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Comparative Analysis of Controlled Ovarian Hyperstimulation and Modified Natural Cycle Protocols on Gene Expression and Quality of Oocytes, Zygotes, and Embryos in Assisted Reproductive Technology (ART).
Int J Mol Sci
December 2024
Faculty of Biotechnology and Drug Development, University of Rijeka, HR-51000 Rijeka, Croatia.
This study investigated the influence of two in vitro fertilization (IVF) protocols-controlled ovarian hyperstimulation (COH) and a modified natural cycle protocol-on gene expression levels (Anti-Müllerian Hormone (), Anti-Müllerian Hormone Receptor Type 2 (), Follicle-Stimulating Hormone Receptor (), and Androgen Receptor ()) and the subsequent reproductive outcomes of assisted reproductive technology (ART). Gene expression, as well as oocyte, zygote, and embryo morphological parameters, were analyzed to evaluate the differences between the protocols. Our findings show that expression was significantly associated with successful fertilization, while expression correlated with improved embryo transfer outcomes.
View Article and Find Full Text PDFLH level on trigger day, number of follicles ≥16 mm but <18 mm, and number of retrieved oocytes are independent risk factors for polyspermy in gonadotropin-releasing hormone antagonist protocol.
Front Endocrinol (Lausanne)
January 2025
Department of Reproductive Health and Infertility, Zigong Maternal and Child Health Hospital, Zigong, Sichuan, China.
Introduction: The polyspermy rate is a quality control indicator in the embryology laboratory, and factors affecting polyspermy are of great interest. The gonadotropin-releasing hormone (GnRH) antagonist protocol is currently the mainstream protocol in most reproductive centers. This study explored the factors influencing polyspermy in fertilization (IVF) using the GnRH antagonist protocol and considered corresponding improvement measures.
View Article and Find Full Text PDFMedical therapy to treat obesity and optimize fertility in women of reproductive age: a narrative review.
Reprod Biol Endocrinol
January 2025
Departments of Internal Medicine and Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, 330 Cedar St, New Haven, CT, 06510, USA.
Background: Overweight and obesity-chronic illnesses in which an increase in body fat promotes adipose tissue dysfunction and abnormal fat mass resulting in adverse metabolic, biomechanical, and psychosocial health consequences-negatively impact female fertility. Adverse conception outcomes are multifactorial, ranging from poor oocyte quality and implantation issues to miscarriages and fetal health issues. However, with the advent of novel pharmacologic agents, significant weight loss can be achieved, improving the chances of healthy pregnancies, and their use should be considered during periconceptual counseling.
View Article and Find Full Text PDFThe impact of the trigger day progesterone, luteinizing hormone and their interaction on live birth rates in GnRH antagonist cycles.
J Obstet Gynaecol Res
January 2025
Department of Obstetrics and Gynecology, Health Sciences University, Tepecik Education and Research Hospital, Izmir, Turkey.
Aim: This study aims to assess the impacts of various trigger day progesterone (P) and luteinizing hormone (LH) levels on live birth rates (LBRs) in fresh in vitro fertilization (IVF) cycles, considering their elevation from stimulation and premature luteinization.
Methods: This retrospective cohort study included the first ovarian stimulation cycles with GnRH antagonist protocol of 1253 patients who underwent intracytoplasmic sperm injection and fresh embryo transfer at a tertiary clinic's IVF center between 2010 and 2016. Participants were divided into four groups based on trigger day serum P and LH levels, using the 90th percentile thresholds for P (1.
IGF2BP3 curbed by miR-15c-3p restores disrupted lipid storage and progesterone secretion in chicken granulosa cells under oxidative stress through AKT-Raf1-ERK1/2 signaling pathway.
Poult Sci
December 2024
State Key Laboratory of Swine and Poultry Breeding Industry, Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, and Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China. Electronic address:
For commercial laying hens, the continuous high-intensity ovulation process leads to a significant accumulation of reactive oxygen species (ROS) in the granulosa cells, inducing oxidative stress, which accelerates ovarian aging and shortens the peak laying period. The molecular mechanisms underlying this process remain poorly understood. Therefore, we modeled the processes of oxidative stress and antioxidant in chicken granulosa cells.
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