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1.
Hum Genet ; 2024 Apr 20.
Artículo en Inglés | MEDLINE | ID: mdl-38642129

RESUMEN

Copper is a vital micronutrient involved in many biological processes and is an essential component of tumour cell growth and migration. Copper influences tumour growth through a process called cuproplasia, defined as abnormal copper-dependent cell-growth and proliferation. Copper-chelation therapy targeting this process has demonstrated efficacy in several clinical trials against cancer. While the molecular pathways associated with cuproplasia are partially known, genetic heterogeneity across different cancer types has limited the understanding of how cuproplasia impacts patient survival. Utilising RNA-sequencing data from The Cancer Genome Atlas (TCGA) and the Genotype-Tissue Expression (GTEx) datasets, we generated gene regulatory networks to identify the critical cuproplasia-related genes across 23 different cancer types. From this, we identified a novel 8-gene cuproplasia-related gene signature associated with pan-cancer survival, and a 6-gene prognostic risk score model in low grade glioma. These findings highlight the use of gene regulatory networks to identify cuproplasia-related gene signatures that could be used to generate risk score models. This can potentially identify patients who could benefit from copper-chelation therapy and identifies novel targeted therapeutic strategies.

2.
Health Expect ; 27(3): e14081, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38845155

RESUMEN

BACKGROUND: Patient and public involvement and engagement (PPIE) have long been considered important to good research practice. There is growing, yet diverse, evidence in support of PPIE with children and young people (CYP). We must now understand the various approaches to involvement of CYP in research. AIMS: This rapid umbrella review aimed to provide an overview of when, how and to what extent CYP are involved in the conduct of health research, as well as the reported benefits, challenges, and facilitators of involvement. METHODS: We searched OVID Medline, Embase and PubMed. Published reviews were included if they reported meaningful involvement of CYP in the conduct of health research. Extracted data were synthesised using thematic analysis. RESULTS: The 26 reviews included were predominately systematic and scoping reviews, published within the last decade, and originating from North America and the United Kingdom. CYPs were involved in all stages of research across the literature, most commonly during research design and data collection, and rarely during research funding or data sharing and access. Researchers mostly engaged CYP using focus groups, interviews, advisory panels, questionnaires, and to a lesser extent arts-based approaches such as photovoice and drawing. Visual and active creative methods were more commonly used with children ≤12 years. The evidence showed a shared understanding of the benefits, challenges, and facilitators for involvement of CYP, such as time and resource commitment and building partnership. CONCLUSION: Overall, the review identified consistency in the range of methods and approaches used, and stages of research with which CYP are commonly involved. There is a need for more consistent reporting of PPIE in the literature, both in terminology and detail used. Furthermore, the impact of approaches to CYP involvement on research and community outcomes must be better evaluated. PATIENT/PUBLIC CONTRIBUTION: This review forms part of broader research initiatives being led by the authors. Together, these projects aim to support embedding of child voices in research practice and to explore the desirability and suitability of Young Persons Advisory Groups within birth cohort studies. The findings from this review, alongside public and stakeholder consultation, will inform development of resources such as practice recommendations to guide future involvement of CYP in health research undertaken at the author's respective institutions.


Asunto(s)
Participación del Paciente , Humanos , Niño , Adolescente , Proyectos de Investigación , Investigación sobre Servicios de Salud , Participación de la Comunidad
3.
Clin Gerontol ; : 1-18, 2024 Apr 15.
Artículo en Inglés | MEDLINE | ID: mdl-38622883

RESUMEN

OBJECTIVES: This scoping review maps the literature on psychosocial distress and coping among nursing assistants (CNAs) in long-term care facilities (LTC) during the COVID-19 pandemic onto the Social Ecological Model (SEM) of Occupational Stress. METHODS: Searches yielded 862 unique studies. Inclusion criteria were sample CNAs or equivalent in LTC; includes psychosocial variable; and collect data from February 2020-. A multi-phasic, meta-synthesis was used to synthesize qualitative data. RESULTS: We identified 20 studies (13 quantitative, 7 qualitative) conducted between March 2020 and December 2021 from 14 countries. Prevalence rates were reported for perceived stress (31-33%; n = 1 study), post-traumatic stress (42%; n = 1), anxiety (53%; n = 1), depression (15-59%; n = 2), suicidal thoughts (11-15%; n = 1), and everyday emotional burnout (28%; n = 1). Qualitative studies identified factors contributing to psychosocial distress and coping at each SEM level (i.e. individual, microsystem, organization, and peri-/extra-organizational). Quantitative studies primarily measured factors relating to psychosocial distress and coping at the individual and organizational levels. CONCLUSIONS & CLINICAL IMPLICATIONS: This review identifies specific targets for intervention for psychosocial distress among CNAs in LTC at multiple levels, including job clarity; workload; facility culture; community relations; and policy. These intervention targets remain relevant to the LTC industry beyond the context of the COVID-19 pandemic.

4.
Dev Biol ; 490: 126-133, 2022 10.
Artículo en Inglés | MEDLINE | ID: mdl-35944701

RESUMEN

Heterozygous loss of function mutations in TWIST1 cause Saethre-Chotzen syndrome, which is characterized by craniosynostosis, facial asymmetry, ptosis, strabismus, and distinctive ear appearance. Individuals with syndromic craniosynostosis have high rates of strabismus and ptosis, but the underlying pathology is unknown. Some individuals with syndromic craniosynostosis have been noted to have absence of individual extraocular muscles or abnormal insertions of the extraocular muscles on the globe. Using conditional knock-out alleles for Twist1 in cranial mesenchyme, we test the hypothesis that Twist1 is required for extraocular muscle organization and position, attachment to the globe, and/or innervation by the cranial nerves. We examined the extraocular muscles in conditional Twist1 knock-out animals using Twist2-cre and Pdgfrb-cre drivers. Both are expressed in cranial mesoderm and neural crest. Conditional inactivation of Twist1 using these drivers leads to disorganized extraocular muscles that cannot be reliably identified as specific muscles. Tendons do not form normally at the insertion and origin of these dysplastic muscles. Knock-out of Twist1 expression in tendon precursors, using scleraxis-cre, however, does not alter EOM organization. Furthermore, developing motor neurons, which do not express Twist1, display abnormal axonal trajectories in the orbit in the presence of dysplastic extraocular muscles. Strabismus in individuals with TWIST1 mutations may therefore be caused by abnormalities in extraocular muscle development and secondary abnormalities in innervation and tendon formation.


Asunto(s)
Acrocefalosindactilia , Craneosinostosis , Estrabismo , Proteína 1 Relacionada con Twist , Acrocefalosindactilia/complicaciones , Acrocefalosindactilia/genética , Animales , Craneosinostosis/genética , Ratones , Cresta Neural , Músculos Oculomotores , Estrabismo/complicaciones , Proteína 1 Relacionada con Twist/genética
5.
Am J Physiol Lung Cell Mol Physiol ; 325(2): L174-L189, 2023 08 01.
Artículo en Inglés | MEDLINE | ID: mdl-37366533

RESUMEN

Pneumonia elicits the production of cytotoxic beta amyloid (Aß) that contributes to end-organ dysfunction, yet the mechanism(s) linking infection to activation of the amyloidogenic pathway that produces cytotoxic Aß is unknown. Here, we tested the hypothesis that gamma-secretase activating protein (GSAP), which contributes to the amyloidogenic pathway in the brain, promotes end-organ dysfunction following bacterial pneumonia. First-in-kind Gsap knockout rats were generated. Wild-type and knockout rats possessed similar body weights, organ weights, circulating blood cell counts, arterial blood gases, and cardiac indices at baseline. Intratracheal Pseudomonas aeruginosa infection caused acute lung injury and a hyperdynamic circulatory state. Whereas infection led to arterial hypoxemia in wild-type rats, the alveolar-capillary barrier integrity was preserved in Gsap knockout rats. Infection potentiated myocardial infarction following ischemia-reperfusion injury, and this potentiation was abolished in knockout rats. In the hippocampus, GSAP contributed to both pre- and postsynaptic neurotransmission, increasing the presynaptic action potential recruitment, decreasing neurotransmitter release probability, decreasing the postsynaptic response, and preventing postsynaptic hyperexcitability, resulting in greater early long-term potentiation but reduced late long-term potentiation. Infection abolished early and late long-term potentiation in wild-type rats, whereas the late long-term potentiation was partially preserved in Gsap knockout rats. Furthermore, hippocampi from knockout rats, and both the wild-type and knockout rats following infection, exhibited a GSAP-dependent increase in neurotransmitter release probability and postsynaptic hyperexcitability. These results elucidate an unappreciated role for GSAP in innate immunity and highlight the contribution of GSAP to end-organ dysfunction during infection.NEW & NOTEWORTHY Pneumonia is a common cause of end-organ dysfunction, both during and in the aftermath of infection. In particular, pneumonia is a common cause of lung injury, increased risk of myocardial infarction, and neurocognitive dysfunction, although the mechanisms responsible for such increased risk are unknown. Here, we reveal that gamma-secretase activating protein, which contributes to the amyloidogenic pathway, is important for end-organ dysfunction following infection.


Asunto(s)
Enfermedad de Alzheimer , Neumonía Bacteriana , Ratas , Animales , Enfermedad de Alzheimer/metabolismo , Secretasas de la Proteína Precursora del Amiloide/genética , Secretasas de la Proteína Precursora del Amiloide/metabolismo , Insuficiencia Multiorgánica , Péptidos beta-Amiloides/metabolismo , Neurotransmisores
6.
Mol Cancer ; 22(1): 88, 2023 05 29.
Artículo en Inglés | MEDLINE | ID: mdl-37246217

RESUMEN

BACKGROUND: Neuroblastoma is the most common solid tumor in infants accounting for approximately 15% of all cancer-related deaths. Over 50% of high-risk neuroblastoma relapse, emphasizing the need of novel drug targets and therapeutic strategies. In neuroblastoma, chromosomal gains at chromosome 17q, including IGF2BP1, and MYCN amplification at chromosome 2p are associated with adverse outcome. Recent, pre-clinical evidence indicates the feasibility of direct and indirect targeting of IGF2BP1 and MYCN in cancer treatment. METHODS: Candidate oncogenes on 17q were identified by profiling the transcriptomic/genomic landscape of 100 human neuroblastoma samples and public gene essentiality data. Molecular mechanisms and gene expression profiles underlying the oncogenic and therapeutic target potential of the 17q oncogene IGF2BP1 and its cross-talk with MYCN were characterized and validated in human neuroblastoma cells, xenografts and PDX as well as novel IGF2BP1/MYCN transgene mouse models. RESULTS: We reveal a novel, druggable feedforward loop of IGF2BP1 (17q) and MYCN (2p) in high-risk neuroblastoma. This promotes 2p/17q chromosomal gains and unleashes an oncogene storm resulting in fostered expression of 17q oncogenes like BIRC5 (survivin). Conditional, sympatho-adrenal transgene expression of IGF2BP1 induces neuroblastoma at a 100% incidence. IGF2BP1-driven malignancies are reminiscent to human high-risk neuroblastoma, including 2p/17q-syntenic chromosomal gains and upregulation of Mycn, Birc5, as well as key neuroblastoma circuit factors like Phox2b. Co-expression of IGF2BP1/MYCN reduces disease latency and survival probability by fostering oncogene expression. Combined inhibition of IGF2BP1 by BTYNB, MYCN by BRD inhibitors or BIRC5 by YM-155 is beneficial in vitro and, for BTYNB, also. CONCLUSION: We reveal a novel, druggable neuroblastoma oncogene circuit settling on strong, transcriptional/post-transcriptional synergy of MYCN and IGF2BP1. MYCN/IGF2BP1 feedforward regulation promotes an oncogene storm harboring high therapeutic potential for combined, targeted inhibition of IGF2BP1, MYCN expression and MYCN/IGF2BP1-effectors like BIRC5.


Asunto(s)
Neuroblastoma , Animales , Humanos , Lactante , Ratones , Línea Celular Tumoral , Perfilación de la Expresión Génica , Regulación Neoplásica de la Expresión Génica , Genes myc , Proteína Proto-Oncogénica N-Myc/genética , Proteína Proto-Oncogénica N-Myc/metabolismo , Recurrencia Local de Neoplasia/genética , Neuroblastoma/tratamiento farmacológico , Neuroblastoma/genética , Neuroblastoma/metabolismo
7.
Omega (Westport) ; : 302228231215478, 2023 Nov 24.
Artículo en Inglés | MEDLINE | ID: mdl-38000081

RESUMEN

People whose family member(s) friend(s) have died from COVID-19 or other causes have been deeply affected by the physical and social restrictions imposed during the pandemic. These limitations have affected end-of-life care and support for the bereaved. The purpose of this review is to identify: the published studies of evaluated programs about interventions for people who have experienced bereavement during the COVID-19 pandemic, and to develop recommendations for researchers and policy makers. Using scoping review methodology, a literature review was undertaken for articles published from January 1, 2020 through February 28, 2023 to identify interventions shown to be beneficial to people who have experienced the death of loved ones during the COVID-19 pandemic. The search yielded 1588 articles of which three studies met the criteria of utilizing a pre and post-test design with only one of these, a randomized controlled trial. The interventions included in this review demonstrate preliminary efficacy.

8.
J Neurosci ; 41(45): 9466-9481, 2021 11 10.
Artículo en Inglés | MEDLINE | ID: mdl-34642214

RESUMEN

TSNARE1, which encodes the protein tSNARE1, is a high-confidence gene candidate for schizophrenia risk, but nothing is known about its cellular or physiological function. We identified the major gene products of TSNARE1 and their cytoplasmic localization and function in endosomal trafficking in cortical neurons. We validated three primary isoforms of TSNARE1 expressed in human brain, all of which encode a syntaxin-like Qa SNARE domain. RNA-sequencing data from adult and fetal human brain suggested that the majority of tSNARE1 lacks a transmembrane domain that is thought to be necessary for membrane fusion. Biochemical data demonstrate that tSNARE1 can compete with Stx12 for incorporation into an endosomal SNARE complex, supporting its possible role as an inhibitory SNARE. Live-cell imaging in cortical neurons from mice of both sexes demonstrated that brain tSNARE1 isoforms localized to the endosomal network. The most abundant brain isoform, tSNARE1c, localized most frequently to Rab7+ late endosomes, and endogenous tSNARE1 displayed a similar localization in human neural progenitor cells and neuroblastoma cells. In mature rat neurons from both sexes, tSNARE1 localized to the dendritic shaft and dendritic spines, supporting a role for tSNARE1 at the postsynapse. Expression of either tSNARE1b or tSNARE1c, which differ only in their inclusion or exclusion of an Myb-like domain, delayed the trafficking of the dendritic endosomal cargo Nsg1 into late endosomal and lysosomal compartments. These data suggest that tSNARE1 regulates endosomal trafficking in cortical neurons, likely by negatively regulating early endosomal to late endosomal trafficking.SIGNIFICANCE STATEMENT Schizophrenia is a severe and polygenic neuropsychiatric disorder. Understanding the functions of high-confidence candidate genes is critical toward understanding how their dysfunction contributes to schizophrenia pathogenesis. TSNARE1 is one of the high-confidence candidate genes for schizophrenia risk, yet nothing was known about its cellular or physiological function. Here we describe the major isoforms of TSNARE1 and their cytoplasmic localization and function in the endosomal network in cortical neurons. Our results are consistent with the hypothesis that the majority of brain tSNARE1 acts as a negative regulator to endolysosomal trafficking.


Asunto(s)
Corteza Cerebral/metabolismo , Endosomas/metabolismo , Neuronas/metabolismo , Proteínas SNARE/metabolismo , Esquizofrenia/metabolismo , Animales , Femenino , Humanos , Masculino , Ratones , Ratones Endogámicos C57BL , Isoformas de Proteínas/metabolismo , Transporte de Proteínas/fisiología , Ratas , Ratas Sprague-Dawley
9.
Am J Physiol Lung Cell Mol Physiol ; 323(1): L48-L57, 2022 07 01.
Artículo en Inglés | MEDLINE | ID: mdl-35672011

RESUMEN

The lungs of patients with acute respiratory distress syndrome (ARDS) have hyperpermeable capillaries that must undergo repair in an acidic microenvironment. Pulmonary microvascular endothelial cells (PMVECs) have an acid-resistant phenotype, in part due to carbonic anhydrase IX (CA IX). CA IX also facilitates PMVEC repair by promoting aerobic glycolysis, migration, and network formation. Molecular mechanisms of how CA IX performs such a wide range of functions are unknown. CA IX is composed of four domains known as the proteoglycan-like (PG), catalytic (CA), transmembrane (TM), and intracellular (IC) domains. We hypothesized that the PG and CA domains mediate PMVEC pH homeostasis and repair, and the IC domain regulates aerobic glycolysis and PI3k/Akt signaling. The functions of each CA IX domain were investigated using PMVEC cell lines that express either a full-length CA IX protein or a CA IX protein harboring a domain deletion. We found that the PG domain promotes intracellular pH homeostasis, migration, and network formation. The CA and IC domains mediate Akt activation but negatively regulate aerobic glycolysis. The IC domain also supports migration while inhibiting network formation. Finally, we show that exposure to acidosis suppresses aerobic glycolysis and migration, even though intracellular pH is maintained in PMVECs. Thus, we report that 1) the PG and IC domains mediate PMVEC migration and network formation, 2) the CA and IC domains support PI3K/Akt signaling, and 3) acidosis impairs PMVEC metabolism and migration independent of intracellular pH homeostasis.


Asunto(s)
Antígenos de Neoplasias , Anhidrasa Carbónica IX , Células Endoteliales , Pulmón , Acidosis/metabolismo , Antígenos de Neoplasias/química , Antígenos de Neoplasias/metabolismo , Anhidrasa Carbónica IX/metabolismo , Células Endoteliales/citología , Células Endoteliales/enzimología , Humanos , Concentración de Iones de Hidrógeno , Pulmón/irrigación sanguínea , Pulmón/metabolismo , Fosfatidilinositol 3-Quinasas/metabolismo , Proteoglicanos/metabolismo , Proteínas Proto-Oncogénicas c-akt/metabolismo , Microambiente Tumoral
10.
FASEB J ; 35(9): e21807, 2021 09.
Artículo en Inglés | MEDLINE | ID: mdl-34384141

RESUMEN

Pneumonia causes short- and long-term cognitive dysfunction in a high proportion of patients, although the mechanism(s) responsible for this effect are unknown. Here, we tested the hypothesis that pneumonia-elicited cytotoxic amyloid and tau variants: (1) are present in the circulation during infection; (2) lead to impairment of long-term potentiation; and, (3) inhibit long-term potentiation dependent upon tau. Cytotoxic amyloid and tau species were recovered from the blood and the hippocampus following pneumonia, and they were present in the extracorporeal membrane oxygenation oxygenators of patients with pneumonia, especially in those who died. Introduction of immunopurified blood-borne amyloid and tau into either the airways or the blood of uninfected animals acutely and chronically impaired hippocampal information processing. In contrast, the infection did not impair long-term potentiation in tau knockout mice and the amyloid- and tau-dependent disruption in hippocampal signaling was less severe in tau knockout mice. Moreover, the infection did not elicit cytotoxic amyloid and tau variants in tau knockout mice. Therefore, pneumonia initiates a tauopathy that contributes to cognitive dysfunction.


Asunto(s)
Neumonía/complicaciones , Tauopatías/etiología , Adulto , Anciano , Enfermedad de Alzheimer/etiología , Enfermedad de Alzheimer/metabolismo , Amiloide/metabolismo , Animales , Disfunción Cognitiva/etiología , Disfunción Cognitiva/metabolismo , Modelos Animales de Enfermedad , Femenino , Hipocampo/metabolismo , Humanos , Potenciación a Largo Plazo/fisiología , Masculino , Ratones , Ratones Endogámicos C57BL , Ratones Noqueados , Persona de Mediana Edad , Neumonía/metabolismo , Ratas , Tauopatías/metabolismo , Adulto Joven , Proteínas tau/metabolismo
11.
Diabet Med ; 39(5): e14715, 2022 05.
Artículo en Inglés | MEDLINE | ID: mdl-34637553

RESUMEN

Commercial hybrid closed-loop systems are becoming more readily available, yet the number of DIY artificial pancreas system (DIY APS) users continues to rise. These DIY systems have not gone through the usual regulatory approvals processes, and, thus, present a number of legal difficulties for a number of actors, including clinicians, parents who build DIY APS for their children, and users themselves. These issues have so far received insufficient attention. Due to the complex constellation of actors involved in both development of DIY APSs and in its deployment, it is not currently clear who, and to what extent, different parties might (successfully) be held liable if something goes wrong. Despite this uncertainty, unless and until clearer guidance is issued by relevant bodies, or a case appears before the courts which clarifies the situation, existing legal principles apply. In this article, we examine some of these to shed light on how the law would likely be applied if harm were to result from the use of a DIY APS.


Asunto(s)
Diabetes Mellitus Tipo 1 , Páncreas Artificial , Niño , Diabetes Mellitus Tipo 1/tratamiento farmacológico , Humanos , Sistemas de Infusión de Insulina , Padres
12.
J Nurs Scholarsh ; 54(1): 81-91, 2022 01.
Artículo en Inglés | MEDLINE | ID: mdl-34693643

RESUMEN

PURPOSE: To determine what is known about climate change health effects for gender diverse (GD) populations, and identify gaps in research, practice, education, and policy. DESIGN/METHODS: A scoping review was conducted. FINDINGS: Twenty-seven information sources met inclusion criteria. Natural disasters and inadequate disaster relief responses were identified as an overarching health threat for GD populations. Within this theme, four sub-themes emerged. No other climate-related health impacts for GD populations were mentioned in the sources reviewed. CONCLUSIONS: There are major gaps in knowledge about health implications of climate change for GD populations. Gender-sensitive data must be collected in order to better understand these threats and detect disparities. Currently most practice and policy recommendations focus on disaster relief. More research on the broad effects of climate change on GD populations is urgently needed to inform practice and policy. CLINICAL RELEVANCE: Climate change amplifies existing risks of adverse health outcomes. Because of discrimination, stigma, and violence, gender diverse individuals are particularly vulnerable.


Asunto(s)
Cambio Climático , Desastres , Humanos
13.
Hum Mol Genet ; 28(18): 3113-3125, 2019 09 15.
Artículo en Inglés | MEDLINE | ID: mdl-31211835

RESUMEN

Oculomotor synkinesis is the involuntary movement of the eyes or eyelids with a voluntary attempt at a different movement. The chemokine receptor CXCR4 and its ligand CXCL12 regulate oculomotor nerve development; mice with loss of either molecule have oculomotor synkinesis. In a consanguineous family with congenital ptosis and elevation of the ptotic eyelid with ipsilateral abduction, we identified a co-segregating homozygous missense variant (c.772G>A) in ACKR3, which encodes an atypical chemokine receptor that binds CXCL12 and functions as a scavenger receptor, regulating levels of CXCL12 available for CXCR4 signaling. The mutant protein (p.V258M) is expressed and traffics to the cell surface but has a lower binding affinity for CXCL12. Mice with loss of Ackr3 have variable phenotypes that include misrouting of the oculomotor and abducens nerves. All embryos show oculomotor nerve misrouting, ranging from complete misprojection in the midbrain, to aberrant peripheral branching, to a thin nerve, which aberrantly innervates the lateral rectus (as seen in Duane syndrome). The abducens nerve phenotype ranges from complete absence, to aberrant projections within the orbit, to a normal trajectory. Loss of ACKR3 in the midbrain leads to downregulation of CXCR4 protein, consistent with reports that excess CXCL12 causes ligand-induced degradation of CXCR4. Correspondingly, excess CXCL12 applied to ex vivo oculomotor slices causes axon misrouting, similar to inhibition of CXCR4. Thus, ACKR3, through its regulation of CXCL12 levels, is an important regulator of axon guidance in the oculomotor system; complete loss causes oculomotor synkinesis in mice, while reduced function causes oculomotor synkinesis in humans.


Asunto(s)
Actividad Motora/genética , Desempeño Psicomotor , Receptores CXCR/genética , Receptores CXCR/metabolismo , Sincinesia/etiología , Sincinesia/metabolismo , Alelos , Secuencia de Aminoácidos , Sustitución de Aminoácidos , Animales , Animales Modificados Genéticamente , Biomarcadores , Análisis Mutacional de ADN , Modelos Animales de Enfermedad , Técnica del Anticuerpo Fluorescente , Expresión Génica , Estudios de Asociación Genética , Ligamiento Genético , Predisposición Genética a la Enfermedad , Genotipo , Humanos , Inmunohistoquímica , Ratones , Mutación , Linaje , Polimorfismo de Nucleótido Simple , Transporte de Proteínas , Receptores CXCR/química , Sincinesia/diagnóstico , Sincinesia/fisiopatología
14.
Mod Pathol ; 34(1): 32-41, 2021 01.
Artículo en Inglés | MEDLINE | ID: mdl-32719445

RESUMEN

Anaplastic thyroid carcinomas (ATC) are rare, but represent the most lethal malignancy of the thyroid. Selective molecular markers and drivers distinguishing ATC from other thyroid carcinomas of follicular origin remain largely unknown, limiting advances in diagnosis and treatment. In a retrospective study, we analyzed gene expression in 36 ATC, 18 poorly differentiated, 132 papillary, and 55 follicular thyroid carcinoma, as well as 124 paired and unpaired normal thyroid tissues in three independent cohorts by RNA-sequencing and immunohistochemistry. RNA-sequencing data in the test cohort suggested selective ATC protein biomarkers. Evaluation of these revealed that ATCs are characterized by the de novo expression of various testis antigens, including melanoma-associated antigen A3 (MAGEA3), but most importantly the oncofetal IGF2 mRNA binding protein 1 (IGF2BP1). Shallow whole genome sequencing essentially excluded that IGF2BP1 upregulation results from gene copy number alterations. Immunohistochemical analyses in all three tumor cohorts confirmed the selective de novo expression of IGF2BP1 protein in ATC. In sum, 75% (27/36) of all tested ATC and 0.5% (1/204) of poorly and well-differentiated thyroid carcinoma tissue samples were positive for IGF2BP1 protein. This indicates that IGF2BP1 protein expression identifies ATC with a diagnostic odds ratio of 612 (95% CI: 74.6-5021). In addition, we found that MAGEA3 is exclusively, although less consistently upregulated in ATC, presenting with an odds ratio of 411 (95% CI: 23.8-7098.7). Importantly, we provide confirmatory evidence that IGF2BP1 and MAGEA3 expression distinguishes ATC from poorly differentiated thyroid carcinoma. IGF2BP1 furthermore identified ATC foci within low-grade follicular thyroid carcinoma. In conclusion, IGF2BP1 represents the most promising single-gene marker available for ATC, followed by MAGEA3, improving on current techniques. Robust markers are essential to help distinguish this high-grade malignancy from other thyroid carcinomas, to guide surgical decision making, therapy and post-resection/therapy monitoring strategies.


Asunto(s)
Biomarcadores de Tumor/metabolismo , Proteínas de Unión al ARN/biosíntesis , Carcinoma Anaplásico de Tiroides/diagnóstico , Neoplasias de la Tiroides/diagnóstico , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Antígenos de Neoplasias/biosíntesis , Niño , Femenino , Humanos , Masculino , Persona de Mediana Edad , Proteínas de Neoplasias/biosíntesis , Estudios Retrospectivos , Carcinoma Anaplásico de Tiroides/metabolismo , Neoplasias de la Tiroides/metabolismo , Adulto Joven
15.
MMWR Morb Mortal Wkly Rep ; 69(23): 693-698, 2020 Jun 12.
Artículo en Inglés | MEDLINE | ID: mdl-32525855

RESUMEN

Pneumoconioses are preventable occupational lung diseases caused by inhaling dust particles such as coal dust or different types of mineral dusts (1). To assess recent trends in deaths associated with pneumoconiosis, CDC analyzed multiple cause-of-death data*,† for decedents aged ≥15 years for the years 1999-2018, and industry and occupation data collected from 26 states§ for the years 1999, 2003, 2004, and 2007-2013. During 1999-2018, pneumoconiosis deaths decreased by 40.4%, with the exception of pneumoconiosis attributed to other inorganic dusts (e.g., aluminum, bauxite, beryllium, iron, and tin oxide), which increased significantly (p-value for time trend <0.05). The largest observed decreases in pneumoconiosis deaths were for those associated with coal workers' pneumoconiosis (69.6%) and silicosis (53.0%). Asbestosis was the most frequently reported pneumoconiosis and was associated with working in the construction industry. The ongoing occurrence of deaths associated with pneumoconiosis underscores the importance of occupational dust exposure reduction, early case detection, and continued surveillance to monitor trends.


Asunto(s)
Neumoconiosis/mortalidad , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estados Unidos/epidemiología , Adulto Joven
16.
J Med Ethics ; 2020 Oct 06.
Artículo en Inglés | MEDLINE | ID: mdl-33023977

RESUMEN

Population-level biomedical research offers new opportunities to improve population health, but also raises new challenges to traditional systems of research governance and ethical oversight. Partly in response to these challenges, various models of public involvement in research are being introduced. Yet, the ways in which public involvement should meet governance challenges are not well understood. We conducted a qualitative study with 36 experts and stakeholders using the World Café method to identify key governance challenges and explore how public involvement can meet these challenges. This brief report discusses four cross-cutting themes from the study: the need to move beyond individual consent; issues in benefit and data sharing; the challenge of delineating and understanding publics; and the goal of clarifying justifications for public involvement. The report aims to provide a starting point for making sense of the relationship between public involvement and the governance of population-level biomedical research, showing connections, potential solutions and issues arising at their intersection. We suggest that, in population-level biomedical research, there is a pressing need for a shift away from conventional governance frameworks focused on the individual and towards a focus on collectives, as well as to foreground ethical issues around social justice and develop ways to address cultural diversity, value pluralism and competing stakeholder interests. There are many unresolved questions around how this shift could be realised, but these unresolved questions should form the basis for developing justificatory accounts and frameworks for suitable collective models of public involvement in population-level biomedical research governance.

17.
Int J Mol Sci ; 21(14)2020 Jul 19.
Artículo en Inglés | MEDLINE | ID: mdl-32707690

RESUMEN

Neuroblastoma is a common childhood cancer with almost a third of those affected still dying, thus new therapeutic strategies need to be explored. Current experimental therapies focus mostly on inhibiting oncogenic transcription factor signalling. Although LIN28B, DICER and other RNA-binding proteins (RBPs) have reported roles in neuroblastoma development and patient outcome, the role of RBPs in neuroblastoma is relatively unstudied. In order to elucidate novel RBPs involved in MYCN-amplified and other high-risk neuroblastoma subtypes, we performed differential mRNA expression analysis of RBPs in a large primary tumour cohort (n = 498). Additionally, we found via Kaplan-Meier scanning analysis that 685 of the 1483 tested RBPs have prognostic value in neuroblastoma. For the top putative oncogenic candidates, we analysed their expression in neuroblastoma cell lines, as well as summarised their characteristics and existence of chemical inhibitors. Moreover, to help explain their association with neuroblastoma subtypes, we reviewed candidate RBPs' potential as biomarkers, and their mechanistic roles in neuronal and cancer contexts. We found several highly significant RBPs including RPL22L1, RNASEH2A, PTRH2, MRPL11 and AFF2, which remain uncharacterised in neuroblastoma. Although not all RBPs appear suitable for drug design, or carry prognostic significance, we show that several RBPs have strong rationale for inhibition and mechanistic studies, representing an alternative, but nonetheless promising therapeutic strategy in neuroblastoma treatment.


Asunto(s)
Neuroblastoma/genética , Neuroblastoma/metabolismo , Proteínas Oncogénicas/genética , Proteínas Oncogénicas/metabolismo , Proteínas de Unión al ARN/genética , Proteínas de Unión al ARN/metabolismo , Línea Celular Tumoral , Niño , Estudios de Cohortes , Regulación Neoplásica de la Expresión Génica , Humanos , Estimación de Kaplan-Meier , Proteína Proto-Oncogénica N-Myc/genética , Proteína Proto-Oncogénica N-Myc/metabolismo , Oncogenes , Pronóstico , ARN Mensajero/genética , ARN Mensajero/metabolismo , ARN Neoplásico/genética , ARN Neoplásico/metabolismo , Proteínas Ribosómicas/genética , Proteínas Ribosómicas/metabolismo , Factores de Riesgo
18.
Med Law Rev ; 28(2): 247-269, 2020 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-31424540

RESUMEN

There is a growing body of evidence that supports the view that research participants and the public are concerned about commercial access to health data. Evidence also suggests that attitudes are ameliorated when charity organisations are involved and where research promises to deliver 'public benefit'. To a significant extent, therefore, mechanisms that ensure the public benefit are key to sustaining public and participant support for research access to health data. As a regime founded on the concept of public benefit, charity law provides regulatory and governance mechanisms through which the public benefit of a charity is protected and promoted. This article examines the merits of charity law mechanisms and analyses their significance for governance of commercial access to health data for public benefit, using UK Biobank Ltd, a charitable company limited by guarantee, as an example. The article critically analyses three charity law mechanisms that operate to ensure that an organization providing access to data meets its public benefit requirements: charitable purposes; members' and directors' powers and duties; and accountability via the oversight powers of the Charity Commission and charity proceedings in court. The article concludes that there is potential for the charity model to be the benchmark for governing commercial access to health data for public benefit research, but notes the limitations of the model and recommends the appointment of independent data governance committees to further bolster the charity law framework.


Asunto(s)
Acceso a la Información/legislación & jurisprudencia , Bancos de Muestras Biológicas/legislación & jurisprudencia , Bancos de Muestras Biológicas/organización & administración , Organizaciones de Beneficencia/legislación & jurisprudencia , Organizaciones de Beneficencia/organización & administración , Comercio/legislación & jurisprudencia , Difusión de la Información/legislación & jurisprudencia , Acceso a la Información/psicología , Consejo Directivo , Humanos , Responsabilidad Social , Síndicos , Reino Unido
19.
Med J Aust ; 210 Suppl 6: S12-S16, 2019 04.
Artículo en Inglés | MEDLINE | ID: mdl-30927466

RESUMEN

In Australia, there is limited use of primary health care data for research and for data linkage between health care settings. This puts Australia behind many developed countries. In addition, without use of primary health care data for research, knowledge about patients' journeys through the health care system is limited. There is growing momentum to establish "big data" repositories of primary care clinical data to enable data linkage, primary care and population health research, and quality assurance activities. However, little research has been conducted on the general public's and practitioners' concerns about secondary use of electronic health records in Australia. International studies have identified barriers to use of general practice patient records for research. These include legal, technical, ethical, social and resource-related issues. Examples include concerns about privacy protection, data security, data custodians and the motives for collecting data, as well as a lack of incentives for general practitioners to share data. Addressing barriers may help define good practices for appropriate use of health data for research. Any model for general practice data sharing for research should be underpinned by transparency and a strong legal, ethical, governance and data security framework. Mechanisms to collect electronic medical records in ethical, secure and privacy-controlled ways are available. Before the potential benefits of health-related data research can be realised, Australians should be well informed of the risks and benefits so that the necessary social licence can be generated to support such endeavours.


Asunto(s)
Investigación Biomédica/normas , Registros Electrónicos de Salud/organización & administración , Ética Médica , Difusión de la Información , Atención Primaria de Salud/normas , Australia , Seguridad Computacional/legislación & jurisprudencia , Medicina General/educación , Regulación Gubernamental , Humanos
20.
Med Law Int ; 17(3): 158-182, 2017 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-28943725

RESUMEN

Genome-wide sequencing technologies are beginning to be used in projects that have both clinical diagnostic and research components. The clinical application of this technology, which generates a huge amount of information of varying diagnostic certainty, involves addressing a number of challenges to establish appropriate standards. In this article, we explore the way that UK law may respond to three of these key challenges and could establish new legal duties in relation to feedback of findings that are unrelated to the presenting condition (secondary, additional or incidental findings); duties towards genetic relatives as well as the patient and duties on the part of researchers and professionals who do not have direct contact with patients. When considering these issues, the courts will take account of European and international comparisons, developing guidance and relevant ethical, social and policy factors. The UK courts will also be strongly influenced by precedent set in case law.

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