27,441 results match your criteria: " Canada; Sainte-Justine University Hospital Azrieli Research Center[Affiliation]"

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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Association between genomic instability score and progression-free/overall survival in patients with newly diagnosed non-BRCA1/2 ovarian cancer.

Gynecol Oncol

December 2024

Gynecologic Medical Oncology Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Department of Medicine, Weill Cornell Medical College, New York, NY, USA. Electronic address:

Objective: We sought to describe the association between genomic instability score (GIS) and progression-free survival (PFS) and overall survival (OS) in patients with newly diagnosed, non-BRCA1/2 ovarian cancer.

Methods: Homologous recombinant deficiency (HRD) status was based on a cutoff of ≥42 GIS; patients <42 were categorized with homologous recombination proficiency (HRP). We collected type and duration of maintenance therapy, among other variables, and built a multivariate model with landmark analysis at 6 months from baseline and applied it for time-dependent variables.

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Targeting socioeconomic inequity to reduce liver disease related to alcohol use.

Lancet Gastroenterol Hepatol

February 2025

Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, ON M5T 1R8, Canada; Center for Interdisciplinary Addiction Research, Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.

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Article Synopsis
  • KEOPS is a crucial enzyme complex that modifies tRNAs, specifically adding a N-threonylcarbamoyl adenosine (tA) modification essential for protein synthesis in eukaryotes and archaea.
  • Mutations in any of the KEOPS subunits can cause Galloway Mowat Syndrome (GAMOS) in humans, highlighting the complex's significance in cellular function.
  • Recent cryogenic electron microscopy studies revealed how KEOPS interacts with tRNA, showing that its structure changes during modification and emphasizing the roles of all subunits, especially Bud32, in regulating tRNA modification.
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Authentic assessments (AA) include three principles, realism, cognitive challenge, and evaluative judgment, and replicate professional workplace expectations. Developing AA in undergraduate life science education is necessary to promote critical skill development and adequately prepare students for the workplace. Using a 'Students-as-Partners' (SAP) approach, five students, an educational developer and the instructor codeveloped an AA requiring students to utilize scientific literacy (SL) and critical thinking (CT) skills to develop a data extraction table and generate communication outputs for scientific and nonscientific audiences.

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Article Synopsis
  • The study aimed to compare stroke prevention strategies, management of comorbidities, and clinical outcomes in patients with atrial fibrillation (AF) across different healthcare specialties: cardiology, primary care, and others.
  • Among 52,011 patients, those in cardiology were more likely to receive non-vitamin K oral anticoagulants (NOACs) compared to those in primary care or other specialties, while comorbidity management was similar across all groups.
  • Patients receiving care outside of cardiology faced higher risks for non-cardiovascular mortality, major bleeding, and worsening heart failure, indicating a need for improved AF management in these settings.
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Objective: To describe the use of nuclear medicine cerebral perfusion studies as an ancillary test for brain death/death by neurologic criteria (BD/DNC) in infants aged under 1 year.

Design: Retrospective case series.

Setting: Single-center, quaternary, academic children's hospital in the United States.

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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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Article Synopsis
  • - Innovative Cellular Medicine (ICM) is a rapidly developing field aimed at tackling serious diseases like cancer, Alzheimer's, and MS by exploring cellular responses at the single-cell level, with contributions from nanotechnology and bio-mechatronics.
  • - The authors emphasize the need for interdisciplinary collaboration to improve cancer detection and treatment, highlighting the creation of two advanced biomechatronic platforms designed to analyze melanoma cells through various cellular properties.
  • - Key innovations in this study include a new mathematical model for calculating cellular contractile force, an expression for cell-membrane potential, and the fabrication of unique nano-scale platforms that enhance our understanding of cellular behavior in cancer research.
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In humans, misprocessed mRNAs containing intact 5' Splice Site (5'SS) motifs are nuclear retained and targeted for decay by ZFC3H1, a component of the Poly(A) Exosome Targeting complex, and U1-70K, a component of the U1 snRNP. In , the ZFC3H1 homolog, Red1, binds to the YTH domain-containing protein Mmi1 and targets certain RNA transcripts to nuclear foci for nuclear retention and decay. Here we show that YTHDC1 and YTHDC2, two YTH domain-containing proteins that bind to -6-methyladenosine (m6A) modified RNAs, interact with ZFC3H1 and U1-70K, and are required for the nuclear retention of mRNAs with intact 5'SS motifs.

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LI-RADS US Surveillance Version 2024 for Surveillance of Hepatocellular Carcinoma: An Update to the American College of Radiology US LI-RADS.

Radiology

December 2024

From the Department of Radiology, Stanford University, 300 Pasteur Dr, Palo Alto, CA 94304 (A. Kamaya, J.R.T.); The University of Texas Southwestern Medical Center, Dallas, Tex (D.T.F.); Department of Radiology, Royal Perth Hospital, Perth, Western Australia, Australia (J.H.S.); Department of Radiology, University of Calgary, Calgary, Alberta, Canada (D.P.B.); Department of Radiology and Biomedical Imaging, University of California at San Francisco, San Francisco, Calif (H.H.C., C.W.H.); Department of Radiology, University of Kentucky, Lexington, Ky (A.A.D.); MIC Medical Imaging, Edmonton, Alberta, Canada (C.F.); Department of Radiology, Northwestern University, Chicago, Ill (H.G.); Department of Radiology, University of California at San Diego, UC San Diego Medical Center, San Diego, Calif (A. Khurana); Liver Imaging Group, Department of Radiology, UC San Diego, San Diego, Calif (C.B.S.); Penn State Health Milton S. Hershey Medical Center, Hershey, Pa (K.L.M.); Department of Radiology, Mayo Clinic Arizona, Phoenix, Ariz (T.A.M.); and Department of Radiology, Thomas Jefferson University, Cherry Hill, NJ (S.K.R.).

In 2017, the American College of Radiology introduced the US Liver Imaging Reporting and Data System (LI-RADS) as a framework for US surveillance of patients at risk for developing hepatocellular carcinoma. This has aided in the standardization of technique, clinical reporting, patient management, data collection, and research. Emerging evidence has helped inform changes to the algorithm, now released as LI-RADS US Surveillance version 2024.

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Oxidative Deformylation of the Predominant DNA Lesion 5-Formyl-2'-deoxyuridine.

Chem Res Toxicol

December 2024

Department of Medical Imaging and Radiation Sciences, Faculty of Medicine and Health Sciences, Université de Sherbrooke, 3001, 12e Avenue Nord, Sherbrooke, Québec J1H 5N4, Canada.

Radical oxidation of DNA gives rise to potentially deleterious lesions such as strand breaks and various nucleobase modifications including 5-formyl-2'-deoxyuridine (5-fo-dU), a prevalent product derived from the oxidation of the C5-methyl group of thymidine. The present study investigates the unusual transformation of 5-fo-dU into 5-hydroxy-2'-deoxyuridine (5-oh-dU) and 5,6-dihydroxy-5,6-dihydro-2'-deoxuridine (gly-dU), two products typically associated with the oxidation of 2'-deoxycytidine. Detailed mechanistic analyses reveal that hydrogen peroxide, either generated as a byproduct of ascorbate autoxidation or added exogenously, mediates the formation of these oxidatively induced C5-dealkylated products.

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Safety and Efficacy of Posterior Chamber Phakic Implantable Collamer Lenses in Patients with Keratoconus: A Systematic Review and Meta-Analysis.

Am J Ophthalmol

November 2024

Department of Ophthalmology and Visual Sciences (M.H.K., S.N., T.H.A.L., and S.J.), McGill University, Montréal, QC, Canada; Département de Ophtalmologie (A.S.P. and S.J.), Centre Hospitalier de l'Université de Montréal, Montréal, QC, Canada. Electronic address:

Article Synopsis
  • The study aimed to evaluate the safety and effectiveness of implantable collamer lenses (ICLs) for patients with keratoconus through a systematic review and meta-analysis of existing research.
  • A total of 16 observational studies involving 397 eyes were analyzed, showing significant improvements in uncorrected distance visual acuity (UDVA) and various refractive measures, but no substantial changes in corrected distance visual acuity (CDVA).
  • Overall, the findings suggest that ICLs are safe and beneficial for vision correction in keratoconus patients, though limitations such as study design and follow-up duration were noted.
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A complication of type 1 diabetes mellitus (T1DM) is diabetic myopathy that includes reduced regenerative capacity of skeletal muscle. Sphingolipids are a diverse family of lipids with roles in skeletal muscle regeneration. Some studies have found changes in sphingolipid species levels in T1DM, however, the effect of T1DM on a sphingolipid panel in regenerating skeletal muscle has not been examined.

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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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Neuroimaging Insights into Brain Mechanisms of Early-onset Restrictive Eating Disorders.

medRxiv

November 2024

Institut Pasteur, Université de Paris, CNRS UMR 3571, Human Genetics and Cognitive Functions, 25 rue du Dr. Roux, Paris, France.

Article Synopsis
  • Early-onset restrictive eating disorders (rEO-ED), including early-onset anorexia nervosa (EO-AN) and avoidant restrictive food intake disorders (ARFID), have unknown impacts on brain development.
  • A study comparing brain features through MRI in children under 13 with EO-AN, ARFID, and typically developing peers revealed differing brain structures despite similar BMI, indicating unique brain mechanisms for each disorder.
  • Findings suggest EO-AN is linked to thinner cortex structures, while ARFID patients showed reduced surface area and subcortical volume, highlighting the need for further research on the relationship between low BMI and neurodevelopmental impacts in eating disorders.
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Autoimmune hepatitis: Towards a personalized treatment.

World J Hepatol

November 2024

Department of Pediatrics, CHU Sainte-Justine, Montreal H3T 1C5, Quebec, Canada.

Autoimmune hepatitis is an uncommon condition that affects both adults and children and is characterized by chronic and recurrent inflammatory activity in the liver. This inflammation is accompanied by elevated IgG and autoantibody levels. Historically, treatment consists of steroids with the addition of azathioprine, which results in remission in approximately 80% of patients.

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Serological Markers as Predictors of Anti-TNF Response in Children with Crohn's Disease.

Dig Dis Sci

November 2024

Juliet Keidan Institute of Pediatric Gastroenterology Hepatology and Nutrition, Shaare Zedek Medical Center, The Hebrew University of Jerusalem, Eisenberg R&D Authority, P.O. Box 3235, 9103102, Jerusalem, Israel.

Background: To advance personalized medicine in pediatric Crohn's disease (CD), we aimed to explore the utility of serological biomarkers in predicting response to anti-tumor necrosis factor (TNF).

Methods: Children with CD were enrolled at initiation of anti-TNF and followed prospectively at 4 and 12 months thereafter, as well as at last follow-up. At baseline, 10 serological markers of the "PROMETHEUS® IBD sgi Diagnostic test" were measured, including pANCA, ASCA IgG and IgA, anti-CBir1, anti-OmpC, anti-A4-Fla2, anti-Fla-X, SAA, ICAM-1 and VCAM-1.

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The sinoatrial node regulates the heart rate throughout life. Failure of this primary pacemaker results in life-threatening, slow heart rhythm. Despite its critical function, the cellular and molecular composition of the human sinoatrial node is not resolved.

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Objectives: To investigate the effect of a) a brief video intervention and b) end-of-life (EOL) conversations with relatives on EOL communication expectations.

Methods: 272 participants from the general population were randomly assigned to three different video conditions (Intervention group: Persons reporting positive EOL conversation experiences +imagination task, Control group 1: Video unrelated to EOL topics, Control group 2: Persons reporting different attitudes toward EOL conversations +imagination task). Primary outcome was negative expectations.

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Background: Clinical decision support systems (CDSSs) are designed to assist in health care delivery by supporting medical practice with clinical knowledge, patient information, and other relevant types of health information. CDSSs are integral parts of health care technologies assisting in disease management, including diagnosis, treatment, and monitoring. While electronic medical records (EMRs) serve as data repositories, CDSSs are used to assist clinicians in providing personalized, context-specific recommendations derived by comparing individual patient data to evidence-based guidelines.

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Adult Phenotype of -Associated Disorders.

Neurol Genet

December 2024

From the Institute of Medical Science (M.R.), University of Toronto; Adult Genetic Epilepsy (AGE) Program (M.R., Q.Z.A., F.Q., I.C., A.A., D.M.A.), Krembil Neurosciences Institute, Toronto Western Hospital, University Health Network, Canada; Epilepsy Unit (A.A.-S.), Vithas Clinical Neuroscience Institute, Vithas Madrid University Hospitals; Faculty of Experimental Sciences (A.A.-S.), Francisco de Vitoria University, Madrid, Spain; Department of Drug Design and Pharmacology (A.B.), University of Copenhagen; Department for Genetics and Personalized Medicine (A.B.), Danish Epilepsy Centre, Dianalund; Institute for Regional Health Services (A.B.), University of Southern Denmark, Odense; NYU Langone Epilepsy Center (O.D., F.Q., A.A.); Edmond J. Safra Program in Parkinson's Disease (A.F.), Morton and Gloria Shulman Movement Disorders Clinic, Toronto Western Hospital, UHN; Division of Neurology (A.F., D.M.A.), Department of Medicine, University of Toronto; Krembil Brain Institute (A.F., D.M.A.); Clinical Genetics Research Program (A.S.B.), Centre for Addiction and Mental Health; The Dalglish Family 22q Clinic (A.S.B.), Toronto General Hospital, University Health Network; Department of Psychiatry (A.S.B.), University of Toronto, Ontario; Toronto Congenital Cardiac Centre for Adults (A.S.B.), Division of Cardiology, Department of Medicine, and Department of Psychiatry, University Health Network and Toronto General Hospital Research Institute and Campbell Family Mental Health Research Institute (A.S.B.), Toronto, Ontario, Canada.

Background And Objectives: Pathogenic variants are associated with neurodevelopmental disorders and developmental and epileptic encephalopathy. While pediatric phenotypes have been readily explored, adult phenotypes are not well understood. We aimed to investigate the phenotypic spectrum of adult patients with variants.

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Movement Behaviors and Bone Biomarkers in Young Pediatric Cancer Survivors: A Cross-Sectional Analysis of the iBoneFIT Project.

Nutrients

November 2024

Department of Physical Education and Sports, Faculty of Sport Sciences, Sport and Health University Research Institute (iMUDS), University of Granada, 18071 Granada, Spain.

Background/objectives: This study aims to investigate the association of movement behaviors with irisin, sclerostin, and bone turnover markers in young pediatric cancer survivors.

Methods: A total of 116 young pediatric cancer survivors (12.1 ± 3.

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Pradofloxacin is a dual targeting, bactericidal fluoroquinolone recently approved for treating bacteria causing swine respiratory disease. Currently, an abundance of in vitro data does not exist for pradofloxacin. We determined the minimum inhibitory concentration (MIC) and mutant prevention concentrations (MPC) of pradofloxacin compared to ceftiofur, enrofloxacin, florfenicol, marbofloxacin, tildipirosin, tilmicosin and tulathromycin against swine isolates of and .

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Chronic wounds are often caused or exacerbated by microbial biofilms that are highly resistant to antimicrobial treatments and that prevent healing. This study compared the antimicrobial and antibiofilm activity of nine topical wound treatments, comprising gels with different concentrations of poloxamer 407 (20-26%) and different pH levels (4-6) and containing polyhexanide (PHMB) as an antimicrobial agent; the effects of pH on wound gels containing this agent have not been previously reported. The wound gel formulations were tested against six common wound-associated microbial pathogens: , , , , , and .

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