Objective: The purpose of this study was to enrich vasoactive factors that are present in the plasma of women with preeclampsia by the application of sequential fractionation and determination of the activity of each fraction in a bioassay.
Study Design: Pooled plasma from women with preeclampsia (n = 23) and matched control subjects (n = 23) was subjected to fractionation with ultrafiltration, targeted immunodepletion, or size exclusion chromatography. Myometrial arteries that were isolated from healthy cesarean section biopsy specimens (n = 28) were incubated with plasma fractions (2%, volume/volume), and their endothelial function was assessed by wire myography.
Results: Incubation of arteries with preeclampsia plasma or immunodepleted preeclampsia plasma had a deleterious effect on endothelial-dependent relaxation. Bioactivity of the plasma factors was absent in all fractions after either plasma ultrafiltration or separation with the use of size exclusion chromatography; however, activity was restored after recombination of these fractions.
Conclusion: This study provides the first conclusive evidence that multiple synergistic factors, with a combined vasoactive effect, are present in the plasma of women with preeclampsia.
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http://dx.doi.org/10.1016/j.ajog.2006.10.875 | DOI Listing |
Best Pract Res Clin Anaesthesiol
December 2023
Department of Anesthesia and Pain Management, Sinai Health System, Women's College Hospital, University Health Network, Toronto, Ontario, Canada; Department of Anesthesiology and Pain Medicine, University of Toronto, Toronto, Ontario, Canada; Peter Munk Cardiac Centre, University Health Network, Toronto, Ontario, Canada; Interdepartmental Division of Critical Care, Department of Medicine, University of Toronto, Toronto, Ontario, Canada.
Goal-directed administration of blood components including red cells, platelets, plasma, and factor concentrates plays a critical role in the management of intraoperative coagulopathy. Increasingly commonly used, purified and recombinant factor concentrates are being recognized for their logistical advantages and potentially superior efficacy. Three- and four-factor prothrombin concentrates, fibrinogen concentrates and activated factor VII have an evolving evidence base relative to frozen plasma and cryoprecipitate.
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January 2025
Department of Experimental and Clinical Pharmacology, University of Minnesota, Minneapolis, Minnesota, USA.
Background: Lamotrigine clearance can change drastically in pregnant women with epilepsy (PWWE) making it difficult to assess the need for dosing adjustments. Our objective was to characterize lamotrigine pharmacokinetics in PWWE during pregnancy and postpartum along with a control group of nonpregnant women with epilepsy (NPWWE).
Methods: The Maternal Outcomes and Neurodevelopmental Effects of Antiepileptic Drugs (MONEAD) study was a prospective, observational, 20 site, cohort study conducted in the United States (December 2012 and February 2016).
World J Clin Cases
January 2025
Department of Gastroenterology, Laiko General Hospital, National and Kapodistrian University of Athens, Athens 11527, Greece.
Machine learning (ML) is a type of artificial intelligence that assists computers in the acquisition of knowledge through data analysis, thus creating machines that can complete tasks otherwise requiring human intelligence. Among its various applications, it has proven groundbreaking in healthcare as well, both in clinical practice and research. In this editorial, we succinctly introduce ML applications and present a study, featured in the latest issue of the .
View Article and Find Full Text PDFHosp Pharm
January 2025
Vascular Medicine, Prairie Cardiovascular Institute Springfield, Springfield, IL, USA.
Drug-induced hypertension, though rare, often presents diagnostic challenges, particularly when the causative drug is not typically associated with hypertension. We describe a case involving a 55-year-old woman who presented with anxiety, confusion, and significantly high blood pressure unresponsive to standard treatments. Despite increasing medication doses, her blood pressure remained poorly controlled, leading to an investigation for secondary causes.
View Article and Find Full Text PDFHematology
December 2025
Cellular Therapy & Transplantation Program, Hopital Maisonneuve-Rosemont, Universite de Montreal, Montreal, Quebec, Canada.
Umbilical cord blood (UCB) represents a valuable graft source in the absence of a human leukocyte antigen (HLA)-matched donor for hematopoietic cell transplantation (HCT). Donor-specific anti-HLA antibodies (DSAs), targeting grafts with mismatched HLA antigens, pose a significant obstacle by increasing the risk of primary graft failure, delayed engraftment, and decreased survival. Existing literature on HLA desensitization has primarily focused on haploidentical transplants, and there is a lack of experience regarding the optimal strategy in UCB transplantation.
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