Estrous Cycle
Mostrando 1-12 de 139 artigos, teses e dissertações.
-
1. INFLUÊNCIA DO HEPES NA MATURAÇÃO IN VITRO DE OÓCITOS CANINOS OBTIDOS DE CADELAS EM DIESTRO E ANESTRO
Resumo Diferentemente de outras espécies domésticas, a maturação in vitro (MIV) de oócitos caninos apresenta sucesso limitado. O objetivo deste estudo foi avaliar o efeito do HEPES na maturação in vitro de oócitos caninos obtidos de cadelas em diestro e anestro. Os ovários foram coletados, isolados assepticamente e transportados refrigerados a uma t
Ciênc. anim. bras.. Publicado em: 13/12/2019
-
2. Differential expression of T helper cytokines in the liver during early pregnancy in sheep
Abstract Liver plays important roles in the innate and adaptive immunity, and contributes to the maternal immune adjustments during pregnancy in mice and rats. T helper 1 (Th1) and Th2 cytokines are related to immune response. However, expression of Th1 and Th2 cytokines in maternal livers is unclear during early pregnancy in sheep. In this study, livers wer
Anim. Reprod.. Publicado em: 25/11/2019
-
3. Transforming growth factor-beta family members are regulated during induced luteolysis in cattle
Abstract The transforming growth factors beta (TGFβ) are local factors produced by ovarian cells which, after binding to their receptors, regulate follicular deviation and ovulation. However, their regulation and function during corpus luteum (CL) regression has been poorly investigated. The present study evaluated the mRNA regulation of some TGFβ family l
Anim. Reprod.. Publicado em: 25/11/2019
-
4. Effect of hCG application at different moments of the estrous cycle on corpus luteum and uterine vascularization and serum progesterone concentration in mares
Abstract Establishment of pregnancy after embryo transfer is the ultimate goal of an embryo transfer program and increasing pregnancy rates and reducing pregnancy loss are mandatory. The utilization of treatments to improve conception rates in recipient mares has been the focus of several research groups over the last years and the results are controversial.
Anim. Reprod.. Publicado em: 25/11/2019
-
5. Melatonin may prevent or reverse polycystic ovary syndrome in rats
RESUMO OBJETIVO Avaliar os efeitos ovarianos da melatonina (Mel) em ratas com síndrome dos ovários policísticos (SOP) antes e após a indução do estro-permanente. MÉTODOS Trinta e duas ratas com ciclos estrais regulares foram igualmente divididas em quatro grupos: 1) GCtrl - fase de estro. 2) GSOP - fase de estro-permanente. 3) GMel1 – tratadas p
Rev. Assoc. Med. Bras.. Publicado em: 05/08/2019
-
6. SUPEROVULAÇÃO EM ÉGUAS DA RAÇA CRIOULA E QUARTO DE MILHA COM EXTRATO DE PITUITÁRIA EQUINA (EPE)
Resumo Este trabalho compara a resposta superovulatória de éguas doadoras de embriões das raças Quarto de Milha (QM) e Crioula, utilizando um protocolo com baixa dose de extrato de pituitária equina (EPE). Oito éguas QM e seis éguas Crioulas foram acompanhadas durante 3 ciclos estrais consecutivos, sendo que cada ciclo corresponde a um grupo. Grupo Co
Ciênc. anim. bras.. Publicado em: 20/05/2019
-
7. Evaluation of some oxidative-stress and antioxidant markers in goats during estrous cycle under Egyptian environmental conditions
ABSTRACT The objective of this study was to explore the impact of thermal stress on hormonal level and antioxidant activity in goats during various phases of the estrous cycle in the Egyptian summer. Forty cycling does were allocated to two groups (20 animals each) divided by season (mild/hot). Daily meteorological, rectal temperature, and respiratory rate d
R. Bras. Zootec.. Publicado em: 03/05/2018
-
8. Evaluation of cell proliferation and endometrial thickness of bitches in different periods of diestrus
ABSTRACT This study aimed to determine the histological features of the endometrium of bitches, as well as the cell proliferation at specific moments of diestrus, 10, 20, 30, 40, 50 and 60 days post ovulation, correlating the endometrial thickness with the uterine cell proliferation and the metabolic state (weight, blood glucose and plasma cholesterol) of th
An. Acad. Bras. Ciênc.. Publicado em: 14/08/2017
-
9. GOSSYPOL PROMOTES THE DEGENERATION OF CHICKEN OVARIAN FOLLICLES IN VITRO
ABSTRACT Gossypol, a phenolic compound produced by the pigment glands of cotton, is known to affect male reproduction. In females, exposure to gossypol has been associated with interference with the estrous cycle and embryo development. In laying hens fed cottonseed, gossypol was found to reduce egg production and weight and to cause discoloration of the egg
Rev. Bras. Cienc. Avic.. Publicado em: 2016-09
-
10. Behavioral effects of endogenous or exogenous estradiol and progesterone on cocaine sensitization in female rats
Cocaine sensitization is a marker for some facets of addiction, is greater in female rats, and may be influenced by their sex hormones. We compared the modulatory effects of endogenous or exogenous estradiol and progesterone on cocaine-induced behavioral sensitization in 106 female rats. Ovariectomized female rats received progesterone (0.5 mg/mL), estradiol
Braz J Med Biol Res. Publicado em: 2014-06
-
11. Ovarian blood vessel occlusion as a surgical sterilization method in rats
PURPOSE: To evaluate the female sterilization by occlusion of the ovarian blood flow, using the rat as experimental model.METHODS: Fifty-five females rats were divided into four groups: I (n=10), bilateral ovariectomy, euthanized at 60 or 90 days; II (n=5), opening the abdominal cavity, euthanized at 90 days; III (n=20), bilateral occlusion of the ovarian bl
Acta Cir. Bras.. Publicado em: 2014-04
-
12. N-acetylcysteine improves morphologic and functional aspects of ovarian grafts in rats
PURPOSE: To evaluate morphological and functional aspects of the ovarian graft in transplanted rats treated with NAC. METHODS: Female Wistar rats, virgin, 3 to 4 months old, weighing 200-250 grams were used in experiments. The rats have been kept in proper sanitary conditions, receiving food and water ad libitum. Five groups (n=10, each) were constituted: 4
Acta Cir. Bras.. Publicado em: 2014