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Quantification of Citrullinated Histone H3 as a Marker for Neutrophil Extracellular Traps Correlated to Clinical Characteristics of Patients with Systemic Lupus Erythematosus.
Arch Immunol Ther Exp (Warsz)
January 2025
Department of Human Physiology, Medical University of Lublin, Lublin, Poland.
Systemic lupus erythematosus (SLE) is an autoimmune disease whose pathogenesis is not fully understood to date. One of the suggested mechanisms for its development is NETosis, which involves the release of a specific network consisting of chromatin, proteins, and enzymes from neutrophils, stimulating the immune system. One of its markers is citrullinated histone H3 (H3Cit).
View Article and Find Full Text PDFEarly neutrophil activation and NETs release in the pristane-induced lupus mice model.
PLoS One
January 2025
Laboratório de Imunologia Celular (LIM-17), Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil.
Background: NETosis is recognized as an important source of autoantigens. Therefore, we hypothesized whether the pristane-induced lupus mice model shows early activation of neutrophils, the presence of low-density granulocytes (LDGs), and neutrophil extracellular traps (NETs) release, which could contribute to the development of a lupus phenotype.
Methods: Twelve female wild-type Balb/c mice were intraperitoneally injected with pristane (n = 6; pristane group) or saline (n = 6; control group).
INCREASED CITRULLINATED HISTONE H3 LEVELS AND ACCELERATED THROMBIN KINETICS IN TRAUMA PATIENTS WHO DEVELOP VENOUS THROMBOEMBOLISM.
Shock
December 2024
Division of Trauma, Critical Care, and General Surgery, Department of Surgery, Mayo Clinic, 200 1st St. SW, Rochester, MN, United States 55905.
Background: Neutrophil extracellular traps (NETs), and its formation and release, known as NETosis, may play a role in the initiation of thrombin generation (TG) in trauma. The objective of this study was to assess whether trauma patients, who develop symptomatic venous thromboembolism (VTE), have increased levels of plasma citrullinated histone H3 (CitH3) and accelerated TG kinetics.
Methods: Patients presenting to a Level I Trauma Center as trauma activations had samples collected within 12 hours of time of injury (TOI), alongside healthy volunteers (HV).
Bovine PMN responses to extracellular vesicles released by tachyzoites and -infected host cells.
Front Immunol
January 2025
Institute of Parasitology, Justus Liebig University Giessen, Giessen, Germany.
Bovine besnoitiosis is a re-emerging cattle disease caused by the apicomplexan parasite , which severely affects individual animal welfare and profitability in cattle industry. We recently showed that tachyzoite exposure to bovine polymorphonuclear neutrophils (PMN) effectively triggers neutrophil extracellular trap (NET) formation, leading to parasite immobilization hampering host cell infection. So far, the triggers of this defense mechanism remain unclear.
View Article and Find Full Text PDFA surface protein identified from Streptococcus suis serotype 2 exhibits neutrophil-resistant ability via its polysaccharide capsule.
Microb Pathog
December 2024
MOE Joint International Research Laboratory of Animal Health and Food Safety, Nanjing Agricultural University, Nanjing 210095, PR China; College of Animal Science, Anhui Science and Technology University, Fengyang, 233100, PR China. Electronic address:
Article Synopsis
- Streptococcus suis serotype 2 (SS2) is a zoonotic bacteria that can cause serious diseases, but how it avoids the body's immune system is not well understood.
- A study identified a specific protein mutation in SS2 that leads to increased neutrophil responses, yet the mutated bacteria survive poorly in the bloodstream compared to the original strain.
- The deletion of this protein results in a weaker protective capsule and boosts the bacteria's ability to form biofilms; however, it also decreases the bacteria's survival within immune cells, highlighting potential targets for preventing infections.
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