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lupus anticoagulant testing

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https://www.readbyqxmd.com/read/29772490/effects-of-multiple-inherited-and-acquired-thrombophilia-on-outcomes-of-in-vitro-fertilization
#1
Marcello Di Nisio, Adalisa Ponzano, Gian Mario Tiboni, Maria Domenica Guglielmi, Anne Wilhelmina Saskia Rutjes, Ettore Porreca
INTRODUCTION: The effects of multiple inherited and acquired thrombophilic defects on the outcome of in-vitro fertilization (IVF) remain unexplored. The aim of this study was to evaluate the association between multiple thrombophilia and clinical outcomes in a large prospective cohort of women undergoing IVF. MATERIALS AND METHODS: Consecutive women scheduled for IVF were eligible. The primary study outcome was live birth. Secondary outcomes included spontaneous abortion, clinical pregnancy, and symptomatic venous thromboembolism...
May 9, 2018: Thrombosis Research
https://www.readbyqxmd.com/read/29756268/does-rotational-thromboelastometry-accurately-predict-coagulation-status-in-patients-with-lupus-anticoagulant
#2
L Hensch, V Kostousov, K Bruzdoski, M Losos, M Pereira, M de Guzman, S Hui, J Teruya
INTRODUCTION: Rotational thromboelastometry (ROTEM) is increasingly used as a tool for monitoring coagulation status. However, ROTEM is susceptible to misinterpretation due to particular coagulation abnormalities. Here, we report the effects of lupus anticoagulant (LA) on ROTEM. METHODS: A prospective observational analysis was performed on 16 children with prior studies indicating the presence of LA or antiphospholipid antibodies. ROTEM analysis was performed, and samples were further analyzed by adding phospholipids (PL) to repeat ROTEM analysis if clotting time (CT) abnormalities were discovered with comparison to ROTEM using an equal volume of isotonic saline...
May 13, 2018: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/29731081/prevalence-of-antiphospholipid-antibody-positivity-and-association-of-pretransplant-lupus-anticoagulant-positivity-with-early-allograft-dysfunction-in-liver-transplantation
#3
H-M Kwon, K-W Jung, Y-J Moon, H-W Jung, Y-S Park, I-G Jun, J-G Song, G-S Hwang
BACKGROUND: Antiphospholipid antibodies (aPL), including anticardiolipin (aCL), anti-β2 -glycoprotein I (anti-β2GPI), and lupus anticoagulant (LA) antibodies, are frequently found in liver cirrhosis and associated with splanchnic vein thrombosis. Although the risk factors of early allograft dysfunction (EAD) are known, the association between EAD and aPL has been poorly investigated. We hypothesized that LA, potent aPL with thrombotic potential, may be associated with EAD development after living donor liver transplantation (LDLT)...
May 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29723209/cognitive-dysfunction-improves-in-systemic-lupus-erythematosus-results-of-a-10-years-prospective-study
#4
Fulvia Ceccarelli, Carlo Perricone, Carmelo Pirone, Laura Massaro, Cristiano Alessandri, Concetta Mina, Massimo Marianetti, Francesca Romana Spinelli, Guido Valesini, Fabrizio Conti
OBJECTIVE: Cognitive impairment (CI) has been described in 3-80% of Systemic lupus erythematosus (SLE) patients but only short-term studies evaluated its over-time changes, suggesting that CI is usually a stable finding. We aimed at evaluating the changes of SLE-related CI in a 10-years prospective single center cohort study. METHODS: We evaluated 43 patients (M/F 5/38; mean age = 45.7±10.1 years; mean disease duration = 230.8±74.3 months) at baseline (T0) and after 10 years (T1)...
2018: PloS One
https://www.readbyqxmd.com/read/29708898/activated-partial-thromboplastin-time-derivative-curves-helpful-diagnostic-tool-in-mixing-test-interpretation
#5
Sevim Esmedere Eren, Cigdem Karakukcu, Mehmet Z Ciraci, Yasemin Ustundag, Musa Karakukcu
: The mixing test is used to evaluate whether prolonged activated partial thromboplastin time (APTT) is due to an inhibitor or a factor deficiency. The coagulation reaction is demonstrated with APTT derivative curves on the ACL TOP series. We aimed to determine the utility of APTT derivative curves in the mixing test process. The plasma of a patient was mixed with normal plasma in a 1 : 1 ratio and APTT assay was performed with SynthASil reagent. We observed roughness, biphasic and shoulder patterns in derivative curves during the mixing test...
April 27, 2018: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/29627719/interference-of-doacs-in-different-drvvt-assays-for-diagnosis-of-lupus-anticoagulants
#6
T Flieder, M Weiser, Th Eller, M Dittrich, K von Bargen, S Alban, J Kuhn, C Knabbe, I Birschmann
OBJECTIVE: Determination of lupus anticoagulants (LA) is an important, but still challenging test in the diagnosis of antiphospholipid syndrome (APS). This is especially the case in patients using one of the direct oral anticoagulants (DOACs). The aim of our study was to examine the influence of these drugs on DRVVT assays from two companies (in each case: screening test, confirming test and calculated ratio) and on aPTT and lupus-sensitive aPTT. METHODS: We used plasma samples from healthy volunteers spiked with the DOACs dabigatran, rivaroxaban and apixaban (0, 10, 30, 50, 100 ng/mL) for testing...
March 21, 2018: Thrombosis Research
https://www.readbyqxmd.com/read/29624078/the-effect-of-3-2-and-3-8-sodium-citrate-on-specialized-coagulation-tests
#7
Franz Ratzinger, Mona Lang, Sabine Belik, Klaus G Schmetterer, Helmuth Haslacher, Thomas Perkmann, Peter Quehenberger
CONTEXT: - Coagulation testing is challenging and depends on preanalytic factors, including the citrate buffer concentration used. OBJECTIVE: - To better estimate preanalytic effects of the citrate buffer concentration in use, the difference between results obtained by samples with 3.2% and 3.8% citrate was evaluated. DESIGN: - In a prospective observational study with 76 volunteers, differences related to the citrate concentration were evaluated...
April 6, 2018: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/29581905/antiphospholipid-antibody-induced-by-nivolumab
#8
Ahmed Aburahma, Nour Aljariri Alhesan, Farah Elounais, Emad Abu Sitta
Nivolumab is a monoclonal antibody against the programmed death protein 1 and is used for patients with advanced melanoma. It is associated with potentially immune-related adverse events, including disorders of the skin, GI tract, and the thyroid; these disorders were successfully treated with prednisone and infliximab. Other immunotherapeutic agents were observed to induce the formation of antiphospholipid antibody (APA) including α -interferon and interleukin-2. We present a case of APA development after the third dose of nivolumab in a 71-year-old male with advanced melanoma...
2018: Case Reports in Hematology
https://www.readbyqxmd.com/read/29541945/anticoagulation-management-during-cardiopulmonary-bypass-in-patients-with-antiphospholipid-syndrome
#9
Tatsuya Seki, Yasushige Shingu, Hiroshi Sugiki, Satoru Wakasa, Hiroki Katoh, Tomonori Ooka, Tsuyoshi Tachibana, Suguru Kubota, Yoshiro Matsui
Antiphospholipid syndrome (APS) is a complex autoimmune disease often related to systemic lupus erythematosus. Although adequate anticoagulation is important for APS patients during cardiopulmonary bypass, clotting tests can be potentially misleading due to antiphospholipid antibodies. We performed cardiac surgery safely in two APS patients under anticoagulation monitoring determined using preoperative heparin titration. We performed heparin titration for activated clotting time to determine the appropriate heparin concentration during cardiac surgery...
March 14, 2018: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://www.readbyqxmd.com/read/29538673/recurrent-pregnancy-loss-evaluation-combined-with-24-chromosome-microarray-of-miscarriage-tissue-provides-a-probable-or-definite-cause-of-pregnancy-loss-in-over-90-of-patients
#10
F Popescu, C R Jaslow, W H Kutteh
STUDY QUESTION: Will the addition of 24-chromosome microarray analysis on miscarriage tissue combined with the standard American Society for Reproductive Medicine (ASRM) evaluation for recurrent miscarriage explain most losses? SUMMARY ANSWER: Over 90% of patients with recurrent pregnancy loss (RPL) will have a probable or definitive cause identified when combining genetic testing on miscarriage tissue with the standard ASRM evaluation for recurrent miscarriage...
April 1, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29518638/thrombophilia-testing-in-children-what-and-when-should-be-tested
#11
REVIEW
Ulrike Nowak-Göttl, Heleen van Ommen, Gili Kenet
Venous thrombosis (VTE) in children is gaining increased awareness and apart from underlying medical conditions, recently reported systematic reviews on pediatric VTE (70% provoked) have shown significant associations between thrombosis and presence of inherited thrombophilic risk factors (IT), such as protein C-, protein S- and antithrombin deficiency, mutations of factor 5 (F5: rs6025) and factor 2 (F2: rs1799963), even more pronounced when combined IT were involved. Although we have learned more about the pathophysiology of VTE with the increased discovery of IT evidence is still lacking as to whether IT influence the clinical outcome in pediatric VTE...
April 2018: Thrombosis Research
https://www.readbyqxmd.com/read/29490924/antiphospholipid-antibodies-and-recurrent-thrombosis-after-a-first-unprovoked-venous-thromboembolism
#12
Clive Kearon, Sameer Parpia, Frederick A Spencer, Trevor Baglin, Scott M Stevens, Kenneth A Bauer, Steven R Lentz, Craig M Kessler, James D Douketis, Stephan Moll, Scott Kaatz, Sam Schulman, Jean M Connors, Jeffrey S Ginsberg, Luciana Spadafora, Vinai Bhagirath, Patricia C Liaw, Jeffrey I Weitz, Jim A Julian
It is uncertain whether antiphospholipid antibodies (APAs) increase the risk of recurrence after a first unprovoked venous thromboembolism (VTE). We tested for anticardiolipin antibodies, anti-β2 glycoprotein 1 antibodies, and lupus anticoagulant on 2 occasions ∼6 months apart in 307 patients with a first unprovoked VTE who were part of a prospective cohort study. We then determined if APAs were associated with recurrent thrombosis in the 290 patients who stopped anticoagulant therapy in response to negative D-dimer results...
May 10, 2018: Blood
https://www.readbyqxmd.com/read/29484705/what-should-be-the-laboratory-approach-against-isolated-prolongation-of-a-activated-partial-thromboplastin-time
#13
Mesude Falay, Mehmet Senes, Dogan Yücel, Turan Turhan, Simten Dagdaş, Melike Pekin, Namik K Nazaroglu, Gülsüm Özet
BACKGROUND: This study is a retrospective evaluation of patients who were subject to mixing study in our laboratory due to prolonged APTT. The preliminary diagnoses, clinical manifestations, and results of additional ordered tests were reviewed. The study aims to investigate whether repeating APTT test with a different assay prior to performing mixed study in patients with prolonged APTT would be a better alternative algorithmic approach in order to save both time and costs. METHODS: We retrospectively evaluated 166 patients (65 females and 101 males) who were subject to mixing study due to isolated prolonged APTT...
February 27, 2018: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/29407622/simple-method-for-removing-doacs-from-plasma-samples
#14
T Exner, N Michalopoulos, J Pearce, R Xavier, M Ahuja
AIM: To evaluate a simple method using an adsorbent product (DOAC Stop) for extracting direct oral anti-coagulants (DOACs) from plasmas. METHOD: DOAC Stop was tested on normal and a range of abnormal plasmas initially using activated partial thromboplastin time (APTT) tests and a more DOAC-sensitive Russells viper venom-based clotting test (DOAC Test). Further tests for prothrombin time/International Normalized Ratio (PT/INR), lupus anticoagulants, activated protein C (APC) resistance, antithrombin, plasminogen, protein C and S were carried out on various patient samples...
March 2018: Thrombosis Research
https://www.readbyqxmd.com/read/29356700/the-effects-of-transport-temperature-and-time-on-routine-and-specialized-coagulation-assays
#15
Yeowon A Kim, Kent B Lewandrowski, Fils-Amie Lucien, Elizabeth M Van Cott
: Coagulation laboratories have largely stopped transporting whole blood specimens on ice, due to adverse effects on factor VIII, von Willebrand factor, and the prothrombin time. However, it is unknown whether ice should be required or avoided for other coagulation assays. Furthermore, the amount of time that specimens remain stable during transportation at room temperature (RT) is also largely unknown for many coagulation tests. Therefore, this study investigated specimen stability on ice and RT for a comprehensive panel of coagulation tests...
March 2018: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/29321641/antiphospholipid-syndrome
#16
REVIEW
Karen Schreiber, Savino Sciascia, Philip G de Groot, Katrien Devreese, Soren Jacobsen, Guillermo Ruiz-Irastorza, Jane E Salmon, Yehuda Shoenfeld, Ora Shovman, Beverley J Hunt
Antiphospholipid syndrome (APS) is an autoimmune disease characterized by the presence of antiphospholipid antibodies, such as lupus anticoagulant, anticardiolipin antibodies and anti-β2-glycoprotein 1 antibodies. APS can present with a variety of clinical phenotypes, including thrombosis in the veins, arteries and microvasculature as well as obstetrical complications. The pathophysiological hallmark is thrombosis, but other factors such as complement activation might be important. Prevention of thrombotic manifestations associated with APS includes lifestyle changes and, in individuals at high risk, low-dose aspirin...
January 11, 2018: Nature Reviews. Disease Primers
https://www.readbyqxmd.com/read/29320975/systemic-lupus-erythematosus-with-inflammatory-bowel-disease-ulcerative-colitis-case-report
#17
H Elsayed Mansour, S Gamal Arafa, W Abdelfatah Shehata
A 30-year-old female presented to the rheumatology outpatient clinic of the Internal Medicine Department, Ain Shams University Hospital, Cairo, Egypt, complaining of a large right leg ulcer consistent with pyoderma gangrenosum. There was history of recurrent attacks of bleeding per rectum of one-year duration. During hospitalization she noticed blurring of vision in the left eye with diffuse blackish discoloration of the feet and toes, consistent with small-vessel vasculitis. Colonoscopy with biopsy and histopathology confirmed the diagnosis of inflammatory bowel disease-ulcerative colitis (IBD-UC)...
June 2018: Lupus
https://www.readbyqxmd.com/read/29301476/the-cutaneous-manifestations-are-significantly-related-to-cerebrovascular-in-a-serbian-cohort-of-patients-with-hughes-syndrome
#18
L Stojanovich, A Djokovic, N Stanisavljevic, M Zdravkovic
Objectives To investigate a possible relationship between cerebrovascular, such as stroke and transient ischaemic attack, and various cutaneous manifestations (livedo reticularis, skin ulcerations, pseudovasculitis lesions, superficial cutaneous necrosis and digital gangrene) in antiphospholipid syndrome (APS). This report is based on a Serbian cohort of APS patients. Methods A total of 508 antiphospholipid syndrome APS patients were assessed: 360 with primary (PAPS) and 148 with APS associated with SLE (SAPS)...
April 2018: Lupus
https://www.readbyqxmd.com/read/29166262/antiphosphatidylserine-prothrombin-antibodies-aps-pt-as-potential-diagnostic-markers-and-risk-predictors-of-venous-thrombosis-and-obstetric-complications-in-antiphospholipid-syndrome
#19
Hui Shi, Hui Zheng, Yu-Feng Yin, Qiong-Yi Hu, Jia-Lin Teng, Yue Sun, Hong-Lei Liu, Xiao-Bing Cheng, Jun-Na Ye, Yu-Tong Su, Xin-Yao Wu, Jin-Feng Zhou, Gary L Norman, Hui-Yun Gong, Xin-Ming Shi, Yi-Bing Peng, Xue-Feng Wang, Cheng-De Yang
BACKGROUND: The aim of the study was to determine the prevalence and clinical associations of antiphosphatidylserine/prothrombin antibodies (aPS/PT) with thrombosis and pregnancy loss in Chinese patients with antiphospholipid syndrome (APS) and seronegative APS (SNAPS). METHODS: One hundred and eighty six Chinese patients with APS (67 primary, 119 secondary), 48 with SNAPS, 176 disease controls (79 systemic lupus erythematosus [SLE], 29 Sjogren's syndrome [SS], 30 ankylosing spondylitis [AS], 38 rheumatoid arthritis [RA]) and 90 healthy donors were examined...
March 28, 2018: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/29162399/laboratory-assessment-of-activated-protein-c-resistance-factor-v-leiden-and-performance-characteristics-of-a-new-quantitative-assay
#20
REVIEW
Jean Amiral, Anne Marie Vissac, Jerard Seghatchian
Activated Protein C Resistance is mainly associated to a factor V mutation (RQ506), which induces a deficient inactivation of activated factor V by activated protein C, and is associated to an increased risk of venous and arterial thrombosis in affected individuals, caused by the prolonged activated factor V survival. Its prevalence is mainly in Caucasians (about 5%), and this mutation is absent in Africans and Asians. Presence of Factor V-Leiden is usually evidenced with clotting methods, using a two-step APTT assay performed without or with APC: prolongation of blood coagulation time is decreased if this factor is present...
December 2017: Transfusion and Apheresis Science
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