20,737 results match your criteria: "Yong Loo Lin School of Medicine[Affiliation]"

Background: Individuals born preterm at very low birthweight (VLBW, < 1500 g) tend to attain a smaller adult body size compared with term-born peers but less is known regarding specific body composition characteristics.

Objectives: We aimed to assess whether adults born at VLBW have less beneficial body composition characteristics, potentially mediating the association between VLBW birth and cardiometabolic disease. Sibling controls were used to account for the potential influence of shared genetic and/or lifestyle factors.

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Identification and monitoring of cell heterogeneity from plasmid recombination during limonene production.

Appl Microbiol Biotechnol

January 2025

NUS Synthetic Biology for Clinical and Technological Innovation (SynCTI), National University of Singapore, Kent Ridge, 117456, Singapore.

Detecting alterations in plasmid structures is often performed using conventional molecular biology. However, these methods are laborious and time-consuming for studying the conditions inducing these mutations, which prevent real-time access to cell heterogeneity during bioproduction. In this work, we propose combining both flow cytometry and fluorescence-activated cell sorting, integrated with mechanistic modelling to study conditions that lead to plasmid recombination using a limonene-producing microbial system as a case study.

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Purpose: To investigate the aqueous proteomics and metabolomics in low-energy and high-energy femtosecond laser-assisted cataract surgery (FLACS).

Methods: In this prospective observational study, 72 patients were randomized to 3 groups: low-energy FLACS, high-energy FLACS, and conventional phacoemulsification (controls). Aqueous was collected after femtosecond laser treatment or at the beginning of surgery (controls).

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Gastric cancer (GC) is a major cause of global cancer mortality with high levels of heterogeneity. To explore geospatial interactions in tumor ecosystems, we integrated 2,138 spatial transcriptomic regions-of-interest (ROIs) with 152,423 single-cell expression profiles across 226 GC samples from 121 patients. We observed pervasive expression-based intratumor heterogeneity, recapitulating tumor progression through spatially localized and functionally ordered subgroups associated with specific immune microenvironments, checkpoint profiles, and genetic drivers such as SOX9.

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Altruism, an act of benefiting others at a cost to the self, challenges our understanding of evolution. This Perspective delves into the importance of altruism in cancer cells and its implications for therapy. Against the backdrop of existing knowledge on various social organisms found in nature, we explore the mechanisms underlying the manifestation of altruism within breast tumors, revealing a complex interplay of seemingly counteracting cancer signaling pathways and processes that orchestrate the delicate balance between cost and benefit underlying altruistic cooperation.

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Increased MASH-associated liver cancer in younger demographics.

Hepatol Commun

January 2025

Karsh Division of Gastroenterology and Hepatology, Comprehensive Transplant Center, and Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA.

Background: The incidence of cancer and the prevalence of metabolic disease and metabolic dysfunction-associated steatotic liver disease is increasing in young adults. However, updated global data on metabolic dysfunction-associated steatohepatitis (MASH)-associated primary liver cancer (PLC) in young adults remains scarce.

Methods: This study analyzed data from the Global Burden of Disease study between 2000 and 2021 to assess the age-standardized incidence, mortality, and disability-adjusted life years rates from MASH-associated PLC in young adults (15-49 y).

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The recent resurgence of mpox highlights the urgent need for rethinking vaccination strategies globally, underscored by the painful memories of past public health crises where delayed responses and inequitable vaccine distribution exacerbated the spread of infectious diseases. The inaugural APIC-ADVA Asia Pacific Summit on Infectious Diseases and Immunization, themed "Vaccination for All: Access, Confidence and Equity (ACE)", was held in Singapore from 31 October to 1 November 2023 in an attempt to present best practices and hard-won insights from battling COVID-19 and other pandemics in the Asia-Pacific region. This summit was co-convened by the Asia-Pacific Immunization Coalition (APIC) and Asia Dengue Voice and Action (ADVA).

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: The ketogenic diet (KD) is widely used for weight management by reducing appetite, enhancing fat oxidation, and facilitating weight loss. However, the high content of total and saturated fats in a conventional KD may elevate low-density lipoprotein (LDL)-cholesterol levels, a known risk factor for cardiovascular diseases, highlighting the need for healthier alternatives. This study aimed to investigate the effect of a newly developed Healthy Ketogenic Diet (HKD) versus an Energy-Restricted Diet (ERD) on weight loss and metabolic outcomes among adults with obesity.

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A Comparison of Three Automated Nucleic Acid Extraction Systems for Human Stool Samples.

Microorganisms

November 2024

Centre for Translational Medicine, Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 14 Medical Drive, Singapore 117599, Singapore.

Automated nucleic acid extractors are useful instruments for the high-throughput processing of bio-samples and are expected to improve research throughput in addition to decreased inter-sample variability inherent to manual processing. We evaluated three commercial nucleic acid extractors Bioer GenePure Pro (Bioer Technology, Hangzhou, China), Maxwell RSC 16 (Promega Corporation, Madison, WI, USA), and KingFisher Apex (ThermoFisher Scientific, Waltham, MA, USA) based on their DNA yield, DNA purity, and 16S rRNA gene amplicon results using both human fecal samples and a mock community (ZymoBIOMICS Microbial Community Standard (Zymo Research Corp., Irvine, CA, USA)).

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Loss of the glutathione-S-transferases Theta 2 (Gstt2) expression is associated with an improved response to intravesical , Bacillus Calmette-Guérin (BCG) immunotherapy for non-muscle-invasive bladder cancer (NMIBC) patients who receive fewer BCG instillations. To delineate the cause, Gstt2 knockout (KO) and wildtype (WT) C57Bl/6J mice were implanted with tumors before treatment with BCG or saline. RNA was analyzed via single-cell RNA sequencing (scRNA-seq) and real-time polymerase chain reaction (RT-PCR).

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: Two-dimensional and three-dimensional echocardiographic imaging are commonly used in assessing ischemic mitral regurgitation (IMR) and degenerative mitral regurgitation (DMR) in patients with mitral valve disease. However, the use of 4D echocardiographic imaging has not yet been reported. The objectives of this study were to explore the efficacy of utilizing 4D echocardiographic variables, determine papillary muscle displacement in patients with either IMR or DMR, and compare the differences in papillary muscle displacement between groups.

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Unlabelled: Traumatic brain injury (TBI) causes multiple cerebrovascular disruptions and oxidative stress. These pathological mechanisms are often accompanied by serious impairment of cerebral blood flow autoregulation and neuronal and glial degeneration.

Background/objectives: Multiple biochemical cascades are triggered by brain damage, resulting in reactive oxygen species production alongside blood loss and hypoxia.

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Cellular senescence has emerged as a fascinating frontier in biological research and now presents profound implications across diverse fields, from aging research to cancer therapy [...

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Background: Endoscopic assessment for the diagnosis of gastric cancer is limited by interoperator variability and lack of real-time capability. Recently, Raman spectroscopy-based artificial intelligence (AI) has been proposed as a solution to overcome these limitations.

Objective: To compare the performance of the AI-enabled Raman spectroscopy with that of high-definition white light endoscopy (HD-WLE) for the risk classification of gastric lesions.

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Introduction: Increasing age is associated with an increased incidence of necrotising fasciitis. In this study, we aimed to compare the clinical presentation, investigations, microbiology and clinical outcome in elderly (age ≥60 years) and nonelderly (age <60 years) patients with extremity necrotising fasciitis.

Methods: A retrospective review of patients with extremity necrotising fasciitis who were surgically treated between January 2005 and December 2021 was conducted.

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Background: Predicting dementia early has major implications for clinical management and patient outcomes. Yet, we still lack sensitive tools for stratifying patients early, resulting in patients being undiagnosed or wrongly diagnosed. Despite rapid expansion in machine learning models for dementia prediction, limited model interpretability and generalizability impede translation to the clinic.

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Transient hypothyroidism in a neonate following maternal exposure to vinblastine during pregnancy: a case report and review.

Front Pediatr

December 2024

Department of Neonatology, Khoo Teck Puat-National University Children Medical Institute, National University Health System, Singapore, Singapore.

Background: Vinblastine is a widely used chemotherapeutic agent for various cancers. We report a case of transient congenital hypothyroidism following maternal exposure to vinblastine during the third trimester of pregnancy and propose possible mechanisms of action.

Method: We utilized the CARE guidelines to report the case.

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Biotechnology Notes: A Year of Milestones.

Biotechnol Notes

November 2024

NUS Synthetic Biology for Clinical and Technological Innovation (SynCTI), National University of Singapore, Singapore.

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Background: Despite the reported efficacy of overground robotic exoskeleton (ORE) for rehabilitation of mobility post-stroke, its effectiveness in real-world practice is still debated. We analysed prospectively collected data from Improving Mobility Via Exoskeleton (IMOVE), a multicentre clinical implementation programme of ORE enrolling participants with various neurological conditions and were given options to choose between 12 sessions of ORE or conventional therapy (control).

Methods: This is analysis of participants under IMOVE who fulfilled the following criteria (i) primary diagnosis was stroke (ischemic, hemorrhagic; first or recurrent), (ii) onset of stroke was within 9 months and (iii) the intervention was during inpatient stay.

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Background: White matter hyperintensities (WMH) have been implicated in the pathogenesis of neuropsychiatric symptoms of dementia but the functional significance of WMH in specific white matter (WM) tracts is unclear. We investigate whether WMH burden within major WM fibre classes and individual WM tracts are differentially associated with different neuropsychiatric syndromes in a large multicentre study.

Method: Neuroimaging and neuropsychiatric data of seven memory clinic cohorts through the Meta VCI Map consortium were harmonised.

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Objective: Identification of patients with head-and-neck malignancies who are especially vulnerable to malnutrition is critical for optimizing outcomes. The objectives are; to correlate Bioelectrical-impendence-analysis (BIA) parameters with Subjective-Global-Assessment (SGA) scores, and determine the association of BIA parameters with common perioperative complications in patients undergoing head-and-neck surgery.

Study Design: Patients underwent formal SGA scoring and BIA preoperatively in a multidisciplinary allied health clinic.

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Medical misinformation (false health or medical-related information) has seen a rapid increase in volume recently, with the global surge in social media usage and further exacerbation by the COVID-19 pandemic. This may put more lives at stake, as misinformation is an often-cited reason that people make dangerous health choices, engage in harmful practices and reject beneficial health treatments. In this article, we explore the drivers and consequences, as well as suggest several strategies at the personal, educational and systemic level, for physicians to guide and communicate with patients who subscribe to medical misinformation.

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Molecular Mechanisms of Synergistic Effect of PRIMA-1 and Oxaliplatin in Colorectal Cancer With Different p53 Status.

Cancer Med

January 2025

Department of Gastroenterology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou, Jiangsu, People's Republic of China.

Article Synopsis
  • The study investigates combining PRIMA-1 with oxaliplatin (L-OHP) to enhance treatment efficacy for colorectal cancer (CRC) while addressing the drug's toxicity and resistance issues.
  • The results show that the combination therapy significantly improves cancer cell death and reduces cell migration and colony formation, regardless of p53 mutation status.
  • RNA-seq analysis reveals different cellular responses to the treatments based on p53 status, and in vivo studies confirm that the combination therapy enhances effectiveness and reduces toxicity compared to PRIMA-1 alone.
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Article Synopsis
  • Antidepressants, particularly Tricyclics (TCAs) and some new treatments, may increase the risk of cataracts, while others like Tetracyclics (TeCAs) and Monoamine Oxidase Inhibitors (MAOIs) appear to lower that risk.
  • Several types of antidepressants, including SSRIs and SNRIs, have been linked to an increased risk of glaucoma, with risk ratios (RORs) showing significant associations.
  • However, the study is limited by potential duplicate reports in the FDA database, and causality can't be definitively established. Overall, most antidepressants investigated were linked to lower cataract risk, but caution is needed in interpreting these findings
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Label noise is a common and important issue that would affect the model's performance in artificial intelligence. This study assessed the effectiveness and potential risks of automated label cleaning using an open-source framework, Cleanlab, in multi-category datasets of fundus photography and optical coherence tomography, with intentionally introduced label noise ranging from 0 to 70%. After six cycles of automatic cleaning, significant improvements are achieved in label accuracies (3.

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