Results 211 to 220 of about 147,729 (282)

Development of the DONOR prediction model on the risk of hypertensive complications in oocyte donation pregnancy: study protocol for a multicentre cohort study in the Netherlands. [PDF]

BMJ Open
Lafeber GCM, Van der Endt VHW, Louwers Y, le Cessie S, van der Hoorn MP, Lashley EELO.   +5 more
europepmc   +1 more source

Sperm Mitochondrial DNA Copy Number and Nuclear DNA Methylation Across Clinical and Non‐Clinical Preconception Cohorts

Andrology, EarlyView.
ABSTRACT Background Sperm mitochondrial DNA copy number is an emerging marker of male fertility, with elevated mtDNAcn associated with poor semen quality across various populations. Sperm DNA methylation has also been previously demonstrated to be negatively correlated with semen parameters in IVF cohorts.
Savni Sawant, Karolina Nowak, Amanda L. Paskavitz, Emily Houle, Ricardo P. Bertolla, Lidia Minguez‐Alarcon, Russ Hauser, J. Richard Pilsner   +7 more
wiley   +1 more source

Sperm Selection Using Micro Swim‐Up: Improvement of Chromatin Integrity Compared to Density Gradient Centrifugation

Andrology, EarlyView.
ABSTRACT Background Selecting high‐quality spermatozoa with optimal nuclear integrity is a crucial step in assisted reproductive technologies (ART). While density gradient centrifugation (DGC) is widely used, the associated centrifugation steps may induce cell stress, potentially damaging sperm DNA.
Simone Palini, Serena Benedetti, Silvia De Stefani, Luca Galluzzi, Mariangela Primiterra, Sara Rita D'Errico, Michele Tanturli, Monica Muratori   +7 more
wiley   +1 more source

Obstetric and maternal outcomes of IVF and oocyte donation pregnancies among women ages 40-45-a large cohort study. [PDF]

J Assist Reprod Genet
Rahav-Koren R, Shalev-Ram H, Haikin-Herzberger E, Levi M, Wiser A, Miller N.   +5 more
europepmc   +1 more source

Live Birth Rates After Varicocele Embolization in Patients After Failed In Vitro Fertilization With Intracytoplasmic Sperm Injection

Andrology, EarlyView.
ABSTRACT Background and Objectives While in vitro fertilization with intracytoplasmic sperm injection (IVF‐ICSI) bypasses abnormalities in sperm concentration, motility, and morphology, it still has a significant failure rate. We report our experience on the effect of varicocele embolization (VE) on couples with varicocele related primary male factor ...
Anthony Verstandig, Adam Farkas
wiley   +1 more source

Oocyte Donation

, 2019
openaire   +2 more sources

ZAN, IZUMO1, and TMEM95 Protein Domains Identify the Physiological Status of the Sperm

Andrology, EarlyView.
ABSTRACT Background Infertility is a growing concern, which has led to an increase in the use of assisted reproductive techniques, involving in vitro sperm capacitation. Nonetheless, the optimal capacitation time remains a matter of debate, and it is unknown whether it has an impact on the localization of key membrane proteins.
Miranda Hernández‐Falcó, Paula Sáez‐Espinosa, Alejandro Romero, Andrea López‐Botella, Laura Robles‐Gómez, María José Gómez‐Torres   +5 more
wiley   +1 more source

Children Born Using Ejaculated Sperm From Men With Klinefelter Syndrome. Is Sperm Production Associated With Testicular Volume?

Andrology, EarlyView.
ABSTRACT Background A large number of children have been born using testicular sperm from men with Klinefelter syndrome (KS), whereas reports of children conceived using ejaculated sperm are rare. Objective To review all published cases of children conceived using ejaculated sperm from men with KS, assess their health and karyotype, and evaluate ...
Jens Fedder, Freja Sørensen
wiley   +1 more source

Male Mice Heterozygous for Protamine 1 and Protamine 2 Are Infertile, Displaying Sperm Damage and Retention of Protamine 2 Precursors, Transition Proteins, and Histones

Andrology, EarlyView.
ABSTRACT Background During spermiogenesis, protamines (PRMs) replace histones to hypercondense and protect sperm DNA. Rodents and primates express two PRMs (PRM1 and PRM2). Alterations of species‐specific PRM ratios are associated with sub‐ or infertility in mice and humans.
Gina Esther Merges, Christoph Wiesejahn, Mar Domingo‐Lopez, Simon Schneider, Andjela Kovacevic, Lena Arévalo, Hubert Schorle   +6 more
wiley   +1 more source