Publications by authors named "Guowei Tan"

In Southeast Guizhou, a region of China rich in ethnic diversity, the cultural landscapes of ethnic villages are increasingly vulnerable under the pressures of urbanization and tourism development. This study assesses the vulnerability of 43 ethnic villages in Leishan County using the Vulnerability Scoring Diagram (VSD) model, which evaluates exposure, sensitivity, and coping ability. Analyses using spatial autocorrelation and geographic weighted regression reveal distinct spatial patterns of vulnerability, with the northern region exhibiting higher vulnerability indices than the southern region.

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This study compared Ga-FAPI-46 PET/CT, F-fluorodeoxyglucose (FDG) PET/CT, and contrast-enhanced MRI (CE-MRI) for glioma imaging, classification, and recurrence detection and explored PET parameters and molecular pathological profiles. Between June 2020 and June 2024, we prospectively enrolled patients with space-occupying lesions in the brain or previously treated gliomas. All patients underwent sequential CE-MRI, Ga-FAPI-46, and F-FDG PET/CT.

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  • Duck meat's myofibrillar protein (MP) is highly susceptible to oxidation during cooking, negatively affecting its quality.
  • Shikimic acid significantly improves the oxidative stability of MP, showing a 74.20% reduction in carbonyl content and a 73.56% increase in sulfhydryl content at a specific ratio.
  • The study indicates that shikimic acid enhances MP's thermal stability and structural properties, potentially aiding meat processing technology.
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  • The study examines the effects of subthalamic nucleus deep brain stimulation (STN-DBS) on motor and nonmotor symptoms in patients with Meige syndrome and looks into factors influencing long-term outcomes.
  • A cohort of 55 patients who underwent STN-DBS was analyzed over a mean follow-up of 62 months, showing significant improvements in motor scores and overall health without cognitive decline.
  • Factors affecting long-term motor performance included longer disease duration, older age at surgery, and smaller activated tissue volume in the STN, indicating these may negatively impact results.
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  • * Research revealed that higher CD2AP levels in GBM promote cell proliferation, migration, and invasion, while reducing apoptosis, indicating a key role in tumor malignancy.
  • * The study found that CD2AP interacts with TRIM5 to modulate NF-κB activity, suggesting a potential therapeutic target through the CD2AP-TRIM5-NF-κB signaling pathway in treating GBM.
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  • This study investigates how Dabugan Decoction may treat generalized anxiety disorder (GAD) using network pharmacology, molecular docking methods, and experiments on rats.* -
  • Researchers identified 65 compounds in the decoction and noted 403 action targets, with a focus on the PI3K-Akt signaling pathway, which was found to be crucial for its therapeutic effects on GAD.* -
  • Animal experiments showed that treatment with Dabugan Decoction improved anxiety-related behaviors in rats, increased hippocampal nerve cell density, and reduced inflammation markers like TNF-α and IL-6.*
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Objective: To conduct a quantitative analysis of published studies on hematoma enlargement after intracerebral hemorrhage.

Methods: Studies on hematoma enlargement after cerebral hemorrhage were retrieved from the Web of Science database on June 30, 2023. Microsoft Excel, VOSviewer, and CiteSpace software were used for bibliometric analysis and visualization, focusing on the quantitative characteristics of the literature.

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Aim: Glioblastoma (GBM) has been reported to be the most common high-grade primary malignant brain tumor in clinical practice and has a poor prognosis. O -methylguanine-DNA methyltransferase (MGMT) promoter methylation has been related to prolonged overall survival (OS) in GBM patients after temozolomide treatment.

Methods: Proteomics and metabolomics were combined to explore the dysregulated metabolites and possible protein expression alterations in white matter (control group), MGMT promoter unmethylated GBM (GBM group) or MGMT promoter methylation positive GBM (MGMT group).

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Objective: This study investigates the extent of resection, duration of surgery, intraoperative blood loss, and postoperative complications in patients with high-grade glioma who received surgery with or without sodium fluorescein guidance.

Methods: A single-center retrospective cohort study was conducted on 112 patients who visited our department and underwent surgery between July 2017 and June 2022, with 61 in the fluorescein group and 51 in the non-fluorescein group. Baseline characteristics, intraoperative blood loss, surgery duration, resection extent, and postoperative complications were documented.

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Background: The circular RNA (circRNA) plays a vital role in the pathogenesis of tumors as a competitive endogenous RNA (ceRNA). Given the high aggressiveness and fatality rate of glioblastoma (GBM) as well as poor prognosis, it is necessary to construct a circRNA-related ceRNA network for further studies on the mechanism of GBM and identify possible biomarkers as well as therapeutic drugs.

Methods: Three datasets from the gene expression omnibus (GEO) database were downloaded to distinguish differential circRNAs, microRNAs, and messenger RNAs respectively in GBM.

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  • * Researchers identified AT7519, a second-generation CDK inhibitor, as a promising drug for GBM, showing significant reduction in cell viability and proliferation in various GBM cell lines.
  • * AT7519 works by disrupting key cell cycle phases and inducing cell death through multiple mechanisms, including apoptosis, suggesting it could be a viable treatment option for GBM patients.
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Glioblastoma (GBM) patients present poor prognosis. Deubiquitination by deubiquitinating enzymes (DUBs) is a critical process in cancer progression. Ubiquitin-specific proteases (USPs) constitute the largest sub-family of DUBs.

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Objective: To discuss the techniques and methods in respective operation of brain gliomas located in eloquent brain region under awake anesthesia state METHODS: 21 patients admitted into Department of Neurosurgery of the First Affiliated Hospital of Xiamen University were chosen as subject. Diagnosed with brain gliomas, they received operation with neuronavigation, intraoperative ultrasonography for locating the lesion and intraoperative direct electric stimulation for functional mapping of the eloquent brain region after receiving awake anesthesia. All patients were followed up from post-surgical 3 months to 18 months.

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  • Ferroptosis is crucial in glioma prognosis, but its mechanisms are not fully understood; this study investigates the relationship between autophagy and ferroptosis.
  • Researchers utilized online databases and the Chinese Glioma Genome Atlas to identify genes related to both processes, applying various statistical analyses to create a risk model for prognosis.
  • The study identified 23 significant genes and confirmed that their combined risk model can effectively predict glioma outcomes, leading to a nomogram for clinical use.
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  • Accurate seizure type identification is crucial for effective treatment and medication in epilepsy patients, but traditional methods face challenges in clinical settings due to the variability in EEG representations.
  • Artificial intelligence, particularly in automated EEG analysis, holds promise but needs to be tailored for better clinical performance, which is addressed by a new adversarial learning approach that enhances feature representation.
  • The proposed method involves training hybrid deep networks on short- and long-term EEG features, resulting in improved seizure classification accuracy by 5%, showcasing its potential for enhancing automated EEG analysis in clinical applications.
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Hybrid-modality brain-computer Interfaces (BCIs), which combine motor imagery (MI) bio-signals and steady-state visual evoked potentials (SSVEPs), has attracted wide attention in the research field of neural engineering. The number of channels should be as small as possible for real-life applications. However, most of recent works about channel selection only focus on either the performance of classification task or the effectiveness of device control.

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Background: Although chronic periodontitis has previously been reported to be linked with Alzheimer's disease (AD), the pathogenesis between the two is unclear. The purpose of this study is to analyze and screen the relevant and promising molecular markers between chronic periodontitis and Alzheimer's disease (AD).

Methods: In this paper, we analyzed three AD expression datasets and extracted differentially expressed genes (DEGs), then intersected them with chronic periodontitis genes obtained from text mining, and finally obtained integrated DEGs.

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Although the tumor microenvironment (TME) is known to influence the prognosis of glioblastoma (GBM), the underlying mechanisms are not clear. This study aims to identify hub genes in the TME that affect the prognosis of GBM. The transcriptome profiles of the central nervous systems of GBM patients were downloaded from The Cancer Genome Atlas (TCGA).

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Background: Considering the high invasiveness and mortality of glioma as well as the unclear key genes and signaling pathways involved in the development of gliomas, there is a strong need to find potential gene biomarkers and available drugs.

Methods: Eight glioma samples and twelve control samples were analyzed on the GSE31095 datasets, and differentially expressed genes (DEGs) were obtained via the R software. The related glioma genes were further acquired from the text mining.

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Background: The island sign of non-contrast computed tomography is a risk factor for hematoma expansion (HE) after spontaneous intracerebral hemorrhage, but has inconsistent conclusions. A meta-analysis was performed to investigate the predictive accuracy of island sign for HE.

Methods: A systematic review of published literature on island sign and hematoma expansion was conducted.

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Oncolytic viruses represent a promising therapeutic modality, but they have yet to live up to their therapeutic potential. Safety and efficacy concerns impel us to identify least toxic oncolytic agents that would generate durable and multifaceted anti-tumor immune responses to disrupt the tumors. Here we describe a rational engineered oncolytic herpes virus (OVH) that is a selective killer for targeting tumors, has strong safety records, induces complete regression of tumors in multiple tumor models, and elicits potent antitumor immunity.

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Background: Accumulating evidence in the last decade has pointed to the effectiveness of oncolytic virus in the treatment of a variety of cancer types in preclinical or clinical studies, showing high potency and low toxicity compared to conventional treatments. To track this research trend and highlight future directions, we conducted a bibliometric analysis of oncolytic virus research to date.

Methods: Relevant studies were obtained from the Web of Science Core Collection between January 2000 and December 2018.

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The purpose of this study was to determine the difference in discrimination between high- and low-grade supratentorial nonenhancing gliomas (HGGs and LGGs, respectively) when using apparent diffusion coefficient (ADC) values with high or standard b-value. Thirty-nine patients underwent conventional magnetic resonance imaging and diffusion-weighted imaging (DWI) with standard and high b-values (b = 1000 and 3000 s/mm, respectively). Minimum, maximum, and mean ADC values (ADC, ADC, and ADC, respectively) were measured from ADC maps with both b-values.

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Background: Glioma is the most devastating brain tumor worldwide. Previous studies showed that UTRN (utrophin) was related to cancers, but its role in glioma cells remains uncovered.

Materials And Methods: RNAi was used to knockdown UTRN in U251 cells using lentivirus system.

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Glioma as an aggressive type tumor is rapidly growing and has become one of the leading cause of cancer-related death worldwide. γ-Glutamylcyclotransferase (GGCT) has been shown as a diagnostic marker in various cancers. To reveal whether there is a correlation between GGCT and human glioma, GGCT expression in human glioma tissues and cell lines was first determined.

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