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Correlation 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 PDFEvaluation of utilization of amplified blastocoel fluid DNA gel electrophoresis band intensity as an additional minimally invasive approach in embryo selection: A cross-sectional study.
Int J Reprod Biomed
November 2024
Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran.
Background: Embryo selection for transfer is critical in assisted reproduction. The presence of DNA in the blastocoel cavity of human blastocysts is assumed to be a consequence of common preimplantation chromosomal abnormalities.
Objective: This study examined the relationship between the amount of blastocoel fluid (BF) DNA and the band intensity of amplified BF-DNA in gel electrophoresis, considering the influence of ploidy status.
The Identification of Molecular Ploidy Status of Abnormal Pronuclear Zygotes Reveals a Significant Number of Euploid Blastocysts Available for Conception.
Biomedicines
December 2024
CCRM Genetics, 10290 Ridgegate Circle, Lone Tree, CO 80124, USA.
Abnormally fertilized embryos are often discarded during in vitro fertilization due to the fact that known chromosomal ploidy abnormalities lead to implantation failure or pregnancy loss. The objective of this study was to determine if pronuclear numeration (PN) observed at fertilization check is representative of the true ploidy status of the subsequent developing blastocyst in order to maximize the number of viable embryos available for infertility patients and increase their chances of conception. Upon successful fertilization, pronuclear numeration was noted, and zygotes were cultured to the blastocyst stage.
View Article and Find Full Text PDFEffects of Exosome miR-494 on Proliferation, Migration, and Invasion of Trophoblastic Cells by Regulating the PTEN/PI3K/Akt Pathway.
Ann Clin Lab Sci
November 2024
Department of Pathology, Dongguan Maternal and Child Health Care Hospital, Dongguan, Guangdong, China.
Objective: To investigate the effects of the exosomal miR-494 targeting phospholipinositol 3-kinase (PI3K)/protein kinase B (AKT)/rapamycin target protein (mTOR) pathway on proliferation, migration, and invasion of trophoblast cells.
Methods: Decidual macrophages were randomly divided into control group, mimic NC group, miR-494 mimic group, inhibitor NC group, and miR-494 inhibitor group. Each group was transfected with corresponding miR-494 mimic NC, miR-494 mimic, and inhibitor NC and miR-494 inhibitor, while the cells of control group were only replaced with fresh medium.
A randomized controlled trial comparing embryo vitrification with slush nitrogen to liquid nitrogen in women undergoing frozen embryo transfer: embryology and clinical outcomes.
Hum Reprod
January 2025
IVIRMA Global Research Alliance, IVIRMA New Jersey, Basking Ridge, NJ, USA.
Study Question: Does the use of slush nitrogen (SN) for embryo vitrification improve embryo transfer outcomes compared to liquid nitrogen (LN)?
Summary Answer: SN is a safe method for embryo preservation and significantly improves post-warming survival rates during repeated vitrification-warming cycles; however, after a single freeze-thaw cycle, pregnancy outcomes are not improved when embryos are vitrified with SN compared to LN.
What Is Known Already: SN is a combination of solid and LN, with a temperature lower than regular LN, and it is an alternative to conventional LN in achieving a faster cooling speed. Studies have shown that SN improves survival in non-human embryos and human oocytes.
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