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https://www.readbyqxmd.com/read/28216071/antiphospholipid-antibodies-disappearance-in-primary-antiphospholipid-syndrome-thrombosis-recurrence
#1
REVIEW
Gabriela Medina, Eduardo Briones-García, María Pilar Cruz-Domínguez, Oscar I Flórez-Durante, Luis J Jara
OBJECTIVE: To evaluate the clinical outcome after aPL (antiphospholipid antibodies) disappearance in primary APS patients. METHODS: From a cohort of 70 patients with primary APS, we selected patients with positive aPL determinations at onset and ≥2 subsequent negative aPL determinations during the last 5years. To corroborate the immunologic profile, we determined IgG/IgM aCL antibodies, IgG/IgM antiβ2GPl, anti-annexin A5 antibodies and lupus anticoagulant (LA)...
February 13, 2017: Autoimmunity Reviews
https://www.readbyqxmd.com/read/28215033/anti-mutated-citrullinated-vimentin-antibodies-in-antiphospholipid-syndrome-diagnostic-value-and-relationship-with-clinical-features
#2
Cristiano Alessandri, Nancy Agmon-Levin, Fabrizio Conti, Carlo Perricone, Elena Ortona, Monica Pendolino, Antonella Capozzi, Federica Delunardo, Riccardo Mancini, Simona Truglia, Francesca Romana Spinelli, Fulvia Ceccarelli, Maurizio Sorice, Yehuda Shoenfeld, Guido Valesini
: Antiphospholipid antibodies (aPLs) are a heterogeneous group of autoantibodies essential for the diagnosis of antiphospholipid syndrome (APS) but do not predict clinical manifestations or disease progression. Hence, the co-presence of other antibodies may prove useful. Autoimmunity directed toward vimentin and other citrullinated peptides was established in rheumatoid arthritis (RA) and in other autoimmune conditions including systemic lupus erythematosus (SLE). We have previously described the presence of autoantibodies directed against vimentin/cardiolipin complex in patients with antiphospholipid syndrome (APS), but there are no data on the role of citrullinated vimentin in APS...
February 18, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28209340/ultrasound-guided-injection-for-de-quervain-s-disease-accuracy-and-its-influenceable-anatomical-variances-in-first-extensor-compartment-of-fresh-cadaver-wrists
#3
Jong Woo Kang, Jong Woong Park, Soon Hyuck Lee, Jong Hoon Park, Seung Bum Han, Si Young Park, Woong Kyo Jeong
BACKGROUND: This study was designed to evaluate the accuracy of ultrasound-guided injection targeting EPB tendon sheath and influenceable anatomical variances to the accuracy in the first extensor compartment of fresh cadaver wrists. METHODS: Thirty wrists of 15 cadavers were used. The wrists were divided into right-sided wrists (control group) and left-sided wrists (group A) to compare the accuracy of the manual injection technique (control group) and ultrasound-guided injection technique (group A) targeting EPB tendon sheath...
February 10, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28197821/evaluation-of-glymphatic-system-activity-with-the-diffusion-mr-technique-diffusion-tensor-image-analysis-along-the-perivascular-space-dti-alps-in-alzheimer-s-disease-cases
#4
Toshiaki Taoka, Yoshitaka Masutani, Hisashi Kawai, Toshiki Nakane, Kiwamu Matsuoka, Fumihiko Yasuno, Toshifumi Kishimoto, Shinji Naganawa
PURPOSE: The activity of the glymphatic system is impaired in animal models of Alzheimer's disease (AD). We evaluated the activity of the human glymphatic system in cases of AD with a diffusion-based technique called diffusion tensor image analysis along the perivascular space (DTI-ALPS). MATERIALS AND METHODS: Diffusion tensor images were acquired to calculate diffusivities in the x, y, and z axes of the plane of the lateral ventricle body in 31 patients. We evaluated the diffusivity along the perivascular spaces as well as projection fibers and association fibers separately, to acquire an index for diffusivity along the perivascular space (ALPS-index) and correlated them with the mini mental state examinations (MMSE) score...
February 14, 2017: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/28193831/%C3%AE-2-glycoprotein-i-recognition-drives-th1-inflammation-in-atherosclerotic-plaques-of-patients-with-primary-antiphospholipid-syndrome
#5
Marisa Benagiano, Maria Gerosa, Jacopo Romagnoli, Michael Mahler, Maria O Borghi, Alessia Grassi, Chiara Della Bella, Giacomo Emmi, Amedeo Amedei, Elena Silvestri, Lorenzo Emmi, Domenico Prisco, Pier Luigi Meroni, Mario M D'Elios
Antiphospholipid syndrome (APS) is characterized by recurrent arterial/venous thrombosis and miscarriages in the persistent presence of autoantibodies against phospholipid-binding proteins (aPLs), such as β2 glycoprotein I (β2GPI). In addition to the aPL thrombophilic effect, arterial thrombosis was related to accelerated atherosclerosis in animal models; however, contrasting findings were reported in primary APS patients with regard to the increased number of plaques or abnormal arterial wall thickness. We investigated the cytokine production induced by β2GPI in activated T cells that infiltrate in vivo atherosclerotic lesions of primary APS patients with atherothrombosis...
February 13, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28192098/anti-leukemic-effects-of-hdaci-belinostat-and-hmti-3-deazaneplanocin-a-on-human-acute-promyelocytic-leukemia-cells
#6
Giedrė Valiulienė, Ieva Stirblytė, Monika Jasnauskaitė, Veronika Borutinskaitė, Rūta Navakauskienė
Development of acute myeloid leukemia is usually sustained by deregulated epigenome. Alterations in DNA methylation and histone modifications are common manifestations of the disease. Acute promyelocytic leukemia (APL) is not an exception. Therefore, drugs that target epigenetic processes suggest an appealing strategy for APL treatment. In this study we tested the anti-leukemic activity of histone deacetylase inhibitor (HDACi) Belinostat (PXD101, (2E)-N-Hydroxy-3-[3-(phenylsulfamoyl)phenyl]prop-2-enamide), and histone methyltransferase inhibitor (HMTi) 3-Deazaneplanocin A (DZNep, 5R-(4-amino-1H-imidazo[4,5-c]pyridin-1-yl)-3-(hydroxymethyl)-3-cyclopentene-1S,2R-diol) combined with retinoic acid (RA) in APL cells NB4 and HL-60...
February 10, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28185029/antiphospholipid-antibodies-proposed-in-the-diagnosis-of-infective-endocarditis
#7
C Zaratzian, F Gouriet, H Tissot-Dupont, J-P Casalta, M Million, N Bardin, D Grisoli, G Habib, D Raoult
Antiphospholipid antibodies (aPL) may occur alone or associated with other diseases. To evaluate aPL, tested as anticardiolipin antibodies (IgG aCL) in infective endocarditis (IE) diagnosis, we investigated their prevalence in a cohort of 651 patients with IE suspicion. aPL was significantly associated with definite IE versus IE-rejected patients. Their mean levels were significantly higher in patients with definite IE versus possible IE. When applied as Duke minor criterion, they were significantly more often positive, and at higher levels, in patients with definite IE than in patients with possible or rejected IE...
February 9, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28181217/hypercoagulability-and-migraine
#8
Gretchen E Tietjen, Stuart A Collins
BACKGROUND: A growing body of literature suggests that migraineurs, particularly those with aura, have an increased risk for ischemic stroke, but not via enhanced atherosclerosis. The theory that micro-emboli induced ischemia provokes cortical spreading depression (ie, symptomatic aura) in migraineurs but transient ischemic attacks in others highlights a potential role for hypercoagulability as a link between migraine (with aura) and stroke. AIM: Our objective is to summarize the literature evaluating the association of migraine with various acquired or inheritable thrombophilic states, including those related to elevated estrogen levels, endothelial activation and dysfunction, antiphospholipid antibodies (aPL), deficiency of coagulation inhibitors, and presence of certain genetic polymorphisms...
February 9, 2017: Headache
https://www.readbyqxmd.com/read/28179558/cell-specific-pkm-isoforms-contribute-to-the-maintenance-of-different-forms-of-persistent-long-term-synaptic-plasticity
#9
Jiangyuan Hu, Kerry Adler, Carole Abi Farah, Margaret H Hastings, Wayne S Sossin, Samuel Schacher
Multiple kinase activations contribute to long-term synaptic plasticity, a cellular mechanism mediating long-term memory. The sensorimotor synapse of Aplysia expresses different forms of long-term facilitation (LTF) - non-associative and associative LTF - that require the timely activation of kinases, including PKC. It is not known which PKC isoforms in the sensory neuron or motor neuron L7 are required to sustain each form of LTF. We show that different PKMs, the constitutively active isoforms of PKCs generated by calpain cleavage, in the sensory neuron and L7 are required to maintain each form of LTF...
February 8, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28176226/evaluation-of-the-safety-and-efficacy-of-recombinant-soluble-thrombomodulin-for-patients-with-disseminated-intravascular-coagulation-associated-with-acute-leukemia-multicenter-prospective-study-by-the-tohoku-hematology-forum
#10
Hisayuki Yokoyama, Naoto Takahashi, Yuna Katsuoka, Mitsue Inomata, Toshihiro Ito, Kuniaki Meguro, Yoshihiro Kameoka, Riko Tsumanuma, Kazunori Murai, Hideyoshi Noji, Kenichi Ishizawa, Shigeki Ito, Yasushi Onishi, Hideo Harigae
It has been suggested that use of recombinant soluble thrombomodulin (rTM) is superior to conventional drugs in treatment of disseminated intravascular coagulation (DIC) complicating acute leukemia. However, its safety and efficacy have not been fully examined in prospective studies. Here, we performed a multicenter prospective study to examine outcomes of rTM treatment for DIC in patients with acute leukemia. Of 33 patients registered in this study, 13 had acute myeloid leukemia (AML), three had acute lymphoblastic leukemia (ALL), and 17 had acute promyelocytic leukemia (APL)...
February 7, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28166601/mechanisms-of-cellular-activation-in-the-antiphospholipid-syndrome
#11
Nadine Müller-Calleja, Karl J Lackner
It is long known that antiphospholipid antibodies (aPL) induce proinflammatory and procoagulant cellular responses. The underlying signal transduction has been a major focus of research and is the topic of this review. An amazingly heterogeneous panel of signaling pathways has been described and it turns out that at least some of this heterogeneity can be explained by effects of distinct aPL species. On the one hand, there are antibodies against β2-glycoprotein I (β2GPI) which appear to exert their cellular effects only as a complex of β2GPI/anti-β2GPI...
February 6, 2017: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/28164648/validation-of-a-new-panel-of-automated-chemiluminescence-assays-for-anticardiolipin-antibodies-in-the-screening-for-antiphospholipid-syndrome
#12
D Janek, L Slavik, J Ulehlova, V Krcova, A Hlusi, J Prochazkova
BACKGROUND: Antibodies anticardiolipin (aCL) and anti-β2-glycoprotein I (aβ2GPI) are two of three laboratory criteria of antiphospholipid syndrome (APS). All of assays of antiphospholipid antibodies (aPL), coagulation assays as well as ELISAs, show methodological shortcomings, that affect their sensitivity and specificity. Therefore, we decided to validate these parameters for a new chemiluminescent examination (CLIA). METHODS: aCL and aβ2GPI antibodies were measured by ELISAs (AIDA, Bad Kreuznach, Germany) and aβ2GPI with CLIA kits (Werfen, Barcelona, Spain)...
July 1, 2016: Clinical Laboratory
https://www.readbyqxmd.com/read/28164388/exclusion-of-assembled-mreb-by-anionic-phospholipids-at-cell-poles-confers-cell-polarity-for-bidirectional-growth
#13
Takuma Kawazura, Kanon Matsumoto, Koki Kojima, Fumiya Kato, Tomomi Kanai, Hironori Niki, Daisuke Shiomi
Cell polarity determines the direction of cell growth in bacteria. MreB actin spatially regulates peptidoglycan synthesis to enable cells to elongate bidirectionally. MreB densely localizes in the cylindrical part of the rod cell and not in polar regions in Escherichia coli. When treated with A22, which inhibits MreB polymerization, rod-shaped cells became round and MreB was diffusely distributed throughout the cytoplasmic membrane. A22 removal resulted in restoration of the rod shape. Initially, diffuse MreB started to re-assemble, and MreB-free zones were subsequently observed in the cytoplasmic membrane...
February 6, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/28153433/thrombocytopenia-as-a-thrombotic-risk-factor-in-patients-with-antiphospholipid-antibodies-without-disease-criteria
#14
Rosalia Demetrio Pablo, Pedro Muñoz, Marcos López-Hoyos, Vanesa Calvo, Leyre Riancho, Victor Manuel Martínez-Taboada
INTRODUCTION: The antiphospholipid syndrome (APS) is an acquired immune disorder defined by the presence of thrombosis (arterial and/or venous) and/or pregnancy morbidity along with the presence of positive antiphospholipid antibodies (aPL). There is a clear relationship between aPL and some events not included in the clinical criteria, including haematologic. OBJECTIVES: a) to study the probability of developing clinical APS in patients with positive aPL and thrombopenia; b) to identify potential risk factors for thrombosis, and c) to study the association between thrombocytopenia and aPL...
January 30, 2017: Medicina Clínica
https://www.readbyqxmd.com/read/28151504/-cardiac-abnormalities-in-patients-with-systemic-lupus-erythematosus-the-role-of-antiphospholipid-antibodies
#15
Manuel Monti, Francesco Borgognoni, Loredana Pastacci, Giovanni Maria Vincentelli
BACKGROUND: Systemic lupus erythematosus (SLE) is a chronic inflammatory disease that has protean manifestations and follows a relapsing and remitting course. More than 90% of cases of SLE occur in women, frequently starting at childbearing age. It is characterized by the presence of autoantibodies potentially directed toward every organ or apparatus. Cardiac alterations are frequent in patients affected by SLE and the simultaneous presence of antiphospholipid antibodies (aPL), able to cause arterial thrombosis in any vascular district, is considered a possible risk factor for cardiac damage in SLE patients...
December 2016: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/28132398/modulation-of-antiphospholipid-antibodies-induced-trophoblast-damage-by-different-drugs-used-to-prevent-pregnancy-morbidity-associated-with-antiphospholipid-syndrome
#16
Angela M Alvarez, Norman Balcázar, Sebastián San Martín, Udo R Markert, Angela P Cadavid
PROBLEM: Women with antiphospholipid antibodies (aPLs) present a risk of pregnancy morbidity (PM), vascular thrombosis (VT), or both (PM/VT). aPLs affect trophoblast function, and the aim of this study was to determine the modulation of this aPL-induced damage by different drugs. METHOD OF STUDY: IgG was obtained from women with PM and PM/VT positive to aPLs. Binding of IgG to trophoblastic cells, proliferation, mitochondrial membrane integrity, and trophoblast invasion were assessed...
January 29, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28130038/autophagy-contributes-to-4-amino-2-trifluoromethyl-phenyl-retinate-induced-differentiation-in-human-acute-promyelocytic-leukemia-nb4-cells
#17
Yue Li, Ge Li, Ke Wang, Ya-Ya Xie, Ren-Peng Zhou, Yao Meng, Ran Ding, Jin-Fang Ge, Fei-Hu Chen
As a classic differentiation agent, all-trans retinoic acid (ATRA) has been widely used in treatment of acute promyelocytic leukemia (APL). However, clinical application of ATRA has limitations. Our previous studies suggested that 4-Amino-2-Trifluoromethyl-Phenyl Retinate (ATPR), a novel all-trans retinoic acid (ATRA) derivative designed and synthesized by our team, could induce differentiation of APL cells in vivo and in vitro. To explore the underlying mechanism of ATPR, the effect of ATPR on autophagy of APL cells was observed in the present study...
January 25, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28129662/new-insights-in-the-pathophysiology-of-antiphospholipid-syndrome
#18
Anastasia Sacharidou, Philip W Shaul, Chieko Mineo
The antiphospholipid syndrome (APS) is an autoimmune disorder characterized by an elevated risk for arterial and venous thrombosis and pregnancy-related morbidity. Since the discovery of the disease in 1980s, numerous studies in cell culture systems, in animal models, and in patient populations have been reported, leading to a deeper understanding of the pathogenesis of APS. These studies have determined that circulating autoantibodies, collectively called antiphospholipid antibodies (aPL), the majority of which recognize cell surface proteins attached to the plasma membrane phospholipids, play a causal role in the development of the disease...
January 27, 2017: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/28129653/rxr%C3%AE-ligand-z-10-induces-pml-rar%C3%AE-cleavage-and-apl-cell-apoptosis-through-disrupting-pml-rar%C3%AE-rxr%C3%AE-complex-in-a-camp-independent-manner
#19
Lin Xu, Zhiping Zeng, Weidong Zhang, Gaoang Ren, Xiaobin Ling, Fengyu Huang, Peizhen Xie, Ying Su, Xiao-Kun Zhang, Hu Zhou
The major oncogenic driver of acute promyelocytic leukemia (APL) is the fusion protein PML-RARα originated from the chromosomal translocation t(15;17). All-trans retinoic acid (ATRA) and arsenic trioxide cure most patients by directly targeting PML-RARα. However, major issues including the resistance of ATRA and arsenic therapy still remain in APL clinical management. Here we showed that compound Z-10, a nitro-ligand of retinoid X receptor α (RXRα), strongly promoted the cAMP-independent apoptosis of both ATRA- sensitive and resistant NB4 cells via the induction of caspase-mediated PML-RARα degradation...
January 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28125133/acute-wt1-positive-promyelocytic-leukemia-with-hypogranular-variant-morphology-bcr-3-isoform-of-pml-rar%C3%AE-and-flt3-itd-mutation-a-rare-case-report
#20
Xi Zhang, Cheng Yang, Xiangui Peng, Xinghua Chen, Yimei Feng
CONTEXT: Acute promyelocytic leukemia (APL) accounts for 8% to 10% of cases of acute myeloid leukemia (AML). Remission in cases of high-risk APL is still difficult to achieve, and relapses occur readily. CASE REPORT: Here, we describe a case of APL with high white blood cell counts in blood tests and hypogranular variant morphology in bone marrow, together with fms-like tyrosine kinase-3 with internal tandem duplication mutations (FLT3-ITD), and bcr-3 isoform of PML-RARα...
January 23, 2017: São Paulo Medical Journal, Revista Paulista de Medicina
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