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Tornyos D, Bálint A, Kupó P, El Abdallaoui OEA, Komócsi A. Antithrombotic Therapy for Secondary Prevention in Patients with Non-Cardioembolic Stroke or Transient Ischemic Attack: A Systematic Review. Life (Basel) 2021; 11:447. [PMID: 34063551 PMCID: PMC8156895 DOI: 10.3390/life11050447] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/11/2021] [Accepted: 05/12/2021] [Indexed: 11/23/2022] Open
Abstract
Stroke embodies one of the leading causes of death and disability worldwide. We aimed to provide a comprehensive insight into the effectiveness and safety of antiplatelet agents and anticoagulants in the secondary prevention of ischemic stroke or transient ischemic attack. A systematic search for randomized controlled trials, comparing antiplatelet or anticoagulant therapy versus aspirin or placebo among patients with ischemic stroke or transient ischemic attack, was performed in order to summarize data regarding the different regimens. Keyword-based searches in the MEDLINE, EMBASE, and Cochrane Library databases were conducted until the 1st of January 2021. Our search explored 46 randomized controlled trials involving ten antiplatelet agents, six combinations with aspirin, and four anticoagulant therapies. The review of the literature reflects that antiplatelet therapy improves outcome in patients with ischemic stroke or transient ischemic attack. Monotherapy proved to be an effective and safe choice, especially in patients with a high risk of bleeding. Intensified antiplatelet regimens further improve stroke recurrence; however, bleeding rate increases while mortality remains unaffected. Supplementing the clinical judgment of stroke treatment, assessment of bleeding risk is warranted to identify patients with the highest benefit of treatment intensification.
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Affiliation(s)
| | | | | | | | - András Komócsi
- Department of Interventional Cardiology, Heart Institute, Medical School, University of Pécs, Ifjúság útja 13, 7624 Pécs, Hungary; (D.T.); (A.B.); (P.K.); (O.E.A.E.A.)
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Kalantzi KI, Ntalas IV, Chantzichristos VG, Tsoumani ME, Adamopoulos D, Asimakopoulos C, Bourdakis A, Darmanis P, Dimitriadou A, Gkiokas S, Ipeirotis K, Kitikidou K, Klonaris I, Kostaki A, Logothetis D, Mainas K, Mais T, Maragiannis A, Martiadou K, Mavronasos K, Michelongonas I, Mitropoulos D, Papadimitriou G, Papadopoulos A, Papaioakeim M, Sofillas K, Stabola S, Stefanakis E, Stergiou D, Thoma M, Zenetos A, Zisekas S, Goudevenos JA, Panagiotakos DB, Tselepis AD. Comparison of Triflusal with Aspirin in the Secondary Prevention of Atherothrombotic Events; Α Randomised Clinical Trial. Curr Vasc Pharmacol 2020; 17:635-643. [PMID: 29866011 DOI: 10.2174/1570161116666180605090520] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 04/07/2018] [Accepted: 06/01/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Triflusal has demonstrated an efficacy similar to aspirin in the prevention of vascular events in patients with acute myocardial infarction (ΜΙ) and ischaemic stroke but with less bleeding events. OBJECTIVE We performed a randomised, multicentre, phase 4 clinical trial to compare the clinical efficacy and safety of triflusal versus aspirin, administered for 12 months in patients eligible to receive a cyclooxygenase-1 (COX-1) inhibitor. METHODS Patients with stable coronary artery disease or with a history of non-cardioembolic ischaemic stroke were randomly assigned to receive either triflusal 300 mg twice or 600 mg once daily or aspirin 100 mg once daily for 12 months. The primary efficacy endpoint was the composite of: (a) ΜΙ, (b) stroke (ischaemic or haemorrhagic), or, (c) death from vascular causes for the entire follow-up period. The primary safety endpoints were the rate of bleeding events as defined by Bleeding Academic Research Consortium (BARC) criteria. RESULTS At 12-month follow-up, an equivalent result was revealed between the triflusal (n=559) and aspirin (n=560) in primary efficacy endpoint. Specifically, the combined efficacy outcome rate (i.e. MI, stroke or death from vascular causes) difference was equal to -1.3% (95% confidence interval -1.1 to 3.5) and lied within the a-priori defined equivalence interval (p<0.001). Regarding the primary safety endpoints, patients on triflusal treatment were 50% less likely to develop bleeding events according to the BARC criteria, and especially any clinically overt sign of haemorrhage that requires diagnostic studies, hospitalisation or special treatment (BARC type 2). CONCLUSION The efficacy of triflusal in the secondary prevention of vascular events is similar to aspirin when administered for 12 months. Importantly, triflusal significantly reduced the incidence of ΜΙ and showed a better safety profile compared with aspirin. (ASpirin versus Triflusal for Event Reduction In Atherothrombosis Secondary prevention, ASTERIAS trial; Clinical Trials.gov Identifier: NCT02616497).
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Affiliation(s)
- Kallirroi I Kalantzi
- Department of Cardiology, University Hospital of Ioannina, Ioannina, Greece.,Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Ioannis V Ntalas
- Department of Cardiology, University Hospital of Ioannina, Ioannina, Greece.,Department of Cardiology, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
| | | | - Maria E Tsoumani
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Dimitrios Adamopoulos
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Christos Asimakopoulos
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Adamantios Bourdakis
- Internal Medicine, Diabetes and Metabolism Unit, Trikala General Hospital, Trikala, Greece
| | - Petros Darmanis
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Alexandra Dimitriadou
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Stefanos Gkiokas
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Konstantinos Ipeirotis
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Kyriaki Kitikidou
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Ioannis Klonaris
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Aglaia Kostaki
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Dimitrios Logothetis
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Konstantinos Mainas
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Theodoros Mais
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Athanasios Maragiannis
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Konstantina Martiadou
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Konstantinos Mavronasos
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Ioannis Michelongonas
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Dimitrios Mitropoulos
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Georgios Papadimitriou
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Achilleas Papadopoulos
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | | | - Kosmas Sofillas
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Sotiria Stabola
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Emmanouil Stefanakis
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Dimitrios Stergiou
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Maria Thoma
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Alexandros Zenetos
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - Stergios Zisekas
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
| | - John A Goudevenos
- Department of Cardiology, University Hospital of Ioannina, Ioannina, Greece
| | | | - Alexandros D Tselepis
- Department of Chemistry, Atherothrombosis Research Centre, University of Ioannina, Ioannina, Greece
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Tsai HH, Kim JS, Jouvent E, Gurol ME. Updates on Prevention of Hemorrhagic and Lacunar Strokes. J Stroke 2018; 20:167-179. [PMID: 29886717 PMCID: PMC6007298 DOI: 10.5853/jos.2018.00787] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 05/16/2018] [Accepted: 05/23/2018] [Indexed: 12/22/2022] Open
Abstract
Intracerebral hemorrhage (ICH) and lacunar infarction (LI) are the major acute clinical manifestations of cerebral small vessel diseases (cSVDs). Hypertensive small vessel disease, cerebral amyloid angiopathy, and hereditary causes, such as Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy (CADASIL), constitute the three common cSVD categories. Diagnosing the underlying vascular pathology in these patients is important because the risk and types of recurrent strokes show significant differences. Recent advances in our understanding of the cSVD-related radiological markers have improved our ability to stratify ICH risk in individual patients, which helps guide antithrombotic decisions. There are general good-practice measures for stroke prevention in patients with cSVD, such as optimal blood pressure and glycemic control, while individualized measures tailored for particular patients are often needed. Antithrombotic combinations and anticoagulants should be avoided in cSVD treatment, as they increase the risk of potentially fatal ICH without necessarily lowering LI risk in these patients. Even when indicated for a concurrent pathology, such as nonvalvular atrial fibrillation, nonpharmacological approaches should be considered in the presence of cSVD. More data are emerging regarding the presentation, clinical course, and diagnostic markers of hereditary cSVD, allowing accurate diagnosis, and therefore, guiding management of symptomatic patients. When suspicion for asymptomatic hereditary cSVD exists, the pros and cons of prescribing genetic testing should be discussed in detail in the absence of any curative treatment. Recent data regarding diagnosis, risk stratification, and specific preventive approaches for both sporadic and hereditary cSVDs are discussed in this review article.
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Affiliation(s)
- Hsin-Hsi Tsai
- Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan.,Department of Neurology, National Taiwan University Hospital Bei-Hu Branch, Taipei, Taiwan
| | - Jong S Kim
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Eric Jouvent
- Department of Neurology, University Paris Diderot, Paris, France
| | - M Edip Gurol
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
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Cardona Portela P, Escrig Avellaneda A. [Small vessel cerebrovascular disease]. HIPERTENSION Y RIESGO VASCULAR 2018; 35:185-194. [PMID: 29753656 DOI: 10.1016/j.hipert.2018.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 03/25/2018] [Accepted: 04/11/2018] [Indexed: 11/29/2022]
Abstract
Small vessel vascular disease is a spectrum of different conditions that includes lacunar infarction, alteration of deep white matter, or microbleeds. Hypertension is the main risk factor, although the atherothrombotic lesion may be present, particularly in large-sized lacunar infarctions along with other vascular risk factors. MRI findings are characteristic and the lesions authentic biomarkers that allow differentiating the value of risk factors and defining their prognostic value.
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Affiliation(s)
- P Cardona Portela
- Servicio de Neurología, Hospital Universitario de Bellvitge, L'Hospitalet de Llobregat, España.
| | - A Escrig Avellaneda
- Servicio de Neurología, Parc Sanitari Sant Joan de Deu, Sant Boi de Llobregat, España
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5
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Han SW, Kim YJ, Ahn SH, Seo WK, Yu S, Oh SH, Nam HS, Choi HY, Yoon SS, Kim SH, Lee JY, Lee JH, Hwang YH, Lee KO, Jung YH, Lee J, Sohn SI, Kim YN, Lee KA, Bushnell CD, Lee KY. Effects of Triflusal and Clopidogrel on the Secondary Prevention of Stroke Based on Cytochrome P450 2C19 Genotyping. J Stroke 2017; 19:356-364. [PMID: 29037010 PMCID: PMC5647640 DOI: 10.5853/jos.2017.01249] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 08/17/2017] [Accepted: 08/18/2017] [Indexed: 01/20/2023] Open
Abstract
Background and Purpose To compare the efficacy and safety of antiplatelet agents for the secondary prevention of ischemic stroke based on cytochrome P450 2C19 (CYP2C19) polymorphisms. Methods This study was a prospective, multicenter, randomized, parallel-group, open-label, blind genotype trial. First time non-cardiogenic ischemic stroke patients were enrolled and screened within 30 days. Participants were randomized to receive either triflusal or clopidogrel for secondary stroke prevention. The primary outcome was the time from randomization to first recurrent ischemic stroke or hemorrhagic stroke. Results The required sample size was 1,080 but only 784 (73%) participants were recruited. In patients with a poor CYP2C19 genotype for clopidogrel metabolism (n=484), the risk of recurrent stroke among those who received triflusal treatment was 2.9% per year, which was not significantly different from those who received clopidogrel treatment (2.2% per year; hazard ratio [HR], 1.23; 95% confidence interval [CI], 0.60–2.53). In the clopidogrel treatment group (n=393), 38% had good genotypes and 62% poor genotypes for clopidogrel metabolism. The risk of recurrent stroke in patients with a good CYP2C19 genotype was 1.6% per year, which was not significantly different from those with a poor genotype (2.2% per year; HR, 0.69; 95% CI, 0.26–1.79). Conclusions Whilst there were no significant differences between the treatment groups in the rates of stroke recurrence, major vascular events, or coronary revascularization, the efficacy of antiplatelet agents for the secondary prevention of stroke according to CYP2C19 genotype status remains unclear.
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Affiliation(s)
- Sang Won Han
- Department of Neurology, Inje University College of Medicine, Seoul, Korea
| | - Yong-Jae Kim
- Department of Neurology, Ewha Womans University School of Medicine, Seoul, Korea
| | - Seong Hwan Ahn
- Department of Neurology, Chosun University School of Medicine, Gwangju, Korea
| | - Woo-Keun Seo
- Department of Neurology, Samsung Medical Center, Seoul, Korea
| | - Sungwook Yu
- Department of Neurology, Korea University College of Medicine, Seoul, Korea
| | - Seung-Hun Oh
- Department of Neurology, CHA University College of Medicine, Bundang, Korea
| | - Hyo Suk Nam
- Department of Neurology, Yonsei University College of Medicine, Seoul, Korea
| | - Hye-Yeon Choi
- Department of Neurology, Kyung Hee University School of Medicine, Seoul, Korea
| | - Sung Sang Yoon
- Department of Neurology, Kyung Hee University School of Medicine, Seoul, Korea
| | - Seo Hyun Kim
- Department of Neurology, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Jong Yun Lee
- Department of Neurology, National Medical Center, Seoul, Korea
| | - Jun Hong Lee
- Department of Neurology, National Health Insurance Corporation Ilsan Hospital, Goyang, Korea
| | - Yang-Ha Hwang
- Department of Neurology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Kee Ook Lee
- Department of Neurology, Konyang University College of Medicine, Daejeon, Korea
| | - Yo Han Jung
- Department of Neurology, Changwon Fatima Hospital, Changwon, Korea
| | - Jun Lee
- Department of Neurology, Yeungnam University College of Medicine, Daegu, Korea
| | - Sung-Il Sohn
- Department of Neurology, Keimyung University School of Medicine, Daegu, Korea
| | - Youn Nam Kim
- Clinical Trials Center, Severance Hospital, Yonsei University Health System, Seoul, Korea
| | - Kyung-A Lee
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Cheryl D Bushnell
- Department of Neurology, Wake Forest School of Medicine, Winston Salem, NC, USA
| | - Kyung-Yul Lee
- Department of Neurology, Yonsei University College of Medicine, Seoul, Korea
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Wang W, Zhang L, Liu W, Zhu Q, Lan Q, Zhao J. Antiplatelet Agents for the Secondary Prevention of Ischemic Stroke or Transient Ischemic Attack: A Network Meta-Analysis. J Stroke Cerebrovasc Dis 2016; 25:1081-1089. [DOI: 10.1016/j.jstrokecerebrovasdis.2016.01.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Revised: 01/04/2016] [Accepted: 01/20/2016] [Indexed: 12/01/2022] Open
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Niu PP, Guo ZN, Jin H, Xing YQ, Yang Y. Antiplatelet regimens in the long-term secondary prevention of transient ischaemic attack and ischaemic stroke: an updated network meta-analysis. BMJ Open 2016; 6:e009013. [PMID: 26988347 PMCID: PMC4800132 DOI: 10.1136/bmjopen-2015-009013] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVE To examine the comparative efficacy and safety of different antiplatelet regimens in patients with prior non-cardioembolic ischaemic stroke or transient ischaemic attack. DESIGN Systematic review and network meta-analysis. DATA SOURCES As on 31 March 2015, all randomised controlled trials that investigated the effects of antiplatelet agents in the long-term (≥ 3 months) secondary prevention of non-cardioembolic transient ischaemic attack or ischaemic stroke were searched and identified. OUTCOME MEASURES The primary outcome measure of efficacy was serious vascular events (non-fatal stroke, non-fatal myocardial infarction and vascular death). The outcome measure of safety was any bleeding. RESULTS A total of 36 randomised controlled trials (82,144 patients) were included. Network meta-analysis showed that cilostazol was significantly more effective than clopidogrel (OR 0.77, 95% credible interval 0.60-0.98) and low-dose (75-162 mg daily) aspirin (0.69, 0.55-0.86) in the prevention of serious vascular events. Aspirin (50 mg daily) plus dipyridamole (400 mg daily) and clopidogrel reduced the risk of serious vascular events compared with low-dose aspirin; however, the difference was not statistically significant. Furthermore, low-dose aspirin was as effective as higher daily doses. Cilostazol was associated with a significantly lower bleeding risk than most of the other regimens. Moreover, aspirin plus clopidogrel was associated with significantly more haemorrhagic events than other regimens. Direct comparisons showed similar results as the network meta-analysis. CONCLUSIONS Cilostazol was significantly more effective than aspirin and clopidogrel alone in the long-term prevention of serious vascular events in patients with prior non-cardioembolic ischaemic stroke or transient ischaemic attack. Cilostazol was associated with a significantly lower bleeding risk than low-dose aspirin (75-162 mg daily) and aspirin (50 mg daily) plus dipyridamole (400 mg daily). Low-dose aspirin was as effective as higher daily doses. However, further large, randomised, controlled, head-to-head trials are needed, especially in non-Asian ethnic groups.
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Affiliation(s)
- Peng-Peng Niu
- Department of Neurology, Neuroscience Center, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Zhen-Ni Guo
- Department of Neurology, Neuroscience Center, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Hang Jin
- Department of Neurology, Neuroscience Center, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Ying-Qi Xing
- Department of Neurology, Neuroscience Center, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Yi Yang
- Department of Neurology, Neuroscience Center, The First Hospital of Jilin University, Changchun, Jilin, China
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Comparative Efficacy and Safety of Nine Anti-Platelet Therapies for Patients with Ischemic Stroke or Transient Ischemic Attack: a Mixed Treatment Comparisons. Mol Neurobiol 2016; 54:1456-1466. [PMID: 26846361 DOI: 10.1007/s12035-016-9739-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 01/20/2016] [Indexed: 10/22/2022]
Abstract
Anti-platelet treatments, an effective anti-thrombotic therapy, are widely used in non-cardioembolic ischemic stroke or transient ischemic attack (TIA), including aspirin, cilostazol, clopidogrel, and other mono or dual therapies, while the optimal choice remains uncertain. All the literatures of 38 eligible randomized control trials were searched in PubMed, Embase, and China National Knowledge Internet (CNKI) without language limitation. And, nine anti-platelet therapies were assessed, including aspirin, clopidogrel, cilostazol, ticlopidine, triflusal, terutroban, sarpogrelate, dipyridamole plus aspirin, and clopidogrel plus aspirin. Additionally, we extract data of composite vascular events, major bleeding, ischemic stroke, intracranial hemorrhage, and all-cause death, as indicators of efficacy and safety. And among them, composite vascular events were the primary outcome. The binary outcomes were expressed as odds ratios (ORs) with corresponding 95 % confidence intervals (CIs). Both traditional meta-analysis and network meta-analysis were performed. Besides, for each outcome, the rank order was applied to reflect the superiority of every therapy compared with others, using the surface under the cumulative ranking curve (SUCRA). A cluster analysis was also conducted. Through the network meta-analysis, the synthesized data shows that cilostazol performed best on composite vascular events compared with placebo (OR = 0.62, 95 % CI 0.46-0.83) and aspirin (OR = 0.71, 95 % CI 0.53-0.95). In terms of ischemic stroke, clopidogrel plus aspirin seems the optimal, and it has significant difference between placebo (OR = 0.53, 95 % CI 0.35-0.74) and aspirin (OR = 0.75, 95 % CI 0.61-0.95). Meanwhile, cilostazol is also the first rank in major bleeding, especially when it is in contrast to aspirin (OR = 0.13, 95 % CI 0.02-0.70) and clopidogrel plus aspirin (OR = 0.09, 95 % CI 0.01-0.50). There is no significant difference among these nine treatments and placebo, as to all-cause death and intracranial hemorrhage. According to the cluster analysis, cilostazol can be the best choice with comprehensive assessment of composite vascular events, ischemic stroke and major bleeding. Based on this network meta-analysis, cilostazol was recommended as the optimal choice with good performance in both efficacy and safety for patient with ischemic stroke or TIA among nine anti-platelet therapies.
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9
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Adamek T. Controversies in antiplatelet therapy in the secondary prevention of stroke. Eur Geriatr Med 2016. [DOI: 10.1016/j.eurger.2015.12.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Han SW, Kim YJ, Ahn SH, Seo WK, Yu S, Oh SH, Kim YN, Lee KY. Protocol for the comparison of triflusal and clopidogrel in secondary prevention of stroke based on cytochrome P450 2C19 genotyping (MASETRO study): A multicenter, randomized, open-label, parallel-group trial. Int J Stroke 2016; 11:485-91. [PMID: 26763917 DOI: 10.1177/1747493015620804] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 11/08/2015] [Indexed: 01/29/2023]
Abstract
RATIONALE AND AIM The antiplatelet effect of clopidogrel is reportedly influenced by cytochrome P450 2C19 (CYP2C19) polymorphisms. However, there is no data concerning the relationship between stroke recurrence and CYP2C19 polymorphisms in patients treated with clopidogrel for secondary prevention of ischemic stroke. Triflusal may be an alternative therapy for clopidogrel in patients with poor genotype. The Comparison of Triflusal and Clopidogrel Effects in Secondary Prevention of Stroke Based on Cytochrome P450 2C19 Genotyping (MAESTRO) study will investigate the effect of antiplatelet agents based on CYP2C19 polymorphisms in secondary prevention of ischemic stroke. SAMPLE SIZE AND DESIGN Assuming that 55% of patients belong to the poor genotype group, the required sample size is 1080 patients with at least 24 months of follow-up. This study is designed as a prospective, multicenter, randomized, parallel-group, open-label, and blind genotype trial. Patients who experience their first non-cardiogenic ischemic stroke within 30 days prior to screening are eligible. Patients received 300 mg triflusal twice a day or 75 mg clopidogrel once daily during the trial. The study is registered with ClinicalTrials.gov (NCT01174693). STUDY OUTCOME The primary outcome is recurrent ischemic stroke or hemorrhagic stroke. Secondary outcomes consist of composite major vascular events including stroke, myocardial infarction, coronary revascularization, or vascular death. DISCUSSION Personalized medicine may be essential for patients according to individual drug metabolism abilities. MAESTRO is the first prospective study designed to evaluate the effect of CYP2C19 polymorphism in secondary stroke prevention and will resolve several questions regarding preventive antiplatelet agents for recurrent stroke.
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Affiliation(s)
- Sang Won Han
- Department of Neurology, Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - Yong-Jae Kim
- Department of Neurology, Ewha Womans University School of Medicine, Seoul, Korea
| | - Seong Hwan Ahn
- Department of Neurology, Chosun University School of Medicine, Gwangju, Korea
| | - Woo-Keun Seo
- Departments of Neurology, College of Medicine, Korea University, Seoul, Korea
| | - Sungwook Yu
- Departments of Neurology, College of Medicine, Korea University, Seoul, Korea
| | - Seung-Hun Oh
- Department of Neurology, CHA University College of Medicine, Bundang, Korea
| | - Youn Nam Kim
- Clinical Trials Center, Severance Hospital, Yonsei University Health System, Seoul, Korea
| | - Kyung-Yul Lee
- Department of Neurology, Yonsei University College of Medicine, Seoul, Korea
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11
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Xie W, Zheng F, Zhong B, Song X. Long-Term Antiplatelet Mono- and Dual Therapies After Ischemic Stroke or Transient Ischemic Attack: Network Meta-Analysis. J Am Heart Assoc 2015; 4:e002259. [PMID: 26304937 PMCID: PMC4599476 DOI: 10.1161/jaha.115.002259] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Accepted: 07/27/2015] [Indexed: 11/16/2022]
Abstract
BACKGROUND The latest guidelines do not make clear recommendations on the selection of antiplatelet therapies for long-term secondary prevention of stroke. We aimed to integrate the available evidence to create hierarchies of the comparative efficacy and safety of long-term antiplatelet therapies after ischemic stroke or transient ischemic attack. METHODS AND RESULTS We performed a network meta-analysis of randomized controlled trials to compare 11 antiplatelet therapies in patients with ischemic stroke or transient ischemic attack. In December 2014, we searched Medline, Embase, and the Cochrane Library database for trials. The search identified 24 randomized controlled trials including a total of 85 667 patients with antiplatelet treatments for at least 1 year. Cilostazol significantly reduced stroke recurrence in comparison with aspirin (odds ratio 0.66, 95% credible interval 0.44 to 0.92) and dipyridamole (odds ratio 0.57, 95% credible interval 0.34 to 0.95), respectively. Cilostazol also significantly reduced intracranial hemorrhage compared with aspirin, clopidogrel, terutroban, ticlopidine, aspirin plus clopidogrel, and aspirin plus dipyridamole. Aspirin plus clopidogrel could not significantly reduce stroke recurrence compared with monotherapies but caused significantly more major bleeding than all monotherapies except terutroban. The pooled estimates did not change materially in the sensitivity analyses of the primary efficacy outcome. CONCLUSIONS Long-term monotherapy was a better choice than long-term dual therapy, and cilostazol had the best risk-benefit profile for long-term secondary prevention after stroke or transient ischemic attack. More randomized controlled trials in non-East Asian patients are needed to determine whether long-term use of cilostazol is the best option for the prevention of recurrent stroke.
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Affiliation(s)
- Wuxiang Xie
- Department of Epidemiology, Beijing Anzhen Hospital, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Capital Medical UniversityBeijing, China
| | - Fanfan Zheng
- Brainnetome Center, Institute of Automation, Chinese Academy of SciencesBeijing, China
| | - Baoliang Zhong
- Department of Psychiatry, University of Rochester Medical CenterNew York, NY
| | - Xiaoyu Song
- Department of Biostatistics, Columbia UniversityNew York, NY
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Mok V, Kim JS. Prevention and Management of Cerebral Small Vessel Disease. J Stroke 2015; 17:111-22. [PMID: 26060798 PMCID: PMC4460330 DOI: 10.5853/jos.2015.17.2.111] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2015] [Revised: 04/07/2015] [Accepted: 04/07/2015] [Indexed: 01/22/2023] Open
Abstract
Lacunar infarcts/lacunes, white matter hyperintensities (WMH), and cerebral microbleeds (CMBs) are considered various manifestations of cerebral small vessel disease (SVD). Since the exact mechanisms of these manifestations differ, their associated risk factors differ. High blood pressure is the most consistent risk factor for all of these manifestations. However, a "J curve" phenomenon in terms of blood pressure probably exists for WMH. The association between cholesterol levels and lacunar infarcts/lacunes or WMH was less consistent and sometimes conflicting; a low cholesterol level probably increases the risk of CMBs. Homocysteinemia appears to be associated with WMH. It is noteworthy that the risk factors profile may also differ between different lacunar patterns and CMBs located at different parts of the brain. Thrombolysis, antihypertensives, and statins are used to treat patients with symptomatic lacunar infarction, just as in those with other stroke subtypes. However, it should be remembered that bleeding risks increase in patients with extensive WMH and CMBs after thrombolysis therapy. According to the Secondary Prevention of Small Subcortical Strokes trial results, a blood pressure reduction to <130 mmHg is recommended in patients with symptomatic lacunar infarction. However, an excessive blood pressure decrease may induce cognitive decline in older patients with extensive WMH. Dual antiplatelet therapy (aspirin plus clopidogrel) should be avoided because of the excessive risk of intracerebral hemorrhage. Although no particular antiplatelet is recommended, drugs such as cilostazol or triflusal may have advantages for patients with SVD since they are associated with less frequent bleeding complications than aspirin.
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Affiliation(s)
- Vincent Mok
- Division of Neurology, Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Jong S Kim
- Stroke Center and Department of Neurology, University of Ulsan, Asan Medical Center, Seoul, Korea
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Kernan WN, Ovbiagele B, Black HR, Bravata DM, Chimowitz MI, Ezekowitz MD, Fang MC, Fisher M, Furie KL, Heck DV, Johnston SCC, Kasner SE, Kittner SJ, Mitchell PH, Rich MW, Richardson D, Schwamm LH, Wilson JA. Guidelines for the prevention of stroke in patients with stroke and transient ischemic attack: a guideline for healthcare professionals from the American Heart Association/American Stroke Association. Stroke 2014; 45:2160-236. [PMID: 24788967 DOI: 10.1161/str.0000000000000024] [Citation(s) in RCA: 2839] [Impact Index Per Article: 283.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The aim of this updated guideline is to provide comprehensive and timely evidence-based recommendations on the prevention of future stroke among survivors of ischemic stroke or transient ischemic attack. The guideline is addressed to all clinicians who manage secondary prevention for these patients. Evidence-based recommendations are provided for control of risk factors, intervention for vascular obstruction, antithrombotic therapy for cardioembolism, and antiplatelet therapy for noncardioembolic stroke. Recommendations are also provided for the prevention of recurrent stroke in a variety of specific circumstances, including aortic arch atherosclerosis, arterial dissection, patent foramen ovale, hyperhomocysteinemia, hypercoagulable states, antiphospholipid antibody syndrome, sickle cell disease, cerebral venous sinus thrombosis, and pregnancy. Special sections address use of antithrombotic and anticoagulation therapy after an intracranial hemorrhage and implementation of guidelines.
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Culebras A, Messé SR, Chaturvedi S, Kase CS, Gronseth G. Summary of evidence-based guideline update: prevention of stroke in nonvalvular atrial fibrillation: report of the Guideline Development Subcommittee of the American Academy of Neurology. Neurology 2014; 82:716-24. [PMID: 24566225 DOI: 10.1212/wnl.0000000000000145] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To update the 1998 American Academy of Neurology practice parameter on stroke prevention in nonvalvular atrial fibrillation (NVAF). How often do various technologies identify previously undetected NVAF? Which therapies reduce ischemic stroke risk with the least risk of hemorrhage, including intracranial hemorrhage? The complete guideline on which this summary is based is available as an online data supplement to this article. METHODS Systematic literature review; modified Delphi process recommendation formulation. MAJOR CONCLUSIONS In patients with recent cryptogenic stroke, cardiac rhythm monitoring probably detects occult NVAF. In patients with NVAF, dabigatran, rivaroxaban, and apixaban are probably at least as effective as warfarin in preventing stroke and have a lower risk of intracranial hemorrhage. Triflusal plus acenocoumarol is likely more effective than acenocoumarol alone in reducing stroke risk. Clopidogrel plus aspirin is probably less effective than warfarin in preventing stroke and has a lower risk of intracranial bleeding. Clopidogrel plus aspirin as compared with aspirin alone probably reduces stroke risk but increases the risk of major hemorrhage. Apixaban is likely more effective than aspirin for decreasing stroke risk and has a bleeding risk similar to that of aspirin. MAJOR RECOMMENDATIONS Clinicians might obtain outpatient cardiac rhythm studies in patients with cryptogenic stroke to identify patients with occult NVAF (Level C) and should routinely offer anticoagulation to patients with NVAF and a history of TIA/stroke (Level B). Specific patient considerations will inform anticoagulant selection in patients with NVAF judged to need anticoagulation.
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Affiliation(s)
- Antonio Culebras
- From the Department of Neurology (A.C.), SUNY Upstate Medical University, Syracuse, NY; the Department of Stroke and Neurocritical Care (S.R.M.), Hospital of the University of Pennsylvania and the Pennsylvania Hospital, Philadelphia; the Stroke Program (S.C.), Wayne State University School of Medicine, Detroit, MI; the Department of Neurology (C.S.K.), Boston University School of Medicine and Boston Medical Center, Boston, MA; and the Department of Neurology (G.G.), University of Kansas Medical Center, Kansas City, KS
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Fuentes B, Gállego J, Gil-Nuñez A, Morales A, Purroy F, Roquer J, Segura T, Tejada J, Lago A, Díez-Tejedor E, Alonso de Leciñana M, Álvarez-Sabin J, Arenillas J, Calleja S, Casado I, Castellanos M, Castillo J, Dávalos A, Díaz-Otero F, Egido J, López-Fernández J, Freijo M, García Pastor A, Gilo F, Irimia P, Maestre J, Masjuan J, Martí-Fábregas J, Martínez-Sánchez P, Martínez-Vila E, Molina C, Nombela F, Ribó M, Rodríguez-Yañez M, Rubio F, Serena J, Simal P, Vivancos J. Guía para el tratamiento preventivo del ictus isquémico y AIT (II). Recomendaciones según subtipo etiológico. Neurologia 2014; 29:168-83. [DOI: 10.1016/j.nrl.2011.06.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2011] [Accepted: 06/29/2011] [Indexed: 11/28/2022] Open
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17
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Guidelines for the preventive treatment of ischaemic stroke and TIA (II). Recommendations according to aetiological sub-type. NEUROLOGÍA (ENGLISH EDITION) 2014. [DOI: 10.1016/j.nrleng.2011.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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18
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Alvarez-Sabín J, Quintana M, Santamarina E, Maisterra O. Triflusal and Aspirin in the Secondary Prevention of Atherothrombotic Ischemic Stroke: A Very Long-Term Follow-Up. Cerebrovasc Dis 2014; 37:181-7. [DOI: 10.1159/000357662] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Accepted: 12/02/2013] [Indexed: 11/19/2022] Open
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19
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Cho HJ, Kang TH. Pharmacological Secondary Prevention of Ischemic Stroke. BRAIN & NEUROREHABILITATION 2014. [DOI: 10.12786/bn.2014.7.2.76] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Han-Jin Cho
- Department of Neurology, Pusan National University School of Medicine, Korea
| | - Tae-Ho Kang
- Department of Neurology, Pusan National University School of Medicine, Korea
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20
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Lukasik M, Owecki MK. Efficacy of Antiplatelet Treatment in Stroke Prevention: Past, Present, and Future. Drug Dev Res 2013. [DOI: 10.1002/ddr.21100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Maria Lukasik
- Department of Neurology; Poznan University of Medical Sciences; Poznan; Poland
| | - Michal K. Owecki
- Department of Neurology; Poznan University of Medical Sciences; Poznan; Poland
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21
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Malloy RJ, Kanaan AO, Silva MA, Donovan JL. Evaluation of Antiplatelet Agents for Secondary Prevention of Stroke Using Mixed Treatment Comparison Meta-analysis. Clin Ther 2013; 35:1490-1500.e7. [DOI: 10.1016/j.clinthera.2013.09.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Revised: 08/20/2013] [Accepted: 09/06/2013] [Indexed: 10/26/2022]
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22
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Latib A, Ielasi A, Ferri L, Chieffo A, Godino C, Carlino M, Montorfano M, Colombo A. Aspirin intolerance and the need for dual antiplatelet therapy after stent implantation: A proposed alternative regimen. Int J Cardiol 2013; 165:444-7. [DOI: 10.1016/j.ijcard.2011.08.080] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2011] [Revised: 06/09/2011] [Accepted: 08/23/2011] [Indexed: 11/27/2022]
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23
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Borja J, Doménech A, García-Rafanell J. Pharmacological therapies and major gastrointestinal bleeding in patients with atrial fibrillation. Int J Clin Pract 2013; 67:488. [PMID: 23445436 DOI: 10.1111/j.1742-1241.2012.02976.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Caso V, Santalucia P, Acciarresi M, Pezzella FR, Paciaroni M. Antiplatelet treatment in primary and secondary stroke prevention in women. Eur J Intern Med 2012; 23:580-5. [PMID: 22939800 DOI: 10.1016/j.ejim.2012.04.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Revised: 04/05/2012] [Accepted: 04/16/2012] [Indexed: 10/28/2022]
Abstract
Stroke is a leading cause of death worldwide and the first cause of disability in the Western world. Over the last 20 years, antiplatelet agents have reduced overall stroke rates in primary and secondary prevention in men. However, this has not been the case for women. In this narrative review, the most widely used antiplatelet therapies for primary and secondary prevention in stroke, excluding cardioembolic stroke, will be outlined. First, the largest randomised controlled trials will be analysed as well as the enrolment percentages of women. Second, analyses on sex-interaction effects in each study will be examined. Moreover, the Authors will discuss the need to develop targeted antiplatelet therapies specifically for women. Based on current results, the most randomised clinical trials and meta-analyses on antiplatelet agents in cerebrovascular disease have not performed sub-analyses on sex-related differences and this is mainly because women were underrepresented. Despite this, antiplatelet agents are considered to be equally effective for both sexes in primary and secondary stroke prevention. Finally, aspirin is the most widely studied antiplatelet in women and has been shown to provide greater benefit for women as primary prevention of ischemic stroke without a significant increased risk in haemorrhage.
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Affiliation(s)
- Valeria Caso
- Stroke Unit and Division of Cardiovascular Medicine, University of Perugia, Santa Maria della Misericordia Hospital, Sant'Andrea delle Fratte, Perugia, Italy
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25
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Kral M, Herzig R, Sanak D, Skoloudik D, Vlachova I, Bartkova A, Hlustik P, Kovacik M, Kanovsky P. Oral antiplatelet therapy in stroke prevention. Minireview. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub 2011; 154:203-10. [PMID: 21048805 DOI: 10.5507/bp.2010.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Antiplatelet therapy plays a crucial role in the primary and secondary prevention of noncardioembolic ischemic stroke / transient ischemic attacks (IS/TIA). Several antiplatelet agents are available. This review deals with the characteristics of particular antiplatelet agents as well as choice of antiplatelet treatment in various situations, based on the evidence and international recommendations. METHODS PubMed and Stroke Trials Registry on-line databases and the European Stroke Organisation Guidelines for Management of IS/TIA 2008 and update of the recommendations of the American Heart Association / American Stroke Association Council 2008 on Stroke were used. RESULTS Acetylsalicylic acid (ASA) is the only antiplatelet drug used in primary prevention, mainly to reduce the risk of myocardial infarction (MI), but also in women aged 45 years or more and in some patients with non-valvular atrial fibrillation to reduce risk of IS/TIA. In the secondary prevention of noncardioembolic IS/TIA, ASA in combination with long release dipyridamole (DIP) and clopidogrel (CLOP) alone are considered first choice therapies. The choice of the particular antiplatelet agent should be individualized according to the patient risk factor profiles and treatment tolerance. ASA alone or triflusal can be used alternatively in patients who cannot be treated with either ASA+DIP or CLOP. The use of indobufen should be considered only in patients in need of temporary interruption of the antiplatelet therapy. Ticlopidine (TIC) should not be newly introduced into the treatment. Currently, insufficient data are available on the use of cilostazol in IS/TIA prevention.
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Affiliation(s)
- Michal Kral
- Stroke Center, Department of Neurology, Palacky University and University Hospital, Olomouc, Czech Republic.
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Antonijoan RM, Gich I, Azaro A, Sainz S, Balanzó J, Izquierdo I, Borja J, Donado E, Blanch I, Barbanoj MJ. Gastrointestinal safety of triflusal solution in healthy volunteers: a proof of concept endoscopic study. Eur J Clin Pharmacol 2011; 67:663-9. [DOI: 10.1007/s00228-011-1004-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2010] [Accepted: 01/21/2011] [Indexed: 11/28/2022]
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Inzitari D, Piccardi B, Sarti C. A critical review of aspirin in the secondary prevention of noncardioembolic ischaemic stroke. Int J Stroke 2010; 5:306-18. [PMID: 20636714 DOI: 10.1111/j.1747-4949.2010.00443.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Both secondary prevention (such as lifestyle modifications, pharmacotherapy or surgery) and an understanding of the influence of risk factors (including the different aetiologic mechanisms of cerebral ischaemia) play a pivotal role in reducing the burden of recurrent stroke. Regarding the types of preventative treatments available, variations exist across all clinical studies, including differences in target populations (including the type of cerebral ischaemia), risk factors, length of follow-up, drop-out rates and outcomes, which makes translating the results of clinical trials to individual patients difficult. However, with such limitations in mind, this critical albeit nonsystematic review, which compared aspirin with other antiplatelets and in combination with other drugs, showed that the benefit from aspirin treatment is consistently shown in ischaemic stroke, while harms are limited. Furthermore, no definite superiority is apparent across different antiplatelet therapies. Dual antiplatelet regimens may expose to a slight but measurable higher risk of haemorrhagic complications, perhaps in selective groups of patients (i.e. those with severe small-vessel disease or in selective racial groups). Based on our analysis, the indication of aspirin as the first-line choice, also recommended by several acknowledged international or national guidelines, may be confirmed. However, the complex nature of patients at risk of recurrent ischaemic stroke necessitates a comprehensive approach, which should be driven by the primary care physician, whose role is central to successful actions for secondary stroke prevention.
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Affiliation(s)
- Domenico Inzitari
- Department of Neurological and Psychiatric Sciences, University of Florence, Firenze, Italy.
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28
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Furie KL, Kasner SE, Adams RJ, Albers GW, Bush RL, Fagan SC, Halperin JL, Johnston SC, Katzan I, Kernan WN, Mitchell PH, Ovbiagele B, Palesch YY, Sacco RL, Schwamm LH, Wassertheil-Smoller S, Turan TN, Wentworth D. Guidelines for the prevention of stroke in patients with stroke or transient ischemic attack: a guideline for healthcare professionals from the american heart association/american stroke association. Stroke 2010; 42:227-76. [PMID: 20966421 DOI: 10.1161/str.0b013e3181f7d043] [Citation(s) in RCA: 1266] [Impact Index Per Article: 90.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The aim of this updated statement is to provide comprehensive and timely evidence-based recommendations on the prevention of ischemic stroke among survivors of ischemic stroke or transient ischemic attack. Evidence-based recommendations are included for the control of risk factors, interventional approaches for atherosclerotic disease, antithrombotic treatments for cardioembolism, and the use of antiplatelet agents for noncardioembolic stroke. Further recommendations are provided for the prevention of recurrent stroke in a variety of other specific circumstances, including arterial dissections; patent foramen ovale; hyperhomocysteinemia; hypercoagulable states; sickle cell disease; cerebral venous sinus thrombosis; stroke among women, particularly with regard to pregnancy and the use of postmenopausal hormones; the use of anticoagulation after cerebral hemorrhage; and special approaches to the implementation of guidelines and their use in high-risk populations.
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Badruddin A, Gorelick PB. Antiplatelet therapy for prevention of recurrent stroke. Curr Treat Options Neurol 2009; 11:452-9. [DOI: 10.1007/s11940-009-0049-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Montero Domínguez M, González B, Zimmer J. Neuroprotective effects of the anti-inflammatory compound triflusal on ischemia-like neurodegeneration in mouse hippocampal slice cultures occur independent of microglia. Exp Neurol 2009; 218:11-23. [DOI: 10.1016/j.expneurol.2009.03.023] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2008] [Revised: 03/16/2009] [Accepted: 03/18/2009] [Indexed: 01/04/2023]
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31
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Estudio epidemiológico observacional para evaluar el manejo de los trastornos gastrointestinales en el paciente con tratamiento antiagregante. ANGIOLOGIA 2009. [DOI: 10.1016/s0003-3170(09)14002-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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32
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Suh JW, Kim SY, Park JS, Kim YS, Kang HJ, Koo BK, Kim HS. Comparison of Triple Antiplatelet Therapy Including Triflusal and Conventional Dual Therapy in Patients Who Underwent Drug-Eluting Stent Implantation. Int Heart J 2009; 50:701-9. [PMID: 19952467 DOI: 10.1536/ihj.50.701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Jung-Won Suh
- Department of Internal Medicine, Seoul National University College of Medicine, Cardiovascular Center, Seoul National University Hospital, Chongno-gu, Seoul, Korea
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Hankey GJ. Costs and health care system issues. HANDBOOK OF CLINICAL NEUROLOGY 2009; 92:373-388. [PMID: 18790285 DOI: 10.1016/s0072-9752(08)01919-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- Graeme J Hankey
- Stroke Unit, Department of Neurology, Royal Perth Hospital and School of Medicine and Pharmacology, University of Western Australia, Perth, Australia.
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Duran X, Sánchez S, Vilahur G, Badimon L. Protective effects of triflusal on secondary thrombus growth and vascular cyclooxygenase-2. J Thromb Haemost 2008; 6:1385-92. [PMID: 18503633 DOI: 10.1111/j.1538-7836.2008.03036.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Carotid residual mural thrombus predisposes to recurrent thrombosis and/or distal embolization (i.e. cerebrovascular ischemia). OBJECTIVES Our aims were (i) to analyze and compare the efficacy of aspirin, triflusal, and its main metabolite 2-hydroxy-4-trifluorometylbenzoic acid (HTB) on secondary thrombus growth; and (ii) evaluate to what extent the three Cox-1 inhibitors influenced vascular Cox-1/Cox-2 expression and endothelial prostacyclin synthesis. METHODS In a rabbit model of ex vivo thrombosis, a fresh mural thrombus was formed on damaged vessels at flow conditions typical of mild and severe carotid stenoses. The effects of Cox-1 inhibitors administered both intravenously (i.v.) (aspirin 5 mg kg(-1), triflusal 10 mg kg(-1), and HTB 10 mg kg(-1)) and orally (p.o.) (8 days; aspirin 30 mg kg(-1) day(-1), and triflusal 40 mg kg(-1) day(-1)) on secondary thrombus growth were assessed by In-(111)deposited platelets and compared with a placebo control. Arterial Cox-1/Cox-2 expression after 8-day treatment was evaluated at mRNA and protein levels. Additionally, a drug-related dose-dependent in vitro assay was performed for endothelial PGI(2) release measurement (Cox-2 activity). RESULTS All Cox inhibitors similarly and significantly (P < 0.05) reduced secondary thrombus formation after i.v. and p.o. administration versus placebo control. Treatments exerted no effect on vascular Cox-1 mRNA whereas Cox-2 mRNA was moderately reduced by aspirin and triflusal (placebo 100% +/- 9%, aspirin 70% +/- 2% and triflusal 70% +/- 2%; P < 0.05). Cox-2 protein levels were slightly higher in the triflusal versus aspirin group (placebo 100% +/- 6%, aspirin 35% +/- 10% and triflusal 61% +/- 9%; P < 0.005 versus placebo). Interestingly, in vitro, HTB solely maintained endothelial PGI(2) synthesis levels similar to the control. CONCLUSIONS At a similar level of efficacy in inhibiting secondary thrombosis, triflusal seems to better preserve Cox-2 expression than aspirin and its metabolite HTB was able to protect endothelial prostacyclin production.
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Affiliation(s)
- X Duran
- Cardiovascular Research Center, CSIC-ICCC, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
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35
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Salem DN, O'Gara PT, Madias C, Pauker SG. Valvular and Structural Heart Disease. Chest 2008; 133:593S-629S. [DOI: 10.1378/chest.08-0724] [Citation(s) in RCA: 191] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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O’Donnell MJ, Hankey GJ, Eikelboom JW. Antiplatelet Therapy for Secondary Prevention of Noncardioembolic Ischemic Stroke. Stroke 2008; 39:1638-46. [DOI: 10.1161/strokeaha.107.497271] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Martin J. O’Donnell
- From McMaster University (M.J.O., J.W.E.), Hamilton, ON, Canada; and the School of Medicine and Pharmacology (G.J.H.), University of Western Australia, Perth, Australia
| | - Graeme J. Hankey
- From McMaster University (M.J.O., J.W.E.), Hamilton, ON, Canada; and the School of Medicine and Pharmacology (G.J.H.), University of Western Australia, Perth, Australia
| | - John W. Eikelboom
- From McMaster University (M.J.O., J.W.E.), Hamilton, ON, Canada; and the School of Medicine and Pharmacology (G.J.H.), University of Western Australia, Perth, Australia
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Xiang YZ, Xia Y, Gao XM, Shang HC, Kang LY, Zhang BL. Platelet Activation, and Antiplatelet Targets and Agents. Drugs 2008; 68:1647-64. [DOI: 10.2165/00003495-200868120-00004] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Borja J, Izquierdo I, García-Rafanell J. Prevention of Stroke in Patients With Ischemic Stroke or Transient Ischemic Attack. Stroke 2006; 37:2653; author reply 2654. [PMID: 16973925 DOI: 10.1161/01.str.0000244549.87017.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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McQuaid KR, Laine L. Systematic review and meta-analysis of adverse events of low-dose aspirin and clopidogrel in randomized controlled trials. Am J Med 2006; 119:624-38. [PMID: 16887404 DOI: 10.1016/j.amjmed.2005.10.039] [Citation(s) in RCA: 249] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2005] [Revised: 10/20/2005] [Accepted: 10/22/2005] [Indexed: 12/11/2022]
Abstract
PURPOSE We performed a systematic review to define the relative and absolute risk of clinically relevant adverse events with the antiplatelet agents, aspirin and clopidogrel. MATERIALS AND METHODS Databases were searched for randomized controlled trials of low-dose aspirin (75-325 mg/day) or clopidogrel administered for cardiovascular prophylaxis. Relative risks (RR) were determined by meta-analysis of 22 trials for aspirin versus placebo and from single studies for aspirin versus clopidogrel, aspirin versus aspirin/clopidogrel, and clopidogrel versus aspirin/clopidogrel. Absolute risk increase was calculated by multiplying RR increase by the pooled weighted incidence of the control. RESULTS Aspirin increased the risk of major bleeding (RR=1.71; 95% confidence interval [CI], 1.41-2.08), major gastrointestinal (GI) bleeding (RR=2.07; 95% CI, 1.61-2.66), and intracranial bleeding (RR=1.65; 95% CI, 1.06-5.99) versus placebo. No difference between 75-162.5 mg/day and >162.5-325 mg/day aspirin versus placebo was seen. The absolute annual increases attributable to aspirin were major bleeding: 0.13% (95% CI, 0.08-0.20); major GI bleeding: 0.12% (95% CI, 0.07-0.19), intracranial bleeding: 0.03% (95% CI, 0.01-0.08). No study compared clopidogrel with placebo. One study showed increased major GI bleeding (but not non-GI bleeding endpoints) with aspirin versus clopidogrel (RR=1.45; 95% CI, 1.00-2.10). The absolute annual increase was 0.12% (95% CI, 0.00-0.28). CONCLUSIONS Low-dose aspirin increases the risk of major bleeding by approximately 70%, but the absolute increase is modest: 769 patients (95% CI, 500-1250) need to be treated with aspirin to cause one additional major bleeding episode annually. Compared with clopidogrel, aspirin increases the risk of GI bleeding but not other bleeding; however, 883 patients (95% CI, 357-infinity) would need to be treated with clopidogrel versus aspirin to prevent one major GI bleeding episode annually at a cost of over 1 million dollars.
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Abstract
Triflusal is a derivative of salicylic acid with a well-established platelet aggregation inhibitory profile. Its pharmacokinetic and pharmacodynamic properties differ, however, somewhat from those of acetylsalicylic acid. A number of recent experimental and clinical studies have shown that triflusal is a potentially useful choice in the treatment and prophylaxis of brain ischemia because of its antithrombogenic as well as neuroprotective effects. Its antithrombogenic effect has been demonstrated at the clinical as well as at the experimental level, while its neuroprotective effect has been shown only in experimental models. The drug interferes with thrombogenesis by inhibiting thromboxane synthesis and increasing the levels of cAMP and nitric oxide. Its neuroprotective action is the result of its antioxidant and antiinflammatory effects in brain tissue. From a clinical standpoint triflusal is similar in efficacy to acetylsalicylic acid in preventing stroke, but has less adverse effects, especially it is less likely to cause bleeding. Because of its pharmacodynamic properties and lower rate of adverse reactions, triflusal may be a useful alternative to acetylsalicylic acid in the prevention of stroke.
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Abstract
Triflusal (Aflen, Disgren, Tecnosal, Triflux) is a novel platelet antiaggregant with structural similarities to salicylates, but which is not derived from aspirin. It has similar efficacy to aspirin in patients with cerebral or myocardial infarction, but has a reduced risk of haemorrhagic complications. In addition, triflusal plus moderate-intensity anticoagulation has demonstrated efficacy when used as thromboprophylaxis in atrial fibrillation. As such, triflusal has a role in the primary prevention of cerebrovascular events in atrial fibrillation, and for the secondary prevention of cerebral and myocardial infarction, primarily as an alternative to aspirin in patients for whom aspirin is unsuitable.
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Bousser MG. [Antithrombotic drugs in the prevention of ischemic stroke]. JOURNAL DES MALADIES VASCULAIRES 2005; 30:267-79. [PMID: 16439939 DOI: 10.1016/s0398-0499(05)83843-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Stroke prevention cannot be dissociated from cardiovascular prevention in general. It is based on the correction of vascular risk factors, particularly hypertension and tobacco smoking, and on antithrombotic drugs which tackle the thrombo-embolic process which is the immediate cause of the ischemic event. Ischemic strokes exhibit considerable etiopathogenic diversity, the underlying cause modifying thrombus composition. In atherothrombotic brain infarction, platelets play a major role and antiplatelet drugs have a benefit/risk ratio better than that of oral anticoagulants, with a 25% reduction in the combined risk of ischemic stroke, myocardial infarction and vascular death. Antiplatelet drugs are also used in small artery diseases of the brain although the role of thrombosis is unknown and no specific trial has been devoted to this variety of cerebrovascular disease. In emboligenic cardiac diseases, atrial fibrillation in particular, stasis of the dilated left atrium favors coagulation phenomena, hence the much better efficacy of oral anticoagulants (presently vitamin K antagonists) both in primary and secondary prevention with a 70% risk reduction in cerebral infarction, compared with only 20% for aspirin. The expected benefit of antithrombotic drugs must be weighed against their inherent hemorrhagic risk, which is greatest for oral anticoagulants, slightly less for association of antiplatelet drugs and even less for each antiplatelet drug given alone. The use of antithrombotic drugs allows a targeted prevention of cerebral infarction. It is based on a triple case by case evaluation: that of the cause and of the risk it carries, that of the benefit expected from antithrombotic drugs, and that of their inherent hemorrhagic risk.
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Affiliation(s)
- M G Bousser
- Service de Neurologie, Hôpital Lariboisière, 2 rue Ambroise Paré, 75010 Paris.
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Touzé E, Varenne O, Chatellier G, Peyrard S, Rothwell PM, Mas JL. Risk of Myocardial Infarction and Vascular Death After Transient Ischemic Attack and Ischemic Stroke. Stroke 2005; 36:2748-55. [PMID: 16254218 DOI: 10.1161/01.str.0000190118.02275.33] [Citation(s) in RCA: 259] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background—
Whether stroke patients should be investigated for asymptomatic coronary artery disease remains matter of debate. Absolute risks of myocardial infarction (MI) and vascular death after a stroke have not been accurately assessed. We performed a systematic review and a meta-analysis to determine the risk of MI and nonstroke vascular death after transient ischemic attack (TIA) and ischemic stroke. Cohort studies of TIA or ischemic stroke patients were included if they were published between 1980 and March 2005, reported risk of MI and nonstroke vascular death, enrolled >100 patients, and had at least 1 year of follow-up. We included 39 studies in a total of 65 996 patients with mean follow-up of 3.5 years. Two reviewers independently carried out data extraction using a standardized form. Absolute annual risks were estimated through weighted meta-regressions with a random effect. To test the predictions of expected event rates derived from our analysis, we used individual patient data.
Summary of Review—
The annual risks were 2.1% (CI 95%: 1.9 to 2.4) for nonstroke vascular death, 2.2% (1.7 to 2.7) for total MI, 0.9% (0.7 to 1.2) for nonfatal MI and 1.1% (0.8 to 1.5) for fatal MI. The time course of risk was linear. Estimated risks fitted well with observed risks at the individual level. There was no heterogeneity in the absolute risks according to baseline study characteristics.
Conclusions—
Patients with TIA or stroke have a relatively high risk of MI and nonstroke vascular death. Additional research is needed to identify the determinants of coronary artery disease in stroke patients.
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Affiliation(s)
- Emmanuel Touzé
- Department of Neurology, Hôpital Sainte-Anne, Université Paris-Descartes, Faculté de Médecine, Paris Cedex 14.
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Costa J, Ferro JM, Matias-Guiu J, Alvarez-Sabin J, Torres F. Triflusal for preventing serious vascular events in people at high risk. Cochrane Database Syst Rev 2005:CD004296. [PMID: 16034926 DOI: 10.1002/14651858.cd004296.pub2] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
BACKGROUND Aspirin is the standard treatment for secondary prevention of stroke and other vascular events. Several studies suggest that triflusal may have a better safety profile. OBJECTIVES To determine in people at high risk of vascular events whether triflusal is an effective and safe treatment for primary and secondary prevention of serious vascular events. SEARCH STRATEGY We searched the trials registers of the following Cochrane Review Groups: Stroke Group (last searched October 2004), Heart Group, Peripheral Vascular Diseases Group and Metabolic and Endocrine Disorders Group (last searched May 2003). In addition, we searched the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library Issue 2, 2003), MEDLINE (1977 to 2003) and EMBASE (1980 to 2003). We searched reference lists and contacted researchers in the field, authors of relevant trials and the drug manufacturer. SELECTION CRITERIA Randomised and quasi-randomised studies comparing triflusal with placebo or aspirin in people at high risk of vascular events. DATA COLLECTION AND ANALYSIS Two authors independently assessed trial quality and extracted data. The primary outcome was a serious vascular event (non-fatal acute myocardial infarction (AMI), non-fatal ischemic or hemorrhagic stroke, or vascular death). Other efficacy and safety measures collected were frequency of different vascular events, adverse events, minor and major hemorrhages. MAIN RESULTS (1) Aspirin versus triflusal: five studies enrolled patients with stroke or transient ischemic attack (TIA) (4 trials; 2944 patients; followed for 6 to 47 months) or AMI (one trial; 2275 patients; followed for 35 days). Entry criteria were similar within each subgroup of patients. Patient groups were appropriately selected and well matched. The primary outcome in all trials was a composite outcome of vascular events. Trials had no important bias except in one study (217 patients). For the primary outcome of a serious vascular event there was no significant difference between triflusal and aspirin; the odds ratio (OR) was 1.04 (95% confidence interval (CI) 0.87 to 1.23). Significant differences were found for frequency of hemorrhages, both minor (OR 1.60, 95% CI 1.31 to 1.95) and major (OR 2.34, 95% CI 1.58 to 3.46) and for non-hemorrhagic gastrointestinal adverse events (OR 0.84, 95% CI 0.75 to 0.95). Sensitivity analysis of well versus poorly allocated trials showed no significant differences. (2) Triflusal versus placebo: two trials enrolled patients with unstable angina (281 patients) or peripheral arteriopathy (122 patients), who were followed for 6 months. Triflusal was associated with a reduction in serious vascular events (OR 2.29, 95% CI 1.01 to 5.19; OR greater than 1 favours triflusal) and with a higher frequency of adverse events (OR 1.68, 95% CI 1.00 to 2.80). AUTHORS' CONCLUSIONS No significant differences were found between triflusal and aspirin for secondary prevention of serious vascular events in patients with stroke or TIA and AMI. However, our review cannot exclude moderate differences in efficacy. Triflusal was associated with a lower risk of hemorrhagic complications.
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Affiliation(s)
- J Costa
- Laboratório de Farmacologia Clínica e Terapêutica, Faculdade de Medicina Lisboa, Av. Prof. Egas Moniz, Lisboa, Portugal, 1649-028.
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Abstract
Randomized clinical stroke trials published during 2004 dealt primarily with prevention of strokes by reducing risk factors. The usefulness of innovative versions of widely known treatment modalities was documented. These included angiotensin-converting enzyme inhibitors against hypertension, acarabose against diabetes, and the antiplatelet agent triflusal instead of aspirin. A large British study confirmed the value of treatment with simvastatin. Appropriately powered studies found no benefit for stroke prevention of either vitamin treatment to lower homocysteine or hormonal replacement in post-menopausal women. The circumstances under which antithrombotic, anticoagulant and surgical treatments of acute ischemic stroke are appropriate were further specified.
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Affiliation(s)
- Meheroz H Rabadi
- Burke Rehabilitation Hospital and Medical Research Institute, Weill Medical College of Cornell University, 785 Mamaroneck Avenue, White Plains, NY 10605, USA.
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Hankey GJ. Is clopidogrel the antiplatelet drug of choice for high-risk patients with stroke/TIA?: No. J Thromb Haemost 2005; 3:1137-40. [PMID: 15946198 DOI: 10.1111/j.1538-7836.2005.01439.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- G J Hankey
- Stroke Unit, Royal Perth Hospital, Perth, Australia.
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Valle M, Barbanoj MJ, Donner A, Izquierdo I, Herranz U, Klein N, Eichler HG, Müller M, Brunner M. Access of HTB, main metabolite of triflusal, to cerebrospinal fluid in healthy volunteers. Eur J Clin Pharmacol 2005; 61:103-11. [PMID: 15711832 DOI: 10.1007/s00228-004-0887-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2004] [Accepted: 12/18/2004] [Indexed: 10/25/2022]
Abstract
OBJECTIVE Triflusal has been shown to exert neuroprotective effects by downregulating molecules considered responsible for the development of Alzheimer's disease (AD). The aim of this study was to develop a population pharmacokinetic model to characterize plasma and cerebrospinal fluid (CSF) pharmacokinetics of the main active metabolite of triflusal-HTB (2-hydroxy-4-trifluoro-methylbenzoic acid)-in healthy volunteers. METHODS Data from two studies were combined. Study A: subjects received single oral doses of triflusal 900 mg. Triflusal and HTB plasma concentrations were extensively measured. Study B: triflusal 600 mg once daily was administered orally for 14 days. HTB plasma and CSF concentrations were determined in healthy volunteers. Population pharmacokinetic modeling was performed using NONMEM. RESULTS A one-compartmental model with rapid first-order absorption for triflusal and first-order formation of HTB best described plasma concentrations. Triflusal elimination rate constant was 50 times faster than that estimated for the metabolite. CSF concentrations of HTB ranged between 0.011 microg/ml and 0.341 microg/ml. A CSF-plasma partition coefficient of 0.002 and a k(e0) value of 0.059 h(-1) were estimated by means of population modeling. CONCLUSION In the present study in healthy volunteers, HTB penetrated into the CSF in a range of concentrations experimentally proven to have protective effects in AD. These concentrations suggest that triflusal could be used in the treatment of central nervous system diseases in doses similar to those used in cardiovascular diseases. Access to the CSF compartment was characterized by a slow equilibrium rate constant and a low CSF-plasma partition coefficient.
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Affiliation(s)
- M Valle
- Centre d'Investigació de Medicaments, Institut de Recerca del HSCSP, Hospital de la Santa Creu i Sant Pau and Departamento de Farmacología y Terapéutica de la Universidad Autónoma de Barcelona, Spain.
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Falk RH. Reconsidering combined antiplatelet and anticoagulant therapy in atrial fibrillation**Editorials published in the Journal of the American College of Cardiologyreflect the views of the authors and do not necessarily represent the views of JACCor the American College of Cardiology. J Am Coll Cardiol 2004; 44:1567-9. [PMID: 15489086 DOI: 10.1016/j.jacc.2004.07.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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