Scientific interest in the placenta derives not only from its enormous diversity of form and function but also from the unique metabolic, endocrine and immunologic properties. The steady increase in size and weight of the placenta throughout pregnancy has been investigated in the large number of studies. The data obtained from weighing the placenta vary considerably, depending upon how the placenta is prepared. If membranes and mass of the cord are left attached and adherent maternal blood clot is not removed, the weight is increased by nearly 50 percent. In our study we tried to asses the value of the feto-placental ratio and to correlate the weight of placenta with the other data obtained during pregnancy and labour and with outcome of pregnancy. A group of 1010 patients was assessed. The data obtained these patients were correlated with the length of pregnancy, the body weight of the baby and the status of the newborn estimated by Apgar score in 1 and 5 min. The feto-placental ratio was significantly affected by the length of pregnancy and the status of the newborn. Another comparisons were made with the medical illnesses during pregnancy, i. g. H--Gestosis, renal diseases and the cholestasis of pregnancy.
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Histochem Cell Biol
January 2025
Medical Histology and Cell Biology Department, Faculty of Medicine, Mansoura University, Mansoura, 35516, Egypt.
Gestational diabetes mellitus (GDM) significantly disrupts placental structure and function, leading to complications such as intrauterine growth restriction (IUGR) and preeclampsia. This study aimed to investigate the effects of GDM on placental histology, angiogenesis, and oxidative stress, as well as evaluate metformin's protective role in mitigating these changes. A total of 60 pregnant Sprague-Dawley rats were divided into four groups: control, metformin-treated, GDM, and GDM with metformin.
View Article and Find Full Text PDFPlacenta
January 2025
Department of Pediatrics, Research Institute of the McGill University Health Center, Montreal, Quebec, Canada. Electronic address:
Introduction: Group B Streptococcus (GBS) is an opportunistic pathogen that can induce chorioamnionitis (CA), increasing the risk of neurodevelopmental disorders (NDDs) in the offspring. The placenta facilitates maternal-fetal communication through the release of extracellular vesicles (EVs), which may carry inflammatory molecules such as interleukin (IL)-1. Although the role of EVs in immune modulation is well established, their specific characterization in the context of GBS-induced CA has not yet been investigated.
View Article and Find Full Text PDFEnviron Res
January 2025
Department of Epidemiology, NUTRIM School for Translational Research in Metabolism, Maastricht University Medical Centre, P.O. Box 616, 6200 MD Maastricht, The Netherlands. Electronic address:
Prenatal exposure to air pollution has been linked to lower birth weight, yet the role of the placenta in this association is often overlooked. This study investigates whether placental characteristics act as moderators or mediators in the association between prenatal exposure to particulate matter (PM) and nitrogen dioxide (NO) and birth weight in twins. The study included 3340 twins (born 2002-2013) from the East Flanders Prospective Twin Survey.
View Article and Find Full Text PDFLife Sci
January 2025
Studies of the Physiopathology of the ovary laboratory, Institute of Biology and Experimental Medicine (IBYME) - National Scientific and Technical Research Council (CONICET), Vuelta de Obligado 2490, C1428ADL Buenos Aires, Argentina. Electronic address:
Aims: Metformin has shown beneficial effects on reproduction in women. However, its use during pregnancy remains controversial, as metformin can cross the placenta. Most studies have focused on the metabolic impact on the offspring of treated mothers, with limited information regarding its reproductive effects.
View Article and Find Full Text PDFInflamm Res
January 2025
Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, No.127 Changle West Road, Xincheng District, Xi'an, 710032, Shaanxi, China.
Background: Hypertrophic scar (HS) is a severe skin fibrosis. Transplanting stem cells carrying anti-fibrotic cytokine genes, like interferon-gamma (IFN-γ), is a novel therapeutic strategy. Human amniotic epithelial cells (hAECs) are ideal seed cells and gene vectors.
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