Results 51 to 60 of about 4,054 (204)

Second-generation preimplantation genetic testing for aneuploidy in assisted reproduction: a SWOT analysis.

open access: yes, 2019
Second-generation preimplantation genetic testing for aneuploidy (PGT-A 2.0) in patients with an unfavourable reproductive and IVF prognosis is becoming common practice, with the aim of improving reproductive outcomes.
Checa, Miguel Angel   +9 more
core   +2 more sources

Does ICSI for in vitro fertilization cause more aneuploid embryos?

open access: yesMolecular Cytogenetics, 2020
Background High proportion of human embryos produced by in vitro fertilization (IVF) is aneuploidy. Many factors are related to the prevalence of embryonic aneuploidies, such as maternal age, sperm quality, and in vitro manipulation of oocytes.
Xiangli Niu   +3 more
doaj   +1 more source

A Spotlight on Yolk‐sac Tumors: Molecular Pathology, Current Diagnostics, and Novel Therapeutics

open access: yesAndrology, EarlyView.
ABSTRACT Background Yolk‐sac tumors are an aggressive subtype of testicular cancer that significantly contribute to disease progression and therapy resistance, especially in adults. While testicular cancer generally has high cure rates with cisplatin‐based treatment, adult yolk‐sac tumors often appear as components of mixed tumors with poor response to
Evangelos Prokakis   +3 more
wiley   +1 more source

Next-Generation Sequencing-Based Pre-Implantation Genetic Testing for Aneuploidy (PGT-A): First Report from Saudi Arabia

open access: yes, 2021
Recently, high-throughput next-generation sequencing (NGS)-based preimplantation genetic testing for aneuploidies techniques came into use. This technique is essential for successful embryo transfer and accomplishing pregnancy, thus reducing the time and
Yusra Alyafee   +9 more
core   +1 more source

The Evolving Landscape of CHD Genetics: A Contemporary Guide to Genetic Testing and Management

open access: yesJournal of Paediatrics and Child Health, EarlyView.
ABSTRACT Congenital heart disease (CHD) is the most common birth defect, affecting an estimated 9.4/1000 infants globally. The genetics of CHD is complex, with most cases thought to have multifactorial aetiology, implicating both genetic and environmental factors.
Bridget R. O'Malley   +3 more
wiley   +1 more source

Chromosome segregation and recombination in human meiosis: Clinical applications and insight into disjunction errors [PDF]

open access: yes, 2015
Chromosome copy number errors (or aneuploidy) of gametes and embryos occurs in humans more frequently than in any other studied species, with a spectrum of manifestations from implantation failure to affected live births.
Ottolini, Christian Simon   +1 more
core  

Preimplantation aneuploidy screening using embryonic cell-free DNA isolated from spent culture medium: a case report

open access: yesEgyptian Journal of Medical Human Genetics
Background Chromosomal aberrations are frequent in human embryos and can be identified during IVF by performing preimplantation genetic testing for aneuploidies (PGT-A).
Lama Khudari   +2 more
doaj   +1 more source

A deep dive into the morphokinetics and ploidy of low-quality blastocysts

open access: yesF&S Reports, 2022
Objective: To describe morphokinetic parameters and ploidy among low-quality blastocysts not meeting the criteria for clinical use. Design: Prospective cohort study. Setting: Academic medical center.
Molly M. Quinn, M.D.   +4 more
doaj   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

open access: yesExperimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

Abnormal cleavage patterns in equine in vitro‐produced embryos lead to higher early pregnancy loss

open access: yesEquine Veterinary Journal, Volume 58, Issue 4, Page 970-980, July 2026.
Summary Background Despite significant advances, in vitro production (IVP) of equine embryos continues to lack standardised embryo classification criteria and is associated with increased rates of early pregnancy loss compared with in vivo‐derived blastocysts.
Soledad Martin‐Pelaez   +6 more
wiley   +1 more source

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