scholarly journals Selective suppression of retroviral gp70-anti-gp70 immune complex formation by prostaglandin E1 in murine systemic lupus erythematosus.

1980 ◽  
Vol 152 (6) ◽  
pp. 1645-1658 ◽  
Author(s):  
S Izui ◽  
V E Kelley ◽  
P J McConahey ◽  
F J Dixon
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Immune Complex ◽  
Lupus Erythematosus ◽  
Prostaglandin E1 ◽  
Systemic Lupus ◽  
Murine Systemic Lupus Erythematosus ◽  
Dna Antibodies ◽  
Total Concentrations ◽  
Immune Complex Formation

The effect of pharmacologic quantities of prostaglandin E1 (PGE) was investigated in three strains of mice (NZB X NZW, MRL/1, and BXSB) that spontaneously develop lupus-like glomerulonephritis. PGE-treatment prolonged survival and retarded the glomerular deposition of immune complex (IC) and the development of glomerulonephritis in NZB X NZW and MRL/1 mice, but did not similarly protect BXSB mice. Changes in the responsive strains correlated well with reduced amounts of circulating gp70 complexed with anti-gp70 antibodies compared with untreated controls, although total concentrations of gp70 (free and complexed) detectable in sera were similar in both groups of mice. The results strongly suggest that: (a) PGE selectively suppressed the immune response to retroviral gp70, (b) PGe had little effect on the quantity or quality of anti-DNA antibodies but did reduce the deposition of anti-DNA containing IC in the kidneys, and (c) gp70 IC appear to play an important role in the pathogenesis of glomerulonephritis in murine systemic lupus erythematosus.

scholarly journals Regional Brain Metabolism in a Murine Systemic Lupus Erythematosus Model

2014 ◽  
Vol 34 (8) ◽  
pp. 1315-1320 ◽  
Author(s):  
An Vo ◽  
Bruce T Volpe ◽  
Chris C Tang ◽  
Wynne K Schiffer ◽  
Czeslawa Kowal ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Lupus Erythematosus ◽  
Memory Impairment ◽  
Brain Metabolism ◽  
Imaging Data ◽  
Systemic Lupus ◽  
Murine Systemic Lupus Erythematosus ◽  
Dna Antibodies ◽  
Time Courses ◽  
Regional Metabolism

Systemic lupus erythematosus (SLE) is characterized by multiorgan inflammation, neuropsychiatric disorders (NPSLE), and anti-nuclear antibodies. We previously identified a subset of anti-DNA antibodies (DNRAb) cross-reactive with the N-methyl-D-aspartate receptor, present in 30% to 40% of patients, able to enhance excitatory post-synaptic potentials and trigger neuronal apoptosis. DNRAb + mice exhibit memory impairment or altered fear response, depending on whether the antibody penetrates the hippocampus or amygdala. Here, we used 18F-fluorodeoxyglucose (FDG) microPET to plot changes in brain metabolism after regional blood-brain barrier (BBB) breach. In DNRAb + mice, metabolism declined at the site of BBB breach in the first 2 weeks and increased over the next 2 weeks. In contrast, DNRAb — mice exhibited metabolic increases in these regions over the 4 weeks after the insult. Memory impairment was present in DNRAb + animals with hippocampal BBB breach and altered fear conditioning in DNRAb + mice with amygdala BBB breach. In DNRAb + mice, we observed an inverse relationship between neuron number and regional metabolism, while a positive correlation was observed in DNRAb — mice. These findings suggest that local metabolic alterations in this model take place through different mechanisms with distinct time courses, with important implications for the interpretation of imaging data in SLE subjects.

scholarly journals Antibody against envelope protein from human endogenous retrovirus activates neutrophils in systemic lupus erythematosus

2019 ◽  
Author(s):  
Maria Tokuyama ◽  
Bronwyn M. Gunn ◽  
Arvind Venkataraman ◽  
Yong Kong ◽  
Insoo Kang ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Complex Formation ◽  
Immune Complex ◽  
Lupus Erythematosus ◽  
Envelope Protein ◽  
Endogenous Retrovirus ◽  
Neutrophil Activation ◽  
Systemic Lupus ◽  
Interferon Signature ◽  
Immune Complex Formation

AbstractNeutrophil activation and the formation of neutrophil extracellular trap (NET) are hallmarks of innate immune activation in systemic lupus erythematosus (SLE) and contribute to the systemic interferon signature. Here we report that the expression of an endogenous retrovirus (ERV) locus ERV-K102, encoding an envelope protein, was significantly elevated in SLE patient blood and was correlated with higher interferon status. Induction of ERV-K102 expression most strongly correlated with reduced transcript levels of epigenetic silencing factors. SLE IgG promoted phagocytosis of ERV-K102 envelope protein by neutrophils through immune complex formation. ERV immune complex phagocytosis resulted in subsequent NET formation consisting of DNA, neutrophil elastase, and citrullinated histone H3. Finally, analysis of anti-ERV-K102 IgG in SLE patients showed that IgG2 likely mediates this effect. Together, we identified an immunostimulatory ERV-K envelope protein elevated in SLE that may be a target of SLE IgG and able to promote neutrophil activation.eTOC summaryUsing ERVmap, the authors determined that the expression of ERV-K102 locus was elevated in SLE patient blood and correlated with the interferon signature. The envelope protein encoded by this locus activates human neutrophils through immune complex formation with SLE IgG.

scholarly journals Antibodies against human endogenous retrovirus K102 envelope activate neutrophils in systemic lupus erythematosus

2021 ◽  
Vol 218 (7) ◽  
Author(s):  
Maria Tokuyama ◽  
Bronwyn M. Gunn ◽  
Arvind Venkataraman ◽  
Yong Kong ◽  
Insoo Kang ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Immune Complex ◽  
Lupus Erythematosus ◽  
Envelope Protein ◽  
Endogenous Retrovirus ◽  
Innate Immune ◽  
Human Endogenous Retrovirus ◽  
Systemic Lupus ◽  
Extracellular Traps ◽  
Immune Complex Formation

Neutrophil activation and the formation of neutrophil extracellular traps (NETs) are hallmarks of innate immune activation in systemic lupus erythematosus (SLE). Here we report that the expression of an endogenous retrovirus (ERV) locus ERV-K102, encoding an envelope protein, was significantly elevated in SLE patient blood and correlated with autoantibody levels and higher interferon status. Induction of ERV-K102 in SLE negatively correlated with the expression of epigenetic silencing factors. Anti-ERV-K102 IgG levels in SLE plasma correlated with higher interferon stimulated gene expression, and further promoted enhanced neutrophil phagocytosis of ERV-K102 envelope protein through immune complex formation. Finally, phagocytosis of ERV-K102 immune complexes resulted in the formation of NETs consisting of DNA, neutrophil elastase, and citrullinated histone H3. Together, we identified an immunostimulatory ERV-K envelope protein that in an immune complex with SLE IgG is capable of activating neutrophils.

Assessment of Quality of Life (QoL) in Systemic Lupus Erythematosus Patients at a Tertiary Care Hospital in Egypt

2019 ◽  
Vol 15 (4) ◽  
pp. 304-311
Author(s):  
Mervat E. Behiry ◽  
Sahar A. Ahmed ◽  
Eman H. Elsebaie
Keyword(s):  
Quality Of Life ◽  
Systemic Lupus Erythematosus ◽  
Disease Activity ◽  
Lupus Erythematosus ◽  
Tertiary Care ◽  
Damage Index ◽  
Life Questionnaire ◽  
Care Hospital ◽  
Systemic Lupus

: Systemic Lupus Erythematosus (SLE) has a profound impact on quality of life. Objective: The objective of this study was to explore the quality of life among Egyptian SLE patients and to assess its relationships with demographic and clinical features. Methods: One hundred sixty-four SLE patients were recruited for this study. Demographic information; clinical parameters; disease activity, as evaluated by the systemic lupus erythematosus Disease Activity Index; and organ damage, as assessed by the systemic lupus international Collaborative Clinics/American College of Rheumatology Damage Index, were reported. Quality of life was assessed with a quality of life questionnaire specifically designed for patients with systemic lupus erythematosus; the questions are grouped in the following six domains: physical function, sociooccupational activities, symptoms, treatment, mood, and self-image. Higher values indicate poorer quality of life. Conclusion: Poor quality of life among Egyptian SLE patients and disease activity are strongly related to impaired lifestyles in these patients.

scholarly journals Impact of depression on quality of life in systemic lupus erythematosus patients

2021 ◽  
Vol 57 (1) ◽  
Author(s):  
Eman M. Khedr ◽  
Rania M. Gamal ◽  
Sounia M. Rashad ◽  
Mary Yacoub ◽  
Gellan K. Ahmed
Keyword(s):  
Quality Of Life ◽  
Systemic Lupus Erythematosus ◽  
Lupus Erythematosus ◽  
Short Form ◽  
Systemic Lupus ◽  
Positive Correlation ◽  
Depressed Patients ◽  
Sf 36 ◽  
The Impact

Abstract Background Depression is common in systemic lupus erythematosus (SLE) and is an unmeasured risk factor, yet its symptoms can be neglected in standard disease evaluations. The purpose of this study was to assess the frequency and the impact of depression on quality of life in SLE patients. We recruited 32 patients with SLE and 15 healthy control volunteers in the study. The following investigations were undertaken in each patient: clinical and rheumatologic assessment, SLE Disease Activity Index-2k (SLEDAI-2k), Beck Depression Inventory (BDI), Short-Form Health Survey (SF-36) questionnaire, and routine laboratory tests. Results There was a high percentage of depression (46.9%) in the SLE patients. Regarding quality of life (SF-36), there were significant affection of the physical and mental composite summary domains (PCS and MCS) scores in lupus patients compared with controls (P < 0.000 for both) with the same significant in depressed compared with non-depressed patients. SF-36 subscales (physical function, limit emotional, emotional wellbeing, and social function) were significantly affected in depressed lupus patients compared with non-depressed patients. There was a significant negative correlation between the score of MCS domain of SF-36 with BDI (P < 0.000) while positive correlation between SLEDAI score with depression score. In contrast, there were no significant correlations between MCS or PCS with age, duration of illness, or SLEDAI-2K. Conclusions Depression is common in SLE patients and had a negative impact on quality of life particularly on MCS domain and positive correlation with disease severity score. Trial registration This study was registered on clinical trial with registration number: NCT03165682 https://clinicaltrials.gov/ct2/show/NCT03165682 on 24 May 2017.

scholarly journals A Comparison of the Correlation of Systemic Lupus Erythematosus Disease Activity Index 2000 (SLEDAI-2K) and Systemic Lupus Erythematosus Disease Activity Score (SLE-DAS) with Health-Related Quality of Life

2021 ◽  
Vol 10 (10) ◽  
pp. 2137
Author(s):  
Ning-Sheng Lai ◽  
Ming-Chi Lu ◽  
Hsiu-Hua Chang ◽  
Hui-Chin Lo ◽  
Chia-Wen Hsu ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Systemic Lupus Erythematosus ◽  
Disease Activity ◽  
Lupus Erythematosus ◽  
Activity Index ◽  
Disease Activity Index ◽  
Information Criterion ◽  
Systemic Lupus Erythematosus Disease ◽  
Systemic Lupus

Background and Aim: The aim of this study was to compare the correlation of a recently developed systemic lupus erythematosus disease activity score (SLE-DAS) with the SLE disease activity index 2000 (SLEDAI-2K) with the Lupus Quality of Life questionnaire (LupusQoL) in Taiwanese patients with SLE. Methods: A cross-sectional study was conducted in a regional teaching hospital in Taiwan from April to August 2019. Adult patients with a clinician-confirmed diagnosis of SLE based on the 1997 American College of Rheumatology revised criteria or the 2012 Systemic Lupus International Collaborating Clinics Classification Criteria were recruited. SLE disease activity was measured with both SLEDAI-2K and SLE-DAS. Disease-specific quality of life was assessed using the LupusQoL. Results: Of the 333 patients with SLE in this study, 90.4% were female and 40% were between the ages of 20 and 39 years. The median SLEDAI-2K score was 4.00 (interquartile range [IQR] 2.00–7.50) and the median SLE-DAS score was 2.08 (IQR 1.12–8.24) in our patients with SLE. After adjusting for sex and age intervals, both SLEDAI-2k and SLE-DAS were significantly and inversely associated with all eight domains of LupusQoL. The magnitudes of the mean absolute error, root mean square error, Akaike Information Criterion, Bayesian Information Criterion, and coefficient of determination were comparable between SLEDAI-2K and SLE-DAS. Conclusions: There were no clear differences in the use of SLE-DAS over SLEDAI-2K in assessing HRQoL in patients with SLE. We suggest that, in this aspect, both SLEDAI-2K and SLE-DAS are effective tools for measuring disease activity in patients with SLE.

Sign in / Sign up

Export Citation Format

Share Document