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https://www.readbyqxmd.com/read/28090771/differential-adhesive-bioactive-properties-of-polymeric-surface-coated-with-graphene-oxide-thin-film
#1
Sudhin Thampi, A Maya Nandkumar, Vignesh Muthuvijayan, Ramesh Parameswaran
Surface engineering of implantable devices involving polymeric biomaterials has become an essential aspect for medical implants. Surface enhancement technique can provide an array of unique surface properties that improves its biocompatibility and functionality as an implant. Polyurethane based implants that have found extensively acclaimed usage as an implant in biomedical applications, especially in the area of cardiovascular devices still lacks any mechanism to ward off bacterial or platelet adhesion. To bring out such a defense mechanism we are proposing a surface modification technique...
January 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28090042/autoimmune-hepatitis-associated-with-immune-thrombocytopenic-purpura
#2
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/28089463/anti-inflammatory-effects-of-the-selective-phosphodiesterase-3-inhibitor-cilostazol-and-antioxidants-enzymatically-modified-isoquercitrin-and-%C3%AE-lipoic-acid-reduce-dextran-sulphate-sodium-induced-colorectal-mucosal-injury-in-mice
#3
Yumi Kangawa, Toshinori Yoshida, Hajime Abe, Yoshiki Seto, Taishi Miyashita, Michi Nakamura, Tohru Kihara, Shim-Mo Hayashi, Makoto Shibutani
Developing effective treatments and preventing inflammatory bowel disease (IBD) are urgent challenges in improving patients' health. It has been suggested that platelet activation and reactive oxidative species generation are involved in the pathogenesis of IBD. We examined the inhibitory effects of a selective phosphodiesterase-3 inhibitor, cilostazol (CZ), and two antioxidants, enzymatically modified isoquercitrin (EMIQ) and α-lipoic acid (ALA), against dextran sulphate sodium (DSS)-induced colitis. BALB/c mice were treated with 0...
January 12, 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/28088581/a-stepwise-algorithm-using-a-at-a-glance-first-line-test-for-the-non-invasive-diagnosis-of-advanced-liver-fibrosis-and-cirrhosis
#4
Jérôme Boursier, Victor de Ledinghen, Vincent Leroy, Rodolphe Anty, Sven Francque, Dominique Salmon, Adrien Lannes, Sandrine Bertrais, Frederic Oberti, Isabelle Fouchard-Hubert, Paul Calès
BACKGROUND & AIMS: Chronic liver diseases (CLD) are highly frequent and thus mainly managed by non-hepatologists. Because they lack access to the best non-invasive tests of liver fibrosis, these physicians cannot accurately determine the disease severity and the need for referral to a hepatologist. We aimed to implement an algorithm, comprising a new first-line test usable by all physicians, for the detection of advanced liver fibrosis in all CLD patients. METHODS: Diagnostic study: 3,754 CLD patients with liver biopsy were 2:1 randomized into derivation and validation sets...
January 11, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28074788/comparison-of-two-doses-of-heparin-on-outcome-in-off-pump-coronary-artery-bypass-surgery-patients-a-prospective-randomized-control-study
#5
Murali Chakravarthy, Dattatreya Prabhakumar, Patil Thimmannagowda, Jayaprakash Krishnamoorthy, Antony George, Vivek Jawali
INTRODUCTION: While off pump coronary artery bypass surgery is practiced with an intention to reduce the morbidity associated with cardiopulmonary bypass, the resultant 'hypercoagulability' needs to be addressed. Complications such as cavitary thrombus possibly due to the hyper coagulability after off pump coronary artery bypass surgery have been described. Many clinicians use higher doses of heparin - up to 5 mg/kg in order to thwart this fear. Overall, there appears to be no consensus on the dose of heparin in off pump coronary artery bypass surgeries...
January 2017: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/28073784/platelets-and-neutrophil-extracellular-traps-collaborate-to-promote-intravascular-coagulation-during-sepsis-in-mice
#6
Braedon McDonald, Rachelle P Davis, Seok-Joo Kim, Mandy Tse, Charles T Esmon, Elzbieta Kolaczkowska, Craig N Jenne
Neutrophil extracellular traps (NETs; webs of DNA coated in anti-microbial proteins) are released into the vasculature during sepsis where they contribute to host defense, but also cause tissue damage and organ dysfunction. Various components of NETs have also been implicated as activators of coagulation. Using multi-color confocal intravital microscopy in mouse models of sepsis, we observed profound platelet aggregation, thrombin activation, and fibrin clot formation within (and downstream of) NETs in vivo...
January 10, 2017: Blood
https://www.readbyqxmd.com/read/28073783/podoplanin-expression-in-primary-brain-tumors-induces-platelet-aggregation-and-increases-risk-of-venous-thromboembolism
#7
Julia Riedl, Matthias Preusser, Pegah Mir Seyed Nazari, Florian Posch, Simon Panzer, Christine Marosi, Peter Birner, Johannes Thaler, Christine Brostjan, Daniela Lötsch, Walter Berger, Johannes A Hainfellner, Ingrid Pabinger, Cihan Ay
Venous thromboembolism (VTE) is common in patients with brain tumors, and underlying mechanisms are unclear. We hypothesized that podoplanin, a sialomucin-like glycoprotein, increases the risk of VTE in primary brain tumors via its ability to induce platelet aggregation. Immunohistochemical staining against podoplanin and intratumoral platelet aggregates was performed in brain tumor specimens of 213 patients (mostly high-grade gliomas [89%]) included in the Vienna Cancer and Thrombosis Study (CATS), a prospective observational cohort study of patients with newly diagnosed cancer or progressive disease aimed at identifying patients at risk of VTE...
January 10, 2017: Blood
https://www.readbyqxmd.com/read/28071872/mutant-botrocetin-2-inhibits-von-willebrand-factor-induced-platelet-agglutination
#8
T Matsui, A Hori, J Hamako, F Matsushita, Y Ozeki, Y Sakurai, M Hayakawa, M Matsumoto, Y Fujimura
BACKGROUND: Botrocetin-2 (Bot2) is a botrocetin-like protein composed of α and β subunits that have been cloned from the snake Bothrops jararaca. Bot2 binds specifically to von Willebrand factor (VWF), and the complex induces glycoprotein (GP) Ib-dependent platelet agglutination. OBJECTIVES: We exploited Bot2's VWF-binding capacity to try and create a mutant Bot2 that binds to VWF but inhibits platelet agglutination. METHODS AND RESULTS: Several point mutations were introduced into Bot2 cDNA, and the recombinant protein (rBot2) was purified on an anti-botrocetin column...
January 10, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28069912/idiosyncratic-drug-induced-neutropenia-agranulocytosis
#9
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/28069546/g004-a-synthetic-sulfonylurea-compound-exerts-anti-atherosclerosis-effects-by-targeting-sirt1-in-apoe-mice
#10
Lifen Qian, Lingman Ma, Guanzhong Wu, Qian Yu, Huisheng Lin, Qidi Ying, Dan Wen, Cong Gao
Atherosclerosis attracts increasing global attention because of its morbidity and mortality. G004, as a synthetic sulfonylurea compound, has been confirmed to have anti-hyperglycaemia, anti-platelet and anti-thrombus effects. The aim of the present study was to investigate whether G004 suppress the onset and development of atherosclerosis and illuminate its probable mechanism of action. ApoE(-/-) mice that were fed a high-fat diet were randomly divided into five groups by weight; subsequently, they were treated with vehicle, G004, at different doses or atorvastatin once daily for 12weeks...
January 6, 2017: Vascular Pharmacology
https://www.readbyqxmd.com/read/28068865/testing-for-homocysteine-in-clinical-practice
#11
John Nichols
The theory that raised blood homocysteine is a major factor in the development of cardiovascular disease was initially rejected by the medical establishment. Trials of a treatment to lower homocysteine in moderately advanced disease have failed to show benefits (except in those not treated with anti-platelet drug), but there is mounting evidence for a role in treatment of very early disease and as a preventive strategy. Recent evidence has shown that lowering of high blood homocysteine significantly slows cognitive decline and the brain shrinkage associated with Alzheimer's disease...
January 1, 2017: Nutrition and Health
https://www.readbyqxmd.com/read/28068529/impact-of-high-dose-statins-on-vitamin-d-levels-and-platelet-function-in-patients-with-coronary-artery-disease
#12
Monica Verdoia, Patrizia Pergolini, Roberta Rolla, Matteo Nardin, Alon Schaffer, Lucia Barbieri, Veronica Daffara, Paolo Marino, Giorgio Bellomo, Harry Suryapranata, Giuseppe De Luca
BACKGROUND: Statins represent a pivotal treatment in coronary artery disease, offering a reduction in cardiovascular risk even beyond their lipid-lowering action. However, the mechanism of these "pleiotropic" benefits of statins is poorly understood. Vitamin D has been suggested as a potential mediator of the anti-inflammatory, anti-thrombotic and vascular protecting effects of statins. Aim of present study was to assess the impact of a high-intensity statin therapy on vitamin D levels and platelet function in patients with coronary artery disease...
December 28, 2016: Thrombosis Research
https://www.readbyqxmd.com/read/28067100/effects-of-a-single-bout-of-strenuous-exercise-on-platelet-activation-in-female-apoe-ldlr-mice
#13
K Przyborowski, H Kassassir, M Wojewoda, K Kmiecik, B Sitek, K Siewiera, A Zakrzewska, A M Rudolf, R Kostogrys, C Watala, J A Zoladz, S Chlopicki
Strenuous physical exercise leads to platelet activation that is normally counterbalanced by the production of endothelium-derived anti-platelet mediators, including prostacyclin (PGI2) and nitric oxide (NO). However, in the case of endothelial dysfunction, e.g. in atherosclerosis, there exists an increased risk for intravascular thrombosis during exercise that might be due to an impairment in endothelial anti-platelet mechanisms. In the present work, we evaluated platelet activation at rest and following a single bout of strenuous treadmill exercise in female ApoE/LDLR(-)(/-) mice with early (3-month-old) and advanced (7-month-old) atherosclerosis compared to female age-matched WT mice...
January 9, 2017: Platelets
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/28065857/downstream-regulatory-element-antagonist-modulator-a-target-for-anti-thrombotic-agents
#15
Jaehyung Cho
Circulating platelets participate in the process of numerous diseases including thrombosis, inflammation, and cancer. Thus, it is of great importance to understand the underlying mechanisms mediating platelet activation under disease conditions. Emerging evidence indicates that despite the lack of a nucleus, platelets possess molecules that are involved in gene transcription in nucleated cells. This review will summarize downstream regulatory element antagonist modulator (DREAM), a transcriptional repressor, and highlight recent findings suggesting its novel non-transcriptional role in hemostasis and thrombosis...
January 5, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
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
#16
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/28061794/process-evaluation-of-the-data-driven-quality-improvement-in-primary-care-dqip-trial-active-and-less-active-ingredients-of-a-multi-component-complex-intervention-to-reduce-high-risk-primary-care-prescribing
#17
Aileen Grant, Tobias Dreischulte, Bruce Guthrie
BACKGROUND: Two to 4% of emergency hospital admissions are caused by preventable adverse drug events. The estimated costs of such avoidable admissions in England were £530 million in 2015. The data-driven quality improvement in primary care (DQIP) intervention was designed to prompt review of patients vulnerable from currently prescribed non-steroidal anti-inflammatory drugs (NSAIDs) and anti-platelets and was found to be effective at reducing this prescribing. A process evaluation was conducted parallel to the trial, and this paper reports the analysis which aimed to explore response to the intervention delivered to clusters in relation to participants' perceptions about which intervention elements were active in changing their practice...
January 7, 2017: Implementation Science: IS
https://www.readbyqxmd.com/read/28061032/effects-of-platelet-rich-plasma-with-concomitant-use-of-a-corticosteroid-on-tenocytes-from-degenerative-rotator-cuff-tears-in-interleukin-1%C3%AE-induced-tendinopathic-conditions
#18
Chris Hyunchul Jo, Seung Yeon Lee, Kang Sup Yoon, Sue Shin
BACKGROUND: A corticosteroid injection is commonly used to treat tendinopathy, but it has been associated with negative effects on tendon homeostasis. Platelet-rich plasma (PRP) is known to have proliferative and anabolic effects as well as cytoprotective effects against corticosteroids on tenocytes. However, the combined effects of a corticosteroid and PRP on the anti-inflammatory, matrix synthesis, and cytoprotective potential of tenocytes in conditions simulating tendinopathy have not been investigated...
January 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28060719/temporal-quantitative-phosphoproteomics-of-adp-stimulation-reveals-novel-central-nodes-in-platelet-activation-and-inhibition
#19
Florian Beck, Jörg Geiger, Stepan Gambaryan, Fiorella A Solari, Margherita Dell'Aica, Stefan Loroch, Nadine Mattheij, Igor Mindukshev, Oliver Pötz, Kerstin Jurk, Julia M Burkhart, Christian Fufezan, Johan W M Heemskerk, Ulrich Walter, René P Zahedi, Albert Sickmann
ADP enhances platelet activation by virtually any other stimulant to complete aggregation. It binds specifically to the G-protein coupled membrane receptors P2Y1 and P2Y12, stimulating intracellular signaling cascades leading to integrin αIIbβ3 activation, a process that is antagonized by endothelial prostacyclin. P2Y12 inhibitors are among the most successful anti-platelet drugs, however, show remarkable variability in efficacy. We reasoned whether a more detailed molecular understanding of ADP-induced protein phosphorylation could identify (i) critical hubs in platelet signaling towards aggregation, and (ii) novel molecular targets for anti-platelet treatment strategies...
November 9, 2016: Blood
https://www.readbyqxmd.com/read/28058802/increased-thrombin-generation-in-a-mouse-model-of-cancer-cachexia-is-partially-interleukin-6-dependent
#20
Caroline J Reddel, John D Allen, Anahid Ehteda, Ryland Taylor, Vivien M Y Chen, Jennifer L Curnow, Leonard Kritharides, Graham Robertson
BACKGROUND: Cancer cachexia and cancer-associated thrombosis are potentially fatal outcomes of advanced cancer which have not previously been mechanistically linked. The colon 26 (C26) carcinoma is a well-established mouse model of complications of advanced cancer cachexia, partially dependent on high levels of interleukin-6 (IL-6) produced by the tumor. OBJECTIVES: To assess if cancer cachexia altered coagulation state and if this was attributable to tumor IL-6 production...
January 6, 2017: Journal of Thrombosis and Haemostasis: JTH
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