Results 61 to 70 of about 29,382 (227)

Oocyte–cumulus cell interaction: a key factor in early embryo development

Biological Reviews, EarlyView.
ABSTRACT The evaluation of oocyte competence is a fundamental step in achieving successful outcomes following assisted reproduction techniques (ART). At present, however, conventional oocyte maturation assessment is carried out by morphological observation, which is a subjective method that does not consider molecular features.
Marc Torres‐Garrido, Marc Yeste, Yentel Mateo‐Otero   +2 more
wiley   +1 more source

Evaluation of the presence of anti zona pellucida Antibodies is the serum of repeat breeder Holstein dairy cattle [PDF]

Āsīb/shināsī-i Darmāngāhī-i Dāmpizishkī, 2014
This study was conducted to evaluate the presence of anti zona pellucida antibodies in the serum of  repeat breeder Holstein cows in Third station Dairy Cattle Husbandry Agro Industry  in Moghan.
amirali kaveh, hossein nikniyaz
doaj  

Infertility and Immunocontraception based on zona pellucida [PDF]

Reproductive Medicine and Biology, 2013
AbstractThe zona pellucida (ZP) is an extracellular matrix surrounding ovarian oocytes, ovulated eggs and preimplantation embryos. It plays several important roles at different stages of reproduction. Its constituent glycoproteins are expressed specifically in the ovary.
Akiko, Hasegawa, Hiroyuki, Tanaka, Hiroaki, Shibahara   +2 more
openaire   +2 more sources

Impact of donor mare and stallion identity on the likelihood of pregnancy after transfer of in vitro produced embryos

Equine Veterinary Journal, EarlyView.
Abstract Background The success of in vitro embryo production (IVEP) is influenced by donor mare and stallion. Objectives To determine whether donor mare and stallion influence the pregnancy rate after transfer of in vitro produced (IVP) blastocysts and to identify factors influencing the likelihood of obtaining one or more pregnancies from a single ...
M. Papas, T. A. E. Stout, J. C. M. Vernooij, B. Leemans, L. Arnold, M. M. Beitsma, L. I. Wijnands, M. de Ruijter‐Villani, S. Colleoni, G. Lazzari, C. Galli, A. Claes   +11 more
wiley   +1 more source

Evaluation of Sugar Residues in Zona Pellucida During Ovarian Cycle

پزشکی بالینی ابن سینا, 2003
Glycoconjugates, particulary their sugar side chains, play important roles in development. This investigation was undertaken to examine the chemical nature of components in the zona pellucida possibly related to follicular development.           In this
Mohammad Barbarestani, Seyyed Mohammad Hosseinipanah, Ali Reza Fazel, Mehran Rezei Habibi, Mostafa Hoseini, Mohammad Akbari, Farid Abolhasani, Mir Abbas Mir Abdolvahabi   +7 more
doaj  

Pregnancy Outcomes and Postnatal Health From Transferred Mosaic Embryos Following Preimplantation Genetic Testing for Aneuploidy

iNew Medicine, EarlyView.
This illustration synthesizes the methods and conclusion of this study, demonstrating that the transfer of mosaic embryos following reimplantation genetic testing for aneuploidy does not increase the risk to postnatal health. ABSTRACT Next‐generation sequencing (NGS) has increased the detection of mosaic embryos during preimplantation genetic testing ...
Lili Chen, Dehuan Huang, Jingcheng Sang, Yiqi Yin, Caiyun Wu, Yan Hao, Dawei Chen, Zhiguo Zhang, Yunxia Cao, Ri‐Cheng Chian, Ping Zhou   +10 more
wiley   +1 more source

Human Blastocyst's Zona Pellucida segmentation via boosting ensemble of complementary learning

Informatics in Medicine Unlocked, 2018
Characteristics of Zona Pellucida (ZP), particularly its thickness, is a key indicator of human blastocyst (day-5 embryo) quality. Therefore, ZP segmentation is an important step towards achieving automatic embryo quality assessment.
Reza Moradi Rad, Parvaneh Saeedi, Jason Au, Jon Havelock   +3 more
doaj   +1 more source

Arrdc4‐dependent extracellular vesicle biogenesis is required for sperm maturation

Journal of Extracellular Vesicles, 2021
Extracellular vesicles (EVs) are important players in cell to cell communication in reproductive systems. Notably, EVs have been found and characterized in the male reproductive tract, however, direct functional evidence for their importance in mediating
Natalie J. Foot, Macarena B. Gonzalez, Kelly Gembus, Pamali Fonseka, Jarrod J. Sandow, Thuy Tien Nguyen, Diana Tran, Andrew I. Webb, Suresh Mathivanan, Rebecca L. Robker, Sharad Kumar   +10 more
doaj   +1 more source

Characterization of human zona pellucida glycoproteins [PDF]

Molecular Human Reproduction, 1999
The human egg may only be fertilized by one spermatozoon to prevent polyploidy. In most mammals, the primary block to polyspermy occurs at the zona pellucida (ZP). Little is known of the human ZP and the changes occurring following fertilization to prevent polyploidy. Using antibodies directed against synthetic peptides predicted from the human ZP2 and
Bauskin A.R., Franken D.R., Eberspaecher U., Donner P.   +3 more
openaire   +3 more sources

Multiple Roles of Protamine Kinase SRPK1 and Phosphatase PP1γ in Sperm Development

PROTEOMICS, EarlyView.
ABSTRACT Protein phosphorylation regulates key events of male germ cell differentiation. In the testis, SRPK1 and PP1γ are involved in protamine phosphorylation and dephosphorylation, respectively, and their deregulation is linked to defective chromatin structure and male infertility.
Alberto de la Iglesia, Mélina Blanco, Meritxell Jodar, Olivier Feudjio, Marjorie Leduc, Judit Castillo, Julie Cocquet, Rafael Oliva   +7 more
wiley   +1 more source