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Enzyme-Inspired Single Selenium Site for Selective Oxygen Reduction.
Angew Chem Int Ed Engl
January 2025
State Key Laboratory of Physical Chemistry of Solids, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
Learning from nature has garnered significant attention in the scientific community for its potential to inspire creative solutions in material or catalyst design. The study highlights the design of a biomimetic single selenium (Se) site-modified carbon (C) moiety that retains the unique reactivity of selenoenzyme with peroxides, which plays crucial roles in selectively catalyzing the oxygen reduction reaction (ORR). The as-designed Se-C demonstrates nearly 100 % 4-electron selectivity, evidenced by 0.
View Article and Find Full Text PDFMicrovascular Shunts, Intracranial Pressure, and the Impact of Drag-Reducing Polymers.
Adv Exp Med Biol
October 2024
Department of Neurosurgery, University of New Mexico School of Medicine, Albuquerque, NM, USA.
Article Synopsis
- Edwin M. Nemoto reflects on his 50 years with ISOTT, highlighting the advancements in technologies like microelectrodes and near-infrared spectroscopy that have improved measurements of tissue oxygenation and metabolism.
- He cherishes the collaborations and scientific exchanges with notable researchers worldwide, considering these relationships as the most significant aspect of his experience.
- The text discusses the role of microvascular shunts in various organs that can worsen conditions like tissue injury and edema, describing how a specific drag-reducing polymer enhances blood flow and improves endothelial function by altering red blood cell dynamics.
A Novel Case of Anomalous Origin of Left Vertebral Artery Associated With Left Subclavian Steal Syndrome.
Cardiol Res
June 2024
Division of Interventional Cardiology, University of North Carolina Health at Southeastern, Lumberton, NC 28358, USA.
The subclavian steal syndrome (SSS) is defined by the reversal of flow in the ipsilateral vertebral artery in the setting of subclavian artery stenosis proximal to its origin. Here, we describe a rare case of left SSS with significant left subclavian artery stenosis associated with anomalous origin of the left vertebral artery (LVA) directly from the aortic arch in a patient presenting with signs of vertebrobasilar insufficiency and resolution of symptoms following angioplasty. Through this case, the authors try to emphasize the importance and the correct technique of using Doppler ultrasonography, and the importance of invasive angiography in understanding the mechanism of subclavian steal in patients with anomalous LVA origin.
View Article and Find Full Text PDFQuantification of steal flow on Doppler ultrasound in patients with arteriovenous graft for hemodialysis.
Vascular
May 2024
Department of Radiology and Research Institute, Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea.
Purpose: Arteriovenous fistula (AVF) is the preferred treatment for long-term hemodialysis patients to allow reliable vascular access. Arteriovenous graft (AVG) is monitored using Doppler sonography to check a vessel's condition and predict complications such as steal syndrome. In this study, we developed an analysis algorithm and method to quantify steal syndrome using Doppler sonography.
View Article and Find Full Text PDF[Analysis of the clinical characteristics of V4 segment steal blood in the vertebral artery].
Zhonghua Nei Ke Za Zhi
March 2024
Department of Neurology, First Medical Center, PLA General Hospital, Beijing 100039, China.
To explore the clinical characteristics of unilateral vertebral artery V4 segment occlusive lesions (severe stenosis or occlusion), where the contralateral vertebral artery can be compensated through blood flow and reverse supply to the posterior inferior cerebellarartery (PICA). This study is a retrospective case series of 66 patients with V4 segment occlusive lesions of unilateral vertebral artery diagnosed and treated from June 2020 to October 2022. Patient data were retrospectively collected, and their hemodynamic characteristics and imaging data were analyzed.
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