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lupus anticoagulant testing

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https://www.readbyqxmd.com/read/28339917/hellp-syndrome-as-a-potential-cause-of-false-positive-lupus-anticoagulant-testing
#1
Zhen Mei, Krzysztof Mikrut, Jonathan Miller
No abstract text is available yet for this article.
March 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28339897/reflex-lupus-anticoagulant-and-coagulation-factor-testing-has-low-utility-in-the-preoperative-surgical-hemostasis-assessment
#2
Stephen P Persaud, Ronald Jackups
No abstract text is available yet for this article.
March 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28316135/variability-of-cut-off-values-for-the-detection-of-lupus-anticoagulants-results-of-an-international-multicenter-multiplatform-study
#3
Armando Tripodi, Veena Chantarangkul, Michela Cini, Katrien Devreese, Jeffrey S Dlott, Roberta Giacomello, Elaine Gray, Cristina Legnani, Marta E Martinuzzo, Paola Pradella, Annelie Siegemund, Sitalakshmi Subramanian, Pierre Suchon, Sophie Testa
BACKGROUND: Cut-off values for results interpretation of lupus anticoagulant (LA) detection are poorly investigated. AIMS: (i) To assess whether results from healthy donors were normally distributed and (ii) the between-laboratories differences of cut-off values for screening, mixing and LA confirmation when calculated as 99(th) or 95(th) centiles, and (iii) to assess their impact on LA detection-rate. METHODS: Each of 11 labs using one of the 3 widely-used commercial platforms for LA detection was asked to collect plasmas from 120 healthy donors and to perform screening, mixing and LA confirmation with two methods (activated partial thromboplastin time [APTT]- and dilute Russell viper venom [dRVV]-derived)...
March 17, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28302338/-laboratory-diagnosis-of-antiphospholipid-syndrome-from-criteria-to-practice
#4
V Joste, M-A Dragon-Durey, L Darnige
The antiphospholipid syndrome is a bioclinical entity defined by thrombosis and/or obstetrical complications in the presence, at least 12 weeks apart, of antiphospholipid antibodies detected by coagulation test (lupus anticoagulant) or immunological assays (anticardiolipin, anti-β2-glycoprotein I antibodies). Biological markers' improvement such as anti-phosphatidylserine/prothrombin and biological score should allow better patients' management and preventive therapeutic for thrombosis and obstetrical complications...
March 14, 2017: La Revue de Médecine Interne
https://www.readbyqxmd.com/read/28279839/comorbid-association-of-antiphospholipid-antibodies-and-migraine-a-systematic-review-and-meta-analysis
#5
REVIEW
Md Asiful Islam, Fahmida Alam, Kah Keng Wong
BACKGROUND: Antiphospholipid antibodies (aPLs) namely anticardiolipin (aCL) antibody, anti-β2-glycoprotein I (β2GPI) antibody and lupus anticoagulant (LA) are autoantibodies produced against anionic phospholipids and proteins on plasma membranes. Migraine is a primary headache disorder which has growing evidences of autoimmune-mediated pathogenesis and previous studies suggested the presence of aPLs in migraine patients. AIMS: The aim of this study was to evaluate the comorbid association between aPLs (aCL, anti-β2GPI and LA) and migraine compared to healthy controls...
March 7, 2017: Autoimmunity Reviews
https://www.readbyqxmd.com/read/28279213/cardiovascular-risk-factors-are-major-determinants-of-thrombotic-risk-in-patients-with-the-lupus-anticoagulant
#6
Florian Posch, Johanna Gebhart, Jacob H Rand, Silvia Koder, Peter Quehenberger, Vittorio Pengo, Cihan Ay, Ingrid Pabinger
BACKGROUND: Patients with the lupus anticoagulant (LA) are at an increased risk of thrombotic events, which in turn increase the risk of death. Understanding the determinants of thrombotic risk in patients with LA may pave the way towards targeted thromboprophylaxis. In the Vienna Lupus Anticoagulant and Thrombosis Study (LATS), we systematically evaluate risk factors for thrombotic events in patients with LA. METHODS: We followed 150 patients (mean age: 41.3 years, female gender: n = 122 (81...
March 10, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28267664/carotid-free-floating-thrombus-causing-stroke-in-a-young-woman-with-lupus-anticoagulant-a-case-report-and-review-of-the-literature
#7
Abolfazl Afsharfard, Barmak Gholizadeh, Younes Abdolalian, Seyed Masoud Hosseini
INTRODUCTION: In young adults Stroke is a challenging condition and various tests are needed to diagnose and manage its underlying problems. Free floating thrombosis of internal carotid artery (FFT-ICA) is one of the rare problems among carotid artery diseases which can lead to stroke in adults. Owing to limited cases of FFT-ICA there is not a worldwide accepted consensus on management of FFT-ICA, but some recurrences after medical management have been reported in the literature. PRESENTATION OF CASE: A-25-year old woman was referred to hospital with sudden onset aphasia and right sided hemiparesis...
February 20, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28258054/thrombophilia-risk-is-not-increased-in-children-after-perinatal-stroke
#8
Colleen Curtis, Aleksandra Mineyko, Patricia Massicotte, Michael Leaker, Xiu Yan Jiang, Amalia Floer, Adam Kirton
Perinatal stroke causes cerebral palsy and lifelong disability. Specific diseases are definable but mechanisms are poorly understood. Evidence suggests possible associations between arterial perinatal stroke and prothrombotic disorders but population-based, controlled, disease-specific studies are limited. Understanding thrombophilia in perinatal stroke informs pathogenesis models and clinical management. We conducted a population-based, prospective, case-control study to determine the association of specific perinatal stroke diseases with known thrombophilias...
March 3, 2017: Blood
https://www.readbyqxmd.com/read/28179389/homonymous-hemianopia-in-the-primary-antiphospholipid-syndrome
#9
Derek Kwun-Hong Ho, Rishi Ramessur, Mradul Gupta, John P Mathews
A woman aged 26 years was referred by her GP to the eye casualty department with sudden-onset left homonymous hemianopia and right-sided headache. Full ophthalmic examination was normal with the exception of a left homonymous hemianopia confirmed with automated perimetry. Urgent CT imaging revealed a non-haemorrhagic cerebral infarct in the right parieto-occipital region. Subsequent blood tests confirmed a diagnosis of antiphospholipid syndrome with positivity in IgG anticardiolipin antibody, IgG anti-β2-GP1 antibody and the Lupus anticoagulant screen...
February 8, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28153662/antiphospholipid-antibody-profile-based-obstetric-outcomes%C3%A2-of-primary-antiphospholipid-syndrome-the%C3%A2-pregnants-study
#10
Gabriele Saccone, Vincenzo Berghella, Giuseppe Maria Maruotti, Tullio Ghi, Giuseppe Rizzo, Giuliana Simonazzi, Nicola Rizzo, Fabio Facchinetti, Andrea Dall'Asta, Silvia Visentin, Laura Sarno, Serena Xodo, Dalila Bernabini, Francesca Monari, Amanda Roman, Ahizechukwu Chigoziem Eke, Ariela Hoxha, Amelia Ruffatti, Ewoud Schuit, Pasquale Martinelli
BACKGROUND: Antiphospholipid syndrome is an autoimmune, hypercoagulable state that is caused by antiphospholipid antibodies. Anticardiolipin antibodies, anti-β2 glycoprotein-I, and lupus anticoagulant are the main autoantibodies found in antiphospholipid syndrome. Despite the amassed body of clinical knowledge, the risk of obstetric complications that are associated with specific antibody profile has not been well-established. OBJECTIVE: The purpose of this study was to assess the risk of obstetric complications in women with primary antiphospholipid syndrome that is associated with specific antibody profile...
January 30, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28128085/antiphospholipid-syndrome-with-anti%C3%AE-2glicoprotein-1-antibodies-as-the-cause-of-recurrent-tibial-vein-thrombosis-in-sapho-syndrome
#11
Hanna Przepiera-Będzak, Marek Brzosko
The antiphospholipid antibody syndrome is defined by the presence of antiphospholipid antibodies in patients with recurrent venous or arterial thromboembolism (1). SAPHO syndrome is a rare disease, characterized by specific clinical manifestations of synovitis, acne pustulosis, hyperostosis, and osteitis. It is a disease that manifests with a combination of osseous and articular manifestations associated with skin lesions (2). Venous thrombosis complicating SAPHO syndrome seems to be uncommon with an unclear pathogenesis (3-9)...
December 2016: Acta Dermatovenerologica Croatica: ADC
https://www.readbyqxmd.com/read/28050648/diagnostic-value-of-antibodies-to-phosphatidylserine-prothrombin-complex-for-antiphospholipid-syndrome-in-chinese-patients
#12
Lei Zhu, Chun Li, Na Liu, Xin Yang, R L Jia, Rong Mu, Yin Su, Z G Li
To evaluate the diagnosis value of antibodies to phosphatidylserine/prothrombin complex (aPS/PT) in patients with antiphospholipid syndrome (APS) and to determine the clinical features of APS patients with avidity of aPS/PT. Serum samples were collected from 108 APS patients. Sixty patients with pregnancy morbidity, 37 patients with thrombosis without a history of autoimmune diseases, and 89 healthy blood donors were included as the control group. The enzyme-linked immunosorbent assay (ELISA) test was performed to detect the concentration of aPS/PT, including IgG/M, IgG, and IgM forms, in the same serum sample...
February 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28050066/antiphospholipid-syndrome-a-diagnostic-challenge
#13
REVIEW
R S Mallhi, Neerja Kushwaha, T Chatterjee, J Philip
The antiphospholipid syndrome (APS) is an acquired autoimmune thrombophilic disorder that is characterized by thrombosis (venous, arterial and microvascular) and obstetric morbidity due to a diverse family of antibodies against phospholipid-binding proteins present in plasma. The term antiphospholipid antibody is actually a misnomer as the antibodies are not against the phospholipid per se, but target the plasma protein co-factors, which bind to anionic PLs. The exact etiology has not been elucidated and is multifactorial...
December 2016: Medical Journal, Armed Forces India
https://www.readbyqxmd.com/read/28028988/direct-oral-anticoagulants-in-patients-with-thrombophilia-challenges-in-diagnostic-evaluation-and-treatment
#14
REVIEW
Anetta Undas, Tadeusz Góralczyk
Direct oral anticoagulants (DOACs) or non-vitamin K oral anticoagulants (NOACs) are increasingly used in the prevention of recurrent venous thromboembolism (VTE), including that associated with thrombophilia. The efficacy of DOACs in thrombophilic patients, especially those with severe trombophilia or triple positive antiphospholipid syndrome (APS) with arterial thromboembolic events, remains controversial. Most case reports and case series indicate that DOACs are an attractive therapeutic option in the vast majority of these patients at high risk of recurrent VTE with more concerns raised in high-risk APS patients and these deficient in protein S (PS)...
November 2016: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/27988438/detection-of-lupus-anticoagulant-in-the-era-of-direct-oral-anticoagulants
#15
REVIEW
Ariela Hoxha, Alessandra Banzato, Amelia Ruffatti, Vittorio Pengo
Lupus anticoagulant (LAC) is an in vitro phenomenon determining a phospholipid-dependent elongation of clotting times. The presence of LAC associated with anticardiolipin (aCL) and anti-β2 glycoprotein I (anti-β2GPI) antibodies is strongly associated with thrombosis and pregnancy morbidity. Direct oral anticoagulants (DOACs) targeting thrombin and factor Xa are currently widely use to prevent and treat venous and arterial thromboembolism. Some concern has, however, been expressed about the possibility of false laboratory results during LAC assessment in patients taking these drugs...
February 2017: Autoimmunity Reviews
https://www.readbyqxmd.com/read/27981815/the-role-of-clinically-significant-antiphospholipid-antibodies-in-systemic-lupus-erythematosus
#16
M Taraborelli, M G Lazzaroni, N Martinazzi, M Fredi, I Cavazzana, F Franceschini, A Tincani
The objective is to investigate the role of clinically significant antiphospholipid antibodies (aPL) in a cohort of systemic lupus erythematosus (SLE) patients. All SLE patients followed for at least 5 years and with available aPL profile at the beginning of the follow-up in our center were studied. Clinically significant aPL were defined as: positive lupus anticoagulant test, anti-cardiolipin and/or anti- β2Glycoprotein I IgG/IgM >99th percentile on two or more occasions at least 12 weeks apart. Patients with and without clinically significant aPL were compared by univariate (Chi square or Fisher's exact test for categorical variables and Student's t or Mann-Whitney test for continuous variables) and multivariate analysis (logistic regression analysis)...
December 16, 2016: Reumatismo
https://www.readbyqxmd.com/read/27913551/what-is-the-role-of-hydroxychloroquine-in-reducing-thrombotic-risk-in-patients-with-antiphospholipid-antibodies
#17
Tzu-Fei Wang, Wendy Lim
A 35-year-old man presents with an acute unprovoked deep vein thrombosis of the left lower extremity. He is treated with anticoagulation and elects to discontinue treatment after 6 months. He subsequently develops polyarthralgias, fatigue, and a malar rash, and a diagnosis of systemic lupus erythematosus is made based on laboratory and clinical findings. Additional laboratory testing reveals persistent triple positive antiphospholipid antibodies, including lupus anticoagulant, high titer anticardiolipin antibodies, and anti-β2-glycoprotein I antibodies...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27862892/lupus-anticoagulant-hypoprothrombinemia-syndrome-associated-with-severe-thrombocytopenia-in-a-child
#18
Aimee Foord, Nicole Baca, David Buchbinder, Arash Mahajerin
Lupus anticoagulant hypoprothrombinemia syndrome (LAHPS) comprises lupus anticoagulant, acquired hypoprothrombinemia, and often mild thrombocytopenia or normal platelets. It is usually associated with autoimmunity or postviral illness. We describe a case of a 10-year-old boy with oral bleeding and severe thrombocytopenia initially suggestive of immune thrombocytopenia. Secondary to bleeding, evaluation demonstrated prolonged coagulation tests and subsequently revealed the presence of lupus anticoagulant and hypoprothrombinemia, along with marked autoimmunity, suggestive of LAHPS...
November 15, 2016: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/27861383/living-donor-renal-transplantation-in-patients-with-antiphospholipid-syndrome-a-case-report
#19
Ji Yoon Choi, Joo Hee Jung, Sung Shin, Young Hoon Kim, Duck Jong Han
INTRODUCTION: Antiphospholipid syndrome (APS), autoantibodies directed against phospholipid-binding proteins are associated with cause vascular thrombosis. Patients with APS requiring renal transplantation are at risk of early graft loss due to arterial or venous thrombosis, or thrombotic microangiopathy (TMA). Here, we report 3 cases of successful renal transplantation in patients with APS. CLINICAL FINDINGS: A 53-year-old man with end-stage renal disease (ESRD) had experienced bilateral deep venous thrombosis (DVT) in the lower extremities 16 years ago and was administered warfarin...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27854095/cerebral-venous-sinus-thrombosis-in-a-patient-with-sj%C3%A3-gren-s-syndrome-with-atypical-antibodies-a-case-report
#20
Tsung-Han Ho, Yu-Wei Hsu, Chih-Wei Wang, Jiunn-Tay Lee, Chi-Hsin Ting, Fu-Chi Yang
BACKGROUND: Although Sjögren's syndrome has been known to complicate with white matter lesions, encephalopathy, or stroke, reports of cerebral venous sinus thrombosis due to Sjögren's syndrome with atypical antibodies are rare. CASE REPORT: A 50-year-old woman was admitted to our neurological ward with nausea and vomiting following acute onset of severe headache in the left occipital region. Brain computed tomography revealed no abnormalities. The patient was fully conscious, with normal cognitive functioning, but exhibited unsteady tandem gait...
June 15, 2016: Acta Neurologica Taiwanica
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