ArticleLupus science & medicine2025
Endotoxaemia in childhood-onset systemic lupus erythematosus induces low-density granulocytes and extracellular traps of innate immune cells.
Article in Lupus science & medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Immune ontogeny in childhood-onset systemic lupus erythematosus: effect of immune maturity on disease phenotype and therapeutic responses.Frontiers in immunology · 2026Review
- Biological roles and clinical translation of low-density neutrophils in rheumatic, autoimmune and inflammatory diseases: paradigm reconstruction and unresolved questions.Frontiers in immunology · 2026Review
- Low-density granulocytes and neutrophil extracellular traps in dengue, impacts of interferon alpha and cell-free DNA.Scientific reports · 2025Article
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6 authors.
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Abstract
backgroundEndotoxaemia without infection in lupus is mentioned with the inconclusive clinical importance.
methodsWith endotoxaemia and lupus activity (Systemic Lupus Erythematosus Disease Activity Index 2000 score), 46 patients with childhood-onset lupus were categorised into active lupus with endotoxaemia (n=14), inactive lupus with endotoxaemia (n=10), active lupus without endotoxaemia (n=10) and inactive lupus without endotoxaemia (n=12). The routine parameters (serum creatinine, urine sediments, proteinuria, complement, haematological aspects and histological activity index) were analysed with lupus activity and other parameters.
resultsSerum cytokines (tumour necrosis factor (TNF)-α, interleukin (IL)-6, IL-8 and IL-10), serum citrullinated histone H3, cell-free DNA and bacterial-free DNA were not different among groups. The extracellular traps (ETs) in the peripheral blood mononuclear cell (PBMC) fraction, measured by immunofluorescence of myeloperoxidase (MPO) and neutrophil elastase (NE), were elevated in endotoxaemia regardless of lupus disease activity. Interestingly, low-density granulocytes (LDGs), the neutrophils in the PBMC fraction after gradient separation, were elevated in active lupus regardless of endotoxaemia but higher in the patients with positive endotoxaemia. Because endotoxaemia might be derived from the gut, the blood microbiome was measured, and the Burkholderia group was the representative bacteria in active lupus with endotoxaemia. The incubation of LPS or bacterial-free DNA with neutrophils from the healthy control altered these regular-density neutrophils to LDGs.
conclusionEndotoxaemia presented in both active and inactive lupus (possibly correlated with some bacterial groups in the gut) that caused ETs in the PBMC fraction and LDGs. However, elevated LDGs were most prominent in endotoxaemia with active lupus.
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