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Specialty: Hematology
Condition: Heart Attack

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Total 519 results found since Jan 2013.

Prior chronic clopidogrel therapy is associated with increased adverse events and early stent thrombosis.
Abstract Despite the growing use of clopidogrel, limited data exist regarding the prognostic significance of chronic clopidogrel therapy in patients sustaining acute coronary syndrome (ACS). Our aim was to determine whether patients sustaining ACS while on chronic clopidogrel therapy have a worse prognosis than clopidogrel-naïve patients. A total of 5,386 consecutive ACS patients were prospectively characterised and followed-up for 30 days. Of them, 680 (13 %) were treated with clopidogrel prior to the index ACS. Major adverse cardiovascular events (MACE) were defined as death, recurrent ACS, stroke and/or sten...
Source: Thrombosis and Haemostasis - October 8, 2015 Category: Hematology Authors: Asher E, Fefer P, Sabbag A, Herscovici R, Regev E, Mazin I, Shlomo N, Zahger D, Atar S, Hammerman H, Polak A, Beigel R, Matetzky S, PLATIS (Platelets and Thrombosis in Sheba) Study Group Tags: Thromb Haemost Source Type: research

An optimum prophylactic dose of prasugrel monotherapy may safely and effectively prevent the development of experimental thrombotic strokes
Myocardial infarction and stroke are two of the leading causes of death and disability worldwide [1,2]. Using a combination of aspirin and a platelet P2Y12 antagonist, several large clinical trials have definitively demonstrated the efficacy of dual antiplatelet therapies in preventing myocardial infarction, stroke or death in patients with acute coronary syndromes [3–8]. Dual antiplatelet therapy with aspirin and a thienopyridine-based P2Y12 antagonist (clopidogrel or prasugrel) has now become the standard of care of patients with acute coronary syndromes.
Source: Thrombosis Research - October 16, 2015 Category: Hematology Authors: Frederick A. Ofosu Source Type: research

Regulation of VWF expression, and secretion in health and disease
Purpose of review: Von Willebrand factor (VWF) is a large multidomain, multimeric glycoprotein that plays an essential role in regulating the balance between blood clotting and bleeding. Aberrant VWF regulation can lead to a spectrum of diseases extending from bleeding disorders [Von Willebrand disease (VWD)] to aberrant thrombotic thrombocytopenic purpura (TTP). Understanding the biology of VWF expression and secretion is essential for developing novel targeted therapies for VWF-related hemostasis disorders. Recent findings: A number of recent elegant in-vitro and in-vivo studies will be highlighted, including the discov...
Source: Current Opinion in Hematology - April 9, 2016 Category: Hematology Tags: VASCULAR BIOLOGY: Edited by Edward F. Plow Source Type: research

Prognostic risk-stratified score for predicting mortality in hospitalized patients with thrombotic thrombocytopenic purpura: nationally representative data from 2007 to 2012.
CONCLUSIONS: Early and targeted therapy for high-risk individuals should be used to guide management of TTP patients for improved survival outcomes. PMID: 27079482 [PubMed - as supplied by publisher]
Source: Transfusion - April 14, 2016 Category: Hematology Authors: Goel R, King KE, Takemoto CM, Ness PM, Tobian AA Tags: Transfusion Source Type: research

Risk of solid cancer, cardiovascular disease, anaphylaxis, osteoporosis and fractures in patients with systemic mastocytosis: A nationwide population‐based study
This article is protected by copyright. All rights reserved.
Source: American Journal of Hematology - July 17, 2016 Category: Hematology Authors: Sigurd Broesby‐Olsen, Dóra Körmendiné Farkas, Hanne Vestergaard, Anne Pernille Hermann, Michael Boe Møller, Charlotte Gotthard Mortz, Thomas Kielsgaard Kristensen, Carsten Bindslev‐Jensen, Henrik Toft Sørensen, Henrik Frederiksen Tags: Research Article Source Type: research

Dabigatran in real-world atrial fibrillation. Meta-analysis of observational comparison studies with vitamin K antagonists.
Abstract In the RE-LY clinical trial, dabigatran presented a better effectiveness/safety profile when compared to warfarin. However, clinical trials are not very representative of the real-world setting. We aimed to assess the performance of dabigatran in real-world patients with atrial fibrillation (AF) by means of a systematic review and meta-analysis of observational comparison studies with vitamin K antagonists (VKA). We searched PubMed, Embase and Scopus databases until November 2015 and selected studies according to the following criteria: observational study performed with nonvalvular AF patients; reporting...
Source: Thrombosis and Haemostasis - July 27, 2016 Category: Hematology Authors: Carmo J, Moscoso Costa F, Ferreira J, Mendes M Tags: Thromb Haemost Source Type: research

Characterization of the Anticoagulant and Antithrombotic Properties of the Sphingosine 1-Phosphate Mimetic FTY720
Sphingosine 1-phosphate (S1P) is a highly active lysophospholipid implicated in various cardiocerebrovascular events such as coagulation, myocardial infarction and stroke. However, as the functional S1P receptor antagonist, whether the S1P mimetic FTY720 can modulate coagulation and/or thrombotic formation remains largely unknown. We investigated the effects of FTY720 on adenosine diphosphate (ADP)-induced platelet aggregation, coagulation parameters and thrombus formation in rats. Pretreatment with FTY720 (2.5 mg/kg) inhibited platelet aggregation induced by ADP, elongated the thrombin time and decreased the fibrinogen le...
Source: Acta Haematologica - November 1, 2016 Category: Hematology Source Type: research

Characterization of the Anticoagulant and Antithrombotic Properties of the Sphingosine 1-Phosphate Mimetic FTY720.
Abstract Sphingosine 1-phosphate (S1P) is a highly active lysophospholipid implicated in various cardiocerebrovascular events such as coagulation, myocardial infarction and stroke. However, as the functional S1P receptor antagonist, whether the S1P mimetic FTY720 can modulate coagulation and/or thrombotic formation remains largely unknown. We investigated the effects of FTY720 on adenosine diphosphate (ADP)-induced platelet aggregation, coagulation parameters and thrombus formation in rats. Pretreatment with FTY720 (2.5 mg/kg) inhibited platelet aggregation induced by ADP, elongated the thrombin time and decreased...
Source: Acta Haematologica - November 1, 2016 Category: Hematology Authors: Zhao Z, Wang R, Huo Z, Li C, Wang Z Tags: Acta Haematol Source Type: research

Study on COgnition and Prognosis in the Elderly (SCOPE): Design and Objectives.
Authors: Hansson L Abstract Hypertension is a major risk factor for cardiovascular events, including stroke, as well as for white matter lesions of the brain. There is also evidence to link cognitive impairment and dementia to hypertension. However, it has not been established whether antihypertensive treatment of elderly patients with a diastolic blood pressure (DBP) in the range 90-99 mmHg provides protection against major cardiovascular events and cognitive impairment. The Study on COgnition and Prognosis in the Elderly (SCOPE) is the first study designed to assess the effects of antihypertensive drug treatment ...
Source: Blood Pressure - April 23, 2017 Category: Hematology Tags: Blood Press Source Type: research

Results of the STOP-Hypertension-2 Trial.
Authors: Hansson L Abstract The second Swedish Trial in Old patients with Hypertension (STOP-Hypertension-2) was conducted to compare the effects of 'newer( antihypertensive therapies (angiotensin converting enzyme [ACE] inhibitors and calcium antagonists) and established therapies (beta-blockers and diuretics) on cardiovascular mortality and morbidity in elderly hypertensive patients. A total of 6614 patients were randomized to receive conventional treatment, ACE inhibitors or calcium antagonists, and followed for a mean of 5 years. The primary endpoint was a combination of fatal stroke, fatal myocardial infarctio...
Source: Blood Pressure - April 23, 2017 Category: Hematology Tags: Blood Press Source Type: research

Single versus dual anti-platelet therapy post transcatheter aortic valve implantation: a meta-analysis of randomized controlled trials
In conclusion, SAPT provided similar safety without adding incremental efficacy compared to DAPT but showed tendency of lower combined endpoints of 30-day mortality, life-threatening and major bleeding.
Source: Journal of Thrombosis and Thrombolysis - September 13, 2017 Category: Hematology Source Type: research

Platelet reactivity-adjusted antiplatelet therapy in patients with percutaneous coronary intervention: a meta-analysis of randomized controlled trials.
Authors: Xing Z, Tang L, Zhu Z, Huang J, Peng X, Hu X Abstract Numerous number of evidences show that high on-treatment platelet reactivity is a well-known risk factor for adverse events in patients after percutaneous coronary intervention (PCI). Controversial situations still exist regarding the effectiveness of tailoring antiplatelet therapy according to platelet function monitoring. The PubMed, Embase, and Cochrane Central databases were searched for randomized trials comparing platelet reactivity-adjusted antiplatelet therapy with conventional antiplatelet therapy in patients undergoing PCI. The primary end poi...
Source: Platelets - September 14, 2017 Category: Hematology Tags: Platelets Source Type: research

Clinical utility of remote platelet function measurement using P-selectin: assessment of aspirin, clopidogrel, and prasugrel and bleeding disorders.
Authors: Bath PM, May J, Heptinstall S Abstract Vascular diseases such as myocardial infarction and ischemic stroke are associated with increased platelet function whilst the risk of recurrence is reduced by antiplatelet agents such as aspirin, clopidogrel, and prasugrel. However, some patients exhibit high platelet reactivity, especially with clopidogrel. Existing platelet function tests may not be ideal in that they can be expensive, are often time consuming, and measurements must be made near to the patient and within a few hours of blood collection. Platelet activation leads to translocation of P-selectin from ...
Source: Platelets - April 20, 2018 Category: Hematology Tags: Platelets Source Type: research

Genetic determinants of activity and antigen levels of contact system factors.
CONCLUSION: This study adds to current knowledge of how genetic variation influences contact system protein levels and clarifies interdependencies. This article is protected by copyright. All rights reserved. PMID: 30288888 [PubMed - as supplied by publisher]
Source: Thrombosis and Haemostasis - October 4, 2018 Category: Hematology Authors: Rohmann JL, de Haan HG, Algra A, Vossen CY, Rosendaal FR, Siegerink B Tags: J Thromb Haemost Source Type: research

The Clinical Significance of Fibrin Monomers.
CONCLUSION:  Utilizing FM concentrations to assess hyper-coagulable patients seems promising; however, there are limitations including variations in FM cut-off values, the effect of patient medications and the timing of FM measurement relative to an acute event. Thus, further investigation is required before a true advantage for FM as a haemostatic marker can be established. PMID: 30312978 [PubMed - as supplied by publisher]
Source: Thrombosis and Haemostasis - October 12, 2018 Category: Hematology Authors: Refaai MA, Riley P, Mardovina T, Bell PD Tags: Thromb Haemost Source Type: research