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Optimising Luteinising Hormone Levels on Trigger Day for Improved Ovarian Response and Pregnancy Outcomes in Gonadotropin-Releasing Hormone Antagonist Protocols: A Retrospective Cohort Study.
BJOG
January 2025
Department of Obstetrics and Gynecology, Center for Reproductive Medicine, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, Guangdong-Hong Kong-Macao Greater Bay Area Higher Education Joint Laboratory of Maternal-Fetal Medicine, The Third Affiliated Hospital, Guangzhou Medical University, Guangzhou, China.
Objective: To determine the optimal luteinising hormone (LH) level on the trigger day and its impact on pregnancy outcomes in gonadotropin-releasing hormone (GnRH) antagonist protocols using a data-driven approach.
Design: Retrospective cohort study.
Setting: Third Affiliated Hospital of Guangzhou Medical University.
A Statistical Model to Predict Protection Against Infant Respiratory Syncytial Virus Disease Through Maternal Immunization.
Vaccines (Basel)
November 2024
Vaccine Research and Development, Pfizer Inc., Pearl River, NY 10965, USA.
Background/objectives: Respiratory syncytial virus (RSV) is the leading cause of severe respiratory disease in infants worldwide. Maternal immunization to protect younger infants is supported by evidence that virus-neutralizing antibodies, which are efficiently transferred across the placenta from mother to fetus, are a primary immune mediator of protection. In maternal RSV vaccine studies, estimates of correlates of protection are elusive because many factors of maternal-fetal immunobiology and disease characteristics must be considered for the estimates.
View Article and Find Full Text PDFCost-Effective Bioimpedance Spectroscopy System for Monitoring Syncytialization In Vitro: Experimental and Numerical Validation of BeWo Cell Fusion.
Micromachines (Basel)
December 2024
Department of Mechanical Engineering, University of Ottawa, Ottawa, ON K1N 6N5, Canada.
The placenta plays a critical role in nutrient and oxygen exchange during pregnancy, yet the effects of medicinal drugs on this selective barrier remain poorly understood. To overcome this, this study presents a cost-effective bioimpedance spectroscopy (BIS) system to assess tight junction integrity and monolayer formation in BeWo b30 cells, a widely used model of the multinucleated maternal-fetal exchange surface of the placental barrier. Cells were cultured on collagen-coated porous membranes and treated with forskolin to induce controlled syncytialization.
View Article and Find Full Text PDFPregnancy and Nursing Management for Embryo-Transferred and Genetically Modified Rabbits.
J Vis Exp
December 2024
Guangdong Medical Laboratory Animal Center, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University;
With the advancement of scientific research, the demand for gene-edited rabbit models is increasing. However, there are limited pregnancy and feeding management systems for gene-edited rabbits, leading to low survival rates among gene-edited rabbits prepared by many inexperienced researchers. Therefore, proper guidance is essential.
View Article and Find Full Text PDFThe risk of severe outcomes of influenza increases during pregnancy. Whether vaccine-induced T cell memory-primed prepregnancy retains the ability to mediate protection during pregnancy, when systemic levels of several hormones with putative immunomodulatory functions are increased, is unknown. Here, using murine adoptive transfer systems and a translationally relevant model of cold-adapted live-attenuated influenza A virus vaccination, we show that preexisting virus-specific memory T cell responses are largely unaltered and highly protective against heterotypic viral challenges during pregnancy.
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