Results 21 to 30 of about 672 (89)

Herpesvírus bovino tipo 1 em complexos cumulus‑oócito coletados de vacas infectadas naturalmente [PDF]

, 2016
The objective of this work was to investigate the presence of bovine herpesvirus type 1 (BoHV‑1) in follicular fluid and in cumulus‑oocyte complexes (COC) recovered from naturally infected cows but with no clinical signs of the disease.
Cortez, Adriana, Viana, Joao Henrique Moreira, Oliveira, Andre Penido, Nascimento, Paula Maria Pires, Ribeiro, Romulo Cerqueira Leite, Heinemann, Marcos Bryan   +5 more
core   +1 more source

Effect of concentration and exposure period to butyrolactone I on meiosis progression in bovine oocytes Efeito de concentração e tempo de exposição à butirolactona I na progressão da meiose de oócitos bovinos

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2006
The effect of concentration and exposure period of bovine oocytes to butyrolactone I (BLI) on meiotic block and in vitro maturation (IVM) kinetics was studied.
P.R. Adona, C.L.V. Leal
doaj   +1 more source

Efeitos do fator de crescimento dos fibrobalstos 8 (FGF8) durante a maturação in vitro do complexo cumulus-oócito bovino [PDF]

, 2013
Fibroblast growth factor 8 (FGF8) is expressed by the bovine oocyte, activate receptors expressed by cumulus cells and oocytes, and is involved in the regulation of glycolysis and meiosis in the murine COC.
Ormond, Cinthia Marenza
core   +4 more sources

Vitrification of bovine preantral follicles with dimethylsulfoxide and sucrose plus α-tocopherol

Pesquisa Veterinária Brasileira, 2016
: The objective of this study was to evaluate the vitrification of bovine preantral follicles with dimethylsulfoxide (D) and sucrose (S) plus α-tocopherol 5mmol/L (T5) or 10mmol/L (T10) and, evaluate the thawed with minimal essential medium (m) with or ...
Carolina R. Jimenez, Jurandy M. Penitente-Filho, Ciro A.A. Torres, Amanda M. Medeiros, Leandro S. Silva   +4 more
doaj   +1 more source

Laparoscopic ovum pick-up in spotted paca ( Cuniculus pacas )

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2016
The aim of this work is study the laparoscopic ovum pick-up (LapOPU) technique in spotted paca, describing surgery details, complications and oocyte recovery rate.
F.F.P.C. Barros, P.P.M. Teixeira, R.A.R. Uscategui, L.N. Coutinho, M.B.S. Brito, A.E. Kawanami, V.T. Almeida, R.S.G. Mariano, R.P. Nociti, M.R.F. Machado, W.R.R. Vicente   +10 more
doaj   +1 more source

Evaluation of Different Cryoprotectant Combinations in Testicular Vitrification in Dogs

Reproduction in Domestic Animals, Volume 60, Issue 6, June 2025.
ABSTRACT Testicular vitrification requires the use of high concentrations of cryoprotectants, which can cause damage to samples due to their toxicity. The combination of these substances comes up as a way to mitigate this problem. Thus, the aim of this study was to evaluate three cryoprotectant combinations in the testicular vitrification of dogs.
Jéssyka Araújo Noronha, Juliana de Souza Fernandes, Francisco Denilson Rodrigues Gomes, Julia Carrah Colares, Gisele Karla Sena Guimarães, Herlon Victor Rodrigues Silva, Lúcia Daniel Machado da Silva   +6 more
wiley   +1 more source

Ativação e fecundação do oócito de mamíferos [PDF]

, 2014
The oocyte is surrounded by the pellucid zone (PZ) during ovulation and, externally, by the corona radiata and cumulus oophorus cells, which are impregnated with progesterone and are capable of triggering the stimulus for acrosome reaction in a small ...
Souza, Fernando A., Chacón Jaramillo, Liliana, González Cuello, José Carlos, Cardona Álvarez, José Alberto, Pérez Osorio, Jair, Otero Arroyo, Rafael José   +5 more
core   +1 more source

Fator de crescimento derivado das plaquetas, retinol e insulina na regulação da maturação nuclear de oócitos bovinos e suas conseqüências no desenvolvimento embrionário Platelet-derived growth factor, retinol and insulin in the regulation of bovine oocyte nuclear maturation and their consequent effect in the embryonic development

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2001
O objetivo deste trabalho foi verificar as ações do fator de crescimento derivado das plaquetas (PDGF; P), da insulina (I), do retinol (R) e de suas associações (PI, PIR, IR e PR) na maturação nuclear (MN) de oócitos bovinos e suas conseqüências no ...
E.B. Bortolotto, P.B.D. Gonçalves, J.P. Neves, L.F.S. Costa, M.N. Maciel, M.M. Montagner, A.M. Farias, P. Stranieri   +7 more
doaj   +1 more source

Influence of Three Combinations of Cryoprotectants and Two Warming Temperatures on Cellular Morphology, Morphometry and Mitochondrial Activity of Vitrified Canine Testicles

Reproduction in Domestic Animals, Volume 60, Issue 5, May 2025.
ABSTRACT High concentrations of cryoprotectants required for testicular vitrification result in a toxic environment for cells. To mitigate this issue, a suitable alternative is to combine cryoprotectants. The temperature for warming a vitrified sample is also important to assure cell viability.
Juliana de Souza Fernandes, Jéssyka Araújo Noronha, Francisco Denilson Rodrigues Gomes, Bruna Farias Brito, Gisele Karla Sena Guimarães, Herlon Victor Rodrigues Silva, Leda Maria Costa Pereira Bersano, Lúcia Daniel Machado da Silva   +7 more
wiley   +1 more source

O sistema folicular: desenvolvimento de um protocolo para maturação oocitária in vitro que retarda a maturação nuclear e prolonga a comunicação entre o oócito e células do cumulus [PDF]

, 2016
A comunicação entre o oócito e células somáticas adjacentes é essencial para a diferenciação do complexo cumulus-oócito (COC). Essa comunicação é proporcionada por processos citoplasmáticos trans-zonais (TZP) que penetram através da zona pelúcida e ...
Soares, Ana Caroline Silva
core   +2 more sources