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1.
Arch Osteoporos ; 19(1): 24, 2024 Apr 02.
Artículo en Inglés | MEDLINE | ID: mdl-38565791

RESUMEN

A survey of awareness and attitudes to the management of fragility fractures among the membership of the Asia Pacific Orthopaedic Association conducted in 2022 found considerable variation in care across the region. A Call to Action is proposed to improve acute care, rehabilitation and secondary fracture prevention across Asia Pacific. PURPOSE: Fragility fractures impose a substantial burden on older people and their families, healthcare systems and national economies. The current incidence of hip and other fragility fractures across the Asia Pacific region is enormous and set to escalate rapidly in the coming decades. This publication describes findings of a survey of awareness and attitudes to the management of fragility fractures among the membership of the Asia Pacific Orthopaedic Association (APOA) conducted in 2022. METHODS: The survey was developed as a collaboration between the Asia Pacific Osteoporosis and Fragility Fracture Society and the Asia Pacific Fragility Fracture Alliance, and included questions relating to aspects of care upon presentation, during surgery and mobilisation, secondary fracture prevention, and access to specific services. RESULTS: In total, 521 APOA members completed the survey and marked variation in delivery of care was evident. Notable findings included: Fifty-nine percent of respondents indicated that analgesia was routinely initiated in transit (by paramedics) or within 30 minutes of arrival in the Emergency Department. One-quarter of respondents stated that more than 80% of their patients underwent surgery within 48 hours of admission. One-third of respondents considered non-hip, non-vertebral fractures to merit assessment of future fracture risk. One-third of respondents reported the presence of an Orthogeriatric Service in their hospital, and less than a quarter reported the presence of a Fracture Liaison Service. CONCLUSION: A Call to Action for all National Orthopaedic Associations affiliated with APOA is proposed to improve the care of fragility fracture patients across the region.


Asunto(s)
Ortopedia , Fracturas Osteoporóticas , Humanos , Anciano , Fracturas Osteoporóticas/epidemiología , Fracturas Osteoporóticas/prevención & control , Asia/epidemiología , Encuestas y Cuestionarios , Apolipoproteínas A
2.
J Microbiol Immunol Infect ; 56(3): 547-557, 2023 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-36690516

RESUMEN

BACKGROUND: Healthcare-associated COVID-19 infections caused by SARS-CoV-2 have increased morbidity and mortality. Hospitals and skilled nursing facilities (SNFs) have been challenged by infection control and management. METHODS: This case study presents an outbreak investigation in a COVID-19-designated hospital and a hospital-based SNF. Real-time polymerase chain reaction (PCR) and other studies were performed on samples obtained from SNF residents, hospital patients, and healthcare workers (HCWs). The results of the laboratory tests and field epidemiological data were analyzed. Genome sequencing and phylogenetic analysis of SARS-CoV-2 were performed to identify the associations between cases. The tracer gas was released and recorded by a thermal imaging camera to investigate the spatial relations within clusters. RESULTS: During the outbreak, 29 COVID-19 infections in 3 clusters were identified through hospital-wide, risk-guided, and symptom-driven PCR tests. This included 12 HCWs, 5 patients, and 12 SNF residents who had been hospitalized for at least 14 days. Serology tests did not identify any cases among the PCR-negative individuals. The phylogenetic analysis revealed that viral strains from the 3 clusters shared a common mutation of G3994T and were phylogenetically related, which suggested that this outbreak had a common source rather than multiple introductions from the community. Linked cases exhibited vertical spatial distribution, and the sulfur hexafluoride release test confirmed a potential airborne transmission. CONCLUSIONS: This report addressed the advantage of a multi-disciplinary team in outbreak investigation. Identifying an airborne transmission within an outbreak highlighted the importance of regular maintenance of ventilation systems.


Asunto(s)
COVID-19 , Infección Hospitalaria , Humanos , COVID-19/epidemiología , Filogenia , SARS-CoV-2/genética , Aerosoles y Gotitas Respiratorias , Brotes de Enfermedades , Infección Hospitalaria/epidemiología , Hospitales , Reacción en Cadena en Tiempo Real de la Polimerasa
3.
Best Pract Res Clin Rheumatol ; 36(3): 101777, 2022 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-36089481

RESUMEN

The current burden of fragility fractures is enormous, and it is set to increase rapidly in the coming decades as humankind enters a new demographic era. The purpose of this review is to consider, in different settings: • The human and economic toll of fragility fractures. • Risk factors for fragility fractures. • Current acute management of fragility fractures. • Current care gaps in both secondary and primary fracture prevention. A summary of global, regional, and national initiatives to improve the quality of care is provided, in addition to proposals for the research agenda. Systematic approaches to improve the acute care, rehabilitation and prevention of fragility fractures need to be developed and implemented rapidly and at scale in high-, middle- and low-income countries throughout the world. This must be an essential component of our response to the ageing of the global population during the remainder of the current United Nations - World Health Organization "Decade of Healthy Ageing".


Asunto(s)
Osteoporosis , Fracturas Osteoporóticas , Humanos , Fracturas Osteoporóticas/epidemiología , Fracturas Osteoporóticas/prevención & control , Osteoporosis/complicaciones
4.
BMC Geriatr ; 22(1): 604, 2022 07 20.
Artículo en Inglés | MEDLINE | ID: mdl-35858829

RESUMEN

BACKGROUND: Identification of frailty is crucial to guide patient care for the elderly. The Clinical Frailty Scale (CFS) is a reliable, synthesis and clinical judgment-based tool. However, a validated Chinese version of CFS (CFS-C) is lacking. The aim of this study is to describe the translation process of CFS into traditional Chinese and to evaluate its reliability and validity in a geriatric study population in Taiwan. METHODS: This cross-sectional study recruited 221 geriatric outpatients aged 65 years or older at a medical center in Taipei, Taiwan. The Chinese version of CFS was produced following Brislin's translation model. Weighted kappa for agreement and Kendall's tau for correlation were used to assess inter-rater reliability (a subgroup of 52 outpatients) between geriatricians and one research assistant, and validity tests (221 outpatients) by comparing CFS-C with Fried frailty phenotype and Frailty Index based on Comprehensive Geriatric Assessment (FI-CGA). Correlation between CFS-C and other geriatric conditions were also assessed. RESULTS: The inter-rater reliability revealed moderate agreement (weighted kappa = 0.60) and strong correlation (Kendall's tau = 0.67). For criterion validity, CFS-C categorisation showed fair agreement (weighted kappa = 0.37) and significant correlation (Kendall's tau = 0.46) with Fried frailty phenotype, and higher agreement (weighted kappa = 0.51) and correlation (Kendall's tau = 0.63) with FI-CGA categorisation. CFS-C was significantly correlated with various geriatric assessments, including functional disability, physical performance, hand grip, comorbidity, cognition, depression, and nutrition status. No significant correlation was found between CFS-C and appendicular muscle mass. CONCLUSIONS: The CFS-C demonstrated acceptable validity and reliability in Chinese older adults in Taiwan. Development of CFS-C enhanced consistency and accuracy of frailty assessment, both in research and clinical practice.


Asunto(s)
Fragilidad , Anciano , China , Estudios Transversales , Anciano Frágil , Fragilidad/diagnóstico , Fragilidad/epidemiología , Evaluación Geriátrica , Fuerza de la Mano , Humanos , Reproducibilidad de los Resultados
5.
Comput Struct Biotechnol J ; 20: 1277-1285, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35356547

RESUMEN

With advances in NGS technologies, transcriptional profiling of human tissue across many diseases is becoming more routine, leading to the generation of petabytes of data deposited in public repositories. There is a need for bench scientists with little computational expertise to be able to access and mine this data to understand disease pathology, identify robust biomarkers of disease and the effect of interventions (in vivo or in vitro). To this end we release an open source analytics and visualization platform for expression data called OmicsView, http://omicsview.org. This platform comes preloaded with 1000 s of samples across many disease areas and normal tissue, including the GTEx database, all processed with a harmonized pipeline. We demonstrate the power and ease-of-use of the platform by means of a Crohn's disease data mining exercise where we can quickly uncover disease pathology and identify strong biomarkers of disease and response to treatment.

6.
J Mol Biol ; 434(11): 167425, 2022 06 15.
Artículo en Inglés | MEDLINE | ID: mdl-34971674

RESUMEN

CellDepot containing over 270 datasets from 8 species and many tissues serves as an integrated web application to empower scientists in exploring single-cell RNA-seq (scRNA-seq) datasets and comparing the datasets among various studies through a user-friendly interface with advanced visualization and analytical capabilities. To begin with, it provides an efficient data management system that users can upload single cell datasets and query the database by multiple attributes such as species and cell types. In addition, the graphical multi-logic, multi-condition query builder and convenient filtering tool backed by MySQL database system, allows users to quickly find the datasets of interest and compare the expression of gene(s) across these. Moreover, by embedding the cellxgene VIP tool, CellDepot enables fast exploration of individual dataset in the manner of interactivity and scalability to gain more refined insights such as cell composition, gene expression profiles, and differentially expressed genes among cell types by leveraging more than 20 frequently applied plotting functions and high-level analysis methods in single cell research. In summary, the web portal available at http://celldepot.bxgenomics.com, prompts large scale single cell data sharing, facilitates meta-analysis and visualization, and encourages scientists to contribute to the single-cell community in a tractable and collaborative way. Finally, CellDepot is released as open-source software under MIT license to motivate crowd contribution, broad adoption, and local deployment for private datasets.


Asunto(s)
Conjuntos de Datos como Asunto , Uso de Internet , RNA-Seq , Análisis de la Célula Individual , Programas Informáticos , Transcriptoma , Perfilación de la Expresión Génica , Secuenciación del Exoma
7.
Can Med Educ J ; 11(1): e81-e96, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32215146

RESUMEN

INTRODUCTION: The field of augmented reality (AR) is rapidly growing with many new potential applications in medical education. This systematic review investigated the current state of augmented reality applications (ARAs) and developed an analytical model to guide future research in assessing ARAs as teaching tools in medical education. METHODS: A literature search was conducted using PubMed, Embase, Web of Science, Cochrane Library, and Google Scholar. This review followed PRISMA guidelines and included publications from January 1, 2000 to June 18, 2018. Inclusion criteria were experimental studies evaluating ARAs implemented in healthcare education published in English. Our review evaluated study quality and determined whether studies assessed ARA validity using criteria established by the GRADE Working Group and Gallagher et al., respectively. These findings were used to formulate an analytical model to assess the readiness of ARAs for implementation in medical education. RESULTS: We identified 100,807 articles in the initial literature search; 36 met inclusion criteria for final review and were categorized into three categories: Surgery (23), Anatomy (9), and Other (4). The overall quality of the studies was poor and no ARA was tested for all five stages of validity. Our analytical model evaluates the importance of research quality, application content, outcomes, and feasibility of an ARA to gauge its readiness for implementation. CONCLUSION: While AR technology is growing at a rapid rate, the current quality and breadth of AR research in medical training is insufficient to recommend the adoption into educational curricula. We hope our analytical model will help standardize AR assessment methods and define the role of AR technology in medical education.


CONTEXTE: Le domaine de la réalité augmentée (RA) est en pleine émergence et dispose de plusieurs nouvelles applications potentielles en éducation médicale. Cette revue systématique a évalué l'état actuel des applications de réalité augmentée (ARA) afin d'et élaboré un modèle analytique pour orienter les futures recherches sur l'évaluation des ARA comme outils pédagogiques en éducationmédicale. MÉTHODES: Une recherche documentaire a été menée à l'aide de PubMed, Web of Science, Cochrane Library et Google Scholar. Cette revue a suivi les directives de la méthode PRISMA et contenait les publications du 1er janvier 2000 au 18 juin 2018. Les études étaient retenues si elles avaient un devis expérimental et qu'elles avaient été publiées en anglais et qu'elles évaluaient des ARA mises en place dans l'enseignement des soins de santé. Notre revuea évalué la qualité des études et déterminé si les études ont pu évaluer la validité des ARA en utilisant les critères établis par le GRADE Working Group et Gallagher et coll., respectivement. À partir de ces conclusions, nous avons formulé un modèle analytique afin d'évaluer si les ARA peuvent être mises en place dans la formation médicale. RÉSULTATS: Nous avons trouvé 100 807 articles lors de la recherche documentaire initiale; 36 ont satisfait aux critères d'inclusion pour l'examen final et ont été classés dans trois catégories : chirurgie (23), anatomie (9) et autre (4). La qualité globaledes études était de mauvaise et aucune ARA n'a été testée pour toutes les cinq étapes de validité. Notre modèle analytique évalue l'importance de la qualité des recherches, du contenu des applications, des résultats, et de la faisabilité d'une ARA pour déterminer si elle est prête à être mise en place. CONCLUSION: Bien que la technologie de la RA progresse rapidement, la qualité et l'étendue actuelles de la recherche sur la RA en éducationmédicale sont insuffisantes pour recommander son adoption dans le cursus de formation. Nous espérons que notre modèle analytique aidera à uniformiserles méthodes d'évaluations de la RA et à déterminer le rôle de la technologie liée à la RA en éducation médicale.

8.
Alzheimers Dement ; 16(1): 229-243, 2020 01.
Artículo en Inglés | MEDLINE | ID: mdl-31914225

RESUMEN

The last decade has seen a substantial increase in research focused on the identification, development, and validation of diagnostic and prognostic retinal biomarkers for Alzheimer's disease (AD). Sensitive retinal biomarkers may be advantageous because they are cost and time efficient, non-invasive, and present a minimal degree of patient risk and a high degree of accessibility. Much of the work in this area thus far has focused on distinguishing between symptomatic AD and/or mild cognitive impairment (MCI) and cognitively normal older adults. Minimal work has been done on the detection of preclinical AD, the earliest stage of AD pathogenesis characterized by the accumulation of cerebral amyloid absent clinical symptoms of MCI or dementia. The following review examines retinal structural changes, proteinopathies, and vascular alterations that have been proposed as potential AD biomarkers, with a focus on studies examining the earliest stages of disease pathogenesis. In addition, we present recommendations for future research to move beyond the discovery phase and toward validation of AD risk biomarkers that could potentially be used as a first step in a multistep screening process for AD risk detection.


Asunto(s)
Enfermedad de Alzheimer/diagnóstico por imagen , Biomarcadores/análisis , Disfunción Cognitiva/diagnóstico por imagen , Conocimientos, Actitudes y Práctica en Salud , Tamizaje Masivo , Síntomas Prodrómicos , Enfermedad de Alzheimer/patología , Amiloide , Humanos , Tomografía de Coherencia Óptica
9.
Med Sci Educ ; 30(3): 1263-1266, 2020 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-34457789

RESUMEN

Publishing medical research is an increasingly competitive process for junior researchers. One critical step is revising a manuscript with editorial team feedback. This article's purpose is to utilize a novel example-based learning approach to provide trainees and junior faculty with ten steps on how to successfully navigate the manuscript peer-review process. To this end, each step in the proposed guide is correlated with the authors' most recent publication experience, with key manuscript and editor response letter versions made available through an open-access digital repository.

10.
Radiol Artif Intell ; 2(2): e190026, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-33937816

RESUMEN

PURPOSE: To systematically review and synthesize the current literature and to develop a compendium of technical characteristics of existing deep learning applications in neuroradiology. MATERIALS AND METHODS: A Preferred Reporting Items for Systematic Reviews and Meta-Analyses systematic review was conducted through September 1, 2019, using PubMed, Cochrane, and Web of Science databases. A total of 155 articles discussing deep learning applications in neuroimaging were identified, divided by imaging modality, and characterized by imaging task, data source, algorithm type, and outcome metrics. RESULTS: A total of 155 studies were identified and divided into: MRI (n = 115), functional MRI (n = 19), CT (n = 9), PET (n = 18), and US (n = 1). Seven were multimodal. MRI applications were described in 74%, and 76 (49%) were tasked with image segmentation. Of the 155 articles identified in this study, 65 (42%) were tested on institutional data; only 16 were validated against publicly available data. In addition, 53 studies (34%) used a combined dataset of less than 100, and 124 (80%) used a combined dataset of less than 1000. CONCLUSION: Although deep learning has demonstrated potential for each of these modalities, this review highlights several needs in the field of deep learning research including use of internal datasets without external validation, unavailability of implementation methods, inconsistent assessment metrics, and lack of clinical validation. However, the rapid growth of deep learning in neuroradiology holds promise and, as strides are made to improve standardization, generalizability, and reproducibility, it may soon play a role in clinical diagnosis and treatment of neurologic disorders.Supplemental material is available for this article.© RSNA, 2020.

11.
J Formos Med Assoc ; 119(8): 1274-1282, 2020 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-31787488

RESUMEN

BACKGROUND/PURPOSE: We examined the prevalence of probable common mental disorders (CMDs) in commercial low-dose computed tomography (LDCT) lung cancer screening consumers relative to the general population and to determine the correlates of probable CMDs among screening participants. METHODS: Commercial LDCT lung cancer screening consumers (N = 1323) were compared with a nationally representative sample from the Taiwan Social Change Survey (TSCS) (N = 2034). Respondents scoring ≥3 on the Chinese Health Questionnaire were classified as having a probable CMD. Logistic regression was used to investigate differences between the two groups and correlates of probable CMDs among LDCT lung cancer screening participants. RESULTS: The prevalence of probable CMDs was higher among LDCT lung cancer screening participants (25.47%) than among TSCS adults (21.56%). Compared with the TSCS sample, the screening participants had a higher probability of CMDs (OR = 1.40, 95% CI = 1.13-1.73), higher education levels (OR = 7.95, 95% CI = 6.00-10.53), and a history of drinking (OR = 11.85, 95% CI = 9.45-14.85) or betel-quid use (OR = 5.43, 95% CI = 3.98-7.42) but were less likely to smoke (OR = 0.52, 95% CI = 0.40-0.68). Among the screening participants, being female (OR = 1.37, 95% CI = 1.02-1.84) and a current smoker (OR = 1.74, 1.19-2.54) and living near ≥2 smoking family members (OR = 2.30, 95% CI 1.57-3.38) were associated with an increased likelihood of having CMDs. CONCLUSION: Commercial LDCT lung cancer screening users may have a positive association with probable CMDs compared to the general population. Screening programs should consider including criteria and providing psychoeducation to improve the physical and mental outcomes of participants. CLINICAL TRIAL REGISTRATION: Purely observational studies (those in which the assignment of the medical intervention is not at the discretion of the investigator) do not require registration.


Asunto(s)
Neoplasias Pulmonares , Trastornos Mentales , Adulto , Detección Precoz del Cáncer , Femenino , Humanos , Neoplasias Pulmonares/diagnóstico por imagen , Neoplasias Pulmonares/epidemiología , Trastornos Mentales/epidemiología , Factores de Riesgo , Taiwán/epidemiología
12.
Curr Osteoporos Rep ; 17(6): 510-520, 2019 12.
Artículo en Inglés | MEDLINE | ID: mdl-31734907

RESUMEN

PURPOSE OF REVIEW: This review sought to describe quality improvement initiatives in fragility fracture care and prevention. RECENT FINDINGS: A major care gap persists throughout the world in the secondary prevention of fragility fractures. Systematic reviews have confirmed that the Fracture Liaison Service (FLS) model of care is associated with significant improvements in rates of bone mineral density testing, initiation of osteoporosis treatment and adherence with treatment for individuals who sustain fragility fractures. Further, these improvements in the processes of care resulted in significant reductions in refracture risk and lower post-fracture mortality. The primary challenge facing health systems now is to ensure that best practice is delivered effectively in the local healthcare setting. Publication of clinical standards for FLS at the organisational and patient level in combination with the establishment of national registries has provided a mechanism for FLS to benchmark and improve their performance. Major efforts are ongoing at the global, regional and national level to improve the acute care, rehabilitation and secondary prevention for individuals who sustain fragility fractures. Active participation in these initiatives has the potential to eliminate current care gaps in the coming decade.


Asunto(s)
Conservadores de la Densidad Ósea/uso terapéutico , Osteoporosis/diagnóstico , Osteoporosis/tratamiento farmacológico , Fracturas Osteoporóticas/terapia , Mejoramiento de la Calidad , Derivación y Consulta , Manejo de la Enfermedad , Humanos , Fracturas Osteoporóticas/prevención & control , Guías de Práctica Clínica como Asunto , Prevención Secundaria
13.
Front Aging Neurosci ; 11: 288, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31736739

RESUMEN

INTRODUCTION: The utility of subjective memory impairment (SMI) as a risk marker for preclinical Alzheimer's disease (AD) remains unclear; however, recent studies have identified a correlation between retinal biomarkers and onset of preclinical disease. This study examines the relationship between retinal biomarkers that have been associated with cerebral amyloid, an early hallmark of AD, and SMI scores in patients at risk for developing AD. METHODS: Forty-nine cognitively normal subjects were followed over 27 months and evaluated using a combination of neuropsychological, psychological, and retinal imaging instruments. Subjective memory testing was conducted using the memory assessment clinic questionnaire (MACQ) and Depression, Anxiety, and Stress Scales (DASS). Multivariate linear analysis was conducted using STATA software. RESULTS: Positive correlations were found between retinal nerve fiber layer (RNFL) volume and scores obtained from the MAC-Q at 27 months (MAC-Q_27), the DASS questionnaire for anxiety at 27 months (DASS-A_27), and the change in DASS-A over 27 months (dDASSA). There was also a significant positive correlation between these variables and the change in RNFL thickness over 27 months (dRNFL). MACQ_27, DASSA_27, and dDASS-A accounted for 35.7% of RFNL variance at 27 months and 21.5% of dRFNL variance. DISCUSSION: These findings suggest that worse subjective memory complaints and anxiety scores may be associated with one of the most commonly used structural anatomical retinal markers of early disease burden in AD. If so, these results lend support to SMI as a valid risk marker for later cognitive decline.

14.
BMC Geriatr ; 19(1): 285, 2019 10 24.
Artículo en Inglés | MEDLINE | ID: mdl-31651249

RESUMEN

BACKGROUND: Unplanned readmission is an important healthcare quality issue. We studied the effect of a comprehensive geriatric screen (CGS) in the early admission course followed by a comprehensive geriatric assessment on readmission rates in elderly patients. METHODS: This quasi-experimental study with a historical comparison group was conducted in the geriatric ward of a referral centre in northern Taiwan. Older adults (aged > = 65 y/o) admitted from June 2013 to December 2013 were recruited for the geriatric screen group (N = 377). Patients admitted to the same ward from July 2011 to June 2012 were selected for the historical group (N = 380). The CGS was administered within the first 48 h after admission and was followed by a comprehensive geriatric assessment (CGA). Confounding risk factors included age, gender, Charlson comorbidity index, Barthel index score and medical utilization (length of stay and number of admissions), which were controlled using logistic regression models. We also developed a scoring system to identify the group that would potentially benefit the most from the early CGS. RESULTS: The 30-day readmission rate was significantly lower in the early CGS group than in the historical comparison group (11.4% vs 16.9%, p = 0.03). After adjusting for confounding variables, the hazard ratio of the early CGS group was 0.64 (95% CI 0.43-0.95). After scoring the potential benefit to the patients in the early CGS group, the log rank test showed a significant difference (p = 0.001 in the high-potential group and p = 0.98 in the low-potential group). CONCLUSION: An early CGS followed by a CGA may significantly reduce the 30-day readmission rate of elderly patients.


Asunto(s)
Evaluación Geriátrica/métodos , Servicios de Salud para Ancianos/tendencias , Readmisión del Paciente/tendencias , Anciano , Anciano de 80 o más Años , Diagnóstico Precoz , Femenino , Hospitalización/tendencias , Humanos , Masculino , Estudios Prospectivos , Derivación y Consulta/tendencias , Factores de Riesgo , Taiwán/epidemiología
15.
R I Med J (2013) ; 102(2): 39-40, 2019 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-30823700
16.
J Cell Biol ; 218(3): 798-807, 2019 03 04.
Artículo en Inglés | MEDLINE | ID: mdl-30700497

RESUMEN

The regulation of organelle abundance is critical for cell function and survival; however, the mechanisms responsible are not fully understood. In this study, we characterize a role of the deubiquitinating enzyme USP30 in peroxisome maintenance. Peroxisomes are highly dynamic, changing in abundance in response to metabolic stress. In our recent study identifying the role of USP30 in mitophagy, we observed USP30 to be localized to punctate structures resembling peroxisomes. We report here that USP30, best known as a mitophagy regulator, is also necessary for regulating pexophagy, the selective autophagic degradation of peroxisomes. We find that overexpressing USP30 prevents pexophagy during amino acid starvation, and its depletion results in pexophagy induction under basal conditions. We demonstrate that USP30 prevents pexophagy by counteracting the action of the peroxisomal E3 ubiquitin ligase PEX2. Finally, we show that USP30 can rescue the peroxisome loss observed in some disease-causing peroxisome mutations, pointing to a potential therapeutic target.


Asunto(s)
Proteínas Mitocondriales/metabolismo , Mitofagia , Peroxisomas/metabolismo , Estrés Fisiológico , Tioléster Hidrolasas/metabolismo , Animales , Células COS , Chlorocebus aethiops , Células HeLa , Humanos , Ratones , Proteínas Mitocondriales/genética , Mutación , Factor 2 de la Biogénesis del Peroxisoma/genética , Factor 2 de la Biogénesis del Peroxisoma/metabolismo , Peroxisomas/genética , Tioléster Hidrolasas/genética
17.
J Am Med Dir Assoc ; 20(9): 1129-1136.e1, 2019 09.
Artículo en Inglés | MEDLINE | ID: mdl-30723057

RESUMEN

OBJECTIVE: A fracture liaison service (FLS) for patients with fractures is a promising approach for improving outcomes, but barriers to the successful implementation of an FLS remain. The factors influencing the outcomes of patients already receiving FLS care are unclear. DESIGN: A prospective multicenter cohort study. SETTINGS AND PARTICIPANTS: Patients with incident hip and clinical vertebral fractures treated at 2 institutions between January 2014 and June 2016 were prospectively enrolled. Demographic profiles, comorbidities, prior fracture experiences, T scores, Fracture Risk Assessment Tool (FRAX) scores, and serum markers were examined. MEASURES: Self-reported functional status (at the 4th month), mortality, recurrent fractures, and falls (at the 2-year follow-up). RESULTS: Of 712 patients screened for eligibility, 600 (84%) participants (age 78 ± 10 years) were enrolled in the FLS program. At 4 months, 58%, 53%, and 60% of the participants reported improved mobility, self-care, and daily activities after FLS care, respectively. After 2 years, 85 (14%) died, 36 (6%) developed recurrent fractures, and 199 (33%) had 1 or more fall episodes. Multivariate logistic regression showed that neurologic disorders, heart disease, and diabetes were associated with a decreased probability of functional recovery. Cox regression showed that older age and chronic kidney disease (CKD) were predictive of increased mortality, whereas heart disease was correlated with an increased refracture risk. Older age and cancer or osteoarthritis were associated with a higher risk of falls. Importantly, a higher body mass index predicted a lower risk of mortality and a higher probability of improved self-care but a higher risk of fall at follow-up. CONCLUSIONS/IMPLICATIONS: We discovered that comorbidities including CKD, heart disease, cancer, and osteoarthritis could influence short-term functional changes, survival, and the risk of refractures or falls among patients participating in FLSs. These factors are expected to aid in prognosis estimation and management planning for those with fractures.


Asunto(s)
Accidentes por Caídas/mortalidad , Fracturas Osteoporóticas/mortalidad , Fracturas Osteoporóticas/rehabilitación , Recuperación de la Función/fisiología , Recurrencia , Anciano , Anciano de 80 o más Años , Índice de Masa Corporal , Femenino , Humanos , Masculino , Fracturas Osteoporóticas/epidemiología , Evaluación de Resultado en la Atención de Salud , Estudios Prospectivos , Insuficiencia Renal Crónica , Factores de Riesgo , Autoinforme
19.
Med Teach ; 41(4): 471-475, 2019 04.
Artículo en Inglés | MEDLINE | ID: mdl-29361869

RESUMEN

Background: Medical students engaged in research develop general skills that are instrumental to clinical practice. The systematic review, a cornerstone of evidence-based medicine, represents an ideal starting point for student researchers. Aim and methods: To outline twelve tips on conducting a systematic review for medical students with limited research experience. Results: The tips in this article are practical, comprehensive, and informed by the authors experience as medical students. Conclusion: The twelve tips can help medical students contribute to the literature and build a valuable skillset for future research and clinical practice.


Asunto(s)
Proyectos de Investigación , Estudiantes de Medicina , Comunicación , Humanos , Gestión de la Información/organización & administración , Bibliotecólogos , Mentores , Factores de Tiempo
20.
Mol Cell Proteomics ; 17(11): 2242-2255, 2018 11.
Artículo en Inglés | MEDLINE | ID: mdl-30037810

RESUMEN

Zika virus (ZIKV) is a membrane enveloped Flavivirus with a positive strand RNA genome, transmitted by Aedes mosquitoes. The geographical range of ZIKV has dramatically expanded in recent decades resulting in increasing numbers of infected individuals, and the spike in ZIKV infections has been linked to significant increases in both Guillain-Barré syndrome and microcephaly. Although a large number of host proteins have been physically and/or functionally linked to other Flaviviruses, very little is known about the virus-host protein interactions established by ZIKV. Here we map host cell protein interaction profiles for each of the ten polypeptides encoded in the ZIKV genome, generating a protein topology network comprising 3033 interactions among 1224 unique human polypeptides. The interactome is enriched in proteins with roles in polypeptide processing and quality control, vesicle trafficking, RNA processing and lipid metabolism. >60% of the network components have been previously implicated in other types of viral infections; the remaining interactors comprise hundreds of new putative ZIKV functional partners. Mining this rich data set, we highlight several examples of how ZIKV may usurp or disrupt the function of host cell organelles, and uncover an important role for peroxisomes in ZIKV infection.


Asunto(s)
Orgánulos/virología , Mapas de Interacción de Proteínas , Virus Zika/fisiología , Células HEK293 , Células HeLa , Interacciones Huésped-Patógeno , Humanos , Modelos Biológicos , Peroxisomas/metabolismo , Proteínas Virales/metabolismo , Infección por el Virus Zika/metabolismo , Infección por el Virus Zika/virología
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