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Anti-phospholipid syndrome

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https://www.readbyqxmd.com/read/29343759/incorporation-of-iloprost-in-phospholipase-resistant-phospholipid-scaffold-enhances-its-barrier-protective-effects-on-pulmonary-endothelium
#1
Olga Oskolkova, Nicolene Sarich, Yufeng Tian, Grzegorz Gawlak, Fanyong Meng, Valery N Bochkov, Evgeny Berdyshev, Anna A Birukova, Konstantin G Birukov
Correction of barrier dysfunction and inflammation in acute lung injury (ALI) represents an important problem. Previous studies demonstrate barrier-protective and anti-inflammatory effects of bioactive lipid prostacyclin and its stable analog iloprost (ILO). We generated a phospholipase resistant synthetic phospholipid with iloprost attached at the sn-2 position (ILO-PC) and investigated its biological effects. In comparison to free ILO, ILO-PC caused sustained endothelial cell (EC) barrier enhancement, linked to more prolonged activation of Rap1 and Rac1 GTPases and their cytoskeletal and cell junction effectors: cortactin, PAK1, p120-catenin and VE-cadherin...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29342292/clinical-utility-of-the-global-anti-phospholipid-syndrome-score-for-risk-stratification-a-pooled-analysis
#2
Savino Sciascia, Massimo Radin, Giovanni Sanna, Irene Cecchi, Dario Roccatello, Maria Laura Bertolaccini
Objective: Recently, our group conceived a risk score for clinical manifestations of APS (the global APS score, or GAPSS) that takes into account the combination of independent cardiovascular risk factors and the aPL positivity profile. These include hyperlipidaemia, arterial hypertension, aCL, anti-β2 glycoprotein-I, aPS-PT and the LA. A complementary version, the adjusted GAPSS (aGAPSS), which excludes aPS-PT, was also designed. The aim of our study was to systematically review the literature to assess the clinical utility of the GAPSS and aGAPSS for risk stratification of any APS clinical manifestation...
January 12, 2018: Rheumatology
https://www.readbyqxmd.com/read/29324051/anti-il-8-antibody-potentiates-the-effect-of-exogenous-surfactant-in-respiratory-failure-caused-by-meconium-aspiration
#3
Pavol Mikolka, Jana Kopincova, Petra Kosutova, Maros Kolomaznik, Andrea Calkovska, Daniela Mokra
AIM: Meconium aspiration syndrome (MAS) is life-threatening respiratory failure of newborns which can be treated by exogenous surfactant. In response to meconium, increased levels of chemokine IL-8 (CXCL8) stimulate massive neutrophil infiltration of the lungs. Local accumulation and activation of neutrophils, on-going inflammation, lung edema, and oxidative damage contribute to inactivation of endogenous and therapeutically given surfactants. Therefore, we have hypothesized that addition of monoclonal anti-IL-8 antibody into exogenous surfactant can mitigate the neutrophil-induced local injury and the secondary surfactant inactivation and may finally result in improvement of respiratory functions...
January 11, 2018: Experimental Lung Research
https://www.readbyqxmd.com/read/29308695/circulating-microparticles-in-pregnant-patients-with-primary-anti-phospholipid-syndrome-an-exploratory-study
#4
E Campello, C M Radu, M Tonello, A Kuzenko, C Bulato, A Hoxha, E Mattia, L Spiezia, A Ruffatti, P Simioni
No abstract text is available yet for this article.
January 8, 2018: Scandinavian Journal of Rheumatology
https://www.readbyqxmd.com/read/29297243/treatment-failure-of-direct-oral-anticoagulants-in-anti-phospholipid-syndrome
#5
Sja Johnsen, M B Lauvsnes, R Omdal
No abstract text is available yet for this article.
January 3, 2018: Scandinavian Journal of Rheumatology
https://www.readbyqxmd.com/read/29229837/early-endosome-as-a-pathogenic-target-for-antiphosphatidylethanolamine-antibodies
#6
Songwang Hou, Heike Fölsch, Ke Ke, Joan Cook Mills, Rosalind Ramsey-Goldman, Ming Zhao
Phosphatidylethanolamine (PE) is a major phospholipid species with important roles in membrane trafficking and reorganization. Accumulating clinical data indicate that the presence of circulating antibodies against PE is positively correlated with the symptoms of antiphospholipid syndromes (APS), including thrombosis and repeated pregnancy loss. However, PE is generally sequestered inside a normal resting cell, and the mechanism by which circulating anti-PE antibodies access cellular PE remains unknown. The studies presented here were conducted with synthetic PE-binding agents, plasma samples from patients with anti-PE autoimmunity, and purified anti-PE antibodies...
December 26, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29201326/a-challenging-entity-multiple-sclerosis-or-collagen-tissue-disorders-a-case-series-of-6-patients
#7
Raida Ben Salah, Yosra Cherif, Faten Frikha, Dammak Chifaa, Mouna Snoussi, Moez Jallouli, Sameh Marzouk, Mhiri Chokri, Zouhir Bahloul
Background: Multiple sclerosis and other demyelinating processes are sometimes difficult to differentiate from the neurological involvement in autoimmune diseases. Distinguishing multiple sclerosis from other lesions due to autoimmune diseases is crucial to avoid unsuitable or delayed treatments. Methods: Charts of 6 patients diagnosed with mimicking multiple sclerosis between 1996 and 2014 were retrospectively assessed. Results: The mean age at diagnosis was 35±7 years...
2017: Caspian Journal of Internal Medicine
https://www.readbyqxmd.com/read/29193441/therapy-for-antiphospholipid-miscarriages-throwing-the-baby-out-with-the-bathwater
#8
Cecilia Beatrice Chighizola, Yehuda Shoenfeld, Pier Luigi Meroni
PROBLEM: The association of low molecular weight heparin (LMWH) with low-dose aspirin (LDASA) provides the therapeutic cornerstone of obstetric anti-phospholipid syndrome (APS). This combo approach is not effective in all patients, and few women still experience recurrences. METHOD OF STUDY: In an elegant in vitro study, Chiombori Quao and colleagues demonstrated that anti-phospholipid antibodies (aPL) affect the functionality of endometrial endothelial cells interfering with angiogenesis...
November 28, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/29126301/coagulation-testing-in-the-core-laboratory
#9
William E Winter, Sherri D Flax, Neil S Harris
Primary hemostasis begins with endothelial injury. VWF, produced by endothelial cells, binds to platelets and links them to subendothelial collagen. Platelet-derived ADP and thromboxane activate non-adhered platelets via their GPIIb/IIIa receptors, allowing these platelets to participate in platelet aggregation. Secondary hemostasis is initiated with the binding of factor VII to extravascular tissue factor (TF). Factors II, VII, IX and X are vitamin K-dependent factors. The role of vitamin K is to assist in the addition of gamma carboxylate groups to glutamic acids in the "GLA" domains of these factors...
November 8, 2017: Laboratory Medicine
https://www.readbyqxmd.com/read/29067844/clinical-feature-and-anti-phospholipid-antibody-profiles-of-pregnancy-failure-in-young-women-with-antiphospholipid-antibody-syndrome-treated-with-conventional-therapy
#10
Kayoko Kaneko, Shuko Mishima, Mikako Goto, Mari Mitsui, Shinji Tanigaki, Kenji Oku, Nobuaki Ozawa, Eisuke Inoue, Tatsuya Atsumi, Haruhiko Sago, Atsuko Murashima
OBJECTIVE: To elucidate clinical feature and anti-phospholipid antibody (aPL) profiles, including lupus anticoagulant (LA), anti-cardiolipin (CL) antibodies and anti-phosphatidylserine/prothrombin (PS/PT) antibodies, of pregnancy failure in patients with antiphospholipid antibody syndrome (APS) already treated with conventional therapy. MATERIALS AND METHODS: Thirty-four women with a history of pregnancy who were diagnosed with APS between 2008 and 2016 were included in the study...
October 25, 2017: Modern Rheumatology
https://www.readbyqxmd.com/read/28960143/antigenicity-analysis-of-human-parvovirus-b19-vp1u-protein-in-the-induction-of-anti-phospholipid-syndrome
#11
Chun-Yu Lin, Chun-Ching Chiu, Ju Cheng, Chia-Yun Lin, Ya-Fang Shi, Chun-Chou Tsai, Bor-Show Tzang, Tsai-Ching Hsu
Mounting evidence suggests a connection between human parvovirus B19 (B19) and autoimmune diseases, and especially an association between the B19-VP1 unique region (VP1u) and antiphospholipid syndrome (APS). However, little is known about the antigenicity of B19-VP1u in the induction of APS-like syndrome. To elucidate the antigenicity of B19-VP1u in the induction of APS, N-terminal truncated B19-VP1u (tVP1u) proteins were prepared to immunize Balb/c mice to generate antibodies against B19-tVP1u proteins. The secreted phospholipase A2 (sPLA2) activities and binding specificity of mice anti-B19-tVP1u antibodies with cardiolipin (CL) and beta-2-glycoprotein I (β2GPI) were evaluated by performing immunoblot, ELISA and absorption experiments...
September 29, 2017: Virulence
https://www.readbyqxmd.com/read/28837832/factors-associated-with-adverse-pregnancy-outcomes-in-women-with-antiphospholipid-syndrome-a-multicenter-study
#12
Masashi Deguchi, Hideto Yamada, Mayumi Sugiura-Ogasawara, Mamoru Morikawa, Daisuke Fujita, Akinori Miki, Shintaro Makino, Atsuko Murashima
The aim of this study was to understand the clinical features of antiphospholipid syndrome (APS)-complicated pregnancies and evaluate risk factors for the adverse pregnancy outcomes. This multicenter study evaluated live-birth rates according to therapy modality for APS and risk factors of pregnancy loss in 81 pregnancies. Risk factors for pregnancy complications, including premature delivery before 34 gestational weeks, hypertensive disorders of pregnancy, thrombocytopenia, and light-for-date neonate, were evaluated in 51 women who received low dose aspirin (LDA) plus unfractionated heparin (UFH) and delivered after 24 GW...
August 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28803708/anti-phospholipid-syndrome-current-opinion-on-mechanisms-involved-laboratory-characterization-and-diagnostic-aspects
#13
REVIEW
Jean Amiral, Marie Peyrafitte, Claire Dunois, Anne Marie Vissac, Jerard Seghatchian
Anti-phospholipid syndrome is a complex and severe clinical situation, associated with symptoms such as recurrent thrombosis, arterial or venous, at any site, pregnancy loss, and other related syndromes. These clinical burdens, are highly variable from patient to patient, and are associated with biological abnormalities, such as the presence of the Lupus Anticoagulant or phospholipid dependent antibodies, confirmed on two occasions at least 12 weeks apart. From the diagnosis standpoint, both, functional (clotting) or immunological assays, are difficult to standardize and to optimize, due to the absence of reference material, or a characteristic clinical group, and international reference preparations...
July 15, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28789672/challenges-in-the-diagnosis-and-management-of-anti-phospholipid-syndrome-a-case-from-cameroon
#14
Ahmadou M Jingi, Liliane Mfeukeu-Kuate, Aurel T Tankeu, Narcisse Assene Ateba, Edvine Wawo Yonta, Jean Jacques Noubiap
BACKGROUND: Anti-phospholipid syndrome (APLS) is a condition characterized by the presence of raised plasma levels of anti-phospholipid antibodies associated with thrombo-embolic disease and/or poor obstetrical outcomes in women. The epidemiology of APLS is unknown in most sub-Saharan African countries due to limited access to diagnosis tools. We report the case of APLS in a 29-year-old obese woman that was preceded by pre-eclampsia and fetal death. The diagnosis of APLS was made during a thrombo-embolic episode 4 years after the poor obstetrical outcome...
August 8, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28748111/dimerized-domain-v-of-beta2-glycoprotein-i-is-sufficient-to-upregulate-procoagulant-activity-in-pma-treated-u937-monocytes-and-require-intact-residues-in-two-phospholipid-binding-loops
#15
Alexey Kolyada, David A Barrios, Natalia Beglova
Upregulation of the procoagulant activity of monocytes by antibodies to beta2- glycoprotein I (β2GPI) is one of the mechanisms contributing to thrombosis in antiphospholipid syndrome. Current knowledge about receptors responsible for the upregulation of procoagulant activity by β2GPI/anti-β2GPI complexes and their binding sites on β2GPI is far from complete. We quantified the procoagulant activity expressed by phorbol 12-myristate 13-acetate (PMA)- differentiated U937 cells by measuring clotting kinetics in human plasma exposed to stimulated cells...
June 2017: Antibodies
https://www.readbyqxmd.com/read/28741233/how-to-identify-high-risk-aps-patients-clinical-utility-and-predictive-values-of-validated-scores
#16
REVIEW
Kenji Oku, Olga Amengual, Shinsuke Yasuda, Tatsuya Atsumi
PURPOSE OF REVIEW: Antiphospholipid syndrome (APS) is a clinical disorder characterised by thrombosis and/or pregnancy morbidity in the persistence of antiphospholipid (aPL) antibodies that are pathogenic and have pro-coagulant activities. Thrombosis in APS tends to recur and require prophylaxis; however, the stereotypical treatment for APS patients is inadequate and stratification of the thrombotic risks is important as aPL are prevalently observed in various diseases or elderly population...
August 2017: Current Rheumatology Reports
https://www.readbyqxmd.com/read/28711993/clinical-risk-assessment-in-the-antiphospholipid-syndrome-current-landscape-and-emerging-biomarkers
#17
REVIEW
Shruti Chaturvedi, Keith R McCrae
PURPOSE OF REVIEW: Laboratory criteria for the classification of antiphospholipid syndrome include the detection of a lupus anticoagulant and/or anticardiolipin and anti-β2-glycoprotein I antibodies. However, the majority of patients who test positive in these assays do not have thrombosis. Current risk-stratification tools are largely limited to the antiphospholipid antibody profile and traditional thrombotic risk factors. RECENT FINDINGS: Novel biomarkers that correlate with disease activity and potentially provide insight into future clinical events include domain 1 specific anti-β2GPI antibodies, antibodies to other phospholipids or phospholipid/protein antigens (such as anti-PS/PT), and functional/biological assays such as thrombin generation, complement activation, levels of circulating microparticles, and annexin A5 resistance...
July 2017: Current Rheumatology Reports
https://www.readbyqxmd.com/read/28655939/increased-anti-hsp60-and-anti-hsp70-antibodies-in-women-with-unexplained-recurrent-pregnancy-loss
#18
Miwa Matsuda, Aiko Sasaki, Keiko Shimizu, Yasuhiko Kamada, Soichi Noguchi, Yuji Hiramatsu, Mikiya Nakatsuka
 Vascular dysfunction has been reported in women with recurrent pregnancy loss (RPL). We investigated the severity of vascular dysfunction in non-pregnant women with RPL and its correlation with anti-heat shock protein (HSP) antibodies that are known to induce arteriosclerosis. We measured the serum anti-HSP60 antibodies, anti-HSP70 antibodies, and anti-phospholipid antibodies (APA) in 68 women with RPL and 29 healthy controls. Among the women with RPL, 14 had a diagnosis of antiphospholipid syndrome (APS), and in the remaining 54, the causes for RPL were unexplained...
June 2017: Acta Medica Okayama
https://www.readbyqxmd.com/read/28621046/impact-of-borderline-subclinical-hypothyroidism-on-subsequent-pregnancy-outcome-in-women-with-unexplained-recurrent-pregnancy-loss
#19
Sayaka Uchida, Tetsuo Maruyama, Maki Kagami, Fumie Miki, Hanako Hihara, Satomi Katakura, Yushi Yoshimasa, Hirotaka Masuda, Hiroshi Uchida, Mamoru Tanaka
AIM: Because subclinical hypothyroidism (thyroid-stimulating hormone [TSH] > 4.5 IU/mL) is associated with adverse pregnancy outcome, including early pregnancy loss, TSH is recommended to be titrated to ≤2.5 mIU/L in levothyroxine-treated women before pregnancy. The purpose of this study was to determine whether borderline-subclinical hypothyroidism (borderline-SCH; 2.5 < TSH ≤ 4.5 IU/mL) affects the outcome of subsequent pregnancies in women with unexplained recurrent pregnancy loss (uRPL)...
June 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28605561/comment-on-decreased-platelet-size-is-associated-with-platelet-activation-and-anti-phospholipid-syndrome-in-systemic-lupus-erythematosus
#20
Yanxia Chen, Jinlin Liu
No abstract text is available yet for this article.
August 1, 2017: Rheumatology
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