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Hypothyroidism Alters Uterine Kisspeptin System and Activity Modulators in Cyclic Rats.
Int J Mol Sci
January 2025
Electron Microscopy Center, Department of Biological Sciences, State University of Santa Cruz, Ilheus 45662-900, Brazil.
Hypothyroidism causes ovarian dysfunction and infertility in women and animals and impairs the hypothalamic expression of kisspeptin (Kp). However, kisspeptin is also expressed in the genital system, and the lack of the Kp receptor (Kiss1r) in the uterus is linked to reduced implantation rates. This study investigated the impact of hypothyroidism on the uterine expression of Kp and Kiss1r in female rats throughout the estrous cycle and the associated changes in uterine activity modulators.
View Article and Find Full Text PDFThe Effect of Autologous Platelet Rich Plasma on Endometrial Receptivity: A Narrative Review.
Medicina (Kaunas)
January 2025
Faculty of Medicine, University of Niš, Blvd. Dr Zoran Đinđić 81, 18000 Niš, Serbia.
: Autologous platelet-rich plasma (PRP) transfusions are a relatively new treatment method used in different fields of medicine, including the field of reproductive medicine. One of the applications of these concentrated platelet infusions is the treatment of endometrial receptivity, which is a key factor for embryo implantation. There are implications that PRP infusions can lead to increased endometrial thickness, endometrial receptivity, and significantly elevated clinical pregnancy rates.
View Article and Find Full Text PDFEndometrial Receptivity-Lessons from "Omics".
Biomolecules
January 2025
Department of Obstetrics, Gynaecology and Newborn Health, University of Melbourne, Melbourne, VIC 3052, Australia.
The window of implantation (WOI) is a critical phase of the menstrual cycle during which the endometrial lining becomes receptive and facilitates embryo implantation. Drawing on findings from various branches of "omics", including genomics, epigenomics, transcriptomics, proteomics, lipidomics, metabolomics, and microbiomics, this narrative review aims to (1) discuss mechanistic insights on endometrial receptivity and its implication in infertility; (2) highlight advances in investigations for endometrial receptivity; and (3) discuss novel diagnostic and therapeutic strategies that may improve reproductive outcomes.
View Article and Find Full Text PDFBlastocyst-Derived Lactate as a Key Facilitator of Implantation.
Biomolecules
January 2025
Melbourne IVF, East Melbourne, VIC 3002, Australia.
The blastocyst develops a unique metabolism that facilitates the creation of a specialized microenvironment at the site of implantation characterized by high levels of lactate and reduced pH. While historically perceived as a metabolic waste product, lactate serves as a signaling molecule which facilitates the invasion of surrounding tissues by cancers and promotes blood vessel formation during wound healing. However, the role of lactate in reproduction, particularly at the implantation site, is still being considered.
View Article and Find Full Text PDFNitrate-Nitrite-Nitric Oxide Pathway, Oxidative Stress, and Fertility Outcomes in Morbidly Obese Women Following Bariatric Surgery: A Systematic Review.
Biomedicines
December 2024
1st Department of Obstetrics and Gynecology, Alexandra General Hospital, National and Kapodistrian University of Athens, 80 Vasilissis Sofias Avenue, 11528 Athens, Greece.
Obesity reduces nitric oxide (NO) production due to endothelial nitric oxide synthase (eNOS) dysfunction, resulting in oxidative stress, mitochondrial dysfunction, and chronic inflammation. These factors have a negative impact on reproductive health, including oocyte quality, endometrial receptivity, and embryo implantation. When oxidative stress affects eNOS function, the nitrate-nitrite-nitric oxide (NO-NO-NO) pathway provides an alternate route for NO production.
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