Research Articles Kidney tissue hypoxia dictates T cell-mediated injury in murine lupus nephritis

The kidney is a frequent target of autoimmune injury, including in systemic lupus erythematosus; however, how immune cells adapt to kidney’s unique environment and contribute to tissue damage is unknown. We found that renal tissue, which normally has low oxygen tension, becomes more hypoxic in lupus nephritis. In the injured mouse tissue, renal-infiltrating CD4+ and CD8+ T cells express hypoxia-inducible factor–1 (HIF-1), which alters their cellular metabolism and prevents their apoptosis in hypoxia. HIF-1–dependent gene-regulated pathways were also up-regulated in renal-infiltrating T cells in human lupus nephritis. Perturbation of these environmental adaptations by selective HIF-1 blockade inhibited infiltrating T cells and reversed tissue hypoxia and injury in murine models of lupus. The results suggest that targeting HIF-1 might be effective for treating renal injury in autoimmune diseases.
Source: Science Translational Medicine - Category: Biomedical Science Authors: Tags: Research Articles Source Type: research

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ConclusionsThis prospective study suggests exposure to air pollution can trigger renal activity in cSLE patients.
Source: Pediatric Nephrology - Category: Urology & Nephrology Source Type: research
CONCLUSION: The IL-17 rs2275913 A allele and A/A genotype were associated with high IL-17 serum levels and may contribute to susceptibility to JSLE and the development of LN in Egyptian children and adolescents. However, no significant association was evident between the studied IL-17A SNPs and other clinical phenotypes, disease activity scores or laboratory profile of JSLE. PMID: 32380889 [PubMed - as supplied by publisher]
Source: Lupus - Category: Rheumatology Authors: Tags: Lupus Source Type: research
Systemic lupus erythematosus (SLE) is a chronic systematic autoimmune disease. Current methods of diagnosing SLE or evaluating its activity are complex and expensive. Numerous studies have suggested that neutrophil-to-lymphocyte ratio (NLR) is closely correlated with the presence of SLE and its activity, suggesting that it may serve as a diagnostic and monitoring indicator for SLE. Therefore, we performed a meta-analysis to systematically assess the association between NLR and SLE. We performed a literature search until 12 April 2019 in the PubMed, Web of Science, and China National Knowledge Infrastructure databases. Cros...
Source: Clinics - Category: General Medicine Source Type: research
Increased leucine-rich α2-glycoprotein-1 (LRG1) has been observed in various inflammatory and autoimmune diseases. We aimed to explore the expression and role of LRG1 in lupus nephritis (LN).
Source: BMC Nephrology - Category: Urology & Nephrology Authors: Tags: Research article Source Type: research
Abstract Although STAT1 tyrosine-701 phosphorylation (designated STAT1-pY701) is indispensable for STAT1 function, the requirement for STAT1 serine-727 phosphorylation (designated STAT1-pS727) during systemic autoimmune and antipathogen responses remains unclear. Using autoimmune-prone B6.Sle1b mice expressing a STAT1-S727A mutant in which serine is replaced by alanine, we report in this study that STAT1-pS727 promotes autoimmune Ab-forming cell (AFC) and germinal center (GC) responses, driving autoantibody production and systemic lupus erythematosus (SLE) development. In contrast, STAT1-pS727 is not required for ...
Source: Journal of Immunology - Category: Allergy & Immunology Authors: Tags: J Immunol Source Type: research
Authors: Sharma M, Vignesh P, Tiewsoh K, Rawat A Abstract Introduction: Systemic lupus erythematosus (SLE) is an autoimmune disease involving multiple organ systems, characterized by the production of autoantibodies. Numerous mechanisms contribute to the pathogenesis and development of autoantibodies and autoimmunity in SLE. One of the most important mechanisms is the defective function of the early complement components that are involved in clearing the immune-complexes and apoptotic debris. Major evidence supporting this hypothesis is the development of severe forms of lupus in individuals with monogenic defects ...
Source: Expert Review of Clinical Immunology - Category: Allergy & Immunology Tags: Expert Rev Clin Immunol Source Type: research
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Source: Medicine - Category: Internal Medicine Tags: Research Article: Clinical Case Report Source Type: research
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Source: International Immunopharmacology - Category: Allergy & Immunology Authors: Tags: Int Immunopharmacol Source Type: research
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Source: Immunity, Inflammation and Disease - Category: Allergy & Immunology Authors: Tags: ORIGINAL RESEARCH Source Type: research
Abstract Systemic lupus erythematosus (SLE) is a chronic autoimmune disease characterized by multiple system involvement and positive serum autoantibodies. Lupus nephritis (LN) is the most common and serious complication of SLE, and it is the main cause of death in patients with SLE. Abnormalities in the immune system lead to LN and involve a variety of cells (T cells, B cells, macrophages, NK cells, etc.), cytokines (interleukin, tumor necrosis factor α, etc.) and their related pathways. Previous studies have shown that the interactions of genetic, epigenetic and environmental factors contribute to the path...
Source: Clinical Immunology - Category: Allergy & Immunology Authors: Tags: Clin Immunol Source Type: research
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