Publications by authors named "Chia R"

Microplastics (MPs), degraded from plastic wastes, have drawn significant attention worldwide due to its prevalence and rapid transition. Contamination of freshwater with MPs has become an emerging global issue. Heavy metals (HMs), a prominent global pollutant, also garnered much attention due to their potential interaction with MPs, presenting a multifaceted environmental threat.

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This clinical case series reviews the diagnosis and management of aorto-right ventricular fistulas post-transcatheter aortic valve replacement, highlighting 3 cases. We emphasize early detection, individualized treatment strategies, and the role of multidisciplinary heart teams in achieving favorable outcomes. Comprehensive imaging and procedural planning are crucial for successful intervention and management of this rare complication.

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Background And Aims: Vitamin B12 deficiency has been associated with neuropsychiatric symptoms (NPS), but the relationship between vitamin B12 and NPS remains unclear prior to the onset of dementia. The study aims to examine the association between vitamin B12 and NPS in dementia-free Asian older adults.

Methods: This is a cross-sectional population-based study where multi-ethnic community-dwelling Asian participants (i.

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Although humans are highly dependent on plastics from infancy to adolescence, these materials can degrade into ubiquitous microplastics (MPs) that affect individuals at every stage of life. However, information on the sources, mechanisms, detection techniques, and detrimental effects of MPs on children's health from infancy to adolescence is limited. Hence, here we identified and reviewed original research papers published in 2017-2023 across 11 database categories in PubMed, Google Scholar, Scopus, and Web of Science to improve our understanding of MPs with a focus on pediatric well-being.

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  • Repeat expansions in the C9orf72 gene are a leading genetic cause of ALS and frontotemporal dementia, but understanding how this mutation causes neuron death is still unclear, complicating the search for effective therapies.
  • Researchers analyzed data from over 41,000 ALS and healthy samples to identify potential treatments, discovering that acamprosate, a drug used for other conditions, might be repurposed for C9orf72-related diseases.
  • Their findings demonstrated that acamprosate has neuroprotective properties in cell models and works similarly well as the current treatment, riluzole, showing the potential of using genomic data to find new drug applications.
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  • ALS is a severe neurodegenerative disease that leads to paralysis and death, with its genetic causes not fully understood.
  • Researchers conducted a study involving 435 ALS patients and 279 controls to identify genetic risk factors, using methods like GWAS and TWAS to analyze gene variants and their effects.
  • The study found a significant variant linked to increased ALS risk and indicated that certain genetic factors might reduce the risk, highlighting the need for further research into these genetic and environmental interactions.
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  • Restless legs syndrome (RLS) is a neurological disorder characterized by uncomfortable leg sensations and an urge to move, especially during rest, but its genetic causes are not fully known.
  • Researchers conducted a large-scale study analyzing the genomes of nearly 10,000 RLS cases and over 38,000 controls, discovering 9 genetic risk loci, including one novel locus (LMX1B).
  • The findings suggest significant genetic overlaps between RLS and other conditions like neuroticism, depression, and even intelligence, advancing the understanding of RLS's genetic determinants.
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  • - Up to 80% of patients with Parkinson's disease experience dementia, but the timing varies widely, and the relationship between Parkinson's disease dementia and dementia with Lewy bodies is still debated.
  • - A study analyzed genetic data from 7804 patients to investigate how genetic factors influence the development of dementia in Lewy body diseases, revealing certain risk and protective alleles.
  • - Key findings include the identification of the risk allele rs429358, which increases the odds of developing dementia, and protective alleles near specific genes that may help prevent it, highlighting the need for further research with confirmed cases.
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Microplastic (MP) pollution in urban environments is a pervasive and complex problem with significant environmental and human health implications. Although studies have been conducted on MP pollution in urban environments, there are still research gaps in understanding the exact sources, regulation, and impact of urban MP on the environment and public health. Therefore, the goal of this study is to provide a comprehensive overview of the complex pathways, harmful effects, and regulatory efforts of urban MP pollution.

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Background: Previous studies have linked cardiovascular risk factors during midlife to cognitive function in later life. However, few studies have looked at the association between cardiac function, brain structure, and cognitive function and even less have included diverse middle-aged populations.

Objectives: The objective of this study was to determine associations between cardiac and brain structure and function in a multiethnic cohort of middle-aged adults.

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Background: Emerging diagnostic modalities suggest that miRNA profiles within extracellular vesicles (EVs) isolated from peripheral blood specimens may provide a non-invasive diagnostic alternative for dementia and neurodegenerative disorders. Given that EVs confer a protective environment against miRNA enzymatic degradation, the miRNAs enriched in the EV fraction of blood samples could serve as more stable and clinically relevant biomarkers compared to those obtained from serum.

Objective: To compare miRNAs isolated from EVs versus serum in blood taken from Alzheimer's disease (AD) dementia patients and control cohorts.

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  • Multiple system atrophy (MSA) is a neurodegenerative disease that leads to symptoms like parkinsonism and ataxia, but its genetic causes are not well understood and treatment options are limited to supportive care.
  • A comprehensive study involving the whole genome sequencing of nearly 900 MSA patients and over 7,000 controls discovered four key genetic risk factors associated with the disease.
  • The research identified potential susceptibility genes and provided insights into how genetic variations influence gene expression in brain cells, offering a valuable resource for further studies on similar diseases.
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Electrogenic biofilms in bioelectrochemical systems (BES) are critical in wastewater treatment. Industrial effluents often contain cobalt (Co); however, its impact on biofilms is unknown. This study investigated how increasing Co concentrations (0-30 mg/L) affect BES biofilm community dynamics, extracellular polymeric substances, microbial metabolism, electron transfer gene expression, and electrochemical performance.

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Age-associated cerebral small vessel disease (CSVD) represents a clinically heterogenous condition, arising from diverse microvascular mechanisms. These lead to chronic cerebrovascular dysfunction and carry a substantial risk of subsequent stroke and vascular cognitive impairment in aging populations. Owing to advances in neuroimaging, in vivo visualization of cerebral vasculature abnormities and detection of CSVD, including lacunes, microinfarcts, microbleeds and white matter lesions, is now possible, but remains a resource-, skills- and time-intensive approach.

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Purpose: This study aims to evaluate the perioperative outcomes of aortic valve replacement (AVR) via right anterior minithoracotomy (RAT) during the learning curve.

Methods: It was a retrospective, observational, cohort study of patients who underwent RAT AVR from June 2015 to April 2022. Primary outcomes measured were 30-day morbidity and mortality.

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  • - The study explores how sex affects Lewy body dementia (LBD) and addresses the lack of attention to sex-specific risk factors in previous research, particularly focusing on the X chromosome.
  • - Researchers conducted an analysis involving 2,591 LBD patients and 4,391 controls, identifying a key genetic risk factor (MAP3K15) associated with increased LBD risk in females.
  • - Additionally, they found evidence of a higher prevalence of certain genetic mutations (missense mutations in TEX13A) in female LBD cases, suggesting genetic factors may influence the disease differently based on sex.
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Introduction: To prevent progression of early-stage diabetic retinopathy, we need functional tests that can distinguish multiple levels of neural damage before classical vasculopathy. To that end, we compared multifocal pupillographic objective perimetry (mfPOP), and two types of subjective automated perimetry (SAP), in persons with type 2 diabetes (PwT2D) with either no retinopathy (noDR) or mild to-moderate non-proliferative retinopathy (mmDR).

Methods: Both eyes were assessed by two mfPOP test methods that present stimuli within either the central ±15° (OFA15) or ±30° (OFA30), each producing per-region sensitivities and response delays.

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In the brain, the extracellular matrix (ECM) composition shapes the neuronal microenvironment and can undergo substantial changes with cerebral pathology. Brevican is integral to the formation of the ECM's neuroprotective perineuronal nets (PNNs). Decreased brevican levels were reported in vascular dementia (VaD) but not in Alzheimer's disease (AD).

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Dementia with Lewy bodies (DLB) is a common form of dementia in the elderly population. We performed genome-wide DNA methylation mapping of cerebellar tissue from pathologically confirmed DLB cases and controls to study the epigenetic profile of this understudied disease. After quality control filtering, 728,197 CpG-sites in 278 cases and 172 controls were available for the analysis.

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  • Restless legs syndrome (RLS) is a neurological condition characterized by uncomfortable leg sensations and an urge to move, especially during rest; the causes are not fully understood.
  • A study involving genome sequencing of nearly 10,000 RLS cases and almost 39,000 controls identified nine genetic risk loci, including one new locus, which contributes to understanding the genetics behind RLS.
  • The research also found correlations between RLS and other conditions like neuroticism, depression, and intelligence, suggesting that common genetic variants play a significant role in this widespread disorder.
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Lewy body dementia is the second most common neurodegenerative dementia after Alzheimer's disease. Disease-modifying therapies for this disabling neuropsychiatric condition are critically needed. To identify drugs associated with the risk of developing Lewy body dementia, we performed a population-based case-control study of 148 170 US Medicare participants diagnosed with Lewy body dementia between 1 January 2008 and 31 December 2014 and of 1 253 043 frequency-matched controls.

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Purpose: The value of proximal bone analysis for surgical clearance of infection remains debated. Real-world practice traditionally utilized proximal bone microbiology rather than histopathology to diagnose residual diabetes-related osteomyelitis of the foot (DFO) post-amputation. We assessed the concordance between proximal bone microbiology and histopathology in determining residual infection and their predictability for revision operation in DFO and diabetes-related foot infection (DFI).

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  • * Research indicates that genetic factors play a role in disease heterogeneity, with specific alleles linked to an increased risk or protection against developing dementia in Lewy body diseases.
  • * A study involving 7,804 patients identified certain genetic variants that increase the likelihood of dementia, suggesting further investigation is needed, especially in autopsy-confirmed cases for validation.
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Purpose: Rehabilitation professionals prescribe patients with suitable powered mobility aids (PMAs) based on patient characteristics, e.g., age and mobility.

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