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Objective: Patients experiencing an intracranial hemorrhage (ICH) on oral anticoagulants often require rapid reversal. This study evaluated patients taking factor Xa inhibitors or warfarin that received reversal with 4-factor prothrombin complex concentrate (4F-PCC) for an ICH. The objective of the study was to determine if the efficacy of 4F-PCC for the reversal of factor Xa inhibitors is noninferior to its use in warfarin reversal in patients with ICH.
Methods: This was a retrospective, single center, noninferiority trial. Patients presenting to the emergency department with ICH were divided into two cohorts: those taking factor Xa inhibitors versus those taking warfarin. In each cohort, patients received anticoagulation reversal with weight-based 4F-PCC. The primary endpoint was hemostatic efficacy defined as ≤20% expansion in hematoma volume on repeat computed tomography imaging. A pre-specified noninferiority margin of -10% was selected to evaluate the difference between groups for the primary endpoint.
Results: A total of 221 patients were included in the study (factor Xa inhibitors, n = 87; warfarin, n = 134). Effective hemostasis was achieved in 70 patients (81%) on factor Xa inhibitors compared to 111 patients (83%) on warfarin, (-2.4% difference, [95% confidence interval, -12.87 to 8.12]; p = 0.654). There was no statistically significant difference between groups with regards to the primary outcome; however, the use of 4F-PCC in factor Xa inhibitor reversal was not noninferior when compared to 4F-PCC use for warfarin reversal. Hospital length of stay and discharge disposition were similar between cohorts.
Conclusions: The efficacy of 4F-PCC in reversing factor Xa inhibitor-related ICH compared to warfarin-related ICH was not significantly different between groups; however, these results did not prove noninferiority. Further study is warranted to delineate 4F-PCC's role in reversing factor Xa inhibitors in patients with ICH.
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http://dx.doi.org/10.1016/j.ajem.2022.04.044 | DOI Listing |
Proc Natl Acad Sci U S A
September 2025
State Key Laboratory of Bioactive Molecules and Druggability Assessment, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug De
Proliferative retinopathy is a leading cause of irreversible blindness in humans; however, the molecular mechanisms behind the immune cell-mediated retinal angiogenesis remain poorly elucidated. Here, using single-cell RNA sequencing in an oxygen-induced retinopathy (OIR) model, we identified an enrichment of sorting nexin (SNX)-related pathways, with SNX3, a member of the SNX family that is involved in endosomal sorting and trafficking, being significantly upregulated in the myeloid cell subpopulations of OIR retinas. Immunostaining showed that SNX3 expression is markedly increased in the retinal microglia/macrophages of mice with OIR, which is mainly located within and around the neovascular tufts.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
September 2025
Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance, University of Tsukuba, Tsukuba 305-8577, Japan.
All organisms are exposed to various stressors, which can sometimes lead to organismal death, depending on their intensity. While stress-induced organismal death has been observed in many species, the underlying mechanisms remain unclear. In this study, we investigated the molecular mechanisms of stress-induced organismal death in the fruit fly .
View Article and Find Full Text PDFJ Thromb Thrombolysis
September 2025
Central Laboratory of Yongchuan Hospital, Chongqing Medical University, No. 439, Xuanhua Road, Yongchuan District, Chongqing, 402160, China.
In vitro assessment of the inhibitory effect of antiplatelet drugs on platelet aggregation is frequently employed to guide personalized antiplatelet therapy in clinical practice. However, existing methods for detecting platelet aggregation rely heavily on high concentrations of exogenous agonists, which may obscure part of the inhibitory effect of antiplatelet drugs and lead to an underestimation of their effects. This study validates a novel analytical strategy for evaluating the effects of antiplatelet drugs by quantifying the microscopic three-dimensional morphological parameters of platelet aggregates formed through spontaneous aggregation on a glass surface.
View Article and Find Full Text PDFNaunyn Schmiedebergs Arch Pharmacol
September 2025
Department of Hematology, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, 518107, China.
Immune checkpoint inhibitors (ICIs) have revolutionized cancer therapy but are increasingly linked to immune-related kidney injury (irKI). This study presents the first bibliometric analysis of irKI research (2000-2025), aiming to identify key trends, mechanistic insights, and pharmacological risk factors. We analyzed 2,179 publications to understand the evolution of irKI research, focusing on areas like T cell-mediated tubular injury, immune system-driven inflammation, and changes in metabolism.
View Article and Find Full Text PDFTree Physiol
September 2025
Pollen Biotechnology of Crop Plants Group, Margarita Salas Center of Biological Research, CIB-CSIC, Ramiro de Maeztu 9, 28040, Madrid, Spain.
Somatic embryogenesis (SE) is an in vitro mass propagation system widely employed in plant breeding programs. However, its efficiency in many forest species remains limited due to their recalcitrance. SE relies on the induction of somatic cell reprogramming into embryogenic pathways, a process influenced by transcriptomic changes regulated, among other factors, by epigenetic modifications such as DNA methylation, histone methylation, and histone acetylation.
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