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Patent ductus arteriosus closure in infants weighing less than 1500 g via a tiny microcatheter: a simple technique with zero-contrast exposure.
Cardiol Young
January 2025
Pediatric Cardiology, Stead Family Children's Hospital, University of Iowa, Iowa City, IA, USA.
Background: Despite patent ductus arteriosus closure in premature infants is a relatively fast procedure, it involves specific steps for equipment exchange and the use of a 4-Fr catheter, which may be large for tiny infants, potentially causing haemodynamic instability or tricuspid valve regurgitation.
Objectives: This study aims to describe the early experience with a new technique designed to simplify transcatheter patent ductus arteriosus closure in premature infants. It enables the closure using the KA micro plug device via a single microcatheter without equipment exchanges and contrast exposure.
Chemical etching of silicon assisted by graphene oxide under negative electric bias.
Nanoscale Adv
January 2025
Department of Materials Science and Engineering, Graduate School of Engineering, Kyoto University Yoshida-honmachi, Sakyo-ku Kyoto 606-8501 Japan
Chemical etching of silicon assisted by graphene oxide (GO) has been attracting attention as a new method to fabricate micro- or nano-structures. GO promotes the reduction of an oxidant, and holes are injected into silicon, resulting in the preferential dissolution of the silicon under GO. In the conventional etching method with GO, the selectivity of the etching was low due to the stain etching caused by nitric acid.
View Article and Find Full Text PDFIn the last few years, new ways of structuring light have emerged, with the potential to be used in a wide variety of applications, including materials processing, micro-particle manipulation and charged particle acceleration. One of these techniques is the structured laser beam (SLB). The important advantages of this beam are the simple generation principle using spherical aberration and the potentially infinite propagation range.
View Article and Find Full Text PDFInsights into the molecular self-assembly of urea-functionalized acetylenes.
Nanotechnology
January 2025
Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali, 140306, INDIA.
This study investigates simple acetylenes substituted with phenylurea as a constant H-bonding unit (Alk-R) and varied hydrophobic units (R = H, Phenyl (Ph), Phenylacetylene (PA), Ph-NMe2) to understand self-assembly properties driven by synergistic non-covalent interactions. Our observations reveal hierarchical self-assembled fibrillar networks with luminescent needles, fibers, and flowers on nano- to micro-meter scales. Subtle changes in substituents led to significant differences: H, Ph, PA, and Ph-NMe2 produced needle-like crystals, dendritic nanofibers, microflakes, and no self-assembly, respectively.
View Article and Find Full Text PDFPreclinical evaluation and preliminary clinical study of Ga-NODAGA-NM-01 for PET imaging of PD-L1 expression.
Cancer Imaging
January 2025
Department of Nuclear Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Hongkou District, No. 100, Haining Road, Shanghai, 200080, China.
Background: Programmed cell death 1/programmed death ligand-1 (PD-L1)-based immune checkpoint blockade is an effective treatment approach for non-small-cell lung cancer (NSCLC). However, immunohistochemistry does not accurately or dynamically reflect PD-L1 expression owing to its spatiotemporal heterogeneity. Herein, we assessed the feasibility of using a Ga-labeled anti-PD-L1 nanobody, Ga-NODAGA-NM-01, for PET imaging of PD-L1.
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