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Effects of endometrial embryokines on the preimplantation bovine embryo to create a gene expression signature consistent with a high competence phenotype†.
Biol Reprod
January 2025
Department of Animal Sciences, University of Florida, Gainesville, FL 32611-0910, USA.
Optimal embryonic development depends upon cell-signaling molecules released by the maternal reproductive tract called embryokines. Identity of specific embryokines that enhance competence of the embryo for sustained survival is largely lacking. The current objective was to evaluate effects of three putative embryokines in cattle on embryonic development to the blastocyst stage.
View Article and Find Full Text PDFCorrelation among blastocoel fluid DNA level, apoptotic genes expression and preimplantation aneuploidy.
Reprod Fertil
January 2025
M Bazrgar, Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran., Tehran, Iran (the Islamic Republic of).
It is believed that aneuploid embryos release cell-free DNA (cfDNA) into the blastocyst cavity during the self-correction process through the apoptotic mechanism. This study aimed to develop less invasive methods for predicting ploidy status by investigating how ploidy status affects blastocoel fluid DNA (BF-DNA) levels and apoptotic gene expression as indicators of embryo viability. Human blastocysts were classified into three groups; Survivable Embryo (SE), Fatal Single and double Aneuploidy (FSDA), and Multiple Aneuploidy (MA) using array comparative genomic hybridization (array-CGH) by trophectoderm (TE) biopsy.
View Article and Find Full Text PDFImpact of salpingectomy on the risk and characteristics of ectopic pregnancy after IVF/ICSI in patients with ectopic pregnancy history: A large retrospective cohort study.
Acta Obstet Gynecol Scand
January 2025
Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China.
Introduction: Ectopic pregnancy (EP) is a serious clinical gynecological emergency. Patients with EP history are at higher risk of EP resulting from IVF/ICSI (IVF-EP). Besides, studies have suggested that previous EP treatments may affect the incidence of IVF-EP.
View Article and Find Full Text PDFPrimitive to visceral endoderm maturation is essential for mouse epiblast survival beyond implantation.
iScience
January 2025
Mammalian Embryo and Stem Cell Group, University of Cambridge, Department of Physiology, Development and Neuroscience, Downing Street, Cambridge CB2 3DY, UK.
The implantation of the mouse blastocyst initiates a complex sequence of tissue remodeling and cell differentiation events required for morphogenesis, during which the extraembryonic primitive endoderm transitions into the visceral endoderm. Through single-cell RNA sequencing of embryos at embryonic day 5.0, shortly after implantation, we reveal that this transition is driven by dynamic signaling activities, notably the upregulation of BMP signaling and a transient increase in Sox7 expression.
View Article and Find Full Text PDFReactive oxygen species attenuation improves the quality of vitrified-warmed bovine embryos.
Anim Reprod
January 2025
Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil.
The aim of this study was to investigate the effects of modulating reactive oxygen species (ROS) in vitrified bovine in vitro produced (IVP) embryos. In experiment I we compared ROS production in fresh and vitrified-warmed blastocysts. In experiment II we evaluated the effects of antioxidant supplementation (100 μM of 2-mercaptoethanol; BME; 0 h to 2 h during warming) on ROS levels in vitrified-warmed blastocysts, and in experiment III we compared the development of fresh and vitrified-warmed blastocysts in the presence (BME) or absence (Control) of antioxidant (100 μM BME; 0 h to 48 h during warming).
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