Results 31 to 40 of about 74,222 (193)
Granulosa cell proliferation is inhibited by PGE2 in the primate ovulatory follicle
Animal Cells and Systems, 2020 Prostaglandin E2 (PGE2) is a key paracrine mediator of ovulation. Few specific PGE2-regulated gene products have been identified, so we hypothesized that PGE2 may regulate the expression and/or activity of a network of proteins to promote ovulation.
Patric S. Lundberg +5 more
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Role of mTOR Signaling in Female Reproduction
Frontiers in Endocrinology, 2019 Mammalian target of rapamycin (mTOR) is a conserved serine/threonine kinase of the phosphatidylinositol kinase-related kinase family that regulates cell growth, metabolism, and autophagy.
Zaixin Guo, Qi Yu
doaj +1 more source
Role of Sex Hormone Receptors in Ovulation
Taiwanese Journal of Obstetrics & Gynecology, 2005 Sex hormones including progestins, androgens, and estrogens produced de novo from cholesterol within the ovary play important roles in the growth and differentiation of reproductive tissues and in the maintenance of fertility.
Peng-Hui Wang
doaj +1 more source
Frontiers in Endocrinology, 2020 Objective: To evaluate the effect of human chorionic gonadotropin (hCG) trigger ovulation on pregnancy outcomes in natural IUI cycles with donor sperm.Methods: This retrospective cohort study included 5,610 first-natural IUI cycles with donor sperm in ...
Ji-Peng Wan +19 more
doaj +1 more source
Fishes, 2019 Wild-caught hāpuku (Polyprion oxygeneios) spawn readily in captivity, but although first filial (F1) hāpuku complete vitellogenesis, females fail to undergo oocyte maturation and spawn or produce poor quality eggs.
Matthew J. Wylie +6 more
doaj +1 more source
Ciência Rural, 1995 A gonadotrofina coriônica equina (eCG) foi purificada e caracterizada com respeito ao grau de pureza e atividade biológica. A pureza de quatro preparações foi determinada por eletroforese e a atividade biológica pelo incremento do peso ovariano de ratas ...
José Antonio Guimarães Aleixo +4 more
doaj +1 more source
Ovary and ovulation: Symmetry and ovulation in women [PDF]
Human Reproduction, 1996 Women have cryptic ovulation, and self-observation methods of determining the timing of ovulation, such as monitoring cervical mucus symptoms or recording basal body temperature, are not reliable. It has recently become apparent that the symmetry of paired soft tissue traits, such as breast size and digit length, changes across the menstrual cycle ...
J.T. Manning, Diane Scutt
openaire +3 more sources
Dissection of the Ovulatory Process Using ex vivo Approaches
Frontiers in Cell and Developmental Biology, 2020 Ovulation is a unique physiological phenomenon that is essential for sexual reproduction. It refers to the entire process of ovarian follicle responses to hormonal stimulation resulting in the release of mature fertilization-competent oocytes from the ...
Alexander A. Tokmakov +2 more
doaj +1 more source
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2008 Avaliaram-se os efeitos da progesterona (P4) sobre o crescimento folicular e na endocrinologia reprodutiva em ovelhas Bergamácia. Quatorze ovelhas sincronizadas com prostaglandinas (PGF2alfa ) foram distribuídas em dois grupos (n=7/grupo): grupo-controle
L.F. Uribe-Velásquez +2 more
doaj +1 more source
Pesquisa Agropecuária Brasileira, 2001 O objetivo deste trabalho foi estabelecer alternativas para indução e sincronização do estro em cabras leiteiras manejadas semi-intensivamente. Foram conduzidos quatro experimentos com 411 cabras na Embrapa-Centro Nacional de Pesquisa deCaprinos, Sobral,
Rui Machado, Aurino Alves Simplício
doaj +1 more source