Objective: It is thought that oxidative stress, free radicals, reactive oxygen species and reactive nitrogen species affect the pathophysiology of coronavirus disease-2019 (COVID-19). This study aimed to evaluate the oxidative status in pregnant patients with COVID-19 infection according to the changes seen in the levels of maternal serum thiol-disulfide and ischemia-modified albumin (IMA).
Materials And Methods: A study group was formed of 40 pregnant women with confirmed COVID-19 infection (study group) and a control group of 40 healthy pregnant women with no risk factors determined. In this prospective, case-controlled study, analyses were made of the maternal serum native thiol, total thiol, disulfide, IMA, and disulfide/native thiol concentrations.
Results: The maternal serum native thiol and total thiol concentrations in the study group were determined to be statistically significantly lower (p=0.007 and p=0.006, respectively), and the disulfide/native thiol ratio was higher but not to a level of statistical significance (p=0.473). There was no difference between the two groups regarding IMA levels (p=0.731).
Conclusion: The thiol-disulfide balance was seen to shift in the oxidant direction in pregnancies with COVID-19, which might support the view that ischemic processes play a role in the etiopathogenesis of this novel disease.
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http://dx.doi.org/10.4274/tjod.galenos.2022.72929 | DOI Listing |
PLoS One
January 2025
Laboratory of Veterinary Biochemistry, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido, Japan.
Hand-rearing of marine mammals is an essential technique for the husbandry of orphans in captivity or the wild, especially endangered cetacean species. The purpose of the present study was to establish a method for successful hand-rearing and evaluate the nutritional state of neonatal finless porpoises. Two neonate finless porpoises maternally neglected at 5 days of age (Day 5) (neonate A, animal A) and Day 4 (neonate B, animal B) were hand reared.
View Article and Find Full Text PDFEnviron Sci Technol
January 2025
Guangdong Key Laboratory of Environmental Pollution and Health, College of Environment and Climate, Jinan University, Guangzhou 510632, China.
Prenatal exposure to per- and polyfluoroalkyl substances (PFASs) has been linked to adverse fetal growth and development. However, most evidence was generated based on the singleton pregnancy studies, whereas potential impact on twin fetuses remains largely unknown. This study aimed to explore the associations of prenatal PFAS exposure with the growth and developmental differences within twin pairs by investigating 162 twin newborns and their mothers and determining 19 PFASs in maternal serum during the first, second, and third trimesters and cord serum of twins.
View Article and Find Full Text PDFJ Matern Fetal Neonatal Med
December 2025
Department of Obstetrics, Perinatology and Neonatology, Center of Postgraduate Medical Education, Warsaw, Poland.
Introduction: Small-for-gestational age (SGA) newborns are at increased risk of adverse neonatal outcomes and the risk is related to the etiology of growth restriction: highest in placental insufficiency, lowest in constitutional SGA. The aim of this study was to investigate if placental growth factor (PlGF), soluble fms-like tyrosine kinase-1(sFlt-1) or sFlt-1/PlGF ratio are efficient in prediction of adverse neonatal outcomes in SGA newborns delivered ≥34 weeks of gestation.
Methods: A prospective observational multicenter cohort study was performed.
BMJ
January 2025
State Key Laboratory of Reproductive Medicine and Offspring Health, Centre for Reproductive Medicine, Institute of Women, Children and Reproductive Health, Shandong University, Jinan, China
Objective: To test the hypothesis that a freeze-all strategy would increase the chance of live birth compared with fresh embryo transfer in women with low prognosis for in vitro fertilisation (IVF) treatment.
Design: Pragmatic, multicentre, randomised controlled trial.
Setting: Nine academic fertility centres in China.
J Clin Endocrinol Metab
January 2025
Department of Obstetrics and Gynecology, Women and Children's Hospital of Chongqing Medical University (Chongqing Health Center for Women and Children), Chongqing, China.
Context: PCOS pregnancies are linked to metabolic disorders affecting maternal and fetal outcomes, with maternal metabolites differing from those in normal pregnancies.
Objective: To investigate the metabolic communication at the maternal-fetal interface in PCOS pregnancies.
Design: Placenta and umbilical cord serum were analyzed using gas chromatography-mass spectrometry.
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