27,378 results match your criteria: " Canada; Montreal Heart Institute[Affiliation]"

Introduction: Women with early bilateral salpingo-oophorectomy (BSO) have greater Alzheimer's disease (AD) risk than women with spontaneous menopause (SM), but the pathway toward this risk is understudied. Considering associative memory deficits may reflect early signs of AD, we studied how BSO affected brain activity underlying associative memory.

Methods: Early midlife women with BSO (with and without 17β-estradiol therapy [ET]) and age-matched controls (AMCs) with intact ovaries completed a face-name associative memory task during functional magnetic resonance imaging.

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Schizophrenia (SCZ), bipolar (BD) and major depression disorder (MDD) are severe psychiatric disorders that are challenging to treat, often leading to treatment resistance (TR). It is crucial to develop effective methods to identify and treat patients at risk of TR at an early stage in a personalized manner, considering their biological basis, their clinical and psychosocial characteristics. Effective translation of theoretical knowledge into clinical practice is essential for achieving this goal.

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: Family physicians are essential to a well-functioning healthcare system; however, they face significant administrative and cognitive burdens that contribute to their burnout and reduce the quality of patient care they provide. Digital health tools offer potential solutions to these problems. This study examined the interface design and features of a digital health platform, Carmi, designed to mitigate administrative inefficiencies and cognitive overload by asynchronous patient data gathering and automated report generation.

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How Does Deep Neural Network-Based Noise Reduction in Hearing Aids Impact Cochlear Implant Candidacy?

Audiol Res

December 2024

Division of Audiology, Department of Otolaryngology-Head and Neck Surgery, Mayo Clinic, Rochester, MN 55902, USA.

Background/objectives: Adult hearing-impaired patients qualifying for cochlear implants typically exhibit less than 60% sentence recognition under the best hearing aid conditions, either in quiet or noisy environments, with speech and noise presented through a single speaker. This study examines the influence of deep neural network-based (DNN-based) noise reduction on cochlear implant evaluation.

Methods: Speech perception was assessed using AzBio sentences in both quiet and noisy conditions (multi-talker babble) at 5 and 10 dB signal-to-noise ratios (SNRs) through one loudspeaker.

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Aims: Structured clinical interviewing is considered the gold standard in psychiatric diagnosis. The Diagnostic Assessment Research Tool (DART) is a novel modularized, non-copywritten, semi-structured interview; however, no studies have examined the psychometric properties of its alcohol use disorder (AUD) module. The primary aims of this study were to: (i) validate the factor structure of the DART AUD module and (ii) examine measurement invariance across several key demographic and subgroup factors.

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Purpose: Patient-reported outcomes are important as obesity is a chronic disease with a substantial impact. A multidisciplinary task force selected six scales (48 questions) from the validated BODY-Q questionnaire. This subset was gradually introduced and evaluated in a mandatory nationwide registry.

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Paediatric critical care units are designed for children at a vulnerable stage of development, yet the evidence base for practice and policy in paediatric critical care remains scarce. In this Health Policy, we present a roadmap providing strategic guidance for international paediatric critical care trials. We convened a multidisciplinary group of 32 paediatric critical care experts from six continents representing paediatric critical care research networks and groups.

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Abstract: Despite the increasing utilization of total ankle replacement (TAR) for end-stage ankle arthritis, there remains a paucity of long-term follow-up data comparing arthroplasty to arthrodesis. The aim of the current paper was to provide the long-term clinical outcomes of TAR and ankle arthrodesis (AA), measured with use of validated scoring instruments, in a prospective multicenter cohort of patients with ankle arthritis. This cohort from the Canadian Orthopaedic Foot and Ankle Society (COFAS) Prospective Ankle Reconstruction Database comprised patients who underwent TAR or AA between 2001 and 2007.

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Introduction: Alzheimer's disease (AD) and other tauopathies are characterized by intracellular aggregates of microtubule-associated protein tau that are actively released and promote proteopathic spread. Microglia engulf pathological proteins, but how they endocytose tau is unknown.

Methods: We measured endocytosis of different tau species by microglia after pharmacological modulation of macropinocytosis or clathrin-mediated endocytosis (CME) or antagonism/genetic depletion of known tau receptors heparan-sulfate proteoglycans (HSPGs) and low-density lipoprotein receptor-related protein 1 (LRP1).

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Background: Initiating urate-lowering therapy can trigger gout flares. Gout flares have been associated with a temporally increased risk of cardiovascular events. Therefore, we aimed to estimate the risk of cardiovascular events in patients with gout initiating urate-lowering therapy with flare prophylaxis using colchicine (the drug recommended for gout flare prohphylaxis by many international societies) compared with no prophylaxis.

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Deficits in IL-2 signaling can precipitate autoimmunity by altering the function and survival of FoxP3+ regulatory T cells (Tregs) while high concentrations of IL-2 fuel inflammatory responses. Recently, we showed that the non-beta IL-2 SYNTHORIN molecule SAR444336 (SAR'336) can bypass the induction of autoimmune and inflammatory responses by increasing its reliance on IL-2 receptor α chain subunit (CD25) to provide a bona fide IL-2 signal selectively to Tregs, making it an attractive approach for the control of autoimmunity. In this report, we further demonstrate that SAR'336 can support non-beta IL-2 signaling in murine Tregs and limit NK and CD8+ T cells' proliferation and function.

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Background: Although there is growing evidence of the association between gender and early diagnosis of preclinical Alzheimer's disease, little attention has been given to the enrolment ratio of men and women in clinical trials and data reporting.

Methods: This study aims to analyze gender differences in sociodemographic factors associated with the willingness to participate in clinical trials and undergo specific procedures in the context of an Alzheimer's disease prevention research cohort. 2544 cognitively unimpaired participants from the ALFA parent cohort (age 45-75 years) of the Barcelonaβeta Brain Research Center were contacted through a structured phone call to determine their willingness to participate in Alzheimer's disease clinical trials and undergo trial-related procedures (magnetic resonance imaging, lumbar puncture, positron emission tomography, and cognitive assessment).

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Sinonasal Organized Hematoma.

Radiographics

January 2025

From the Department of Radiology, Brigham and Women's Hospital/Harvard Medical School, 75 Francis St, Boston, MA 02115 (A.J.); Department of Radiology, University of Ottawa/The Ottawa Hospital, Ottawa, Ontario, Canada (A.D.M.G.F., M.L.B.V.); Department of Radiology, Yale New Haven Hospital/Yale University, New Haven, Conn (I.D.d.O.S.); and Department of Radiology, Mayo Clinic, Jacksonville, Fla (A.A.).

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The evolution of academic advisor and resident dyadic coaching relationships: a two-year longitudinal qualitative study.

Adv Health Sci Educ Theory Pract

December 2024

Department of Medicine Canada Research Chair in Health Professions Education and scientist at the Wilson Centre for Education, University of Toronto, Toronto, ON, Canada.

Implementing competency based medical education (CBME) has generated enormous amounts of assessment data. To help residents synthesize and use these data, some programs have appointed academic advisors (AA) to 'coach over time'. This study explored how resident and faculty AA dyads perceived their relationship developing and evolving, and the extent to which it aligned with 'coaching over time'.

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Background: The World Stroke Academy (WSA), the educational platform of the WSO, provides high-quality stroke education to health care professionals worldwide. Understanding the learning needs and preferences of WSA members is crucial for effective knowledge translation. This study aims to (1) assess demographics and professional backgrounds of WSA members, (2) identify preferences in knowledge acquisition, and (3) evaluate audience retention during WSA webinars.

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Background: Covered stent correction for a sinus venosus atrial septal defect (SVASD) was first performed in 2009. This innovative approach was initially viewed as experimental and was reserved for highly selected patients with unusual anatomic variants. In 2016, increasing numbers of procedures began to be performed, and in several centers, it is now offered as a standard of care option alongside surgical repair.

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Background: Although some evidence suggests that alcohol, substance use, and mental health issues diminish adherence to HIV Pre-Exposure Prophylaxis (PrEP) among gay, bisexual, and other men-who-have-sex-with-men (gbMSM), findings are somewhat inconsistent and have primarily derived from studies involving non-random samples. Medical chart extraction can provide unique insight by in part surmounting sampling-related limitations, as data for entire PrEP clinic populations can be examined. Our investigation entailed comprehensive chart extraction to assess the extent to which chart-reported alcohol, substance use, and mental health issues were associated with chart-reported PrEP nonadherence.

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Severe hypophosphataemia and hypocalcaemia following intravenous ferric derisomaltose and denosumab administration.

BMJ Case Rep

December 2024

Division of Endocrinology, Department of Medicine, Jewish General Hospital, McGill University, Montreal, Quebec, Canada.

Serum calcium and phosphorus levels are tightly regulated by the calciotropic hormone parathyroid hormone, fibroblast growth factor 23 and 1,25(OH) vitamin D. Commonly prescribed therapies for iron-deficiency anaemia (IDA) such as ferric carboxymaltose and ferric derisomaltose (FDM) have been shown to disrupt phosphorus homeostasis, resulting in hypophosphataemia. Similarly, denosumab use can result in hypocalcaemia due to the inhibition of osteoclastic maturation, activity and survival.

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Background: CLASSIC-MS explored long-term outcomes of patients treated with cladribine tablets.

Objective: Assess long-term efficacy in patients previously enrolled in ORACLE-MS, a Phase III parent trial.

Methods: ORACLE-MS included patients with a first clinical demyelinating event (FCDE or clinically isolated syndrome) who received ⩾1 course of cladribine tablets or placebo.

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Background: In STREAM-1 (Strategic Reperfusion Early After Myocardial Infarction), excess intracranial hemorrhage occurred in patients aged ≥75 years receiving full-dose tenecteplase as part of a pharmaco-invasive strategy, whereas no further intracranial hemorrhage occurred after halving the tenecteplase dose. In STREAM-2 (Second Strategic Reperfusion Early After Myocardial Infarction), half-dose tenecteplase was an effective and safe pharmaco-invasive strategy in older patients with ST-segment-elevation myocardial infarction presenting within <3 hours, compared with primary percutaneous coronary intervention (PCI). We prespecified evaluating the efficacy and safety of a half-dose versus full-dose pharmaco-invasive strategy and compared the half-dose pharmaco-invasive strategy to primary PCI in patients aged ≥75 years.

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L-arginine: glycine amidinotransferase (AGAT) gained academic interest as the rate-limiting enzyme in creatine biosynthesis and its role in the regulation of creatine homeostasis. Of clinical relevance is the diagnosis of patients with AGAT deficiency but also the potential role of AGAT as therapeutic target for the treatment of another creatine deficiency syndrome, guanidinoacetate N-methyltransferase (GAMT) deficiency. Applying a stable isotope-labeled substrate method, we utilized ARG 15N (ARG-δ2) and GLY 13C15N (GLY-δ3) to determine the rate of 1,2-13C,15N guanidinoacetate (GAA-δ5) formation to assess AGAT activity in various mouse tissue samples and human-derived cells.

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Transfer of chirality, or transmission of asymmetric information from one system to another, plays an essential role in fundamental biological and chemical processes and, therefore, is essential for life. This phenomenon also holds immense potential in spintronics in the context of chirality-induced spin selectivity (CISS). In the CISS, the spatial arrangement of chiral molecules influences the spin state of electrons during the charge-transfer processes.

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Background: Modest weight and lipid changes have been observed in cabotegravir plus rilpivirine long-acting (CAB+RPV LA) Phase 3/3b studies. The SOLAR study included standardized evaluations of weight and metabolic changes in people living with HIV switching to CAB+RPV LA dosed every 2 months (Q2M) vs. continuing bictegravir/emtricitabine/tenofovir (BIC/FTC/TAF).

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Multicenter Validation of the Ocular Myasthenia Gravis Rating Scale Questionnaire.

Neurology

January 2025

From the Department of Neuro-Ophthalmology (S.H.W.), Moorfields Eye Hospital NHS Foundation Trust; Departments of Ophthalmology and Neurology (S.H.W.), Guy's and St Thomas' NHS Foundation Trust; Department of Ophthalmology (S.H.W.), Faculty of Life Sciences & Medicine, King's College London; Department of Clinical and Movement Neuroscience (S.H.W.), UCL Queen Square Institute of Neurology, University College London, United Kingdom; Department of Ophthalmology and Visual Sciences (R.A., W.T.C., T.D., J.R.E., C.A.A., L.B.D.L.), Kellogg Eye Center, University of Michigan, Ann Arbor; Departments of Ophthalmology, Neurology, and Neurosurgery (E.R.E., S.K.), Mayo Clinic, FL; Survey Research Center (J.R.E.), Institute for Social Research, University of Michigan, Ann Arbor; and Division of Neurology (C.B.-T.), Department of Medicine, University Health Network and University of Toronto, Ontario, Canada.

Background And Objectives: Ocular myasthenia gravis (OMG) causes disabling ocular symptoms of ptosis and diplopia, but a validated disease-specific patient-reported outcome measure (PROM) has not been reported. We sought to validate a novel PROM for OMG, OMG Rating Scale Questionnaire (OMGRate-q), as a measure of visual functioning to support patient-centered care.

Methods: This was a prospective study of patients aged 18 years and older with OMG receiving care at 3 medical centers (January 2022-October 2023).

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