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

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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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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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 the ESCAPE-NA1 trial (Efficacy and Safety of Nerinetide for the Treatment of Acute Ischemic Stroke), treatment with nerinetide was associated with a smaller infarct volume among patients who did not receive intravenous alteplase. We assessed the effect of nerinetide on the surrogate imaging outcome of final infarct volume in patients who did not receive intravenous alteplase and explored predictors of outcome and modifiers of nerinetide's effect on infarct volume.

Methods: ESCAPE-NA1 was a multicenter, randomized trial in which patients with acute stroke with a baseline Alberta Stroke Program Early CT Score >4, undergoing endovascular thrombectomy, were randomized to receive intravenous nerinetide or placebo.

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Unlabelled: The COVID-19 pandemic has emphasized the importance and need for accessible safe, effective, and versatile vaccine platforms. While approved SARS-CoV-2 vaccines have been instrumental in saving lives and reducing healthcare and economic burdens, the induction of mucosal immunity remains an unmet need. Here, we engineered and evaluated a non-replicating adenovirus 5 (rAd5)-based vaccine expressing the SARS-CoV-2 S1 subunit (rAd5-SARS2-S1).

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Multiple signaling pathways have been reported to be altered in Myotonic Dystrophy type 1 (DM1) skeletal muscle, contributing to pathogenicity. In particular, previous work established that AMPK signaling, a key sensor of energy metabolism, is repressed in DM1 mouse muscle and that activating AMPK through exercise and/or with pharmacological activators is beneficial for the DM1 muscle phenotype. Here, we explored the effects of a newer, more specific allosteric AMPK activator acting directly on AMPK.

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Computational Investigation of the Therapeutic Potential of in the Management of Erectile Dysfunction.

Int J Mol Sci

November 2024

Phytomedicine, Biochemical Toxicology and Biotechnology Research Laboratories, Department of Biochemistry, College of Sciences, Afe Babalola University, PMB 5454, Ado-Ekiti 360001, Nigeria.

Erectile dysfunction (ED) is a multifactorial social problem affecting men worldwide. While phosphodiesterase type 5 inhibitors (PDE5) like sildenafil are commonly used, they often present side effects, underscoring the need for alternative therapies. Therefore, this study investigated the potential of phytochemicals from in the management of ED.

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International Comparison of Quality Indicators for Adults Hospitalized for Heart Failure: A Systematic Review.

Circ Cardiovasc Qual Outcomes

November 2024

Divisions of Internal Medicine and Palliative Care, Department of Medicine, Temmy Latner Centre for Palliative Care, Sinai Health, Toronto, Ontario, Canada (G.G.A., A.A., B.S., M.M., J.M.L., S.M., K.L.Q.).

Background: There is limited international agreement on defining care quality for the millions of people hospitalized with heart failure worldwide. Our objective was to compare and measure agreement across existing internationally published quality indicators (QIs) for the care of adults hospitalized for heart failure.

Methods: Systematic review and evidence gap map of internationally published articles reporting on QIs for adults hospitalized for heart failure, using PubMed, MEDLINE, EMBASE, and TRIP from inception to July 18, 2022.

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Catheter Ablation or Antiarrhythmic Drugs for Ventricular Tachycardia.

N Engl J Med

November 2024

From the QEII Health Sciences Centre, Dalhousie University, Halifax, NS (J.L.S., R.P., A.A.), Western University, London, ON (A.S.L.T., L.J.G.), the Population Health Research Institute (J.S.H.) and Hamilton Health Sciences Centre (G.A.), Hamilton, ON, the University of Ottawa Heart Institute (G.M.N., P.B.N.), the McGill University Health Centre (V.E.), the Montreal Heart Institute (L.R., K.D.), and Centre Hospitalier de l'Universitaire de Montreal (J.-M.R.), Montreal, Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, QC (J.-F.R.), Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec (J.-F.S., I.N.), the University of British Columbia, Vancouver (M.D.), Kelowna General Hospital, Kelowna, BC (C.L.), the University of Ottawa, Ottawa (G.A.W.), and the University of Calgary, Calgary, AB (V.K., S.W.) - all in Canada; Vanderbilt University Medical Center, Nashville (W.G.S., A.K.); Centre Hospitalier Universitaire de Bordeaux, L'institut des Maladies du Rythme Cardiaque, Bordeaux (F.S.), and Centre Hospitalier Universitaire de Nancy, Nancy (C.C.) - both in France; and St. Mary's General Hospital, Passaic, NJ (U.J.).

Background: Patients with ventricular tachycardia and ischemic cardiomyopathy are at high risk for adverse outcomes. Catheter ablation is commonly used when antiarrhythmic drugs do not suppress ventricular tachycardia. Whether catheter ablation is more effective than antiarrhythmic drugs as a first-line therapy in patients with ventricular tachycardia is uncertain.

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Article Synopsis
  • The study investigates how the cricket species Gryllus pennsylvanicus can distinguish between two different compound visual motifs using an operant conditioning method.
  • It employs a Y-maze setup where the crickets are exposed to colored visual cues linked to a water reward.
  • Findings indicate that the crickets successfully learned to differentiate the visual patterns and associated them with the reward, demonstrating their ability to recognize visuo-spatial regularities.
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Clinical Tools to Assess Functional Capacity During Risk Assessment Before Elective Noncardiac Surgery : A Scoping Review.

Ann Intern Med

November 2024

Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto; Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto; Department of Anesthesia, St. Michael's Hospital, Unity Health Toronto, Toronto; and Department of Anesthesiology and Pain Medicine, University of Toronto, Toronto, Ontario, Canada (D.N.W.).

Background: Functional capacity is critical to preoperative risk assessment, yet guidance on its measurement in clinical practice remains lacking.

Purpose: To identify functional capacity assessment tools studied before surgery and characterize the extent of evidence regarding performance, including in populations where assessment is confounded by noncardiopulmonary reasons.

Data Sources: MEDLINE, EMBASE, and EBM Reviews (until July 2024).

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Consent-Related Outcomes in the Alteplase Compared to Tenecteplase Trial.

Neurology

November 2024

From the Department of Medicine (M.C.S., D.D.), University of Ottawa, Ontario; The Ottawa Hospital (M.C.S., D.D.), Ontario; Ottawa Hospital Research Institute (M.C.S., B.D., D.D.), Ontario; Centre Hospitalier de L'Université de Montréal (Y.D., L.C.G.), Quebec; Department of Neurology (N.S.), University of Manitoba, Winnipeg; Department of Clinical Neurosciences (C.K., M.A.A., A.A., K.D.S., B.K.M., T.T.S.), University of Calgary, Alberta; Department of Neurology (B.H.B.), University of Alberta, Edmonton; McMaster University (L.C.), Hamilton, Ontario; Kelowna General Hospital (A.T.), British Columbia; and Sunnybrook Health Sciences Centre (R.H.S.), Toronto, Ontario, Canada.

Background And Objectives: In recent years, researchers have sought to address the challenges of obtaining informed consent for participation in acute stroke trials. We studied outcomes related to the use of deferral of consent in the phase 3 Alteplase Compared to Tenecteplase (AcT) trial.

Methods: As part of our protocol, we captured methods of consent, participant withdrawals, door-to-randomization times, and door-to-needle times.

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Plastics are ubiquitous in our ecosystems, and microplastic accumulation in the environment is an emerging global health concern. Since available recycling technologies are not economically competitive with primary plastic production, global use is expected to reach 1231 megatons by 2060, with 493 megatons leeching into the environment each year. To identify new nylon-recycling biotechnologies, targeted genome mining was used to identify thermostable enzymes capable of degrading polyamides.

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Article Synopsis
  • Current antidepressants show limited effectiveness, prompting research to identify biological targets for new treatments and understand their mechanisms.
  • The study utilized EEG data from two Canadian trials to examine how changes in brain wave patterns (neural oscillations) correlate with symptom improvement in patients undergoing pharmacological and CBT treatments.
  • Findings indicate that early increases in theta waves and late changes in delta and alpha waves are linked to better treatment outcomes, with common patterns observed in both treatment methods, enhancing our understanding of how depression treatments work.
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Single- Versus Triple-Agent Intra-Arterial Chemotherapy for Retinoblastoma.

Am J Ophthalmol

January 2025

From the Department of Ophthalmology and Vision Sciences, The Hospital for Sick Children (N.O.A., K.C., A.M., B.L.G., S.N.K.), Toronto, Canada; Department of Ophthalmology and Vision Sciences, University of Toronto (N.O.A., A.M., B.L.G., S.N.K.), Toronto, Canada. Electronic address:

Article Synopsis
  • The study aimed to compare outcomes of single-agent (melphalan) versus triple-agent (melphalan, topotecan, carboplatin) intra-arterial chemotherapy for retinoblastoma (RB) in children, focusing on eye salvage.
  • Researchers reviewed cases of 37 children under 18 who underwent intra-arterial chemotherapy from 2016 to 2024, analyzing complications, tumor responses, and survival rates.
  • Results showed that the triple-agent therapy had a higher rate of partial or complete tumor response (91% vs. 62%), but ocular complications were similar between both groups (31% single-agent vs. 52% triple-agent).
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NAD depletion is central to placental dysfunction in an inflammatory subclass of preeclampsia.

Life Sci Alliance

December 2024

Interdisciplinary School of Health Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, Canada

Article Synopsis
  • Preeclampsia (PE) is a serious pregnancy-related condition linked to high blood pressure and poor health outcomes, with no effective treatments currently available.
  • Researchers found that specific subclasses of PE, particularly those marked by high levels of inflammation, have decreased levels of NAD, a crucial molecule for energy and cellular function.
  • Boosting NAD levels with nicotinamide riboside (NR) showed promise in preventing complications of inflammation-driven PE in both lab studies and an animal model, suggesting it could be a potential preventative strategy for this condition.
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Article Synopsis
  • * Recently, there have been great breakthroughs for MS, with new medications being approved, but people with PD still have not gotten new treatments and only have old ones that don't work as well.
  • * Experts from around the world gathered in Toronto to discuss how to improve treatment for PD by learning from what worked for MS, focusing on things like better clinical trials and understanding the diseases better.
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Article Synopsis
  • - Both oestrogen and progesterone play a role in delaying the onset of the fertile window during the first week of the menstrual cycle by affecting cervical mucus secretion.
  • - In an observational study of 88 women, findings showed that low oestrogen and high progesterone levels negatively influenced mucus secretion, thereby delaying fertility signs.
  • - The study highlighted that increased oestrogen concentrations significantly raised the chances of entering the fertile window, while higher levels of progesterone were associated with decreased fertility odds.
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Background: The rate of vitamin D deficiency (VDD) in critically ill children worldwide has been estimated at 50%. These children are at risk of multiple organ dysfunction, chronic morbidity, and decreased health related quality of life (HRQL). Pediatric and adult ICU clinical trials suggest that VDD is associated with worse clinical outcomes, although data from supplementation trials are limited and inconclusive.

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Background And Aims: The optimal antithrombotic therapy in patients with device-detected atrial fibrillation (DDAF) is unknown. Concomitant vascular disease can modify the benefits and risks of anticoagulation.

Methods: These pre-specified analyses of the NOAH-AFNET 6 (n = 2534 patients) and ARTESiA (n = 4012 patients) trials compared anticoagulation with no anticoagulation in patients with DDAF with or without vascular disease, defined as prior stroke/transient ischaemic attack, coronary or peripheral artery disease.

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Concerns exist regarding increased toxicities, including endocrine therapy toxicity, with concurrent radiation and endocrine therapy in early breast cancer (EBC). We present a pragmatic, randomized trial comparing concurrent versus sequential endocrine and radiotherapy in hormone-responsive EBC. In this multicenter trial, patients were randomized to receive adjuvant endocrine therapy concurrent with, or sequential to, radiotherapy.

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Article Synopsis
  • In patients with X-linked hypophosphatemia (XLH), traditional treatments can lead to nephrocalcinosis, but the connections between XLH, its treatment, and kidney function are still unclear.
  • A study analyzed kidney health in 196 children and 318 adults with XLH, with findings showing a significant prevalence of nephrocalcinosis, especially in children, and its association with reduced kidney function.
  • Results indicated that nephrocalcinosis was common in both age groups, with children showing more symptoms related to kidney function compared to adults, highlighting the need for deeper understanding and monitoring of kidney health in XLH patients.*
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Hepatic Sinusoidal Disorders.

Radiographics

September 2024

From the Department of Radiology, Abdominal Imaging Division, Mayo Clinic, 200 First St SW, Rochester, MN 55905 (S.K.V., K.C.H., S.M.T., S.H., P.J.N., C.N.G., C.L.W.); Department of Medical Imaging, University of Ottawa, Ottawa, Ontario, Canada (K.C.H.); Department of Abdominal Imaging, Northwestern Memorial Hospital, Chicago, Ill (A.A.B.); Department of Abdominal Imaging, University of Pittsburgh, Pittsburgh, Pa (A.F., F.H.M.); Department of Anatomic Pathology, Mayo Clinic, Rochester, Minn (E.Z.M.C., M.S.T.); and Department of Radiology, Hacettepe University, Ankara, Turkey (I.S.I.).

Hepatic sinusoids are highly specialized microcirculatory conduits within the hepatic lobules that facilitate liver functions. The sinusoids can be affected by various disorders, including sinusoidal dilatation, sinusoidal obstruction syndrome (SOS), sinusoidal cellular infiltration, perisinusoidal infiltration, and endothelial neoplasms, such as hemangioendothelioma and angiosarcoma. While these disorders, particularly SOS and neoplasms, can be life threatening, their clinical manifestation is often nonspecific.

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Assessment of Thrombectomy versus Combined Thrombolysis and Thrombectomy in Patients with Acute Ischemic Stroke and Medium Vessel Occlusion.

Radiology

August 2024

From the Neuroendovascular Program, Massachusetts General Hospital & Brigham and Women's Hospital, Harvard University, Boston, Mass (A.A.D., R.W.R., C.J.S., J.D.R., A.B.P.); Departments of Medical Imaging and Neurosurgery, Neurovascular Centre, St. Michael's Hospital, Toronto, ON, Canada M5B 1W8 (A.A.D., N.M.C., T.R.M., V.M.P.); Departments of Neurologic Surgery & Radiology, Mayo Clinic, Rochester, Minn (S.G., H.K., R.K.); Cooper Neurologic Institute, Cooper University Hospital, Cooper Medical School of Rowen University, Camden, NJ (J.E.S., H.S., J.K., A.J.T., A.G.); Departments of Radiology & Neurology, Boston Medical Center, Boston, Mass (M.A., P. Klein, T.N.N.); Department of Interventional Neuroradiology, Stanford Medical Center, Palo Alto, Calif (J.J.H.); Department of Neurosurgery, Thomas Jefferson University, Philadelphia, Pa (K.E.N., A.A., S.I.T., P.J.); Department of Neurosurgery and Interventional Neuroradiology, Louisiana State University, Shreveport, La (H.A.S., B.M., N.A., H.H.C.S.); Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany (L.M., J.F. T.D.F.); Department of Neurology, Hôpital Civil Marie Curie, Charleroi, Belgium (A.D., F.B.); Department of Neuroradiology, University Hospital of Limoges, Université de Limoges, Limoges, France (G.F., A.R., S. Saleme, C.M.); Department of Radiology, Division of Neurointerventional Radiology, University of Massachusetts Medical Center, Worcester, Mass (A.L.K., A.S.P.); Department of Neuroradiology, Sana Kliniken, Lübeck GmbH, Lübeck, Germany (C.D.); Department of Neurosurgery, University of Texas Medical Branch, Galveston, Tex (P.T.K., M.C.); Department of Interventional Neuroradiology, Bordeaux University Hospital, Bordeaux, France (G.M., J.B., X.B.); Department of Neurology, Bordeaux University Hospital, Bordeaux, France (I.S.); Department of Neurology, University of Massachusetts Chan Medical School, Worcester, Mass (S.N., N.H.); Department of Psychiatry, University of Massachusetts Chan Medical School, Worcester, Mass (N.H.); Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Mass (N.H.); Department of Neurosurgery, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan (T.O., S.D.); Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.L.L.Y., B.Y.Q.T.); Department of Medicine, Division of Neurology, National University Hospital, Singapore (B.Y.Q.T.); Department of Neurology, UTHealth McGovern Medical School, Houston, Tex (J.C.M.G., S.S.M.); Interventistica Neurovascolare, Ospedale Careggi di Firenze, Florence, Italy (S. Sheth, L.R., C.C.); Department of Neurologic Surgery, Division of Stroke and Endovascular Neurosurgery, Keck School of Medicine, University of Southern California, Los Angeles, Calif (A.M.); Department of Endovascular Neurosurgery and Neuroradiology, Rutgers University New Jersey Medical School in Newark, Newark, NJ (P. Khandelwal); Department of Neurosurgery, Westchester Medical Center at New York Medical College, Valhalla, NY (A.B.); Department of Neuroradiology, Pitié-Salpêtrière Hospital, GRC BioFast, Sorbonne University, Paris, France (F.C., M.E., K.P.); Neurology Department, Faculty of Medicine, Tanta University, Egypt (M.E.); UOSA Neuroradiologia Interventistica, Fondazione Policlinico Universitario A.Gemelli IRCCS, Rome, Italy (I.V., A.P., A.M.A.); Department of Diagnostic and Interventional Neuroradiology, Centro Hospitalar Universitário do Porto, Porto, Portugal (J.P.F.); Department of Neurology, Centro Hospitalar Universitário do Porto, Porto, Portugal (R.V.); Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, Calif (M.Q.C., N.R.G.); Department of Vascular and Interventional Neuroradiology, Universitätsklinikum Heidelberg, Heidelberg, Germany (M.A.M., J.J., C.W.); Department of Neuroradiology, Gui de Chauliac Hospital, Montpellier University Medical Center, Montpellier, France (V.C., R.A.R.); Department of Neurology, Gui de Chauliac Hospital, Montpellier University Medical Center, Montpellier, France (A.t.S.); Department of Radiology, Division of Neuroradiology, Johns Hopkins Medical Center, Baltimore, Md (V.Y.); Department of Neurology, University of Cincinnati Medical Center, Cincinnati, Ohio (P.H., L.M.C., Y.A.); Department of Interventional Neuroradiology, Nancy University Hospital, Nancy, France (B.G.); INSERM U1254, IADI, Université de Lorraine, Nancy, France (B.G.); Department of Radiology, Section of Interventional Neuroradiology, University Medical Center Münster, Münster, Germany (C.P.S.); Departments of Neurology & Neurosurgery, Christian Doppler Clinic, Paracelsus Medical University, Salzburg, Austria (C.H., M.K.O., C.J.G.); Department of Neurology, Sin-Lau Hospital, Tainan, Taiwan (C.Y.H.); UCLA Stroke Center and Department of Neurology Department, University of California Los Angeles, Los Angeles, Calif (D.S.L.); Department of Medicine, Division of Neurology, The Ottawa Hospital, Ottawa Hospital Research Institute and University of Ottawa, Ottawa, Ontario, Canada (I.T., R.F.); Department of Diagnostic and Interventional Neuroradiology, Erasme University Hospital, Brussels, Belgium (B.L.).

Article Synopsis
  • * Data from 670 patients revealed that while IVT may improve some outcomes, such as higher chances of achieving a modified Rankin Scale score of 0-2 in univariable analysis, this benefit was not consistently observed in more rigorous multivariable analyses.
  • * Overall, the findings suggest that adjunctive IVT may not significantly enhance clinical outcomes or safety compared to MT alone for this patient population.
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