955 results match your criteria: " University of Ottawa[Affiliation]"

Article Synopsis
  • The study investigates the safety and pharmacokinetics of oral decitabine combined with cedazuridine versus intravenous decitabine in patients with myelodysplastic syndromes or chronic myelomonocytic leukaemia.
  • It involved a phase 3 multicentre trial with participants randomly assigned to receive either oral or IV treatment in a crossover design, allowing for direct comparison of the two methods.
  • The primary goal was to measure and compare total decitabine exposure over a 5-day period for both formulations to determine the effectiveness of the oral treatment option.
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Article Synopsis
  • The study examines the relationship between new plasma biomarkers and cognitive abilities, decline, and daily living independence in various neurodegenerative diseases.
  • Researchers measured biomarkers like GFAP, NfL, p-tau181, and Aβ in 44 healthy individuals and 480 patients with Alzheimer’s, Parkinson’s, frontotemporal dementia, or cerebrovascular diseases.
  • Results showed that GFAP, NfL, and p-tau181 levels were higher in all disease groups compared to healthy controls and were linked to poorer cognition and independence, with p-tau181 being specifically relevant for Alzheimer’s patients.
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Twisting bilayers of transition metal dichalcogenides gives rise to a moiré potential resulting in flat bands with localized wave functions and enhanced correlation effects. In this work, scanning tunneling microscopy is used to image a WS bilayer twisted approximately 3° off the antiparallel alignment. Scanning tunneling spectroscopy reveals localized states in the vicinity of the valence band onset, which is observed to occur first in regions with S-on-S Bernal stacking.

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Racism can be stressful or even traumatizing. Psychological unwellness emerges out of the confluence of historical, cultural, and individual experiences, and resulting syndromes may or may not fit into a DSM-5 PTSD diagnostic framework. Although racial stress and trauma are common presentations in therapy, few therapists have the resources or training to treat these issues.

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Subclinical Primary Aldosteronism and Cardiovascular Health: A Population-Based Cohort Study.

Circulation

January 2024

Department of Medicine, Division of Nephrology, Hôpital du Sacré-Coeur de Montréal, Université de Montréal, Quebec, Canada (F.M., R.G.).

Background: Primary aldosteronism, characterized by overt renin-independent aldosterone production, is a common but underrecognized form of hypertension and cardiovascular disease. Growing evidence suggests that milder and subclinical forms of primary aldosteronism are highly prevalent, yet their contribution to cardiovascular disease is not well characterized.

Methods: This prospective study included 1284 participants between the ages of 40 and 69 years from the randomly sampled population-based CARTaGENE cohort (Québec, Canada).

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Background: Despite the increasing number of cases of secondary antibody deficiency (SAD) and immunoglobulin (Ig) utilization, there is a paucity of data in the literature on clinical and patient-reported outcomes in this population.

Objective: To describe immunoglobulin utilization patterns, clinical and patient-reported outcomes in patients with SAD on immunoglobulin replacement therapy (IgRT).

Methods: A cross-sectional study of patients with secondary antibody deficiency enrolled in the Ontario Immunoglobulin Treatment (ONIT) Case Registry from June 2020 to September 2022 was completed.

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L-Lysine supplementation affects dietary protein quality and growth and serum amino acid concentrations in rats.

Sci Rep

November 2023

Nutrition Research Division, Food Directorate, Health Products and Food Branch, Health Canada, Banting Research Centre, Ottawa, ON, K1A 0K9, Canada.

Single amino acid (AA) supplementations in foods are increasing, however their potential nutritional and physiological impacts are not fully understood. This study examined the effects of L-lysine (Lys) supplementation on protein quality of diets, serum AA concentrations and associations between the ratio of supplemental Lys to dietary protein (X) with body weight gain (BWG) in Sprague-Dawley male rats. Rats were fed one of 10 diets containing either 7% or 20% casein and supplemented with 0% (Control), 1.

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Transcatheter or Surgical Aortic Valve Replacement in Patients With Severe Aortic Stenosis and Small Aortic Annulus: A Randomized Clinical Trial.

Circulation

February 2024

Cardiology Department, Quebec Heart & Lung Institute, Laval University, Quebec City, Canada (J.R.-C., S.M., J.-M.P., E.D., D.K., C.G., M.A., E.P.-B., P.P.).

Background: The optimal treatment in patients with severe aortic stenosis and small aortic annulus (SAA) remains to be determined. This study aimed to compare the hemodynamic and clinical outcomes between transcatheter aortic valve replacement (TAVR) and surgical aortic valve replacement (SAVR) in patients with a SAA.

Methods: This prospective multicenter international randomized trial was performed in 15 university hospitals.

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Surgical management of digital ulcers in systemic sclerosis: A systematic literature review.

Semin Arthritis Rheum

December 2023

Department of Life, Health & Environmental Sciences, University of L'Aquila and Internal Medicine and Nephrology Unit and Department of Medicine, ASL Avezzano-Sulmona-L'Aquila, San Salvatore Hospital, L'Aquila, Italy.

Background: There is a strong rationale to develop locally-acting surgical treatments for digital ulcers (DUs) in patients with systemic sclerosis (SSc). Our aim was to examine the safety and efficacy of local surgical management for SSc-DU.

Methods: A systematic literature review was carried out until to August 2022 using 7 different databases.

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Background: The AcT (Alteplase Compared to Tenecteplase) randomized controlled trial showed that tenecteplase is noninferior to alteplase in treating patients with acute ischemic stroke within 4.5 hours of symptom onset. The effect of time to treatment on clinical outcomes with alteplase is well known; however, the nature of this relationship is yet to be described with tenecteplase.

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Non-surgical local treatments of digital ulcers in systemic sclerosis: a systematic literature review.

Semin Arthritis Rheum

December 2023

Department of Life, Health & Environmental Sciences, University of L'Aquila and Internal Medicine and Nephrology Unit and Department of Medicine, ASL Avezzano-Sulmona-L'Aquila, San Salvatore Hospital, L'Aquila, Italy.

Article Synopsis
  • Digital ulcers (DUs) in people with systemic sclerosis (SSc) are tough to treat, and doctors usually use medicine as the main treatment.
  • Researchers looked at different studies to see how safe and effective local treatments, like injections, are for DUs.
  • They found treatments like botulin A toxin injections were really effective, while others like Vitamin E gel and creams helped too, but some treatments had side effects.
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Background: Metformin has been suggested to reduce dementia risk; however, most epidemiologic studies have been limited by immortal time bias or confounding due to disease severity.

Objectives: To investigate the association of metformin initiation with incident dementia using strategies that mitigate these important sources of bias.

Methods: Residents of Ontario, Canada ≥66 years newly diagnosed with diabetes from January 1, 2008 to December 31, 2017 entered this retrospective population-based cohort.

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Background And Objectives: Alemtuzumab demonstrated superior efficacy subcutaneous interferon (IFN) beta-1a in participants with relapsing-remitting multiple sclerosis in the 2-year CARE-MS I and II trials. Efficacy was maintained in the 4-year CARE-MS extension, during which alemtuzumab-treated participants ('alemtuzumab-only') could receive additional courses upon disease activity, and IFN-treated participants switched to alemtuzumab ('IFN-alemtuzumab'). Participants who completed the CARE-MS extension could enroll in the open-label TOPAZ study which assessed safety and efficacy for 5-7 years (11-13 years after alemtuzumab/IFN initiation).

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Background: Go Nisha Go™ (GNG), is a mobile game combining behavioural science, human-centric design, game-based learning, and interactive storytelling. The model uses a direct-to-consumer (DTC) approach to deliver information, products, services, interactive learning, and agency-building experiences directly to girls. The game's five episodes focus on issues of menstrual health management, fertility awareness, consent, contraception, and negotiation for delay of marriage and career.

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Background: Emerging data suggest that direct oral anticoagulants may be a suitable choice for anticoagulation for cerebral venous thrombosis (CVT). However, conducting high-quality trials in CVT is challenging as it is a rare disease with low rates of adverse outcomes such as major bleeding and functional dependence. To facilitate the design of future CVT trials, SECRET (Study of Rivaroxaban for Cerebral Venous Thrombosis) assessed (1) the feasibility of recruitment, (2) the safety of rivaroxaban compared with standard-of-care anticoagulation, and (3) patient-centered functional outcomes.

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Genetic studies have shown that the MAP kinase MGV1 and the transcriptional regulator TRI6 regulate many of the same biosynthetic gene clusters (BGCs) in . This study sought to investigate the relationship between and in the regulatory hierarchy. Transgenic strains constitutively expressing and were generated to address both independent and epistatic regulation of BGCs by and .

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Background: Spatial patterns of brain functional connectivity can vary substantially at the individual level. Applying cortical surface-based approaches with individualized rather than group templates may accelerate the discovery of biological markers related to psychiatric disorders. We investigated cortico-subcortical networks from multi-cohort data in people with schizophrenia spectrum disorders (SSDs) and healthy controls (HC) using individualized connectivity profiles.

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Omitting Radiotherapy after Breast-Conserving Surgery in Luminal A Breast Cancer.

N Engl J Med

August 2023

From the Department of Oncology, McMaster University and the Division of Radiation Oncology, Juravinski Cancer Centre at Hamilton Health Sciences, Hamilton, ON (T.J.W., I.S.D., J.R.W.), the Division of Radiation Oncology, Department of Surgery, University of British Columbia and Radiation Therapy Program, BC Cancer Agency, Victoria (S.S.), the Department of Oncology, McMaster University, Hamilton, ON (S. Parpia, G.P., M.N.L.), the Department of Radiation Oncology, University of Toronto, and the Radiation Medicine Program, Princess Margaret Cancer Centre (A.W.F., F.-F.L.), the Department of Pathology, University of Toronto (A.B.), and the Department of Radiation Oncology, University of Toronto and Sunnybrook Odette Cancer Centre (E.R.), Toronto, the Department of Radiation Oncology, University of Ottawa and Ottawa Regional Cancer Centre, Ottawa (L.C.), the Department of Radiation Oncology, University of Toronto and Royal Victoria Regional Health Centre, Barrie, ON (C.S.), the Department of Radiation Oncology, Laurentian University and Radiation Treatment Program, Northeast Cancer Centre, Health Sciences North, Sudbury, ON (J.B.), the Department of Radiation Oncology, Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, QC (S. Provencher), the Department of Radiation Oncology, Centre Hospitalier Universitaire de Québec-Université Laval, Quebec, QC (V.T.), the Department of Laboratory Medicine and Pathobiology, and the Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto (A.M.M.), the Department of Pathology and Laboratory Medicine, University of British Columbia, and the BC Cancer Agency, Vancouver (Z.K.), the Department of Radiation Oncology, University of Manitoba and Cancer Care Manitoba, Winnipeg (M.A.A.), the Department of Radiation Oncology, University of British Columbia and Radiation Therapy Program, BC Cancer Agency, Vancouver (K.D.V.), the Department of Radiation Oncology, McGill University, Montreal (T.H.), and the Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver (T.O.N.) - all in Canada.

Background: Adjuvant radiotherapy is prescribed after breast-conserving surgery to reduce the risk of local recurrence. However, radiotherapy is inconvenient, costly, and associated with both short-term and long-term side effects. Clinicopathologic factors alone are of limited use in the identification of women at low risk for local recurrence in whom radiotherapy can be omitted.

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Error-corrected duplex sequencing enables direct detection and quantification of mutations in human TK6 cells with strong inter-laboratory consistency.

Mutat Res Genet Toxicol Environ Mutagen

July 2023

Environmental Health Science and Research Bureau, Health Canada, Ottawa, ON, Canada; Department of Biology, Carleton University, Ottawa, ON, Canada; Department of Biology, University of Ottawa, Ottawa, ON, Canada. Electronic address:

Error-corrected duplex sequencing (DS) enables direct quantification of low-frequency mutations and offers tremendous potential for chemical mutagenicity assessment. We investigated the utility of DS to quantify induced mutation frequency (MF) and spectrum in human lymphoblastoid TK6 cells exposed to a prototypical DNA alkylating agent, N-ethyl-N-nitrosourea (ENU). Furthermore, we explored appropriate experimental parameters for this application, and assessed inter-laboratory reproducibility.

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Article Synopsis
  • This study analyzed U.S. electronic health record data from 2013 to 2020 to compare the effectiveness and safety of rivaroxaban and apixaban for treating cancer-associated venous thromboembolism (VTE) in patients without a high bleeding risk.
  • The primary outcome was a combination of recurrent VTE or bleeding leading to hospitalization after 3 months, with secondary outcomes assessed at 3 and 6 months.
  • Results showed no significant differences in risk between rivaroxaban and apixaban for these outcomes, suggesting that both anticoagulants are similarly effective and safe, and clinicians should prioritize patient preference when selecting a treatment.
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Longitudinal Gray Matter Trajectories in Pediatric Mild Traumatic Brain Injury.

Neurology

August 2023

From the Department of Psychology (A.L.W.), Georgia State University, Atlanta; Department of Neurology (A.L.W.), University of Utah, Salt Lake City; Departments of Psychology (A.L.W., A.O., K.O.Y.) and Radiology (C.L., B.G.G.), Alberta Children's Hospital Research Institute, Hotchkiss Brain Institute, University of Calgary, Alberta, Canada; Computer Vision Group (A.O.), Sano Centre for Computational Medicine, Kraków 30-054, Poland; Department of Radiology (N.A.), University of Ottawa, Children's Hospital of Eastern Ontario Research Institute; Department of Psychology (M.H.B.), University of Montreal & CHU Sainte-Justine Hospital Research Center, Québec; Department of Biomedical Engineering (C.B.), University of Alberta, Edmonton; Division of Neurology (B.H.B.), Department of Pediatrics, University of British Columbia and BC Children's Hospital Research Institute, Vancouver; University of Alberta and Stollery Children's Hospital (W.C.), Edmonton; Department of Radiology (M.D.), Radio-oncology and Nuclear Medicine, Institute of Biomedical Engineering, University of Montreal; CHU Sainte-Justine Research Center, Québec; Department of Pediatrics (Q.D.), University of British Columbia, BC Children's Hospital Research Institute, Vancouver; CHU Sainte-Justine Research Center (S.D.), Department of Radiology, Radio-oncology and Nuclear Medicine, University of Montreal, Québec; Departments of Pediatrics and Emergency Medicine (S.B.F.), Cumming School of Medicine, University of Calgary, Alberta; Department of Pediatric Emergency Medicine (J.G.); CHU Sainte-Justine, Department of Pediatrics, University of Montréal, Québec; Children's Hospital of Eastern Ontario Research Institute (A.-A.L., R.Z.); Department of Cellular and Molecular Medicine (A.-A.L.) and Pediatrics and Emergency Medicine (R.Z.), University of Ottawa; and Department of Pediatrics and Emergency Medicine (R.Z.), University of Ottawa, Children's Hospital of Eastern Ontario Research Institute, Canada.

Background And Objectives: This prospective, longitudinal cohort study examined trajectories of brain gray matter macrostructure after pediatric mild traumatic brain injury (mTBI).

Methods: Children aged 8-16.99 years with mTBI or mild orthopedic injury (OI) were recruited from 5 pediatric emergency departments.

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