1,158,820 results match your criteria: "Canada.; Centre de recherche du Centre Hospitalier de l'Universite de Montreal CRCHUM[Affiliation]"

The question of what processes can take place without conscious awareness has generated extensive research. Yet there is still no consensus regarding the extent and scope of unconscious processing, and past research abounds with conflicting results. A possible reason for this lack of consensus is the diversity of methods in the field, as the methodological choices might influence the results.

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Short-term evolutionary implications of an introgressed size-determining supergene in a vulnerable population.

Nat Commun

January 2025

Florida Museum of Natural History, Dickinson Hall, 1659 Museum Road, Gainesville, FL, 32611, USA.

The Thorny Skate (Amblyraja radiata) is a vulnerable species displaying a discrete size-polymorphism in the northwest Atlantic Ocean (NWA). We conducted whole genome sequencing of samples collected across its range. Genetic diversity was similar at all sampled sites, but we discovered a ~ 31 megabase bi-allelic supergene associated with the size polymorphism, with the larger size allele having introgressed in the last ~160,000 years B.

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Data-driven exploration of weak coordination microenvironment in solid-state electrolyte for safe and energy-dense batteries.

Nat Commun

January 2025

Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, P. R. China.

The unsatisfactory ionic conductivity of solid polymer electrolytes hinders their practical use as substitutes for liquid electrolytes to address safety concerns. Although various plasticizers have been introduced to improve lithium-ion conduction kinetics, the lack of microenvironment understanding impedes the rational design of high-performance polymer electrolytes. Here, we design a class of Hofmann complexes that offer continuous two-dimensional lithium-ion conduction channels with functional ligands, creating highly conductive electrolytes.

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Background: Acetylsalicylic acid (ASA) has been used in reconstructive microsurgery since the inception of the field. However, when compared to placebo groups, its efficacy is not confirmed. In our study, we hypothesize that the utility of ASA postoperatively in microvascular surgery is not associated with improved outcomes.

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Tambjamines are complex bipyrrole-containing natural products that possess promising bioactive properties. Although is known to produce both cyclic tambjamine MYP1 and the linear precursor (YP1), the biosynthetic machinery used to catalyze the site-selective oxidative carbocyclization at the unactivated 1° carbon of YP1 has remained unclear. Here, we demonstrate that a three-component Rieske system consisting of an oxygenase (TamC) and two redox partner proteins is responsible for this unprecedented activity on YP1 and potentially, a non-native substrate (BE-18591).

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Coal tar-related products as a source of polycyclic aromatic compounds (PACs) are particularly concerning due to high PAC concentrations and inadequate source management. Benzo[b]carbazole, a benzocarbazole isomer exclusively found in coal tar-derived products, acts as an ideal marker to distinguish coal tar sources from others, enabling more robust quantification of coal tar contributions to PACs. To evaluate the historical and recent contributions of coal tar-related sources to the levels of PACs in Lake Ontario and associated ecological risk, we analyzed 31 PACs and 3 BCBz isomers in surface sediments and a sediment core.

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Purpose: People who are transgender or gender diverse (PTGD) often experience difficulties navigating the health care system due to a variety of factors such as lack of knowledgeable and/or culturally competent clinicians, discrimination, and structural and/or socioeconomic barriers. We sought to determine whether a peer health navigator service in the Canadian province of Saskatchewan helped connect transgender and gender-diverse clients and health care practitioners (HCPs) to resources, and how this service changed their health care experiences.

Methods: Semistructured interviews were conducted with 9 clients and 9 HCPs.

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The Soundtrack of a Clinic Day.

Ann Fam Med

January 2025

Clinical Skills Education Centre, Queen's University Belfast, Northern Ireland, United Kingdom.

There is a hum and drum to the clinical day, sounds and rhythms that pervade physician and patient's soundscape. We hear but we do not listen. The soundtrack of the daily grind is experienced as an audio blanket of white noise.

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Axons in the mammalian brain show significant diversity in myelination motifs, displaying spatial heterogeneity in sheathing along individual axons and across brain regions. However, its impact on neural signaling and susceptibility to injury remains poorly understood. To address this, we leveraged cable theory and developed model axons replicating the myelin sheath distributions observed experimentally in different regions of the mouse central nervous system.

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Choosing 'Less' Wisely as a marker of decisional conflict.

BMJ Qual Saf

January 2025

Division of Plastic Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada.

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Rethinking retinoic acid self-regulation: A signaling robustness network approach.

Curr Top Dev Biol

January 2025

Daniel Baugh Institute for Functional Genomics and Computational Biology, Department of Pathology and Genomic Medicine, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, United States. Electronic address:

All-trans retinoic acid (ATRA) signaling is a major pathway regulating numerous differentiation, proliferation, and patterning processes throughout life. ATRA biosynthesis depends on the nutritional availability of vitamin A and other retinoids and carotenoids, while it is sensitive to dietary and environmental toxicants. This nutritional and environmental influence requires a robustness response that constantly fine-tunes the ATRA metabolism to maintain a context-specific, physiological range of signaling levels.

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[Not Available].

CMAJ

January 2025

Division des maladies infectieuses (Grennan) et la British Columbia Centre for Disease Control (Grennan), University of British Columbia, Vancouver, C.-B.; Division des maladies infectieuses (Salit), University of Toronto, Toronto, Ont.; University Health Network (Salit), Toronto, Ont.

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Move more, age well: prescribing physical activity for older adults.

CMAJ

January 2025

Western Centre for Public Health and Family Medicine (Thornton); Schulich School of Medicine & Dentistry (Thornton, Morley), Western University, London, Ont.; International Olympic Committee (Thornton), Lausanne, Switzerland; Division of Geriatric Medicine, Department of Medicine (Sinha), Temerty School of Medicine, University of Toronto; National Institute on Ageing (Sinha), Toronto Metropolitan University, Toronto, Ont.

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Colchicine-induced vacuolar myopathy.

CMAJ

January 2025

Departments of Neurology and Neurosurgery (Pekeles, Altman), Pediatrics (Pekeles), and Pathology (Karamchandani), McGill University; Department of Neurology (Altman), Jewish General Hospital, Montréal, Que.

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Breathlessness dimensions should be evaluated in relation to the level of exertion: a clinical study.

Respir Physiol Neurobiol

January 2025

Respiratory Medicine, Allergology and Palliative Medicine, Department of Clinical Sciences in Lund, Lund University, Lund, Sweden.

Background/aim: Exertional breathlessness is a dominating symptom in cardiorespiratory disease, limiting exercise capacity. Multidimensional measurement has been proposed to capture breathlessness, but it is unknown whether it is useful to differentiate people with abnormal vs normal exertional breathlessness intensity.

Methods: This was a secondary analysis of a randomized controlled trial of outpatients aged ≥18 years performing a symptom-limited cycle incremental exercise test (IET).

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Financial incentives for physical activity in adults: Systematic review and meta-analysis update.

Prev Med

January 2025

School of Kinesiology, Faculty of Health Sciences, Western University, London, ON, Canada; ParticipACTION, Toronto, ON, Canada.

Objective: To update the evidence on the effects of financial incentives (FI) on physical activity (PA) in adults.

Methods: A systematic search of nine databases (Medline, EMBASE, PsychINFO, Scopus, Web of Science, CINAHL, EconLit, SPORTDiscus, and Cochrane) was conducted to identify randomised controlled trials (RCTs) and pilot RCTs published between June 1, 2018 and March 31, 2024 examining FI-for-PA interventions. 'Vote counting' and random-effects meta-analyses assessed short- (<6 months) and long-term (≥6 months) FI effects, as well as impact during follow-up (incentive withdrawal).

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Insight into enhanced tetracycline photodegradation by hematite/biochar composites: Roles of charge transfer, biochar-derived dissolved organic matter and persistent free radicals.

Bioresour Technol

January 2025

National&Local Joint Engineering Research Center of Metrology Instrument and System, College of Quality and Technical Supervision, Hebei University, Baoding 071002, China. Electronic address:

The combination of hematite and biochar significantly accelerated tetracycline (TC) removal under visible light irradiation. The k of TC removal with Hem/BC-5 reached 0.103 min, 3.

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Protein-binding therapy: a new approach to lower cholesterol.

Lancet Diabetes Endocrinol

January 2025

Department of Medicine, Schulich School of Medicine and Dentistry, Western University, London, ON N6A 5B7, Canada. Electronic address:

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Purpose: Maximal muscle strength is often assessed with single-joint or repetition-maximum testing. The purpose of this study was to evaluate the reliability of countermovement-jump (CMJ) velocity-load testing and assess the relationship between CMJ velocity-load kinetics and concentric-isometric-eccentric multijoint leg-extension strength tested on a robotic servomotor leg press in trained athletes.

Methods: University athletes (N = 203; 52% female) completed 3 concentric, isometric, and eccentric maximum voluntary leg-extension contractions on the robotic leg press, followed by CMJ velocity-load testing with an additional external load of 0% (CMJBW), 30% (CMJ30), and 60% (CMJ60) of body mass.

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