Publications by authors named "Yanchun Wei"

Article Synopsis
  • * This study presents a sensitive sensing system using surface plasmon resonance (SPR) technology, enhanced by COMSOL simulation, with gold nanoparticles modified by sodium sulfide for selective Hg detection.
  • * The system achieved a low detection limit of 8.15 nM for mercury and demonstrated a high recovery rate (90.1-97.3%) in environmental samples, offering a quick and accurate way to measure mercury levels.
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Background: The key endpoint for treatment efficacy in chronic hepatitis C (CHC) is the absence of a detectable virus at 24 weeks after treatment. This study aims to determine the long-term clinical outcomes in patients with CHC after interferon and ribavirin treatment and the factors that influence them.

Methods: A retrospective study was conducted on 259 patients with CHC between 2003 and 2021, and the patients were divided into treated (n = 159) and untreated (n = 100) groups.

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  • Researchers developed a new type of nanomedicine that combines chemotherapy sensitization and protection to overcome dosage limits in cancer treatment.
  • The nanomedicine uses a special system that releases carbon monoxide and drugs when exposed to near-infrared light, targeting tumor cells while protecting normal cells.
  • This innovative approach improves the effectiveness of chemotherapy while reducing side effects, offering a potential solution for better cancer treatment outcomes.
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  • Titanium and its alloys, commonly used in medical devices, struggle with biocompatibility, prompting investigation into improving this feature.
  • The study innovatively employed TiO nanotubes on titanium surfaces, followed by layering polyacrylic acid and gentamicin, with zinc ions added for enhanced bioactivities.
  • Results showed improved blood compatibility and cytocompatibility for endothelial cells, alongside effective antibacterial properties from the combined treatment over a 14-day release period.
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  • Titanium dioxide nanotube arrays are effective biomaterials due to their tubular structure, and this study focused on enhancing their biocompatibility through zinc doping.
  • The size of the nanotubes and the presence of zinc significantly affected properties like hydrophilicity, protein adsorption, and blood compatibility, with larger diameters reducing albumin but increasing fibrinogen adsorption.
  • Zinc doping improved blood compatibility by promoting more favorable protein interactions and enhancing endothelial cell adhesion and growth, making these modified nanotubes suitable for applications in medical implants like stents.
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With the development of modern cities, roads, and landscapes, it is becoming increasingly important for infrastructure such as tunnels to provide an esthetically pleasing experience. In this respect, it is necessary to conduct studies that consider the esthetic design of tunnel portals using esthetics research. Regarding the esthetic evaluation of tunnel portals, this paper fully considers the dynamic visual effect from the driver's perspective.

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Objective: To investigate the clinical effects of percuteneous endoscopic interlaminar discectomy(PEID)and fenestration discectomy(FD) for the treatment of L₅S₁ lumbar disc herniation(LDH).

Methods: A retrospective analysis was made on 86 patients with L₅S₁ LDH from January 2014 to March 2017 and followed up. According to the different surgical methods, the patients were divided into PEID group(43 cases) and FD group(43 cases).

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Magnesium alloy is considered as one of the ideal cardiovascular stent materials owing to its good mechanical properties and biodegradability. However, the rapid degradation rate and the insufficient biocompatibility restrict its clinical applications. In this study, the magnesium alloy (AZ31B) was modified by combining the surface chemical treatment and in-situ self-assembly of 16-phosphonyl-hexadecanoic acid, followed by the immobilization of chitosan-functionalized graphene oxide (GOCS).

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Background: Photothermal therapy with accurate and real-time temperature detection is desired in clinic. Upconversion nanocrystals (UCNs) are candidate materials for simultaneous temperature detection and photothermal agents carrying. However, the weak luminescence and multiple laser excitations of UCNs limit their application in thermal therapy.

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Ethnopharmacological Relevance: Cardiac fibrosis is a common characteristic of many cardiac diseases. Our previous results showed that TRPM7 channel played an important role in the fibrosis process. MicroRNA-135a was reported to get involved in the fibrotic process.

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This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal).

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Diphenylalanine (FF), as the smallest unit and core recognition motif of β-amyloid (Aβ), could self-assemble into nanofibers, which induces an early onset of Alzheimer's disease (AD). Green/near-infrared fluorescent BODIPY probes were designed and synthesized to detect FF-assembly, providing unique insights into the chemical and molecular mechanism of Aβ aggregation and drug development for AD.

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Nanoparticles of four noble metal doped titanium dioxide (i.e., Pd/TiO, Ag/TiO, Pt/TiO and Cu/TiO) were synthesized and investigated for their effectiveness to degrade polybrominated diphenyl ethers (PBDEs) under UV light.

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Application of organic dyes is limited in biomedical fields due to the rapid self-quenching, poor stability and water solubility. In this work, polymer modified organic dyes is developed through the dyes initiating polymerization. The polymer length is studied by tuning the amount of monomer.

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Emerging evidence has demonstrated that the dysregulation of microRNA (miRNA/miR) serves a crucial role in the tumorigenesis and tumor development of osteosarcoma (OS), primarily by affecting various pathological behaviors. Therefore, better knowledge of miRNA in OS may provide novel insights into the pathogenesis of OS, and may facilitate the development of promising therapeutics for patients with this disease. MiRNA‑944 is frequently dysregulated in human cancers.

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Nanoparticles have promising biomedical applications for drug delivery, tumor imaging and tumor treatment. Pharmacokinetics are important for the in vivo application of nanoparticles. Biodistribution and clearance are largely defined as the key points of pharmacokinetics to maximize therapeutic efficacy and to minimize side effects.

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The aim of the current study was to investigate the expression and role of microRNA (miR)-1271 in the pathogenesis of osteosarcoma, and the associated underlying mechanisms. Tissue samples from 45 patients with osteosarcoma were collected, while the 143B, MG-63 and U-2 OS osteosarcoma cell lines were also cultured. The expression levels of miR-1271 in the tissues and cells were detected with reverse transcription-quantitative polymerase chain reaction, and 143B osteosarcoma cells were subjected to miR-1271 manipulation.

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In this work, permeability of polymersomes was quantified by fluorescence enhancement. The polymersomes were prepared from poly(ethylene glycol)-b-poly(ε-caprolactone) (PEG-PCL), and an acid-sensitive hydrophobic dye borondipyrromethene (BODIPY) was encapsulated into the membrane of polymersomes. H from trifluoroacetic acid (TFA) would diffuse into the membrane of polymersomes to enhance the fluorescence of BODIPY.

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Purposes: Retinoblastoma (RB) is the most common primary intraocular malignancy of infancy. An alternative RB treatment protocol is proposed and tested. It is based on a photodynamic therapy (PDT) with a designed molecular beacon that specifically targets the murine double minute x (MDMX) high-expressed RB cells.

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SRC-3 is widely expressed in multiple tumor types and involved in cancer cell proliferation and apoptosis. Histone deacetylase (HDAC) inhibitors are promising antitumor drugs. However, the poor efficacy of HDAC inhibitors in solid tumors has restricted its further clinical application.

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The combination of diagnostics and therapeutics is growing rapidly in cancer treatment. Here, using upconversion nanoparticles coated with chitosan conjugated with a targeting molecule and loaded with indocyanine green (ICG), we develop an excitation-selectable nanoprobe with highly integrated functionalities, including the emission of visible and near-infrared (NIR) light, strong optical absorption in the NIR region and high photostability. After intravenous injection in tumor bearing mice, the nanoprobes target to the tumor vascular system.

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This study was conducted to analyze the responses of soil organic carbon (SOC) and total nitrogen (TN) to three typical re-vegetation patterns, i.e., grassland, alfalfa land and peashrub land on the Loess Plateau of China, and also to assess the dynamics of SOC and TN with re-vegetation age.

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Subcellular organelles play critical roles in cell survival. In this work, a novel photodynamic therapy (PDT) drug delivery and phototoxicity on/off nano-system based on graphene oxide (NGO) as the carrier is developed to implement subcellular targeting and attacking. To construct the nanodrug (PPa-NGO-mAb), NGO is modified with the integrin αvβ3 monoclonal antibody (mAb) for tumor targeting.

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