Early neutrophil activation and NETs release in the pristane-induced lupus mice model.

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).

CD4CD69 T cells and CD4CD25FoxP3 Treg cells imbalance in peripheral blood, spleen and peritoneal lavage from pristane-induced systemic lupus erythematosus (SLE) mice.

Background: Adaptive immune cells, including CD4CD69 and CD4CD25FoxP3 regulatory T (Treg) cells, are important for maintaining immunological tolerance. In human systemic lupus erythematosus (SLE), CD4CD25FoxP3 Treg cells are reduced, whereas CD69 expression is increased, resulting in a homeostatic immune imbalance that may intensify autoreactive T cell activity. To analyze the mechanisms implicated in autotolerance failure, we evaluated CD4CD69 and CD4CD25FoxP3 T cells and interleukin profiles in a pristane-induced SLE experimental model.