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Gerontologist
September 2025
Department of Child Development and Family Studies, College of Human Ecology, Seoul National University, Seoul, South Korea.
Background And Objectives: Volunteering has cognitive benefits in later life and has been theorized to protect against Alzheimer's disease and related dementias (ADRD). A small but growing body of volunteer programs target people with mild cognitive impairment (MCI)-who are presumably at elevated risk for ADRD, but we know surprisingly little about who volunteers with MCI and how volunteering affects their subsequent cognitive changes. The current study sought to address these gaps.
View Article and Find Full Text PDFBull Math Biol
September 2025
Department of Mathematics and Faculty of Medicine, The University of Ottawa, Ottawa, ON, K1N 6N5, Canada.
Host defense and pathogen virulence interact and mutually shape each other's evolution. Host-pathogen co-evolutionary outcomes have potentially significant impacts on population dynamics and vice versa. To investigate host-pathogen interactions and explore the impact of micro-level co-evolutionary outcomes on macro-level epidemics, we develop a co-evolutionary model with a combined host-defense strategy.
View Article and Find Full Text PDFJ Virol
September 2025
Department of Hepatology, Center of Infectious Diseases and Pathogen Biology, Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, Jilin, China.
Unlabelled: Cholesterol 25-hydroxylase (CH25H), an interferon-stimulated gene (ISG), has been implicated in broad-spectrum antiviral immunity. Here, we identify CH25H as a potent suppressor of hepatitis B virus (HBV) replication that significantly outperforms IFN-α in reducing HBV DNA, pregenomic RNA (pgRNA), HBsAg, and HBeAg, without inducing cytotoxicity. However, CH25H is weakly expressed in hepatocytes and only modestly induced by type I interferon.
View Article and Find Full Text PDFBiomed Pharmacother
September 2025
Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China. Electronic address:
Immune-mediated necrotizing myopathy (IMNM) is an emerging and severe form of myositis. Most patients experience persistent muscle weakness or recurrent attacks within their lifetime. The previous view suggests that autoimmune and complement activation play a key role in muscle damage, and aggressive immunotherapy may benefit patients.
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