The pathogenesis of preterm birth (PTB) is largely unknown and the endocrine stress pathway is likely to participate in the mechanisms allowing onset of labor. However, the vast majority of the studies evaluating psychosocial distress denied an association with PTB. Uterine contractility rather than PTB seems associated with distress in pregnancy.
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http://dx.doi.org/10.3109/09513590.2012.652437 | DOI Listing |
Pol J Vet Sci
September 2024
Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-718 Olsztyn, Poland.
This study analysed the influence of montelukast (MON), a cysteinyl leukotriene receptor antagonist, and nifedipine, an L-type voltage-gated Ca2+ channel blocker, on the contractility of the porcine uterine smooth muscle. Myometrial strips were collected from the sexually immature (n=8), cyclic (12-14 days of the oestrous cycle; n=8) and pregnant (27-28 days of pregnancy; n=8) gilts and stimulated with a) MON or nifedipine at concentrations of 10-8-10-4 M and b) increasing concentrations of nifedipine after previous administration of MON at a concentration of 10-4 M. The changes in the tension, amplitude and frequency of contractions were determined with the Hugo Sachs Elektronik equipment for measuring isometric contractions.
View Article and Find Full Text PDFTher Adv Reprod Health
December 2024
Department of Obstetrics and Gynecology, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China.
Background: Chronic endometritis (CE), frequently asymptomatic, is associated with female infertility. Fallopian tube obstruction (FTO) is also one of the factors contributing to female infertility. More than 90% of cases of proximal FTO can be successfully treated after fallopian tubal recanalization (FTR) and the spontaneous pregnancy rate of treated women after FTR is only about 30%.
View Article and Find Full Text PDFJAMA Netw Open
December 2024
Center of Excellence in Maternal, Child and Adolescent Health, University of California, Berkeley.
Importance: With disparate Black maternal health outcomes in the US and a steadily expanding non-US-born Black population, it is beneficial to investigate Black maternal health outcomes by country of origin.
Objective: To compare the prevalence of maternal morbidity and infant birth outcomes between US-born and non-US-born Black populations in the US.
Design, Setting, And Participants: This cross-sectional study included all registered hospital births in the US from the 2021 National Vital Statistics Systems (NVSS) Natality Data.
Int J Numer Method Biomed Eng
January 2025
The Ferrara Center for Patient Safety and Clinical Simulation, New York Institute of Technology, College of Osteopathic Medicine, New York City, New York, USA.
The study findings demonstrate that the amniotic fluid plays an important role in protecting the fetus during convulsive maternal seizures. The amniotic fluid was found to be an effective buffer, significantly reducing the transfer of kinetic energy to the fetus during these events. This highlights the sufficient protection provided by the amniotic fluid in such circumstances.
View Article and Find Full Text PDFObstet Gynecol
December 2024
Centre for Longitudinal Studies, Social Research Institute, University College London, London, United Kingdom; Population Science, Huntsman Cancer Institute, the Department of Family and Consumer Studies, the Department of Obstetrics and Gynecology, and the Spencer Fox Eccles School of Medicine, University of Utah, Salt Lake City; Max Planck Institute for Demographic Research, Rostock, Germany; the Helsinki Institute for Demography and Population Health, University of Helsinki, Helsinki, Finland; and the Max Planck - University of Helsinki Center for Social Inequalities in Population Health, Rostock, Germany and Helsinki, Finland.
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