Prevalence of Anti-Nuclear Antibodies and Anti-Phospholipid Antibodies in an Egyptian Cohort with Schizophrenia: A Case-Control Study

2021 ◽  
Vol 17 ◽  
Author(s):  
Basma M. Medhat ◽  
Mohammed H. Abu-Zaid ◽  
Dalia Dorgham ◽  
Nehal El-Ghobashy ◽  
Angie Y. Yousri ◽  
...  
Keyword(s):  
Lupus Erythematosus ◽  
Disease Duration ◽  
Therapeutic Implications ◽  
Glycoprotein I ◽  
Serologic Evidence ◽  
And Gender ◽  
Ig G ◽  
Dsdna Antibodies ◽  
Control Study ◽  
Anti Phospholipid Syndrome

Background: Psychiatric disorders, including schizophrenia could herald other manifestation(s) of systemic lupus erythematosus (SLE) potentially hindering timely and optimal management. Moreover, schizophrenia is among the described ‘extra-criteria’ manifestations of anti-phospholipid syndrome (APS). Hence, screening schizophrenia patients for SLE and APS may pose diagnostic and therapeutic implications. Objectives: Examine schizophrenia patients with no overt connective tissue disease(s) manifestation(s) for clinical and/or serologic evidence of SLE and/or APS. Methods: The study included 92 schizophrenia patients [61 (66.3%) males] and 100 age- and gender-matched healthy controls. Both groups were tested for anti-nuclear antibodies (ANAs), anti-double stranded deoxyribonucleic acid (anti-dsDNA) antibodies, complement 3 (C3) and C4, and criteria anti-phospholipid antibodies (aPL) [anticardiolipin Immunoglobulin (Ig) G and IgM, anti-beta-2-glycoprotein I IgG and IgM, and lupus anticoagulant (LAC)]. Results: The patients’ mean age and disease duration were 28.8 ± 8.1 and 5.7 ± 2.2 years, respectively. The prevalence of ANA positivity, height of titre, and pattern was comparable between patients and controls (p = 0.9, p = 0.8 and p = 0.1, respectively). Anti-dsDNA antibodies and hypocomplementemia were absent in both groups. A significantly higher frequency of positive LAC was observed among patients compared with controls (7.6 % vs. 1 %, p = 0.02), whereas other aPL were comparable between both groups. None of the patients or controls demonstrated clinically meaningful (medium or high) aPL titres. Conclusion: In our study, schizophrenia was solely associated with LAC. Thus, in the absence of findings suggestive of SLE or APS, routine screening for both diseases is questionable.

scholarly journals Evaluation of Frequency, Clinical Correlation, and Antibodies Confirmation Profile in Patients with Suspected Antiphospholipid Syndrome

TH Open ◽  
2021 ◽  
Vol 05 (04) ◽  
pp. e470-e478
Author(s):  
Filipe F. Martins ◽  
Teresa M. L. Campos
Keyword(s):  
Antiphospholipid Syndrome ◽  
Lupus Erythematosus ◽  
Emergency Services ◽  
Systemic Autoimmune Disease ◽  
Outpatient Services ◽  
Vein Thrombosis ◽  
Glycoprotein I ◽  
Deep Vein ◽  
Ig G

AbstractAntiphospholipid syndrome (APS) is a systemic autoimmune disease characterized by arterial and venous thrombotic manifestations and/or pregnancy-related complications in patients with persistent antiphospholipid (aPL) antibodies. The introduction of Sapporo's classification criteria allowed uniformity in the classification of this pathology, representing a considerable advance in its diagnosis. However, currently some doubts about the application of these criteria still persist. The aim of this study was to contribute to the better understanding of APS by the assessment of aPL prevalence, the association between clinical and laboratory tests, and evaluation of the aPL confirmatory profile.In this study, 1,179 samples from patients with suspected APS of both genders, without age restrictions, who were advised to test for complete aPL's profile were analyzed. The samples were tested for lupus anticoagulant (LAC), anticardiolipin immunoglobulin (Ig) G/IgM and anti-β-2-glycoprotein I IgG/IgM antibodies. Patient samples with isolated test requests for analysis and samples from patients under the influence of anticoagulants or in an infectious process were excluded.The overall positivity found was 17.9% and the most frequent aPL was LAC. The antibodies were determined in isolation and in association. The prevalence of triple positivity was 0.8% and double positivity was 1.8%. Positivity was higher in inpatient/emergency services compared with outpatient services. There was a higher positivity in individuals over 41 years, males, patients with systemic lupus erythematosus, kidney complications, and deep vein thrombosis/thrombophlebitis. The positivity confirmation with second sample was 39.5% and the confirmation profile shows that 50.6% of samples confirmed with same positivity profile; 17.3% with a different profile and regarding to these, 2.5% of the samples confirmed positivity with a different antibody from the previously detected.This study suggests that the aPL's positivity tends to increase with age, showing that the aPL's testing should be avoided during an acute event and reinforces the need for complete aPL laboratory profile in the second sample and subsequent determinations.

Cluster Analysis of Autoantibodies in 852 Patients with Systemic Lupus Erythematosus from a Single Center

2014 ◽  
Vol 41 (7) ◽  
pp. 1304-1310 ◽  
Author(s):  
Bahar Artim-Esen ◽  
Erhan Çene ◽  
Yasemin Şahinkaya ◽  
Semra Ertan ◽  
Özlem Pehlivan ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Cluster Analysis ◽  
Clinical Features ◽  
Lupus Erythematosus ◽  
Renal Involvement ◽  
Damage Index ◽  
Systemic Lupus ◽  
Kaplan Meier ◽  
Ig G ◽  
Dsdna Antibodies

Objective.Associations between autoantibodies and clinical features have been described in systemic lupus erythematosus (SLE). Herein, we aimed to define autoantibody clusters and their clinical correlations in a large cohort of patients with SLE.Methods.We analyzed 852 patients with SLE who attended our clinic. Seven autoantibodies were selected for cluster analysis: anti-DNA, anti-Sm, anti-RNP, anticardiolipin (aCL) immunoglobulin (Ig)G or IgM, lupus anticoagulant (LAC), anti-Ro, and anti-La. Two-step clustering and Kaplan-Meier survival analyses were used.Results.Five clusters were identified. A cluster consisted of patients with only anti-dsDNA antibodies, a cluster of anti-Sm and anti-RNP, a cluster of aCL IgG/M and LAC, and a cluster of anti-Ro and anti-La antibodies. Analysis revealed 1 more cluster that consisted of patients who did not belong to any of the clusters formed by antibodies chosen for cluster analysis. Sm/RNP cluster had significantly higher incidence of pulmonary hypertension and Raynaud phenomenon. DsDNA cluster had the highest incidence of renal involvement. In the aCL/LAC cluster, there were significantly more patients with neuropsychiatric involvement, antiphospholipid syndrome, autoimmune hemolytic anemia, and thrombocytopenia. According to the Systemic Lupus International Collaborating Clinics damage index, the highest frequency of damage was in the aCL/LAC cluster. Comparison of 10 and 20 years survival showed reduced survival in the aCL/LAC cluster.Conclusion.This study supports the existence of autoantibody clusters with distinct clinical features in SLE and shows that forming clinical subsets according to autoantibody clusters may be useful in predicting the outcome of the disease. Autoantibody clusters in SLE may exhibit differences according to the clinical setting or population.

scholarly journals IgA vasculitis (Henoch – Schönlein Purpura) as the first manifestation of juvenile Systemic Lupus Erythematosus: Case-control study and systematic review

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Chiharu Murata ◽  
Ana Luisa Rodríguez-Lozano ◽  
Hayde Guadalupe Hernández-Huirache ◽  
Miriam Martínez-Pérez ◽  
Laura Andrea Rincón-Arenas ◽  
...  
Keyword(s):  
Systematic Review ◽  
Prognostic Factors ◽  
Lupus Erythematosus ◽  
Case Series ◽  
Iga Vasculitis ◽  
Age And Gender ◽  
Gender Distribution ◽  
And Gender ◽  
A Prospective Study ◽  
Control Study

Abstract Background We have recognized 15 children with jSLE and the antecedent of IgA vasculitis (HSP). This association is not broadly present in the literature. Aim To know the age and gender distribution of children with IgA vasculitis (HSP), compare it to our IgA vasculitis (HSP) + jSLE cases, and identify prognostic factors to develop jSLE within our case series, IgA vasculitis (HSP) vs. IgA vasculitis (HSP) + jSLE. Methods A systematic review was carried out to know the age and gender distribution of children with IgA vasculitis (HSP). The information obtained plus data from 110 children with IgA vasculitis (HSP) from the Instituto Nacional de Pediatría were used to compare groups and identify prognostic factors. We performed a case-control study in patients < 18 years, consisting of 15 cases retrospectively identified with IgA vasculitis (HSP) + jSLE, and 110 IgA vasculitis (HSP) control subjects. Results The information of 12,819 IgA vasculitis (HSP) subjects from the systematic review and 110 IgA vasculitis (HSP) controls was obtained and compared to our 15 IgA vasculitis (HSP) + jSLE cases. The mean age of IgA vasculitis (HSP) was 7.1-years vs. 10.4-years of IgA vasculitis (HSP) + jSLE at the HSP diagnosis. Female to male ratio of IgA vasculitis (HSP) was 1:1.33 vs. 1:0.25 of IgA vasculitis (HSP) + jSLE. Patients with IgA vasculitis (HSP) + jSLE had lower levels of Hemoglobin (Hb) compared to patients with IgA vasculitis (HSP) 109 g/L vs. 141 g/L. For the development of jSLE, we found older age and lower levels of Hb as prognostic factors with OR [95% CI]: 1.37 [1.06, 1.89] and 5.39 [2.69, 15.25], respectively. Conclusion IgA vasculitis (HSP) + jSLE patients are older and have lower levels of Hb than patients with IgA vasculitis (HSP). It is necessary to confirm these findings through a prospective study.

Rorschach Characteristics in Adolescents with Systemic Lupus Erythematosus

2006 ◽  
Vol 28 (1) ◽  
pp. 100-118 ◽  
Author(s):  
J. Santoantonio ◽  
L. Yazigi ◽  
E. I. Sato
Keyword(s):  
Lupus Erythematosus ◽  
Case Control Study ◽  
Activity Index ◽  
Disease Activity Index ◽  
Female Adolescents ◽  
Control Group ◽  
Intelligence Scale ◽  
The Mean ◽  
Experimental Group ◽  
Control Study

The purpose of this study was to investigate the personality characteristics in adolescents with SLE. The research design is a case-control study by means of the Rorschach Method and the Wechsler Intelligence Scale. Study group: 30 female adolescents with lupus, 12–17 years of age. The SLE Disease Activity Index was administered during the period of psychological evaluation. Control group: 32 nonpatient adolescents were matched for age, sex, and socioeconomic level. In the Wechsler Intelligence Scale the mean IQ of the experimental group was significantly lower than that of the control group (77 and 98, respectively, p < .001). In the Rorschach, the lupus patients showed greater difficulty in interpersonal interactions, although they displayed the resources to process affect and to cope with stressful situations. A positive moderate correlation (p = .069) between the activity index of the disease and the affect constriction proportion of the Rorschach was observed: the higher the SLEDAI score, the lower the capacity to process affect. There is a negative correlation between the activity index of the disease and the IQ (p = .001): with a higher activity index of the disease, less intellectual resources are available.

Synchronized Inhibition of the Phospholipid Mediated Autoactivation of Factor XII in Plasma by β2-glycoprotein I and Anti-β2-glycoprotein I

1995 ◽  
Vol 73 (05) ◽  
pp. 798-804 ◽  
Author(s):  
Inger Schousboe ◽  
Margit Søe Rasmussen
Keyword(s):  
Lupus Erythematosus ◽  
Lupus Anticoagulant ◽  
Response Curve ◽  
Inhibitory Effect ◽  
Factor Xii ◽  
High Antibody ◽  
Contact Activation ◽  
Maximal Inhibition ◽  
Lupus Anticoagulants ◽  
Glycoprotein I

SummaryLupus anticoagulants are a group of antibodies commonly found in patients with autoimmune diseases such as systemic lupus erythematosus. Lupus anticoagulants inhibit phospholipid dependent coagulation and may bind to negatively charged phospholipids. Recent studies have suggested an association between anti-β2-glycoprotein I and a lupus anticoagulant, whose activity is frequently dependent on the presence of β2-glycoprotein I. Based on these observations, the effect of anti-β2-glycoprotein I on the autoactivation of factor XII in plasma was investigated. Autoactivation initiated by the presence of negatively charged phospholipids, but not by sulfatide, was strongly inhibited by immunoaffinity purified anti-β2-glycoprotein I. The dose-response curve of anti-β2-gly coprotein I was identical with that of a precipitating antibody, showing no inhibition at low and high antibody dilutions and maximal inhibition at an intermediate dilution. At high antibody concentrations, an increased rate of factor Xlla activation was observed. This increase was of the same magnitude as the decreased rate observed in plasma supplemented with the same amount of β2-glycoprotein I as in the plasma itself. This confirms the inhibitory effect of β2-GP-I on the contact activation and shows that inhibition is effective on the autoactivation of factor XII in plasma. The inhibitory action of β2-glycoprotein I was independent of the inhibition caused by the anti- β2-glycoprotein I/β2-glycoprotein I complex suggesting a synchronized inhibition of factor XII autoactivation by β2-glycoprotein I and anti-β2-gly coprotein I. The inhibition caused by the antibody is suggested to be caused by a reduced availability of negatively charged phospholipids due to the binding of the anti-β2- GP-I/β2-GP-I complex. This complex may be a lupus anticoagulant.

Autoantibodies to Phospholipids and to the Coagulation Proteins in AIDS

1997 ◽  
Vol 77 (05) ◽  
pp. 0856-0861 ◽  
Author(s):  
N Abuaf ◽  
S Laperche ◽  
B Rajoely ◽  
R Carsique ◽  
A Deschamps ◽  
...  
Keyword(s):  
Lupus Erythematosus ◽  
Antiphospholipid Antibodies ◽  
Blood Donors ◽  
Heterogeneous Mixture ◽  
Systemic Lupus ◽  
Hematological Disorders ◽  
False Positive Test ◽  
Glycoprotein I ◽  
Coagulation Proteins ◽  
Hiv 1

SummaryIn HIV-1 infection, an increased prevalence of anticardiolipin autoantibodies (aCL) and lupus anticoagulant (LA) has been described. In order to see if these antibodies are isolated or, like in autoimmune diseases, associated with hematological disorders and with antibodies to other phospholipids and to proteins of coagulation, we investigated 3 groups of patients: 1. 342 HIV-1 infected patients, 2. 145 control patients including 61 systemic lupus erythematosus (SLE) patients, 58 patients with a connective tissue disease, 15 patients with stroke, 11 patients with syphilis and 3.100 blood donors. In HIV-1 infection antiprothrombin (aPrT) antibodies were present in 25% of patients, the prevalence of antiphosphatidylcholine antibodies (aPC) (50%) was almost as high as aCL (64%), and 39% had both antibodies. Absorption on liposomes of the latter revealed an heterogeneous mixture of aCL and aPC or cross-reacting antibodies. In contrast with SLE, anti-β2-glycoprotein I (4%), LA (1%), biological false positive test for syphilis (0.3%), thrombosis (p <0.001) were uncommon. In HIV-1 infection, antiphospholipid antibodies do not associate with features linked to them in SLE or syphilis.

The Identification and Significance of a Thr→Pro Polymorphism in Kringle IV Type 8 of Apolipoprotein(a)

1997 ◽  
Vol 77 (05) ◽  
pp. 0949-0954 ◽  
Author(s):  
J Prins ◽  
F R Lues ◽  
Y Y van der Hoek ◽  
J J.P Kastelein ◽  
B N Bouma ◽  
...  
Keyword(s):  
Case Control Study ◽  
Amino Acid Position ◽  
Case Control ◽  
Binding Studies ◽  
Binding Characteristics ◽  
Apolipoprotein A ◽  
Significant Independent Risk Factor ◽  
And Gender ◽  
Control Study

SummaryElevated plasma levels of lipoprotein(a) [Lp(a)] represent a significant independent risk factor for the development of atherosclerosis. Interindividual levels of apo(a) vary over 1000-fold and are mainly due to inheritance that is linked to the locus of the apolipoprotein(a) [apo(a)] gene. The apo(a) gene encodes multiple repeats of a sequence exhibiting up to 85% DNA sequence homology with plasminogen kringle IV (K.IV), a lysine binding domain. In our search for sequence polymorphisms in the K.IV coding domain, we identified a polymorphism predicting a Thr→Pro substitution located at amino acid position 12 of kringle IV type 8 of apo(a). The functional and clinical significance of this polymorphism was analysed in a case-control study and by comparing the in vitro lysine binding characteristics of the two Lp(a) subtypes.The case-control study (involving 153 subjects having symptomatic atherosclerosis and 153 age and gender matched normolipidemic controls) revealed an overall allele frequency for the Thr12-→Pro substitution in kringle IV type 8 of 14% and a negative association between presence of the Pro12-subtype and symptomatic atherosclerosis (p <0.03). The in vitro lysine binding studies, using Lp(a) isolated from subjects homozygous for either Thr12 or Pro12 in K.IV type 8, revealed comparable lysine-Sepharose binding fractions for the two subtypes. The binding affinity (Kd) for immobilised plasmin degraded des- AA-fibrin (DesafibTM-X) was also comparable for the two subtypes, however a decreased maximal attainable binding (Bmax) for immobilised desafibTM-X was observed for the Pro12-subtype Lp(a).

Anti-annexin A5, Antiphosphatidylinositol Antibodies and Haematological Parameters in Preeclampsia Patients: A Case-Control Study

2020 ◽  
Vol 16 ◽  
Author(s):  
Wan Haslindawani Wan Mahmood ◽  
Md Asiful Islam ◽  
Mimi Azreen Abdullah ◽  
Noor Haslina Mohd Noor ◽  
Indhira Subbiah ◽  
...  
Keyword(s):  
Case Control Study ◽  
Case Control ◽  
Activated Partial Thromboplastin Time ◽  
Haematological Parameters ◽  
Annexin A5 ◽  
Glycoprotein I ◽  
Mild Preeclampsia ◽  
Routine Assay ◽  
Low Prevalence ◽  
Control Study

Background: Prevalence and the risk of common antiphospholipid antibodies (aPLs) such as lupus anticoagulant (LA), anticardiolipin (aCL) and anti-β2-glycoprotein I (β2-GPI) antibodies in preeclampsia is a matter of debate. Recently, interests have expanded in evaluating the risks of presenting non-classic aPLs in preeclampsia patients. Objective: The objective of this case-control study was to evaluate some haematological parameters besides assessing the presence of anti-annexin A5 and antiphosphatidylinositol (aPI) antibodies in preeclampsia patients compared to nonpreeclampsia subjects. Methods: From two hospitals in Malaysia, a total of 84 subjects were recruited in this case-control study including 42 preeclampsia and 42 age-matched non-preeclampsia subjects. Some haematological parameters [i.e., haemoglobin, total white blood cell, platelet, prothrombin time and activated partial thromboplastin time (APTT)] were assessed besides screening for anti-annexin A5 and aPI antibodies. Results: Among the haematological parameters, APTT was significantly high in mild preeclampsia when compared to severe preeclampsia subjects (p=0.007). IgG anti-annexin A5 antibody was detected in a single preeclampsia subject only (2.4%) and none in non-preeclampsia subjects. Conclusion: Because of the low prevalence, non-classic aPLs should not be considered as a risk factor in developing preeclampsia and not justifiable to consider as a routine assay in pregnant women.

scholarly journals SARS-CoV-2 Ig G among Healthcare Workers and the General Population

Pathogens ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 465
Author(s):  
Gregorio P. Milani ◽  
Mario G. Bianchetti ◽  
Giuseppe Togni ◽  
Andreas W. Schoenenberger ◽  
Franco Muggli
Keyword(s):  
General Population ◽  
Healthcare Workers ◽  
Geographical Area ◽  
Healthcare Personnel ◽  
Protein Subunit ◽  
Positive Serology ◽  
Seroprevalence Data ◽  
And Gender ◽  
Few Data ◽  
Ig G

It is assumed that healthcare workers are at the highest risk to be infected by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). However, few data from healthcare workers who do not primarily take care of patients with SARS-CoV-2 infection support this assumption. We investigated the prevalence of immunoglobulin G (Ig G) against SARS-CoV-2 among healthcare workers who do not primarily take care of patients with SARS-CoV-2 infection and the general population in a well-defined geographical area. The first part of the study was conducted in May 2020 in Val Mesolcina (Southern Switzerland), a valley with ~8000 inhabitants. All healthcare workers were invited. All participants (n = 488) of the Swiss Longitudinal Cohort Study (SWICOS), a cohort representative of the general population, were also invited. Circulating Ig G against spike protein subunit 1 of SARS-CoV-2 were tested in each subject. Subjects with positive Ig G were tested again after 6 months. The condition of being a healthcare worker, rather than a part of the general population, was tested as a predictor of seroprevalence positivity by both simple and multiple (adjusted for age and sex) logistic regression. Eleven (2.6%) of the 423 SWICOS participants and 46 (16%) out of 289 healthcare workers were positive for antibodies against SARS-CoV-2. The seroprevalence OR was 7.01 (95% CI: 3.53–15.47) for healthcare workers as compared to SWICOS participants. After adjusting for age and gender, the seroprevalence OR was 5.13 (95% CI: 2.54–10.40). About three quarters of the subjects in the SWICOS (73%) and in healthcare (79%) group with a previous positive serology still presented positive Ig G against the SARS-CoV-2 after 6 months. The present seroprevalence data point out that the SARS-CoV-2 infection is seven times higher among healthcare workers than in the general population of Val Mesolcina. Efforts to effectively protect all the healthcare personnel are needed.

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