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Use of Oral and Intravenous Tranexamic Acid in Total Knee Arthroplasty and Total Hip Arthroplasty Procedures.
Cureus
December 2024
General Orthopedics, Midwest Bone and Joint Center, Macon, USA.
Introduction: Tranexamic acid (TXA) is an antifibrinolytic drug commonly used in total knee arthroplasty (TKA). Intravenous (IV) and topical TXA therapy have been extensively studied and shown to reduce blood loss, length of hospital stay, and blood transfusion rates following TKA. Despite the extensive literature regarding IV and topical TXA in orthopedics, there is a current dearth of studies analyzing oral usage.
View Article and Find Full Text PDFSmall molecule inhibits KCNQ channels with a non-blocking mechanism.
Nat Chem Biol
January 2025
Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China.
Voltage-gated ion channels (VGICs) are crucial targets for neuropsychiatric therapeutics owing to their role in controlling neuronal excitability and the established link between their dysfunction and neurological diseases, highlighting the importance of identifying modulators with distinct mechanisms. Here we report two small-molecule modulators with the same chemical scaffold, Ebio2 and Ebio3, targeting a potassium channel KCNQ2, with opposite effects: Ebio2 acts as a potent activator, whereas Ebio3 serves as a potent and selective inhibitor. Guided by cryogenic electron microscopy, patch-clamp recordings and molecular dynamics simulations, we reveal that Ebio3 attaches to the outside of the inner gate, employing a unique non-blocking inhibitory mechanism that directly squeezes the S6 pore helix to inactivate the KCNQ2 channel.
View Article and Find Full Text PDFLive cell imaging of plant infection provides new insight into the biology of pathogenesis by the rice blast fungus Magnaporthe oryzae.
J Microsc
January 2025
The Sainsbury Laboratory, University of East Anglia, Norwich, UK.
Magnaporthe oryzae is the causal agent of rice blast, one of the most serious diseases affecting rice cultivation around the world. During plant infection, M. oryzae forms a specialised infection structure called an appressorium.
View Article and Find Full Text PDFTraditional vs. modified Ringer lactate-based del Nido cardioplegia impacts on clinical outcomes in patients undergoing coronary artery bypass grafting: Results from a prospective, randomized, blinded trial.
J Extra Corpor Technol
December 2024
Physiology Research Center, Iran University of Medical Sciences, Tehran 1449614535, Iran.
Introduction: Myocardial protection with cardioplegia is a crucial approach to mitigate myocardial damage during coronary bypass grafting surgery (CABG) with cardiopulmonary bypass (CPB). The major component of the del Nido cardioplegia solution, Plasma-Lyte A, is difficult to obtain in Iran due to high cost. The objective of the current study was to study if the lactated Ringer's solution as the base for del Nido solution (LR DN) usage is a viable option as a substitute for Plasma-Lyte A in adult patients presenting for CABG surgery.
View Article and Find Full Text PDFAnterior C2 Odontoid Fixation Using Cranial Brainlab Navigation: A Novel Approach and Case Report.
Cureus
November 2024
Neurosurgery, Hamad General Hospital, Doha, QAT.
Instrumentation of the cervical spine particularly at the higher cervical levels like C2 presents unique challenges mainly because of their complex anatomy and proximity to neurovascular structures. The goal of the article is to demonstrate that using navigation technologies in inserting anterior odontoid screws can enhance the precision and safety of surgery. We describe a novel approach for anterior C2 odontoid fixation using a three-pin radiolucent Mayfield clamp with intra-operative CT registration and cranial brainlab navigation.
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