An intelligent vascular stent was fabricated from a hydrophobic mesh tube, which cans in-situ release thrombolytic drugs only by an injection of nitroglycerin solution. The mesh with 80# pore size has the highest hydrophobic property and the most sensitive response performance after 3.00 wt% (Heptadecafluoro-1,1,2,2,-tetradecyl)trimethoxysilane (HFTES) treatment. This may be due to the larger hydrophobic effective area and more active fluorine groups of 80# mesh surface treated by 3.00 wt% HFTES. It was proved that the "thrombolytic medicine" could be easily and efficiently into the interior of the stent after triggered only by an injection of nitroglycerin liquid. The in-situ thrombolytic effect and the spent time were satisfactory. The thrombosis had been completely dissolved. This technology provides a potential therapy for vascular restenosis and has great potential applications in the therapy for in-stent restenosis.
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http://dx.doi.org/10.1166/jnn.2015.11647 | DOI Listing |
J Gastrointest Oncol
December 2024
Department of Interventional Vascular Surgery, Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, China.
Background: Hepatocellular carcinoma (HCC) constitutes approximately 75-85% of primary liver cancers and is a heavy burden on public health. Many innovative prediction systems have integrated radiomics, artificial intelligence, pathological information, or even genetic information for the stratification and prognosis prediction of patients with HCC. However, these systems still lack practical and clinical applications.
View Article and Find Full Text PDFACS Nano
January 2025
Advanced Medical Research Institute, Cheeloo College of Medicine, Shandong University, Jinan 250012, P. R. China.
Blood-contacting medical devices can easily trigger immune responses, leading to thrombosis and hyperblastosis. Constructing microtexture that provides efficient antithrombotic and rapid reendothelialization performance on complex curved surfaces remains a pressing challenge. In this work, we present a robust and regular micronano binary texture on the titanium surface, characterized by exceptional mechanical strength and precisely controlled wettability to achieve excellent hemocompatibility.
View Article and Find Full Text PDFFront Med (Lausanne)
December 2024
The Department of Ophthalmology of the First Affiliated Hospital, Gannan Medical University, Ganzhou, Jiangxi, China.
Aim: To quantitatively analyze the relationship between spherical equivalent refraction (SER) and retinal vascular changes in school-age children with refractive error by applying fundus photography combined with artificial intelligence (AI) technology and explore the structural changes in retinal vasculature in these children.
Methods: We conducted a retrospective case-control study, collecting data on 113 cases involving 226 eyes of schoolchildren aged 6-12 years who attended outpatient clinics in our hospital between October 2021 and May 2022. Based on the refractive spherical equivalent refraction, we categorized the participants into four groups: 66 eyes in the low myopia group, 60 eyes in the intermediate myopia group, 50 eyes in the high myopia group, and 50 eyes in the control group.
J Imaging Inform Med
January 2025
Department of Ophthalmology, The Affiliated Hospital of Guilin Medical University, Guilin, China.
Optical coherence tomography angiography (OCTA) is an emerging, non-invasive technique increasingly utilized for retinal vasculature imaging. Analysis of OCTA images can effectively diagnose retinal diseases, unfortunately, complex vascular structures within OCTA images possess significant challenges for automated segmentation. A novel, fully convolutional dense connected residual network is proposed to effectively segment the vascular regions within OCTA images.
View Article and Find Full Text PDFNat Commun
January 2025
Division of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan.
Microthrombus formation is associated with COVID-19 severity; however, the detailed mechanism remains unclear. In this study, we investigated mouse models with severe pneumonia caused by SARS-CoV-2 infection by using our in vivo two-photon imaging system. In the lungs of SARS-CoV-2-infected mice, increased expression of adhesion molecules in intravascular neutrophils prolonged adhesion time to the vessel wall, resulting in platelet aggregation and impaired lung perfusion.
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