follicular population as evaluated by ultrasonography: in T1 (1.
R. Bras. Zootec.. Publicado em: 2012-09
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18. Plasma urea nitrogen and progesterone concentrations and follicular dynamics in ewes fed proteins of different degradability
The effects of overfeeding with protein of different degradability on body condition, plasma urea nitrogen and progesterone concentrations, ovulation number and follicular dynamics were assessed in Santa Ines ewes. Twelve ewes were assigned to a randomized block design according to body weight and received overfeeding with soybean meal or with corn gluten me
Revista Brasileira de Zootecnia. Publicado em: 2012-07
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19. Estrous cycle and stress: influence of progesterone on the female brain
The female brain operates in a constantly changing chemical milieu caused by cyclical changes in gonadal hormones during the estrous cycle (menstrual cycle in women). Such hormones are highly lipophilic and pass readily from the plasma to the brain where they can influence neuronal function. It is becoming clear that the rapid reduction in peripheral circula
Brazilian Journal of Medical and Biological Research. Publicado em: 2012-04
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20. Effect of the ovulatory follicle diameter and progesterone concentration on the pregnancy rate of fixed-time inseminated lactating beef cows
The objective of this study was to evaluate the influence of the ovulatory follicle diameter on the reproductive performance of lactating beef cows subjected to low progesterone fixed-time artificial insemination (FTAI) protocols. Ninety-three lactating beef cows (60-80 days postpartum) at random stages of estrous cycle were given a luteolytic dose of prosta
Revista Brasileira de Zootecnia. Publicado em: 2012-04
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21. Relaxant effect of the essential oil of Croton nepetifolius on ovine cervix
We investigated the in vitro effect of the essential oil of Croton nepetifolius Baill., Euphorbiaceae (EOCN), on spontaneous or induced contractions of circular and longitudinal muscles from the ovine cervix during the luteal phase of the estrous cycle. The relaxant effect of EOCN was expressed as a percentage of the contraction recorded before the addition
Revista Brasileira de Farmacognosia. Publicado em: 17/01/2012
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22. Receptores do hormônio luteinizante em diferentes porções do oviduto de éguas em estro. / Receptors for luteinizing hormone in different portions of the oviduct of mares in estrus
Embryonic development begins with the fertilization of the egg by the sperm in the oviduct. The oviduct is a tortuous organ which extended measures 20 to 30cm and is divided into three parts: the isthmus, ampulla and infundibulum. Hormones influence the activity of target cells by binding to specific receptor molecules. Immunohistochemistry is the set of pro
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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23. Efeitos do treinamento físico intenso e da restrição alimentar sobre a ação da leptina mediada pelo hormônio concentrador de melanina no eixo reprodutor de ratas. / Effects of intense physical training and food restriction on the action of leptin mediated by melanin concentrating hormone in the reproductive axis in female rats.
Avaliamos o efeito do treinamento físico intenso e da restrição alimentar no eixo reprodutor e na expressão do RNAm do MCH em ratas fêmeas. Utilizamos ratas fêmeas sedentárias alimentadas (SA), sedentárias com restrição alimentar, treinadas alimentadas (TA) e treinadas com restrição alimentar. O grupo TR entrou em anestro a partir da quarta seman
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/10/2011
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24. ROTA DE AÇÃO DA PROSTAGLANDINA F2 ADMINISTRADA VIA SUBMUCOSA VULVAR NA LUTEÓLISE DE BOVINOS / ROUTE OF ACTION OF PROSTAGLANDIN F2 AFTER INTRAVULVOSUBMUCOUS INJECTION IN BOVINE LUTEOLYSIS
The aim of this study was to verify if prostaglandin F2 (PGF2) administered by intravulvosubmucous (IVSM) injection induces luteolysis by reaching the corpus luteum (CL) directly by a local absorption rote, preventing its metabolism in the lungs, or after absorption and distribution via the systemic circulation. In a first trial, the estrus rate of 1,937 bee
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/09/2011