159,903 results match your criteria: "Singapore; London School of Hygiene and Tropical Medicine[Affiliation]"

Direct Synthesis of Unprotected C-Glycosides via Photoredox Activation of Glycosyl Ester.

Org Lett

January 2025

School of Chemistry, Chemical Engineering, and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore.

Synthetic C-glycosides play a crucial role in molecular biology and medicine. With the surge of interest in C-glycosides and the demand to provide efforts with sufficient feedstock, it is highly significant to pursue novel methodologies to access C-glycosides in a concise and efficient manner. Here, we disclose an attractive strategy that diverges itself from conventional multistep reaction sequences involving the manipulations of protecting groups.

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Whole-exome sequencing association study reveals genetic effects on tumor microenvironment components in nasopharyngeal carcinoma.

J Clin Invest

January 2025

State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center - Zhongshan School of Medicine.

Nasopharyngeal carcinoma (NPC) presents a substantial clinical challenge due to the limited understanding of its genetic underpinnings. Here we conduct the largest scale whole-exome sequencing association study of NPC to date, encompassing 6,969 NPC cases and 7,100 controls. We unveil 3 germline genetic variants linked to NPC susceptibility: a common rs2276868 in RPL14, a rare rs5361 in SELE, and a common rs1050462 in HLA-B.

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Norovirus (NoV) infection is a leading cause of gastroenteritis and poses global health threats, with increasing incidence reported in immunocompromised individuals, which is further exacerbated by the globalization of the food industry. Eumelanin has demonstrated its potential in antiviral treatments, but its role in preventing viral infections remains underexplored. Therefore, in this study, we investigated the antiviral properties and potential mechanisms of self-assembled eumelanin nanoparticles (EmNPs) against Tulane virus (TuV), a surrogate with a similar infection mechanism to NoVs.

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Donor-specific antibodies (DSAs) targeting mismatched human leukocyte antigen (HLA) molecules are one of the principal threats to long-term graft survival in solid organ transplantation. However, many patients with long-term circulating DSAs do not manifest rejection responses, suggesting a degree of heterogeneity in their pathogenicity and related functional activity. Immunologic risk stratification of transplant recipients is complicated by challenges intrinsic to defining alloantibody responses that are potentially pathogenic versus those that are not.

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Maintenance of flower color dimorphism in (Rubiaceae): responses to fluctuating temperatures in a dolomite Karst region.

Front Plant Sci

December 2024

Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Karst Mountainous Areas of Southwestern China, School of Life Science, Guizhou Normal University, Guiyang, Guizhou, China.

Introduction: Flower color polymorphism is often attributed to selection pressures from Q9 pollinators or other non-pollinator stress factors. Generally, flower color polymorphism demonstrates effective acclimatization linked to either pollinator-mediated selection or pleiotropic effects.

Methods: To test these hypotheses in Ophiorrhiza japonica, we compared pollinator visitation frequencies and plant traits between pink and white morphs in Shibing, a dolomite Karst region recognized as a World Natural Heritage Site.

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This case series describes responses to faricimab treatment in opposite directions in different fluid compartments in four patients with polypoidal choroidal vasculopathy (PCV). Despite reductions in retinal fluid (SRF) and stable visual acuity following treatment, all patients developed retinal pigment epithelium (RPE) elevation. Over a 12-15 months follow-up, three patients exhibited a gradual decrease in RPE elevation, with one case resolving completely.

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This study introduces advancements in electrohydrodynamic (EHD) pumps and the development of a 3D-printable anti-swelling organohydrogel for soft robotics. Using digital light processing (DLP)technology, precise components with less than 1% size variation are fabricated, enabling a unique manifold pump array. This design achieves an output pressure of 90.

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Excitation-mode-selective emission through multiexcitonic states in a double perovskite single crystal.

Light Sci Appl

January 2025

Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, 999077, Hong Kong SAR, China.

Low-dimensional lead-free metal halide perovskites are highly attractive for cutting-edge optoelectronic applications. Herein, we report a class of scandium-based double perovskite crystals comprising antimony dopants that can generate multiexcitonic emissions in the ultraviolet, blue, and yellow spectral regions. Owing to the zero-dimensional nature of the crystal lattice that minimizes energy crosstalk, different excitonic states in the crystals can be selectively excited by ultraviolet light, X-ray irradiation, and mechanical action, enabling dynamic control of steady/transient-state spectral features by modulating the excitation modes.

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Stem cells reside in specialized microenvironments, termed niches, at several different locations in tissues. The differential functions of heterogeneous stem cells and niches are important given the increasing clinical applications of stem-cell transplantation and immunotherapy. Whether hierarchical structures among stem cells at distinct niches exist and further control aspects of immune tolerance is unknown.

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Physiotherapy and occupational therapy in rheumatoid arthritis: Bridging functional and comorbidity gaps.

Best Pract Res Clin Rheumatol

December 2024

Department of Rheumatology, Allergy and Immunology, Tan Tock Seng Hospital, Singapore; Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore. Electronic address:

Rheumatoid arthritis (RA) is a chronic, systemic inflammatory disease affecting a significant portion of the global population. Despite advancements in pharmacological treatments, the management of RA remains complex, particularly in regard to comorbidities such as cardiovascular disease and osteoporosis. Physiotherapy (PT) and occupational therapy (OT) are non-pharmacological approaches that play a critical role in the management of RA.

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Background And Objective: Patients receiving immune checkpoint blockade (ICB) therapy may experience periods of prolonged disease control without a need for systemic therapy. Treatment-free survival (TFS) is an important measure for this period, but no data are available for patients with metastatic renal cell carcinoma (mRCC) starting first-line agents. Our aim was to analyze TFS outcomes for patients with mRCC starting first-line therapy.

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Global consensus on optimal exercise recommendations for enhancing healthy longevity in older adults (ICFSR).

J Nutr Health Aging

December 2024

Faculty of Medicine and Health, School of Health Sciences and Sydney Medical School, University of Sydney, New South Wales, Australia, and Hinda and Arthur Marcus Institute for Aging Research, Hebrew SeniorLife, Roslindale, MA, United States.

Article Synopsis
  • Aging leads to physiological changes and increased disease vulnerability, culminating in higher mortality rates as individuals get older.
  • Regular physical activity (PA) and exercise can counteract aging effects, improve health span, and reduce the risk of chronic diseases such as heart disease and cancer.
  • Personalized exercise plans, including various forms of training like aerobic and resistance exercises, are essential for maintaining health and functionality in older adults, particularly those with age-related issues.
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Article Synopsis
  • The study highlights the ongoing challenges faced by ulcerative colitis (UC) patients in Japan despite existing treatments, focusing on their health-related quality of life (HRQoL) and productivity losses.
  • About 83.6% of participants were on non-biologic treatments, with a significant portion reporting persistent symptoms and a notable percentage experiencing anxiety and depression, which negatively impacted their work productivity by an average of 29.3%.
  • The results emphasize the need for new interventions to improve treatment outcomes as many patients still experience high disease burden and indirect costs.
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Previous research has found functional connectivity in various networks to be altered in psychopathy and has theorised a link between these networks and the self-control-related deficits observed in psychopathy. However, this theory has yet to be tested adequately and empirically. The present study investigated the association between psychopathy, self-control, and intrinsic functional connectivity in 179 healthy adults from the MPI Leipzig Mind Brain Body dataset.

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Exploring water quality variations and biofilm growth in a drinking water distribution system via a biofilm annular reactor series system and predictive modelling of residual chlorine.

Chemosphere

December 2024

NUS Environmental Research Institute, National University of Singapore, 5A Engineering Drive 1, Singapore 117411; Department of Civil & Environmental Engineering, National University of Singapore, 1 Engineering Drive 2, Singapore 117576. Electronic address:

The hydraulic conditions vary significantly across different segments of the drinking water distribution system (DWDS), leading to distinct variations in water quality throughout the system. Understanding these changes in water quality and biofilm development over time is crucial for enhancing drinking water management efficiency. This study focused on replicating the hydraulic conditions found in transmission and distribution pipelines within a specific pipeline path of the DWDS in Singapore using a biofilm annular reactor series system (BARSS).

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Rerouting charge transfer for pharmaceutical wastewater electrochemical treatment via interfacial cocatalyst modification.

J Hazard Mater

December 2024

Department of Environmental Engineering, College of Environmental & Resource Sciences,  Zhejiang University, Hangzhou, China; Key Laboratory of Water Pollution Control and Environmental Safety of Zhejiang Province, Hangzhou, China. Electronic address:

Electrochemical oxidation stands as a pivotal technology for refractory wastewater treatment. However, the high cost and low elemental abundance of commercial electrodes limit its widespread application. This work tries to address this by introducing a charge-transfer rerouting strategy via cocatalyst modification using earth-abundant elements.

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Preserving privacy in healthcare: A systematic review of deep learning approaches for synthetic data generation.

Comput Methods Programs Biomed

December 2024

Data Science and Artificial Intelligence Lab, Singapore General Hospital, Singapore. Electronic address:

Background: Data sharing in healthcare is vital for advancing research and personalized medicine. However, the process is hindered by privacy, ethical, and legal challenges associated with patient data. Synthetic data generation emerges as a promising solution, replicating statistical properties of real data while enhancing privacy protection.

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Acute Q fever diagnosis via paired serology is problematic because it requires follow-up for convalescent sample collection; as such, it cannot provide a diagnosis to inform a treatment decision at the time of acute presentation. Real-time polymerase chain reaction (PCR) may be a useful approach for the diagnosis of acute Q fever in endemic settings. Among febrile patients enrolled in a sentinel surveillance study for Q fever at two referral hospitals in Moshi, Tanzania, from 2012 to 2014, we analyzed those with paired sera for IgG to Coxiella burnetii (C.

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Magneto-responsiveness in living organisms, exemplified by migratory birds navigating vast distances, offers inspiration for soft robots and human-computer interfaces. However, achieving both high magneto-responsiveness and resilient mechanical properties in synthetic materials has been challenging. Here, we develop magneto-iono-elastomers (MINEs), combining exceptional magnetization [2.

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Direct Synthesis of Topology-Controlled BODIPY and CO2-Based Zirconium Metal-Organic Frameworks for Efficient Photocatalytic CO2 Reduction.

Angew Chem Int Ed Engl

January 2025

National University of Singapore, Department of Chemical and Biomolecular Engineering, 4 Engineering Drive 4, National University of Singapore, 117585, Singapore, SINGAPORE.

Boron dipyrromethene (BODIPY)-based zirconium metal-organic frameworks (Zr-MOFs) possess strong light-harvesting capabilities and great potential for artificial photosynthesis without the use of sacrificial reagents. However, their direct preparation has not yet been achieved due to challenges in synthesizing suitable ligands. Herein, we reported the first successful direct synthesis of BODIPY-based Zr-MOFs, utilizing CO₂ as a feedstock.

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Background: The complex interactions between an individual's drinking behavior and their social environment is crucial but understudied, particularly in mature adult populations. Our aim is to unravel these complexities by investigating how personal drinking patterns are related to those of one's social environment over time, and what the interplay is with personal factors such as occupational prestige and smoking behavior.

Method: The present study adopts an innovative graphical autoregressive (GVAR) panel network modeling approach to investigate the dynamics between personal drinking habits and social environmental factors, utilizing a comprehensive longitudinal dataset from the Framingham Heart Study with a large sample of predominantly mature adults (N = 1719-5718) connected within a social network.

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Objective: To pilot a digital health technologies ecosystem known as project SingaporeWALK (earables and pps for ommunity iving and nowledge) that build capacity in older adults, senior center managers, health coaches, and caregivers in using health technologies (eg, wearables, apps, exergames) collaboratively in a gamified way for active aging.

Materials And Methods: The SingaporeWALK ecosystem was set up through 3 initiatives: (1) co-developing technologies with stakeholders; (2) raising digital literacy and capacity building; and (3) cultivating community and intergenerational bonding for active aging through gamified technology use.

Results: Significant improvements in older adults' self-reported physical and mental health post-intervention were observed.

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Background: In endemic COVID-19, immunocompromised children are vulnerable until vaccinated but the optimal primary vaccination regime and need for booster doses remains uncertain.

Methods: We recruited 19 immunocompromised children (post-solid organ transplantation, have autoimmune disease or were on current or recent chemotherapy for acute lymphoblastic leukemia), and followed them from the start of primary vaccination with BNT162b2 mRNA SARS-CoV-2 until 1-year post-vaccination. We investigated the quality of vaccine immunogenicity, and longevity of hybrid immunity, in comparison to healthy children.

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Policy brief: Improving national vaccination decision-making through data.

Front Public Health

January 2025

Coalition for Life Course Immunisation, Brussels, Belgium.

Life course immunisation looks at the broad value of vaccination across multiple generations, calling for more data power, collaboration, and multi-disciplinary work. Rapid strides in artificial intelligence, such as machine learning and natural language processing, can enhance data analysis, conceptual modelling, and real-time surveillance. The GRADE process is a valuable tool in informing public health decisions.

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