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https://www.readbyqxmd.com/read/28100965/aspirin-resistance-predicts-adverse-cardiovascular-events-in-patients-with-symptomatic-peripheral-artery-disease
#1
Tilak Pasala, Jennifer Soo Hoo, Mary Kate Lockhart, Rehan Waheed, Prasanna Sengodan, Jeffrey Alexander, Sanjay Gandhi
Antiplatelet therapy reduces the risk of myocardial infarction, stroke, and vascular death in patients who have symptomatic peripheral artery disease. However, a subset of patients who take aspirin continues to have recurrent cardiovascular events. There are few data on cardiovascular outcomes in patients with peripheral artery disease who manifest aspirin resistance. Patients with peripheral artery disease on long-term aspirin therapy (≥4 wk) were tested for aspirin responsiveness by means of the VerifyNow Aspirin Assay...
December 2016: Texas Heart Institute Journal
https://www.readbyqxmd.com/read/28065907/platelet-reactivity-in-human-immunodeficiency-virus-infected-patients-on-dual-antiplatelet-therapy-for-an-acute-coronary-syndrome-the-evere2st-hiv-study
#2
Marie Hauguel-Moreau, Franck Boccara, Anders Boyd, Joe-Elie Salem, Delphine Brugier, Angélique Curjol, Jean-Sébastien Hulot, Mathieu Kerneis, Sophie Galier, Ariel Cohen, Gilles Montalescot, Jean-Philippe Collet, Johanne Silvain
AIM: To explore platelet reactivity on dual antiplatelet therapy (DAPT) of acute coronary syndrome (ACS) patients infected with HIV. METHODS AND RESULTS: Acute coronary syndrome patients infected with HIV (n = 80) were matched to ACS patients without HIV (n = 160) on age, sex, diabetes, and DAPT (aspirin 100%, clopidogrel 68%, prasugrel 31%, ticagrelor 1%). Platelet reactivity was evaluated after ACS (>30 days) by measuring residual platelet aggregation (RPA) to aspirin and to P2Y12 inhibitors with light transmission aggregometry (LTA), VerifyNow aspirin assay (ARU), and P2Y12 assay (PRU) and with the VASP platelet reactivity index (VASP-PRI)...
January 8, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28062136/p2y12-receptor-inhibition-with-prasugrel-and-ticagrelor-in-stemi-patients-after-fibrinolytic-therapy-analysis-from-the-sampa-randomized-trial
#3
Leonardo de F C Guimarães, Philippe Généreux, Diego Silveira, Antonio Eduardo Pesaro, Felipe Falcão, Bruno Robalinho C Barbosa, Cristiano Freitas de Souza, Francisco A H Fonseca, Cláudia Maria Rodrigues Alves, Antônio Carlos de Camargo Carvalho, Gregg W Stone, Adriano Caixeta
BACKGROUND: A pharmacodynamic comparison between ticagrelor and prasugrel after fibrinolytic therapy has not yet been performed. METHODS: In the single-center SAMPA trial, 50 consecutive STEMI patients previously treated with clopidogrel and undergoing a pharmacoinvasive strategy were randomized to either a ticagrelor (n=25) 180mg loading dose followed by 90mg bid, or a prasugrel (n=25) 60mg loading dose followed by 10mg/day, initiated after fibrinolytic therapy but before angiography...
December 27, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/28058211/organ-transplantation-and-drug-eluting-stents-perioperative-challenges
#4
REVIEW
Aparna Dalal
Patients listed for organ transplant frequently have severe coronary artery disease (CAD), which may be treated with drug eluting stents (DES). Everolimus and zotarolimus eluting stents are commonly used. Newer generation biolimus and novolimus eluting biodegradable stents are becoming increasingly popular. Patients undergoing transplant surgery soon after the placement of DES are at increased risk of stent thrombosis (ST) in the perioperative period. Dual antiplatelet therapy (DAPT) with aspirin and a P2Y12 inhibitor such as clopidogrel, prasugrel and ticagrelor is instated post stenting to decrease the incident of ST...
December 24, 2016: World Journal of Transplantation
https://www.readbyqxmd.com/read/28033561/post-pregnancy-aspirin-resistance-appears-not-to-be-related-with-recurrent-hypertensive-disorders-of-pregnancy
#5
Carolien N H Abheiden, Wessel W Fuijkschot, Arda Arduç, Jeske J K van Diemen, Ankie M Harmsze, Marjon A de Boer, Abel Thijs, Johanna I P de Vries
OBJECTIVE: The FRUIT-RCT concluded that low-molecular-weight heparin added to aspirin compared to treatment with aspirin alone is beneficial in the prevention of early-onset hypertensive disorders of pregnancy (HD) in women with inheritable thrombophilia and prior HD and/or a small-for-gestational age (SGA) infant leading to delivery before 34 weeks gestation. The aim of this study is to answer the question whether aspirin resistance is associated with recurrent HD. STUDY DESIGN: Women with and without recurrent HD matched for age, study arm, and chronic hypertension were invited for this follow-up study 6-16 years after they participated in the FRUIT-RCT...
December 21, 2016: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/27995340/new-single-nucleotide-polymorphisms-associated-with-differences-in-platelet-reactivity-and-their-influence-on-survival-in-patients-with-type-2-diabetes-treated-with-acetylsalicylic-acid-an-observational-study
#6
Lukasz Milanowski, Justyna Pordzik, Piotr K Janicki, Agnieszka Kaplon-Cieslicka, Marek Rosiak, Michal Peller, Agata Tyminska, Krzysztof Ozieranski, Krzysztof J Filipiak, Grzegorz Opolski, Dagmara Mirowska-Guzel, Marek Postula
AIMS: Genetic polymorphisms may contribute to platelet reactivity in diabetic patients; however, the information on their influence on long-term antiplatelet therapy is lacking. Our aim was to evaluate the role of previously described genetic variants and platelet reactivity on risk of all-cause mortality and cardiovascular events. METHODS: Blood samples were obtained from 303 Caucasian patients. Genome-wide genotyping was performed using Illumina Human Omni 2.5-Quad microarrays, and individual genotyping of selected SNPs was performed using a custom Sequenom iPLEX assay in conjunction with the Mass ARRAY platform...
December 19, 2016: Acta Diabetologica
https://www.readbyqxmd.com/read/27981489/influence-of-low-dose-proton-pump-inhibitors-administered-concomitantly-or-separately-on-the-anti-platelet-function-of-clopidogrel
#7
Takahisa Furuta, Mitsushige Sugimoto, Chise Kodaira, Masafumi Nishino, Mihoko Yamade, Takahiro Uotani, Shu Sahara, Hitomi Ichikawa, Takuma Kagami, Moriya Iwaizumi, Yasushi Hamaya, Satoshi Osawa, Ken Sugimoto, Kazuo Umemura
Proton pump inhibitors (PPIs) at low doses can effectively prevent gastrointestinal bleeding due to aspirin and are widely used in Japan for gastroprotection in patients taking anti-platelet agents. We examined the influence of different PPIs at low doses administered concomitantly or separately on anti-platelet functions of clopidogrel. In 41 healthy Japanese volunteers with different CYP2C19 genotypes who took clopidogrel 75 mg in the morning alone, or with omeprazole 10 mg, esomeprazole 10 mg, lansoprazole 15 mg, or rabeprazole 10 mg, either concomitantly in the morning or separately in the evening, we measured the inhibition of platelet aggregation (IPA, %) using VerifyNow P2Y12 assay at 4 h after the last clopidogrel dose on Day 7 of each regimen...
December 15, 2016: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/27936524/comparative-pharmacodynamic-effects-of-two-clopidogrel-formulations-under-steady-state-conditions-in-healthy-thai-volunteers%C3%A2
#8
Nontaya Nakkam, Somsak Tiamkao, Sirimas Kanjanawart, Kutcharin Phunikhom, Siriporn Tiamkao, Suda Vannaprasaht, Wongwiwat Tassaneeyakul, Wichittra Tassaneeyakul
OBJECTIVE: Clopidogrel is a commonly used antiplatelet aggregation agent. Compared with the reference clopidogrel product, most commercially available generic clopidogrel products contain different crystalline forms of clopidogrel. This study was aimed to compare the pharmacodynamics of a commonly used generic clopidogrel product in Thailand with the reference clopidogrel product under steady state conditions. METHODS: A multiple-dose, randomized 2-way crossover study was conducted in 32 healthy male Thai volunteers...
December 12, 2016: International Journal of Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/27929203/real-time-dose-adjustment-using-point-of-care-platelet-reactivity-testing-in-a-double-blind-study-of-prasugrel-in-children-with-sickle-cell-anaemia
#9
Joseph A Jakubowski, Carolyn C Hoppe, Chunmei Zhou, Brendan E Smith, Patricia B Brown, Lori E Heath, Baba Inusa, David C Rees, David S Small, Neehar Gupta, Suqin Yao, Matthew Heeney, Julie Kanter
Patients with sickle cell anaemia (SCA) have vaso-occlusive crises resulting from occlusive hypoxic-ischaemic injury. Prasugrel inhibits platelet activation and aggregation involved in SCA pathophysiology. Determining Effects of Platelet Inhibition on Vaso-Occlusive Events (DOVE) was a phase 3, double-blind, randomised, placebo-controlled trial assessing prasugrel efficacy. DOVE sought to bring patients' P2Y12 reaction unit (PRU) value within a targeted range via prasugrel dose adjustments using encrypted VerifyNow P2Y12(®) (VN-P2Y12) point-of-care testing and an interactive voice-response system (IVRS)...
December 8, 2016: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/27885904/the-effect-of-p2y12-inhibition-on-platelet-activation-assessed-with-aggregation-and-flow-cytometry-based-assays
#10
Tesse C Leunissen, Peter Paul Wisman, Thijs C van Holten, Philip G de Groot, Suzanne J Korporaal, Arnold C Koekman, Frans L Moll, Martin Teraa, Marianne C Verhaar, Gert Jan de Borst, Rolf T Urbanus, Mark Roest
Patients on P2Y12 inhibitors may still develop thrombosis or bleeding complications. Tailored antiplatelet therapy, based on platelet reactivity testing, might reduce these complications. Several tests have been used, but failed to show a benefit of tailored antiplatelet therapy. This could be due to the narrowness of current platelet reactivity tests, which are limited to analysis of platelet aggregation after stimulation of the adenosine diphosphate (ADP)-pathway. However, the response to ADP does not necessarily reflect the effect of P2Y12 inhibition on platelet function in vivo...
November 25, 2016: Platelets
https://www.readbyqxmd.com/read/27885888/cangrelor-in-combination-with-ticagrelor-provides-consistent-and-potent-p2y12-inhibition-during-and-after-primary-percutaneous-coronary-intervention-in-real-world-patients-with-st-segment-elevation-myocardial-infarction
#11
Moman A Mohammad, Pontus Andell, Sasha Koul, Stefan James, Fredrik Scherstén, Matthias Götberg, David Erlinge
Patients pretreated with ticagrelor with less than 1 hour from percutaneous coronary intervention (PCI) or receiving ticagrelor in cath lab were prospectively included and received cangrelor. Cangrelor was infused for 2 hours and platelet function was assessed as P2Y12 reactivity units (PRU) with the VerifyNow P2Y12 function assay before start of infusion, 15 min after the start of infusion, and 30 min after the end of infusion. A total of n = 32 patients with an average age of 68 (±13) years with n = 22 (69%) males were included...
November 25, 2016: Platelets
https://www.readbyqxmd.com/read/27836373/clinical-significance-of-platelet-reactivity-during-prasugrel-therapy-in-patients-with-acute-myocardial-infarction
#12
Tetsuya Sato, Yusuke Namba, Yuya Kashihara, Masamichi Tanaka, Soichiro Fuke, Akihisa Yumoto, Hironori Saito
BACKGROUND: Although some studies have examined platelet reactivity (PR) during prasugrel treatment, little is known about PR during the early treatment period and its clinical significance in Japan. METHODS: We investigated the early and medium-term efficacy and safety of prasugrel in patients with acute myocardial infarction (AMI) undergoing primary percutaneous coronary intervention (PCI). Seventy-eight patients were enrolled and PR was measured (in P2Y12 reaction units; PRU) by the VerifyNow P2Y12 assay (Accumetrics, San Diego, CA, USA)...
November 8, 2016: Journal of Cardiology
https://www.readbyqxmd.com/read/27809713/improved-predictive-value-of-grace-risk-score-combined-with-platelet-reactivity-for-1-year-cardiovascular-risk-in-patients-with-acute-coronary-syndrome-who-underwent-coronary-stent-implantation
#13
Shan Li, Hongbin Liu, Jianfeng Liu, Haijun Wang
Both high platelet reactivity (HPR) and Global Registry of Acute Coronary Events (GRACE) risk score have moderate predictive value for major adverse cardiovascular disease (CVD) events in patients with acute coronary syndrome (ACS) who underwent percutaneous coronary intervention (PCI), whereas the prognostic significance of GRACE risk score combined with platelet function testing remains unclear. A total of 596 patients with non-ST elevation ACS who underwent PCI were enrolled. The P2Y12 reaction unit (PRU) value was measured by VerifyNow P2Y12 assay and GRACE score was calculated by GRACE risk 2...
November 2016: Platelets
https://www.readbyqxmd.com/read/27773347/chewed-ticagrelor-tablets-provide-faster-platelet-inhibition-compared-to-integral-tablets-the-inhibition-of-platelet-aggregation-after-administration-of-three-different-ticagrelor-formulations-ipaad-tica-study-a-randomised-controlled-trial
#14
Dimitrios Venetsanos, Sofia Sederholm Lawesson, Eva Swahn, Joakim Alfredsson
AIMS: To provide pharmacodynamic data of crushed and chewed ticagrelor tablets, in comparison with standard integral tablets. METHODS: Ninety nine patients with stable angina were randomly assigned, in a 3:1:1 fashion, to one of the following 180mg ticagrelor loading dose (LD) formulations: A) Integral B) Crushed or C) Chewed tablets. Platelet reactivity (PR) was assessed with VerifyNow before, 20 and 60min after LD. High residual platelet reactivity (HRPR) was defined as >208 P2Y12 reaction units (PRU)...
January 2017: Thrombosis Research
https://www.readbyqxmd.com/read/27765738/flow-diverters-in-the-treatment-of-pediatric-cerebrovascular-diseases
#15
M Barburoglu, A Arat
BACKGROUND AND PURPOSE: There is very limited data concerning utilization of flow diverters in children. Our aim is to report results for the treatment of complex intracranial aneurysms and carotid cavernous fistulas by using flow diverters in children. MATERIALS AND METHODS: Retrospective review of children (17 years of age or younger) treated with flow diverters between May 2011 and July 2014 was performed. Clinical and laboratory data and angiographic findings were extracted...
October 20, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/27757517/safety-and-efficacy-of-antiplatelet-response-assay-and-drug-adjustment-in-coil-embolization-a-propensity-score-analysis
#16
Min Soo Kim, Kyung Il Jo, Je Young Yeon, Jong Soo Kim, Keon Ha Kim, Pyoung Jeon, Seung Chyul Hong
INTRODUCTION: The purpose of this study was to explore the safety and efficacy of an antiplatelet response assay and drug adjustment to prevent delayed thromboembolic events after stent-assisted coil embolization. METHODS: A total of 370 patients were enrolled in this study between December 2005 and July 2014. Of these, 124 patients were placed into the drug resistance test (DRT) group with drug adjustment according to response to an antiplatelet agent, and 246 patients comprised the control group with a standard antiplatelet regimen...
November 2016: Neuroradiology
https://www.readbyqxmd.com/read/27745943/-prevalence-and-prognosis-of-aspirin-resistance-in-critical-limb-ischemia-patients
#17
J-S Doly, E Lorian, I Desormais, J Constans, A Bura Rivière, P Lacroix
OBJECTIVES: To assess the prevalence and the association between aspirin resistance in critical limb ischemia patients using the VerifyNow(®) bed-side platelet test, and occurrence of cardiovascular morbidity and/or death at one year. MATERIALS AND METHODS: National multicenter prospective observational study related to COPART II centers. From 2010 through 2014, 64 subjects hospitalized for critical limb ischemia and already treated by aspirin before the VerifyNow(®) test were included...
December 2016: Journal des Maladies Vasculaires
https://www.readbyqxmd.com/read/27725493/pharmacodynamic-assessment-of-platelet-reactivity-after-a-loading-dose-of-prasugrel-or-clopidogrel-in-patients-with-st-segment-elevation-myocardial-infarction
#18
Shinya Ichikawa, Kengo Tsukahara, Yugo Minamimoto, Yuichiro Kimura, Yasushi Matsuzawa, Nobuhiko Maejima, Noriaki Iwahashi, Kiyoshi Hibi, Masami Kosuge, Toshiaki Ebina, Kazuo Kimura
BACKGROUND: Few studies have compared the platelet reactivity of prasugrel and clopidogrel in the acute phase of ST-segment elevation myocardial infarction (STEMI).Methods and Results:Primary percutaneous coronary intervention (PCI) was performed in 78 patients with STEMI within 12 h of onset. Patients were randomly assigned to receive a Japanese standard loading dose of prasugrel 20 mg or clopidogrel 300 mg. Platelet reactivity was serially assessed using the VerifyNow-P2Y12 assay, the results of which were expressed as P2Y12-reaction-units (PRU)...
October 6, 2016: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/27650615/the-diagnostic-utility-of-the-point-of-care-cyp2c19-genotyping-assay-in-patients-with-acute-coronary-syndrome-dosing-clopidogrel-comparison-with-platelet-function-test-and-snp-genotyping
#19
COMPARATIVE STUDY
Jae-Lim Choi, Bo-Ram Kim, Kwang-Sook Woo, Kyeong-Hee Kim, Jeong-Man Kim, Moo-Hyun Kim, Jin-Yeong Han
BACKGROUND: Clopidogrel is a widely used antiplatelet agent for dual antiplatelet therapy and metabolized by CYP2C19. The polymorphism of CYP2C19 is associated with the therapeutic effect of clopidogrel. METHODS: A total of 119 patients diagnosed with acute coronary syndrome (ACS) and underwent percutaneous coronary intervention (PCI) with drug-eluting stents was enrolled. Polymorphisms of CYP2C19 *2,*3,*17 were determined by the Spartan RX CYP2C19 and confirmed by SNP genotyping assay...
September 2016: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/27647183/head-to-head-comparison-of-two-point-of-care-platelet-function-tests-used-for-assessment-of-on-clopidogrel-platelet-reactivity-in-chinese-acute-myocardial-infarction-patients-undergoing-percutaneous-coronary-intervention
#20
Yi Yao, Jia-Hui Zhang, Xiao-Fang Tang, Chen He, Yuan-Liang Ma, Jing-Jing Xu, Ying Song, Ru Liu, Xian-Min Meng, Lei Song, Miao Wang, Run-Lin Gao, Jin-Qing Yuan
BACKGROUND: Platelet function tests are widely used in clinical practice to guide personalized antiplatelet therapy. In China, the thromboelastography (TEG) test has been well accepted in clinics, whereas VerifyNow, mainly used for scientific research, has not been used in routine clinical practice. The aim of the current study was to compare these two point-of-care platelet function tests and to analyze the consistency between the two tests for evaluating on-clopidogrel platelet reactivity in Chinese acute myocardial infarction patients undergoing percutaneous coronary intervention (PCI)...
2016: Chinese Medical Journal
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