Results 51 to 60 of about 14,154 (183)

Hyperactivation and Tyrosine Phosphorylation of Cryopreserved Stallion Spermatozoa in Relation to Conventional In Vitro Fertilization Blastocyst Production

Andrology, EarlyView.
ABSTRACT Background Challenges in establishing clinical conventional in vitro fertilization (IVF) in horses include variation in sperm and oocyte quality, which can be affected by mare age. Extended preincubation of stallion spermatozoa has resulted in successful IVF.
Raul A. Gonzalez‐Castro, Carolina C. Porflidt, Alexandra L. Ash, Jacobo S. Rodriguez, Perla D. Fleury, Edward L. Squires, Elaine M. Carnevale   +6 more
wiley   +1 more source

Expression pattern of glycoconjugates in the Bidderian and ovarian follicles of the Brazilian toad Bufo ictericus analyzed by lectin histochemistry

Brazilian Journal of Biology
The Bidder's organ and ovary of the Brazilian toad Bufo ictericus were studied by light microscopy, using hematoxylin-eosin (HE) and periodic acid Schiff (PAS) staining.
C. F. Farias, R. A. Azevedo, L. Brito-Gitirana   +2 more
doaj   +1 more source

Infertility due to lack of zona pellucida caused by a compound heterozygous mutation in ZP1 gene

Reproductive and Developmental Medicine, 2018
Lack of the zona pellucida (ZP) is one of the manifestations of an oocyte maturation disorder. In recent years, genetic factors have attracted much attention as a possible cause of ZP anomalies.
Zheng Zhang, Tao Shangguan, Yu-Yan Li, Wei He   +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

Improving ARTs: Microfluidics as a Tool for Sperm Selection

Andrology, EarlyView.
ABSTRACT Sperm selection is a critical step in assisted reproductive technology (ART), as sperm quality directly influences embryo quality. In vivo, the female reproductive tract imposes several physical and physiological barriers that favors only the most optimal spermatozoa reaching the fertilization site.
A. Pérez‐Gómez, A. Urriés, J. L. de Pablo, L. Serrano‐Ramón, S. Sanchez, R. Herrer, J. M. Morrell, C. Malo   +7 more
wiley   +1 more source

Effects of human menopausal gonadotropin on zona pellucida and pregnancy outcomes of ovarian stimulation protocols

Iranian Journal of Reproductive Medicine, 2015
Background: Human menopausal gonadotropin (hMG) has contributed many improvements to human assisted reproduction. However, effects of hMG on oocyte development and clinical results remain controversial. Objective: This study was conducted to investigate
Bing He, Cheng Junping , Huang Li, Tan Weihong , Xue Lintao , Wang Shikai   +5 more
doaj  

Veterinarian attitudes towards immunocontraceptive use in cats

Australian Veterinary Journal, EarlyView.
Background The continuously expanding global cat population poses concerns to public health, native ecosystems and individual animal welfare. These concerns have led to additional management strategies to reduce unowned cat numbers, including the development of feline immunocontraceptives.
E Vartola, S Wills, E Cottingham, CD Marth, N Krekeler   +4 more
wiley   +1 more source

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

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

Biological Reviews, Volume 101, Issue 5, Page 2265-2278, October 2026.
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

Single‐cell transcriptomic analysis reveals subtle fluctuations of oocyte cryopreservation on mouse early embryo development

Clinical and Translational Medicine, Volume 16, Issue 9, September 2026.
Mature oocytes were subjected to cryopreservation followed by intracytoplasmic sperm injection (ICSI). Embryos at multiple developmental stages were collected, dissociated into single cells and processed for single‐cell library construction and bioinformatics analysis.
Yixin Ren, Qingyang Zhang, Fanqing Xu, Yao Li, Tianyi Liao, Mengyuan Zhao, Zhiqiang Yan, Xiaohui Zhu, Nan Wang, Peng Yuan, Gary D Smith, Jie Qiao, Jie Yan, Liying Yan, Qilong He   +14 more
wiley   +1 more source