Results 51 to 60 of about 138,167 (340)

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

Effects of reactive oxygen species levels in prepared culture media on embryo development: A comparison of two media

Taiwanese Journal of Obstetrics & Gynecology, 2014
Objective: This study determined the correlation between the levels of reactive oxygen species (ROS) in prepared culture media and the early development of human embryos. Materials and methods: This was an autocontrolled comparison study.
Ying-Fu Shih, Tsung-Hsien Lee, Chung-Hsien Liu, Hui-Mei Tsao, Chun-Chia Huang, Maw-Sheng Lee   +5 more
doaj   +1 more source

Effect of equilibration time on clinical and neonatal outcomes in human blastocysts vitrification

Reproductive Medicine and Biology, 2020
Purpose Prolonged exposure to equilibration solutions may be detrimental to an embryo's developmental potential, whereas a shorter exposure may affect the penetration of cryoprotectants into blastomeres.
Shingo Mitsuhata, Momoko Hayashi, Yoshitaka Fujii, Hiroaki Motoyama, Yuji Endo   +4 more
doaj   +1 more source

Role of N-acetylcysteine treatment in women with advanced age undergoing IVF/ICSI cycles: A prospective study

Frontiers in Medicine, 2022
ObjectiveThe main objective of this study was to explore the efficacy of a new antioxidant N-acetylcysteine (NAC) supplementation in reproductive outcomes of advanced age women undergoing in vitro fertilization/intracytoplasmic sperm injection-embryo ...
Xiufang Li, Xiufang Li, Zhongqing Wang, Zhongqing Wang, Huidan Wang, Haiyan Xu, Yan Sheng, Fang Lian   +7 more
doaj   +1 more source

Mechanics of mouse blastocyst hatching revealed by a hydrogel-based microdeformation assay

Proceedings of the National Academy of Sciences of the United States of America, 2018
Significance Blastocyst hatching is crucial for implantation of mammalian embryos and a common failure point during in vitro fertilization (IVF). We have little knowledge of the mechanical basis whereby an embryo hatches out of the zona pellucida.
K. Leonavicius, C. Royer, Chris Preece, B. Davies, J. Biggins, S. Srinivas   +5 more
semanticscholar   +1 more source

In vitro production of bovine embryos derived from individual donors in the Corral® dish [PDF]

, 2017
Background: Since the identity of the embryo is of outmost importance during commercial in vitro embryo production, bovine oocytes and embryos have to be cultured strictly per donor.
A Cebrian-Serrano, Ann Van Soom, C Carolan, C O’Neill, C O’Neill, E Wydooghe, Eline Wydooghe, EM O’Doherty, Erik Mullaart, G Vajta, Hiemke M. Knijn, I Donnay, IGF Goovaerts, J Merton, JF Hasler, JF Hasler, JHF Pontes, JS Merton, K Matsuura, L Ferry, LJ Ding, M Hoelker, M Lane, Maaike Catteeuw, ML Reed, N Gopichandran, NK Khurana, P George, PEJ Bols, PEJ Bols, R Boni, R Roover De, RB Gilchrist, S Spanos, SA Machado, SJ Dai, T Ebner, T Fujita, WG Feng   +38 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

Regulation of blastocyst formation

Frontiers in Bioscience, 2001
Preimplantation or pre-attachment development encompasses the "free"-living period of mammalian embryogenesis, which directs development of the zygote through to the blastocyst stage. Blastocyst formation is essential for implantation, establishment of pregnancy and is a principal determinant of embryo quality prior to embryo transfer.
Watson, A J, Barcroft, L C
openaire   +5 more sources

Progesterone governs endometrial proliferation-differentiation switching and blastocyst implantation.

Endocrine journal, 2019
Blastocyst implantation contains the following three processes: apposition, attachment, and invasion of the blastocyst. Ovarian hormone progesterone (P4) regulates these processes exquisitely.
Yasushi Hirota
semanticscholar   +1 more source

Which Blastocyst to Be Biopsied? - Blastocyst Stage and Quality

Fertility & Reproduction, 2023
This talk is an engaging format to address crucial aspects of selecting the most suitable blastocyst for biopsy to optimize the success of PGT procedures and successful pregnancies. The talk commences with an overview of various blastocyst stages and relevant morphological characteristics, elucidating the critical developmental milestones and key ...
openaire   +2 more sources