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Antiphospholipid antibodies

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https://www.readbyqxmd.com/read/29350259/diminished-expression-of-%C3%AE-2-gpi-is-associated-with-a-reduced-ability-to-mitigate-complement-activation-in-anti-gpiib-iiia-mediated-immune-thrombocytopenia
#1
Xiaolu Zhu, Jiamin Zhang, Qianming Wang, Haixia Fu, Yingjun Chang, Yuan Kong, Meng Lv, Lanping Xu, Kaiyan Liu, Xiaojun Huang, Xiaohui Zhang
Anti-GPIIb/IIIa-mediated complement activation has been reported to be important in the pathogenesis of immune thrombocytopenia (ITP). However, the role of the complement system and the involved regulatory mechanism remain equivocal. Beta2-glycoprotein I (β2-GPI), known as the main target for antiphospholipid autoantibodies, has been demonstrated as a complement regulator. Here, we investigated the complement-regulatory role of β2-GPI in anti-GPIIb/IIIa-mediated ITP. Plasma complement activation and enhanced complement activation capacity (CAC) were found in ITP patients with anti-GPIIb/IIIa antibodies in vivo and in vitro...
December 29, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/29348275/microangiopathies-in-pregnancy
#2
Jailan Elayoubi, Kavitha Donthireddy, Divyesh Reddy Nemakayala
Thrombotic thrombocytopenic purpura (TTP) is a potentially reversible, life-threatening medical emergency. We present a case of a 21-year-old female with evidence of haemolytic anaemia based on the presence of positive markers of haemolysis. Negative Coomb's test, thrombocytopenia and placental infarcts raised suspicion for a thrombotic microangiopathy. She was diagnosed with TTP and managed with emergency plasma exchange. Her recovery was immediate.A presumptive diagnosis of TTP should be based on the presence of microangiopathic haemolytic anaemia with thrombocytopenia and plasma exchange should be initiated while complete work up is pending...
January 17, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29346631/anticardiolipin-antibodies-and-12-month-graft-function-in-kidney-transplant-recipients-a-prognosis-cohort-survey
#3
Marion Gauthier, Florence Canoui-Poitrine, Esther Guéry, Dominique Desvaux, Sophie Hue, Guillaume Canaud, Thomas Stehle, Philippe Lang, Tomek Kofman, Philippe Grimbert, Marie Matignon
Background: In kidney transplant recipients, anticardiolipin (ACL) antibodies without antiphospholipid syndrome (APS) are found in up to 38% of patients and could be associated with thrombotic events (TEs). However, the prognostic role of ACL regarding kidney transplant and patients outcomes have still not been well defined. Methods: We conducted an observational, monocentric, retrospective cohort study including 446 kidney transplant recipients and standardized follow-up: 36-month allograft and patient survival, 12-month estimated glomerular filtration rate (eGFR) and 3- and 12-month screening biopsies...
January 16, 2018: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29342502/antiphospholipid-antibodies-inhibit-trophoblast-toll-like-receptor-and-inflammasome-negative-regulators
#4
Melissa J Mulla, Ingrid C Weel, Julie A Potter, Stefan M Gysler, Jane E Salmon, Maria T S Peraçoli, Carla V Rothlin, Lawrence W Chamley, Vikki M Abrahams
OBJECTIVE: Women with antiphospholipid antibodies (aPL) are at risk for pregnancy complications associated with poor placentation and placental inflammation. While these antibodies are heterogeneous, some anti-β2 GPI antibodies can activate human first trimester trophoblast TLR4 and NLRP3. The objective of this study was to determine the role of negative regulators of TLR and inflammasome function in aPL-induced trophoblast inflammation. METHODS: Human trophoblast cells were treated with or without anti-β2 GPI aPL or control IgG in the presence or absence of the common TAM receptor ligand, GAS6, or the autophagy inducer, rapamycin...
January 17, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29339317/arterial-stenosis-in-antiphospholipid-syndrome-update-on-the-unrevealed-mechanisms-of-an-endothelial-disease
#5
REVIEW
Ghita Harifi, Wared Nour-Eldine, Mohammad Hassan A Noureldine, Mohammad Baker Berjaoui, Romy Kallas, Rita Khoury, Imad Uthman, Jamal Al-Saleh, Munther A Khamashta
First described in 1983, antiphospholipid syndrome (APS) is an autoimmune condition characterized by the occurrence of recurrent arterial and/or venous thrombosis, and/or pregnancy morbidity, in the setting of persistent presence of antiphospholipid antibodies (aPL). While thrombosis is the most well-known pathogenic mechanism in this disorder, the relevance of some other mechanisms such as arterial stenosis is being increasingly recognized. Arterial stenosis has been first described in the renal arteries in patients with APS, however intracranial and coeliac arteries can also be involved with various and treatable clinical manifestations...
January 12, 2018: Autoimmunity Reviews
https://www.readbyqxmd.com/read/29338587/antiphosphatidylserine-prothrombin-aps-pt-antibodies-are-associated-with-raynaud-phenomenon-and-migraine-in-primary-thrombotic-antiphospholipid-syndrome
#6
M Kopytek, J Natorska, A Undas
Objectives Antibodies to phosphatidylserine/prothrombin complex (aPS/PT) detectable in sera of some patients with antiphospholipid syndrome (APS) have been shown to correlate with thrombosis. However, associations of aPS/PT antibodies with APS related disorders remain unclear. Aim To evaluate whether there are any associations between aPS/PT antibodies and Raynaud phenomenon, migraine and/or valvular lesions in primary thrombotic APS (PAPS). Methods We enrolled 67 consecutive patients (56 women) with thrombotic PAPS (VTE in 80...
January 1, 2018: Lupus
https://www.readbyqxmd.com/read/29321641/antiphospholipid-syndrome
#7
REVIEW
Karen Schreiber, Savino Sciascia, Philip G de Groot, Katrien Devreese, Soren Jacobsen, Guillermo Ruiz-Irastroza, 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/29321442/acquired-von-willebrand-syndrome-due-to-aortic-valve-stenosis-in-a-case-with-antiphospholipid-antibody
#8
Hiroaki Tanaka, Yurie Nagai, Chihiro Kuwabara, Ryo Shimizu, Akihide Umeki, Tetsufumi Yamamoto
Acquired von Willebrand syndrome (AVWS) is a bleeding disorder caused by an acquired deficiency of von Willebrand factor (vWF). Some patients with AVWS show a low bleeding tendency and are diagnosed by the presence of a mild prolongation of activated partial thromboplastin time (APTT) preoperatively. Another cause of APTT prolongation is the presence of antiphospholipid antibody (aPL). We experienced a case of AVWS due to aortic valve stenosis in a patient with aPL in whom aortic valve replacement surgery was successful with vWF replacement...
January 11, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29321405/reversible-parkinsonism-and-multiple-cerebral-infarctions-after-pulmonary-endarterectomy-in-a-patient-with-antiphospholipid-syndrome
#9
Mitsumasa Okano, Kazuhiko Nakayama, Naoki Tamada, Yuto Shinkura, Ken-Ichi Yanaka, Hiroyuki Onishi, Hidekazu Tanaka, Toshiro Shinke, Hiroshi Tanaka, Yutaka Okita, Noriaki Emoto, Ken-Ichi Hirata
Antiphospholipid syndrome (APS) is a cause of chronic thromboembolic pulmonary hypertension (CTEPH) and it is associated with an increased risk of postoperative neurological complications. We experienced a case of reversible parkinsonism after pulmonary endarterectomy (PEA) and subsequent multiple cerebral infarctions under standard anticoagulation therapy in a patient with CTEPH associated with APS. Strict management using a combination of antiplatelet and anticoagulation therapy should be considered in patients with a high titer of triple antiphospholipid antibodies in the perioperative period...
January 11, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29316368/rash-fever-and-pulmonary-hypertension-in-a-6-year-old-female
#10
David Buchbinder, Gina A Montealegre Sanchez, Raphaela Goldbach-Mansky, Hermine Brunner, Andrew I Shulman
A previously healthy 2-year-old Guatemalan female with an undiagnosed chronic illness characterized by fever and rash had presented with anorexia, weight loss, periorbital edema, abdominal pain and distention. A chest radiograph documented cardiomegaly. An echocardiogram demonstrated a pericardial effusion, dilated right atrium, right ventricle, and main pulmonary artery as well as diminished right ventricular systolic function and pulmonary hypertension. Right ventricular systolic pressure was estimated at 90 mmHg...
January 5, 2018: Arthritis Care & Research
https://www.readbyqxmd.com/read/29308775/a-case-of-immune-thrombocytopenic-purpura-with-prolonged-aptt-time-a-clotter-hidden-in-a-bleeder
#11
M H Lee, P J Khoo, L T Gew, C F Ng
We report the case of a 23-year-old woman who presented with prolonged menstruation and multiple bruises on the limbs and trunk. Investigations revealed severe thrombocytopenia and deranged coagulation profile with markedly prolonged activated partial thromboplastin time (aPTT). Lupus anticoagulant, anti-cardiolipin antibody and anti-beta-2-glycoprotein 1 antibody were positive. She was diagnosed with Immune Thrombocytopenic Purpura (ITP) with positive antiphospholipid antibody serology and given a course of intravenous methylprednisolone and tapering doses of oral prednisolone...
December 2017: Medical Journal of Malaysia
https://www.readbyqxmd.com/read/29305562/possible-relationship-between-antiphospholipid-antibodies-and-embolic-events-in-infective-endocarditis
#12
Christine Selton-Suty, Charles-Henry Maigrat, Jean Devignes, François Goehringer, Marie-Line Erpelding, François Alla, Carine Thivilier, Olivier Huttin, Clément Venner, Yves Juilliere, Thanh Doco-Lecompte, Thomas Lecompte
OBJECTIVE: Antiphospholipid (aPL) antibodies may activate platelets and contribute to vegetation growth and embolisation in infective endocarditis (IE). We aimed to determine the value of aPL as predictors of embolic events (EE) in IE. METHODS: We studied 186 patients with definite IE (Duke-Li criteria, all types of IE) from the Nanc-IE prospective registry (2007-2012) who all had a frozen blood sample and at least one imaging procedure to detect asymptomatic or confirm symptomatic EE...
January 5, 2018: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29302904/acute-kidney-injury-in-pregnancy-with-special-reference-to-pregnancy-specific-disorders-a-hospital-based-study-2014-2016
#13
Jai Prakash, Vivek C Ganiger, Suraj Prakash, Mohammad Iqbal, Deba Prasad Kar, Usha Singh, Ashish Verma
INTRODUCTION: There are numerous reports in the literature describing acute kidney injury in pregnancy (P-AKI) due to various obstetric complications. However, there is a dearth of studies on AKI related to pregnancy-specific disorders from India. We aimed to analyze clinical features and outcome of P-AKI related to pregnancy-specific disorders compared to total pregnancy, in India. METHOD: All pregnant women attending the department of Obstetrics and Gynecology from November 2014 to July 2016 were screened for AKI based on: (1) sudden elevation of serum creatinine ≥ 1 mg/dl; (2) oligoanuria for > 12 h; and (3) need for dialysis...
January 4, 2018: Journal of Nephrology
https://www.readbyqxmd.com/read/29301920/risk-factors-for-recurrent-venous-thromboembolism-after-unprovoked-pulmonary-embolism-the-padis-pe-randomised-trial
#14
Cécile Tromeur, Olivier Sanchez, Emilie Presles, Gilles Pernod, Laurent Bertoletti, Patrick Jego, Elisabeth Duhamel, Karine Provost, Florence Parent, Philippe Robin, Lucile Deloire, Florent Leven, Fanny Mingant, Luc Bressollette, Pierre-Yves Le Roux, Pierre-Yves Salaun, Michel Nonent, Brigitte Pan-Petesch, Benjamin Planquette, Philippe Girard, Karine Lacut, Solen Melac, Patrick Mismetti, Silvy Laporte, Guy Meyer, Dominique Mottier, Christophe Leroyer, Francis Couturaud
We aimed to identify risk factors for recurrent venous thromboembolism (VTE) after unprovoked pulmonary embolism.Analyses were based on the double-blind randomised PADIS-PE trial, which included 371 patients with a first unprovoked pulmonary embolism initially treated during 6 months who were randomised to receive an additional 18 months of warfarin or placebo and followed up for 2 years after study treatment discontinuation. All patients had ventilation/perfusion lung scan at inclusion (i.e. at 6 months of anticoagulation)...
January 2018: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/29301476/the-cutaneous-manifestations-are-significantly-related-to-cerebrovascular-in-a-serbian-cohort-of-patients-with-hughes-syndrome
#15
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)...
January 1, 2018: Lupus
https://www.readbyqxmd.com/read/29301475/frequency-of-psychological-alterations-in-primary-antiphospholipid-syndrome-preliminary-study
#16
M Sadetski, M L Tourinho Moretto, R P Correia de Araujo, J F de Carvalho
Objectives To detect the frequency of psychological alterations in primary antiphospholipid syndrome patients. Methods Thirty-six primary antiphospholipid syndrome patients were analyzed by a psychological interview using a standard protocol and review of medical charts. Clinical manifestations, associated comorbidities, antiphospholipid antibodies, and treatment were also evaluated. Results The mean age was 44.2 ± 10.8 years, 29 (80%) were women and 29 (80%) were of Caucasian race. The mean duration of disease was 7...
January 1, 2018: Lupus
https://www.readbyqxmd.com/read/29296881/recurrent-thrombosis-in-patients-with-antiphospholipid-antibodies-and-arterial-thrombosis-on-antithrombotic-therapy
#17
William G Jackson, Clara Oromendia, Ozan Unlu, Doruk Erkan, Maria T DeSancho
Management for patients with antiphospholipid syndrome (APS) and arterial thrombosis is controversial. There are no prospective data demonstrating the superiority of high- or moderate-intensity anticoagulation with vitamin K antagonists over antiplatelet agents. Using 2 antiphospholipid antibody databases (single center [New York Presbyterian Hospital] and multicenter [Antiphospholipid Syndrome Alliance for Clinical Trials and International Networking]), we retrospectively collected demographic and clinical data of patients with APS and arterial thrombosis...
November 28, 2017: Blood Advances
https://www.readbyqxmd.com/read/29285465/primary-antiphospholipid-antibody-syndrome-presenting-as-unilateral-adrenal-hemorrhage
#18
Shruti Khare, Hardik Patel, Gargey Sutaria, Reena Sharma
No abstract text is available yet for this article.
November 2017: Indian Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29284338/catastrophic-antiphospholipid-syndrome-and-pregnancy-clinical-report
#19
J Khizroeva, V Bitsadze, A Makatsariya
We have observed the development of a catastrophic antiphospholipid syndrome (CAPS) in a pregnant woman hospitalized at 28 weeks of gestation with a severe preeclampsia. On the same day, an eclampsia attack developed, and an emergency surgical delivery was performed. On the third day, multiorgan failure developed. Examination showed a persistent circulation of lupus anticoagulant, high level of antibodies to cardiolipin, b2-glycoprotein I, and prothrombin. The usual diagnosis of the severe preeclampsia masked a catastrophic antiphospholipid syndrome, exacerbated by the coincident presence of several types of antiphospholipid antibodies...
December 28, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29280819/gangrene-of-all-digits-and-toes-attributable-to-systemic-lupus-erythematosus-with-negative-antiphospholipid-antibodies
#20
Jan René Nkeck, Francky Teddy A Endomba, Aude Laetitia Ndoadoumgue, Fabien Bidimicka Kalbassou
No abstract text is available yet for this article.
December 27, 2017: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
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