ArticleFrontiers in immunology2025
Neutrophil extracellular traps and macrophage activation contibute to thrombosis and post-covid syndrome in SARS-CoV-2 infection.
Article in Frontiers in immunology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Neutrophil extracellular traps promote macrophage activation through Toll-like receptor engagement and PKA and NF-kB signaling pathways.Cell communication and signaling : CCS · 2026Article
- Rare pediatric multi-system thrombosis post-COVID-19: a three-year follow-up case report and narrative review on rivaroxaban for long-term management.Orphanet journal of rare diseases · 2026Review
- Review
- Neutrophil Dynamics in Viral Infections: Drivers of Inflammation and Targets for Pro-Resolving Therapies.Journal of innate immunity · 2026Review
- A brief report: absence of elevated circulating NETosis markers in long-term long COVID.Frontiers in cellular and infection microbiology · 2026Article
- Antioxidants as Modulators of NETosis: Mechanisms, Evidence, and Therapeutic Potential.International journal of molecular sciences · 2025Review
- COVID-19: a vascular nightmare unfolding.Frontiers in immunology · 2025Review
- Smart Thrombosis Care: The Rise of Closed-Loop Diagnosis-to-Treatment Nano Systems.International journal of nanomedicine · 2025Review
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Authors and funding
10 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: SARS-CoV-2 infection activates macrophages and induces the release of neutrophil extracellular traps (NETs). Excess NETs is linked to inflammatory and thrombotic complications observed in COVID-19. Aim: To explore the impact of NETs and macrophage activation on SARS-CoV-2-infected patients who developed complications. Methods: We included 30 patients from the first (March 2020) and 30 from the second wave (July 2021), collecting two plasma samples at diagnosis and seven days later. Data on demographics, comorbidities, and basic analytical data were compiled. NETs markers (myeloperoxidase (MPO), neutrophil elastase (NE), p-selectin (P-SEL) and S100A8/S100A9 heterodimer (MRP)) and macrophage activation markers (Chitotriosidase activity (ChT), CCL18/PARC and YKL-40) were measured. Results: The first wave had higher incidences of post-COVID syndrome, ICU admissions, and mortality. Patients of each wave showed elevated blood cells, liver enzymes, and coagulation markers at the time of diagnosis, with fibrinogen and D-Dimer differing between waves. NET and macrophage markers, NE, MPO, MRP, DNAse, ChT, and CCL18 were elevated, while P-SEL, cfDNA, and YKL-40 were decreased if compared to controls. A decrease in NE and DNAse is a link to lower levels of these two markers in complications versus without complications. Conclusions: This study emonstrates alterations in NETs and macrophage activation markers in COVID-19 patients, indicating an imbalance in inflammatory response regulation.
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