Publications by authors named "Allaire A"

This study compares the mobility behaviour, in a HO environment, of three different geometries of hybrid particle made of silica core functionalized by gold (nanoparticles or layer). It is known that the decomposition of HO on gold surfaces drives mobility; however, the link between mobility orientation and the organization of gold on silica surfaces is still questionable. While conventional wisdom posits that asymmetric designs are crucial for generating phoretic forces or localized bubble propulsion, recent research suggests that symmetrical particles may also exhibit motility.

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Aim: During the COVID-19 pandemic, many community organizations offering services to people with disabilities (PWD) changed their service delivery, switching from in-person to remote services. However, little is known about what it was like for organizations to quickly pivot their service delivery. The study explored barriers and facilitators to access community services for PWD and identified potential improvements to these services.

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Context: Acute respiratory distress syndrome (ARDS) is a highly fatal, inflammatory condition of lungs with multiple causes. There is no adequate treatment.

Objective: Using the murine LPS-induced ARDS model, we investigate SPPCT-800 (a complex lipid) as treatment for ARDS.

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Background: SARS-CoV-2 has been responsible for a pandemic since the beginning of 2020. Vaccine arrival brings a concrete solution to fight the virus. However, vaccine hesitancy is high.

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The heat carriers responsible for the unexpectedly large thermal Hall conductivity of the cuprate Mott insulator LaCuO were recently shown to be phonons. However, the mechanism by which phonons in cuprates acquire chirality in a magnetic field is still unknown. Here, we report a similar thermal Hall conductivity in two cuprate Mott insulators with significantly different crystal structures and magnetic orders - NdCuO and SrCuOCl - and show that two potential mechanisms can be excluded - the scattering of phonons by rare-earth impurities and by structural domains.

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Background: Classification of primary central nervous system tumors according to the World Health Organization guidelines follows the integration of histologic interpretation with molecular information and aims at providing the most precise prognosis and optimal patient management. According to the cIMPACT-NOW update 3, diffuse isocitrate dehydrogenase-wild type (IDH-WT) gliomas should be graded as grade IV glioblastomas (GBM) if they possess one or more of the following molecular markers that predict aggressive clinical course: EGFR amplification, TERT promoter mutation, and whole-chromosome 7 gain combined with chromosome 10 loss.

Methods: The Cancer Genome Atlas (TCGA) glioma expression datasets were reanalyzed in order to identify novel tumor subcategories which would be considered as GBM-equivalents with the current diagnostic algorithm.

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Background: Patient prioritization is a strategy used to manage access to healthcare services. Patient prioritization tools (PPT) contribute to supporting the prioritization decision process, and to its transparency and fairness. Patient prioritization tools can take various forms and are highly dependent on the particular context of application.

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Childhood brain tumors have suspected prenatal origins. To identify vulnerable developmental states, we generated a single-cell transcriptome atlas of >65,000 cells from embryonal pons and forebrain, two major tumor locations. We derived signatures for 191 distinct cell populations and defined the regional cellular diversity and differentiation dynamics.

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Objective: Traumatic brain injury (TBI) clinical practice guidelines are a potential solution to rapidly expanding literature. The project objective was to convene experts to develop a unique set of TBI rehabilitation recommendations incorporating users' priorities for format and implementation tools including indicators of adherence.

Methods: The Guidelines Adaptation & Development Cycle informed recommendation development.

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Objective: Stakeholder engagement in clinical practice guideline (CPG) creation is thought to increase relevance of CPGs and facilitate their implementation. The objectives were to survey stakeholders involved in the care of adults with traumatic brain injury (TBI) regarding general perceptions of CPGs, key elements to be included, and needs and expectations about format and implementation strategy.

Settings: Hospitals and inpatient and outpatient rehabilitation facilities providing services to persons with TBI.

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Objective: Clinical practice guidelines (CPGs) aim to improve quality and consistency of healthcare services. A Canadian group of researchers, clinicians, and policy makers developed/adapted a CPG for rehabilitation post-moderate to severe traumatic brain injury (MSTBI) to respond to end users' needs in acute care and rehabilitation settings.

Methods: The rigorous CPG development process began assessing needs and expectations of end users, then appraised existing CPGs, and, during a consensus conference, produced fundamental and priority recommendations.

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The 5' RNA cap structure (m7GpppRNA) is a key feature of eukaryotic mRNAs with important roles in stability, splicing, polyadenylation, mRNA export, and translation. Higher eukaryotes can further modify this minimal cap structure with the addition of a methyl group on the ribose 2'-O position of the first transcribed nucleotide (m7GpppNmpRNA) and sometimes on the adjoining nucleotide (m7GpppNmpNmpRNA). In higher eukaryotes, the DXO protein was previously shown to be responsible for both decapping and degradation of RNA transcripts harboring aberrant 5' ends such as pRNA, pppRNA, GpppRNA, and surprisingly, m7GpppRNA.

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Multiple human diseases including cancer have been associated with a dysregulation in RNA splicing patterns. In the current study, modifications to the global RNA splicing landscape of cellular genes were investigated in the context of Epstein-Barr virus-associated gastric cancer. Global alterations to the RNA splicing landscape of cellular genes was examined in a large-scale screen from 295 primary gastric adenocarcinomas using high-throughput RNA sequencing data.

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Background: Dysregulations in alternative splicing (AS) patterns have been associated with many human diseases including cancer. In the present study, alterations to the global RNA splicing landscape of cellular genes were investigated in a large-scale screen from 377 liver tissue samples using high-throughput RNA sequencing data.

Results: Our study identifies modifications in the AS patterns of transcripts encoded by more than 2500 genes such as tumor suppressor genes, transcription factors, and kinases.

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Gaucher disease (GD) is caused by a deficiency of glucocerebrosidase and the consequent lysosomal accumulation of unmetabolized glycolipid substrates. Enzyme-replacement therapy adequately manages the visceral manifestations of nonneuronopathic type-1 Gaucher patients, but not the brain disease in neuronopathic types 2 and 3 GD. Substrate reduction therapy through inhibition of glucosylceramide synthase (GCS) has also been shown to effectively treat the visceral disease.

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Immunofluorescence is a laboratory technique commonly used to study many aspects of biology. It is typically used to visualize the distribution and/or localization of a target molecule in cells and tissues. Immunofluorescence relies on the specificity of fluorescent-labelled antibodies against their corresponding antigens within a cell.

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Background: Rehabilitation interventions are a key component of the services required by individuals with neurotrauma to recover or compensate for altered abilities and achieve optimal social participation. Primary studies have produced evidence of the effect of rehabilitation length of stay on individuals with neurotrauma. However, to date no systematic review of this evidence has been performed.

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Introduction: Little is known about the factors that influence family physician (FP) participation in continuing professional development (CPD) programs in shared decision making (SDM). We sought to identify the factors that motivate FPs to participate in DECISION+, a CPD program in SDM.

Methods: In 2007-2008, we collected data from 39 FPs who participated in a pilot randomized trial of DECISION+.

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Background: In North America, acute respiratory infections are the main reason for doctors' visits in primary care. Family physicians and their patients overuse antibiotics for treating acute respiratory infections. In a pilot clustered randomized trial, we showed that DECISION+, a continuing medical education program in shared decision making, has the potential to reduce the overuse of antibiotics for treating acute respiratory infections.

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Objective: To obtain completely negative margins of 1 to 5 mm at the time of surgery for oral tongue squamous cell carcinoma by using a Mohs-like technique.

Study Design: Case series of 12 patients (4 T1, 5 T2, 2 T3, 1 T4) and a review of the literature.

Results: For the first six cases, complete, colored for precise orientation, frozen margins of high quality were obtained in a relatively short time (20-75 minutes).

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Objective: Positive margins for squamous cell carcinoma of the oral tongue on final pathology are a poor prognostic factor associated with a higher likelihood of local recurrence. Obtaining margin status in a relatively short time by using complete frozen sections, such as Mohs margins for skin cancer, would lower the recurrence rate. The goal of this study was to compare, on pig tongue, the efficacy of different techniques used to obtain complete frozen sections on histologic glass slides of optimal quality.

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Mammalian sperm become fertile after completing capacitation, a process associated with cholesterol loss and changes in the biophysical properties of the sperm membranes that prepares the sperm to undergo the acrosome reaction. Different laboratories have hypothesized that cholesterol efflux can influence the extent and/or movement of lipid raft microdomains. In a previous study, our laboratory investigated the identity of sperm proteins putatively associated with rafts.

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After ejaculation, mammalian sperm have not yet acquired full fertilising capacity. They will require a finite period of residence in the female reproductive tract before they become fertilisation competent. The molecular, biochemical, and physiological changes that occur to sperm while in the female tract are collectively referred to as capacitation.

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