Isolevuglandins Promote Autoimmunity And Hypertension In Systemic Lupus Erythematosus
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Hypertension, vascular inflammation and renal inflammation are characteristic of systemic lupus erythematosus (SLE), a multisystem autoimmune illness that’s complex and poorly understood. Oxidation products of arachidonic and other fatty acids, termed isolevuglandins (isoLG) result in formation of post-translational protein modifications which might be immunogenic. We demonstrate isoLG enrichment in dendritic cells (DCs), B cells, and plasma cells from juvenile female B6.SLE123 mice. In adult B6.SLE123 and NZBWF1 mice, isoLG adducts are enriched in plasma cells and splenic DCs in comparison with C57Bl/6 and NZW mice respectively. Treatment with the isoLG-scavenger 2 bromoethanol-hydroxybenzylamine (2-HOBA) lowered blood strain, improved renal function, and attenuated renal injury. Furthermore, 2-HOBA diminished bone marrow plasma cells, complete IgG levels, and anti-dsDNA antibody titers. We additionally demonstrate that mice with SLE generate specific IgG antibodies against isoLG adducted protein, confirming the immunogenicity of isoLG adducts. Finally, we discovered that isoLG adducted peptides are markedly enriched in monocytes from patients with SLE which was accompanied by a rise in superoxide production. These findings help a role of isoLG adducts in the genesis and maintenance of systemic autoimmunity and its associated hypertension in SLE. Scavenging of isoLGs promises to be a novel therapy for this illness.
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Exposure Limits CAS# 932-30-9: Personal Protective Equipment Eyes: Not accessible.
Skin:
Put on acceptable protecting gloves to prevent pores and skin publicity.
Clothes:
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