Results 41 to 50 of about 8,605 (217)

Progesterona e hormônio folículo-estimulante interagem e promovem a sobrevivência e o desenvolvimento in vitro de folículos pré-antrais caprinos [PDF]

, 2012
Este trabalho veri_icou os efeitos da progesterona e do hormonio foliculo-estimulante (FSH) na sobrevivencia e no crescimento de foliculos pre-antrais caprinos. Fragmentos de tecido ovariano foram cultivados por 1 ou 7 dias em Meio Essencial Minimo (MEM)
Báo, Sônia Nair, Campello, Claudio Cabral, Celestino, Juliana Jales de Hollanda, Figueiredo, José Ricardo de, Lima-Verde, Isabel Bezerra, Matos, Maria Helena Tavares de, Name, Khesller Patrícia Olázia, Rossetto, Rafael   +7 more
core   +1 more source

Activin promotes oocyte development in ovine preantral follicles in vitro

Reproductive Biology and Endocrinology, 2003
Activins have been implicated as important regulating factors for many reproductive processes. The aim of this study was to determine the effect of activin A on the development of ovine preantral follicles in vitro.
Telfer Evelyn E, Armstrong David G, Thomas Fiona H   +2 more
doaj   +1 more source

Androgen stimulates growth of mouse preantral follicles in vitro: Interaction with follicle-stimulating hormone and with growth factors of the TGFβ super family [PDF]

, 2017
Androgens are essential for the normal function of mature antral follicles but also have a role in the early stages of follicle development. Polycystic ovary syndrome (PCOS), the most common cause of anovulatory infertility, is characterized by androgen ...
Abbott, Abbott, Billig, Crespi, Da Silva-Buttkus, Durlinger, Ehrmann, Erickson, Fenwick, Fenwick, Forsdike, Franks, Franks, Grzesiak, Grzesiak, Hardy, Hernandez, Hillier, Hogg, Jocelyn Mora, Kacie Thomson, Kate Hardy, Livak, Maciel, Mark Fenwick, Mhairi Laird, Murray, Nimrod, Ogura-Nose, Padmanabhan, Pierre, Pradeep, Qureshi, Rodgers, Salmon, Sen, Sen, Shiina, Smith, Stephen Franks, Stubbs, Veiga-Lopez, Vendola, Vendola, Walters, Wang, Webber, Willis, Yang, Yu   +49 more
core   +1 more source

Ultrastructural and morphometric characterization of buffalo (Bubalus bubalis) ovarian preantral follicles [PDF]

, 2007
The main objective of the present study was to characterize buffalo preantral ovarian follicles. Parts of ovarian cortex, collected from postpubertal buffalo females that were having estrous cycles at regular intervals, were selected under ...
Báo, Sônia Nair, Luque, Maria Carolina Aquino, Mondadori, Rafael Gianella, Santin, Tiago Rollemberg   +3 more
core   +1 more source

Morphometric and ultrastructural characterization of Bos indicus preantral follicles [PDF]

Animal Reproduction Science, 2005
The aim of the present study was to characterize the ultrastructure of zebu cow preantral follicles (PAFs). Ovarian cortex samples were processed for light and transmission electron microscopy. Primordial follicles consisted of an oocyte surrounded by one layer of flattened or flattened-cuboidal granulosa cells. The oocyte contained a large and usually
Kacinskis, Mirella Ávila, Lucci, Carolina Madeira, Luque, Maria Carolina Aquino, Báo, Sônia Nair   +3 more
openaire   +2 more sources

Effects of sodium alginate capsules as 3D scaffolds on hormones and genes expression in preantral follicles of mice compared to 2D medium: An experimental study

International Journal of Reproductive BioMedicine, 2020
Background: The improvement of in vitro maturation methods, which can activate the preantral follicle growth, plays a crucial role in the production of mature oocytes in reproductive technology.
Cyrus Jalili, Fuzieh Khani Hemmatabadi, Kamran Mansouri, Mehrdad Bakhtiyari   +3 more
doaj   +1 more source

Regulation of ovarian function: the role of anti-Mullerian hormone [PDF]

, 2002
Anti-Mullerian hormone (AMH), also known as Mullerian inhibiting substance, is a member of the transforming growth factor beta superfamily of growth and differentiation factors.
Durlinger, A.L.L. (Alexandra), Themmen, A.P.N. (Axel), Visser, J.A. (Jenny)   +2 more
core   +2 more sources

The optimized research of the in vitro culture of preantral follicles in mice [PDF]

Journal of Clinical Laboratory Analysis, 2020
AbstractObjectiveEfficiency of preantral follicle culture in vitro is low and is dependent on species, development stage, and follicle‐stimulating hormone (FSH) concentration. Here, we optimized the preantral follicle in vitro culture system in mice.MethodsThe primary follicles (PM follicles, 80‐100 μm diameter ) and early secondary follicles (ES ...
Xiyan Wang, Liguo Wang, Yanmei Sun, Di Wu, Jiao Li, Lin Zhu, Shiwen Jiang, Xiaoyan Pan   +7 more
openaire   +2 more sources

Comparative Biometrical and Follicular Study in Pig Ovary

Scientific Papers Animal Science and Biotechnologies, 2023
Porcine ovaries are a biological material frequently used in studies that analyze follicular development processes, oocyte maturation in close connection with the stages of the estrus cycle. Ovarian follicles and their degree of development represent the
Ion Valeriu Caraba
doaj  

Androgen Action in the Ovary

Frontiers in Endocrinology, 2018
Androgen production by the ovary is an essential requirement for normal cyclical secretion of estradiol but its physiological role extends to important actions on both preantral and antral follicle development, including promotion of granulosa cell ...
Stephen Franks, Kate Hardy
doaj   +1 more source