Publications by authors named "Jun Lai"

Background: Skeletal dysplasias are rare disorders affecting bone growth and development that impact functional performance. In Australia, the National Disability Insurance Scheme (NDIS) was rolled out in 2016 to support individuals with disabilities access reasonable and necessary supports to promote independence and quality of life. Anecdotally, Australians with skeletal dysplasias report challenges with accessing and using the NDIS but this has not previously been reported in the literature.

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Introduction: MCAM, alternatively referred to as CD146, is an integral membrane glycoprotein belonging to the immunoglobulin superfamily. However, its importance in the tumorigenesis of colorectal cancer is still partially understood. Therefore, this study was designed to investigate the significance of MCAM in colorectal cancer.

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Post-myocardial infarction (MI) cardiac remodeling ultimately causes heart failure. We explored how CUG-binding protein Elav-like family member 1 (CELF1) affected post-MI cardiac remodeling. Mice underwent MI induction by left anterior descending artery (LAD) ligation and short hairpin-CELF1, overexpressing-flavin-containing monooxygenase 2 (FMO2) lentivirus and transforming growth factor-β1 (TGF-β1) treatments.

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Introduction: Zinc plays a crucial role in glucose metabolism. The association between serum zinc and insulin resistance has recently been investigated as well, but the findings are inconsistent. The triglyceride-glucose index (TyG) is frequently utilized in epidemiological research to assess insulin resistance.

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Objective: Gliomas are a general designation for neuroepithelial tumors derived from the glial cells of the central nervous system. According to the histopathological and immunohistochemical features, the World Health Organization classifies gliomas into four grades. Bevacizumab is a monoclonal antibody targeting vascular endothelial growth factor that has been approved for the treatment of glioblastoma multiforme (GBM) as a second-line therapy.

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Traumatic brain injury (TBI) is a common traumatic event that imposes a significant burden on families and society. Lipocalin (LCN) is a class of multifunctional secreted lipoprotein molecules. This study aimed to explore the role and possible mechanism of LCN2 in TBI.

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Despite antiretroviral therapy (ART), HIV-1 persists in latently infected CD4 T cells, preventing a cure. Antigens drive the proliferation of infected cells, precluding latent reservoir decay. However, the relationship between antigen recognition and HIV-1 gene expression is poorly understood because most studies of latency reversal use agents that induce non-specific global T cell activation.

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Background: Phenotypic age (PhenoAge), a widely used marker of biological aging, has been shown to be a robust predictor of all-cause mortality and morbidity in different populations. Existing studies on biological aging have primarily focused on individual domains, resulting in a lack of a comprehensive understanding of the multi-systemic dysregulation that occurs in aging.

Methods: PhenoAge was evaluated based on a linear combination of chronological age (CA) and 9 clinical biomarkers in 952 multi-ethnic Asian women of reproductive age.

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Polyamines act as protective compounds directly protecting plants from stress-related damage, while also acting as signaling molecules to participate in serious abiotic stresses. However, the molecular mechanisms underlying these effects are poorly understood. Here, we utilized metabolome genome-wide association study to investigate the polyamine content of wild and cultivated tomato accessions, and we discovered a new gene cluster that drove polyamine content during tomato domestication.

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Background: Maternal feeding practices play a major role in children's dietary intakes. However, there is limited data on the associations between trajectories of dietary patterns (DPs) and patterns of maternal feeding practices during early childhood.

Methods: Using data from a multi-ethnic Asian cohort study, namely the Growing Up in Singapore Towards healthy Outcomes (GUSTO), dietary intakes were measured using Food Frequency Questionnaires in children at 18 months, 5 and 7 years of age.

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In the realm of skin injury management, the expedited closure of wounds, prevention of scar formation, and enhancement of the healing process are of critical significance. The creation of economical dressings that effectively facilitate swift wound sealing in the initial phase of skin trauma while curbing scar development represents a promising avenue for clinical utility. Within the context of this investigation, we synthesized a novel hydrogel composed of chitosan (CS), carboxylated poly(vinyl alcohol) (PVA-COOH) via a Schiff base reaction between carboxylated PVA and chitosan, yielding networks abundant in amide bonds.

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Article Synopsis
  • - Horizontal gene transfer (HGT) significantly influences the evolution of both prokaryotic and eukaryotic genomes, particularly in seed plants, where its patterns and adaptations remain underexplored.
  • - Researchers identified 1,150 foreign genes in 522 land plant genomes, indicating at least 322 distinct gene transfers from nonplant sources and showing uneven distribution of these transfers between seedless and seed plants.
  • - The study found that HGT-acquired genes in land plants tend to adapt by gaining introns, leading to higher expression levels and variations in guanine metabolism, which demonstrates HGT's important role in land plant evolution.
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  • Persistent gastrointestinal symptoms such as abdominal pain, nausea, and diarrhea may affect some patients after recovering from COVID-19, but the immune response in their gastrointestinal tracts is not well understood.
  • A study examined 95 COVID-19 patients, focusing on 11 with gastrointestinal issues, using advanced imaging techniques to analyze immune cell types and their distribution in the gut tissues.
  • Findings indicated significant inflammation in the duodenum, with increased CD68 macrophages and CD3CD4 T-cells; their interactions differ based on the presence of viral proteins, and specific gene patterns correlated with clinical symptoms and immune responses.
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  • USP52, a member of the deubiquitinase family, plays a critical role in colorectal cancer (CRC) by influencing immunotherapy effectiveness and immune evasion, suggesting a need for more research into its effects on patient outcomes.
  • Analysis of public databases revealed that USP52 is significantly overexpressed in CRC tissues, correlating with poor patient prognosis and a suppressed immune environment characterized by low immune cell infiltration.
  • The study highlights that high levels of USP52 are linked to reduced responsiveness to immunotherapy and chemotherapeutic drugs, along with a negative relationship to tumor mutation burden (TMB) and microsatellite instability (MSI), emphasizing its potential as a target for CRC therapy improvements.
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Background: It is unclear if improving diet quality after midlife could reduce the risk of physical frailty at late life. We aimed to associate changes in diet quality after midlife with physical frailty at late life.

Methods: Diet quality in 12,580 participants from the Singapore Chinese Health Study was assessed with the Dietary Approaches to Stop Hypertension (DASH) scores at baseline (1993-1998; mean age 53 years) and follow-up 3 (2014-2016; mean age 73 years).

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Current limitations in mechanical performance and foreign body reactions (FBR) often lead to implant failure, restricting the application of bioceramic scaffolds. This study presents a novel 3D-printed scaffold that combines the release of anti-inflammatory drugs with osteogenic stimulation. Initially, the inorganic and organic phases were integrated to ensure the scaffold's mechanical integrity through catechol chemistry and the electrostatic interactions between tannic acid and quaternary ammonium chitosan.

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Atrial fibrillation (AF) is the most common cardiac arrhythmia and can cause serious complications. Several studies have shown that neutrophils may influence AF progression. However, the key genes related to neutrophils in AF have not been fully elucidated.

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Introduction: Obesity has previously been correlated with an elevated risk of reproductive system diseases in women. The waist-hip ratio (WHR) has been shown to be correlated with visceral fat, making it one of the most commonly used indicators of abdominal obesity. However, little is known about the relationship between WHR and infertility.

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Studies examining preconception eating behaviours with longitudinal dietary patterns from preconception to late pregnancy as well as gestational weight gain (GWG) are limited. We derived dietary pattern trajectories from preconception to late-pregnancy, and related preconception eating behaviours to these trajectories and GWG. Preconception eating behaviours were assessed using the Three-Factor Eating Questionnaire measuring cognitive restraint (CR) - conscious restriction of food intake, emotional eating (EE) - overeating in response to negative emotions, and uncontrolled eating (UE) - overeating with a feeling of lack of control.

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Introduction: Gastric Cancer (GC) refers to a prevalent malignant cancer accompanied by a weak prognosis. The APOBEC3 family genes and lncRNAs are linked with cancer progression. Nevertheless, there is still a scarcity of data concerning the prognostic value of APOBEC3-related lncRNAs in GC.

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Background: The principal barrier to an HIV cure is the presence of the latent viral reservoir (LVR), which has been understudied in African populations. From 2018 to 2019, Uganda instituted a nationwide rollout of ART consisting of Dolutegravir (DTG) with two NRTI, which replaced the previous regimen of one NNRTI and the same two NRTI.

Methods: Changes in the inducible replication-competent LVR (RC-LVR) of ART-suppressed Ugandans with HIV (n = 88) from 2015 to 2020 were examined using the quantitative viral outgrowth assay.

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  • Phenolamides are important plant metabolites that help tomatoes adapt to stress, but their metabolism and regulation are not well understood, particularly in the context of breeding and domestication.
  • The study identified two gene clusters involved in phenolamide metabolism and found that a specific gene (SlMYB13) helps regulate their accumulation, which in turn enhances drought tolerance in tomatoes.
  • Findings indicate that during the domestication process, key genes related to phenolamide production were negatively selected, resulting in reduced phenolamide levels and drought resistance in cultivated tomatoes.
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Article Synopsis
  • * The study introduces two single-chain diabodies (scDbs) that specifically target the HIV-1 envelope protein and enhance the activity of natural killer (NK) cells, which are crucial for fighting infections.
  • * Experiments show that these scDbs can significantly reduce the number of reservoir cells in vitro and in animal models, suggesting they could be promising candidates for future HIV-1 treatments.
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The latent reservoir for HIV-1 in resting CD4+ T cells persists despite antiretroviral therapy as a barrier to cure. The antigen-driven proliferation of infected cells is a major mechanism of reservoir persistence. However, activation through the T cell antigen receptor (TCR) can induce latent proviruses, leading to viral cytopathic effects and immune clearance.

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