27,441 results match your criteria: " Canada; Montreal Heart Institute[Affiliation]"

Cobalt oxide-based in-plane microsupercapacitors (IPMSCs) stand out as a favorable choice for various applications in energy sources for the Internet of Things (IoT) and other microelectronic devices due to their abundant natural resources and high theoretical specific capacitance. However, the low electronic conductivity of cobalt oxide greatly hinders its further application in energy storage devices. Herein, a new manufacturing method of electric discharging machining (EDM), which is simple, safe, efficient, and environment-friendly, has been developed for synthesizing Mo-doped and oxygen-vacancy-enriched Co-CoO (Mo@Co-CoO) integrated microelectrodes for efficiently constructing Mo@Co-CoO IPMSCs with customized structures in a single step for the first time.

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Nucleotide and Amino Acid Analyses of Unique Infectious Bronchitis Virus (IBV) Variants from Canadian Poultry Flocks with Drop in Egg Production.

Genes (Basel)

November 2024

Faculty of Veterinary Medicine, University of Calgary, Health Research Innovation Center 2C53, 3330 Hospital Drive, NW, Calgary, AB T2N 4N1, Canada.

Background/objectives: Infectious bronchitis (IB) is a highly infectious avian disease caused by the infectious bronchitis virus (IBV). The disease causes lesions mainly in the respiratory, reproductive, and renal systems and has a significant economic impact on the poultry industry worldwide.

Methods: We discovered two unique IBV isolates (T-62: PP737794.

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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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The mRNA N-Methyladenosine Response to Dehydration in .

Animals (Basel)

November 2024

Department of Biology, Carleton University, Ottawa, ON K1S 5B6, Canada.

The African clawed frog, , exhibits remarkable adaptations to survive in its arid habitat, including behavioral and metabolic changes during periods of drought. During extreme dehydration, undergoes estivation, a state characterized by increased urea and ammonia levels, depression of the metabolic rate, and tissue hypoxia. To understand the molecular mechanisms underlying these adaptations, we investigated the potential role of N6-methyladenosine (mA), a widespread mRNA modification, in during extreme dehydration.

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The accurate staging of breast cancer is fundamental for guiding treatment decisions and predicting patient outcomes. However, there can be considerable variation in routine clinical practice based on individual interpretation of guidelines and depending on the healthcare provider initially involved in working up patients newly diagnosed with breast cancer, ranging from primary care providers, triage nurses, surgeons, and/or oncologists. The optimal approach for clinical staging, particularly in asymptomatic patients presenting with intermediate-risk disease, remains a topic of dialogue among clinicians.

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Human epidermal growth factor receptor 2-positive (HER2+) breast cancer is an aggressive subtype of breast cancer associated with a poor prognosis when sub-optimally treated. Recent advances include new and effective targeted therapies that have significantly improved outcomes for patients. Despite these advances, there are significant gaps across Canada, underscoring the need for evidence-based consensus guidance to inform treatment decisions.

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Standard or Extended Lymphadenectomy for Muscle-Invasive Bladder Cancer.

N Engl J Med

October 2024

From Baylor College of Medicine (S.P.L.) and the University of Texas M.D. Anderson Cancer Center (A.M.K.), Houston, the University of Texas Health San Antonio (R.S.S.) and CHRISTUS Santa Rosa Medical Center Hospital (I.M.T.), San Antonio, and the University of Texas Southwestern Medical Center, Dallas (A.I.S.) - all in Texas; Stanford University, Stanford (E.S.), Norris Comprehensive Cancer Center, University of Southern California, Los Angeles (S.D., A.S.), and City of Hope Medical Center, Duarte (S.K.P.) - all in California; SWOG Statistics and Data Management Center and Fred Hutchinson Cancer Center - both in Seattle (C.T., M.P.); the Ohio State University, Columbus (K.S.P.); the University of Chicago, Chicago (N.D.S.); McGill University Health Center, Montreal (W.K.); the Bladder Cancer Advocacy Network, SWOG Advocates, Pittsford, NY (R.B.); Oregon Health and Science University, Portland (T.M.K.); the University of Michigan, Ann Arbor (A.A.); the University of Colorado, Aurora (F.G.L.R.); Brigham and Women's Hospital, Boston (A.S.K.); Fox Chase Cancer Center, Philadelphia (D.J.C.); and Oschsner Medical Center, Jefferson, LA (D.J.C.).

Background: Whether extended lymphadenectomy is associated with improved disease-free and overall survival, as compared with standard lymphadenectomy, among patients with localized muscle-invasive bladder cancer undergoing radical cystectomy is unclear.

Methods: We randomly assigned, in a 1:1 ratio, patients with localized muscle-invasive bladder cancer of clinical stage T2 (confined to muscle) to T4a (invading adjacent organs) with two or fewer positive nodes (N0, N1, or N2) to undergo bilateral standard lymphadenectomy (dissection of lymph nodes on both sides of the pelvis) or extended lymphadenectomy involving removal of common iliac, presciatic, and presacral nodes. Randomization was performed during surgery and stratified according to the receipt and type of neoadjuvant chemotherapy, tumor stage (T2 vs.

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N-acetyl-aspartate (NAA) and myo-inositol (mI) are neurometabolites reflecting neuronal viability and astrocyte activity, respectively. These are quantified using proton magnetic resonance spectroscopy (1H-MRS) and may be biomarkers for Alzheimer's disease dementia (AD). Our objectives were: 1) Compare dorsolateral prefrontal cortex (DLPFC) NAA and mI levels between AD and cognitively healthy control participants (HC) 2) assess if NAA/mI ratio can distinguish groups, and 3) explore the relationship between metabolites and cognition.

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Introduction: Although integrated alcohol policies, characterised by being consistent, structurally connected and interdependent, are considered to be best practices, very few evaluations of such policies exist. We evaluated the impact of two phases of integrated alcohol policies implemented in Lithuania in 2008/2009 and 2017/2018 on adult (15+ years of age) alcohol per capita consumption.

Methods: Alcohol per capita consumption was the main outcome, based on national data from Statistics Lithuania.

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Despite the established use of immune checkpoint inhibitors (ICIs) to treat non-small cell lung cancer (NSCLC), only a subset of patients benefit from treatment and ∼50% of patients whose tumors respond eventually develop acquired resistance (AR). To identify novel drivers of AR, we generated murine Msh2 knock-out (KO) lung tumors that initially responded but eventually developed AR to anti-PD-1, alone or in combination with anti-CTLA-4. Resistant tumors harbored decreased infiltrating T cells and reduced cancer cell-intrinsic MHC-I and MHC-II levels, yet remained responsive to IFNγ.

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Antimicrobial use in food-producing animals such as pigs is a significant issue due to its association with antimicrobial resistance. Florfenicol is a broad-spectrum phenicol antibiotic used in swine for various indications; however, its effect on the swine microbiome and resistome is largely unknown. This study investigated these effects in piglets treated intramuscularly with florfenicol at 1 and 7 days of age.

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Treatment of a Large Gluteal Hydatid Cyst in Syria Using a Manual Negative Pressure Wound Therapy Device (PragmaVAC).

Avicenna J Med

July 2024

Department of Education, Syrian Board of Medical Specialties, Gaziantep, Turkey.

The lungs and liver are the most common sites of hydatid cysts, but they may also be found in other organs. We report the case of a lady in her 50s who presented to a hospital in northwest Syria with a large swelling in the right gluteal region. This was diagnosed as a gluteal abscess, and an incision and drainage were performed.

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Background: Several new treatments have recently been shown to have heart and kidney protective benefits in people with diabetes. Because these treatments were developed in parallel, it is unclear how the different molecular pathways affected by the therapies may overlap. Here, we examined the effects of the mineralocorticoid receptor antagonist finerenone in mice with comorbid diabetes, focusing on the regulation of expression of the glucagon-like peptide-1 receptor (GLP-1R), gastric inhibitory polypeptide receptor (GIPR) and glucagon receptor (GCGR), which are targets of approved or investigational therapies in diabetes.

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Gan-Jiang-Ling-Zhu decoction improves steatohepatitis induced by choline-deficient-high-fat-diet through the METTL14/N6-methyladenosine-mediated Ugt2a3 expression.

J Ethnopharmacol

January 2025

Institute of Digestive Disease, Longhua Hospital, China-Canada Center of Research for Digestive Diseases (ccCRDD), Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China; State Key Laboratory of Integration and Innovation of Classic Formula and Modern Chinese Medicine (Shanghai University of Traditional Chinese Medicine), Shanghai, 200032, China. Electronic address:

Ethnopharmacological Relevance: Gan-Jiang-Ling-Zhu (GJLZ) decoction, a classical Chinese herbal prescription, can be applied for the treatment of metabolic diseases including liver steatosis. Although GJLZ decoction has been widely applied clinically for thousands of years, the mechanism of GJLZ decoction behind treatment of nonalcoholic steatohepatitis (NASH) remains relatively unelucidated.

Aim Of The Study: To elucidate the efficacy of GJLZ decoction in the treatment of NASH and to investigate its underlying mechanisms from an epigenetic perspective.

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Purpose Of Review: Elevated lipoprotein(a) (Lp[a]) is a genetically determined cardiovascular risk factor, causally linked to both atherosclerotic coronary artery disease and aortic stenosis. Elevated Lp(a) is widely prevalent, and several cardiovascular societies now recommend performing Lp(a) screening at least once in all adults. However, there are currently no approved drugs aimed specifically at lowering Lp(a).

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SAMP: Identifying antimicrobial peptides by an ensemble learning model based on proportionalized split amino acid composition.

Brief Funct Genomics

December 2024

Department of Genetics, Cell Biology and Anatomy, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198, United States.

It is projected that 10 million deaths could be attributed to drug-resistant bacteria infections in 2050. To address this concern, identifying new-generation antibiotics is an effective way. Antimicrobial peptides (AMPs), a class of innate immune effectors, have received significant attention for their capacity to eliminate drug-resistant pathogens, including viruses, bacteria, and fungi.

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Background: Approximately half of patients with Crohn's disease require ileocolonic resection. Of these, 50% will subsequently have endoscopic disease recurrence within 1 year. We aimed to evaluate the efficacy and safety of vedolizumab to prevent postoperative recurrence of Crohn's disease.

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Unlabelled: Increased tolerance to cadmium in has been suggested to contribute to their persistence in natural and food production environments. This study investigated the phenotypic cadmium response of strains with efflux pump (variants 1-4) and related strains with . Growth of variant strains ( = 5) in 0 µM-120 µM cadmium salts (CdCl, CdSO) in Mueller-Hinton broth (MHB) was evaluated.

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Depot-medroxyprogesterone acetate (DMPA) and Norethisterone Enanthate (NET-EN) are progestin-only injectable contraceptives widely used by women in sub-Sharan Africa, where incidence of HIV-1 and HSV-2 infection remains high. Studies indicate that DMPA usage can increase the risk of HSV-2 infection, but limited data indicate no increased risk with use of NET-EN. We therefore investigated the effects of NET-EN and DMPA on susceptibility to vaginal HSV-2 infection in ovariectomized (OVX) mice and effects on immune responses, particularly in the vaginal tract (VT).

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Existing studies examining the predictive ability of biomarkers for cognitive outcomes do not account for variance due to measurement error, which could lead to under-estimates of the proportion of variance explained. We used data from the Alzheimer's Disease Neuroimaging Initiative (ADNI) (N = 1084) to estimate the proportion of variance explained by Alzheimer's disease (AD) imaging biomarkers in four cognitive outcomes: memory, executive functioning, language, and visuospatial functioning. We compared estimates from standard models that do not account for measurement error, and multilevel models that do account for measurement error.

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Article Synopsis
  • The study investigates challenges in delivering nanoparticle-based drugs to tumors, focusing on the inconsistent success of the enhanced permeability and retention (EPR) effect.
  • It introduces a technique using multiparametric dynamic contrast-enhanced ultrasound (CEUS) with nanoscale contrast agents to noninvasively analyze tumor microenvironment features and predict the distribution and effectiveness of doxorubicin-laden liposomes.
  • Results indicate that CEUS parameters, like area under the curve and decorrelation time, can accurately differentiate between tumors with varying vascular permeability, potentially serving as biomarkers for treatment responsiveness to nanoparticle therapies.
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Evaluation of GnRH- versus estradiol-based protocols for ovulation synchronization in postpartum Bos taurus grazing beef cows submitted to fixed-time artificial insemination.

Theriogenology

February 2025

Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos, Aires, 1425, Argentina; Instituto de Investigaciones en Reproducción Animal (INIRA), Facultad de Ciencias Veterinarias, Universidad Nacional de la Plata, La Plata, B1900, Buenos Aires, Argentina.

This study compared the effect of a 7-day estradiol- and a 7-day GnRH-based FTAI protocol versus a presynchronized GnRH-based FTAI protocol (7 & 7 GnRH) on pregnancy per AI (P/AI) in multiparous postpartum Angus cows. Cows were blocked according to presence/absence of a CL, body condition score, and days postpartum and assigned randomly to one of three treatments: I) 7-day EB (n = 368), estradiol benzoate (EB) and intravaginal progesterone-(P4)-releasing device (IVPD) on Day -10, prostaglandin F (PG), equine chorionic gonadotropin (eCG) and estradiol cypionate (ECP) at IVPD removal on Day -3 with FTAI done on Day -1 (54 ± 2 h after IVPD removal); II) 7-day GnRH (n = 367), GnRH at IVPD insertion on Day -10, PG and eCG at IVPD removal on Day -3 with GnRH and FTAI on Day 0 (66 ± 2 h after IVPD removal); and III) 7 & 7 GnRH (n = 361), PG at IVPD insertion on Day -17, GnRH on Day -10, IVPD removal, PG and eCG on Day -3 with GnRH and FTAI on Day 0 (66 ± 2 h after IVPD removal). Preovulatory follicle diameter, corpus luteum (CL) presence, CL area, and P4 concentration were determined at IVPD removal, as well as estrus expression at FTAI and P/AI between 35 and 40 days after FTAI.

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Zika virus (ZIKV) infection causes significant human disease that, with no approved treatment or vaccine, constitutes a major public health concern. Its life cycle entirely relies on the cytoplasmic fate of the viral RNA genome (vRNA) through a fine-tuned equilibrium between vRNA translation, replication, and packaging into new virions, all within virus-induced replication organelles (vROs). In this study, with an RNA interference (RNAi) mini-screening and subsequent functional characterization, we have identified insulin-like growth factor 2 mRNA-binding protein 2 (IGF2BP2) as a new host dependency factor that regulates vRNA synthesis.

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Sex-Based Differences in Long-Term Outcomes Following Transcatheter Closure of Patent Foramen Ovale for Cryptogenic Stroke.

Circ Cardiovasc Interv

November 2024

Toronto Congenital Cardiac Centre for Adults, Peter Munk Cardiac Centre, University Health Network, ON, Canada (E.F.-U., L.S., M.O., L.B., E.H).

Article Synopsis
  • * It included 783 patients, where women's outcomes were compared to men's, revealing no significant differences in stroke recurrence, survival, or new-onset atrial fibrillation over a median follow-up of 14 years.
  • * While men had higher rates of pacemaker implantation, the overall results indicate that both sexes benefit similarly from the procedure, highlighting the need for more sex-specific outcome reporting in future research.
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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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