scholarly journals Exposure of HEp-2 Cells to Stress Conditions Influences Antinuclear Antibody Reactivity

2002 ◽  
Vol 9 (2) ◽  
pp. 287-294 ◽  
Author(s):  
Liping Du ◽  
Sachiko Fukushima ◽  
Annahita Sallmyr ◽  
Rolf Manthorpe ◽  
Anders Bredberg
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Dna Damage ◽  
Lupus Erythematosus ◽  
Antinuclear Antibody ◽  
Nuclear Protein ◽  
Optimal Conditions ◽  
Healthy Individuals ◽  
Systemic Lupus ◽  
Lower Reactivity ◽  
Stressed Cells

ABSTRACT This study of stress-related antinuclear antibody (ANA) reactivity was undertaken with the objective of improving clinical ANA testing. ANA was determined by parallel enzyme-linked immunosorbent assays of crude nuclear protein antigen extracted from HEp-2 cells either grown under optimal conditions (providing nonstress ANA antigen) or exposed to stress (providing stress ANA antigen). The stress stimuli used were gamma radiation (causing DNA damage) and a hypertonic environment (causing apoptosis). Signs of stress-related ANA reactivity were seen among connective tissue disease (CTD) patients (including patients with systemic lupus erythematosus; mixed CTD; calcinosis, Reynaud's phenomenon, esophageal motility disorders, sclerodactyly, and telangiectasia; scleroderma; and Sjögren's syndrome): 11% showed stress-positive ANA (i.e., a significantly stronger ANA reactivity with the extract from stressed cells), whereas 21% showed a markedly weaker reaction with the stress antigen. In contrast, among ANA screening patient sera, with no diagnosis of CTD, the fraction showing stress-positive ANA was higher (7 to 8%, depending on the type of stress) than among those showing a lower reactivity with stress antigen (1.5 to 2.5%). Only one serum among 89 (1%) tested sera from healthy individuals showed a stress-related ANA reaction. This demonstration of stress-related ANA suggests a means to improve the performance of clinical ANA testing.

scholarly journals Serum levels and gene polymorphisms of angiopoietin 2 in systemic lupus erythematosus patients

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jia-Min Wang ◽  
Wang-Dong Xu ◽  
Zhi-Chao Yuan ◽  
Qian Wu ◽  
Jie Zhou ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Autoimmune Diseases ◽  
Lupus Erythematosus ◽  
Gene Polymorphisms ◽  
Serum Levels ◽  
Healthy Individuals ◽  
Systemic Lupus ◽  
Potential Biomarker ◽  
Angiopoietin 2 ◽  
Inflammatory Autoimmune Diseases

AbstractThis study aimed to discuss association between serum Angiopoietin2 (Ang2) levels, Ang2 gene polymorphisms and systemic lupus erythematosus (SLE) susceptibility. It was carried out by 235 SLE, 342 other inflammatory autoimmune diseases patients and 380 healthy individuals. Serum Ang2 levels was examinated by ELISA, and Ang2 rs12674822, rs1823375, rs1868554, rs2442598, rs3739390 and rs734701 polymorphisms were genotyped using KASP. Increased Ang2 concentrations in SLE patients were observed compared with healthy controls and patients with other inflammatory autoimmune diseases. For allelic contrast, except for rs1823375 (P = 0.058) and rs2442598 (P = 0.523), frequencies of alleles for other polymorphisms were significantly different between SLE patients and controls. Genotypes for rs12674822 (TT), rs1868554 (TT, TA and TT+TA), rs734701 (TT) were negatively correlated with SLE susceptibility (OR = 0.564 for rs12674822; OR = 0.572, OR = 0.625, OR = 0.607 for rs1868554; OR = 0.580 for rs734701). Patients carrying rs1868554 T allele and rs3739390 G allele were more likely to develop hematuria (P = 0.039; P = 0.003). The G allele frequencies of rs12674822 and rs2442598 were higher in SLE patients with proteinuria (P = 0.043; P = 0.043). GC genotype frequency of rs3739390 was higher in patients with ds-DNA (+) (P = 0.024). In summary, SLE had increased serum Ang2, which may be a potential biomarker, and the polymorphisms correlated with SLE.

scholarly journals Mitochondrial DNA damage is associated with damage accrual and disease duration in patients with Systemic Lupus Erythematosus

Lupus ◽  
2014 ◽  
Vol 23 (11) ◽  
pp. 1133-1141 ◽  
Author(s):  
L López-López ◽  
M Nieves-Plaza ◽  
M del R Castro ◽  
YM Font ◽  
CA Torres-Ramos ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Dna Damage ◽  
Mitochondrial Dna ◽  
Lupus Erythematosus ◽  
Disease Duration ◽  
Systemic Lupus ◽  
Mitochondrial Dna Damage ◽  
Damage Accrual

Increased Serum Soluble OX40 in Patients with Systemic Sclerosis

2008 ◽  
Vol 35 (12) ◽  
pp. 2359-2362 ◽  
Author(s):  
KAZUHIRO KOMURA ◽  
AYUMI YOSHIZAKI ◽  
MASANARI KODERA ◽  
YOHEI IWATA ◽  
FUMIHIDE OGAWA ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Systemic Sclerosis ◽  
Lupus Erythematosus ◽  
Tumor Necrosis ◽  
Disease Duration ◽  
Tumor Necrosis Factor Receptor ◽  
Healthy Individuals ◽  
Systemic Lupus ◽  
Clinical Associations ◽  
Necrosis Factor

ObjectiveTo determine levels of serum soluble OX40 (also termed CD134, a member of the tumor necrosis factor receptor superfamily) and their clinical associations in patients with systemic sclerosis (SSc).MethodsSerum soluble OX40 levels were examined by ELISA in 53 patients with SSc, 15 patients with systemic lupus erythematosus (SLE), and 32 healthy individuals.ResultsOX40 levels were significantly elevated in SSc patients (125.7 ± 5.7 pg/ml) compared to patients with SLE (80.7 ± 1.7 pg/ml; p < 0.005) and controls (88.2 ± 3.0 pg/ml; p < 0.0001). Elevated OX40 levels were found to be associated with disease duration of less than 2 years (p < 0.05).ConclusionOur results suggest that serum soluble OX40 levels correlate with the early-onset of SSc disease.

HLA-G 3′ Untranslated Region Polymorphisms Are Associated with Systemic Lupus Erythematosus in 2 Brazilian Populations

2013 ◽  
Vol 40 (7) ◽  
pp. 1104-1113 ◽  
Author(s):  
Norma Lucena-Silva ◽  
Veridiana Sales Barbosa de Souza ◽  
Renan Garcia Gomes ◽  
Alex Fantinatti ◽  
Yara Costa Netto Muniz ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Lupus Erythematosus ◽  
Messenger Rna ◽  
Untranslated Region ◽  
Logistic Regression Model ◽  
Multiple Logistic Regression ◽  
Bonferroni Correction ◽  
Healthy Individuals ◽  
Systemic Lupus ◽  
Brazilian Populations

Objective.HLA-G has well recognized tolerogenic properties in physiological and nonphysiological conditions. The 3′ untranslated region (3′UTR) of theHLA-Ggene has at least 3 polymorphic sites (14-bpINS/DEL, +3142C/G, and +3196C/G) described as associated with posttranscriptional influence on messenger RNA production; however, only the 14-bpINS/DEL and +3142C/G sites have been studied in systemic lupus erythematosus (SLE).Methods.We investigated theHLA-G3′UTR polymorphic sites (14-bpINS/DEL, +3003C/T, +3010C/G, +3027A/C, +3035C/T, +3142C/G, +3187A/G, and +3196C/G) in 190 Brazilian patients with SLE and 282 healthy individuals in allele, genotype, and haplotype analyses. A multiple logistic regression model was used to assess the association of the disease features with theHLA-G3′UTR haplotypes.Results.Increased frequencies were observed of the 14-bpINS (p = 0.053), +3010C (p = 0.008), +3142G (p = 0.006), and +3187A (p = 0.013) alleles, and increased frequencies of the 14-bpINS-INS (p = 0.094), +3010 C-C (p = 0.033), +3142 G-G (p = 0.021), and +3187 A-A (p = 0.035) genotypes. After Bonferroni correction, only the +3142G (p = 0.05) and +3010C (p = 0.06) alleles were overrepresented in SLE patients. The UTR-1 haplotype (14-bpDEL/+3003T/+3010G/+3027C/+3035C/+3142C/+3187G/+3196C) was underrepresented in SLE (pcorr= 0.035).Conclusion.These results indicate thatHLA-G3′UTR polymorphic sites, particularly +3142G and +3010C alleles, were associated with SLE susceptibility, whereas UTR-1 was associated with protection against development of SLE.

scholarly journals Antinuclear Antibody–Negative Systemic Lupus Erythematosus in an International Inception Cohort

2019 ◽  
Vol 71 (7) ◽  
pp. 893-902 ◽  
Author(s):  
May Y. Choi ◽  
Ann E. Clarke ◽  
Yvan St. Pierre ◽  
John G. Hanly ◽  
Murray B. Urowitz ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Lupus Erythematosus ◽  
Antinuclear Antibody ◽  
Inception Cohort ◽  
Systemic Lupus
Sign in / Sign up

Export Citation Format

Share Document