Follicular Dynamic
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Immunostaining study of cytokeratins in human hair follicle development,
Abstract Background: The hair follicle is a unique structure, one of the most dynamic structures in mammalians, which can reproduce in every new cycle all the mechanism involved in its fetal development. Although a lot of research has been made about the human hair follicle much less has been discovered about the importance of the cytokeratins (CKs) in its
An. Bras. Dermatol.. Publicado em: 2020-06
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2. Immunohistochemical localization of progesterone receptors alpha (PRA) in ovary of the pseudopregnant rabbit
Abstract Progesterone plays an important role in the reproductive function and follicular development in mammals. The aim of the present study was to examine the localization of progesterone receptor alpha (PRA) in ovary of pseudopregnant rabbit by immunohistochemical methods. Samples were collected from 14 h. to 18 days of pseudopregnancy. At the first stag
Anim. Reprod.. Publicado em: 25/11/2019
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3. EFEITO DA ASSOCIAÇÃO DO FATOR DE CRESCIMENTO E DIFERENCIAÇÃO 9 (GDF-9) E DO HORMÔNIO FOLÍCULO ESTIMULANTE (FSH) SOBRE O DESENVOLVIMENTO IN VITRO DE FOLÍCULOS PRÉ-ANTRAIS CAPRINOS EM CULTIVO IN SITU DE LONGA DURAÇÃO / EFFECT OF ASSOCIATION AND GROWTH FACTOR DIFFERENTIATION 9 (GDF-9) and hormone FOLLICLE STIMULATING (FSH) DEVELOPMENT OF IN VITRO PREANTRAL FOLLICLES GOATS IN FARMING IN SITU LONG
The aim of this study was to evaluate the effects of growth differentiation factor 9 (GDF-9) and follicle-stimulating hormone (FSH) on the in vitro survival, growth and steroidogenesis of caprine preantral follicles cultured for 16 days. Ovarian fragments were cultured in αMEM+ in the presence or absence of GDF-9 (200 ng/mL) and/or FSH (50 ng/mL) added
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/07/2012
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4. Dinâmica folicular de vacas de corte tratadas com três protocolos de sincronização da ovulação =Ovarian follicular dynamics in beef cows treated with three protocols of synchronization of ovulation / Ovarian follicular dynamics in beef cows treated with three protocols of synchronization of ovulation
Background: Artificial insemination is an established and viable technique to accelerate the genetic advancement and economic return of the cattle. However, compromises the efficiency of detection of estrus results in low insemination rates. To avoid these problems in beef herd, synchronization protocols have been developed that allow inseminate large number
Publicado em: 2011
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5. Estudo da dinâmica folicular no protocolo de nove dias de sincronização de cios com o uso de um novo dispositivo de liberação sustentada de progesterona, associado ou não ao eCG, em ovelhas Santa Inês / Study of follicular dynamics during nine day estrus synchronization protocol using a new progesterone sustained release device, associated or not with eCG, in Santa Inês ewes
The present study aimed the assessment of follicular dynamics in Santa Inês ewes during the nine day estrus synchronization protocol, with or without the administration of eCG, using a new intravaginal silicon device, Primer-PR® (Tecnopec Brasil). In Experiment 1, ten ewes received the vaginal device on D0, which was removed on D9 and received 0,4mL of d-c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/03/2010
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6. SISTEMA PARA INSEMINAÇÃO ARTIFICIAL SEM OBSERVAÇÃO DE ESTRO EM VACAS DE CORTE AMAMENTANDO / ARTIFICIAL INSEMINATION SYSTEM WITHOUT ESTRUS OBSERVATION IN SUCKLED BEEF COWS
The aim of this study was to develop a timed artificial insemination system (TAI) in suckled beef cows. For this, in 227 cows 60-80 days postpartum, received estradiol benzoate (5mg) and a vaginal device containing 250mg of medroxyprogesterone acetate (MAP; day 0). On day six, prostaglandin analogous (125μg), eCG (400IU) was administered and calves were
Publicado em: 2008
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7. ESTERÓIDES NO CONTROLE DA REGRESSÃO DE FOLÍCULOS DE DIFERENTES DIÂMETROS PARA USO EM SISTEMAS DE INSEMINAÇÃO ARTIFICIAL EM TEMPO FIXO DE VACAS DE CORTE NO PÓS-PARTO / STEROIDS CONTROLLING THE REGRESSION OF FOLLICLES WITH DIFFERENT DIAMETERS FOR USE IN FIXED TIME ARTIFICIAL INSEMINATION SYSTEMS OF POST PARTUM BEEF COWS
Progestin associated to estradiol benzoate (EB) became the most used treatment for estrous induction in beef cow. However, those programs that use this association still can be enhanced to produce better pregnancy rates and easily the management. Two experiments were designed with this aim. In the first, it was investigated if progestin-estradiol association
Publicado em: 2007
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8. Sincronização da ovulação com dispositivo intravaginal de progesterona (CIDR®) em novilhas Bos indicus, Bos indicus x Bos taurus e Bos taurus / Synchronization of ovulation with intravaginal progesterone device in Bos indicus, Bos indicus x Bos taurus and Bos taurus heifers
This study evaluated the effect of treatment with progesterone intravaginal device (CIDR®) associated to estradiol benzoate (BE) and prostaglandin F2α in the follicular dynamic of B. indicus (Nelore and Gir), B. taurus (Angus and BWH) and respectively cross-breed. Aiming to evaluate the effect of different plasmatic progesterone concentration (P4)
Publicado em: 2004
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9. The spatiotemporal expression pattern of the bone morphogenetic protein family in rat ovary cell types during the estrous cycle
In the mammalian ovary, great interest in the expression and function of the bone morphogenetic protein (BMP) family has been recently generated from evidence of their critical role in determining folliculogenesis and female fertility. Despite extensive work, there is a need to understand the cellular sites of expression of these important regulatory molecul
BioMed Central.
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10. Synchronicity of frequently sampled, 24-h concentrations of circulating leptin, luteinizing hormone, and estradiol in healthy women
Leptin, an adipocyte hormone, is a trophic factor for the reproductive system; however, it is still unknown whether there is a dynamic relation between fluctuations in circulating leptin and hypothalamic—pituitary–ovarian (HPO) axis hormones. To test the hypothesis that fluctuations in plasma leptin concentrations are related to the levels of luteinizing
The National Academy of Sciences.
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11. The primordial pool of follicles and nest breakdown in mammalian ovaries
The creation of the pool of follicles available for selection and ovulation is a multi-faceted, tightly regulated process that spans the period from embryonic development through to the first reproductive cycle of the organism. In mice, this development can occur in mere weeks, but in humans, it is sustained for years. Embryonic germ cell development involve
Oxford University Press.
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12. Origin of germ cells and formation of new primary follicles in adult human ovaries
Recent reports indicate that functional mouse oocytes and sperm can be derived in vitro from somatic cell lines. We hypothesize that in adult human ovaries, mesenchymal cells in the tunica albuginea (TA) are bipotent progenitors with a commitment for both primitive granulosa and germ cells. We investigated ovaries of twelve adult women (mean age 32.8 ± 4.1
BioMed Central.