Results 31 to 40 of about 87,639 (309)

Morphological criteria of oocyte quality

Medicina, 2009
In vitro fertilization technology consists of the selection and fertilization of oocytes, the production and transplantation of embryos to recipients. The quality of oocytes has a direct impact on the fertilization and developmental competence of oocytes.
Kristina, Lasiene, Aleksandras, Vitkus, Angelija, Valanciūte, Vidmantas, Lasys   +3 more
openaire   +2 more sources

Decreased oocyte quality in patients with endometriosis is closely related to abnormal granulosa cells

Frontiers in Endocrinology, 2023
Infertility and menstrual abnormalities in endometriosis patients are frequently caused by aberrant follicular growth or a reduced ovarian reserve. Endometriosis typically does not directly harm the oocyte, but rather inhibits the function of granulosa ...
Weisen Fan, Zheng Yuan, Muzhen Li, Yingjie Zhang, Fengjuan Nan   +4 more
doaj   +1 more source

Mitochondria directly influence fertilisation outcome in the pig [PDF]

, 2006
The mitochondrion is explicitly involved in cytoplasmic regulation and is the cell's major generator of ATP. Our aim was to determine whether mitochondria alone could influence fertilisation outcome.
Abeydeera, Alves, Anderson, Barritt, Barritt, Barritt, Blok, Brenner, Cetica, Clayton, Cohen, Cohen, Cran, de Loos, Downs, Dumollard, Eisen, Emma C Spikings, Findlay, Fong, Hue, Jansen, Justin C St John, King, Koo, Krakauer, Larsson, Larsson, Li, Lin, Liu, Mach  ty, Marchington, Mariana Freitas, Marinos, McConnell, Michaels, Moyes, Park, Pik  , Poulton, Raghu, Reynier, Roca, Sathananthan, Shahinaz H El Shourbagy, Shea, Spelbrink, St John, St John, St John, St John, St. John, Stojkovic, Sun, Tessa, Tian, Trimarchi, Ursing, Van Blerkom, Van Blerkom, Van Blerkom, Wakayama, Wallace, Wilmut, Zamzami, Zernicka-Goetz   +66 more
core   +3 more sources

Vitrification of human immature oocytes before and after in vitro maturation: a review [PDF]

, 2017
The use of immature oocytes subjected to in vitro maturation (IVM) opens interesting perspectives for fertility preservation where ovarian reserves are damaged by pathologies or therapies, as in PCO/PCOS and cancer patients. Human oocyte cryopreservation
Ashourzadeh, S, Khalili, Ma, Macchiarelli, G, Nottola, Sa, Palmerini, Mg, Shahedi, A   +5 more
core   +1 more source

“Biomechanical Signaling in Oocytes and Parthenogenetic Cells”

Frontiers in Cell and Developmental Biology, 2021
Oocyte-specific competence remains one of the major targets of current research in the field of reproduction. Several mechanisms are involved in meiotic maturation and the molecular signature of an oocyte is considered to reflect its quality and to ...
Georgia Pennarossa, Fulvio Gandolfi, Tiziana A. L. Brevini   +2 more
doaj   +1 more source

Oocyte maturation and quality: role of cyclic nucleotides [PDF]

Reproduction, 2016
The cyclic nucleotides, cAMP and cGMP, are the key molecules controlling mammalian oocyte meiosis. Their roles in oocyte biology have been at the forefront of oocyte research for decades, and many of the long-standing controversies in relation to the regulation of oocyte meiotic maturation are now resolved.
Gilchrist, RB, Luciano, AM, Richani, D, Zeng, HT, Wang, X, De Vos, M, Sugimura, S, Smitz, J, Richard, FJ, Thompson, JG   +9 more
openaire   +5 more sources

Noninvasive bovine oocyte quality assessment: possibilities of a single oocyte culture [PDF]

Theriogenology, 2010
Although bovine embryos are routinely produced in vitro for several decades, there still exists a critical need for techniques to accurately predict the oocyte's developmental competence in a noninvasive way, before the in vitro embryo production procedure.
Goovaerts, Ilse, Leroy, Jo, Jorssen, Ellen, Bols, Peter   +3 more
openaire   +3 more sources

Research progress in quality assessment methods for oocytes [PDF]

Yixue xinzhi zazhi
With the decline of fertility globally, more and more infertile patients are choosing assisted reproductive technology (ART) to achieve their reproductive desires. Oocyte quality is one of the key factors affecting the success of ART.
TAN Yan, GONG Xuefeng, LONG Wenxiang
doaj   +1 more source

Follicular-fluid anti-Mullerian hormone (FF AMH) is a plausible biochemical indicator of functional viability of oocyte in conventional in vitro fertilization (IVF) cycles

Journal of Human Reproductive Sciences, 2013
Context: Oocyte quality may be a governing factor in influencing in vitro fertilization (IVF) outcomes. However, morphological evaluation of oocyte quality is difficult in conventional IVF cycles.
Bindu N Mehta, Meena N Chimote, Nishad N Chimote, Nirmalendu M Nath, Natachandra M Chimote   +4 more
doaj   +1 more source

Follicular GH and IGF1 Levels Are Associated With Oocyte Cohort Quality: A Pilot Study

Frontiers in Endocrinology, 2021
IntroductionOocyte quality contributes to the development of an optimal embryo and thus a successful pregnancy. The objective of this study was to analyse the association between oocyte cohort quality and the follicular levels of growth hormone (GH ...
Florence Scheffler, Florence Scheffler, Albane Vandecandelaere, Marion Soyez, Dorian Bosquet, Dorian Bosquet, Elodie Lefranc, Henri Copin, Aviva Devaux, Aviva Devaux, Moncef Benkhalifa, Moncef Benkhalifa, Rosalie Cabry, Rosalie Cabry, Rachel Desailloud, Rachel Desailloud   +15 more
doaj   +1 more source