Results 31 to 40 of about 147,586 (226)

Histological and ultrastructural analysis of cryopreserved sheep preantral follicles [PDF]

Animal Reproduction Science, 2006
The aim of this study was to verify the histological and ultrastructural characteristics of sheep preantral follicles after exposure of ovarian tissue to cryopreservation in glycerol (GLY), ethylene glycol (EG), propanediol (PROH) or dimethyl sulfoxide ...
Báo, Sônia Nair, Costa, Sonia Helena Furtado, Figueiredo, José Ricardo de, Hurk, Rob Van Den, Lucci, Carolina Madeira, Matosa, Maria H.T., Rodrigues, Ana Paula Ribeiro, Santos, Regiane R., Silva, José Roberto Viana   +8 more
core   +5 more sources

Transforming growth factor-β (TGF-β) maintains follicular ultrastructure and stimulates preantral follicle growth in caprine ovarian tissue cultured in vitro [PDF]

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2014
The objectives of this study were to investigate whether TGF-β affect the survival, activation and further growth of goat primordial follicles enclosed in ovarian cortex after in vitro culture.
G.Q. Rodrigues, I.M.T. Lima, R.N. Chaves, R. Rossetto, S.L. Costa, S.V. Castro, V.R.P. Barros, M.H.T. Matos, C.A.P. Lopes, S.N. Báo, C.C. Campello, J.R. Figueiredo   +11 more
doaj   +6 more sources

Mouse serum facilitates the expansion of the follicular cavity regardless of the estrous cycle phase [PDF]

Journal of Ovarian Research
Objective In investigating the effect of alcohol intake on the in vitro development of preantral follicles, physiological differences across estrous cycle phases in mice probably affect the results; therefore, it is necessary to determine whether serum ...
Meng-Ting Cao, Chen-Xuan Sun, Wei-Qiang Luo, Xue-Rui He, Le-Ning Dang, Yang Shi, Jia-Le Qi, Shan-Shan Gao, Meng-Yu Li, Jing Li, Jing Dong, Jun Hu, Xing-Rong Yan   +12 more
doaj   +2 more sources

Eugenol Improves Follicular Survival and Development During in vitro Culture of Goat Ovarian Tissue

Frontiers in Veterinary Science, 2022
This study evaluated the effects of different concentrations (10, 20, or 40 μM) of eugenol (EUG 10, EUG 20, or EUG 40), ascorbic acid (50 μg/mL; AA) or anethole (300 μg/mL; ANE 300) on the in-vitro survival and development of goat preantral follicles and
R. F. Silva, L. F. Lima, Anna C. A. Ferreira, A. F. B. Silva, D. R. Alves, B. G. Alves, A. C. Oliveira, Selene M. Morais, Ana Paula R. Rodrigues, Regiane R. Santos, J. R. Figueiredo   +10 more
doaj   +1 more source

Equine ovarian tissue xenografting: impacts of cooling, vitrification, and VEGF

Reproduction and Fertility, 2021
Ovarian tissue transplantation methods using cooled and cryopreserved samples have been attractive options for fertility preservation in animal models and humans.
Samara Silva Souza, Francisco Leo Nascimento Aguiar, Benner Geraldo Alves, Kele Amaral Alves, Fabiana Aparecida Santilli Brandão, Danielle Cristina Calado Brito, Ramon da Silva Raposo, Melba Oliveira Gastal, Ana Paula Ribeiro Rodrigues, José Ricardo Figueiredo, Dárcio Ítalo Alves Teixeira, Eduardo Leite Gastal   +11 more
doaj   +1 more source

Cryopreservation and characterization of canine preantral follicles.

Cryobiology, 2018
The aim of this study was to define the population, morphological and ultrastructural characteristics of bitch preantral follicles (PAFs) and to compare the effects on the morphology of PAF of two cryopreservation techniques - slow freezing (SF) and vitrification (V) - of bitches' ovarian tissue. The average population (number per ovary) of PAFs was 48,
J. L. Jivago, Fernanda Paulini, Renata Carvalho Silva, Michelle Silva Araujo, A.P.S. Marinho, C. M. Lucci   +5 more
semanticscholar   +3 more sources

Characterization of preantral follicle clustering and neighborhood patterns in the equine ovary

PLoS ONE, 2022
Understanding the transition from quiescent primordial follicles to activated primary follicles is vital for characterizing ovarian folliculogenesis and improving assisted reproductive techniques.
Kendall A. Hyde, Francisco L. N. Aguiar, Paula B. Alvarenga, Amanda L. Rezende, Benner G. Alves, Kele A. Alves, Gustavo D. A. Gastal, Melba O. Gastal, Eduardo L. Gastal   +8 more
doaj   +2 more sources

Review: Roles of follicle-stimulating hormone in preantral folliculogenesis of domestic animals: what can we learn from model species and where do we go from here?

Animal, 2023
The pituitary gonadotropin FSH is a glycoprotein critical for the development of ovarian follicles. Upon binding to its G protein-coupled membrane receptor located on the granulosa cells of ovarian follicles, FSH elicits a cascade of downstream ...
Amanda J. Morton, Juliana I. Candelaria, Stephanie P. McDonnell, Daniel P. Zgodzay, Anna C. Denicol   +4 more
doaj   +1 more source

-growth and Gene Expression of Porcine Preantral Follicles Retrieved by Different Protocols [PDF]

Asian-Australasian Journal of Animal Sciences, 2012
This study was conducted to determine how the isolation method of the porcine preantral follicles influenced the following follicular growth in vitro. Mechanical and enzymatical isolations were used for retrieving the follicles from prepubertal porcine ...
J. I. Ahn, S. T. Lee, J. H. Park, J. Y. Kim, J. H. Park, J. K. Choi, G. Lee, E. S. Lee, J. M. Lim   +8 more
doaj   +1 more source

Ultrastructure and viability of isolated bovine preantral follicles [PDF]

Human Reproduction Update, 1998
Techniques for the isolation of ovarian follicles and maturation of oocytes in vitro have enormous reproductive potential. Preservation of normal tissue function is vital. This study emphasizes the ultrastructure and viability of mechanically isolated bovine small (diameter 40-100 microm) preantral and large (140-450 microm) preantral/early antral ...
R, van den Hurk, E R, Spek, W J, Hage, T, Fair, J H, Ralph, K, Schotanus   +5 more
openaire   +2 more sources