160,238 results match your criteria: "Singapore; National Centre for Infectious Diseases[Affiliation]"

We report on a case of a 67-year-old male who was referred to our care with persistent aldosteronism post adrenalectomy. Biochemical failure after surgery is rare after surgery for primary aldosteronism (PA). Persistent hypokalaemia and raised aldosteronism is an indication of treatment failure after surgery.

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A 75-year-old female presented with fasting hypoglycemic episodes. A supervised fast ended at 72 hours fulfilling Whipple triad, with suppressed insulin and C-peptide levels, but discordantly suppressed serum β-hydroxybutyrate levels. After 21 months of recurring symptoms, a repeat fast ended at 48 hours with Whipple triad, suppressed serum β-hydroxybutyrate level, and borderline nonsuppressed C-peptide level, suggesting endogenous hyperinsulinism.

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The tightly-regulated spatial and temporal distribution of zinc ion concentrations within cellular compartments is controlled by two groups of Zn transporters: the 14-member ZIP/SLC39 family, facilitating Zn influx into the cytoplasm from the extracellular space or intracellular organelles; and the 10-member ZnT/SLC30 family, mobilizing Zn in the opposite direction. Genetic aberrations in most zinc transporters cause human syndromes. Notably, previous studies demonstrated osteopenia and male-specific cardiac death in mice lacking the ZnT5/ zinc transporter, and suggested association of two homozygous frameshift variants with perinatal mortality in humans, due to hydrops fetalis and hypertrophic cardiomyopathy.

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A Pilot Randomized Controlled Trial to Examine the Impact of a Therapy Dog Intervention on Loneliness in Hospitalized Older Adults.

Innov Aging

September 2024

Department of Clinical Sciences, Center for Animals and Public Policy, Cummings School of Veterinary Medicine, Tufts University, North Grafton, Massachusetts, USA.

Background And Objectives: Loneliness is linked to significant health threats and is potentially more dangerous than obesity; it affects as many as 29% of noninstitutionalized older adults. Loneliness is exacerbated for those who require inpatient rehabilitation, are displaced from their social networks, spend little time receiving therapy, and are physically inactive and socially isolated. Emerging evidence suggests that companion animals provide a number of health and well-being benefits and that interacting with a trained therapy dog may reduce loneliness.

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Highly Selective AIEgen-Based "Turn On" Fluorescent Imaging for Inflammation Detection.

Luminescence

January 2025

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, China.

Hypochlorous acid (HClO) is released by immune cells in the immune system, and it helps the body fight off infections and inflammation by killing bacteria, viruses, and other pathogens. However, tissue damage or apoptosis may also be induced by excess HClO. On this basis, we designed the probe TPE-NS by choosing tetraphenylethylene (TPE) as the luminescent unit and dimethylthiocarbamoyl chloride as the recognition site.

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This study introduces a sustainable biological approach for synthesizing silver nanoparticles (AgNPs) using Conocarpus seeds, aimed at improving the adsorption and photocatalytic degradation of methylene blue (MB) in wastewater treatment. The photocatalytic efficiency of AgNPs, synthesized under varying concentrations of silver nitrate (AgNO) and pH levels, was evaluated, together with the effectiveness of a photocatalytic reactor. The synthesized samples were characterized using scanning electron microscopy (SEM), thermogravimetric analysis (TGA), Fourier-transform infrared (FT-IR) spectroscopy, and atomic force microscopy (AFM).

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Background: There is limited understanding of how temporomandibular disorder (TMD) symptoms, psychological distress, and well-being are related to each other and to OHRQoL in Chinese young adults.

Objectives: This study aimed to identify correlations between TMD symptom severity, psychological status, and OHRQoL while also examining factors associated with low OHRQoL.

Methods: Participants, recruited from a major university in the capital city, completed a survey that included demographics, the Chinese versions of the expanded five TMD symptoms (5Ts) screener, Depression, Anxiety, Stress Scales-21 (DASS-21), Ryff's Scales of Psychological Well-being-18 (SPWB-18), and Oral Health Impact Profile for TMDs (OHIP-TMD).

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Background: Improving functioning in adults with major depressive disorder (MDD) and bipolar disorder (BD) is a priority therapeutic objective.

Methods: This retrospective post hoc secondary analysis evaluated 108 patients with MDD or BD receiving the antidepressants vortioxetine, ketamine, or infliximab. The analysis aimed to determine if changes in objective or subjective cognitive function mediated the relationship between depression symptom severity and workplace outcomes.

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Crisis is Opportunity: Lessons from the COVID-19 Pandemic.

Cardiovasc Intervent Radiol

January 2025

Department of Vascular and Interventional Radiology, Singapore General Hospital, Academia Level 4, 20 College Road, Singapore, 169856, Singapore.

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Geologic records of tropical cyclones (TCs) in low-energy, back-barrier environments are established by identifying marine sediments via their allochthonous biogeochemical signal. These records have the potential to reconstruct TC intensity and frequency through time. However, modern analog studies are needed to understand which biogeochemical indicators of overwash sediments are best preserved and how post-depositional changes may affect their preservation.

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Wireless microwave-to-optical conversion via programmable metasurface without DC supply.

Nat Commun

January 2025

State Key Laboratory of Millimeter Waves, School of Information Science and Engineering, Southeast University, Nanjing, China.

Microwave-optical interaction and its effective utilization are vital technologies at the frontier of classical and quantum sciences for communication, sensing, and imaging. Typically, state-of-the-art microwave-to-optical converters are realized by fiber and circuit approaches with multiple processing steps, and external powers are necessary, which leads to many limitations. Here, we propose a programmable metasurface that can achieve direct and high-speed free-space microwave-to-laser conversion.

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Divergent roles of mA in orchestrating brown and white adipocyte transcriptomes and systemic metabolism.

Nat Commun

January 2025

Section of Islet Cell and Regenerative Biology, Joslin Diabetes Center; Department of Medicine, BIDMC; Harvard Stem Cell Institute, Harvard Medical School, Boston, MA, USA.

N-methyladenosine (mA) is among the most abundant mRNA modifications, yet its cell-type-specific regulatory roles remain unclear. Here we show that mA methyltransferase-like 14 (METTL14) differentially regulates transcriptome in brown versus white adipose tissue (BAT and WAT), leading to divergent metabolic outcomes. In humans and mice with insulin resistance, METTL14 expression differs significantly from BAT and WAT in the context of its correlation with insulin sensitivity.

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Aim: We aimed to identify enablers and barriers of using primary care routine data for healthcare research, to formulate recommendations for improving efficiency in knowledge discovery.

Background: Data recorded routinely in primary care can be used for estimating the impact of interventions provided within routine care for all people who are clinically eligible. Despite official promotion of 'efficient trial designs', anecdotally researchers in the Asthma UK Centre for Applied Research (AUKCAR) have encountered multiple barriers to accessing and using routine data.

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Aims: This study aims to identify factors associated with mental health literacy (mental health knowledge and attitudes towards mental health and help-seeking behaviours), depression and anxiety amongst adolescents, and test the hypothesised model by examining the interrelationships between these outcomes.

Design: Cross-sectional descriptive quantitative research.

Methods: Using convenient sampling, 615 adolescents from four public schools completed online questionnaires measuring mental health literacy, depression, and anxiety.

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Topic Importance: Accurate assessment of a patient's volume status is crucial in many conditions, informing decisions on fluid prescribing, vasoactive agents, and decongestive therapies. Determining a patient's volume status is challenging, due to limitations in examination and investigations and the complexities of fluid homeostasis in disease states. Point-of-care ultrasound (POCUS) is useful in assessing hemodynamic parameters related to volume status, fluid responsiveness, and fluid tolerance.

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Formation of I+III supercomplex rescues respiratory chain defects.

Cell Metab

January 2025

Cardiovascular and Metabolic Diseases, Duke-NUS Medical School, Singapore, Singapore. Electronic address:

Mitochondrial electron transport chain (ETC) complexes partition between free complexes and quaternary assemblies known as supercomplexes (SCs). However, the physiological requirement for SCs and the mechanisms regulating their formation remain controversial. Here, we show that genetic perturbations in mammalian ETC complex III (CIII) biogenesis stimulate the formation of a specialized extra-large SC (SC-XL) with a structure of I+III, resolved at 3.

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Impact of local government environmental attention on corporate total factor productivity: Evidence from 288 Chinese cities.

J Environ Manage

January 2025

Center for Energy Environmental Management and Decision-Making, China University of Geosciences, Wuhan, 430074, China; School of Economics and Management, China University of Geosciences, Wuhan, 430074, China. Electronic address:

To improve the effectiveness of government environmental attention on resource allocation, this study proposes a measurement framework using text analysis and an unsupervised Word2vec model to quantify local government environmental attention of 288 Chinese cities. We further examine its impact on total factor productivity (TFP) of China's listed firms from 2010 to 2021 using the high-dimensional fixed-effects and panel quantile regression models. The findings show that: (1) Local government environmental attention contributes positively to TFP, with each unit increase raising TFP by approximately 1.

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Preliminaries to artificial consciousness: A multidimensional heuristic approach.

Phys Life Rev

January 2025

Institute of Intelligent Systems and Robotics, CNRS, Sorbonne University, Paris, France.

The pursuit of artificial consciousness requires conceptual clarity to navigate its theoretical and empirical challenges. This paper introduces a composite, multilevel, and multidimensional model of consciousness as a heuristic framework to guide research in this field. Consciousness is treated as a complex phenomenon, with distinct constituents and dimensions that can be operationalized for study and for evaluating their replication.

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Background: Working from home during the Covid-19 pandemic was perceived differently by men and women working in STEM fields. The aim of this paper is to highlight the unexpected benefits generated by working from home during the pandemic.

Methods: Qualitative methodology was used to analyze data, collected via survey.

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Right ventricular injury (RVI) in respiratory failure receiving veno-venous extracorporeal membrane oxygenation (VV ECMO) is associated with significant mortality. A scoping review is necessary to map the current literature and guide future research regarding the definition and management of RVI in patients receiving VV ECMO. We searched for relevant publications on RVI in patients receiving VV ECMO in Medline, EMBASE, and Web of Science.

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Purpose: We describe an atypical presentation of an 11-year-old female with enhanced S-cone syndrome (ESCS).

Methods: Case report. The patient underwent a thorough ophthalmic examination and investigations such as colour fundus photography, optical coherence tomography, fundus autofluorescence, fluorescein and indocyanine angiography, an electroretinogram and genetic testing.

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Dynamic Peptide Nanoframework-Guided Protein Coassembly: Advancing Adhesion Performance with Hierarchical Structures.

J Am Chem Soc

January 2025

Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China.

Hierarchical structures are essential in natural adhesion systems. Replicating these in synthetic adhesives is challenging due to intricate molecular mechanisms and multiscale processes. Here, we report three phosphorylated peptides featuring a hydrophobic self-assembly motif linked to a hydrophilic phosphorylated sequence (pSGSS), forming peptide fibril nanoframeworks.

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Background: Breast cancer is the most common cancer in women, and mammogram screening can reduce breast cancer mortality. Healthcare providers' perspectives can have an impact on encouraging females to attend mammogram screening.

Objective: To understand healthcare providers' (HCPs) perspectives in initiating discussion on mammogram screening, and their perceived barriers and enablers to screening in women.

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The impacts of degradation and deforestation on tropical forests are poorly understood, particularly at landscape scales. We present an extensive ecosystem analysis of the impacts of logging and conversion of tropical forest to oil palm from a large-scale study in Borneo, synthesizing responses from 82 variables categorized into four ecological levels spanning a broad suite of ecosystem properties: (i) structure and environment, (ii) species traits, (iii) biodiversity, and (iv) ecosystem functions. Responses were highly heterogeneous and often complex and nonlinear.

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