1,158,206 results match your criteria: "Canada; the Richardson Center for Functional Foods and Nutraceuticals[Affiliation]"

Background: Black women and other minorities have higher age adjusted incidence risk for cervical and endometrial cancer than White women. However, the extent of racial and ethnic disparities in clinical trial enrollment among studies performed mainly in North America and Europe for gynecologic malignancy is unknown.

Objective: This study analyzed enrollment rates by race/ethnicity in trials that led to Food and Drug Administration (FDA) approvals for gynecological cancers from 2010 to 2024.

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Volumetric alterations in auditory and visual subcortical nuclei following perinatal deafness in felines.

Neuroimage

January 2025

Integrated Program in Neuroscience, McGill University, Montreal, Quebec, Canada; Department of Physiology, McGill University, Montreal, Quebec, Canada. Electronic address:

In response to sensory deprivation, the brain adapts to efficiently navigate a modified perceptual environment through a process referred to as compensatory crossmodal plasticity, allowing the remaining senses to repurpose deprived regions and networks. A mechanism that has been proposed to contribute to this plasticity involves adaptations within subcortical nuclei that trigger cascading effects throughout the brain. The current study uses 7T MRI to investigate the effect of perinatal deafness on the volumes of subcortical structures in felines, focusing on key sensory nuclei within the brainstem and thalamus.

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Dynamic cycles between brain states during creative storytelling.

Neuroimage

January 2025

State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern, Institute for Brain Research, Beijing Normal University, Beijing 100875, PR China. Electronic address:

Many theories suggest that creative thinking involves a dynamic transition between different mental states, yet empirical evidence supporting this notion remains scarce. The dual process model proposes that spontaneous thinking and deliberate thinking drive the dwell in and the transitions between different mental states during creative thinking, but there is a debate over whether the two types of thinking operate in parallel or in sequence. To address these gaps, we conducted a functional magnetic resonance imaging (fMRI) study in 41 college students during a creative storytelling task.

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Bladder rupture in late-pregnancy mares: four cases.

J Equine Vet Sci

January 2025

Clinique Vétérinaire Équine du Harfang, Varennes, Quebec, Canada.

This case series reports four late pregnancy broodmares that were diagnosed with bladder rupture. The initial presentations were abdominal discomfort (n=3) and dystocia (n=1). All mares (n=4) were overdue or at their expected time of delivery.

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During the COVID-19 pandemic, healthcare workers (HCWs) experienced several changes in their work (e.g., longer hours, new policies) that affected their mental health.

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Virtual reality for reduction of intraprocedural pharmacological sedation and analgesia in adult patients: A systematic review and meta-analysis.

Anaesth Crit Care Pain Med

January 2025

Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, Montréal, QC, Canada; Université de Montréal, Montréal, QC, Canada; Maisonneuve-Rosemont Hospital Research Center, Montreal, QC, Canada.

Background: Pharmacological sedation and analgesia are used to alleviate discomfort during awake medical procedures but can cause adverse effects like apnea and hypoxemia, increasing the need for airway management and prolonging recovery. Virtual reality (VR) has emerged as a non-pharmacological intervention to reduce the need for procedural sedatives and analgesics.

Methods: A systematic review and meta-analysis were conducted, assessing the impact of VR immersion on intraprocedural sedation and analgesia usage in adults (≥ 18 years).

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Scoping review of registration of observational studies finds inadequate registration policies, increased registration, and a debate converging towards pro-registration.

J Clin Epidemiol

January 2025

Centre for Evidence-Based Medicine Odense (CEBMO) and Cochrane Denmark, Department of Clinical Research, University of Southern Denmark, Odense, Denmark; Open Patient data Exploratory Network (OPEN), Odense University Hospital, Odense, Denmark.

Objective: We aimed to examine a) the policies of national and international clinical trial registries regarding observational studies; b) the time-trends of observational study registration; c) the published arguments for and against observational study registration.

Study Design And Setting: Scoping review of registry practices and published arguments. We searched the websites and databases of all 19 members of the World Health Organization's Registry Network to identify policies relating to observational studies and the number of observational studies registered annually from the beginning of the registries to 2022.

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Background: While SBRT to NSBM has become common, particularly in the oligometastatic population, the approach to treating non-spine bone metastases (NSBM) with stereotactic body radiotherapy (SBRT) varies widely across institutions and clinical trial protocols. We present a comprehensive systematic review of the literatures to inform practice recommendations on behalf of the International Stereotactic Radiosurgery Society (ISRS).

Methods: A systematic literature review was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines.

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Dosimetric comparison of CyberKnife and conventional linac prostate SBRT plans: analysis of the PACE-B Study.

Int J Radiat Oncol Biol Phys

January 2025

The Royal Marsden NHS Foundation Trust, London SM2 5PT, UK; Radiotherapy and Imaging Division, Institute of Cancer Research, London SM2 5NG, UK.

Purpose: In the PACE-B study, a non-randomised comparison of toxicity outcomes between stereotactic body radiotherapy (SBRT) platforms revealed fewer urinary side-effects with CyberKnife (CK) compared to conventional linac (CL) SBRT. This analysis compares baseline characteristics and planning dosimetry between the CK-SBRT and CL-SBRT cohorts in PACE-B, aiming to provide insight into possible reasons for differing toxicity outcomes between the platforms.

Methods: Dosimetric parameters for the surrogate urethra (SU), contoured urethra, bladder, bladder trigone (BT), and rectum were extracted from available CT planning scans of PACE-B SBRT patients.

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Anticoagulation for patients with device-detected atrial fibrillation and a history of stroke.

Lancet Neurol

February 2025

Department of Cardiology, University Hospital Leipzig, Leipzig, Germany; Clinic for Cardiology and Pneumology, University Medicine Göttingen, Germany; German Centre for Cardiovascular Research (DZHK), Partner Site Göttingen, Germany.

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Amyotrophic lateral sclerosis caused by FUS mutations: advances with broad implications.

Lancet Neurol

February 2025

Department of Neurosciences, and Leuven Brain Institute, University of Leuven, Leuven, Belgium; Laboratory of Neurobiology, Center for Brain & Disease Research, VIB, Leuven, Belgium. Electronic address:

Autosomal dominant mutations in the gene encoding the DNA and RNA binding protein FUS are a cause of amyotrophic lateral sclerosis (ALS), and about 0·3-0·9% of patients with ALS are FUS mutation carriers. FUS-mutation-associated ALS (FUS-ALS) is characterised by early onset and rapid progression, compared with other forms of ALS. However, different pathogenic mutations in FUS can result in markedly different age at symptom onset and rate of disease progression.

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Background: People with subclinical atrial fibrillation are at increased risk of stroke, albeit to a lesser extent than those with clinical atrial fibrillation, leading to an ongoing debate regarding the benefit of anticoagulation in these individuals. In the ARTESiA trial, the direct-acting oral anticoagulant apixaban reduced stroke or systemic embolism compared with aspirin in people with subclinical atrial fibrillation, but the risk of major bleeding was increased with apixaban. In a prespecified subgroup analysis of ARTESiA, we tested the hypothesis that people with subclinical atrial fibrillation and a history of stroke or transient ischaemic attack, who are known to have an increased risk of recurrent stroke, would show a greater benefit from oral anticoagulation for secondary stroke prevention compared with those without a history of stroke or transient ischaemic attack.

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Intranasal oxytocin for apathy in people with frontotemporal dementia (FOXY): a multicentre, randomised, double-blind, placebo-controlled, adaptive, crossover, phase 2a/2b superiority trial.

Lancet Neurol

February 2025

Department of Clinical Neurological Sciences, University of Western Ontario, London, ON, Canada; Department of Cognitive Neurology, St Joseph's Health Care London, London, ON, Canada. Electronic address:

Background: No treatments exist for apathy in people with frontotemporal dementia. Previously, in a randomised double-blind, placebo-controlled, dose-finding study, intranasal oxytocin administration in people with frontotemporal dementia improved apathy ratings on the Neuropsychiatric Inventory over 1 week and, in a randomised, double-blind, placebo-controlled, crossover study, a single dose of 72 IU oxytocin increased blood-oxygen-level-dependent signal in limbic brain regions. We aimed to determine whether longer treatment with oxytocin improves apathy in people with frontotemporal dementia.

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Background: Given burdensome side-effects and long latency for efficacy with conventional agents, there is a continued need for generalised myasthenia gravis treatments that are safe and provide consistently sustained, long-term disease control. Nipocalimab, a neonatal Fc receptor blocker, was associated with dose-dependent reductions in total IgG and anti-acetylcholine receptor (AChR) antibodies and clinically meaningful improvements in the Myasthenia Gravis Activities of Daily Living (MG-ADL) scale in patients with generalised myasthenia gravis in a phase 2 study. We aimed to assess the safety and efficacy of nipocalimab in a phase 3 study.

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Long-lived cytokinetic bridges coordinate sister-cell elimination in mouse embryos.

Dev Cell

January 2025

Centre de recherche du Centre Hospitalier de I'Université de Montréal (CRCHUM), Montréal, QC H2X 0A9, Canada; Department of Obstetrics and Gynaecology, and Department of Pathology and Cell Biology, Université de Montréal, Montréal, QC H3T 1C5, Canada. Electronic address:

Apoptosis is a key feature of preimplantation development, but whether it occurs in a cell-autonomous or coordinated manner was unknown. Here, we report that plasma membrane abscission, the final step of cell division, is profoundly delayed in early mouse embryos such that a cytokinetic bridge is maintained for the vast majority of the following interphase. Early embryos thus consist of many pairs of sister cells connected by stable cytokinetic bridges that allow them to share diffusible molecules.

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A forward genetic screen identifies potassium channel essentiality in SHH medulloblastoma maintenance.

Dev Cell

January 2025

Developmental and Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada; Arthur and Sonia Labatt Brain Tumour Research Centre, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada. Electronic address:

Distinguishing tumor maintenance genes from initiation, progression, and passenger genes is critical for developing effective therapies. We employed a functional genomic approach using the Lazy Piggy transposon to identify tumor maintenance genes in vivo and applied this to sonic hedgehog (SHH) medulloblastoma (MB). Combining Lazy Piggy screening in mice and transcriptomic profiling of human MB, we identified the voltage-gated potassium channel KCNB2 as a candidate maintenance driver.

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Ligand interaction landscape of transcription factors and essential enzymes in E. coli.

Cell

January 2025

Program in Bioinformatics, Boston University, Boston, MA 02215, USA; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada; Center for Network Systems Biology, Boston University, Boston, MA 02218, USA; Department of Chemistry, Boston University, Boston, MA 02215, USA; Department of Chemical Physiology and Biochemistry, Division of Oncological Sciences, Knight Cancer Institute, Oregon Health and Science University, Portland, OR, USA. Electronic address:

Knowledge of protein-metabolite interactions can enhance mechanistic understanding and chemical probing of biochemical processes, but the discovery of endogenous ligands remains challenging. Here, we combined rapid affinity purification with precision mass spectrometry and high-resolution molecular docking to precisely map the physical associations of 296 chemically diverse small-molecule metabolite ligands with 69 distinct essential enzymes and 45 transcription factors in the gram-negative bacterium Escherichia coli. We then conducted systematic metabolic pathway integration, pan-microbial evolutionary projections, and independent in-depth biophysical characterization experiments to define the functional significance of ligand interfaces.

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Recyclability and recovery of carbon from waste printed circuit boards within a circular economy perspective: A review.

J Environ Manage

January 2025

Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC, H3G 1M8, Canada. Electronic address:

Waste printed circuit boards (WPCBs) are a significant component of electronic waste (e-waste) and are among the fastest-generating waste flows. The potentially negative impacts caused by e-waste on the environment and human health pose an increasingly apparent threat to people's everyday lives and well-being. The nonmetallic fraction (predominantly carbon) of WPCBs is characterized by heavy weight, low resource value, and complex composition, and these characteristics significantly restrict the recycling of the WPCBs to achieve a circular economy.

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The kinetics of aqueous thiolated arsenic oxidation.

J Hazard Mater

January 2025

Department of Geological Sciences & Engineering, Queen's University, Kingston, Ontario, Canada. Electronic address:

Thiolated arsenic (As) compounds have been identified in various natural and engineered environments worldwide and are important for the biogeochemical cycling of As, yet quantitative data regarding their stability and transformation rates remains scarce. This study investigates the oxidation kinetics of mono-, di-, and tri-thioarsenate at varying pH, Fe, and (thio-)As concentrations in the aqueous phase. Experiments conducted over four weeks revealed that all thioarsenates were oxidized faster at lower pH, with rates of up to several μmoles/L/d at a pH of 3.

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Characterization of senescence-associated transcripts in the human placenta.

Placenta

January 2025

Magee-Women's Research Institute, Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh, Pittsburgh, PA, 15213, USA; Department of Microbiology and Molecular Genetics, University of Pittsburgh, Pittsburgh, PA, 15213, USA. Electronic address:

Introduction: Fusion of mononucleated cytotrophoblasts into syncytium leads to trophoblast senescence. Yet, premature senescence is associated with preeclampsia, fetal growth restriction (FGR), and related obstetrical syndromes. A set of 28 transcripts that comprise senescence-associated secretory phenotype (SASP) was recently described in placentas from women with preeclampsia.

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Motor variability regulation analysis in trampolinists.

J Biomech

January 2025

Laboratoire de Simulation et Modélisation du Mouvement, Université de Montréal, Montréal, QC, Canada. Electronic address:

In trampolining, optimizing body orientation during landing reduces injury risk and enhances performance. As trampolinists are subject to motor variability, anticipatory inflight corrections are necessary to regulate their body orientation before landing. We investigated the evolution of a) body orientation and b) limb position (i.

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Microplastics, particles between 0.001 and 5 mm in diameter, are ubiquitous in the environment and their consumption by aquatic organisms is known to lead to a variety of adverse effects. However, studies on the effects of microplastics on prey fish have not shown consistent trends, with results varying across species and plastic type used.

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Background: Childhood Interpersonal Trauma (CIT) is a major public health issue that increases the risk of perpetrating and sustaining intimate partner violence (IPV) in adulthood, perpetuating intergenerational cycles of violence. Yet, the explanatory mechanisms behind the intergenerational transmission of trauma warrant further exploration.

Objective: This study explored identity diffusion as an explanatory mechanism linking cumulative and individual CIT (sexual, physical and psychological abuse, physical and psychological neglect, witnessing parental physical or psychological IPV, bullying) to IPV (sexual, physical, psychological, coercive control) and to the next generation's exposure to family violence.

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Analysis of pathogen distribution, drug sensitivity and inflammatory indicators related to pelvic infection after hysterectomy.

Eur J Obstet Gynecol Reprod Biol

January 2025

Women's Hospital of Nanjing Medical University, Nanjing Women and Children's Healthcare Hospital, Nanjing, Jiangsu, PR China. Electronic address:

Objective: To analyse the distribution of pathogens, risk factors and inflammatory indicators related to pelvic infection after hysterectomy.

Methods: Patients who underwent hysterectomy at Women's Hospital of Nanjing Medical University between January 2022 and January 2023 were recruited into this study. Vaginal secretions from patients with suspected postoperative pelvic infection were collected for pathogen cultivation, identification, and antimicrobial susceptibility analysis.

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