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https://www.readbyqxmd.com/read/27906062/severe-thrombocytopenia-in-a-child-with-typhoid-fever-a-case-report
#1
Mohammed Al Reesi, Glenn Stephens, Brendan McMullan
BACKGROUND: Although thrombocytopenia is common in typhoid fever, its course, response to treatment, and need for specific therapies such as platelet transfusion are not well characterized. CASE PRESENTATION: We report a case of typhoid fever in a 4-year-old Asian male returned traveler, admitted with prolonged fever and found to have severe thrombocytopenia (platelets 16 × 10(9)/L). Despite appropriate antibiotic therapy, his platelet recovery was slow, but did not lead to complications and he did not require platelet transfusion...
November 30, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27905868/short-term-effects-of-low-let-radiation-on-the-endothelial-barrier-uncoupling-of-pecam-1-and-the-production-of-endothelial-microparticles
#2
Thomas Templin, Preety Sharma, Peter Guida, Peter Grabham
A significant target for radiation-induced effects is the microvascular system, which is critical to healthy tissue function and its pathology is linked to disrupted endothelial barrier function. Low-linear energy transfer (LET) ionizing radiation is a source of noncancer pathologies in humans and little is known about the early events that could initiate subsequent diseases. However, it is well known that gamma radiation causes a very early disruption of the endothelial barrier at doses below those required for cytotoxic effects...
December 1, 2016: Radiation Research
https://www.readbyqxmd.com/read/27905681/childhood-immune-thrombocytopenia-a-nationwide-cohort-study-on-condition-management-and-outcomes
#3
Lamiae Grimaldi-Bensouda, Clémentine Nordon, Thierry Leblanc, Lucien Abenhaim, Slimane Allali, Corinne Armari-Alla, Claire Berger, Mary-France Courcoux, Fanny Fouyssac, Cécile Guillaumat, Corinne Guitton, Philippe Le Moine, Françoise Mazingue, Corinne Pondarré, Caroline Thomas, Marlène Pasquet, Yves Perel, Guy Leverger, Nathalie Aladjidi
OBJECTIVES: Nationwide prospective cohort study exploring (i) the factors associated with treatment initiation (vs. watchful waiting) in children with primary immune thrombocytopenia (ITP) followed in routine clinical practice and (ii) the predictors of chronicity at 12 months. PROCEDURE: Between 2008 and 2013, 23 centers throughout France consecutively included 257 children aged 6 months-18 years and diagnosed with primary ITP over a 5-year period. Data on ITP clinical features along with medical management were collected at baseline and 12 months...
December 1, 2016: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/27905629/-reasons-to-recommend-vaccination-against-dengue-in-easter-island-immunization-advisory-committee-of-sociedad-chilena-de-infectolog%C3%A3-a
#4
Alberto Fica, Marcela Potin, Gabriela Moreno, Liliana Véliz, Jaime Cerda, Carola Escobar, Jan Wilhelm
Dengue was first diagnosed on Easter Island on year 2002 and thereafter recurrent outbreaks have occurred involving different serotypes of dengue virus. Its vector, Aedes aegypti has not been eliminated despite the small size of the island. Conditions at the local hospital preclude adequate management of severe and hemorrhagic cases due to the absence of a Critical Care Unit as well as no availability of platelets, or plasma units for transfusion. Besides, transfer, of severely affected patients to continental Chile is cumbersome, slow and expensive...
August 2016: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/27905492/high-fidelity-computational-simulation-of-thrombus-formation-in-thoratec-heartmate-ii-continuous-flow-ventricular-assist-device
#5
Wei-Tao Wu, Fang Yang, Jingchun Wu, Nadine Aubry, Mehrdad Massoudi, James F Antaki
Continuous flow ventricular assist devices (cfVADs) provide a life-saving therapy for severe heart failure. However, in recent years, the incidence of device-related thrombosis (resulting in stroke, device-exchange surgery or premature death) has been increasing dramatically, which has alarmed both the medical community and the FDA. The objective of this study was to gain improved understanding of the initiation and progression of thrombosis in one of the most commonly used cfVADs, the Thoratec HeartMate II...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27905193/high-pretransplant-hepcidin-levels-are-associated-with-poor-overall-survival-and-delayed-platelet-engraftment-after-allogeneic-hematopoietic-stem-cell-transplantation
#6
Soichiro Sakamoto, Hiroshi Kawabata, Junya Kanda, Tatsuki Uchiyama, Chisaki Mizumoto, Toshiyuki Kitano, Tadakazu Kondo, Masakatsu Hishizawa, Naohisa Tomosugi, Akifumi Takaori-Kondo
Iron overload is considered a risk factor for mortality in patients with hematopoietic malignancies. Hepcidin is a key regulator of systemic iron balance. We previously reported dynamic changes of serum hepcidin-25 levels in patients with hematologic malignancies after allogeneic hematopoietic stem cell transplantation (allo-HSCT). In this study, we retrospectively analyzed the association of pretransplant hepcidin-25 levels with overall survival (OS), engraftment, and other clinical outcomes of allo-HSCT in patients with hematologic malignancies...
December 1, 2016: Cancer Medicine
https://www.readbyqxmd.com/read/27905125/gadd45%C3%AE-is-involved-in-the-apoptosis-of-lymphocytes-induced-by-riboflavin-and-ultraviolet-light
#7
Peng Yang, Huiqin Wen, Tao Zhong, Hailiang Hu, Bangqiang Zhu, Kang Xia, Mo Xu, Maohong Bian
BACKGROUND: Riboflavin plus ultraviolet (UV) pathogen reduction technology (RF-PRT) is an effective method for inactivating the residual white blood cells (WBCs) in blood components. The RF-PRT system for platelets is known to activate many signaling pathways, including p38 and NF-κB. Nevertheless, proteomic studies in WBCs after riboflavin plus UV treatment requires further analysis. STUDY DESIGN AND METHODS: ABO/D-matched lymphocytes were pooled, split, and treated with RF-PRT or UV light or left untreated...
December 1, 2016: Transfusion
https://www.readbyqxmd.com/read/27904973/platelet-reactivity-and-clinical-outcomes-in-patients-using-cyp3a4-metabolized-statins-with-clopidogrel-in-percutaneous-coronary-intervention
#8
Jin Sup Park, Kwang Soo Cha, Hye Won Lee, Jun-Hyok Oh, Jung Hyun Choi, Han Cheol Lee, Taek Jong Hong, Hyo Soo Kim
Statins are primarily metabolized by cytochrome P450 3A4 (CYP3A4), which reduces clopidogrel to its active metabolite. Recent studies suggest that CYP3A4-metabolized statins attenuate clopidogrel's anti-aggregatory effect on platelets. We aimed to assess the impact of concomitant CYP3A4-metabolized statin and clopidogrel use on antiplatelet activity and clinical outcomes in patients undergoing percutaneous coronary intervention (PCI). We enrolled 1187 patients from the HOST-ASSURE trial with platelet reactivity unit (PRU) values at both baseline and 1 month...
November 30, 2016: Heart and Vessels
https://www.readbyqxmd.com/read/27904905/idarucizumab-does-not-have-procoagulant-effects-assessment-of-thrombosis-biomarkers-in-healthy-volunteers
#9
Michael Schmohl, Stephan Glund, Akiko Harada, Susumu Imazu, Marina De Smet, Viktoria Moschetti, Steven Ramael, Ippei Ikushima, Fredrik Grünenfelder, Paul Reilly, Joachim Stangier
Idarucizumab, a humanised monoclonal antibody fragment, binds dabigatran with high affinity and immediately, completely and sustainably reverses dabigatran-induced changes on blood coagulation. The present analysis focuses on the evaluation of potential procoagulant properties of idarucizumab when administered in the absence of dabigatran. As part of two Phase I studies conducted in healthy Caucasian and Japanese male volunteers, the effect of idarucizumab (8 g as a 1-hour [h] infusion and 4 g as a 5-minute [min] infusion) and placebo on calibrated automated thrombography (CAT) was assessed using platelet-poor plasma samples...
December 1, 2016: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/27904611/selective-serotonin-reuptake-inhibitors-and-cardiovascular-events-a-systematic-review
#10
REVIEW
Mohammad Hassan Nezafati, Ali Eshraghi, Mohammad Vojdanparast, Saeed Abtahi, Pouya Nezafati
BACKGROUND: Given the importance of the role of depression in predicting the outcome of cardiovascular disorders, current medications for treating depression, particularly selective serotonin reuptake inhibitors (SSRIs), are taken into consideration. This study aimed to systematically review the published findings in the use of SSRIs and the risk for cardiac events. MATERIALS AND METHODS: An independent review of the Web of Science, PubMed, Scopus, Cochrane, CINAHL, index Copernicus, and Google Scholar, up to 2014, was performed...
2016: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/27904584/effectiveness-and-relevant-factors-of-platelet-rich-plasma-treatment-in-managing-plantar-fasciitis-a-systematic-review
#11
REVIEW
Seet Khing Chiew, Thamil Selvee Ramasamy, Farahnaz Amini
BACKGROUND: Plantar fasciitis (PF) is a common foot complaint, affects both active sportsmen and physically inactive middle age group. It is believed that PF results from degenerative changes rather than inflammation. Platelet-rich plasma (PRP) therapy has been introduced as an alternative therapy for PF. This study is aimed to systematically review to the effectiveness and relevant factors of PRP treatment in managing PF. MATERIALS AND METHODS: A search was conducted in electronic databases, including PubMed, Scopus, and Google Scholar using different keywords...
2016: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/27904574/comparison-of-early-period-results-of-blood-use-in-open-heart-surgery
#12
Serhat Huseyin, Volkan Yuksel, Orkut Guclu, Fatma Nesrin Turan, Suat Canbaz, Turan Ege, Hasan Sunar
BACKGROUND: Various adverse effects of homologous blood transfusion detected particularly in open heart surgery, in which it is frequently used, lead researchers to study on autologous blood use and to evaluate the patient's blood better. Due to the complications of homologous blood transfusion, development of techniques that utilize less transfusion has become inevitable. We aimed to evaluate the effects of acute normovolemic hemodilution (ANH) in patients undergoing open heart surgery...
2016: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/27904531/effects-of-hyperbaric-oxygen-therapy-combined-with-platelet-rich-plasma-on-diabetic-wounds-an-experimental-rat-model
#13
Gündüz Yümün, Cüneyt Kahaman, Nail Kahaman, Ulviye Yalçınkaya, Aydin Akçılar, Engin Akgül, Ahmet Hakan Vural
INTRODUCTION: Hyperbaric oxygen and platelet-rich plasma are used in the treatment of diabetic wounds. The aim of this study is to evaluate the effects of hyperbaric oxygen therapy and autologous platelet concentrates in healing diabetic wounds. MATERIAL AND METHODS: Thirty-six female Wistar albino rats were used in this study. Diabetes mellitus was induced chemically with an intraperitoneal injection of streptozotocin. The rats were divided into a control group, a hyperbaric oxygen group, a platelet-rich plasma group, and a combined therapy group...
December 1, 2016: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/27904529/anti-aggregatory-effect-of-boswellic-acid-in-high-fat-fed-rats-involvement-of-redox-and-inflammatory-cascades
#14
Mona Kamal Tawfik
INTRODUCTION: A high-fat diet is one of the main dietary factors promoting platelet aggregation. The present study was conducted to elucidate the involvement of boswellic acid (BA) on the platelet hyperaggregability in HFD-fed rats. As platelet hyperaggregability in HFD rats is closely linked to inflammation and enhanced free radical production, the present study was extended to evaluate the anti-inflammatory and anti-oxidative effect of BA on HFD-promoted platelet aggregation. MATERIAL AND METHODS: Rats were assigned to normal, HFD-fed, aspirin-treated (30 mg/kg), and BA-treated (250 and 500 mg/kg) groups...
December 1, 2016: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/27904271/histologic-evidence-of-new-collagen-formulation-using-platelet-rich-plasma-in-skin-rejuvenation-a-prospective-controlled-clinical-study
#15
Ozlem Karabudak Abuaf, Hamza Yildiz, Hüseyin Baloglu, Memet Ersan Bilgili, Hasan Aktug Simsek, Bilal Dogan
BACKGROUND: Platelet-rich plasma (PRP) is an autologous concentration of human platelets contained in a small volume of plasma and has recently been shown to accelerate rejuvenate aging skin by various growth factors and cell adhesion molecules. OBJECTIVE: This study was conducted to evaluate the efficacy and safety of intradermal injection of PRP in the human facial rejuvenation. METHODS: This study was a prospective, single-center, single-dose, open-label, non-randomized controlled clinical study...
December 2016: Annals of Dermatology
https://www.readbyqxmd.com/read/27904082/design-and-synthesis-of-non-peptide-rgd-mimics-for-evaluation-of-their-utility-as-anti-platelet-agents
#16
Kazuhiro Higuchi, Hideki Hikita, Asumi Murayama, Daichi Yuri, Natsu Kobayakawa, Takashi Takahashi, Shigeru Kojima, Hiroko Ueno, Tomomi Hatakeyama, Airi Kato, Masanori Tayu, Etsuko Oyama, Shigeo Sugiyama, Kazuyuki Ishii, Hidenobu Takahashi, Tomomi Kawasaki
Arg-Gly-Asp (RGD) mimics were synthesized and their anti-platelet activity was evaluated. A concise method was developed for the synthesis of the target compounds from dehydroepiandrosterone and Wieland-Miescher and Hajos-Parrish ketones, which are suitable for readily available platform. Among the synthesized compounds, the perhydronaphthalene framework with a 3-(4-piperidinyl)propoxyl structure 3e possessed the highest anti-aggregative activity. The IC50 values of 3e were 0.91 mM (ADP initiation) and 0...
2016: Chemical & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/27903864/oral-thrombin-inhibitor-aggravates-platelet-adhesion-and-aggregation-during-arterial-thrombosis
#17
Tobias Petzold, Manuela Thienel, Ildiko Konrad, Irene Schubert, Ron Regenauer, Boj Hoppe, Michael Lorenz, Annekathrin Eckart, Sue Chandraratne, Carsten Lennerz, Christof Kolb, Daniel Braun, Janina Jamasbi, Richard Brandl, Siegmund Braun, Wolfgang Siess, Christian Schulz, Steffen Massberg
In patients with atrial fibrillation, oral anticoagulation with oral thrombin inhibitors (OTIs), in contrast to vitamin K antagonists (VKAs), associates with a modest increase in acute coronary syndromes (ACSs). Whether this observation is causatively linked to OTI treatment and, if so, whether OTI action is the result of a lower antithrombotic efficacy of OTI compared to VKA or reflects a yet undefined prothrombotic activity of OTI remain unclear. We analyzed platelet function in patients receiving OTI or dose-adapted VKA under static and flow conditions...
November 30, 2016: Science Translational Medicine
https://www.readbyqxmd.com/read/27903653/the-phosphatidylinositol-3-4-5-trisphosphate-pi-3-4-5-p3-binder-rasa3-regulates-phosphoinositide-3-kinase-pi-3-kinase-dependent-integrin-%C3%AE-iib%C3%AE-3-outside-in-signaling
#18
Anthony M Battram, Tom N Durrant, Ejaife O Agbani, Kate J Heesom, David S Paul, Raymond Piatt, Alastair W Poole, Peter J Cullen, Wolfgang Bergmeier, Samantha F Moore, Ingeborg Hers
The class I phosphoinositide 3-kinase (PI 3-kinase) family of lipid kinases plays an important role in integrin αIIbβ3 function, thereby supporting thrombus growth and consolidation. Here, we identify the Ras/Rap1GAP Rasa3 (GAP1IP4BP) as a major phosphatidylinositol-3,4,5-trisphosphate (PI(3,4,5)P3)-binding protein in human platelets and a key regulator of integrin αIIbβ3 outside-in signaling. We demonstrate that cytosolic Rasa3 translocates to the plasma membrane in a PI 3kinase-dependent manner upon activation of human platelets...
November 30, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27903591/platelet-rich-plasma-powder-a-new-preparation-method-for-the-standardization-of-growth-factor-concentrations
#19
Matthias Kieb, Frank Sander, Cornelia Prinz, Stefanie Adam, Anett Mau-Möller, Rainer Bader, Kirsten Peters, Thomas Tischer
BACKGROUND: Platelet-rich plasma (PRP) is widely used in sports medicine. Available PRP preparations differ in white blood cell, platelet, and growth factor concentrations, making standardized research and clinical application challenging. PURPOSE: To characterize a newly standardized procedure for pooled PRP that provides defined growth factor concentrations. STUDY DESIGN: Controlled laboratory study. METHODS: A standardized growth factor preparation (lyophilized PRP powder) was prepared using 12 pooled platelet concentrates (PCs) derived from different donors via apheresis...
November 30, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27903583/aspirin-therapy-reduces-the-ability-of-platelets-to-promote-colon-and-pancreatic-cancer-cell-proliferation-implications-for-the-oncoprotein-c-myc
#20
Annachiara Mitrugno, Joanna L Sylman, Anh T P Ngo, Jiaqing Pang, Rosalie C Sears, Craig Williams, Owen J T McCarty
Aspirin, an anti-inflammatory and anti-thrombotic drug, has become the focus of intense research as a potential anti-cancer agent owing to its ability to reduce tumor proliferation in vitro and to prevent tumorigenesis in patients. Studies have found an anti-cancer effect of aspirin when used in low, anti-platelet doses. However, the mechanism(s) through which low dose aspirin works is poorly understood. In this study we aimed to determine the effect of aspirin on the crosstalk between platelets and cancer cells...
November 30, 2016: American Journal of Physiology. Cell Physiology
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