Since its discovery in 2019, multiple variants of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) have been identified. This study investigates virus spread and associated pathology in the upper and lower respiratory tracts of Syrian golden hamsters at 4 days post intranasal SARS-CoV-2 Omicron infection, in comparison to infection with variants of concern (VOCs) Gamma and Delta as well as ancestral strain 614 G. Pathological changes in the upper and lower respiratory tract of VOC Omicron infected hamsters are milder than those caused by other investigated strains. VOC Omicron infection causes a mild rhinitis with little involvement of the olfactory epithelium and minimal lesions in the lung, with frequent sparing of the alveolar compartment. Similarly, viral antigen, RNA and infectious virus titers are lower in respiratory tissues of VOC Omicron infected hamsters. These findings demonstrate that the variant has a decreased pathogenicity for the upper and lower respiratory tract of hamsters.
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http://dx.doi.org/10.1038/s41467-022-31200-y | DOI Listing |
Alzheimers Dement
December 2024
Laboratory of Neuroscience (LIM-27), Department and Institute of Psychiatry, Faculty of Medicine, University of São Paulo, São Paulo, São Paulo, Brazil.
Background: Sleep-related breathing disorders are commonly reported in the Down Syndrome (DS) population, but data on its prevalence and severity are scarce, especially for the adult population. The increase in life expectancy and premature aging in patients with DS reinforces the need for an assessment of sleep quality. This study evaluated sleep-disordered breathing in adults with DS using sleep measures by polysomnography.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Sri Sivasubramaniya Nadar College Of Engineering, Chennai, Tamil Nadu, India.
Background: Sleep patterns and disruptions may associate with increased dementia risk and contribute to its progression and cognitive decline. Understanding the complexity of the sleep-dementia relationship is crucial for developing interventions that may delay cognitive decline and enhance the well-being of individuals with dementia. This study seeks to explore how the sleeping patterns of patients with dementia impact them and aims to provide insights to help improve the sleep patterns of individuals affected by dementia.
View Article and Find Full Text PDFClin Nurs Res
January 2025
Institute of Human Genetics, Faculty of Medicine, University of Belgrade, Serbia.
The hypoxia-inducible factor-1 alpha (HIF-1 alpha) is a major regulator of adaptive response to hypoxia, common in patients with severe coronavirus disease 2019 (COVID-19). In addition, HIF-1 alpha regulates the expression of the most important proteins necessary for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection of cells. The study included 129 hospitalized COVID-19 patients.
View Article and Find Full Text PDFAnn Surg
January 2025
Division of Colorectal Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School; Boston, MA, USA.
Objective: To explore the association of socioeconomic status (SES) and race/ethnicity with perioperative metrics within the Enhanced Recovery After Surgery (ERAS) framework to identify gaps for equity-informed improvements.
Summary Background Data: Although ERAS pathways improve perioperative outcomes through standardized care, disparities in protocol adherence and postoperative outcomes persist, particularly for vulnerable populations.
Methods: We conducted a retrospective cohort study using a single-institution database of elective colorectal surgeries (2018-2021).
J Cancer
January 2025
Department of Gastrointestinal Surgery, The General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, China.
The TP53 mutation is a poor prognostic factor for malignant tumors in a number of organs. The present study primarily aimed to clarify the impact of the mutant pattern of p53 on the prognosis and recurrence of gastric cancer. : For this purpose, 519 patients who underwent radical gastrectomy for cancer were enrolled in the present study.
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