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Immune thrombocytopenia

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https://www.readbyqxmd.com/read/28239462/thrombocytopenia-in-patients-with-melanoma-receiving-immune-checkpoint-inhibitor-therapy
#1
Eileen Shiuan, Kathryn E Beckermann, Alpaslan Ozgun, Ciara Kelly, Meredith McKean, Jennifer McQuade, Mary Ann Thompson, Igor Puzanov, John P Greer, Suthee Rapisuwon, Michael Postow, Michael A Davies, Zeynep Eroglu, Douglas Johnson
BACKGROUND: Immune checkpoint inhibitors, including antibodies against programmed death 1 (PD-1) and cytotoxic T-lymphocyte antigen 4 (CTLA-4), are being used with increasing frequency for the treatment of cancer. Immune-related adverse events (irAEs) including colitis, dermatitis, and pneumonitis are well described, but less frequent events are now emerging with larger numbers of patients treated. Herein we describe the incidence and spectrum of thrombocytopenia following immune checkpoint inhibitor therapy and two severe cases of idiopathic thrombocytopenic purpura (ITP)...
2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28225866/circulating-myeloid-derived-suppressor-cells-predict-disease-activity-and-treatment-response-in-patients-with-immune-thrombocytopenia
#2
J Zhou, Y Zhou, J Wen, X Sun, X Zhang
Immune thrombocytopenia (ITP) is a disease characterized by isolated thrombocytopenia. Abnormal effector T cell activation is an important mechanism in the pathogenesis of ITP. Regulatory T cells (Treg) have a strong immunosuppressive function for T cell activation and their importance in the pathophysiology and clinical treatment of ITP has been confirmed. Myeloid-derived suppressor cells (MDSCs) are other immunosuppressive cells, which can also suppress T cell activation by secreting arginase, iNOS and ROS, and are essential for Treg cells' differentiation and maturation...
February 16, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28219222/-relative-analysis-of-platelet-activation-with-bleeding-risk-in-patients-with-primary-immune-thrombocytopenia
#3
M E Lyu, Y Li, C C Lyu, W J Liu, Y Guan, S X Wang, R C Yang
Objective: To study the relationship between platelet activation and the degree of bleeding in patients with primary immune thrombocytopenia (ITP) . Methods: 43 patients with ITP were assessed based on ITP-BAT bleeding grading system. Platelet membrane glycoproteins (GP) Ⅰb, GPⅡb/Ⅲa and P-selectin expression were detected by flow cytometry analysis with and without adenosine diphosphate (ADP) stimulation. Association of platelet activation with platelet count, immature platelet fraction (IPF) , bleeding severity were evaluated...
January 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28217703/babesiosis-associated-immune-thrombocytopenia
#4
Roshni Narurkar, Aleksandra Mamorska-Dyga, Anup Agarwal, John C Nelson, Delong Liu
Thrombocytopenia is a common feature of babesiosis. The mechanism for thrombocytopenia in babesiosis remains elusive. We report a case of babesiosis with severe new onset immune thrombocytopenia (ITP). In addition to antibiotics treatment for babesiosis, ITP therapy was administered. ITP in the present case was most likely triggered by the babesia infection. The severity of ITP in this case was not proportional to the severity of parasitemia. The neoantigen triggering the autoimmune response in babesiosis requires further characterization...
2017: Stem Cell Investigation
https://www.readbyqxmd.com/read/28216187/recombinant-proteins-of-zaire-ebolavirus-induce-potent-humoral-and-cellular-immune-responses-and-protect-against-live-virus-infection-in-mice
#5
Axel T Lehrer, Teri-Ann S Wong, Michael M Lieberman, Tom Humphreys, David E Clements, Russell R Bakken, Mary Kate Hart, William D Pratt, John M Dye
Infections with filoviruses in humans are highly virulent, causing hemorrhagic fevers which result in up to 90% mortality. In addition to natural infections, the ability to use these viruses as bioterrorist weapons is of significant concern. Currently, there are no licensed vaccines or therapeutics available to combat these infections. The pathogenesis of disease involves the dysregulation of the host's immune system, which results in impairment of the innate and adaptive immune responses, with subsequent development of lymphopenia, thrombocytopenia, hemorrhage, and death...
February 16, 2017: Vaccine
https://www.readbyqxmd.com/read/28208873/high-dose-intravenous-anti-d-immune-globulin-is-more-effective-and-safe-in-indian-paediatric-patients-of-immune-thrombocytopenic-purpura
#6
Trupti Rekha Swain, Rabindra Kumar Jena, Kali Prasanna Swain
INTRODUCTION: Immune Thrombocytopenia (ITP) is characterised by an autoimmune antibody-mediated destruction of platelets and impaired platelet production. Few controlled trials exist to guide management of patients with ITP in Indian scenario for which patients require an individualized approach. Anti-D (Rho (D) immune globulin) at a higher dose can prove to be a cost effective and safe alternative for Indian patients with ITP. AIM: To compare the safety and efficacy of higher dose (75μg/kg) intravenous Anti-D immune globulin against the standard dose of 50μg/kg for the management of ITP in Indian patients...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208757/pathogenesis%C3%A2-and%C3%A2-therapeutic%C3%A2-mechanisms%C3%A2-in%C3%A2-immune%C3%A2-thrombocytopenia%C3%A2-itp
#7
REVIEW
Anne Zufferey, Rick Kapur, John W Semple
Immune thrombocytopenia (ITP) is a complex autoimmune disease characterized by low  platelet counts. The pathogenesis of ITP remains unclear although both antibody-mediated and/or  T cell-mediated platelet destruction are key processes. In addition, impairment of T cells, cytokine  imbalances, and the contribution of the bone marrow niche have now been recognized to be  important. Treatment strategies are aimed at the restoration of platelet counts compatible with  adequate hemostasis rather than achieving physiological platelet counts...
February 9, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/28203488/efficacy-and-safety-of-clairyg-%C3%A2-a-ready-to-use-intravenous-immunoglobulin-in-adult-patients-with-primary-immune-thrombocytopenia
#8
Borhane Slama, Olivier Fain, Hervé Maisonneuve, Eric Jourdan, Jean-François Viallard, Rabye Ouaja, Ousmane Alfa-Cissé, Bertrand Godeau
PURPOSE: The present study was designed to assess the efficacy and safety of IGNG that is a new liquid, saccharose and maltose-free highly purified ready-to-use 5% intravenous immunoglobulin (IVIg), in primary immune thrombocytopenic patients with severe thrombocytopenia. METHODS: Nineteen adults with a platelet count ≤ 25 × 10(9)/L received a single dose of IGNG (1 g/kg) on Day 1, with a second identical dose on Day 3 if needed. Patients were followed for 30 days...
2017: American Journal of Blood Research
https://www.readbyqxmd.com/read/28203325/inherited-thrombocytopenia-with-a-different-type-of-gene-mutation-a-brief-literature-review-and-two-case-studies
#9
Mohammad Taghi Arzanian
Hereditary thrombocytopenias are rare bleeding disorders, which cause a deficiency of platelets in early infancy. This group of disorders is sometimes associated with abnormal phenotypes, like absence of radius. Diagnosis of this type of thrombocytopenia is usually difficult; other causes of thrombocytopenia, such as immune disorders and infections, must be ruled out. The symptoms of hereditary thrombocytopenia also vary from seldom and mild to severe bleeding and occasionally may first occur in late childhood...
October 2016: Iranian Journal of Pediatrics
https://www.readbyqxmd.com/read/28197963/a-concise-review-of-autoimmune-cytopenias-in-chronic-lymphocytic-leukemia
#10
REVIEW
Mazie Tsang, Sameer A Parikh
Chronic lymphocytic leukemia (CLL) is frequently associated with autoimmune complications such as autoimmune hemolytic anemia, immune thrombocytopenia, pure red cell aplasia, and autoimmune granulocytopenia. It is critical to diagnose cytopenias from these secondary complications of CLL accurately, since prognosis and therapy are substantially different from patients who have cytopenias due to extensive bone marrow infiltration by CLL. The pathogenesis of autoimmune cytopenias in CLL is complex; and it involves antigen presentation by CLL cells to polyclonal B cells resulting in production of autoantibody, and alteration of the T cell milieu tilting the balance in favor of an autoimmune response...
February 14, 2017: Current Hematologic Malignancy Reports
https://www.readbyqxmd.com/read/28194178/role-of-helicobacter-pylori-eradication-therapy-on-platelet-recovery-in-chronic-immune-thrombocytopenic-purpura
#11
Khan Sheema, Ujjan Ikramdin, Naz Arshi, Naz Farah, Sheikh Imran
Background. Idiopathic thrombocytopenic purpura (ITP) is a bleeding disorder in which the immune system destroys native platelets. In this condition an autoantibody is generated against a platelet antigen. ITP affects women more often than men and is more common in children than adults. Objective. To assess the effect of Helicobacter pylori eradication therapy (HPET) on platelet count in Helicobacter pylori associated chronic immune thrombocytopenic purpura (chronic ITP) in adult. Materials and Methods. It is an interventional prospective study conducted at Liaquat University of Medical and Health Sciences, Jamshoro, from 2014 to 2015...
2017: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/28194063/initial-lymphocyte-count-as-prognostic-indicator-for-childhood-immune-thrombocytopenia
#12
Sinan Akbayram, Kamuran Karaman, Murat Dogan, Lokman Ustyol, Mesut Garipardic, Ahmet Faik Oner
Acute ITP is a benign, self-limiting disease. Chronic ITP is diagnosed when thrombocytopenia persists beyond 12 months. The main objective of the present study was to examine whether absolute lymphocyte counts at diagnosis has predictive value with chronic ITP. A total of 601 patients diagnosed as ITP between 1995 and 2014 were retrospectively evaluated. CBCs with differential counts were performed at presentation for 601 patients. Absolute lymphocyte counts at presentation were independently predictive of disease duration...
March 2017: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/28190600/cost-of-bleeding-related-episodes-in-adult-patients-with-primary-immune-thrombocytopenia-a-population-based-retrospective-cohort-study-of-administrative-claims-data-for-commercial-payers-in-the-united-states
#13
Junji Lin, Xinke Zhang, Xiaoyan Li, David Chandler, Ivy Altomare, Jeffrey S Wasser, Karynsa Cetin
PURPOSE: We estimated the real-world costs of bleeding-related episodes (BREs) in adults with primary immune thrombocytopenia (ITP). METHODS: This retrospective cohort study used the MarketScan Commercial Claims and Encounters and Medicare Supplemental and Coordination of Benefits databases. We identified adult patients diagnosed with primary ITP between 2007 and 2012, defined by at least 2 outpatient claims separated by ≥30 days or 1 inpatient claim (International Classification of Diseases, Ninth Revision, Clinical Modification diagnosis code for primary ITP [287...
February 9, 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/28190444/management-of-neuro-oncologic-emergencies
#14
J T Jo, D Schiff
Patients with brain tumors and systemic malignancies are subject to diverse neurologic complications that require urgent evaluation and treatment. These neurologic conditions are commonly due to the tumor's direct effects on the nervous system, such as cerebral edema, increased intracranial pressure, seizures, spinal cord compression, and leptomeningeal metastases. In addition, neurologic complications can develop as a result of thrombocytopenia, coagulopathy, hyperviscosity syndromes, infection, immune-related disorders, and adverse effects of treatment...
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/28188841/bayesian-clinical-trial-design-using-markov-models-with-applications-to-autoimmune-disease
#15
Barry S Eggleston, Joseph G Ibrahim, Diane Catellier
Immune Thrombocytopenia is an autoimmune disease associated with bleeding that is treated by increasing the platelet count to a level where the chance of uncontrollable bleeding is low. Failure occurs when platelet counts are not raised sufficiently (initial failure), or when high platelet counts are not maintained after initial success (relapse). In this paper, we propose a Bayesian clinical trial design that uses a Markov multistate model along with a power prior for the parameters which incorporates historical control data to estimate transition rates among two randomized groups as defined by the model...
February 7, 2017: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/28174643/romiplostim-therapy-as-a-second-line-treatment-before-splenectomy-for-refractory-immune-thrombocytopenia-in-a-cirrhotic-patient-with-iatrogenic-cushing-syndrome-secondary-to-corticosteroids
#16
Teresa Casanovas Taltavull, Maria Carmen Peña-Cala
Our case report discusses the usefulness of administering romiplostim as a second-line treatment before splenectomy in a cirrhotic patient with immune thrombocytopenia who developed corticosteroid-induced Cushing's syndrome. Corticosteroids were tapered and consequently withdrawn. The patient made a full recovery postsplenectomy.
February 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/28173977/identification-of-a-candidate-standard-strain-of-severe-fever-with-thrombocytopenia-syndrome-virus-for-vaccine-quality-control-in-china-using-a-cross-neutralization-assay
#17
Zheng Jia, Xiaohong Wu, Ling Wang, Xiuling Li, Xinxian Dai, Mifang Liang, Shouchun Cao, Yan Kong, Jingjing Liu, Yuhua Li, Junzhi Wang
Severe fever with thrombocytopenia syndrome (SFTS) is caused by a phlebovirus of the Bunyaviridae family, which is designated as SFTS virus (SFTSV). To our knowledge, no efficient SFTSV vaccine exists. Here, we report the identification of a standard virus strain for the eight major SFTSV strains circulating in China for use in evaluating the SFTSV vaccine. Rabbits were immunized with the SFTSV strains and the cross-neutralization capacities of SFTSV anti-sera were determined in microculture cytopathic effect (CPE)-inhibition assays...
February 4, 2017: Biologicals: Journal of the International Association of Biological Standardization
https://www.readbyqxmd.com/read/28160307/treatment-of-presumptive-primary-immune-mediated-thrombocytopenia-with-mycophenolate-mofetil-versus-cyclosporine-in-dogs
#18
F O Cummings, S A Rizzo
OBJECTIVES: The objective of this study was to compare hospitalisation duration, survival times, adverse events and cost of therapy in dogs with presumptive primary immune-mediated thrombocytopenia undergoing therapy with mycophenolate mofetil and corticosteroids versus cyclosporine and corticosteroids. METHODS: A retrospective study of medical case records of dogs with presumed primary immune-mediated thrombocytopenia was conducted. Data collected included signalment, presenting complaints, haematologic and biochemical profiles, vector-borne disease testing, thoracic and abdominal radiographs, abdominal ultrasound, medications administered, duration of hospitalisation, 30- and 60-day survival, adverse events and cost of therapy...
February 2017: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/28157396/notch-signaling-modulates-the-balance-of-regulatory-t-cells-and-t-helper-17-cells-in-patients-with-chronic-hepatitis-c
#19
Lei Qin, Yan-Cai Zhou, Hong-Jie Wu, Ya Zhuo, Yan-Ping Wang, Chang-Yun Si, Yong-Mei Qin
The imbalance of regulatory T cells (Tregs) and T helper 17 (Th17) cells contributes to the persistent hepatitis C virus (HCV) infection. However, modulatory factors associated with Tregs-Th17 balance were not fully elucidated. A recent study demonstrated an immunoregulatory strategy by inactivation of Notch signaling to reverse the disequilibrium of Tregs-Th17 cells in immune thrombocytopenia. Thus, the aim of this study was to assess the effect of Notch signaling in regulating the functions of Tregs and Th17 cells in chronic hepatitis C...
February 3, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28154580/systemic-inflammatory-response-and-severe-thrombocytopenia-after-endovascular-thoracic-aortic-aneurysm-repair
#20
Valentina Silvestrin, Stefano Bonvini, Michele Antonello, Franco Grego, Roberto Vettor, Marco Rossato
After Endovascular repair of thoracic aortic aneurysm, a systemic inflammatory response, named postimplantation syndrome, can develop. This syndrome is characterized by fever, leukocytosis, and elevated CRP plasma levels and its pathogenetic mechanisms are still unknown. Although this syndrome generally resolves within few days, some patients develop a persisting severe inflammatory reaction leading to mild or severe complications. Here we describe the case of a male patient who developed postimplantation inflammatory syndrome and severe thrombocytopenia after endovascular repair of thoracic aortic aneurysm...
2017: Case Reports in Medicine
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