Results 111 to 120 of about 25,545 (268)

Reproductive Challenges of the Ageing Female: A Comprehensive Narrative Review

BJOG: An International Journal of Obstetrics &Gynaecology, EarlyView.
ABSTRACT Changes in societal norms over the last few decades have resulted in novel family planning trends, notably delayed childbearing and increased maternal age at the birth of the first child. Despite advances in reproductive medicine, ageing poses significant challenges.
Sofia Bitzika, Meletios P. Nigdelis, Angelos Daniilidis, Erich‐Franz Solomayer, Irene Lambrinoudaki, Efstratios M. Kolibianakis, Dimitrios G. Goulis   +6 more
wiley   +1 more source

Add-On Technologies That Aim to Improve Oocyte Quality and Embryo Implantation Potential

Medicina
Advancements in assisted reproductive technologies (ARTs) have led to the development of various add-on techniques aimed at improving oocyte quality and enhancing embryo implantation potential.
Nikos Petrogiannis, Maria Filippa, Kalliopi Chatzovoulou, Savvas Petrogiannis, Ioannis Filippas, Grigoris Grimbizis, Efstratios Kolibianakis, Katerina Chatzimeletiou   +7 more
doaj   +1 more source

Short communication. In vitro embryo production can be modified by the previous ovarian response to a superovulatory treatment in sheep

Spanish Journal of Agricultural Research, 2013
Thirty-two ewes were used to study how the ovarian response to a superovulatory treatment determines quality of oocytes recovered from ovaries after embryo collection, and their developmental capacity after in vitro maturation (IVM) and fertilization ...
F. Forcada, J. Estaún, A. Casao, L. Sánchez-Prieto, I. Palacín, J. A. Abecia   +5 more
doaj   +1 more source

Calcitonin‐like diuretic hormone influences reproduction in adult female Rhodnius prolixus

Insect Science, EarlyView.
Highlights • CT/DH‐like immunoreactivity is present in female reproductive tissues • CT/DH receptor transcripts are expressed in the fat body and ovaries • RNAi knockdown of CT/DH receptors reduces egg number and hatching rate • Rhopr‐CT/DH increases RhoprVg1 and RhoprVgR expression in ovaries in vitro • Rhopr‐CT/DH stimulates oviduct contractions in a
Areej N. Al‐Dailami, Ian Orchard, Angela B. Lange   +2 more
wiley   +1 more source

Stereological study of organelle distribution in human mature oocytes

Scientific Reports
The ultrastructure of human oocytes has been described only qualitatively. To offer a precise organelle spatial distribution and organelle volume during the main maturation stages, we previously conducted stereological studies on prophase-I (GV) and ...
Tânia Santos, Ana S. Pires-Luís, Ana Margarida Calado, Elsa Oliveira, Mariana Cunha, Joaquina Silva, Paulo Viana, José Teixeira-da-Silva, Cristiano Oliveira, Alberto Barros, Rosália Sá, Mário Sousa   +11 more
doaj   +1 more source

Short-term preservation of canine preantral follicles : effects of temperature, medium and time [PDF]

, 2009
The use of the large pool of preantral follicles is a promising alternative to provide high numbers of fertilizable oocytes to reproductive biotechnology.
Báo, Sônia Nair, Campello, Claudio Cabral, Celestino, Juliana Jales de Hollanda, Chaves, Roberta Nogueira, Figueiredo, José Ricardo de, Jewgenow, Katarina, Lopes, Cláudio Afonso Pinho, Melo, Mônica Aline Parente, Santo, Regiane Rodrigues dos, Silva, José Roberto Viana   +9 more
core   +1 more source

LsFAMeT and LsJHAMT coordinate JH biosynthesis to regulate fecundity in Laodelphax striatellus

Insect Science, EarlyView.
The small brown planthopper (SBPH), Laodelphax striatellus, can trigger large‐scale outbreaks when encountering suitable habitats during migration due to their strong reproductive ability. This study investigated the role of juvenile hormone (JH) in regulating SBPH reproduction.
Yan Guo, Bing‐Bing Shi, Xue‐Qi Zhang, Qiong Yang   +3 more
wiley   +1 more source

Microrheology of the cumulus-oocyte matrix using optical tweezers

JPhys Photonics
Optical tweezers have emerged as a powerful, versatile approach for a range of studies in cellular and molecular biology. A particular highlight has been its use for microrheology measurements in miniscule sample volumes.
C A Campugan, C Perrella, M Lim, T C Y Tan, E P Schartner, Y Arita, G D Bruce, T Mendonca, A J Wright, K Dholakia, K R Dunning   +10 more
doaj   +1 more source

The use of deidentified organ donor testes for research

Andrology, EarlyView.
Abstract Our knowledge of testis development and function mainly comes from research using mammalian model organisms, primarily the mouse. However, there are integral differences between men and other mammalian species regarding cellular composition and expression profiles during fetal and post‐natal testis development and in the mature testis ...
Marina V. Pryzhkova, Marnie W. Skinner, Juliana I. Candelaria, Stephen R. Wellard, Philip W. Jordan   +4 more
wiley   +1 more source

Pig Seminal Plasma Extracellular Vesicles Enhance Motility During Preservation of Epididymal Spermatozoa but Impair Capacitation and IVF Parameters

Andrology, EarlyView.
ABSTRACT Background Extracellular vesicles (EVs) produced by accessory sex glands play a key role in sperm functionality, influencing motility, viability, acrosome integrity, metabolic activity, and capacitation. Most studies on the effects of EVs on spermatozoa have focused on ejaculated spermatozoa, which have already been exposed to their own native
Ana Moya‐Fernández, Santa María Toledo‐Guardiola, Peter Silke, Sergio Navarro‐Serna, Carmen Matás   +4 more
wiley   +1 more source