Publications by authors named "Guowei Chen"

Rationale And Objectives: β-thalassemia (β-TM) is an inherited hematological disorder characterized by impaired hemoglobin synthesis, leading to chronic anemia and systemic iron overload. While numerous studies have documented widespread iron deposition caused by repeated blood transfusions and disrupted iron metabolism, the impact of iron overload on the brain remains poorly understood. This study aimed to investigate whole-brain iron accumulation in patients with β-TM using quantitative susceptibility mapping (QSM).

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Sb is a helpful radionuclide in nuclear forensics, yet discrepancies in previous measurements have led to a 1.8 % uncertainty in its recommended half-life value, compromising accurate activity determination. In this study, Sb samples were chemically separated from the fission products of U following thermal neutron irradiation at Xi'an Pulsed Reactor.

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Background: Bupi Yishen formula (BYF) is a traditional Chinese herbal mixture with proven efficacy in attenuating kidney function deterioration among patients with advanced chronic kidney disease (CKD), and improving renal fibrosis of CKD animal models. Previous studies have shown that BYF rehabilitates metabolic dysregulation under CKD condition, but its exact mechanism remains unclear.

Purpose: This study aimed to elucidate the therapeutic effect and its potential mechanism on regulating renal energy metabolism in CKD.

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Acidic copper mine water, characterized by its organic matter scarcity, low pH, and high Cu pollution, presents major challenges due to limitations in traditional biological treatment and the high costs of physicochemical methods. There is an urgent need for an efficient treatment and resource recovery process. Algae could adsorb and immobilize Cu, and the secondary metabolic organics could be metabolized by bacteria, which compensates for the shortcomings of algae.

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Pancreatic ductal adenocarcinoma (PDAC) remains one of the most challenging malignancies, with poor survival rates due to late-stage diagnosis and limited treatment options. Neoadjuvant therapy (NAT), which involves chemotherapy or chemoradiation prior to surgical resection, has emerged as a promising approach to improve resectability and overall survival (OS). The integration of advanced imaging techniques and biomarkers for evaluating the response to NAT is crucial for optimizing therapeutic strategies and surgical outcomes.

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Background: Beta-thalassemia major (β-TM) is a hereditary blood disorder characterized by chronic anemia and hypoxia, which may have profound effects on brain function. This study systematically evaluates alterations in both intra-brain network functional connectivity (FC) and inter-network functional connectivity (FNC) in β-TM patients using resting-state functional magnetic resonance imaging (rs-fMRI) and independent component analysis (ICA), aiming to uncover the potential mechanisms underlying their neurofunctional impairments.

Methods: This study included 72 β-TM patients and 50 age- and gender-matched healthy controls (HC).

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Background: Thalassemia is an inherited hematological disorder characterized by chronic anemia and multisystem involvement, including potential impacts on the central nervous system. Research has suggested a relationship between thalassemia and glymphatic system dysfunction, which may contribute to neurocognitive impairments. However, the exact mechanisms linking thalassemia to changes in glymphatic function remain unclear.

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Thalassemia is a hereditary hemoglobinopathy characterized by severe anemia and iron overload, which may affect brain microstructure. This study aims to investigate changes in the white matter (WM) microstructure of patients with β-thalassemia using diffusion tensor imaging (DTI) and tract-based spatial statistics (TBSS) analysis. The study included 40 patients with β-thalassemia (aged 18-45 years, mean age 30.

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To investigate the feasibility of a radiomics model for the detection of bladder invasion (BI) by colorectal cancer (CRC) on CT images. Ninety-six patients with CRC and a suspicion of BI who underwent tumor resection with partial or total cystectomy were reviewed. The 96 patients were randomly assigned to the training dataset (n = 68) or test dataset (n = 28) at a ratio of 7:3.

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Addressing the challenge of metabolic inhibition between phenol and ammonium in coal gasification wastewater (CGW), this study introduced a novel algal-microbial fuel cell (AMFC). It combined the advantages of electroactive bacteria and Synechocystis to achieve synergistic metabolism, establishing a cooperative mechanism for pollutant separation and enhanced transformation to achieve the mutual promotion of phenol and ammonium removal. Remarkably, raising phenol to 1500 mg COD/L boosted ammonium removal by 31.

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Background: The appropriate ligation level of the inferior mesenteric artery (IMA) in left-sided colorectal cancer (CRC) surgery is debated, with metastasis in No. 253 lymph node (No. 253 LN) being a key determining factor.

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High spatiotemporal resolution of noninvasive electroencephalography (EEG) signals is an important prerequisite for fine brain-computer manipulation. However, conventional scalp EEG has a low spatial resolution due to the volume conductor effect, making it difficult to accurately identify the intent of brain-computer manipulation. In recent years, transcranial focused ultrasound modulated EEG technology has increasingly become a research hotspot, which is expected to acquire noninvasive acoustoelectric coupling signals with a high spatial and temporal resolution.

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The hydrophilicity of two-dimensional (2D) transition-metal carbides, carbonitrides, and nitrides (MXene) nanochannels plays a critical role in water transport during filtration, yet its specific effects on MXene membranes remain inadequately understood. Herein, we systematically investigated water transport through TiCT MXene nanochannels using molecular dynamics simulations coupled with experimental validation, addressing a significant knowledge gap in MXene-based separation membranes. Our simulations demonstrated that strong interactions between water molecules and hydrophilic nanochannel MXene surfaces (TiC(OH) MXene or TiC(NH) MXene) facilitated the formation of ordered molecular arrangements, substantially improving water permeability.

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Clinical data of 1,780 patients with epithelial ovarian carcinoma (EOC) in the Surveillance, Epidemiology and End Results (SEER) database were retrospectively analyzed. A random survival forest model and a nomogram model were built based on the prognostic factors. The clinical data of 140 patients with EOC treated in Liuzhou Worker's Hospital were collected for the validation of the prognostic model.

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Multiple resonance (MR)-type thermally activated delayed fluorescence (TADF) emitters have garnered significant interest due to their narrow full width at half maximum (FWHM) and high electroluminescence efficiency. However, the planar structures and large singlet-triplet energy gaps (ΔEs) characteristic of MR-TADF molecules pose challenges to achieving high-performance devices. Herein, two isomeric compounds, p-TPS-BN and m-TPS-BN, are synthesized differing in the connection modes between a bulky tetraphenylsilane (TPS) group and an MR core.

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Fluorescence of cyanine dyes is often quenched in aqueous solution, limiting their application in water or biological system. In this work, a novel strategy of host-guest interaction based on cyanine derivatives containing auxochromes was proposed to enhance fluorescence in aqueous solution and cell imaging. By using the host (methylated β-cyclodextrin, M-β-CD) to inclusion and suppress the TICT effect of the dye, the fluorescence was significantly enhanced at lower host concentration.

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Article Synopsis
  • Endometrial cancer (EC) is increasingly common, but the genetic factors contributing to its development remain largely unclear, highlighting the need for more research.
  • Various methods, including gene expression analysis and laboratory assays, were used to investigate the role of the CTCF gene in EC cell behavior, accompanied by experiments in mice to test these findings.
  • The study found 1,025 differentially expressed genes related to immune response in EC, with CTCF showing increased expression; silencing CTCF reduced the cancer’s invasiveness and growth, indicating it plays a significant role in EC progression.
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Article Synopsis
  • * VirID is a new software tool that improves RNA virus discovery and analysis by using a detailed database of RNA-dependent RNA polymerase, enabling better accuracy in profiling and characterizing viruses.
  • * Testing shows that VirID can effectively identify various RNA viruses in real-world samples, providing valuable data on viral diversity and how viruses relate to humans, animals, and plants, making it essential for virology research and monitoring infectious diseases.
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Article Synopsis
  • * VirTAXA is a new tool that helps classify RNA viruses at the genus level using advanced methods like remote homology search and tree-based validation.
  • * This tool improves upon existing methods by accurately assigning genus labels to more viral sequences; it can also be adapted for use with other virus types.
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Article Synopsis
  • Bio-composite foams made from Epoxidized Natural Rubber (ENR) were developed using lignin (LG) and ammonium polyphosphate (APP) to enhance their properties.
  • The addition of APP sped up the foaming process and improved the structural integrity of the foam while increasing compressive strength and modulus significantly.
  • These foams also showed better thermal insulation and flame-retardant capabilities due to the synergistic effects of LG and APP, making them ideal for practical applications requiring these features.
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Purpose: Button battery nasal impactions pose serious risks due to complications and the need for prompt removal, yet research on interventions remains limited due to its rare occurrence. To delineate the clinical manifestations of nasal foreign bodies associated with button batteries and to explore treatment approaches focused on minimizing the reliance on general anesthesia and surgical interventions.

Methods: This study focuses on 176 cases of children who received treatment for nasal cavity button battery impactions.

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Background: To evaluate the causal relationship between abdominal multi-organ iron content and PD risk using publicly available genome-wide association study (GWAS) data.

Methods: We conducted MR analysis to assess the effects of iron content in various abdominal organs on PD risk, followed by reverse analysis. Additionally, MVMR analysis evaluated the independent effects of organ-specific iron content on PD.

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Article Synopsis
  • High-throughput sequencing technologies have greatly improved the identification of new RNA viruses, but determining their hosts remains difficult due to factors like high mutation rates and environmental samples.
  • The study introduces RNAVirHost, a machine learning tool that predicts RNA virus hosts based on viral genomes, achieving an accuracy of 84.3%, which is significantly higher than traditional alignment methods.
  • RNAVirHost offers a cost-effective and efficient approach for host prediction, enhancing RNA virus analysis and contributing to better pandemic surveillance.
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Objective: Colon cancer is associated with multiple levels of molecular heterogeneity. RNA processing converts primary transcriptional RNA to mature RNA, which drives tumourigenesis and its maintenance. The characterisation of RNA processing genes in colon cancer urgently needs to be elucidated.

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