Publications by authors named "Kok L"

This study examines the effects of gain-loss framing, messaging modality, peer influence, and individual factors such as social norms and self-efficacy on the attitudes and intentions to reduce sedentary behaviors among university students, specifically through (a) taking breaks and (b) taking 10,000 steps daily. We conducted a two-week health campaign field experiment on Instagram in January 2022, delivering ten posts with tailored messages to 284 university students in Singapore (valid N = 249). The participants were predominantly female (70.

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Background: Microglia, the resident immune cells of the central nervous system, play a critical role in maintaining neuronal health, but are often overlooked in traditional neuron-focused in vitro models.

New Method: In this study, we developed a novel co-culture system of human pluripotent stem cell (hPSC)-derived microglia and neurons to investigate how hPSC-derived microglia influence neuronal morphology and network activity. Using high-content morphological analysis and multi-electrode arrays (MEA), we demonstrate that these microglia successfully incorporate into neuronal networks and modulate key aspects of neuronal function.

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Linear scleroderma en coup de sabre is a rare subtype of localized scleroderma. It is typically characterized by linear sclerosis and atrophy of the skin and underlying dermis affecting the frontoparietal region above the brow. The linear sclerotic lesions rarely extend into the upper eyelid.

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Sickle cell disease is known to cause painful vaso-occlusive crises in long bones with large marrows. Orbital infarction is a rare complication of sickle cell disease and usually presents in children and adolescents with acute onset periocular swelling mimicking orbital cellulitis. We describe an atypical case of a 38-year-old man with homozygous sickle cell disease who presented with isolated, complete ptosis of his OD with minimal swelling.

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Article Synopsis
  • Mucoepidermoid carcinoma is a common malignancy in salivary glands, often linked to MAML2 gene rearrangement; primary cases in the nasopharynx are very rare.
  • A 70-year-old man was found to have nasopharyngeal mucoepidermoid carcinoma, and MAML2 translocation was confirmed through a specialized test.
  • Despite limited data, findings suggest that age and gender ratios in nasopharyngeal cases are similar to those in salivary glands, and most patients present with high-grade tumors, indicating a need for more research on MAML2's role in this cancer type.
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Article Synopsis
  • Researchers aim to better understand the protein-coding genome due to its importance in human health, while questioning what previous genomic studies may have overlooked regarding non-canonical open reading frames (ncORFs).
  • Over the last ten years, ncORFs have shown potential relevance in human cell types and diseases, but their impact on the human proteome was previously unclear, prompting a collaborative effort to analyze their protein-level evidence.
  • The study found that 25% of analyzed ncORFs contribute to translated proteins, resulting in over 3,000 new peptides from extensive mass spectrometry data, and established an annotation framework and public tools to support ongoing research in this area.
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Introduction: We aimed to describe a case of bilateral keratoconjunctivitis after exposure to the toxic sap of .

Case Report: A 76-year-old gentleman presented after exposure to whilst he was gardening. He had 6/12 visual acuity in his right eye, and 6/4 in his left.

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The transcription factor PsrA regulates fatty acid metabolism, the type III secretion system, and quinolone signaling quorum sensing system in . To explore additional roles of PsrA in , this study engineered a PAO1 strain to carry a recombinant plasmid with the gene (pMMB) and examined the impact of elevated expression to the bacterium. Transcriptomic analysis revealed that PsrA significantly downregulated genes encoding the master quorum-sensing regulators, RhlR and LasR, and influenced many quorum-sensing-associated genes.

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Macrophage migration inhibitory factor (MIF) is a proinflammatory cytokine that has roles in innate and adaptive human immune responses, as well as inflammation. MIF exerts its biological activity by binding to the cell surface receptor CD74 as well as intracellular signalling proteins. MIF also possesses keto-enol tautomerase activity.

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Background: Due to a heterogeneity of symptoms, a lack of an adequate diagnostic test, and a lack of awareness, diagnostic delay in endometriosis in primary care on average amounts to 35 months.

Aim: To determine which interventions are most feasible to reduce time to diagnosis in primary care, focusing on GPs' preferences, the intervention's content, design, and implementation.

Design & Setting: We conducted a qualitative study by performing focus groups with GPs and GP trainees between July and October 2021.

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This study aimed to explore the differences in attack-defense performance between the top and bottom teams for starting and bench players during the Tokyo Olympics men's basketball competition, to determine the relationship between the attack-defense performance of starting and bench players and the final competition rankings, as well as with each performance indicator. The rank-sum ratio (RSR) comprehensive evaluation was employed to describe the attack-defense performance of starting and bench players. Additionally, an independent sample t-test, Spearman Rho Correlation, and Pearson Correlation were conducted to test the differences and relationships between the various variables at a 0.

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Objective: This systematic review synthesizes the evidence of various interventions aiming to prevent muscu¬loskeletal complaints in professional musicians.

Methods: This study comprises a systematic review according to PRISMA guidelines. A database search was performed in Cochrane, Embase, and PubMed on 13 September 2022 without time and language restrictions.

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Article Synopsis
  • Ribosome profiling (Ribo-Seq) has revealed thousands of noncanonical open reading frames (ORFs) that might expand the number of human protein-coding sequences (CDSs) by up to 30%, increasing the count from approximately 19,500 to over 26,000.
  • * However, there are significant uncertainties about how many of these noncanonical ORFs actually produce functional proteins, with estimates varying widely from a few thousand to several hundred thousand.
  • * This research gap has left the genomics and proteomics communities excited but also in need of guidance on how to evaluate the coding potential of these noncanonical ORFs.*
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An optimal wound-healing hydrogel requires effective antibacterial properties and a favorable cell adhesion and proliferation environment. Althoughsilk fibroin (SF) possesses inherent wound-healing properties, it lacks these essential qualities. This study aimed to fabricate a novel photo-polymerizable hydrogel by utilizing SF's wound-healing efficiency and the epsilon-poly-L-lysine (EPL) antimicrobial activity.

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Study Design: This is a basic science, animal research study.

Objective: This study aims to explore, in rodent models, the effectiveness of systemic nonsteroidal anti-inflammatory drugs in reducing recombinant human bone morphogenetic protein-2 (rhBMP-2) induced neuroinflammation.

Summary Of Background Data: rhBMP-2 is increasingly used to augment fusion in lumbar interbody fusion surgeries, although it can cause complications including postoperative radiculitis.

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Article Synopsis
  • - Ribosome profiling (Ribo-seq) has revealed that there may be at least 7,000 non-canonical open reading frames (ORFs) in the human genome that could expand the number of recognized protein-coding sequences by 30% from around 19,500 to over 26,000.
  • - Despite the exciting possibilities for new coding regions, the scientific community faces challenges in verifying how many of these ORFs actually produce proteins, as estimates of their quantity range widely from a few thousand to several hundred thousand.
  • - The article discusses ongoing research on non-canonical ORFs, the use of ribosome profiling and immunopeptidomics to study them, and the need to understand the evidence required to classify
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The aim of this study was to evaluate whether radiologically defined sarcopenia, or a low skeletal muscle index (SMI), could be used as a practical biomarker for frailty and postoperative complications (POC) in patients with head and neck skin cancer (HNSC). This was a retrospective study on prospectively collected data. The L3 SMI (cm/m) was calculated with use of baseline CT or MRI neck scans and low SMIs were defined using sex-specific cut-off values.

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Ageing is associated with changes in the cellular composition of the immune system. During ageing, hematopoietic stem and progenitor cells (HSPCs) that produce immune cells are thought to decline in their regenerative capacity. However, HSPC function has been mostly assessed using transplantation assays, and it remains unclear how HSPCs age in the native bone marrow niche.

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Article Synopsis
  • - Essential thrombocytosis (ET) is a rare blood cancer with an annual incidence of about 1.5-2.5 cases per 100,000 people, often presenting first through thrombotic (clotting) or hemorrhagic (bleeding) issues, especially in younger patients under 40.
  • - A retrospective study found that many cases of ET in young adults were initially misdiagnosed, highlighting the need for cardiologists to be more aware of this condition in their practice.
  • - Key symptoms of ET include pain in the hands and feet (erythromelalgia) and itching after exposure to water (aquagenic pruritus), with treatment strategies varying depending on ischemia presence,
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4H leukodystrophy is a rare genetic disorder classically characterized by hypomyelination, hypodontia and hypogonadotropic hypogonadism. With the discovery that 4H is caused by mutations that affect RNA polymerase III, mainly involved in the transcription of small non-coding RNAs, patients with atypical presentations with mainly a neuronal phenotype were also identified. Pathomechanisms of 4H brain abnormalities are still unknown and research is hampered by a lack of preclinical models.

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We evaluated the extent of changes in training practices, recovery, mental health, and sleep patterns of athletes during the early COVID-19 lockdown in a single country-cohort. A total of 686 athletes (59% male, 41% female; 9% World Class, 28% International, 29% National, 26% State, 8% Recreational) from 50 sports (45% individual, 55% team) in Malaysia completed an online, survey-based questionnaire study. The questions were related to training practices (including recovery and injury), mental health, and sleep patterns.

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Prostaglandin E2 (PGE2) is an important maturation mediator for dendritic cells (DCs). However, increased PGE2 levels in the tumor exert immunosuppressive effects on DCs by signaling through two E-Prostanoid (EP) receptors: EP2 and EP4. Blocking EP-receptor signaling of PGE2 with antagonists is currently being investigated for clinical applications to enhance anti-tumor immunity.

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Background: In patients under <40 years, traditional cardiovascular (CV)-risk factors are a less likely cause of acute coronary syndromes (ACS) compared to older counterparts.

Aims: To estimate the prevalence of essential thrombocytosis (ET), a hematological disorder and less-prevalent risk factor, in young patients presenting with ACS.

Methods: We constructed a retrospective database of all patients <40 years (n=271) that had consecutively undergone coronary angiography (CAG) after their  ACS within our hospital within the last ten years (2010-2020) and had known thrombocyte counts (n=241).

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Introduction: This study aimed to explore common characteristics among top basketball teams, differentiate attacking and defensive performance between top and bottom teams, and correlate attacking and defensive performance with final competition rankings during the 2019 Men's Basketball World Cup, as well as to determine the relationship between performance indicators and the attacking and defensive performance. In addition, the study aimed to determine the attacking and defensive level of the top and bottom eight teams and find their existing problems and shortcomings, to further improve their competitive basketball strength, and also provided valid and reliable information for coaches to conduct targeted training in the future.

Methods: The rank-sum ratio (RSR) was employed to evaluate the attack, defense, and overall attacking and defensive performance between the top and bottom teams during the 2019 Men's Basketball World Cup.

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Chronic pruritus is a common symptom, associated with several severe medical conditions, great psychological burden, and reduced quality of life. It also poses socio-economic challenges concerning patients' work loss and healthcare costs. In Germany, medical rehabilitation programmes represent an integral part of the medical care of patients with chronic inflammatory skin diseases.

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