27,901 results match your criteria: "Que.; The Ottawa Hospital Research Institute Srour[Affiliation]"

Approach to prevention of respiratory syncytial virus disease in infants by passive immunization.

Can Fam Physician

December 2024

Senior Medical Advisor in the Centre for Immunization Surveillance and Programs at the Public Health Agency of Canada, Associate Professor in the Department of Pediatrics in the Section of Allergy and Clinical Immunology at the University of Manitoba in Winnipeg, and Adjunct Professor in the Department of Pediatrics in the Division of Allergy and Immunology at the University of British Columbia in Vancouver.

Article Synopsis
  • The objective is to help family physicians effectively discuss RSV immunizations with their patients.
  • There are three preventive options for severe RSV disease in infants: palivizumab for high-risk infants, nirsevimab for all infants, and the RSVpreF vaccine for pregnant individuals.
  • Family doctors need to understand each immunization option's specifics, including recommendations and patient considerations, to support informed choices for parents and infants.
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Chronic Gastroesophageal Reflux Dysregulates Proteostasis in Esophageal Epithelial Cells.

Cell Mol Gastroenterol Hepatol

December 2024

Department of Surgery, University of Miami, Miami, Florida; Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida; Department of Veterans Affairs, Miami VA Healthcare System, Miami, Florida. Electronic address:

Article Synopsis
  • GERD is a common digestive disorder that causes damage to the esophagus due to stomach acid exposure, which can lead to serious complications like esophageal tumors and is characterized by oxidative stress and reactive byproducts known as isoLGs.
  • The study examined how isoLGs interact with and cause misfolding and aggregation of proteins, using various assays and animal models to analyze esophageal tissues affected by GERD.
  • The findings reveal that GERD leads to protein misfolding and cell death through mechanisms involving isoLG adduction, suggesting it shares features with other diseases related to protein aggregation.
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Genomic and clinical characterization of pediatric lymphoepithelioma-like carcinoma.

J Transl Med

December 2024

Department of Pediatric Oncology, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, People's Republic of China.

Article Synopsis
  • Pediatric lymphoepithelioma-like carcinoma (pLELC) is a rare cancer with uncertain prognosis, and this study focused on its genomic and clinical features among 41 patients from Sun Yat-sen University Cancer Center.
  • The results showed that patients treated with a combination of anti PD-1 therapy and chemotherapy had high progression-free and overall survival rates, with significant immune-related biomarkers identified in the tumor samples.
  • The study suggests that targeting DNA repair pathways could be a viable treatment strategy for pLELC, and advocates for further clinical trials using immune checkpoint inhibitors in this pediatric population.
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Article Synopsis
  • The study focuses on understanding the knowledge, attitudes, and practices (KAP) of family caregivers of gastric cancer patients post-gastrectomy regarding dietary management, highlighting their strong need for nutrition knowledge.
  • The study involved 508 caregivers, mostly female and aged 40-60, with a significant number showing poor knowledge (45%) and practices (40%), although attitudes towards dietary management were largely positive (99%).
  • Analysis revealed weak correlations between knowledge and attitudes and practice, with better attitudes linked to better practices, while factors like age and duration of caregiving negatively affected practice scores.
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Article Synopsis
  • Adverse drug reactions (ADRs) can be classified into Type A (pharmacokinetics-related) and Type B (immune response-related), with Type B reactions being less well-defined and often categorized into immediate and delayed types.
  • This review aims to explore the immunological mechanisms behind delayed hypersensitivity reactions to medications, highlighting their complexities.
  • Findings discuss the classification, clinical signs, diagnosis, treatment plans, and overall prognosis of delayed hypersensitivity, emphasizing the need for prompt, tailored approaches by healthcare professionals.
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Article Synopsis
  • This study examined how mothers in Kween District viewed their experiences with male midwives (MMWs) during childbirth, using a qualitative approach to gather insights.
  • Data was collected from 33 mothers through in-depth interviews and focus group discussions at three health facilities, focusing on their feelings and perceptions regarding MMWs.
  • Participants expressed mixed feelings, with some discomfort around male caregivers in an intimate process, but many appreciated the supportive and respectful care provided by MMWs, highlighting the need for awareness campaigns to promote skilled birth attendance regardless of gender.
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In 1936, Ignacio Chávez submitted a proposal to the Mexican government for the creation of a cardiology institute. He had studied in Paris, Berlin, and other European cities in 1926. Upon his return to Mexico, he founded the Cardiology Service at the General Hospital in Mexico City, the first of its kind in the country.

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Short-term water demand forecasting (STWDF) for multiple spatially and temporally correlated District Metering Areas (DMAs) is an essential foundation for achieving more refined management of urban water supply networks. However, due to the greater uncertainty associated with specific DMA demand compared to overall water usage, accurately predicting STWDF poses significant challenges. This study introduces an innovative network architecture-the multi-scale correction module neural network, built upon Long Short-Term Memory (LSTM) networks and Convolutional Neural Networks (CNN) enhanced with Attention mechanisms-for simultaneous STWDF with a temporal resolution of one hour over a week for 10 DMAs located in a single city in northern Italy.

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Resin monomers induce apoptosis of the pulp-dentin complex through the mitochondrial pathway.

J Toxicol Sci

December 2024

Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, People's Republic of China.

Numerous studies have confirmed that the apoptosis induced by the methacrylate resin monomers triethyleneglycol-dimethacrylate (TEGDMA), 2-hydroxy ethyl methacrylate (HEMA), etc., in pulp cells and odontoblast-like cells is caused mainly by oxidative stress (OS). Reactive oxygen species (ROS), recognized as the most important risk factor for apoptosis in cells of the pulp-dentin complex, are produced mainly via the mitochondrial respiratory chain.

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[Use of clinical ultrasound in primary care: Dyspnea].

Semergen

December 2024

Grupo de Trabajo de Ecografía, Sociedad Española de Médicos de Atención Primaria (SEMERGEN), España; Médico especialista en MFyC, Centro de Salud Valle de la Oliva, Majadahonda, Madrid, España.

Dyspnea is a symptom frequently consulted in primary care and has a wide range of etiologies (respiratory, cardiovascular, obesity, etc.). It causes 3-4 million emergency consultations per year.

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Characterization of the chitinase gene family in Saccharum reveals the disease resistance mechanism of ScChiVII1.

Plant Cell Rep

December 2024

Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, National Engineering Research Center for Sugarcane, Center for Genomics, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.

Article Synopsis
  • The study characterizes the ScChiVII1 gene in sugarcane, which is important for defending against pathogens by breaking down chitin, crucial for the survival of certain diseases.
  • Researchers identified 85 SsChi and 23 ShChi chitinase genes from wild and cultivated sugarcane, finding that these genes can respond to smut pathogen stress.
  • Transgenic Nicotiana benthamiana plants overexpressing ScChiVII1 showed increased disease resistance by enhancing specific biochemical activities and pathways related to plant defense after infection.
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[Use of clinical ultrasound in Primary Care: Lynphadenopathy].

Semergen

December 2024

Medicina Familiar y Comunitaria, Centro de Salud Mar Báltico, Madrid, España; Grupo de Trabajo de Ecografía, Sociedad Española de Médicos de Atención Primaria (SEMERGEN), España.

Lymphadenopathy is the alteration in the consistency or size of a lymph node. It is often associated with benign diseases, although factors such as gender, location, comorbidities, and the patient's age can increase the percentage of malignancy. Infections, tumors, and systemic diseases are its most common causes.

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This study aimed to verify the association between gross domestic product values - purchasing power parity (GDP PPP) and scores of the World Breastfeeding Trends Initiative (WBTi) tool. This is an ecological study carried out with 98 low-income (n = 43), middle-income (n = 27), and high-income (n = 28) countries. The evaluation of pro-breastfeeding actions was obtained from the WBTi and the GDP PPP from the World Bank.

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Lubricating and Dual-Responsive Injectable Hydrogels Formulated From ZIF-8 Facilitate Osteoarthritis Treatment by Remodeling the Microenvironment.

Small

November 2024

Department of Sports Medicine, The First Affiliated Hospital, The Guangzhou Key Laboratory of Precision Orthopedics and Regenerative Medicine, Guangdong Provincial Key Laboratory of Speed Capability, Jinan University, Guangzhou, 510630, P. R. China.

Osteoarthritis (OA) is a progressively developing condition primarily characterized by the deterioration of articular cartilage and the proliferation of bone, along with ongoing inflammation. Although the precise pathogenesis remains somewhat elusive, restoring the homeostatic balance of the intra-articular microenvironment is crucial for the management of OA. Intra-articular injection of medication is one of the most direct and effective treatment methods; however, most injectable drugs used for osteoarthritis treatment, due to their rapid breakdown, quick release, poor biological activity, and frequent injections, leading to increased risk of infection and suboptimal therapeutic outcomes.

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Pyroptosis has gained attention for its potential to reinvigorate the immune system within the tumor microenvironment. However, current approaches employing pyroptosis inducers suffer from limitations. They primarily rely on single agents, lack precise targeting, and potentially disrupt the intricate bone formation microenvironment, hindering local repair of tumor-induced bone defects.

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Characteristics and health conditions in older people who work in Mexico. A comparative analysis between cohorts and sex.

Gac Med Mex

November 2024

Department of Social Relations, División de Ciencias Sociales y Humanidades, Universidad Autónoma Metropolitana Xochimilco, Mexico City. Mexico.

Background: The study of the work and health of older adults is limited but relevant considering that the living and health conditions in which they age are not the best in Mexico, given the job insecurity that does not access to decent contributory pensions.

Objective: To analyse the differences in the sociodemographic, labour and health conditions characteristics of two cohorts of older people aged 65 to 74 years who are employed in the labour market.

Material And Methods: Analysis of the National Study of Health and Aging in Mexico for 2001 and 2021 of sociodemographic and work characteristics and health conditions by cohort and sex.

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Accurate analysis of pesticide residues in such a complex matrix as cannabis is a challenging task. The aim of this study was to find an optimal way of removing abundant matrix co-extracts from Quick, Easy, Cheap, Effective, Rugged, and Safe extract prior to its analysis by gas chromatography-tandem mass spectrometry (GC-MS/MS). Out of the seven procedures tested, clean-up with Supel QuE Verde sorbent provided the most satisfactory performance characteristics for 277 targeted pesticides, which is the highest number of these analytes ever investigated within a GC-MS-based study focused on cannabis.

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Simultaneous Localization And Mapping (SLAM) algorithms play a critical role in autonomous exploration tasks requiring mobile robots to autonomously explore and gather information in unknown or hazardous environments where human access may be difficult or dangerous. However, due to the resource-constrained nature of mobile robots, they are hindered from performing long-term and large-scale tasks. In this paper, we propose an efficient multi-robot dense SLAM system that utilizes a centralized structure to alleviate the computational and memory burdens on the agents (i.

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Role of Paraoxonase 2 in Airway Epithelial Response to Oxidant Stress.

Antioxidants (Basel)

October 2024

Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Duke University, Durham, NC 27710, USA.

Asthma is a widespread chronic lung disease characterized by airway inflammation and hyperresponsiveness. This airway inflammation is classified by either the presence (T2-high) or absence (T2-low) of high levels of eosinophils. Because most therapies for asthma target eosinophils and related pathways, treatment options for T2-low disease are limited.

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Article Synopsis
  • The study examines how compressed nitrogen gas interacts with a complex fluid, magnesium lithium phyllosilicate (MLPS), through phenomena known as viscous fingering (VF) and elastic fracture (EFr) in a controlled environment designed as a Hele-Shaw cell.
  • Viscous fingering primarily results in finger-like structures where gas invasion affects a confined region, with a notable velocity distribution featuring a larger component parallel to the growth direction; conversely, elastic fracture entails a larger disturbed area with a more complex velocity distribution around the bubble.
  • The research emphasizes the differences in the velocity fields of VF and EFr, proposing quantitative indicators to measure characteristics such as the affected area ratio and velocity
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[Not Available].

CMAJ

November 2024

Départements de médecine d'urgence (Rosenberg), de médecine familiale (Rangwala), et d'obstétrique et de gynécologie (Magee), Université d'Ottawa, Ottawa, Ont.

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Introduction And Hypothesis: Accurate identification of female populations at high risk for urinary incontinence (UI) and early intervention are potentially effective initiatives to reduce the prevalence of UI. We aimed to apply machine-learning techniques to establish, internally validate, and provide interpretable risk assessment tools.

Methods: Data from a cross-sectional epidemiological survey of female urinary incontinence conducted in 2022 were used.

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Automatic identification of clinically important species by artificial intelligence-based image recognition: proof-of-concept study.

Emerg Microbes Infect

December 2025

Department of Microbiology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong.

While morphological examination is the most widely used for identification in clinical laboratories, PCR-sequencing and MALDI-TOF MS are emerging technologies in more financially-competent laboratories. However, mycological expertise, molecular biologists and/or expensive equipment are needed for these. Recently, artificial intelligence (AI), especially image recognition, is being increasingly employed in medicine for fast and automated disease diagnosis.

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Article Synopsis
  • The study examines the trends in congenital heart defects (CHDs) among perinatal infants in Guangxi, China, from 2016 to 2020, using data from over 3.6 million infants monitored by the Guangxi Birth Defects Monitoring Network.
  • A total of 10,817 cases of CHDs were identified, resulting in a prevalence rate of 29.82 per 10,000 perinatal infants, with CHDs making up 24.50% of all birth defects.
  • Significant increases in CHD prevalence were observed over the study period, particularly correlating with maternal age, which had a notable influence on the rising rates.
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