1,355 results match your criteria: "St Boniface Hospital[Affiliation]"

The Role of Retinoic-Acid-Related Orphan Receptor (RORs) in Cellular Homeostasis.

Int J Mol Sci

October 2024

Department of Physiology and Pathophysiology, Rady College of Medicine, Max Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R2H 2A6, Canada.

Retinoic-acid-related orphan receptors (RORs) are transcription factors belonging to the nuclear receptor subfamily consisting of RORα, RORβ, and RORγ. By binding to the ROR response elements (ROREs) on target gene promoters, RORs regulate a wide variety of cellular processes, including autophagy, mitophagy, oxidative stress, and inflammation. The regulatory roles of RORs are observed in cardiac cells, hepatocytes, pulmonary epithelial cells, renal cells, immune cells, and cancer cells.

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Background/objectives: Acute myeloid leukemia (AML) is characterized by therapeutic failure and long-term risk for disease relapses. As several therapeutic targets participate in networks, they can rewire to eventually evade single-target drugs. Hence, multi-targeting approaches are considered on the expectation that interference with many different components could synergistically hinder activation of alternative pathways and demolish the network one-off, leading to complete disease remission.

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Background: The recognition of thin marginal spinal syndesmophytes is important, in part due to their association with non-traumatic or mildly traumatic vertebral fractures.

Purpose: To determine a lower limit on the prevalence of marginal spinal syndesmophytes using chest radiographs.

Material And Methods: We conducted a retrospective analysis of 500 chest radiographs, assessing the prevalence of thin marginal syndesmophytes, bridging or near-bridging osteophytes, and flowing paravertebral ossifications in the thoracic intervertebral discs among individuals aged 16 years and older in a North American city.

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Clinical samples are routinely inactivated before molecular assays to prevent pathogen transmission. Antibody-based assays are sensitive to changes in analyte conformation, but the impact of inactivation on the analyte detectability has been overlooked. This study assessed the effects of commonly used inactivation-methods, Triton X-100 (0.

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Cardiac oxylipin perturbances in response to 2-monochloropropane-1,3-diol exposure are ameliorated by dietary adequacy of the essential n-3 fatty acid, α-linolenic acid.

Food Chem Toxicol

December 2024

Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB, Canada; Canadian Centre for Agri-Food Research in Health and Medicine, St Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB, Canada.

2-Monochloropropane-1,3-diol (2-MCPD) is a food contaminant with demonstrated cardiotoxicity in rats. This adverse effect was previously associated with lower anti-inflammatory docosahexaenoic acid (DHA)-derived cardiac oxylipins in F344 rats. This previous study utilized corn oil as the dietary lipid; we therefore investigated whether deficient (0.

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Is there any association between type of dietary fat and quality of life in hemodialysis patients? A cross-sectional study.

Front Nutr

September 2024

Nutrition and Food Security Research Center and Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran.

Background: Hemodialysis (HD) patients have a low quality of life (QOL), and dietary intakes may impact both somatic and psychosocial aspects of QOL. Nevertheless, the relationship between QOL and different dietary fats has not yet been evaluated.

Objective: The purpose of this study was to assess the association between QOL and the types/quantities of dietary fats intake in HD patients.

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Background: The Extended Focused Assessment with Sonography for Trauma (E-FAST) is a diagnostic ultrasound technique used in hospital and pre-hospital settings for patients with torso trauma. While E-FAST is common in emergency departments, its pre-hospital use is less routine. This study aims to establish a set of variables for designing studies on pre-hospital E-FAST through a Delphi consensus process involving international experts.

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Purpose: This study aimed to compare early clinical and hemodynamic outcomes of transcatheter aortic valve replacement (TAVR) in patients with severe aortic stenosis and large aortic annulus using either balloon-expandable valves (BEVs) or self-expanding valves (SEVs).

Methods: A comprehensive search of PubMed, Scopus, and the Cochrane Central Register of Controlled Trials was conducted through September 10, 2023, to perform a meta-analysis comparing the clinical outcomes of BEV versus SEV for large aortic annulus (annulus perimeter ≥ 80 mm).

Results: Seven studies (one propensity-matched study and six observational studies) met our eligibility criteria, including a total of 2167 patients (BEV, 1521; SEV, 646).

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The possibility of impaired cognitive function during deep space flight missions or while living on a Martian colony is a critical point of concern and pleads for further research. In addition, a fundamental gap exists both in our understanding and application of countermeasures for the consequences of long duration space travel and/or living in an extreme environment such as on the Moon or Mars. Previous studies, while heavily analyzing pre- and post-flight conditions, mostly fail to appreciate the cognitive stressors associated with space radiation, microgravity, confinement, hostile or closed environments, and the long distances from earth.

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Role of Na-K ATPase Alterations in the Development of Heart Failure.

Int J Mol Sci

October 2024

Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University, 83232 Bratislava, Slovakia.

Article Synopsis
  • - Na-K ATPase is crucial for heart function, consisting of three subunits that help transport sodium and potassium ions, maintaining the balance of these cations in heart cells and influencing heart contractions.
  • - This enzyme also acts as a receptor for certain glycosides and steroids, regulating heart metabolism and cell survival, with its activity affected by various hormones through modifications of its associated protein, phospholemman.
  • - In heart failure, Na-K ATPase activity can change in different ways, leading to either adaptive mechanisms for maintaining function or issues like calcium overload and arrhythmias, ultimately impacting heart health based on the enzyme's isoform composition and oxidative stress.
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Article Synopsis
  • A study analyzed the outcomes of chronic total occlusion (CTO) percutaneous coronary interventions (PCI) specifically in patients with anomalous coronary arteries (ACA) from a large dataset of over 14,000 patients between 2012 and 2023.
  • Among 14,470 CTO procedures, only 36 (0.24%) were performed on patients with ACA, who displayed similar baseline characteristics to those without ACA, but had more complicated lesions, requiring longer procedures and greater contrast volume.
  • Despite the increased complexity, ACA patients achieved similar procedural success rates to non-ACA patients, with no major adverse cardiac events reported in the ACA group, indicating a favorable outcome for CTO PCI in
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A Comparison of Dry Bean and Pea Consumption on Serum Cholesterol: A Randomized Controlled Trial in Adults with Mild Hypercholesterolemia.

J Nutr

November 2024

Department of Food and Human Nutritional Sciences, and Dept of Physiology and Pathophysiology, University of Manitoba, Winnipeg, Manitoba, Canada; Canadian Centre for Agri-Food Research in Health and Medicine (CCARM), St. Boniface Hospital Albrechtsen Research Centre, Winnipeg, Manitoba, Canada.

Background: Diets including pulses are associated with better cardiovascular profiles, including lipid, glycemia, and hemodynamics; however, evidence is lacking regarding the contributions of individual pulse varieties.

Objectives: This randomized, controlled trial examined the effects of beans or peas individually, relative to rice, on LDL-cholesterol levels (primary outcome) and other indices of cardiovascular disease risk (secondary outcomes) at 6 wk in adults with mild hypercholesterolemia.

Methods: This randomized, controlled, single-blind, 3-arm parallel-group study was conducted in 2 Canadian cities (Edmonton, Alberta; Winnipeg, Manitoba).

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Article Synopsis
  • The study looked at how a heart procedure called TEER affects patients with different types of heart failure (HF) who also have a condition called mitral regurgitation (MR).
  • Over 162 patients were analyzed, and they found that people with mixed HF had worse health outcomes after the procedure compared to those with just systolic or diastolic HF.
  • The total hospital costs were similar for all groups, meaning no one type of heart failure cost significantly more than the others during their hospital stay.
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Transcatheter aortic valve implantation has revolutionized the treatment of aortic stenosis. The small aortic annulus is one of the most challenging aspects of aortic stenosis treatment and since the beginning, TAVI has shown promising results in this subgroup of patients. This systematic literature review aims to investigate the short and long-term outcomes of TAVI in the small aortic annulus.

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Vitamins are known to affect the regulation of several biochemical and metabolic pathways that influence cellular function. Adequate amounts of both hydrophilic and lipophilic vitamins are required for maintaining normal cardiac and vascular function, but their deficiencies can contribute to cardiovascular abnormalities. In this regard, a deficiency in the lipophilic vitamins, such as vitamins A, D, and E, as well as in the hydrophilic vitamins, such as vitamin C and B, has been associated with suboptimal cardiovascular function, whereas additional intakes have been suggested to reduce the risk of atherosclerosis, hypertension, ischemic heart disease, arrhythmias, and heart failure.

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Many foods including edible oils contain 2-monochloropropane-1,3-diol (2-MCPD), a processing-induced chemical contaminant. Cardiotoxic effects have been shown to result from oral 2-MCPD exposure in rodents, but the underlying mechanisms of action remain poorly understood. We undertook a comprehensive multi-omics approach to assess changes at the transcriptomic, proteomic, and oxylipin levels in heart tissues from male F344 rats that were exposed to 0 or 40 mg/kg BW/day of 2-MCPD in the diet for 90 days, in a regulatory compliant rodent bioassay.

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Right Anterior Minithoracotomy Approach for Aortic Valve Replacement.

Innovations (Phila)

December 2024

Section of Cardiac Surgery, Division of Cardiac Sciences, Libin Cardiovascular Institute, University of Calgary, AB, Canada.

By sparing the sternum, the right anterior minithoracotomy (RAMT) approach may facilitate a quicker functional recovery when compared with conventional aortic valve replacement (AVR). In the following review, outcomes after RAMT AVR are compared with full sternotomy AVR. The RAMT approach is described, including suggestions for patient selection.

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Bioactive lipids are altered in the heart, kidney, and serum of male and female F344 rats sub-chronically exposed to dietary 2-MCPD.

Food Chem Toxicol

November 2024

Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Canada; Canadian Centre for Agri-Food Research in Health and Medicine, St Boniface Hospital Research Centre, Winnipeg, MB, Canada.

Chloropropanols have been identified as processing-induced food contaminants that occur as by-products of the manufacturing of refined food oils and hydrolyzed vegetable protein. There has been a paucity of research on the 2-monochloropropane-1,3-diol (2-MCPD) isomer, thus forming a data gap for regulatory risk assessment. Previous studies suggest 2-MCPD causes adverse cardiotoxic, nephrotoxic, and myotoxic effects, but were inconclusive for hazard identification; thus a dose-response OECD TG-408-compliant study was conducted by Health Canada.

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This comprehensive review examines the role of coffee consumption in promoting healthy aging and its potential impact on cancer prevention. Previous research has shown that moderate coffee intake may contribute to extending healthspan and enhancing longevity through beneficial effects on cardiometabolic health and key biological processes involved in aging. However, the relationship between coffee consumption and cancer risk remains controversial.

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Estimating the Potential Health Care Cost-Savings from a Flax-Based Treatment for Hypertension.

Nutrients

August 2024

Canadian Centre for Agri-Food Research in Health and Medicine, Albrechtsen Research Centre, St. Boniface Hospital, Winnipeg, MB R2H 2A6, Canada.

Hypertension contributes to the increase in health care spending in Canada through two primary mechanisms. First, it directly increases costs, as individuals with hypertension require medical care to manage the condition. Second, it indirectly raises expenses by serving as a risk factor for numerous chronic diseases, leading to increased health care utilization among those affected.

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Oxidative stress is associated with asthma pathobiology. We reported that oxidized phosphatidylcholines (OxPCs) are mediators of oxidative stress and accumulate in the lung in response to allergen challenge. The current study begins to unravel mechanisms for OxPC accumulation in the lung, providing the first insights about how OxPCs underpin allergic airway pathophysiology, and pre-clinical testing of selective neutralization of OxPCs in a murine model of allergic asthma.

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Tailored-Biomaterials Based Potential Strategies for Cardiovascular Disease.

Discov Med

August 2024

Department of Mechanical Engineering, Division of Medical Sciences, University of Victoria, Victoria, BC V8W 2Y2, Canada.

Cardiovascular disease is a significant health concern worldwide, and varied effective treatment and prevention methods have been developed. Among these, tailored biomaterials-based strategies such as stents, scaffolds, patches, and drug delivery systems have emerged as a promising avenue. These devices are designed to match the mechanical and biological mechanisms of the cardiovascular system, ensuring optimal performance and compatibility.

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Current practices in the management of temporary mechanical circulatory support: A survey of CICU directors in North America.

Am Heart J

October 2024

Northwell, New Hyde Park, Cardiovascular Institute, NY; Lenox Hospital, Northwell Health, New York, New York; Division of Cardiology, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY. Electronic address:

Article Synopsis
  • The study investigates current management practices for patients using temporary mechanical circulatory support (tMCS) devices like intra-aortic balloon pumps and Impella in North American cardiac intensive care units.
  • An online survey was conducted, with a response rate of 84% from 37 centers, focusing on hemodynamic monitoring, hemocompatibility, and weaning/removal of the devices.
  • Results showed significant variability in how these practices are implemented, indicating a need for standardized guidelines to improve patient outcomes with tMCS.
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