175,245 results match your criteria: "Hong Kong; The University of Hong Kong - Shenzhen Hospital[Affiliation]"

Factors That Influence Young Adults' Preferences for Virtual Reality Exergames in a Weight Control Setting: Qualitative Study.

J Med Internet Res

December 2024

Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Hong Kong, China (Hong Kong).

Background: Obesity could compromise people's health and elevate the risk of numerous severe chronic conditions and premature mortality. Young adults are at high risk of adopting unhealthy lifestyles related to overweight and obesity, as they are at a phase marked by several significant life milestones that have been linked to weight gain. They gain weight rapidly and excess adiposity mostly accrues, compared with middle-aged and older adults when weight stabilizes or even decreases.

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Background: Large language models have shown remarkable efficacy in various medical research and clinical applications. However, their skills in medical image recognition and subsequent report generation or question answering (QA) remain limited.

Objective: We aim to finetune a multimodal, transformer-based model for generating medical reports from slit lamp images and develop a QA system using Llama2.

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Vascular endothelial growth factor receptor-1 (FLT1) interactions with amyloid-beta in Alzheimer's disease: A putative biomarker of amyloid-induced vascular damage.

Neurobiol Aging

December 2024

Vanderbilt Memory and Alzheimer's Center, Vanderbilt University Medical Center, Nashville, TN, USA; Pharmacology Department, Vanderbilt University Medical Center, Nashville, TN, USA; Department of Neurology, Vanderbilt University Medical Center, Nashville, TN, USA; Epidemiology Doctoral Program, School of Medicine, Vanderbilt University, Nashville, TN, USA; Vanderbilt Genetics Institute, Vanderbilt University Medical Center, Nashville, TN, USA. Electronic address:

We have identified FLT1 as a protein that changes during Alzheimer's disease (AD) whereby higher brain protein levels are associated with more amyloid, more tau, and faster longitudinal cognitive decline. Given FLT1's role in angiogenesis and immune activation, we hypothesized that FLT1 is upregulated in response to amyloid pathology, driving a vascular-immune cascade resulting in neurodegeneration and cognitive decline. We sought to determine (1) if in vivo FLT1 levels (CSF and plasma) associate with biomarkers of AD neuropathology or differ between diagnostic staging in an aged cohort enriched for early disease, and (2) whether FLT1 expression interacts with amyloid on downstream outcomes, such as phosphorylated tau levels and cognitive performance.

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Introduction: Sleep concerns have become increasingly common over the past few decades. This study outlines the perceived needs and gaps in pediatric sleep education, drawing insights from a diverse international cohort of pediatric sleep health professionals.

Methods: International Pediatric Sleep Association (IPSA) members were invited to complete an online survey examining a variety of topics related to pediatric sleep education developed by the education committee.

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Novel antimalarial 3-substituted quinolones isosteres with improved pharmacokinetic properties.

Eur J Med Chem

December 2024

School of Pharmacy and Food Engineering, Wuyi University, 529020, Jiangmen, China; Department of Chemistry, University of Liverpool, L69 7ZD, Liverpool, UK. Electronic address:

Aryl quinolone derivatives can target the cytochrome bc complex of Plasmodium falciparum, exhibiting excellent in vitro and in vivo antimalarial activity. However, their clinical development has been hindered due to their poor aqueous solubility profiles. In this study, a series of bioisosteres containing saturated heterocycles fused to a 4-pyridone ring were designed to replace the inherently poorly soluble quinolone core in antimalarial quinolones with the aim to reduce π-π stacking interactions in the crystal packing solid state, and a synthetic route was developed to prepare these alternative core derivatives.

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High-energy nuclear collisions create a quark-gluon plasma, whose initial condition and subsequent expansion vary from event to event, impacting the distribution of the eventwise average transverse momentum [P([p_{T}])]. Disentangling the contributions from fluctuations in the nuclear overlap size (geometrical component) and other sources at a fixed size (intrinsic component) remains a challenge. This problem is addressed by measuring the mean, variance, and skewness of P([p_{T}]) in ^{208}Pb+^{208}Pb and ^{129}Xe+^{129}Xe collisions at sqrt[s_{NN}]=5.

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Measurement of CP Violation Observables in D^{+}→K^{-}K^{+}π^{+} Decays.

Phys Rev Lett

December 2024

Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.

Article Synopsis
  • The study investigates CP symmetry violation in the decay of D^{+} particles into K^{-}K^{+}π^{+} using data from proton-proton collisions at a high energy of 13 TeV.
  • A unique model-independent method was employed to analyze the phase-space distributions of D^{+} and D^{-} particles, correcting for any instrumental biases using D_{s}^{+} decays.
  • The findings indicate no significant evidence of CP violation, with a p value of 8.1%, and measure specific CP asymmetry observables, marking this study as the most sensitive search of its kind in multibody decays.
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Epstein-Barr nuclear antigen 1 (EBNA1), a sequence-specific DNA binding protein of Epstein-Barr virus (EBV), is essential for viral genome replication and maintenance and is therefore an attractive target for the therapeutic intervention of EBV-associated cancers. Several EBNA1-specific inhibitors have demonstrated the ability to block EBNA1 function in vitro, but practical delivery strategies for these inhibitors in vivo are still lacking. Here, we report an intelligent hierarchical targeting theranostic nanosystem (denoted as mZGOCS@MnO-P5) that integrates an azide (N3) terminal dual-targeting peptide (N3-P5), a tumor microenvironment-responsive degradable MnO nanosheet, and a mesoporous ZnGaO:Cr, Sn near-infrared persistent luminescence (NIR-PL) nanosphere (mZGOCS).

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Article Synopsis
  • Excitons, which are pairs of electrons and holes held together by Coulomb forces, can form a superfluid at low temperatures due to their bosonic properties.
  • The research involves directly imaging this exciton superfluid in a specific material setup (MoSe-WSe heterostructure), demonstrating a significant level of order across the sample.
  • The study also details how variations in exciton density and temperature help construct a phase diagram, revealing that the superfluid state can persist up to 15 K, aligning well with theoretical expectations and paving the way for advancements in quantum devices and superfluid research.
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Article Synopsis
  • Ovarian cancer is the most deadly gynecological cancer, with current chemotherapy often ineffective due to drug resistance, especially in advanced stages.
  • A new treatment using a nanoformulation called Bola/IM targets ovarian cancer stem cells (CSCs) more effectively than imatinib alone, utilizing a specific mechanism to inhibit cancer growth and spread.
  • The Bola/IM formulation shows promising results in lab models and enhances the effectiveness of cisplatin, making it a strong candidate for improving treatment for metastatic ovarian cancer.
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Contrasting Responses of Smoke Dispersion and Fire Emissions to Aerosol-Radiation Interaction during the Largest Australian Wildfires in 2019-2020.

Environ Sci Technol

January 2025

Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China.

The record-breaking 2019-2020 Australian wildfires have been primarily linked to climate change and its internal variability. However, the meteorological feedback mechanisms affecting smoke dispersion and wildfire emissions on a synoptic scale remain unclear. This study focused on the largest wildfires occurring between December 25, 2019 and January 10, 2020, under the enhanced subtropical high, when the double peak in wildfire evolution was favored by sustained low humidity and two synchronous increases in temperature and wind.

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Expedited Approval of Urgently Needed Drugs in China.

JAMA Health Forum

January 2025

Department of Pharmacy Administration and Clinical Pharmacy, School of Pharmaceutical Sciences, Peking University, Beijing, China.

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A novel quantitative angiogenesis assay based on visualized vascular organoid.

Angiogenesis

January 2025

Department of Physiology and Pathophysiology, School of Basic Medical Sciences, State Key Laboratory of Vascular Homeostasis and Remodeling, Beijing Advanced Center of Cellular Homeostasis and Aging-Related Diseases, Clinical Stem Cell Research Center, Peking University Third Hospital, Peking University, Beijing, 100191, China.

Angiogenesis describes the sprouting of blood vessels from existing vasculatures and it plays a pivotal role in disease progress such as diabetes, age-related macular degeneration and cancer. However, the most widely used anti-angiogenic agents targeting vascular endothelial growth factor (VEGF) pathway still lacked of specificity and therapeutic efficacy. To establish a method suitable for high-throughput drug screening and faithfully recapitulate the feature of in vivo angiogenesis, we generated a PECAM1-mRuby3-secNluc; ACTA2-EGFP dual reporter human pluripotent stem cell (hPSC) line and utilizing the cell line to establish a visualized and quantifiable in vitro angiogenesis model with stem cell-derived vascular organoid.

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Latent fingerprints (LFPs) are invisible impressions that need to be developed before being used for criminal investigation; however, existing fingerprint visualization techniques face challenges, such as complex preparation and poor contrast. To advance practical fingerprint detection, green-emissive micron-sized curcumin/kaolin composites were synthesized a facile and cost-effective one-step physical cross-linking method, which exhibited unprecedented performance in developing diversified marks, including LFPs, knuckle prints, palm prints, and footprints, with clear three-level details on various substrates. Notably, the powders successfully developed LFPs that were aged for 30 days and even up to 100 days, meeting the stringent requirements for comprehensive forensic application.

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The morphology and kinetics of the crystal growth front have been poorly explored at the particle level. Here, we experimentally observe the crystal growth front in liquid with single-particle kinetics using colloid systems and reveal a surface layer of polymorphic crystal near the solid-solid transition when the two crystals form a low-energy coherent interface. The thickness of the surface crystal can exceed 50 particles and grows logarithmically with the temperature as approaching the solid-solid transition which follows premelting theory.

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Chiral Phonons Induced from Spin Dynamics via Magnetoelastic Anisotropy.

Phys Rev Lett

December 2024

International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China.

Article Synopsis
  • The proposed mechanism generates chiral phononlike excitations through magnetoelastic couplings without needing magnetic fields or out-of-plane magnetization.
  • By analyzing a triangular lattice ferromagnet, the research reveals how lattice symmetry influences chirality, linking it to topological phonon classes.
  • The study suggests potential applications in spintronics and phononics, emphasizing the experimental viability of measuring phonon magnetization and thermal Hall conductivity in anisotropic magnets.
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Background: The global burden of metabolic diseases is increasing, but estimates of their impact on primary liver cancer are uncertain. We aimed to assess the global burden of primary liver cancer attributable to metabolic risk factors, including high body mass index (BMI) and high fasting plasma glucose (FPG) levels, between 1990 and 2021.

Methods: The total number and age-standardized rates of deaths and disability-adjusted life years (DALYs) from primary liver cancer attributable to each metabolic risk factor were extracted from the Global Burden of Disease Study 1990-2021.

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Aims: Caution around the COVID-19 pandemic resulted in visitation restrictions to prevent the spread of the virus among vulnerable older persons living in long-term care (LTC), which posed a threat to individual well-being and family togetherness across the globe. The purpose of this study was to explore family caregiver's experience of having a person who is living with dementia residing in a long-term care facility during the COVID-19 pandemic.

Design: Qualitative descriptive study using constructivist grounded theory (GT) methodology.

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Background: Sense of coherence (SoC) is a core concept of 'salutogenesis' in positive psychology, correlated with emotional distress and disease development in adults with chronic disease and older adults. A diversity of non-pharmacological interventions (NPIs) has been developed to enhance SoC, but research findings are conflicting and the adequacy of sample sizes is uncertainty.

Objective: This paper aimed to explore appropriate interventions, evaluate the effectiveness of these SoC interventions and verify the statistical robustness and reliability of pooled results.

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Who Can Help Me? Citizens' Help-Seeking on Weibo During the Shanghai Lockdown.

Disaster Med Public Health Prep

January 2025

School of Journalism and Communication, Shandong University, Jinan250100, China.

Objective: In the context of the Omicron-induced lockdown in Shanghai, this paper investigated the appeals for assistance by citizens on Weibo, aiming to understand their principal challenges and immediate needs.

Methods: This paper collected Weibo posts ( 1040) containing the keyword "Shanghai Anti-epidemic Help" during the citywide lockdown. The online help requests from Shanghai citizens were analyzed across 7 dimensions, including the help sought, level of urgency, help recipient, the intended beneficiary of the help, expression, position, and emotion.

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Introduction: Adolescents' information management behaviors involve calibrating interactions between the self and parents, which could serve as either risk or protective factors for self-esteem. Since a sense of control over life outcomes is a protective factor for overall well-being, it might account for links between youth information management and self-esteem. This longitudinal study examined whether youth's sense of control mediated associations between concealment and voluntary disclosure and their self-esteem, at both the between- and within-person levels.

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Intramolecular Repulsive Interactions Enable High Efficiency of NIR-II Aggregation-Induced Emission Luminogens for High-Contrast Glioblastoma Imaging.

ACS Nano

January 2025

Clinical Translational Research Center of Aggregation-Induced Emission, School of Medicine, The Second Affiliated Hospital, School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong, Shenzhen (CUHK-Shenzhen), Guangdong 518172, China.

Strategies to acquire high-efficiency luminogens that emit in the second near-infrared (NIR-II, 1000-1700 nm) range are still rare due to the impediment of the energy gap law. Herein, a feasible strategy is pioneered by installing large-volume encumbrances in a confined space to intensify the repulsive interactions arising from overlapping electron densities. The experimental results, including smaller coordinate displacement, reduced reorganization energy, and suppressed internal conversion, demonstrate that the repulsive interactions assist in the inhibition of radiationless deactivation.

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Background: Mate-pair sequencing detects both balanced and unbalanced structural variants (SVs) and simultaneously informs in relation to both genomic location and orientation of SVs for enhanced variant classification and clinical interpretation, while chromosomal microarray analysis (CMA) only reports deletion/duplication. Herein, we evaluated its diagnostic utility in a prospective back-to-back prenatal comparative study with CMA.

Methods: From October 2021 to September 2023, 426 fetuses with ultrasound anomalies were prospectively recruited for mate-pair sequencing and CMA in parallel for prenatal genetic diagnosis.

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Background: Disease-causing copy-number variants (CNVs) often encompass contiguous genes and can be detected using chromosomal microarray analysis (CMA). Conversely, CNVs affecting single disease-causing genes have historically been challenging to detect due to their small sizes.

Methods: A custom comprehensive CMA (Baylor College of Medicine - BCM v11.

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A comprehensive understanding of tumor heterogeneity, tumor microenvironment and the mechanisms of drug resistance is fundamental to advancing breast cancer research. While single-cell RNA sequencing has resolved the issue of "temporal dynamic expression" of genes at the single-cell level, the lack of spatial information still prevents us from gaining a comprehensive understanding of breast cancer. The introduction and application of spatial transcriptomics addresses this limitation.

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