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Anti Platelets

H Zöllner, R Jouni, S Panzer, A Khadour, L Janzen, J Wesche, M Ten Berg, S Schellong, A Heinken, A Greinacher, T Bakchoul
BACKGROUND: Protamine (PRT) is used to stabilize insulin in Neutral Protamine Hagedorn (NPH) insulin, a commonly used therapeutic agent for diabetes mellitus. Immunization against PRT/heparin-complexes is common in diabetic patients. OBJECTIVES: To investigate the impact of NPH-insulin on the interaction between anti-PRT/heparin antibodies and platelets. METHODS: The interaction between NPH-insulin and anti-PRT/heparin antibodies was tested using in-house enzyme immunoassays...
October 19, 2016: Journal of Thrombosis and Haemostasis: JTH
Marta Ferro, Hada C Macher, Pilar Noguerol, Pilar Jimenez-Arriscado, Patrocinio Molinero, Juan M Guerrero, Amalia Rubio
Fetal and Neonatal alloimmune thrombocytopenia (FNAIT) is a condition which could occur when pregnant women develop an alloimmunization against paternally inherited antigens of the fetal platelets. Approximately 80 % of FNAIT cases are caused by anti-HPA-1a, about 15 % by anti-HPA-5b and 5 % by other HPA antibodies. Only 2 % of the total population is HPA-1a negative (HPA-1b1b). The HPA-1a allele differs by one single nucleotide from HPA-1b allele, yet it represents around 27 % of total severe thrombocytopenias...
2016: Advances in Experimental Medicine and Biology
Sunil Kr Verma
A 62-year-old male was undergoing treatment of NHL with bone marrow involvement with thrombocytopenia. After 15min of starting of IV infusion of rituximab, he started having severe retrosternal chest pain, diagnosed as acute ST elevation inferior wall MI. Patient was pre-loaded with dual anti platelets. Coronary angiogram showed 100% occlusion of proximal RCA. Thrombosuction of this culprit RCA revealed underlying 90% stenosis. After that, PCI with balloon angioplasty of RCA was done. The procedure was terminated in the view of successful balloon angioplasty with good TIMI flow...
September 2016: Indian Heart Journal
Susanna Sainio, Kaija Javela, Jarno Tuimala, Katri Haimila
Lack of reliable laboratory parameters is the main challenge in the management of fetal and neonatal alloimmune thrombocytopenia (FNAIT). Despite the long-known association between the HLA-DRB3*01:01 allele and human platelet antigen 1a (HPA-1a) alloimmunisation, maternal human leucocyte antigen (HLA) typing has been of little clinical value. Recently, other DRB3 allele variants have been suggested to predict the severity of FNAIT. In this nationwide population-based retrospective cohort study, we performed extensive HLA typing of 96 women, accounting for 87% of our cohort of 110 families with confirmed or possible HPA-1a-immunisation...
October 17, 2016: British Journal of Haematology
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, Emmanuel Andrès
BACKGROUND: Little data is currently available in the literature on neutropenia and agranulocytosis in the elderly, and, to our knowledge, idiosyncratic drug-induced agranulocytosis is particularly poorly covered, or not at all. OBJECTIVE: We herein describe the clinical picture and outcome of patients aged ≥75 years with established idiosyncratic drug-induced agranulocytosis. PATIENTS AND METHODS: Data from 61 patients over 75 years old with idiosyncratic drug-induced agranulocytosis were retrospectively reviewed...
September 5, 2016: Drugs—Real World Outcomes
Amrita Saxena, Richa Raghuwanshi, Vijai Kumar Gupta, Harikesh B Singh
Indian cuisine is renowned and celebrated throughout the world for its spicy treat to the tongue. The flavor and aroma of the food generated due to the use of spices creates an indelible experience. Among the commonly utilized spices to stimulate the taste buds in Indian food, whole or powdered chilli constitutes an inevitable position. Besides being a vital ingredient of of Indian food, chilli occupy an important position as an economic commodity, a major share in Indian economy. Chilli also has uncountable benefits to human health...
2016: Frontiers in Microbiology
Jun Yamanouchi, Takaaki Hato, Sanshiro Shiraishi, Kazuto Takeuchi, Yoshihiro Yakushijin, Masaki Yasukawa
Vancomycin-induced thrombocytopenia is a rare adverse reaction that may be overlooked because no specific diagnostic test is currently available. We herein report a patient with vancomycin-induced immune thrombocytopenia who was diagnosed by the detection of vancomycin-dependent anti-platelet antibody with flow cytometry. An IgG antibody in the patient's serum reacted with platelets only in the presence of vancomycin. Severe thrombocytopenia gave rise to life-threatening gastrointestinal bleeding, which was quickly resolved after effective platelet transfusion following the cessation of vancomycin administration...
2016: Internal Medicine
Jun Fukihara, Yasuhiro Kondoh
Nintedanib is a new anti-fibrosis agent that is an intracellular tyrosine kinase inhibitor targeting platelet derived growth factor receptor, fibroblast growth factor receptor and vascular endothelial growth factor receptor. Although nintedanib is attracting much attention as a new treatment option for patients with idiopathic pulmonary fibrosis (IPF), the clinical evidence is limited mainly to the results from the dose-deciding phase II TOMORROW trial and phase III INPULSIS trials, which evaluated efficacy and safety of nintedanib for patients with IPF, prespecified subgroup analyses, pooled analyses and meta-analyses derived from those trials...
October 17, 2016: Expert Review of Respiratory Medicine
Ivan Netuka, Pierre-Yves Litzler, Michael Berchtold-Herz, Erwan Flecher, Daniel Zimpfer, Laura Damme, Kartik S Sundareswaran, David J Farrar, Jan D Schmitto
BACKGROUND: Current recommendations of antithrombotic therapy for HeartMate II (HMII) patients include the use of both an anticoagulant and an antiplatelet agent. Because bleeding is still the most frequent adverse event, the TRACE (STudy of Reduced Anti-Coagulation/Anti-platelet Therapy in Patients with the HeartMatE II) study was initiated to evaluate the incidence of adverse events in HMII patients on reduced antithrombotic (RT) therapy. METHODS: HMII patients (n = 101) from nine centers were enrolled in the European arm of TRACE and were managed on a single anticoagulant (vitamin K antagonist) with no antiplatelet agents...
October 12, 2016: Annals of Thoracic Surgery
Ursula Unterberger, Beate Eichelberger, Anja Ulz, Simon Panzer
In immune thrombocytopenia (ITP), antibodies reacting with platelet membrane glycoproteins (GP) mediate premature platelet cleavage, resulting in thrombocytopenia and therefore a risk of bleeding. These antibodies may induce complement activation, thus mediating complement-induced platelet destruction. In this study, we investigated the possibility of an additional complement-related pathogenic mechanism, where antibodies against the complement-regulatory factors CD55 and CD59 may directly interfere with normal complement function...
October 13, 2016: Platelets
Vandana Pradhan, Pallavi Pandit, Anjali Rajadhyaksha, Manisha Patwardhan, Prathamesh Surve, Pradnya Kamble, Maxime Lecerf, Jagadeesh Bayry, Srinivas Kaveri, K Ghosh, Milind Y Nadkar
OBJECTIVE: To identify the hematological manifestations and its association with serum ferritin levels in SLE patients from Western India. METHODS: Ninety clinically diagnosed SLE patients fulfilling ACR criteria were included. Disease activity was assessed at the time of evaluation using Systemic Lupus Erythematosus Disease Activity Index (SLEDAI). Sera were tested for serum ferritin levels by ELISA (Calbiotech, USA). Autoantibodies such as ANA, anti-dsDNA by indirect immunofluorescence test (IFA- Bio-Rad, USA) and anti-cardiolipin antibodies (ACA) to IgG and IgM isotypes and Anti-β2 GP antibodies to IgG and IgM isotypes were detected by ELISA using commercially available kits (Euroimmun, Lubeck, Germany)...
May 2016: Journal of the Association of Physicians of India
Gang Deng, Shifang Yu, Qiming Li, Yunlei He, Wei Liang, Lu Yu, Deyi Xu, Tao Sun, Ri Zhang, Qiang Li
OBJECTIVES: Immune thrombocytopenia (ITP) is an acquired and heterogeneous autoimmune-mediated hematological disease typically characterized by a low platelet count. Emerging evidence over the past several years suggests that platelet biogenesis and ageing are regulated, at least in part, by apoptotic mechanisms. However, the association between decreased platelets and apoptosis in ITP patients is poorly understood. To better understand the role of platelet apoptosis in ITP pathophysiology, we investigated apoptotic markers in platelets acquired from 40 chronic ITP patients...
October 13, 2016: Hematology (Amsterdam, Netherlands)
Brenna N Burkett, John M Thomason, Holly M Hurdle, Robert W Wills, Robin L Fontenot
OBJECTIVE: Determine the effects of nonsteroidal anti-inflammatory drugs (NSAID) on platelet function and thromboxane synthesis immediately after drug administration and following 5 days of NSAID administration in healthy horses. STUDY DESIGN: Randomized cross-over study. ANIMALS: Healthy adult horses (n=9; 6 geldings and 3 mares). METHODS: Horses received either flunixin meglumine (1.1 mg/kg IV every 12 hours), phenylbutazone (2...
October 12, 2016: Veterinary Surgery: VS
J N Seheult, D J Triulzi, L H Alarcon, J L Sperry, A Murdock, M H Yazer
BACKGROUND/OBJECTIVES: The safety of administering uncrossmatched, group O, cold-stored, whole blood (cWB) during civilian trauma resuscitation was evaluated. METHODS/MATERIALS: Male trauma patients with haemorrhage-induced hypotension who received leuko-reduced uncrossmatched group O+, low titer (<50) anti-A and -B, platelet-replete cWB during initial resuscitation were included. The biochemical markers of haemolysis (lactate dehydrogenase, total bilirubin, haptoglobin, creatinine, serum potassium) were measured on the day of cWB receipt (day 0), and over the next 2 days, reports of transfusion reactions and total blood product administration in first 24 h of admission were recorded...
October 12, 2016: Transfusion Medicine
Tao Yan, Poornima Venkat, Michael Chopp, Alex Zacharek, Ruizhuo Ning, Cynthia Roberts, Yi Zhang, Mei Lu, Jieli Chen
BACKGROUND AND PURPOSE: Comorbidity of diabetes mellitus and stroke results in worse functional outcome, poor long-term recovery, and extensive vascular damage. We investigated the neurorestorative effects and mechanisms of stroke treatment with human bone marrow-derived mesenchymal stromal cells (hMSCs) in type 2 diabetes mellitus (T2DM) rats. METHODS: Adult male Wistar rats were induced with T2DM, subjected to 2 hours of middle cerebral artery occlusion (MCAo) and treated via tail-vein injection with (1) PBS (n=8) and (2) hMSCs (n=10; 5×10(6)) at 3 days after MCAo...
October 11, 2016: Stroke; a Journal of Cerebral Circulation
Paul Owusu Donkor, Ying Chen, Liqin Ding, Feng Qiu
ETHNOPHARMACOLOGICAL RELEVANCE: Ligusticum species (Umbelliferae) have been widely used in traditional Chinese medicine, Korean folk medicine and Native American medicine for their medicinal and nutritional value. Decoctions of the rhizomes are used in treatment and prophylaxis of migraine, anaemia and cardiovascular conditions including stroke. AIM OF STUDY: This review is intended to fully compile the constituents of locally and traditionally used Ligusticum species, present their bioactivities and highlight potential leads for future drug design, and thus, provide a reference for further research and application of these species...
October 8, 2016: Journal of Ethnopharmacology
Marije M Kamphuis, Heidi Tiller, E S van den Akker, Magnus Westgren, Eleonor Tiblad, Dick Oepkes
OBJECTIVE: To evaluate the management and outcome of a large international cohort of cases of pregnancies complicated by fetal and neonatal alloimmune thrombocytopenia (FNAIT). METHODS: This was an observational prospective and retrospective cohort study of all cases of FNAIT entered into the international multicentre No IntraCranial Haemorrhage (NOICH) registry during the period of 2001-2010. We evaluated human platelet antigen (HPA) specificity, the antenatal and postnatal interventions performed, and clinical outcome...
October 12, 2016: Fetal Diagnosis and Therapy
Xiaoli Wei, Jie Gao, Ronnie H Fang, Brian T Luk, Ashley V Kroll, Diana Dehaini, Jiarong Zhou, Hyeon Woo Kim, Weiwei Gao, Weiyue Lu, Liangfang Zhang
Immune thrombocytopenia purpura (ITP) is characterized by the production of pathological autoantibodies that cause reduction in platelet counts. The disease can have serious medical consequences, leading to uncontrolled bleeding that can be fatal. Current widely used therapies for the treatment of ITP are non-specific and can, at times, result in complications that are more burdensome than the disease itself. In the present study, the use of platelet membrane-coated nanoparticles (PNPs) as a platform for the specific clearance of anti-platelet antibodies is explored...
October 5, 2016: Biomaterials
Shira Toledano, Huayi Lu, Agustina Palacio, Boaz Kigel, Ofra Kessler, Gilad Allon, Yoreh Barak, Gera Neufeld, Shlomit Schaal
Abnormal subretinal choroidal neovascularization (CNV) is a major cause of blindness in exudative age-related macular degeneration (AMD). Current anti-angiogenic treatments by VEGF sequestering agents have been successful, but a significant proportion of patients do not respond well to these treatments, and the response of others diminishes over time, suggesting that additional anti-angiogenic agents that function by separate mechanisms may be of use to such patients. We have previously found that a point mutated form of semaphorin-3E resistant to cleavage by furin like pro-protein convertases (UNCL-Sema3E) displays potent anti-angiogenic properties...
October 7, 2016: Experimental Eye Research
Bo Zhu, Yumei Chen, Xiaolu Shen, Xishi Liu, Sun-Wei Guo
BACKGROUND: Recently emerging evidence indicates that endometriotic lesions are wounds undergoing repeated tissue injury and repair (ReTIAR), and platelets induce epithelial-mesenchymal transition (EMT), fibroblast-to-myofibroblast transdifferentiation (FMT), leading ultimately to fibrosis. Due to the commonality of cyclic bleeding as in endometriosis, adenomyotic lesions are also wounds that undergo ReTIAR, and we have recently provided evidence corroborating platelet-induced EMT, FMT and fibrogenesis in adenomyosis...
October 10, 2016: Reproductive Biology and Endocrinology: RB&E
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