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Impact of SARS-CoV-2 spike antibody positivity on infection and hospitalisation rates in immunosuppressed populations during the omicron period: the MELODY study.
Lancet
January 2025
Centre for Inflammatory Disease, Department of Immunology and Inflammation, Imperial College London, London, UK; Imperial College Renal and Transplant Centre, Imperial College Healthcare NHS Trust, Hammersmith Hospital, London, UK. Electronic address:
Background: In the UK, booster COVID-19 vaccinations have been recommended biannually to people considered immune vulnerable. We investigated, at a population level, whether the absence of detectable anti-SARS-CoV-2 spike protein IgG antibody (anti-S Ab) following three or more vaccinations in immunosuppressed individuals was associated with greater risks of infection and severity of infection.
Methods: In this prospective cohort study using UK national disease registers, we recruited participants with solid organ transplants (SOTs), rare autoimmune rheumatic diseases (RAIRDs), and lymphoid malignancies.
The dominant lineage of an emerging pathogen harbours contact-dependent inhibition systems.
Microb Genom
January 2025
Department of Pediatrics, Division of Pulmonary, Asthma, Cystic Fibrosis, and Sleep, Emory University School of Medicine, Atlanta, Georgia, USA.
Bacteria from the complex (Smc) are important multidrug-resistant pathogens that cause a broad range of infections. Smc is genomically diverse and has been classified into 23 lineages. Lineage Sm6 is the most common among sequenced strains, but it is unclear why this lineage has evolved to be dominant.
View Article and Find Full Text PDFAntimicrobial peptide glatiramer acetate targets Pseudomonas aeruginosa lipopolysaccharides to breach membranes without altering lipopolysaccharide modification.
NPJ Antimicrob Resist
February 2024
National Heart and Lung Institute, Imperial College London, London, UK.
Antimicrobial peptides (AMPs) are key components of innate immunity across all domains of life. Natural and synthetic AMPs are receiving renewed attention in efforts to combat the antimicrobial resistance (AMR) crisis and the loss of antibiotic efficacy. The gram-negative pathogen Pseudomonas aeruginosa is one of the most concerning infecting bacteria in AMR, particularly in people with cystic fibrosis (CF) where respiratory infections are difficult to eradicate and associated with increased morbidity and mortality.
View Article and Find Full Text PDFProtective Effects of Hydatid Cyst Fluid on Inflammation and Tissue Damage in Rat Model of Type 1 Diabetes.
Int J Biochem Cell Biol
January 2025
Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran. Electronic address:
Cystic echinococcosis, caused by Echinococcus granulosus, is a zoonotic disease with immunomodulatory properties attributed to hydatid cyst fluid (HCF). Given the immune-modulating and anti-inflammatory properties of HCF observed in other contexts, its potential therapeutic effects in diabetes remain unexplored. This study aimed to investigate the potential therapeutic effects of HCF on glycemic control, inflammatory cytokines, and tissue histopathology in a streptozotocin (STZ)-induced model of type 1 diabetes.
View Article and Find Full Text PDFPerinatal dysfunction of innate immunity in cystic fibrosis.
Sci Transl Med
January 2025
First Department of Medicine, Cardiology, TUM University Hospital, Technical University of Munich, School of Medicine and Health, Munich 81675, Germany.
In patients with cystic fibrosis (CF), repeated cycles of infection and inflammation eventually lead to fatal lung damage. Although diminished mucus clearance can be restored by highly effective CFTR modulator therapy, inflammation and infection often persist. To elucidate the role of the innate immune system in CF etiology, we investigated a CF pig model and compared these results with those for preschool children with CF.
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