Anticardiolipin and Anti-Beta2 Glycoprotein I Antibodies in Infants Born to Mothers with Antiphospholipid Antibody-Positive Autoimmune Disease: A Follow-Up Study

2006 ◽  
Vol 23 (4) ◽  
pp. 247-252 ◽  
Author(s):  
Mario Motta ◽  
Gaetano Chirico ◽  
Chiara Rebaioli ◽  
David Faden ◽  
Andrea Lojacono ◽  
...  
Keyword(s):  
Autoimmune Disease ◽  
Antiphospholipid Antibody ◽  
Follow Up Study ◽  
Glycoprotein I

Antiphospholipid Antibody Profile Stability Over Time: Prospective Results from APS ACTION Clinical Database and Repository

2020 ◽  
pp. jrheum.200513
Author(s):  
Elena Gkrouzman ◽  
Ecem Sevim ◽  
Jackie Finik ◽  
Danieli Andrade ◽  
Vittorio Pengo ◽  
...  
Keyword(s):  
Multivariable Analysis ◽  
Primary Objective ◽  
Antiphospholipid Antibody ◽  
Long Term Outcomes ◽  
Glycoprotein I ◽  
Baseline Characteristics ◽  
Stored Blood ◽  
Over Time

Objective APS ACTION Registry studies long-term outcomes in persistently antiphospholipid antibody (aPL)-positive patients. Our primary objective was to determine whether clinically meaningful aPL profiles at baseline remain stable over time. Our secondary objectives were to determine a) whether baseline characteristics differ between patients with stable and unstable aPL profiles, and b) predictors of unstable aPL profiles over time. Methods Clinically meaningful aPL profile was defined as positive lupus anticoagulant (LA) test and/or anticardiolipin (aCL)/anti-β2 glycoprotein-I (aβ2GPI) IgG/M ≥40 U. Stable aPL profile was defined as a clinically meaningful aPL profile in at least two-thirds of follow-up measurements. Generalized linear mixed models with logit link were used for primary objective analysis. Results Of 472 patients with clinically meaningful aPL profile at baseline (median follow up: 5.1 years), 366/472 (78%) patients had stable aPL profiles over time, 54 (11%) unstable; and 52 (11%) inconclusive. Time did not significantly affect odds of maintaining a clinically meaningful aPL profile at follow-up in univariate (p=0.906) and multivariable analysis (p=0.790). Baseline triple aPL positivity decreased (Odds Ratio [OR] 0.25, 95% Confidence Interval [CI] 0.10-0.64, p=0.004) and isolated LA test positivity increased (OR 3.3, 95% CI 1.53-7.13, p=0.002) the odds of an unstable aPL profile over time. Conclusion Approximately 80% of our international cohort patients with clinically meaningful aPL profile at baseline maintain such at a median follow-up of five years; triple aPL-positivity increase the odds of a stable aPL profile. These results will guide future validation studies of stored blood samples through APS ACTION Core Laboratories.

Predictive autoimmunity using autoantibodies: screening for anti-nuclear antibodies

2018 ◽  
Vol 56 (10) ◽  
pp. 1771-1777 ◽  
Author(s):  
Dolores Pérez ◽  
Boris Gilburd ◽  
Óscar Cabrera-Marante ◽  
Jose A. Martínez-Flores ◽  
Manuel Serrano ◽  
...  
Keyword(s):  
Autoimmune Disease ◽  
Early Detection ◽  
Autoimmune Diseases ◽  
Antinuclear Antibodies ◽  
Standard Technique ◽  
Clinical Suspicion ◽  
Follow Up Study ◽  
Asymptomatic Subjects

Abstract Background: Early detection of antinuclear antibodies (ANA) in asymptomatic subjects is useful to predict autoimmune diseases years before diagnosis. ANA have been determined by indirect immunofluorescence (IIF) using human epithelial type 2 (HEp-2) cells, which is considered the gold standard technique. Multiplex technology (BioPlex ANA Screen) has been introduced for ANA evaluation in recent years. Nevertheless, concordance between BioPlex and IIF is low and there is no harmonization between both methods for detection of autoantibodies. This study has aimed to clarify the clinical significance of autoantibodies detected by BioPlex ANA Screen in subjects with undiagnosed clinical suspicion of autoimmune disease and to determine the predictive value of autoantibodies detected by BioPlex ANA Screen. Methods: A 3-year follow-up study was performed of 411 subjects without a clear diagnosis of autoimmune diseases in whom autoantibodies were detected by BioPlex ANA Screen that were negative by IIF on HEp-2 cells. Results: At 3 years of follow-up, 312 (76%) subjects were positive for autoantibodies by IIF and 99 subjects continued to be negative. A diagnosis of autoimmune disease was found in most of the subjects (87%). Conclusions: BioPlex ANA Screen has greater sensitivity than IIF on HEp-2 cells for autoantibodies detection. Early detection of these antibodies by BioPlex can predict possible development of autoimmune diseases.

scholarly journals Clinical Application of Revised Laboratory Classification Criteria for Antiphospholipid Antibody Syndrome: Is the Follow-Up Interval of 12 Weeks Instead of 6 Weeks Significantly Useful?

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Sang Hyuk Park ◽  
Seongsoo Jang ◽  
Chan-Jeoung Park ◽  
Hyun-Sook Chi
Keyword(s):  
Clinical Application ◽  
Clinical Symptoms ◽  
Antibody Test ◽  
Classification Criteria ◽  
Antiphospholipid Antibody ◽  
Antiphospholipid Antibody Syndrome ◽  
Initial Test ◽  
Glycoprotein I ◽  
Negative Conversion

Background. According to revised classification criteria of true antiphospholipid antibody syndrome, at least one of three antiphospholipid antibodies should be present on two or more occasions at least 12 weeks apart. However, it can be inconvenient to perform follow-up tests with interval of 12 weeks. We investigated clinical application of follow-up tests with interval of 12 weeks. Method. Totals of 67, 199, and 332 patients tested positive initially for the lupus anticoagulants confirm, the anti-β2 glycoprotein-I antibody, and the anti-cardiolipin antibody test, respectively, from Jan 2007 to Jul 2009. We investigated clinical symptoms of patients, follow-up interval, and results of each test. Results. Among patients with initial test positive, 1.5%–8.5% were subjected to follow-up tests at interval of more than 12 weeks. Among 25 patients with negative conversion in tests, patients with interval of more than 12 weeks showed clinical symptom positivity of 33.3%, which was higher than that of 12.5% with 6–12 weeks. Among 34 patients with persistent test positive, clinical symptoms positivity trended to be more evident in patients at interval of 6–12 weeks (47.4% versus 26.7%, P=0.191) than more than 12 weeks. Conclusion. Less than 10% of patients with initial test positive had follow-up tests at interval of more than 12 weeks and the patients with persistent test positive at interval of more than 12 weeks showed trends toward having lower clinical symptoms than 6–12 weeks. More research is needed focused on the evidence that follow-up test at interval of more than 12 weeks should be performed instead of 6 weeks.

Predictive value of persistent versus transient antiphospholipid antibody subtypes for the risk of thrombotic events in pediatric patients with systemic lupus erythematosus

Blood ◽  
2005 ◽  
Vol 106 (13) ◽  
pp. 4152-4158 ◽  
Author(s):  
Christoph Male ◽  
Denise Foulon ◽  
Hugh Hoogendoorn ◽  
Patricia Vegh ◽  
Earl Silverman ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Lupus Erythematosus ◽  
Predictive Value ◽  
Diagnostic Value ◽  
Anticardiolipin Antibodies ◽  
Antiphospholipid Antibody ◽  
Systemic Lupus ◽  
Glycoprotein I ◽  
Strength Of Association

Study objectives were to determine, in children with systemic lupus erythematosus (SLE), (1) the association of antiphosholipid antibody (APLA) subtypes with thrombotic events (TEs) and (2) the predictive value of persistent versus transient antibodies for TEs. This is a cohort study of 58 SLE children in whom lupus anticoagulants (LAs), anticardiolipin antibodies (ACLAs), anti–β2-glycoprotein-I (anti–β2-GPI), and antiprothrombin (anti-PT) were assessed on at least 2 occasions (more than 3 months apart). Antibodies were classified as persistent (positive on at least 2 occasions) or transient (positive once). Outcomes were symptomatic TEs confirmed by objective radiographic tests identified retrospectively and prospectively. Seven of the 58 patients (12%) had 10 TEs; 5 patients had TEs during prospective follow-up. Persistent LAs showed the strongest association with TEs (P < .001). Persistent ACLAs (P = .003) and anti–β2-GPI (P = .002) were significantly associated with TEs; anti-PT (P = .063) showed a trend. Persistent or transient LAs and anti–β2-GPI showed similar strength of association, while ACLAs and anti-PT were no longer associated with TEs. Positivity for multiple APLA subtypes showed stronger associations with TEs than for individual APLA subtypes because of improved specificity. Lupus anticoagulant is the strongest predictor of the risk of TEs; other APLA subtypes provide no additional diagnostic value. Anticardiolipin antibodies and anti-PT require serial testing because only persistent antibodies are associated with TEs.

scholarly journals Exploring Systemic Autoimmunity in Thyroid Disease Subjects

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Thushani Siriwardhane ◽  
Karthik Krishna ◽  
Vinodh Ranganathan ◽  
Vasanth Jayaraman ◽  
Tianhao Wang ◽  
...  
Keyword(s):  
Autoimmune Disease ◽  
Autoimmune Diseases ◽  
Thyroid Disease ◽  
Clinical Laboratory ◽  
Thyroid Stimulating Hormone ◽  
Systemic Autoimmune Disease ◽  
Systemic Autoimmune Diseases ◽  
Autoimmune Thyroid ◽  
Follow Up Study

Introduction. Individuals with one autoimmune disease are at risk of developing a second autoimmune disease, but the pathogenesis or the sequential occurrence of multiple autoimmune diseases has not been established yet. In this study, we explored the association and sequential occurrence of antibodies in thyroid disease and systemic autoimmune disease subjects. We evaluated thyroid hormones, thyroid-stimulating hormone (TSH), free thyroxine (FT4), thyroid autoantibodies, anti-thyroperoxidase (anti-TPO), and anti-thyroglobulin (Tg) to comprehend the association with systemic autoimmune autoantibodies, anti-nuclear antibodies (ANA), and autoantibodies to extractable nuclear antigens (ENA) in subjects with thyroid-related symptoms. Methods. A total of 14825 subjects with thyroid-related symptoms were tested at Vibrant America Clinical Laboratory for thyroid markers (TSH, FT4, anti-TPO, and anti-Tg) and an autoimmune panel (ANA panel and ENA-11 profile) from March 2016 to May 2018. Thyroid-positive (based on TSH and FT4 levels), anti-TPO-positive, and anti-Tg-positive subjects were assessed for the prevalence of ANA and anti-ENA antibodies. A 2-year follow-up study was conducted to assess the sequential order of appearance of autoimmune markers in thyroid and systemic autoimmune diseases. Results. In the retrospective analysis, 343/1671 (20.5%), 2037/11235 (18.1%), and 1658/9349 (17.7%) of thyroid+, anti-TPO+, and anti-Tg+ subjects were found to be seropositive for ANA. Anti-ENA was detected in a higher prevalence than ANA with 475/1671 (28.4%), 3063/11235 (27.3%), and 2511/9349 (26.9%) in the same groups of subjects, respectively. Our results are found to be much higher than the reported prevalence of anti-ENA in general population. During the 2-year follow-up study, anti-TPO appeared significantly earlier than ANA and anti-ENA in an average of 253 (±139) and 227 (±127) days, respectively. Conclusions. A high prevalence of anti-ENA and ANA was found to be coexisting with autoimmune thyroid disease subjects, with anti-TPO occurring prior to the onset of ANA and anti-ENA. Therefore, frequent follow-ups and evaluation of ANA and anti-ENA in subjects with anti-TPO positivity would be beneficial in early detection of other systemic autoimmune diseases.

Electron Microscopy of Human Gallstones

1971 ◽  
Vol 29 ◽  
pp. 296-297
Author(s):  
C. Wolpers ◽  
R. Blaschke
Keyword(s):  
Electron Microscopy ◽  
Room Temperature ◽  
Bile Pigment ◽  
X Ray Diffraction ◽  
Triclinic Crystal System ◽  
X Ray ◽  
Follow Up Study ◽  
Infra Red ◽  
Main Components

Scanning microscopy was used to study the surface of human gallstones and the surface of fractures. The specimens were obtained by operation, washed with water, dried at room temperature and shadowcasted with carbon and aluminum. Most of the specimens belong to patients from a series of X-ray follow-up study, examined during the last twenty years. So it was possible to evaluate approximately the age of these gallstones and to get information on the intensity of growing and solving.Cholesterol, a group of bile pigment substances and different salts of calcium, are the main components of human gallstones. By X-ray diffraction technique, infra-red spectroscopy and by chemical analysis it was demonstrated that all three components can be found in any gallstone. In the presence of water cholesterol crystallizes in pane-like plates of the triclinic crystal system.

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