40,297 results match your criteria: "4440Université Laval[Affiliation]"

Metabolic dysfunction-associated steatotic liver disease (MASLD) describes liver diseases caused by the accumulation of triglycerides in hepatocytes (steatosis) as well as the resulting inflammation and fibrosis. Previous studies have demonstrated that accumulation of fat in visceral adipose tissue compartments and the liver is associated with alterations in the circulating levels of some amino acids, notably glutamate. This study aimed to investigate the associations between circulating amino acids, particularly glutamate, and MASLD.

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Introduction: People with schizophrenia spectrum disorders present with language dysfunctions, yet we know little about their use of reference markers (indefinite markers, definite markers, pronouns or names), a fundamental aspect of efficient speech production.

Methods: Twenty-five (25) participants with a recent-onset schizophrenia spectrum disorder (SZ) and 25 healthy controls (HC) completed two referential communication tasks. The tasks involved presenting to an interaction partner a series of movie characters (character identification task) and movie scenes composed of six images (narration task).

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Relative age effects in ice hockey extends to coaching.

Front Sports Act Living

January 2025

Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, ON, Canada.

Date of birth influences the chances of success in sports. Compared to players born just before a cutoff date for marking the admissibility in a category (age groups), players born soon after are overrepresented. However, it is not yet known whether the effect of date of birth in sports applies beyond the players' active participation in the game.

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Blood carries some of the most valuable biomarkers for disease screening as it interacts with various tissues and organs in the body. Human blood serum is a reservoir of high molecular weight fraction (HMWF) and low molecular weight fraction (LMWF) proteins. The LMWF proteins are considered disease marker proteins and are often suppressed by HMWF proteins during analysis.

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Background: Inconsistencies in the workup of labral tears in the hip have been shown to result in a delay in treatment and an increased cost to the medical system.

Purpose: To establish consensus statements among Canadian nonoperative/operative sports medicine physicians via a modified Delphi process on the diagnosis, nonoperative and operative management, and rehabilitation and return to play (RTP) of those with labral tears in the hip.

Study Design: A consensus statement.

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Background: This longitudinal study with multi-informant (maternal, paternal, and experimenter) and multimethod (questionnaires, behavioral observations, and standardized assessments) data tests an intergenerational model from mothers' adverse childhood experiences (ACEs) to their children's socio-emotional and cognitive outcomes.

Methods: Participants were 501 children (50.7% male) and caregivers (56.

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Comparative Analyses of Hidradenitis Suppurativa Surgical Methods: A Systematic Review and Meta-Analysis.

J Am Acad Dermatol

January 2025

Department of Medicine, Division of Dermatology, Women's College Hospital, Toronto, Ontario, Canada; Department of Medicine, Division of Dermatology, University Health Network, Toronto, Ontario, Canada. Electronic address:

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Poor agreement among asthma specialists on the choice and timing of initiation of a biologic treatment for severe asthma patients.

J Allergy Clin Immunol Pract

January 2025

Observational and Pragmatic Research Institute, Singapore, Singapore; Optimum Patient Care Global, Cambridge, UK; Centre of Academic Primary Care, Division of Applied Health Sciences, University of Aberdeen, Aberdeen, United Kingdom. Electronic address:

Background: As the number of monoclonal antibodies available for severe asthma is growing, specialists currently choose without clear guidelines. Despite increasing knowledge on treatment response to these monoclonal antibodies, making the optimal choice for each individual patient remains a challenge. However, evidence of this daily challenge is lacking.

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A collagen-based laboratory model to mimic sex-specific features of calcific aortic valve disease.

Acta Biomater

January 2025

Department of Mining and Materials Engineering, McGill University, 3610 Rue University, Montreal, QC H3A 0C5, Canada. Electronic address:

Calcific aortic valve disease (CAVD) shows in the deposition of calcium phosphates in the collagen-rich layer of the valve leaflets. This stiffens the leaflets and eventually leads to heart failure. Recent research suggests that CAVD follows sex-specific pathways: at the same severity of the disease, women tend to have fewer and less crystalline calcifications, and the phases of their calcifications are decidedly different than those of men; namely, dicalcium phosphate dihydrate (DCPD) - one of the mineral phases in CAVD - occurs almost exclusively in females.

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Background: Pneumococcal conjugate vaccines (PCVs) introduced in childhood national immunization programs lowered vaccine-type invasive pneumococcal disease (IPD), but replacement with non-vaccine-types persisted throughout the PCV10/13 follow-up period. We assessed PCV10/13 impact on pneumococcal meningitis incidence globally.

Methods: The number of cases with serotyped pneumococci detected in cerebrospinal fluid and population denominators were obtained from surveillance sites globally.

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CHD6 has poly(ADP-ribose)- and DNA-binding domains and regulates PARP1/2-trapping inhibitor sensitivity via abasic site repair.

Nat Commun

January 2025

Robson DNA Science Centre, Charbonneau Cancer Institute, Department of Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.

To tolerate oxidative stress, cells enable DNA repair responses often sensitive to poly(ADP-ribose) (PAR) polymerase 1 and 2 (PARP1/2) inhibition-an intervention effective against cancers lacking BRCA1/2. Here, we demonstrate that mutating the CHD6 chromatin remodeler sensitizes cells to PARP1/2 inhibitors in a manner distinct from BRCA1, and that CHD6 recruitment to DNA damage requires cooperation between PAR- and DNA-binding domains essential for nucleosome sliding activity. CHD6 displays direct PAR-binding, interacts with PARP-1 and other PAR-associated proteins, and combined DNA- and PAR-binding loss eliminates CHD6 relocalization to DNA damage.

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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: 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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Combined Effects of Spirulina Liquid Extract and Endurance Training on Aerobic Performance and Muscle Metabolism Adaptation in Wistar Rats.

Nutrients

January 2025

BiOSSE, Biology of Organisms, Stress, Health, Environment, Institut Universitaire de Technologie, Département Génie Biologique, Le Mans Université, 53020 Laval, France.

Background: Physical activity, such as running, protects against cardiovascular disease and obesity but can induce oxidative stress. Athletes often consume antioxidants to counteract the overproduction of reactive oxygen and nitrogen species during exercise. , particularly its phycocyanin content, activates the Nrf2 pathway, stimulating antioxidant responses.

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The Effect of Relative Humidity on Creep Behavior of Cement Paste Microprism.

Materials (Basel)

January 2025

Department of Civil Engineering, Laval University, Québec City, QC G1V 0A6, Canada.

Despite decades of extensive studies, the mechanism of concrete creep remains a subject of debate, mainly due to the complex nature of cement microstructure. This complexity is further amplified by the interplay between water and the cement microstructure. The present study aimed to better understand the creep mechanism through creep tests on microprisms of cement paste at hygral equilibrium.

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This study explores the optimisation of rearing substrates for black soldier fly larvae (BSFL). First, the ideal dry matter content of substrates was determined, comparing the standard 30% dry matter (DM) with substrates hydrated to their maximum water holding capacity (WHC). Substrates at maximal WHC yielded significantly higher larval survival rates ( = 0.

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In Vitro Insights into Bacteriocin-Mediated Modulation of Chicken Cecal Microbiota.

Int J Mol Sci

January 2025

Food Science Department, Food and Agriculture Faculty, Université Laval, Quebec, QC G1V 0A6, Canada.

Reducing the use of antibiotics in animal husbandry is essential to limit the spread of resistance. A promising alternative to antibiotics resides in bacteriocins, which are antimicrobial peptides produced by bacteria showing a great diversity in terms of spectrum of activity, structure, and mechanism of action. In this study, the effects of diverse bacteriocins on the composition and metabolic activity of chicken cecal microbiota were examined in vitro, in comparison with antibiotics.

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: The global spread of carbapenem-resistant (CRPA) warrants collaborative action. Guidance should come from integrated One Health surveillance; however, a surveillance strategy is currently unavailable due to insufficient knowledge on the sources and transmission routes of CRPA. The aim of the SAMPAN study ("A Smart Surveillance Strategy for Carbapenem-resistant ") is to develop a globally applicable surveillance strategy.

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: Traumatic brain injury (TBI) occurs after a sudden mechanical force to the skull and represents a significant public health problem. Initial brain trauma triggers secondary pathophysiological processes that induce structural and functional impairment of the central nervous system, even in the regions distant to the lesion site. Later in life, these changes can be manifested as neurodegenerative sequalae that commonly involve proteinopathies, such as transactive DNA-binding protein 43 (TDP-43).

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: Rising costs and demands for improved quality of care present complex challenges for existing healthcare systems. The strain on healthcare resources is exacerbated by the increasing complexity of patient conditions. The Diagnosis-Related Group (DRG) system classifies inpatients according to clinical and treatment criteria, controls healthcare expenditures, and ensures the sustainability of procedures.

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This study explores for the first time the impact of a 6-day germination process on the structure (FTIR), antioxidant activity, nutritional/safety attributes (ACE-I inhibitory activity, digestibility, and cytotoxicity), and functional properties of fractions of variable molecular weight (W > 5 kDa; 3 kDa < MW < 5 kDa; and MW < 3 kDa) isolated from proteins extracted from lentils. FTIR results indicated a substantial increase in β-sheet contents during germination. The digestibility of proteins increased from day 0 (16.

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Objective: To conduct the first meta-analysis using only prospective studies to evaluate whether video endoscopic inguinal lymphadenectomy (VEIL) offers advantages in perioperative outcomes compared to open IL (OIL) in patients with penile cancer.

Methods: A systematic review with meta-analysis was conducted across multiple databases, including Cochrane Central Register of Controlled Trials (CENTRAL), the Medical Literature Analysis and Retrieval System Online (MEDLINE), Excerpta Medica dataBASE (EMBASE), Latin America and Caribbean Health Sciences Literature (LILACS), Scopus, Web of Science, and several trial registries up to June 2024. Only randomised controlled trials (RCTs) and prospective cohort studies were included.

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The brain presents various structural and functional sex differences, for which multiple factors are attributed: genetic, epigenetic, metabolic, and hormonal. While biological sex is determined by both sex chromosomes and sex hormones, little is known about how these two factors interact to establish this dimorphism. Sex differences in the brain also affect its resident immune cells, microglia, which actively survey the brain parenchyma and interact with sex hormones throughout life.

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Background: The COVID-19 pandemic has led governments worldwide to make ethically controversial decisions. As a result, healthcare professionals are facing several ethical dilemmas, especially in terms of healthcare services provided to senior citizens. Thus, the aim of this review is to identify and categorize ethical dilemmas as well as propose solutions regarding health care services for elderly individuals.

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