Publications by authors named "Xiong Li"

The blood-brain-barrier prevents many imaging agents and therapeutics from being delivered to the brain that could fight central nervous system diseases such as Alzheimer's disease and strokes. However, techniques such as the use of stapled peptides or peptide shuttles may allow payloads through, with bioconjugation achieved bio-orthogonal tetrazine/norbornene click chemistry. A series of lanthanide-tetrazine probes have been synthesised herein which could be utilised in bio-orthogonal click chemistry with peptide-based delivery systems to deliver MRI agents through the blood-brain-barrier.

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Acute myeloid leukemia (AML) is an aggressive cancer with variable treatment responses. While clinical factors such as age and genetic mutations contribute to prognosis, recent studies suggest that CT attenuation scores may also predict treatment outcomes. This study aims to develop a nomogram combining clinical and CT-based factors to predict treatment response and guide personalized therapy for AML patients.

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Introduction: Raising the temperature of abdominal wall endometriosis lesions contributes to an effective ablation; however, providing sufficient protection to the surrounding tissues remains a challenge. In this study, we aimed to combine ultrasound and single-port laparoscopic images to not only achieve complete ablation of abdominal wall endometriosis lesions but also protect surrounding tissues from damage. The adverse events and complications were Common Terminology Criteria for Adverse Events grade 1 or Society of Interventional Radiology classification grade A.

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Optical misalignment between transmitter and receiver leads to power loss and mode crosstalk in a mode division multiplexing (MDM) free-space optical (FSO) link. We report both numerical simulations and experimental results on the propagation performance of two typical vector beams, C-point polarization full Poincaré beams (FPB), and V-point polarization cylindrical vector beams (CVB), compared to homogeneous polarization scalar vortex beams (SVB) under optical misalignment. The FSO communication performance under misalignment using different transmit beams is evaluated in terms of power loss, mode crosstalk, power penalty, etc.

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Free-space optical (FSO) communication has the advantages of large bandwidth and high security and being license-free, making it the preferred solution for addressing the "last kilometer" of information transmission. However, it is susceptible to fluctuations in the received optical power (ROP) due to atmospheric turbulence and pointing errors, resulting in the inevitable free-space optical communication transmission performance degradation. In this work, we experimentally verified the turbulence resistance of the cylindrical vector beam (CVB) over a 3 km long free-space field trial link.

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Patients with cerebral venous thrombosis (CVT) may experience poor response to anticoagulant therapy and delayed surgical treatment may lead to clinical deterioration. However, the factors contributing to clinical deterioration remain poorly understood. Patients with CVT from three centers between January 2017 and October 2023 were included and grouped as the development cohort and validation cohort.

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The tumorigenesis of colorectal cancer (CRC) often follows the normal-adenoma-carcinoma (N-A-C) sequence. However, the molecular mechanisms underlying colorectal adenoma carcinogenesis remain largely unknown. Here, we analyzed transcriptomic profile changes in normal, advanced adenoma, and carcinoma tissues from patients with CRC, revealing that glutamic-pyruvic transaminase 1 () in colorectal tissues was down-regulated during the N-A-C process and correlated with poor CRC prognosis.

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Article Synopsis
  • Carrageenan oligosaccharides show promising biological activities and can be produced using carrageenases from a newly identified marine bacterium, Shewanella sp. LE8.
  • The study characterizes κ-, ι-, and λ-carrageenases produced by this bacterium, revealing that its crude enzyme was effective in degrading specific types of carrageenan under different conditions.
  • Findings from molecular weight distribution and analysis of hydrolysates indicate that the degradation process involves not only enzymatic action but also sulfatase participation, suggesting a potential for industrial applications of the oligosaccharides produced.
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Previous work indicated that the implantation and pregnancy rates of women with endometriosis are lower than those of healthy women during in-vitro fertilisation and embryonic transfer. And there are numerous microRNAs (miRNAs) in human uterine luminal fluid (ULF), some of which are associated with early preimplantation development of embryos. In our study, we sought to determine whether miRNAs in the ULF are differentially expressed between women with and without endometriosis and to uncover the association of miRNAs with the development potential of blastocysts.

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Graph Neural Networks (GNNs) have achieved great success in learning with graph-structured data. Privacy concerns have also been raised for the trained models which could expose the sensitive information of graphs including both node features and the structure information. In this paper, we aim to achieve node-level differential privacy (DP) for training GNNs so that a node and its edges are protected.

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Objective: To evaluate postoperative cerebral perfusion changes and their influencing factors in carotid endarterectomy (CEA) patients by integrating multimodal monitoring methods, including cerebral regional oxygen saturation (rSO), carotid ultrasound (CU), computed tomographic angiography (CTA), and computed tomographic perfusion imaging (CTP), with computational fluid dynamics (CFD) assessment.

Methods: We conducted a cohort study on patients with internal carotid artery (ICA) stenosis undergoing CEA at our institution. Pre- and postoperative assessments included CU, CTA, CTP, and rSO monitoring.

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Non-local metasurface supporting geometric phases at bound states in the continuum (BIC) simultaneously enables sharp spectral resonances and spatial wavefront shaping, thus providing a diversified optical platform for multifunctional devices. However, a static nonlocal metasurface cannot manipulate multiple degrees of freedom (DOFs), making it difficult to achieve multifunctional integration and be applied in different scenarios. Here, we presented and demonstrated phase-change non-local metasurfaces that can realize dynamic manipulation of multiple DOFs including resonant frequency, values, band, and spatial wavefront.

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To demonstrate the efficacy of machine learning models in predicting mortality in melanoma cancer, we developed an interpretability model for better understanding the survival prediction of cancer. To this end, the optimal features were identified, ten different machine learning models were utilized to predict mortality across various datasets. Then we have utilized the important features identified by those machines learning methods to construct a new model named NKECLR to forecast mortality of patient with cancer.

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Tensor factorization has received increasing interest due to its intrinsic ability to capture latent factors in multi-dimensional data with many applications including Electronic Health Records (EHR) mining. PARAFAC2 and its variants have been proposed to address irregular tensors where one of the tensor modes is not aligned, e.g.

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Utilizing electronic health records (EHR) for machine learning-driven clinical research has great potential to enhance outcome predictions and treatment personalization. Nonetheless, due to privacy and security concerns, the secondary use of EHR data is regulated, constraining researchers' access to EHR data. Generating synthetic EHR data with deep learning methods is a viable and promising approach to mitigate privacy concerns, offering not only a supplementary resource for downstream applications but also sidestepping the privacy risks associated with real patient data.

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Article Synopsis
  • Pancreatitis significantly impacts society, but comprehensive data on its incidence, prevalence, mortality, and health inequalities is currently lacking, highlighting an important gap in research.
  • Analysis of global data from 1990 to 2019 shows a decrease in age-standardized rates (ASR) of pancreatitis-related issues, yet the actual number of cases is rising, particularly among males and in regions with low Social Development Index (SDI).
  • Future projections indicate a continuing increase in the number of pancreatitis cases, emphasizing the need for more focused research and public health strategies to address the growing burden of this disease.
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  • Electrothermal-driven polymer fiber-based artificial muscles are gaining attention for their affordability and high energy output but face limitations due to ineffective cooling methods, particularly for larger sizes.
  • In this study, a new fluidic pump was developed using carbon nanotube electrodes, significantly enhancing cooling efficiency and allowing for quicker actuation and increased power density.
  • The research also included integrating a sensing layer for better control of muscle actuation and showcased potential applications in advanced materials, flexible components, and bionic designs.
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Background: S-phase kinase-associated protein 2 (SKP2) is a typical oncogene aberrantly overexpressing in a variety of cancer types, but it remains elusive whether SKP2 regulates the antitumor immunity of triple-negative breast cancer.

Methods: The efficacy of anti-PD-1 was evaluated in the orthotopic xenografts of immunocompetent mice models. The infiltration of cytotoxic T cells in tumor microenvironment(TME) were assessed by immunofluorescence staining.

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  • * A randomized trial in China involved 269 patients who were assigned to start antiplatelet therapy early (3 days post-surgery) or late (30 days post-surgery) to evaluate safety and effectiveness on major cardiovascular events.
  • * The study, which involved patients mostly around 60 years old, aimed to measure occurrences of new major ischaemic events and intracranial bleeding within 90 days after surgery, and is officially registered under ClinicalTrials.gov number NCT04820972.
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Background: Mitochondrial dysfunction emerges as an early pathological hallmark of Alzheimer's disease (AD). The reduction in mitochondrial membrane potential and the elevation of reactive oxygen species (ROS) production are pivotal in the initiation of neuronal cell apoptosis. Pedunculoside(Ped), a novel triterpene saponin derived from the dried barks of Ilex rotunda Thunb, exhibits a potent anti-inflammatory effect.

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This study combines tensor polarization holography theory and multichannel recording techniques and proposes a novel polarization encoding method, the orthogonal polarized array (OPA). This method can efficiently and independently reconstruct polarization holograms using accurate OPA waves in the reference-based multiplexing technique when the reference waves in the reading process have the same polarization state as those in the recording process. The novelty is that the multiplexing dimensions of the OPA can reach any number without limitations.

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In an amplitude-modulated collinear holographic data storage system, optical system aberration and experimental noise due to the recording medium often result in a high bit error rate (BER) and low signal-to-noise ratio (SNR) in directly read detector data. This study proposes an anti-noise performance analysis using deep learning. End-to-end convolutional neural networks were employed to analyze noise resistance in encoded data pages captured by the detector.

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Purpose: Melanoma is a highly aggressive and dangerous malignant skin tumor and there is an urgent need to develop effective therapeutic approaches against melanoma. The main objective of this study was to construct a multifunctional nanomedicine (GNR@PEG-Qu) to investigate its therapeutic effect on melanoma from the oxidative stress pathway.

Methods: First, the nanomedicine GNR@PEG-Qu was synthesized and characterized, and its photothermal and antioxidant properties were confirmed.

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  • Chronic refractory wounds are difficult to heal, and this study explores the potential of exosomes derived from platelet-rich plasma (PRP) to improve healing, particularly through their effect on macrophages.
  • The study involved extracting exosomes from two types of PRP (pure and leukocyte-rich) and assessing their interaction with macrophages, using various scientific techniques to measure cell viability, apoptosis, and polarization.
  • Findings revealed that exosomes from leukocyte-rich PRP (L-PRP) can hinder macrophage viability and induce their apoptosis, while exosomes from pure PRP (P-PRP) encourage a healing-promoting M2 polarization in these immune cells.
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