Publications by authors named "Woo C"

Adenoid cystic carcinoma (ACC) rarely occurs in the nasolacrimal duct (NLD), and when it does, it has nonspecific manifestations. To the best of our knowledge, one case of ACC in the NLD has been reported in the literature. Herein, we report a second case of ACC in the left NLD, concerning a man in his late 60s.

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Congenital disorders of glycosylation (CDG) comprise a class of inborn errors of metabolism resulting from pathogenic variants in genes coding for enzymes involved in the asparagine-linked glycosylation of proteins. Unexpectedly to date, no CDG has been described for , encoding the alpha-1,2-glucosyltransferase catalyzing the final step of lipid-linked oligosaccharide biosynthesis. Genome-wide association studies (GWAS) of human traits in the UK Biobank revealed significant SNP associations with short sleep duration, reduced napping frequency, later sleep timing and evening diurnal preference as well as cardiac traits at a genomic locus containing a pair of paralogous enzymes and .

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Objective: Ankle-foot control is essential to maintain balance and gait stability. However, there has been limited evidence on the effect of ankle-foot exercises on balance and falls in older people. This study aimed to summarize the effects of ankle-foot exercises on ankle flexibility and strength, balance, mobility, and falls in older people, and to identify determining factors for ankle-foot exercises to improve balance and mobility.

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The long pentraxin 3 (PTX3), a marker of inflammation, has been associated with cardiovascular disease, obesity, and metabolic syndrome. Recently, elevated serum PTX3 levels have been linked to type 2 diabetes in obese patients with nonalcoholic fatty liver disease. Diabetes mellitus is a metabolic syndrome characterized by hyperglycemia resulting from insufficient insulin secretion or action.

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Background Application of multimodal large language models (LLMs) with both textual and visual capabilities has been steadily increasing, but their ability to interpret radiologic images is still doubted. Purpose To evaluate the accuracy of LLMs and compare it with that of human readers with varying levels of experience and to assess the factors affecting LLM accuracy in answering Image Challenge cases. Materials and Methods Radiologic images of cases from October 13, 2005, to April 18, 2024, were retrospectively reviewed.

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Objective: More than 130 susceptibility loci for rheumatoid arthritis (RA) have been identified with genome-wide association studies (GWAS). To investigate the genetic predisposition of Chinese anti-cyclic-citrullinated-peptides-antibody-positive RA, we carried out an exome sequencing study.

Methods: Patients were recruited from three major public hospitals in Singapore, Tan Tock Seng Hospital (TTSH), Singapore General Hospital and National University Health System.

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We developed a tailored 3D Agarose-well system integrated with reconstructed human skin equivalents to enhance skin penetration assessments. This system addresses common limitations in traditional trans-well reconstructions, such as dermal layer contraction and limited lateral diffusion, by entangling collagen fibrils within the Agarose-well. We evaluated the penetration behavior of three peptides, with and without skin-penetrating peptide (SPP) sequences, alongside adenosine, a known anti-wrinkle agent.

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We report a motility-induced pinning transition in the active Ising model for a self-propelled particle system with discrete symmetry. This model was known to exhibit a liquid-gas type flocking phase transition, but a recent study reveals that the polar order is metastable due to droplet excitation. Using extensive Monte Carlo simulations, we demonstrate that, for an intermediate alignment interaction strength, the steady state is characterized by traveling local domains, which renders the polar order short-ranged in both space and time.

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Pain is not a mere reflection of noxious input. Rather, it is constructed through the dynamic integration of current predictions with incoming sensory input. However, the temporal dynamics of the behavioral and neural processes underpinning this integration remain elusive.

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The presence of oxygen vacancies (V) in electrocatalysts plays a significant role in improving the selectivity and activity of CO reduction reaction (CORR). In this study, 1D material with large surface area is utilized to enable uniform V formation on the catalyst. 1D structured indium selenoiodide (InSeI) is synthesized and used as an electrocatalyst for the conversion of CO to formate.

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-Linked β--acetylglucosamine (O-GlcNAc) is an essential, dynamic monosaccharide post-translational modification (PTM) found on serine and threonine residues of thousands of nucleocytoplasmic proteins. The installation and removal of O-GlcNAc is controlled by a single pair of enzymes, O-GlcNAc transferase (OGT) and O-GlcNAcase (OGA), respectively. Since its discovery four decades ago, O-GlcNAc has been found on diverse classes of proteins, playing important functional roles in many cellular processes.

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Olfactory loss accompanies at least 139 neurological, somatic, and congenital/hereditary conditions. This observation leads to the question of whether these associations are correlations or whether they are ever causal. Temporal precedence and prospective predictive power suggest that olfactory loss is causally implicated in many medical conditions.

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Pain is a complex emotional experience that still remains challenging to manage. Previous functional magnetic resonance imaging (fMRI) studies have associated pain with distributed patterns of brain activity (i.e.

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Article Synopsis
  • Cytology (liquid-based cytology or LBC) has been a key method for cervical cancer screening, but HPV testing is becoming more common, prompting a comparison of these methods for cost-effectiveness.
  • A study involving 3,742 patients assessed sensitivity and specificity of primary LBC, primary HPV testing, and combined LBC plus HPV co-testing, revealing significant differences in diagnostic performance.
  • Results indicated that while the co-test had the highest sensitivity (97.5%), the primary LBC algorithm showed the best cost-benefit effect and better specificity, making it a strong option for cervical cancer screening.
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Previously, we demonstrated that auditory fear conditioning produces presynaptic potentiation at lateral to basal amygdala (LA-BA) synapses, which occludes high-frequency stimulation (HFS)-induced ex-vivo LTP. We also found that the HFS-induced ex-vivo LTP requires presynaptic hyperpolarization-activated cyclic nucleotide-gated (HCN) channel activity. In this study, we investigated whether HCN channels are necessary for auditory fear conditioning in vivo.

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Article Synopsis
  • Delayed-onset post-stroke cognitive decline (PSCD) can provide insights into cognitive impairment and dementia, potentially linked to amyloid pathology and cerebral small vessel disease (cSVD).
  • The study assessed patients who were cognitively normal after a stroke and identified those who experienced cognitive decline using MMSE scores and various imaging techniques.
  • Among the 208 patients, few showed significant differences in cSVD, with white matter hyperintensities affecting cognitive scores in those who declined, while amyloid positivity was rare, though some non-amyloid decliners exhibited correlation patterns related to cognitive outcomes.
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Background: Pharmacological inhibition of aryl hydrocarbon receptor (AhR) activation after ischemia alleviates cerebral ischemia/reperfusion (IR) injury.

Purpose: To investigate whether AhR antagonist administration after reperfusion was also effective in attenuating cerebral IR injury.

Material And Methods: A total of 24 Sprague-Dawley rats were divided into the sham-operated group (no IR), control group (IR), and 6,2',4'-trimethoxyflavone (TMF) group (IR + TMF administration), with 10 rats assigned to each group.

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Background: Detection and localization of cerebral microbleeds (CMBs) is crucial for disease diagnosis and treatment planning. However, CMB detection is labor-intensive, time-consuming, and challenging owing to its visual similarity to mimics. This study aimed to validate the performance of a three-dimensional (3D) deep learning model that not only detects CMBs but also identifies their anatomic location in real-world settings.

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Neuroimaging-based pain biomarkers, when combined with machine learning techniques, have demonstrated potential in decoding pain intensity and diagnosing clinical pain conditions. However, a systematic evaluation of how different modeling options affect model performance remains unexplored. This study presents the results from a comprehensive literature survey and benchmark analysis.

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Article Synopsis
  • The research investigates how the brain combines pain-related signals (cues and actual pain) to form the overall experience of pain.
  • Using advanced imaging techniques, the study found that different brain networks store information from pain cues and stimuli in specific areas, but only certain networks can integrate this information to recreate the reported pain levels.
  • This implies that the brain processes pain in a structured manner, with a focus on how various components work together to shape our perception of pain.
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With an increasing societal need for digital therapy solutions for poor mental health, we face a corresponding rise in demand for scientifically validated digital contents. In this study we aimed to lay a sound scientific foundation for the development of brain-based digital therapeutics to assess and monitor cognitive effects of social and emotional bias across diverse populations and age-ranges. First, we developed three computerized cognitive tasks using animated graphics: 1) an emotional flanker task designed to test attentional bias, 2) an emotional go-no-go task to measure bias in memory and executive function, and 3) an emotional social evaluation task to measure sensitivity to social judgments.

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C-Terminal cyclic imides are post-translational modifications (PTMs) that can arise from spontaneous intramolecular cleavage of asparagine or glutamine residues resulting in a form of irreversible protein damage. These protein damage events are recognized and removed by the E3 ligase substrate adapter cereblon (CRBN), indicating that these aging-related modifications may require cellular quality control mechanisms to prevent deleterious effects. However, the factors that determine protein or peptide susceptibility to C-terminal cyclic imide formation or their effect on protein stability have not been explored in detail.

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Botulinum neurotoxin-A (BoNT-A) injections are effective for focal spasticity. However, the impact on muscle strength is not established. This study aimed to investigate the effect of BoNT-A injections on muscle strength in adult neurological conditions.

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