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aspirin response

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https://www.readbyqxmd.com/read/28642210/rationale-and-design-for-a-randomized-comparison-of-efficacy-and-safety-between-aspirin-and-clopidogrel-in-atrial-fibrillation-patients-with-low-stroke-risk-cesac-af-trial
#1
Sang Min Park, Haemin Jeong, Mi-Hyang Jung, Kyung Soon Hong, Myeong-Ki Hong, Chang Seok Bang, Christopher Y Kim
BACKGROUND: Atrial fibrillation (AF) increases the risk of thromboembolic stroke. An oral anticoagulant should be administrated to prevent stroke in patients with moderate stroke risk (ie, CHA2DS2-VASc score>2). If the stroke risk is low (i.e. the score=1), however, antiplatelet agent such as aspirin is widely used. Aspirin can cause peptic ulcer disease (PUD) while its alternative, clopidogrel, theoretically does not. OBJECTIVE: To elucidate the efficacy and safety between aspirin and clopidogrel, a multicenter randomized controlled trial was designed in AF patients with low stroke risk...
June 19, 2017: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/28641310/potentiating-the-effects-of-radiotherapy-in-rectal-cancer-the-role-of-aspirin-statins-and-metformin-as-adjuncts-to-therapy
#2
K J Gash, A C Chambers, D E Cotton, A C Williams, M G Thomas
BACKGROUND: Complete tumour response (pCR) to neo-adjuvant chemo-radiotherapy for rectal cancer is associated with a reduction in local recurrence and improved disease-free and overall survival, but is achieved in only 20-30% of patients. Drug repurposing for anti-cancer treatments is gaining momentum, but the potential of such drugs as adjuncts, to increase tumour response to chemo-radiotherapy in rectal cancer, is only just beginning to be recognised. METHODS: A systematic literature search was conducted and all studies investigating the use of drugs to enhance response to neo-adjuvant radiation in rectal cancer were included...
June 22, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28637591/salicylate-induced-frequency-map-reorganization-in-four-subfields-of-the-mouse-auditory-cortex
#3
Yasutaka Yanagawa, Kengo Takasu, Hisayuki Osanai, Takashi Tateno
Salicylate is the active ingredient in aspirin, and in high-doses it is used as an experimental tool to induce transient hearing loss, tinnitus, and hyperacusis. These salicylate-induced perceptual disturbances are associated with tonotopic-map reorganization and neural activity modulation, and such neural correlates have been examined in the central auditory pathway, including the auditory cortex (AC). Although previous studies have reported that salicylate induces increases in noise-burst-evoked neural responses and reorganization of tonotopic maps in the primary AC, little is known about the effects of salicylate on other frequency-organized AC subfields such as the anterior auditory, secondary auditory, and dorsomedial fields...
June 10, 2017: Hearing Research
https://www.readbyqxmd.com/read/28614214/a-rare-case-of-multiple-thrombi-in-a-giant-left-atrium
#4
Alfredo Intorcia, Marco A Perrone, Riccardo Morgagni, Domenico Sergi, Massimo Marchei, Mauro Borzi, Francesco Romeo
: Giant left atrium is frequently associated with rheumatic mitral valve disease. The incidence of left atrial thrombus among patients with mitral stenosis and atrial fibrillation varies from 7 to 38%. Anticoagulation therapy achieves a high rate of resolution of left atrial appendage (LAA) and left atrial cavity thrombi, but in selected patients surgical therapy must be considered. An 81-year-old woman presented to our emergency department with repeated episodes of transient ischemic attack. She had a history of carotid artery stenosis, chronic lymphocytic leukemia, rheumatic heart disease, and paroxysmal atrial fibrillation...
June 12, 2017: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/28608165/platelet-related-biomarkers-and-their-response-to-inhibition-with-aspirin-and-p2y12-receptor-antagonists-in-patients-with-acute-coronary-syndrome
#5
Angela Lowenstern, Robert F Storey, Megan Neely, Jie-Lena Sun, Dominick J Angiolillo, Christopher P Cannon, Anders Himmelmann, Kurt Huber, Stefan K James, Hugo A Katus, Joao Morais, Agneta Siegbahn, Phillippe Gabriel Steg, Lars Wallentin, Richard C Becker
The PLATelet inhibition and patient Outcomes (PLATO) trial showed that treatment with ticagrelor reduced the rate of death due to vascular causes, myocardial infarction and stroke when compared to clopidogrel in patients with ST-elevation or non-ST-elevation acute coronary syndrome (ACS). While the comparative benefit of ticagrelor over clopidogrel increased over time, event rates accrued in both groups during the study period. The purpose of our biomarker-based exploratory analysis was to determine whether long-term platelet inhibition may be associated with platelet adaptation...
June 12, 2017: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/28589365/variability-of-platelet-response-to-clopidogrel-is-not-related-to-adverse-cardiovascular-events-in-patients-with-stable-coronary-artery-disease-undergoing-percutaneous-coronary-intervention
#6
Szymon Olędzki, Zdzisława Kornacewicz-Jach, Krzysztof Safranow, Radosław Kiedrowicz, Barbara Gawrońska-Szklarz, Maria Jastrzębska, Jarosław Gorący
BACKGROUND: Antiplatelet response to clopidogrel and its influence upon the risk of cardiovascular adverse events among patients with stable coronary artery disease undergoing percutaneous coronary intervention (PCI) has not been investigated fully. METHODS: Two hundred eleven patients treated with aspirin and clopidogrel were included in the study. Immediately before PCI, residual platelet reactivity testing with impedance aggregometry assay and a single-nucleotide polymorphism genotyping analysis targeting variants of CYP2C19, ABCB1, and PON1 genes was performed...
June 6, 2017: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28584607/essential-thrombocythemia-in-a-two-year-old-child-responsive-to-hydroxyurea-but-not-aspirin
#7
Tariq N Aladily, Randa S Mohammad, Ali Al-Khader, Abdalla S Awidi
Essential thrombocythemia (ET) is a myeloproliferative neoplasm that occurs mostly in patients above the age of 50 years. Its incidence in children is very rare, with around 100 cases reported in the literature. High-risk patients are defined by previous life threatening major thrombotic or severe hemorrhagic complication or age > 60. Those patients probably benefit from cytoreductive therapy. On the other hand, antiplatelet drugs are recommended for patients with low risk group. Although rare, ET should be considered in the differential diagnosis of persistent thrombocytosis in children, even at a very young age...
May 2017: Oman Medical Journal
https://www.readbyqxmd.com/read/28583164/health-professionals-views-on-the-barriers-and-enablers-to-evidence-based-practice-for-acute-stroke-care-a-systematic-review
#8
REVIEW
Leonard Baatiema, Michael E Otim, George Mnatzaganian, Ama de-Graft Aikins, Judith Coombes, Shawn Somerset
BACKGROUND: Adoption of contemporary evidence-based guidelines for acute stroke management is often delayed due to a range of key enablers and barriers. Recent reviews on such barriers focus mainly on specific acute stroke therapies or generalised stroke care guidelines. This review examined the overall barriers and enablers, as perceived by health professionals which affect how evidence-based practice guidelines (stroke unit care, thrombolysis administration, aspirin usage and decompressive surgery) for acute stroke care are adopted in hospital settings...
June 5, 2017: Implementation Science: IS
https://www.readbyqxmd.com/read/28580812/platelet-reactivity-in-stable-cardiovascular-patients-with-chronic-kidney-disease
#9
Thomas A Mavrakanas, Ahsan Alam, Jean-Luc Reny, Pierre Fontana
The study aimed to evaluate antiplatelet drug responsiveness in stable outpatients with cardiovascular disease and chronic kidney disease (CKD) and examine whether impaired antiplatelet drug responsiveness is associated with worse clinical outcomes in this population. Stable cardiovascular patients (n = 771) were enrolled at least one month after an acute ischemic atherothrombotic event. Antiplatelet drug responsiveness was assessed with specific assays (serum TxA2 for aspirin, the VASP assay for clopidogrel) and other aggregation-based assays using different agonists...
June 5, 2017: Platelets
https://www.readbyqxmd.com/read/28577671/dual-antiplatelet-therapy-in-patients-with-diabetes-and-acute-coronary-syndromes-managed-without-revascularization
#10
Anthony J Dalby, Shmuel Gottlieb, Derek D Cyr, Erik Magnus Ohman, Darren K McGuire, Witold Ruzyllo, Deepak L Bhatt, Stephen D Wiviott, Kenneth J Winters, Keith A A Fox, Paul W Armstrong, Harvey D White, Dorairaj Prabhakaran, Matthew T Roe
OBJECTIVE: Patients with diabetes mellitus (DM) presenting with acute coronary syndrome (ACS) and undergoing percutaneous coronary intervention (PCI) derived enhanced benefit with dual antiplatelet therapy (DAPT) with prasugrel vs. clopidogrel. The risk profile and treatment response to DAPT for medically managed ACS patients with DM remains uncertain. METHODS: The TRILOGY ACS trial compared aspirin + prasugrel vs. aspirin + clopidogrel for up to 30months in non-ST-segment elevation (NSTE) ACS patients managed medically without revascularization...
June 2017: American Heart Journal
https://www.readbyqxmd.com/read/28576652/platelet-function-testing-in-patients-with-acute-ischemic-stroke-an-observational-study
#11
Francesca Rosafio, Nicoletta Lelli, Stefano Mimmi, Laura Vandelli, Guido Bigliardi, Maria Luisa Dell'Acqua, Livio Picchetto, Roberta Pentore, Diana Ferraro, Tommaso Trenti, Paolo Nichelli, Andrea Zini
BACKGROUND: The measurement of platelet reactivity in patients with stroke undergoing antiplatelet therapies is not commonly performed in clinical practice. We assessed the prevalence of therapy responsiveness in patients with stroke and further investigated differences between patients on prevention therapy at stroke onset and patients naive to antiplatelet medications. We also sought differences in responsiveness between etiological subtypes and correlations between Clopidogrel responsiveness and genetic polymorphisms...
May 30, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28571537/synthesis-and-biological-evaluation-of-new-tyrosol-salicylate-derivatives-as-potential-anti-inflammatory-agents
#12
Rafael P Aguiar, Fahad S Aldawsari, Luiz A M Wiirzler, Saulo E Silva-Filho, Francielli M S Silva-Comar, Ciomar A Bersani-Amado, Carlos A Velázquez-Martínez, Roberto K N Cuman
Nonsteroidal anti-inflammatory drugs (NSAIDs) are the most commonly used medications in inflammatory illnesses. However, the gastrointestinal bleeding and toxicity associated with NSAIDs long term use prompted the quest towards investigations for new anti-inflammatory agents. Natural and natural-derived molecules proved its anti-inflammatory efficacy in vitro as well as in vivo. Given this background, the scope of this research involves structural changes of the natural polyphenol (tyrosol) generating two new salicylate derivatives and testing their biological properties , focusing in anti-inflammatory effects assessed in vitro and in vivo assays...
June 1, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28570221/nasal-ketorolac-challenge-using-acoustic-rhinometry-in-patients-with-aspirin-exacerbated-respiratory-disease
#13
J Quiralte-Castillo, M R Ávila-Castellano, S Cimbollek, P Benaixa, S Leguisamo, K Baynova, M Labella, J Quiralte
BACKGROUND AND OBJECTIVE: Safer and less time-consuming alternatives to single-blind placebo-controlled oral challenge (SBPCOC) have been sought for the diagnosis of aspirin-exacerbated respiratory disease (AERD). Nasal challenges with various nonsteroidal anti-inflammatory drugs and assessment methods have been developed. Objective: Our objective was to evaluate the utility and safety of nasal ketorolac challenge (NKC) using acoustic rhinometry in patients with suspected AERD. METHODS: The study population comprised 36 patients with suspected AERD...
June 2017: Journal of Investigational Allergology & Clinical Immunology
https://www.readbyqxmd.com/read/28551293/chronic-use-of-aspirin-and-total-white-matter-lesion-volume-results-from-the-women-s-health-initiative-memory-study-of-magnetic-resonance-imaging-study
#14
Andrea Holcombe, Eric Ammann, Mark A Espeland, Brendan J Kelley, JoAnn E Manson, Robert Wallace, Jennifer Robinson
OBJECTIVE: To investigate the relationship between aspirin and subclinical cerebrovascular heath, we evaluated the effect of chronic aspirin use on white matter lesions (WML) volume among women. METHODS: Chronic aspirin use was assessed in 1365 women who participated in the Women's Health Initiative Memory Study of Magnetic Resonance Imaging. Differences in WML volumes between aspirin users and nonusers were assessed with linear mixed models. A number of secondary analyses were performed, including lobe-specific analyses, subgroup analyses based on participants' overall risk of cerebrovascular disease, and a dose-response relationship analysis...
May 24, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28542447/exploratory-plasma-proteomic-analysis-in-a-randomized-crossover-trial-of-aspirin-among-healthy-men-and-women
#15
Xiaoliang Wang, Ali Shojaie, Yuzheng Zhang, David Shelley, Paul D Lampe, Lisa Levy, Ulrike Peters, John D Potter, Emily White, Johanna W Lampe
Long-term use of aspirin is associated with lower risk of colorectal cancer and other cancers; however, the mechanism of chemopreventive effect of aspirin is not fully understood. Animal studies suggest that COX-2, NFκB signaling and Wnt/β-catenin pathways may play a role, but no clinical trials have systematically evaluated the biological response to aspirin in healthy humans. Using a high-density antibody array, we assessed the difference in plasma protein levels after 60 days of regular dose aspirin (325 mg/day) compared to placebo in a randomized double-blinded crossover trial of 44 healthy non-smoking men and women, aged 21-45 years...
2017: PloS One
https://www.readbyqxmd.com/read/28534346/the-use-of-inexpensive-broad-spectrum-lower-toxicity-therapeutics-in-chronic-lymphocytic-leukemia
#16
Goran Marjanovic
The use of new and highly efficient targeted therapies for chronic lymphocytic leukemia (CLL) is costly and out of reach for many health care systems. On the other hand, in recent years, few inexpensive, broad-spectrum low-toxicity therapeutics have proven to be effective both in the preclinical and clinical settings. In early-stage CLL, the use of 2000 mg of epigallocatechin-3-gallate (EGCG) from the green tea extract twice a day was able to reduce the absolute leukocyte count. Supplementation of >2000 IU/day of Vitamin D in early low-risk CLL patients is able to delay disease progression and postpone the moment of initiation of the first treatment...
March 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28530483/carotidynia-in-high-altitude-travelers
#17
Andrea Parra, Tamuru Okada, Peter H Lin
Background Carotidynia is characterized by focal pain and tenderness of the carotid artery without associated hemodynamic or structural abnormalities. Carotid artery pathology has also been known to occur in high altitude due to aberrant baroreceptor response in the carotid bulb. Case Presentation We herein report two cases of high altitude-related idiopathic carotidynia. The first patient was a geologist who performed oil reserve survey in the Alaska Mountain, while the second patient was hiking in a mountain trail in Peru...
January 1, 2017: Vascular
https://www.readbyqxmd.com/read/28523478/anti-gpvi-fab-sar264565-effectively-blocks-gpvi-function-in-ex-vivo-human-platelets-under-arterial-shear-in-a-perfusion-chamber
#18
Peter Florian, Peter Wonerow, Sebastian Harder, Karina Kuczka, Michel Dubar, Jochen Graff
INTRODUCTION: Glycoprotein VI (GPVI) is the major platelet receptor for collagen-mediated platelet adhesion and activation. SAR264565 is an anti-GPVI-Fab, binds to GPVI with high affinity, and blocks GPVI function in human platelets in vitro. METHODS: The effect of SAR26456 on platelet responsiveness in the blood of 21 healthy male subjects was investigated using Sakariassen's ex vivo thrombogenesis perfusion chamber model on a collagen-coated surface under conditions mimicking arterial flow...
May 18, 2017: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28517974/the-impact-of-docosahexaenoic-acid-therapy-on-subgingival-plaque-microbiota
#19
Asghar Z Naqvi, Lin Mu, Hatice Hasturk, Thomas E Van Dyke, Kenneth J Mukamal, J Max Goodson
OBJECTIVE: The aim of this study was to evaluate the impact of docosahexaenoic acid (DHA) with low-dose aspirin therapy on periodontal bacterial profile in patients with periodontitis. BACKGROUND: We recently showed that oral DHA + aspirin therapy reduces periodontal pocket depth and local inflammatory mediators in gingival crevicular fluid (GCF) among patients with untreated chronic periodontal disease. Whether or not DHA + aspirin therapy influences specific bacterial burden in this setting is unknown...
May 18, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28511718/simultaneous-development-of-kawasaki-disease-following-acute-human-adenovirus-infection-in-monozygotic-twins-a-case-report
#20
Sayaka Fukuda, Shuichi Ito, Maya Fujiwara, Jun Abe, Nozomu Hanaoka, Tsuguto Fujimoto, Hiroshi Katsumori
BACKGROUND: The etiology of Kawasaki disease (KD) remains unknown. However, many studies have suggested that specific genetic factors and/or some infectious agents underlie the onset of KD. Previous studies have suggested that human adenovirus (HAdV) is one of the triggering pathogens of KD. Here, we report monozygotic twin boys who sequentially developed KD in conjunction with acute HAdV type 3 (HAdV-3) infection. CASE PRESENTATION: The patients were four-year-old monozygotic twin boys...
May 16, 2017: Pediatric Rheumatology Online Journal
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