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Tirofiban

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https://www.readbyqxmd.com/read/28184261/dual-antiplatelet-therapy-and-non-cardiac-surgery-evolving-issues-and-anesthetic-implications
#1
REVIEW
Jong Wook Song, Sarah Soh, Jae-Kwang Shim
Dual antiplatelet therapy (DAPT) consisting of aspirin plus a P2Y12 inhibitor (clopidogrel, prasugrel, or ticagrelor) is imperative for the treatment of acute coronary syndrome, particularly during the re-endothelialization period after percutaneous coronary intervention (PCI). When patients undergo surgery during this period, the consequences of stent thrombosis are far more serious than those of bleeding complications, except in cases of intracranial surgery. The recommendations for perioperative DAPT have changed with emerging evidence regarding the improved efficacy of non-first-generation drug (everolimus, zotarolimus)-eluting stents (DES)...
February 2017: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/28180001/assessment-of-platelet-function-in-patients-receiving-tirofiban-early-after-primary-coronary-intervention
#2
REVIEW
Péter Kupó, Dániel Aradi, Adrienn Tornyos, Margit Tőkés-Füzesi, András Komócsi
BACKGROUND: Following percutaneous coronary intervention, combined antiplatelet therapy is necessary. Platelet function testing (PFT) has prognostic value and may be applied in the risk assessment of acute coronary syndrome. In case of combined antiplatelet therapy, PFT may require special laboratory methods, as different antiplatelet agents may influence test results. MATERIALS AND METHODS: Platelet functions were measured in stent thrombosis-segment elevation myocardial infarction patients receiving aspirin, clopidogrel, and tirofiban...
December 2016: Interventional Medicine & Applied Science
https://www.readbyqxmd.com/read/28169555/aspiration-thrombectomy-and-intracoronary-tirofiban-via-guideliner-%C3%A2-catheter-for-a-thrombosed-aneurysmal-vessel
#3
James Fry, Ali Naqvi, Amit Bahia, Arnold Seto
A 52-year-old Asian male with no traditional risk factors for coronary artery disease presented with acute coronary syndrome. Coronary angiography showed complete thrombotic occlusion of the left circumflex with a large thrombus burden in the setting of diffuse aneurysmal enlargement of the coronary arteries consistent with antecedent Kawasaki disease. Manual thrombectomy with adjunctive intracoronary tirofiban was performed utilizing the GuideLiner catheter. Stent implantation was deferred. Follow-up imaging 48 h later showed preserved coronary flow and decreased thrombus burden...
February 7, 2017: Future Cardiology
https://www.readbyqxmd.com/read/28155889/platelets-protect-lung-from-injury-induced-by-systemic-inflammatory-response
#4
Shuhua Luo, Yabo Wang, Qi An, Hao Chen, Junfei Zhao, Jie Zhang, Wentong Meng, Lei Du
Systemic inflammatory responses can severely injure lungs, prompting efforts to explore how to attenuate such injury. Here we explored whether platelets can help attenuate lung injury in mice resulting from extracorporeal circulation (ECC)-induced systemic inflammatory responses. Mice were subjected to ECC for 30 min, then treated with phosphate-buffered saline, platelets, the GPIIb/IIIa inhibitor Tirofiban, or the combination of platelets and Tirofiban. Blood and lung tissues were harvested 60 min later, and lung injury and inflammatory status were assessed...
February 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/27984753/validated-spectrofluorimetric-methods-for-the-determination-of-apixaban-and-tirofiban-hydrochloride-in-pharmaceutical-formulations
#5
Ramzia I El-Bagary, Ehab F Elkady, Naira A Farid, Nadia F Youssef
Apixaban and Tirofiban Hydrochloride are low molecular weight anticoagulants. The two drugs exhibit native fluorescence that allow the development of simple and valid spectrofluorimetric methods for the determination of Apixaban at λ ex/λ em=284/450nm and tirofiban HCl at λ ex/λ em=227/300nm in aqueous media. Different experimental parameters affecting fluorescence intensities were carefully studied and optimized. The fluorescence intensity-concentration plots were linear over the ranges of 0.2-6μgml(-1) for apixaban and 0...
March 5, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/27982267/in-lab-upfront-use-of-tirofiban-may-reduce-the-occurrence-of-no-reflow-during-primary-percutaneous-coronary-intervention-a-pilot-randomized-study
#6
Igor Matos Lago, Gustavo Caires Novaes, André Vannucchi Badran, Rafael Brolio Pavão, Ricardo Barbosa, Geraldo Luiz de Figueiredo, Moysés de Oliveira Lima, Jorge Luiz Haddad, André Schmidt, José Antônio Marin
Background: Despite successful opening of culprit coronary artery, myocardial reperfusion does not always follows primary percutaneous coronary intervention (PPCI). Glycoprotein IIb/IIIa inhibitors are used in the treatment of no-reflow (NR), but their role to prevent it is unproven. Objective: To evaluate the effect of in-lab administration of tirofiban on the incidence of NR in ST-elevation myocardial infarction (STEMI) treated with PPCI. Methods: STEMI patients treated with PPCI were randomized (24 tirofiban and 34 placebo) in this double-blinded study to assess the impact of intravenous tirofiban on the incidence of NR after PPCI according to angiographic and electrocardiographic methods...
November 2016: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/27981920/in-silico-analysis-of-amotosalen-hydrochloride-binding-to-cd-61-of-platelets
#7
Hammad Tufail Chaudhary
OBJECTIVE: To determine the docking of Amotosalen hydrochloride (AH) at CD-61 of platelets, and to suggest the cause of bleeding in AH treated platelets transfusion. STUDY DESIGN: Descriptive study. PLACE AND DURATION OF STUDY: Medical College, Taif University, Taif, Saudi Arabia, from October 2014 to May 2015. METHODOLOGY: The study was carried out in-silico. PDB (protein data bank) code of Tirofiban bound to CD-61 was 2vdm...
November 2016: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/27899850/evaluation-of-short-and-long-term-efficacy-of-combined-intracoronary-administration-of-high-dose-adenosine-and-tirofiban-during-primary-percutaneous-coronary-intervention
#8
Yanbing Li, Qiang Li, Feiou Li, Min Zong, Guobin Miao, Xinchun Yang, Zichuan Tong, Jianjun Zhang
BACKGROUND: To assess the influence of combined intracoronary application of high-dose adenosine and tirofiban in primary percutaneous coronary intervention (PCI) on clinical events and cardiac function. METHODS: Our study evaluated consecutive patients with acute ST-segment elevation myocardial infarction undergoing primary PCI, who were randomly divided into adenosine group (n = 130) and control group (n = 128). Combined with thrombus aspiration and then intracoronary tirofiban, the adenosine group received intracoronary adenosine (2 mg) through the aspiration catheter 2 times...
November 2016: Acta Cardiologica Sinica
https://www.readbyqxmd.com/read/27891513/clinic-predictive-factors-for-insufficient-myocardial-reperfusion-in-st-segment-elevation-myocardial-infarction-patients-treated-with-selective-aspiration-thrombectomy-during-primary-percutaneous-coronary-intervention
#9
Jinfan Tian, Yue Liu, Xiantao Song, Min Zhang, Feng Xu, Fei Yuan, Shuzheng Lyu
Background. Insufficient data are available on the potential benefit of selective aspiration and clinical predictors for no-reflow in STEMI patients undergoing primary percutaneous coronary intervention (PPCI) adjunct with aspiration thrombectomy. Objective. The aim of our study was to investigate clinical predictors for insufficient reperfusion in patients with high thrombus burden treated with PPCI and manual aspiration thrombectomy. Methods. From January 2011 till December 2015, 277 STEMI patients undergoing manual aspiration thrombectomy and PPCI were selected and 202 patients with a Thrombolysis in Myocardial Infarction (TIMI) thrombus grade 4~5 were eventually involved in our study...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27852380/-clinical-analysis-of-endovascular-strategies-in-the-treatment-of-vertebrobasilar-dissecting-aneurysms
#10
Y Z Zang, Z G Wang, C W Wang, Y Zhang, X Ding, X F Wang
Objective: To evaluate the efficacy and safety of endovascular strategies for vertebrobasilar dissecting aneurysm (VBDA) and analyze advantages and disadvantages of different endovascular methods for the treatment of VBDA through long-term follow-up. Methods: Retrospectively analyzing was used for the clinical information of 45 cases of vertebrobasilar dissecting aneurysms treated with endovascular methods in our department from January 2007 to December 2015. The treatment modalities were classified into reconstructive surgery and destructive surgery that were based on parent artery preservation...
November 8, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27842901/comparison-of-heparin-bivalirudin-and-different-glycoprotein-iib-iiia-inhibitor-regimens-for-anticoagulation-during-percutaneous-coronary-intervention-a-network-meta-analysis
#11
Michael J Lipinski, Regina C Lee, Michael A Gaglia, Rebecca Torguson, Hector M Garcia-Garcia, Augusto D Pichard, Lowell F Satler, Ron Waksman
BACKGROUND/PURPOSE: Numerous GPIs are available for PCI. Although they were tested in randomized controlled trials, a comparison between the different GPI strategies is lacking. Thus, we performed a Bayesian network meta-analysis to compare different glycoprotein IIb/IIIa inhibitor (GPI) strategies with heparin and bivalirudin for percutaneous coronary intervention (PCI). METHODS: MEDLINE, Cochrane CENTRAL, and ClinicalTrials.gov were searched by two independent reviewers for randomized controlled trials comparing high-dose bolus tirofiban, abciximab, eptifibatide, heparin with provisional glycoprotein IIb/IIIa inhibitors, and bivalirudin with provisional GPI that reported clinical outcomes...
December 2016: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/27827357/platelet-integrin-%C3%AE-iib%C3%AE-3-inhibitor-rescues-progression-of-apoptosis-in-human-platelets
#12
Jie Zhu, Qinghang Wang, Yumei Nie, Rong Yan, Kesheng Dai, Birong Zhou
BACKGROUND Apoptosis plays an important role in the physiology of platelet function. We aimed to detect the effect of the platelet integrin αIIbβ3 inhibitor, tirofiban, on apoptotic events, including mitochondrial inner-membrane potential (ΔΨm), phosphatidylserine (PS) exposure on platelet surface, and the generation of reactive oxygen species (ROS), when washed platelets were stimulated with thrombin. MATERIAL AND METHODS The study included washed platelets from healthy humans, divided into 4 groups: vehicle, and tirofiban (0...
November 9, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27788009/reaction-of-alkyl-halides-with-rongalite-one-pot-and-telescoped-syntheses-of-aliphatic-sulfonamides-sulfonyl-fluorides-and-unsymmetrical-sulfones
#13
Andre Shavnya, Steven B Coffey, Kevin D Hesp, Stuart C Ross, Andy S Tsai
An efficient methodology has been developed for the one-pot or telescoped synthesis of aliphatic sulfonamides, sulfonyl fluorides, and unsymmetrical sulfones on the basis of interrupted alkylation of sodium hydroxymethylsulfinate (rongalite) with alkyl halides. The protocols are conducted under mild conditions, use inexpensive and shelf-stable reagents, and are not sensitive to air/moisture. These conditions can be applied in rapid parallel chemical synthesis, which was demonstrated by the preparation of a small sulfonamide library based on the core structure of the anticoagulant drug Tirofiban...
November 18, 2016: Organic Letters
https://www.readbyqxmd.com/read/27766063/aspirin-plus-tirofiban-inhibit-the-thrombosis-induced-by-russell-s-viper-venom
#14
Ren-Chieh Wu, Ping-Tse Chou, Li-Kuang Chen
BACKGROUND: Thrombosis and coagulopathy are the commonest hematological manifestations of envenomation of Russell's viper venom (RVV). Factor X is activated by a factor X-activating enzyme from Russell's viper venom (RVV-X) to start the coagulation cascade. We established an animal model with local ischemic effects induced by RVV. We tried to treat RVV envenomation with antiplatelets and anticoagulants without recourse to antivenom. METHODS: RVV was injected into the foot pad of mice...
2016: Thrombosis Journal
https://www.readbyqxmd.com/read/27751310/a-rare-malady-with-a-rarer-complication
#15
Arun Gopi, Placid Sebastian, C D Ramakrishna
Isolated ventricular noncompaction (IVNC) is an unclassified cardiomyopathy characterized by prominent intraventricular trabeculations separated by deep intertrabecular recesses. Although microvascular dysfunction is known, myocardial infarction is rare and usually seen as a consequence of coincidental coronary artery disease. We report the case of a 19-year-old male patient who presented to us with symptoms and signs of heart failure. Echocardiography revealed IVNC with severe left ventricular dysfunction...
September 2016: Indian Heart Journal
https://www.readbyqxmd.com/read/27713618/radiolabeled-tirofiban-a-potential-radiopharmaceutical-for-detection-of-deep-venous-thrombosis
#16
Marija Darkovska-Serafimovska, Emilija Janevik-Ivanovska, Icko Djorgoski, Zorica Arsova-Sarafinovska, Milka Zdravkovska, Trajan Balkanov, Nenad Ugresic
AIM: The aim of this study was to investigate the possibility of using (99m)technetium ((99m)Tc)-labeled tirofiban (a reversible antagonist of glycoprotein IIb/IIIa) for detection of deep venous thrombosis (DVT) in rats without causing an antiplatelet effect. METHODS: The ability of in vitro tirofiban to inhibit adenosine 5'-diphosphate (ADP)-induced platelet aggregation was evaluated using optical aggregometer. Binding of (99m)Tc-tirofiban to platelets was evaluated...
2016: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/27677411/efficiency-and-safety-of-bivalirudin-in-patients-undergoing-emergency-percutaneous-coronary-intervention-via-radial-access-a-subgroup-analysis-from-the-bivalirudin-in-acute-myocardial-infarction-versus-heparin-and-gpi-plus-heparin-trial
#17
Heyang Wang, Yi Li, Hongliang Cong, Shifang Ding, Bin Liu, Lu Li, Yundai Chen, Shaobin Jia, Quanmin Jing, Xin Zhao, Haiwei Liu, Zhenyang Liang, Jing Li, Dan Bao, Yaling Han
OBJECTIVES: To explore the efficiency and safety of bivalirudin in patients undergoing emergency percutaneous coronary intervention via radial access. BACKGROUND: Bivalirudin reduces bleeding risks over heparin in patients undergoing PCI. However, bleeding advantages of bivalirudin in patients undergoing transradial intervention is uncertain. METHODS: In the BRIGHT trial, 1,723 patients underwent emergency PCI via radial access, with 576 patients in the bivalirudin arm, 576 in the heparin arm and 571 in the heparin plus tirofiban arm...
September 28, 2016: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/27662032/design-synthesis-and-evaluation-of-novel-2-amino-3-naphth-2-yl-propanoic-acid-derivatives-as-potent-inhibitors-of-platelet-aggregation
#18
Zhouling Xie, Benimana Oscar, Lulu Zhao, Xue Ding, Chen Cao, Sen Feng, Han Li, Chen Pan, Ziyi Bian, Yang Li, Weijun Wang, Yi Kong, Zhiyu Li
Based upon LX2421, a previously identified antiplatelet aggregation agent, a series of novel 2-amino-3-(naphth-2-yl)propanoic acid derivatives were designed, synthesized and evaluated. Among them, compounds LX14 and LX25 were identified as promising antiplatelet aggregation agents. The in vitro biologic study demonstrated that LX14 can block platelet aggregation induced by four different inducers and displays comparable potency in inhibiting GPIIb/IIIa receptor in comparison with Tirofiban. In addition, LX14 has much lower risk of bleeding than Tirofiban and shows significant antithrombotic activity in vivo...
January 5, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/27621948/mechanical-solitaire-thrombectomy-with-low-dose-booster-tirofiban-injection
#19
Duck-Ho Goh, Sung-Chul Jin, Hae Woong Jeong, Sam Yeol Ha
PURPOSE: Mechanical thrombectomy using a Solitaire stent has been associated with a high recanalization rate and favorable clinical outcome in intra-arterial thrombolysis. To achieve a higher recanalization rate for mechanical Solitaire thrombectomy, we used an intra-arterial low-dose booster tirofiban injection into the occluded segment after stent deployment. We report the safety and recanalization rates for mechanical Solitaire thrombectomy with a low-dose booster tirofiban injection...
September 2016: Neurointervention
https://www.readbyqxmd.com/read/27608821/safety-and-preliminary-efficacy-of-early-tirofiban-treatment-after-alteplase-in-acute-ischemic-stroke-patients
#20
Wei Li, Lu Lin, Meng Zhang, Ya Wu, Chengchun Liu, Xiaoshu Li, Shuhan Huang, Chunrong Liang, Yanjiang Wang, Jinhua Chen, Wuwei Feng
BACKGROUND AND PURPOSE: We investigated whether early initiation of tirofiban, a glycoprotein IIb/IIIa antagonist, is safe, can reduce the risk of reocclusion, and improve outcomes in acute ischemic stroke patients after alteplase. METHODS: Forty-one patients received alteplase followed by intravenous tirofiban infusion for at least 24 hours. The incidence of symptomatic intracranial hemorrhage, systematic bleedings, and death was recorded. The National Institutes of Health stroke scale score was evaluated at 24 hours and at day 7 (or discharge)...
October 2016: Stroke; a Journal of Cerebral Circulation
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