Results 31 to 40 of about 110,172 (282)

Cryopreservation of equine oocytes: looking into the crystal ball [PDF]

, 2020
In vitro embryo production has evolved rapidly in the horse over the past decade, but blastocyst rates from vitrified equine oocytes remain quite poor and further research is needed to warrant application.
Angel Velez, Daniel, De Coster, Tine, Smits, Katrien, Van Soom, Ann, Woelders, Henri   +4 more
core   +2 more sources

Abnormal early cleavage events predict early embryo demise: sperm oxidative stress and early abnormal cleavage. [PDF]

, 2014
Human embryos resulting from abnormal early cleavage can result in aneuploidy and failure to develop normally to the blastocyst stage. The nature of paternal influence on early embryo development has not been directly demonstrated although many studies ...
Barker, Christopher M, Burruel, Victoria, Klooster, Katie, Meyers, Stuart, Pera, Renee Reijo   +4 more
core   +2 more sources

Correlation of the position and status of the polar body from the fertilized oocyte to the euploid status of blastocysts

Frontiers in Genetics, 2022
Polar bodies are tiny cells that are extruded during oocyte meiosis and are generally considered not essential for embryonic development. Therefore, polar bodies have been widely used as important materials for the preimplantation genetic diagnosis of ...
Yongle Yang, Wei Tan, Changsheng Chen, Lei Jin, Bo Huang   +4 more
doaj   +1 more source

Survival of bovine blastocysts produced in vitro and vitrified in vitri-tip and vitri-top devices. [PDF]

SPERMOVA, 2019
Vitrification is a new technique that has many potential advantages in mammalian oocytes and embryos. In the present work, the objective was to compare of post thawing survival rate by of blastocysts vitrified in vitro in two devices.
R. Condori , C. Quispe, E. Ancco , D. Dipaz, E. Mellisho   +4 more
doaj   +1 more source

Human embryos from overweight and obese women display phenotypic and metabolic abnormalities [PDF]

, 2014
STUDY QUESTION Is the developmental timing and metabolic regulation disrupted in embryos from overweight or obese women? SUMMARY ANSWER Oocytes from overweight or obese women are smaller than those from women of healthy weight, yet post-fertilization ...
Leary, C., Leary, Christine, Leese, H. J., Leese, Henry J., Sturmey, R. G., Sturmey, Roger G.   +5 more
core   +1 more source

The Open Cryotop System Is Effective for the Simultaneous Vitrification of a Large Number of Porcine Embryos at Different Developmental Stages

Frontiers in Veterinary Science, 2022
The Superfine Open Pulled Straw (SOPS) system is the most commonly used method for vitrification of pig embryos. However, this system only allows the vitrification of four to seven embryos per straw.
Alejandro Gonzalez-Plaza, Alejandro Gonzalez-Plaza, Josep M. Cambra, Josep M. Cambra, Inmaculada Parrilla, Inmaculada Parrilla, Maria A. Gil, Maria A. Gil, Emilio A. Martinez, Emilio A. Martinez, Cristina A. Martinez, Cristina Cuello, Cristina Cuello   +12 more
doaj   +1 more source

Modeling human trophoblast, the placental epithelium at the maternal fetal interface. [PDF]

, 2020
Appropriate human trophoblast lineage specification and differentiation is crucial for the establishment of normal placentation and maintenance of pregnancy. However, due to the lack of proper modeling systems, the molecular mechanisms of these processes
Bui, Tony, Horii, Mariko, Parast, Mana M, Touma, Ojeni   +3 more
core   +1 more source

Transient Sperm Starvation Improves the Outcome of Assisted Reproductive Technologies

Frontiers in Cell and Developmental Biology, 2019
To become fertile, mammalian sperm must undergo a series of biochemical and physiological changes known as capacitation. These changes involve crosstalk between metabolic and signaling pathways and can be recapitulated in vitro.
Felipe A. Navarrete, Luis Aguila, David Martin-Hidalgo, David Martin-Hidalgo, Darya A. Tourzani, Guillermina M. Luque, Goli Ardestani, Francisco A. Garcia-Vazquez, Francisco A. Garcia-Vazquez, Lonny R. Levin, Jochen Buck, Alberto Darszon, Mariano G. Buffone, Jesse Mager, Rafael A. Fissore, Ana M. Salicioni, María G. Gervasi, Pablo E. Visconti   +17 more
doaj   +1 more source

Telomere lengths in human oocytes, cleavage stage embryos and blastocysts [PDF]

, 2010
Telomeres are repeated sequences that protect the ends of chromosomes and harbour DNA-repair proteins. Telomeres shorten during each cell division in the absence of telomerase.
Achi, Aitken, Allsopp, Bailey, Baird, Betts, Blackburn, Cerone, de La Roche Saint-Andre, Dozortsev, Edwards, Evenson, Fiorenza, Fulka, G. M. Hartshorne, Gonzalo, H. P. Wong, Holt, Huang, J. Rai, Keefe, Keefe, Kimura, Lassalle, Liu, Liu, Liu, Longo, McIlrath, Meerdo, Morelli, Murnane, Rodr  guez, S. Turner, Schaetzlein, Tesarik, Valdes, Whitmire, Wong, Wright, Xu, Zhivkova, Zijlmans   +42 more
core   +2 more sources

Future Perspectives of POSEIDON Stratification for Clinical Practice and Research

Frontiers in Endocrinology, 2019
A total of 50% of patients undergoing IVF treatment has previously been estimated to fulfill the POSEIDON classification criteria; importantly, although the reproductive prognosis differs between patients, POSEIDON patients share the same characteristic ...
Peter Humaidan, Peter Humaidan, Antonio La Marca, Carlo Alviggi, Carlo Alviggi, Sandro C. Esteves, Sandro C. Esteves, Sandro C. Esteves, Sandro C. Esteves, Thor Haahr, Thor Haahr   +10 more
doaj   +1 more source