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https://www.readbyqxmd.com/read/28104688/mice-with-a-deficiency-in-clec-2-are-protected-against-deep-vein-thrombosis
#1
Holly Payne, Tatyana Ponomaryov, Steve P Watson, Alexander Brill
Deep vein thrombosis (DVT) with its major complication, pulmonary embolism, is a global health problem. Mechanisms of DVT remain incompletely understood. Platelets play a role in DVT but the impact of specific platelet receptors remains unclear. Platelet C-type lectin-like receptor 2 (CLEC-2) is known to maintain the physiological state of blood vasculature under inflammatory conditions. DVT is a thromboinflammatory disorder developing largely as sterile inflammation in the vessel wall. We hypothesized therefore that CLEC-2 might play a role in DVT...
January 19, 2017: Blood
https://www.readbyqxmd.com/read/28102737/platelet-microvesicles-in-health-and-disease
#2
Imene Melki, Nicolas Tessandier, Anne Zufferey, Eric Boilard
Interest in cell-derived extracellular vesicles and their physiological and pathological implications is constantly growing. Microvesicles, also known as microparticles, are small extracellular vesicles released by cells in response to activation or apoptosis. Among the different microvesicles present in the blood of healthy individuals, platelet-derived microvesicles (PMVs) are the most abundant. Their characterization has revealed a heterogeneous cargo that includes a set of adhesion molecules. Similarly to platelets, PMVs are also involved in thrombosis through support of the coagulation cascade...
January 19, 2017: Platelets
https://www.readbyqxmd.com/read/28096094/platelet-cd34-expression-and-%C3%AE-%C3%AE-granule-abnormalities-in-gfi1b-and-runx1-related-familial-bleeding-disorders
#3
Anna E Marneth, Waander L van Heerde, Konnie M Hebeda, Britta A P Laros-van Gorkom, Wideke Barteling, Brigith Willemsen, Aniek O de Graaf, Annet Simons, Joop H Jansen, Frank Preijers, Marjolijn C Jongmans, Bert A van der Reijden
No abstract text is available yet for this article.
January 17, 2017: Blood
https://www.readbyqxmd.com/read/28095213/editorial-platelet-genomics-and-disorders-of-platelet-number-and-function
#4
A Koneti Rao
No abstract text is available yet for this article.
January 2017: Platelets
https://www.readbyqxmd.com/read/28093506/the-tyrosine-kinase-receptor-tyro3-enhances-lifespan-and-neuropeptide-y-npy-neuron-survival-in-the-mouse-anorexia-anx-mutation
#5
Dennis Y Kim, Joanna Yu, Ryan K Mui, Rieko Niibori, Hamza Bin Taufique, Rukhsana Aslam, John W Semple, Sabine P Cordes
Severe appetite and weight loss define the eating disorder anorexia nervosa, and can also accompany the progression of some neurodegenerative disorders, such as amyotrophic lateral scelerosis (ALS). While acute loss of hypothalamic neurons that produce appetite-stimulating neuropeptide Y (Npy) and agouti related peptide (AgRP) in adult mice or in mice homozygous for the anorexia (anx) mutation causes aphagia, our understanding of the factors that help maintain appetite regulatory circuitry is limited. Here we identify a mutation that converts an arginine to a tryptophan (R7W) in the Tyrosine receptor kinase 3 (Tyro3) gene, which resides within the anx critical interval, as contributing to the severity of anx phenotypes...
January 12, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28093371/sonographically-guided-knee-meniscus-injections-feasibility-techniques-and-validation
#6
Michael R Baria, Jacob L Sellon, Dan Lueders, Jay Smith
BACKGROUND: There is a growing interest in the use of biologic agents such as platelet-rich plasma and mesenchymal stem/stromal cells to treat musculoskeletal injuries, including meniscal tears. Although prior research has documented the role of diagnostic ultrasound to evaluate meniscal tears, sonographically guided (SG) techniques to specifically deliver therapeutic agents into the meniscus have not been described. OBJECTIVE: To describe and validate SG injection techniques for the body and posterior horn of the medial and lateral meniscus...
January 13, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28091794/the-impact-of-liver-disorders-on-perioperative-management-of-reoperative-cardiac-surgery-a-retrospective-study-in-adult-congenital-heart-disease-patients
#7
Koko Adachi, Hiroaki Toyama, Yu Kaiho, Osamu Adachi, Hiroto Hudeta, Masanori Yamauchi
PURPOSE: We evaluated the preoperative prevalence of risk factors for liver disorders and the relationship between the liver disorders and perioperative outcomes in adult congenital heart disease (ACHD) patients. METHODS: This retrospective study included 32 ACHD patients who underwent reoperative cardiac surgery. RESULTS: Preoperatively, 38% of the study patients had risk factors, including congestive liver (CL) due to right heart failure (31%), chronic hepatitis C (HC) (22%), and both CL and HC (16%)...
January 16, 2017: Journal of Anesthesia
https://www.readbyqxmd.com/read/28090042/autoimmune-hepatitis-associated-with-immune-thrombocytopenic-purpura
#8
Akihiro Ito, Kaname Yoshizawa, Kazuya Fujimori, Susumu Morita, Takashi Shigeno, Toshitaka Maejima
Although autoimmune hepatitis (AIH) is frequently complicated with chronic thyroiditis or other autoimmune disorders, reports on its association with immune thrombocytopenic purpura (ITP) are scarce. We herein describe a case of AIH associated with ITP. A 75-year-old Japanese woman was admitted to our hospital due to increased aminotransferase levels and severe thrombocytopenia. Elevated serum immunoglobulin G (IgG) was detected, and tests for platelet-associated IgG and anti-nuclear antibody were positive...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28081351/the-effect-of-methylprednisolone-treatment-on-fibrinolysis-thecoagulation-system-and-blood-loss-in-cardiac-surgery
#9
Leila Ebrahimi, Maryam Kheirandish, Mahnoosh Foroughi
BACKGROUND/AIM: The purpose of this study was to examine steroid pretreatment in order to decrease postoperative coagulopathy disorders and bleeding. MATERIALS AND METHODS: In this randomized double-blinded study, the efficacy of low versus high doses of methylprednisolone on the coagulation system and postoperative bleeding was compared in patients who were undergoing cardiac surgery with cardiopulmonary bypass (CPB). The platelet response to agonists, D-dimer concentration, tissue plasminogen activator (tPA), plasminogen activator inhibitor (PAI-1) antigens, and platelet receptors CD42b, CD62P, and CD41a were evaluated...
December 20, 2016: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28078347/alterations-of-the-platelet-proteome-in-type-i-glanzmann-thrombasthenia-caused-by-different-homozygous-delg-frameshift-mutations-in-itga2b
#10
Stefan Loroch, Katharina Trabold, Stepan Gambaryan, Cora Reiß, Kathrin Schwierczek, Ingrid Fleming, Albert Sickmann, Wolfgang Behnisch, Barbara Zieger, René P Zahedi, Ulrich Walter, Kerstin Jurk
Glanzmann thrombasthenia (GT) is one of the best characterized inherited platelet function disorders but global platelet proteome has not been determined in these patients. We investigated the proteome and function of platelets from two patients with type I GT, caused by different homozygous ITGA2b mutations, from family members and unrelated controls. The global proteome of highly purified washed platelets was quantified by liquid chromatography-mass spectrometry (LC-MS) and targeted MS-methods. Platelet function was analysed by flow cytometry, light transmission aggregometry and flow-based assays...
January 12, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28072956/-clinical-and-immunological-analysis-of-the-patient-with-autoimmunity-due-to-germline-stat3-gain-of-function-mutation
#11
Y Ding, Y Zhang, Y P Wang, H Y Zhao, X M Chen, X H Xue, X M Bai, Y F An, Z Y Zhang, X M Tang, X D Zhao
Objective: To investigate the clinical and immunological laboratory features and gene mutation in a female patient who carried a germline gain-of-function mutation in STAT3. Method: A patient with lymphadenopathy and pancytopenia, visited the Department of Rheumatology and Immunology of Children's Hospital of Chongqing Medical University in May 2016. The clinical and laboratory characteristics, results of immunophenotyping and exome sequencing were analyzed retrospectively and related literature was reviewed...
January 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28069912/idiosyncratic-drug-induced-neutropenia-agranulocytosis
#12
Emmanuel Andrès, Rachel Mourot-Cottet, Frédéric Maloisel, François Séverac, Olivier Keller, Thomas Vogel, Martine Tebacher, Jean-Christophe Weber, Georges Kaltenbach, Jacques-Eric Gottenberg, Bernard Goichot, Jean Sibilia, Anne-Sophie Korganow, Raoul Herbrecht
BACKGROUD: Few data is currently available on neutropenia and agranulocytosis related to drug intake. We report here data on 203 patients with established idiosyncratic drug-induced agranulocytosis, followed up in a referral centre within a university hospital. PATIENTS AND METHODS: Data from 203 patients with idiosyncratic drug-induced agranulocytosis were retrospectively reviewed. All cases were extracted from a cohort study on agranulocytosis in the Strasbourg University Hospital (Strasbourg, France) RESULTS: : The mean age was 61...
January 9, 2017: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/28066748/the-use-of-platelet-rich-plasma-to-augment-conservative-and-surgical-treatment-of-hip-and-pelvic-disorders
#13
REVIEW
Matthew J Kraeutler, Tigran Garabekyan, Omer Mei-Dan
BACKGROUND: In recent years, platelet-rich plasma (PRP) has gained popularity within the orthopaedic community as a treatment modality to enhance tissue healing. PURPOSE: This review aims to concisely present the current indications for PRP injections in the treatment of hip and pelvic pathologies and to describe some novel applications for PRP which have not yet been reported in the literature. METHODS: We reviewed the literature on the non-operative and operative indications for PRP in the treatment of hip and pelvic pathologies...
July 2016: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28066016/thrombocytopenia-associated-with-olanzapine-a-case-report-and-review-of-literature
#14
Swapnajeet Sahoo, Himanshu Singla, M Spoorty, Pankaj Malhotra, Sandeep Grover
There is limited literature on olanzapine-associated thrombocytopenia. In this report, we present a case of a 32-year-old female, suffering from persistent delusional disorder who had thrombocytopenia (46,000/mm(3)) with the use of olanzapine 25 mg/day, 6 weeks after starting medication. Blood film did not reveal any evidence of any dysplastic cells, disturbance in the count of other cell lines, and autoimmune workup including antinuclear antibodies and anti-neutrophil cytoplasmic antibodies were found to be negative...
July 2016: Indian Journal of Psychiatry
https://www.readbyqxmd.com/read/28064294/primary-versus-secondary-immune-thrombocytopenia-in-adults-a-comparative-analysis-of-clinical-and-laboratory-attributes-in-newly-diagnosed-patients-in-southern-pakistan
#15
S Sultan, S J Ahmed, S Murad, S M Irfan
BACKGROUND: Immune thrombocytopenic purpura (ITP) is a hemorrhagic diathesis, characterized by platelets destruction alongside impaired production. Patients from Asian regions often exhibit distinctive characteristics in comparison to the western patients. We accomplished this study to evaluate the prevalence of primary versus secondary ITP along with the comparative analysis between them. The secondary objective was to determine the etiological spectrum of secondary ITP. METHODS: We illustrate the results of a large cohort of newly diagnosed adults ITP from southern Pakistan...
October 2016: Medical Journal of Malaysia
https://www.readbyqxmd.com/read/28064200/rare-variants-in-gp1bb-are-responsible-for-autosomal-dominant-macrothrombocytopenia
#16
Suthesh Sivapalaratnam, Sarah K Westbury, Jonathan C Stephens, Daniel Greene, Kate Downes, Anne M Kelly, Claire Lentaigne, William J Astle, Eric G Huizinga, Paquita Nurden, Sofia Papadia, Kathelijne Peerlinck, Christopher J Penkett, David J Perry, Catherine Roughley, Ilenia Simeoni, Kathleen Stirrups, Daniel P Hart, R Campbell Tait, Andrew D Mumford, Nihr BioResource, Michael A Laffan, Kathleen Freson, Willem H Ouwehand, Shinji Kunishima, Ernest Turro
The von Willebrand receptor complex, which is composed of the glycoproteins Ibα and Ibβ, V and IX, plays an essential role in the earliest steps in hemostasis. Over the last four decades, it has become apparent that loss of function of any one of three of the genes encoding these glycoproteins namely, GP1BA, GP1BB and GP9, leads to autosomal recessive macrothrombocytopenia complicated by bleeding. A small number of variants in GP1BA have been reported to cause a milder and dominant form of macrothrombocytopenia but only two tentative reports exists of such a variant in GP1BB By analyzing data from a collection of over 1,000 genome-sequenced patients with a rare bleeding and/or platelet disorder, we have identified a significant association between rare monoallelic variants in GP1BB and macrothrombocytopenia...
November 14, 2016: Blood
https://www.readbyqxmd.com/read/28062601/bleeding-disorders-in-congenital-syndromes
#17
REVIEW
Susmita N Sarangi, Suchitra S Acharya
Pediatricians provide a medical home for children with congenital syndromes who often need complex multidisciplinary care. There are some syndromes associated with thrombocytopenia, inherited platelet disorders, factor deficiencies, connective tissue disorders, and vascular abnormalities, which pose a real risk of bleeding in affected children associated with trauma or surgeries. The risk of bleeding is not often an obvious feature of the syndrome and not well documented in the literature. This makes it especially hard for pediatricians who may care for a handful of children with these rare congenital syndromes in their lifetime...
January 6, 2017: Pediatrics
https://www.readbyqxmd.com/read/28060550/evaluating-platelet-function-disorders-in-children-with-bleeding-tendency-a-single-center-study
#18
Osama Tanous, Orna Steinberg Shemer, Joanne Yacobovich, Meira Zoldan, Yoseph Horovitz, Isaac Yaniv, Esther Rabizadeh, Hannah Tamary, Sigal Nakav, Judith Lahav
Platelet function disorders (PFDs) are a common cause of mild bleeding tendency. However, they cannot be recognized by standard screening studies. The gold standard test for PFD is platelet aggregation, performed by light transmission aggregometry (LTA). A newer and less validated method is the closure time (CT), performed by the platelet function Analyzer 100 (PFA-100). Data regarding the validity of these tests in children are limited. The aim of this study was to evaluate the usefulness of LTA and PFA-100 for the diagnosis of pediatric patients with bleeding tendency...
January 6, 2017: Platelets
https://www.readbyqxmd.com/read/28059092/bone-marrow-morphology-and-disease-progression-in-congenital-thrombocytopenia-a-detailed-clinicopathologic-and-genetic-study-of-eight-cases
#19
Hamilton C Tsang, James B Bussel, Susan Mathew, Yen-Chun Liu, Allison A Imahiyerobo, Attilio Orazi, Julia T Geyer
Patients with congenital thrombocytopenia have an increased risk of developing myeloid neoplasms. In these cases, the morphologic distinction between disease at baseline and at progression is challenging. This report analyzes clinicopathologic features of congenital thrombocytopenia with long-term follow-up at one referral center. Records from the last 20 years were searched for cases of congenital thrombocytopenia with bone marrow biopsies and peripheral blood smears. The clinical, morphologic, immunophenotypic, and molecular features were analyzed...
January 6, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28057742/dual-role-of-il-21-in-megakaryopoiesis-and-platelet-homeostasis
#20
Salima Benbarche, Catherine Strassel, Catherine Angénieux, Léa Mallo, Monique Freund, Christian Gachet, François Lanza, Henri de la Salle
Gene profiling studies have indicated that in vitro differentiated human megakaryocytes express the receptor for IL-21 (IL-21R), an immunostimulatory cytokine associated with inflammatory disorders and currently under evaluation in cancer therapy. The aim of this study was to investigate whether IL-21 modulates megakaryopoiesis. We first checked the expression of IL-21 receptor on human bone marrow and in vitro differentiated megakaryocytes. Then, we investigated the effect of IL-21 on the in vitro differentiation of human blood CD34+ progenitors into megakaryocytes...
January 5, 2017: Haematologica
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