Publications by authors named "Choo P"

Background: Post-stroke social networks are associated with functional recovery. However, there is little information on the social networks of stroke survivors and whether institutionalised and community-dwelling stroke survivors view their social relationships differently.

Purpose: To i) examine social networks of stroke survivors and any influencing sociodemographic factors, as well as to ii) compare differences between institutionalised and community-dwelling stroke survivors.

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Sortase-assembled pili contribute to virulence in many Gram-positive bacteria. In Enterococcus faecalis, the endocarditis and biofilm-associated pilus (Ebp) is polymerized on the membrane by sortase C (SrtC) and attached to the cell wall by sortase A (SrtA). In the absence of SrtA, polymerized pili remain anchored to the membrane (i.

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Introduction: The current study builds on the expertise of National Gallery Singapore and Nanyang Technological University Singapore (NTU) in developing and piloting an enhanced version of the Slow Art program, namely "Slow Art Plus" for mental health promotion.

Methods: A single-site, open-label, waitlist Randomized Control Trial (RCT) design comprising of a treatment group and waitlist control group was adopted (ClinicalTrials.gov ID: NCT05803226).

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This paper describes how branch lengths of anisotropic nanoparticles can affect interactions between grafted ligands and cell-membrane receptors. Using live-cell, single-particle tracking, we found that DNA aptamer-gold nanostar nanoconstructs with longer branches showed improved binding efficacy to human epidermal growth factor receptor 2 (HER2) on cancer cell membranes. Inhibiting nanoconstruct-HER2 binding promoted nonspecific interactions, which increased the rotational speed of long-branched nanoconstructs but did not affect that of short-branched constructs.

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Daptomycin is a last-line antibiotic commonly used to treat vancomycin-resistant Enterococci, but resistance evolves rapidly and further restricts already limited treatment options. While genetic determinants associated with clinical daptomycin resistance (DAP) have been described, information on factors affecting the speed of DAP acquisition is limited. The multiple peptide resistance factor (MprF), a phosphatidylglycerol-modifying enzyme involved in cationic antimicrobial resistance, is linked to DAP in pathogens such as methicillin-resistant Staphylococcus aureus.

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Objectives: In Chochinov's dignity model, living in the here and now (mindful living) is explicitly stated as a dignity-conserving practice. However, what facilitates mindful living remain unclear. This study aims to investigate the mechanisms of mindful living among Asian terminally ill patients.

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Objective: Stroke has a major impact on a person's life. While much research exists on stroke prevention and treatment, explorations into psychosocial recovery needs are lacking. This review critically consolidates the challenges and needs of stroke survivors and develops a trajectory that encapsulates their journey from illness to recovery.

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Antibiotic resistance critically limits treatment options for infection caused by opportunistic pathogens such as enterococci. Here, we investigate the antibiotic and immunological activity of the anticancer agent mitoxantrone (MTX) in vitro and in vivo against vancomycin-resistant (VRE). We show that, in vitro, MTX is a potent antibiotic against Gram-positive bacteria through induction of reactive oxygen species and DNA damage.

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Enterococcus faecalis virulence requires cell wall-associated proteins, including the sortase-assembled endocarditis and biofilm associated pilus (Ebp), important for biofilm formation in vitro and in vivo. The current paradigm for sortase-assembled pilus biogenesis in Gram-positive bacteria is that sortases attach substrates to lipid II peptidoglycan (PG) precursors, prior to their incorporation into the growing cell wall. Contrary to prevailing dogma, by following the distribution of Ebp and PG throughout the E.

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Oxidative stress is one of the common factors leading to age-related eye diseases in older adults. Factors such as high oxygen consumption, high concentration of polyunsaturated fatty acids, and cumulative exposure to high-energy visible light in the eyes, lead to excessive generation of reactive oxygen species, hence triggering apoptosis of ocular cells and giving rise to ophthalmic diseases. Dietary supplements such as carotenoids, anthocyanins, and vitamins have antioxidant properties which may be of benefit in retaining better vision or reversing vision impairment; thus, studies have been conducted to understand the role of dietary supplements in the treatment or prevention of ophthalmic diseases.

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Wound infections are often polymicrobial in nature, biofilm associated and therefore tolerant to antibiotic therapy, and associated with delayed healing. Escherichia coli and Staphylococcus aureus are among the most frequently cultured pathogens from wound infections. However, little is known about the frequency or consequence of E.

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Objectives: Xerostomia is a subjective sensation of dry mouth associated with many medications and increases the risk of tooth decay and other oral complications. The aim of this study was to identify unreported medications associated with dry mouth from the Australian Database of Adverse Event Notifications (ADAEN) from the Therapeutic Goods Administration (TGA) in Australia.

Methods: This was a descriptive retrospective study.

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Background: Stroke compromises the quality of life and wellbeing of stroke survivors and families as a whole. The unexpected caregiving responsibilities often cause psychological distress, overwhelming emotions, living losses and grief, and relational conflicts with stroke survivors. Despite the increasing research to better understand their needs, empirically sound and holistic psychosocial interventions for stroke caregivers are lacking.

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 Presuming that Alzheimer's disease (AD) might represent an antagonistic pleiotropic phenomenon derived from the evolvability of multiple amyloidogenic proteins, targeting such proteins simultaneously could enhance therapeutic efficacy. Furthermore, considering that amyloid-β (Aβ) immunotherapies during reproductive life stage might adversely decrease Aβ evolvability in an offspring's brain, the disease-modifying Aβ immunotherapies should be limited to post-reproductive time in lifespan. Thus, current Aβ immunotherapy strategies should be revised accordingly.

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Enterococcus faecalis is a frequent opportunistic pathogen of wounds, whose infections are associated with biofilm formation, persistence, and recalcitrance toward treatment. We have previously shown that E. faecalis wound infection persists for at least 7 days.

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Good's buffers can act both as nucleating and shape-directing agents during the synthesis of anisotropic gold nanostars (AuNS). Although different Good's buffers can produce AuNS shapes with branches that are oriented along specific crystallographic directions, the mechanism is not fully understood. This paper reports how an analysis of the intermediate structures during AuNS synthesis from HEPES, EPPS, and MOPS Good's buffers can provide insight into the formation of seedless AuNS.

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Background: SARS-CoV-2 can cause outbreaks in community- and hospital-based settings. The aim of this study was to provide a detailed epidemiologic account of a hospital-wide SARS-CoV-2 outbreak and provide a description of case evaluations, transmission networks and the interventions implemented to stem the outbreak.

Methods: We conducted a retrospective descriptive study of a hospital-wide SARS-CoV-2 outbreak at the Misericordia Community Hospital (Edmonton) from June 21 to Aug.

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Article Synopsis
  • Diabetes mellitus (DM) is a growing global health issue, particularly affecting younger women, and can lead to serious eye conditions like diabetic retinopathy (DR), which can threaten vision if not managed properly.
  • Pregnancy poses additional risks for women with DR, as baseline conditions can lead to severe complications, with 10% of women with early-stage DR progressing to more severe forms during this time.
  • Effective management strategies include prepregnancy counseling, careful monitoring during pregnancy, and selecting appropriate treatments while considering potential risks to both the mother and fetus.
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Background: Resistance training with pneumatic machines attenuates the age-associated loss in muscle strength and function in older adults. However, effectiveness of scaled-up pneumatic machine resistance training in the community is not known. We evaluated the effectiveness of a multi-site community-delivered 12-week pneumatic machine resistance programme (Gym Tonic (GT)) on muscle strength and physical function in older adults.

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Objectives: To determine a 10-year trend of survival, morbidities and care practices, and predictors of in-hospital mortality in very preterm neonates (VPTN, gestation 22 to <32 weeks) in the Malaysian National Neonatal Registry.

Design: Retrospective cohort study.

Setting: 43 Malaysian neonatal intensive care units.

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Rosai-Dorfman disease (RDD) is a rare, idiopathic histiocytic proliferative disorder. We report two cases of RDD related to the breast which showed common distinctive imaging characteristics which can help facilitate accurate diagnosis and appropriate management.

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Photosystem II (PS II) of oxygenic photosynthesis is found in the thylakoid membranes of plastids and cyanobacteria. The mature PS II complex comprises a central core of four membrane proteins that bind the majority of the redox-active cofactors. In cyanobacteria the central core is surrounded by 13 low-molecular-weight (LMW) subunits which each consist of one or two transmembrane helices.

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