scholarly journals Validity test of anti-c1q serum as diagnostic marker for lupus nephritis

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
M Enrica ◽  
A Tjandrawati ◽  
S Rachmayati ◽  
Laniyati Hamijoyo
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Lupus Nephritis ◽  
Lupus Erythematosus ◽  
Predictive Value ◽  
Renal Involvement ◽  
Enzyme Linked Immunosorbent Assay ◽  
Specific Marker ◽  
Systemic Lupus ◽  
Urine Protein ◽  
American College Of Rheumatology

Background: Lupus nephritis is defined as renal involvement in systemic lupus erythematosus (SLE) patients and the most important cause of morbidity and mortality. The diagnostic criteria that used to diagnose lupus nephritis are 1997 American Collegeof Rheumatology is 24 hours urine protein ≥500 mg and/or cellular cast, but significant renal damage can occur without proteinuria or cellular cast. Anti-C1q is an autoantibody that is produced by a chronic alteration of C1q collagen domain. Anti-C1q is a new specific marker for renal marker.Objective: To determine the validity of anti-C1q serum by using 1997 American College of Rheumatology criteria as a gold standard. Methods: This is a cross sectional study, conducted in October to December 2014 at Hasan Sadikin Hospital Bandung. The subjects had systemic lupus erythematosus with and without renal involvement, based on 1997 American College of Rheumatology criteria for SLE.Results: There were 65 subjects included in this study, 64 subjects were female and 1 subject was male. The age average was 32 (SD 11.7) years old. As many as 66.2% subjects had been diagnosed with lupus erythematosus systemic at least 3 years. Twenty four hours urine protein was measured using spectrophotometry, urine sediment was examinedfor cellular cast, and anti-C1q serum was measured using micro enzyme linked immunosorbent assay. Based on American College of Rheumatology criteria, 34 subjects were classified as lupus nephritis group while 31 subjects were classified as non-lupus nephritis group. The area under the curve of anti-C1q was 0.610. The cut-off value used in this study was 10.43 U/ml. The sensitivity, specificity, positive predictive value,negative predictive value and accuracy of anti-C1q assay were 41.18%, 77.42%, 66.67%, 54.55% and 58.46% respectively.Conclusion: Anti-C1q assay, based on this study, hasa low sensitivity and medium specificity to detect lupusnephritis

scholarly journals Anti-Double-Stranded DNA Isotypes and Anti-C1q Antibody Improve the Diagnostic Specificity of Systemic Lupus Erythematosus

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Yu Jia ◽  
Lingling Zhao ◽  
Chunyan Wang ◽  
Jin Shang ◽  
Yi Miao ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Lupus Nephritis ◽  
Disease Activity ◽  
Lupus Erythematosus ◽  
Activity Index ◽  
Renal Involvement ◽  
Enzyme Linked Immunosorbent Assay ◽  
Diagnostic Specificity ◽  
Systemic Lupus ◽  
Double Stranded Dna

Objectives. We aimed to evaluate the value of immunoglobulin (Ig) G, IgM, and IgA isotypes of anti-double-stranded DNA (anti-dsDNA) and anti-C1q antibody in diagnosing systemic lupus erythematosus (SLE) patients and elucidate their association with disease activity and lupus nephritis. Methods. Blood samples were obtained from 96 SLE patients, 62 other autoimmune disease patients, and 60 healthy blood donors. Anti-dsDNA IgG, IgM, and IgA isotypes and anti-C1q antibody were measured by enzyme-linked immunosorbent assay. Disease activity of SLE patients was assessed according to the SLE Disease Activity Index score. Results. When specificity was greater than 90%, the sensitivity of anti-dsDNA IgG, IgM, and IgA isotypes and anti-C1q antibody in diagnosing SLE was 75%, 45%, 33%, and 49%, respectively. The prevalence of anti-dsDNA IgG (p=0.002), anti-dsDNA IgA (p=0.028), and anti-C1q antibody (p=0.000) in active cases was significantly higher than those in inactive ones. In addition, the presence of anti-C1q antibody was associated with renal involvement (p=0.032). Anti-dsDNA IgM showed no significant association with disease activity, but it was inversely linked with lupus nephritis (p=0.005). When anti-dsDNA IgG and IgA and anti-C1q were combined to evaluate SLE disease activity, the specificity reached the highest level (90%). When anti-C1q positive was accompanied by anti-dsDNA IgM negative, the specificity of diagnosing lupus nephritis was up to 96%. Conclusions. This study demonstrated the role of anti-dsDNA IgG, IgM, and IgA isotypes and anti-C1q antibody alone or combination in diagnosing SLE. Anti-dsDNA IgG and IgA and anti-C1q were shown to be associated with disease activity, while anti-dsDNA IgM and anti-C1q were associated with lupus nephritis. When the related antibodies were combined, the diagnostic specificity was significantly higher.

Serum level of anti-α-enolase antibody in untreated systemic lupus erythematosus patients correlates with 24-hour urine protein and D-dimer

Lupus ◽  
2017 ◽  
Vol 27 (1) ◽  
pp. 139-142 ◽  
Author(s):  
M Li ◽  
J Li ◽  
J Wang ◽  
Y Li ◽  
P Yang
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Lupus Erythematosus ◽  
Renal Involvement ◽  
Serum Levels ◽  
Enzyme Linked Immunosorbent Assay ◽  
Healthy Controls ◽  
Systemic Lupus ◽  
Urine Protein ◽  
Laboratory Procedure ◽  
D Dimer

Objective The objective of this report is to evaluate the prevalence and clinico-serological correlations of anti-α-enolase antibody (Ab) in patients with systemic lupus erythematosus (SLE). Methods Thirty-two untreated patients with SLE and 20 age- and sex-matched healthy controls were evaluated by rheumatologic examinations. The serum levels of anti-α-enolase Ab were measured by an enzyme-linked immunosorbent assay (ELISA). Clinical, biochemical and serological markers of disease activity were measured by standard laboratory procedure. Results The serum levels of anti-α-enolase Ab in SLE patients were higher significantly than those in healthy controls. Moreover, patients with lupus nephritis displayed significantly higher levels of serum anti-α-enolase Ab than those without renal involvement. The serum anti-α-enolase Ab levels were positively correlated with serum whole IgG and 24-hour urine protein and negatively correlated with serum D-dimer level. Conclusion These data suggest that anti-α-enolase Ab associates with active renal disease in SLE and might reflect a state of active autoimmunity and fibrinolysis inhibition.

scholarly journals Vaso-occlusive retinopathy and stage IV Lupus Nephritis; Primary manifestation of a 30 year old female

2018 ◽  
Vol 29 (1) ◽  
pp. 36-40
Author(s):  
Tasnuva Saiful ◽  
Quadrat E Elahi ◽  
Mamun Mostafi ◽  
Abdul Ali Mia
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Lupus Nephritis ◽  
Lupus Erythematosus ◽  
Retinal Vasculitis ◽  
Stage Iv ◽  
High Titre ◽  
Ocular Involvement ◽  
Systemic Lupus ◽  
American College Of Rheumatology ◽  
Finger Counting

The diagnosis of systemic lupus erythematosus (SLE) depends on clinical evidence of renal, rheumatologic, cutaneous, and neurologic involvement, supported by serological markers. Ocular involvement is not included in diagnostic criteria of SLE. Vaso-occlusive retinopathy, as the primary manifestation of systemic lupus erythematosus (SLE), is relatively rare. We report a 30-year-old female, who suddenly suffered bilateral visual loss. Fundus examination revealed bilateral occlusive retinal vasculitis. She fulfilled the American College of Rheumatology criteria for diagnosing SLE; she had arthralgia, photosensitivity, positive ANA, high titre of anti-dsDNA, and proteinuria. A renal biopsy showed stage IV lupus nephritis. Treatment was initiated with pulse steroid and immunosuppressant. Best corrected visual acuity of both eye improved to finger counting after treatment. This case demonstrates that in patients with severe vaso-occlusive retinopathy, a generalized immunological disorder, like SLE, should be suspected.Bangladesh J Medicine Jan 2018; 29(1) : 36-40

scholarly journals An uncommon cause of diffuse alveolar hemorrhage in a young male

2019 ◽  
Vol 89 (2) ◽  
Author(s):  
Anshul Mittal ◽  
Jagdish Chander Suri ◽  
Shibdas Chakrabarti ◽  
Pranav Ish
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Lupus Nephritis ◽  
Lupus Erythematosus ◽  
Renal Involvement ◽  
Young Male ◽  
Diffuse Alveolar Hemorrhage ◽  
Alveolar Hemorrhage ◽  
Systemic Lupus ◽  
Threatening Condition ◽  
Life Threatening

It is uncommon for Systemic lupus erythematosus (SLE) to present with diffuse alveolar hemorrhage (DAH) as the initial presentation. To diagnose this in a young male with no renal involvement is further uncommon. We report a case of a 16-year-old boy, who presented with hemoptysis and was eventually diagnosed as DAH with underlying SLE. Treatment with steroids and immunosuppressant helped in rapid recovery from this potentially life-threatening condition. This case highlights the need of defining diagnostic criteria for SLE in patients presenting as DAH and formulating guidelines for treatment of the same, especially in absence of co-existing lupus nephritis.

scholarly journals Comparative analysis of neutrophil gelatinase-associated lipocalin and other laboratory markers for lupus nephritis: a cross-sectional investigation

2016 ◽  
Vol 54 (2) ◽  
pp. 240-245 ◽  
Author(s):  
Sonia L La’ulu ◽  
Brenda B Suh-Lailam ◽  
K Wayne Davis ◽  
Joely A Straseski ◽  
Anne E Tebo
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Lupus Nephritis ◽  
Lupus Erythematosus ◽  
Renal Involvement ◽  
Immunofluorescence Assay ◽  
Igg Antibodies ◽  
Systemic Lupus ◽  
Neutrophil Gelatinase Associated Lipocalin ◽  
Double Stranded Dna ◽  
Neutrophil Gelatinase

Background Lupus nephritis is one of the most serious complications of systemic lupus erythematosus. This study evaluates the prevalence and correlation between neutrophil gelatinase-associated lipocalin and other biomarkers associated with renal involvement in systemic lupus erythematosus. Methods Paired serum and urine specimens from 50 suspected systemic lupus erythematosus patients, characterized by antinuclear antibodies detected by indirect immunofluorescence assay and varying positive concentrations of anti-double stranded DNA antibodies by Crithidia luciliae immunofluorescence assay, were investigated. Of these 50 patients, 18 were identified with renal involvement based upon laboratory serology. Patients and healthy control serum samples ( n = 50) were also evaluated for high avidity double stranded DNA IgG antibodies, anti-C1q IgG antibodies, and serum creatinine. The prevalence and relationship between biomarkers were evaluated using statistical methods. Results Serum and urine neutrophil gelatinase-associated lipocalin concentrations were significantly elevated in patients compared to controls, with a prevalence of 24% and 36%, respectively. These concentrations were also more markedly increased in systemic lupus erythematosus patients with renal involvement than those without. Spearman’s correlations between neutrophil gelatinase-associated lipocalin and other biomarkers tested ranged from 0.06 to 0.66 in all patients. Combined concordance as determined by Cronbach alpha coefficient between biomarkers was reduced from 0.71 to 0.58 (serum) and 0.62 (urine) when neutrophil gelatinase-associated lipocalin was removed. Conclusions Neutrophil gelatinase-associated lipocalin concentrations are elevated and demonstrate variable associated with other laboratory markers for renal involvement in systemic lupus erythematosus. Prospective longitudinal studies are needed to determine the optimal biomarker combinations for use in routine management of systemic lupus erythematosus patients at-risk for lupus nephritis.

scholarly journals Variable presentations of systemic lupus erythematosus based on presence or absence of antidouble stranded DNA antibodies: A case series

2022 ◽  
Vol 13 (1) ◽  
pp. 175-179
Author(s):  
Somnath Maitra ◽  
Swapan Sarkar ◽  
Biswaroop Mukherjee ◽  
Suprotim Ghosh
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Clinical Features ◽  
Lupus Erythematosus ◽  
Renal Involvement ◽  
Case Series ◽  
Systemic Lupus ◽  
American College Of Rheumatology ◽  
European League Against Rheumatism ◽  
Dna Antibodies ◽  
European League

Systemic lupus erythematosus (SLE) presents with diverse clinical features causing diagnostic challenges. Apart from the clinical features, autoantibodies are important for diagnosis along with certain laboratory parameters. Diagnosis is made with the European League against Rheumatism/American College of Rheumatology 2019 Criteria. The case series presented here signifies the correlation between anti ds DNA positivity and its association with poor prognosis and renal disease, whereas antidouble stranded DNA (anti-dsDNA) negativity may lead to lack of renal involvement and may be associated with polyserositis. The importance lies in the fact that these patients with anti-dsDNA negativity should be followed up for assessing conversion to positivity of anti-dsDNA, thus altering the prognosis and leading to renal involvement. Moreover, anti-SSA positive SLE patients must be followed up for possible development of sicca symptoms.

scholarly journals Plasma cytokines as potential biomarkers of kidney damage in patients with systemic lupus erythematosus

Lupus ◽  
2018 ◽  
Vol 28 (1) ◽  
pp. 34-43 ◽  
Author(s):  
L. Pacheco-Lugo ◽  
J. Sáenz-García ◽  
E Navarro Quiroz ◽  
H. González Torres ◽  
L. Fang ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Lupus Nephritis ◽  
Lupus Erythematosus ◽  
Activity Index ◽  
Characteristic Curve ◽  
Renal Involvement ◽  
Interleukin 17 ◽  
Systemic Lupus ◽  
Cytokines And Chemokines ◽  
Xmap Technology

Background Systemic lupus erythematosus is a heterogeneous chronic inflammatory autoimmune disorder characterized by an exacerbated expression of cytokines and chemokines in different tissues and organs. Renal involvement is a significant contributor to the morbidity and mortality of systemic lupus erythematosus, and its diagnosis is based on renal biopsy, an invasive procedure with a high risk of complications. Therefore, the development of alternative, non-invasive diagnostic tests for kidney disease in patients with systemic lupus erythematosus is a priority. Aim To evaluate the plasma levels of a panel of cytokines and chemokines using multiplex xMAP technology in a cohort of Colombian patients with active and inactive systemic lupus erythematosus, and to evaluate their potential as biomarkers of renal involvement. Results Plasma from 40 systemic lupus erythematosus non-nephritis patients and 80 lupus nephritis patients with different levels of renal involvement were analyzed for 39 cytokines using Luminex xMAP technology. Lupus nephritis patients had significantly increased plasma eotaxin, TNF-α, interleukin-17-α, interleukin-10, and interleukin-15 as compared to the systemic lupus erythematosus non-nephritis group. Macrophage-derived chemokine, growth regulated oncogene alpha, and epidermal growth factor were significantly elevated in systemic lupus erythematosus non-nephritis patients when compared to lupus nephritis individuals. Plasma eotaxin levels allowed a discrimination between systemic lupus erythematosus non-nephritis and lupus nephritis patients, for which we performed a receiver operating characteristic curve to confirm. We observed a correlation of eotaxin levels with active nephritis (Systemic Lupus Erythematosus Disease Activity Index). Our data indicate that circulating cytokines and chemokines could be considered good predictors of renal involvement in individuals with systemic lupus erythematosus.

scholarly journals Prognosis of patients with systemic lupus erythematosus and discoid lesions

2013 ◽  
Vol 88 (5) ◽  
pp. 755-758 ◽  
Author(s):  
Thelma Larocca Skare ◽  
Barbara Stadler ◽  
Emilio Weingraber ◽  
Diogo F. De Paula
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Lupus Erythematosus ◽  
Systemic Disease ◽  
Univariate Analysis ◽  
Renal Involvement ◽  
Systemic Lupus ◽  
Renal Lesions ◽  
American College Of Rheumatology ◽  
Autoantibody Profile ◽  
The Central Nervous System

BACKGROUND: It has been observed that patients with systemic lupus erythematosus and discoid lesions have a milder systemic disease. OBJECTIVE: To compare the clinical, demographic and autoantibody profile of systemic lupus erythematosus patients with and without discoid lesions. METHODS: We carried out a retrospective study involving 288 systemic lupus erythematosus patients who met at least four classification criteria of the American College of Rheumatology for systemic lupus erythematosus, comparing the clinical, serological and demographic factors between patients with and without discoid manifestations. RESULTS: Of the 288 patients, 13.8% had discoid lesions. Univariate analysis found no differences in the prevalence of malar rash, photosensitivity, arthritis, serositis, leukopenia, lymphopenia and hemolytic anemia or anemia of the central nervous system (p = ns). Renal lesions were more common in those without discoid lesions (p =0.016), and hemolysis (p<0.0001) was more common in those with discoid lesions. Regarding the profile of autoantibodies, only the anti-RNP antibody was more common in those with discoid events (p =0.04). In a logistic regression study, only the renal lesions and anti-RNP maintained their associations with discoid manifestations. CONCLUSION: Patients with lesions of systemic lupus erythematosus and discoid lesions have lower prevalence of renal involvement and a greater presence of anti RNP.

Frequency of Class III and IV Nephritis in Systemic Lupus Erythematosus Without Clinical Renal Involvement: An Analysis of Predictive Measures

2011 ◽  
Vol 39 (1) ◽  
pp. 79-85 ◽  
Author(s):  
DAISUKE WAKASUGI ◽  
TAKAHISA GONO ◽  
YASUSHI KAWAGUCHI ◽  
MASAKO HARA ◽  
YUMI KOSEKI ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Lupus Nephritis ◽  
Lupus Erythematosus ◽  
High Titer ◽  
Renal Involvement ◽  
Renal Pathology ◽  
Class Iii ◽  
Systemic Lupus ◽  
Clinically Normal ◽  
Dsdna Antibody

Objective.To determine the frequency of International Society of Nephrology/Renal Pathology Society (ISN/RPS) class III or IV lupus nephritis in patients with systemic lupus erythematosus (SLE) without clinical renal involvement.Methods.We investigated the renal pathology of 195 patients with SLE, including 86 patients without clinical renal involvement.Results.Lupus nephritis other than class I was found in 58% of the patients without clinical renal involvement, and class III and IV nephritis was found in 15% of these patients. To reveal the predictive measures involved in class III or IV lupus nephritis, we explored the clinical measures in patients with SLE who did not have clinical renal involvement. Anti-dsDNA antibody titers were significantly higher (p = 0.0266) and C3 values were significantly lower (p = 0.0073) in patients with class III or IV lupus nephritis than in patients without class III or IV lupus nephritis. The sensitivity and specificity values were 77% and 73%, respectively, for cutoff levels of both 40 IU/ml for anti-dsDNA antibodies and 55 mg/dl for C3 (OR 8.8, p = 0.0011).Conclusion.The frequency of nephritis, including ISN/RPS class III and IV, was unexpectedly high in SLE patients without clinical renal involvement. ISN/RPS class III or IV lupus nephritis could be hidden in patients with SLE who present both a high titer of anti-dsDNA antibody and a low concentration of C3, even when they have clinically normal urinary findings and renal function.

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