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Generation of Bona Fide Human Induced Trophoblast Stem Cells by Direct Reprogramming of Term Umbilical Cord Cells.
Int J Mol Sci
December 2024
Reproductive Biology Laboratory, Amsterdam University Medical Center Location University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands.
Placentation disorders, including severe preeclampsia and fetal growth restriction, have their origins in early pregnancy, whereas symptoms typically present later on. To investigate the pathogenesis of these diseases, there is a need for a reliable in vitro model system of early placenta development with known pregnancy outcomes. Therefore, we optimized the generation of human induced trophoblast stem cells (iTSCs) from term umbilical cord, enabling non-invasive collection of patient-derived material immediately after birth.
View Article and Find Full Text PDFUmbilical Artery Thrombosis Masquerading as Single Umbilical Artery in a Stillbirth.
Diagnostics (Basel)
January 2025
Department of Pathology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia.
Umbilical artery thrombosis (UAT) masquerading as a single umbilical artery (SUA) is a rare but critical diagnostic challenge in prenatal care. We described a case of a 22-year-old primigravida with an uneventful obstetric history who presented with reduced fetal movements at 22 weeks of gestation. Ultrasound showed no gross fetal structural anomalies while umbilical artery Doppler flow imaging revealed an isolated SUA.
View Article and Find Full Text PDFEvaluation of cord management strategies in intrauterine growth-restricted infants: a systematic review and meta-analysis.
Eur J Pediatr
January 2025
Medical Research Group of Egypt, Negida Academy, Arlington, MA, USA.
Delayed cord clamping (DCC) has been widely adopted in both term and preterm infants to improve neonatal outcomes by increasing blood volume and supporting oxygenation. However, the optimal cord management for intrauterine growth-restricted (IUGR) infants is unclear. To systematically review and meta-analyze the effects of DCC compared to early cord clamping (ECC) in IUGR infants.
View Article and Find Full Text PDFPrognosis for fetuses with isolated severe growth retardation from 23 gestational weeks with an initial assessment unfavorable to an active management.
J Gynecol Obstet Hum Reprod
January 2025
Maternite´ Port-Royal, AP-HP, APHP, Centre-Universite´ de Paris, FHU PREMA, 123, Bd de Port-Royal, 75014 Paris, France.
Objective: To study perinatal outcomes for newborns with early, isolated, severe FGR, for whom initial active management was considered unreasonable or impossible at an obstetric-pediatric assessment and to identify the determinants associated with a course that made active management reasonable.
Material And Methods: This retrospective observational single-center study occurred in a level-3 university hospital maternity unit. It included all pregnancies with a singleton fetus presenting isolated FGR <3rd percentile at 23 weeks or more of gestation with an obstetric-pediatric assessment (OPA) initially unfavorable to active management.
Perivascular cells function as key mediators of mechanical and structural changes in vascular capillaries.
Sci Adv
January 2025
Knight Cancer Precision Biofabrication Hub, Knight Cancer Institute, OHSU, Portland, OR 97201, USA.
A hallmark of chronic and inflammatory diseases is the formation of a fibrotic and stiff extracellular matrix (ECM), typically associated with abnormal, leaky microvascular capillaries. Mechanisms explaining how the microvasculature responds to ECM alterations remain unknown. Here, we used a microphysiological model of capillaries on a chip mimicking the characteristics of healthy or fibrotic collagen to test the hypothesis that perivascular cells mediate the response of vascular capillaries to mechanical and structural changes in the human ECM.
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