Publications by authors named "S-C Chan"

Background: Left ventricular ejection fraction (LVEF) is relatively indiscriminate for prognosis in patients with preserved or mildly reduced LVEF (>40%) following myocardial infarction (MI). This study sought to determine the value of guideline-based assessment of diastolic dysfunction (DD) in predicting long-term all-cause and cardiac mortality in patients with a first-ever MI and LVEF>40%.

Methods: A retrospective single centre study involving 2234 patients with a first-ever MI (STEMI or NSTEMI) with LVEF>40% was performed.

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There is a new awareness of the widespread nature of metabolic dysfunction-associated steatotic liver disease (MASLD) and its connection to cardiovascular disease (CVD). This has catalyzed collaboration between cardiologists, hepatologists, endocrinologists, and the wider multidisciplinary team to address the need for earlier identification of those with MASLD who are at increased risk for CVD. The overlap in the pathophysiologic processes and parallel prevalence of CVD, metabolic syndrome, and MASLD highlight the multisystem consequences of poor cardiovascular-liver-metabolic health.

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Radioimmunotherapy (RIT) with α-particle-emitting, Ac complexed to trastuzumab may offer an alternative treatment for patients who progress on HER2-targeted therapies. Moreover, RIT with [Ac]Ac-DOTA-trastuzumab could be combined with SPECT/CT imaging with [In]In-DOTA-trastuzumab in a theranostic approach. In this study, we compared DOTA-conjugated trastuzumab IgG, F(ab') or Fab complexed to In or Ac for SPECT/CT imaging and α-particle RIT of subcutaneous (s.

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  • * In a sample of 382 Asian women planning to conceive, the research identifies a new liver fat cutoff of 2.07% for diagnosing MetS, with trends indicating worsened MetS traits and plasma metabolomic changes as liver fat increases.
  • * Results show that preconception liver fat levels significantly correlate with the risk of gestational diabetes, with moderate liver fat (2.07% to 5.56%) doubling and high liver fat (≥5.56%) increasing the risk seven
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Existing microbiota databases are biased toward adult samples, hampering accurate profiling of the infant gut microbiome. Here, we generated a metagenome-assembled genome inventory for children (MAGIC) from a large collection of bulk and viral-like particle-enriched metagenomes from 0 to 7 years of age, encompassing 3,299 prokaryotic and 139,624 viral species-level genomes, 8.5% and 63.

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Background: The objective of this research was the development and evaluation of Pb-labelled panitumumab (Pb-PSC-panitumumab) as an immuno-SPECT radioligand for the detection of EGFR + head and neck squamous cell carcinoma (HNSCC) in a patient-derived xenograft (PDX) mouse model. The 51.9 h physical half-life and favourable γ-emission (279 keV; 81%) of Pb offer an excellent opportunity for developing immuno-SPECT radioligands.

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The sebaceous gland (SG) is a vital appendage of the epidermis, and its normal homeostasis and function is crucial for effective maintenance of the skin barrier. Notch signaling is a well-known regulator of epidermal differentiation, and has also been shown to be involved in postnatal maintenance of SGs. However, the precise role of Notch signaling in regulating SG differentiation in the adult homeostatic skin remains unclear.

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  • Direct oral anticoagulants (DOACs) are now commonly used instead of vitamin K antagonists (VKAs) for preventing strokes in patients with atrial fibrillation.
  • However, there are specific scenarios where VKAs might still be more suitable, particularly in patients with rheumatic mitral stenosis, high body mass index, frailty, or those who have had a stroke while on a DOAC.
  • The text uses case studies to highlight evidence and reasoning for choosing VKAs over DOACs in these select situations.
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Immunotherapy has shown promise for treating patients with autoimmune diseases or cancer, yet treatment is associated with adverse effects associated with global activation or suppression of T cell immunity. Here, we developed antigen-presenting nanoparticles (APNs) to selectively engineer disease antigen (Ag)-specific T cells by mRNA delivery. APNs consist of a lipid nanoparticle core functionalized with peptide-major histocompatibility complexes (pMHCs), facilitating antigen-specific T cell transfection through cognate T cell receptor-mediated endocytosis.

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Viral infections can cause cellular pathway derangements, cell death, and immunopathological responses, leading to host inflammation. Short-chain fatty acids (SCFAs), produced by the microbiota, have emerged as a potential therapeutic for viral infections due to their ability to modulate these processes. However, SCFAs have been reported to have both beneficial and detrimental effects, necessitating a comprehensive understanding of the underlying mechanisms.

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Background: Blood pressure (BP)-lowering effects of structured exercise are well-established. Effects of 24-hour movement behaviors captured in free-living settings have received less attention. This cross-sectional study investigated associations between a 24-hour behavior composition comprising 6 parts (sleeping, sedentary behavior, standing, slow walking, fast walking, and combined exercise-like activity [eg, running and cycling]) and systolic BP (SBP) and diastolic BP (DBP).

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The reproducibility in microbiome studies is limited due to the lack of one gold-standard operating procedure. The aim of this study was to examine the impact of protocol variations on microbiome composition using metagenomic data sets from a single center. We assessed the variation in a data set consisted of 2,722 subjects, including 9 subcohorts harboring healthy subjects and patients with various disorders, such as inflammatory bowel disease, colorectal cancer, and type 2 diabetes.

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  • Researchers developed a microbiome-based diagnostic test for inflammatory bowel disease (IBD) by analyzing 5,979 fecal samples, identifying significant bacterial alterations related to IBD.* ! * The study created diagnostic models using ten bacterial species for ulcerative colitis and nine for Crohn's disease, achieving high accuracy (areas under the curve >0.90) in distinguishing IBD from healthy controls.* ! * A new multiplex droplet digital PCR test was also developed, which outperformed the standard fecal calprotectin test, indicating the potential for a noninvasive multibacteria biomarker panel in IBD diagnosis.* !
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  • The study evaluates the long-term performance and safety of the extravascular implantable cardioverter-defibrillator (EV ICD) after initial findings showed its effectiveness for 6 months.
  • A total of 316 patients were enrolled, with a successful implant in 299 cases, experiencing various arrhythmic events that were effectively treated using antitachycardia pacing (ATP) and shocks.
  • The results indicated high success rates for both ATP (77.1%) and shock therapy (100%), with low rates of complications and inappropriate shocks over the three-year study period.
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Obesity disrupts glucose metabolism, leading to insulin resistance (IR) and cardiometabolic diseases. Consumption of cow's milk and other dairy products may influence glucose metabolism. Within the complex matrix of cow's milk, various carbohydrates, lipids, and peptides act as bioactive molecules to alter human metabolism.

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  • The study aims to project cardiovascular disease (CVD) mortality trends and risk factors from 2025 to 2050 to aid healthcare planning.
  • Using historical data and Poisson regression, projections indicate a significant increase in CVD prevalence (90%), crude mortality (73.4%), and DALYs (54.7%), with ischaemic heart disease and high blood pressure as major contributors.
  • Despite a stable age-standardized CVD prevalence, the study underscores a concerning rise in crude mortality due to an aging population, prompting the need for effective healthcare strategies.
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Aims: To evaluate the effectiveness of mobile smoking cessation (SC) treatment with 1-week nicotine replacement therapy (NRT) sampling on recruitment and quitting outcomes.

Design: Two-arm cluster RCT (1:1 ratio), single-blinded, at 244 recruitment sessions in Hong Kong outdoor smoking hotspots from October 2018-December 2019.

Setting: Participant were recruited by ambassadors and treated at the mobile SC truck.

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Updates of SARS-CoV-2 vaccines are required to generate immunity in the population against constantly evolving SARS-CoV-2 variants of concerns (VOCs). Here we describe three novel in-silico designed spike-based antigens capable of inducing neutralising antibodies across a spectrum of SARS-CoV-2 VOCs. Three sets of antigens utilising pre-Delta (T2_32), and post-Gamma sequence data (T2_35 and T2_36) were designed.

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  • The study aims to enhance risk assessment for patients with mildly reduced or preserved left ventricular ejection fraction (LVEF) after a myocardial infarction (MI) by using a Combined Echo-Score instead of relying solely on LVEF.
  • The research analyzed data from over 3,000 MI patients and found that the Echo-Score, which incorporates multiple echocardiographic measures, was a better predictor of all-cause and cardiac mortality than LVEF alone.
  • The findings suggested that the Echo-Score's effectiveness was consistent even in groups with LVEF above 40% and 50%, indicating its potential for improving patient prognosis.
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  • This study investigates how the cancer treatment drug abiraterone affects the liver transport proteins OATP1B1 and OATP1B3, focusing on the use of coproporphyrin I (CP-I) as a biomarker to measure these effects.
  • The results showed that abiraterone inhibits the uptake of CP-I through OATP1B3 but not OATP1B1, with in vitro tests revealing a moderate inhibition constant and clinical simulations indicating no significant drug interaction.
  • Overall, the findings suggest that the risk of interaction between abiraterone and other drugs that rely on OATP1B transporters is low, meaning that OATP1B3 does
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  • This study investigates the impact of bystander CPR on survival rates for out-of-hospital cardiac arrests, analyzing data from over 623,000 cases between 2013 and 2022 in the US.
  • It finds that bystander CPR significantly improves survival chances across different racial and ethnic groups, but the effect is strongest in White and Native American individuals, and weakest in Black individuals.
  • Additionally, the positive association of bystander CPR with survival rates is higher in men compared to women, indicating a potential disparity in outcomes based on sex and race/ethnicity.
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  • A study forecasts a 91.2% increase in crude cardiovascular disease (CVD) mortality in Asia from 2025 to 2050, despite a 23.0% decrease in the age-standardized mortality rate.
  • Ischaemic heart disease and stroke will remain the top causes of mortality, with Central Asia experiencing the highest mortality rates while high systolic blood pressure is identified as the leading risk factor across most of Asia.
  • The research highlights the need for targeted health interventions due to the significant variations in CVD burden across different regions in Asia.
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Objective: The prognostic factors of diffuse GC patients were screened the prognostic nomogram was constructed, and the prediction accuracy was verified.

Methods: From 2006 to 2018, there were 2877 individuals pathologically diagnosed with diffuse gastric cancer; the clinicopathological features of these patients were obtained from the SEER database & randomly divided into a training cohort (1439) & validation cohort (1438).To create prognostic nomograms & choose independent prognostic indicators to predict the overall survival (OS) of 1, 3, & 5 years, log-rank & multivariate COX analysis were utilized & discrimination ability of nomogram prediction using consistency index and calibration curve.

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Background: Nocturnal hemodialysis (nHD) restores the attenuated brachial artery vasodilator responsiveness of patients receiving conventional intermittent hemodialysis (iHD). Its impact on coronary vasodilatation is unknown.

Methods: We evaluated 25 patients on hemodialysis who fulfilled transplant criteria: 15 on iHD (4-hour sessions, 3 d/wk) and 10 on nHD (≈40 h/wk over 8-10-hour sessions) plus 6 control participants.

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