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Specialty: Hematology

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Total 2753 results found since Jan 2013.

ADAMTS13-mediated thrombolysis of t-PA-resistant occlusions in ischemic stroke in mice
Rapid vascular recanalization forms the basis for successful treatment of cerebral ischemia. Currently, tissue plasminogen activator (t-PA) is the only approved thrombolytic drug for ischemic stroke. However, t-PA does not always result in efficient thrombus dissolution and subsequent blood vessel recanalization. To better understand thrombus composition, we analyzed thrombi retrieved from ischemic stroke patients and found a distinct presence of von Willebrand factor (VWF) in various samples. Thrombi contained on average 20.3% ± 10.1% VWF, and this was inversely correlated with thrombus red blood cell content. We h...
Source: Blood - May 11, 2016 Category: Hematology Authors: Denorme, F., Langhauser, F., Desender, L., Vandenbulcke, A., Rottensteiner, H., Plaimauer, B., Francois, O., Andersson, T., Deckmyn, H., Scheiflinger, F., Kleinschnitz, C., Vanhoorelbeke, K., De Meyer, S. F. Tags: Thrombosis and Hemostasis Source Type: research

Mean platelet volume is related with ischemic stroke in patients with sinus rhythm
Stroke is the leading cause of disability worldwide. It is known that atrial fibrillation and left atrial enlargement contribute ischemic stroke, and mean platelet volume (MPV) increases in patients with ischemic stroke and atrial fibrillation. We aimed to determine whether higher MPV is associated with ischemic stroke in patients with sinus rhythm. We evaluated 74 patients in sinus rhythm and with ischemic stroke (Group 1) and 90 age-matched and sex-matched healthy individuals as control group (Group 2). After physical and echocardiographic examination, 24–48 h Holter monitoring and complete blood counts were studied....
Source: Blood Coagulation and Fibrinolysis - July 1, 2016 Category: Hematology Tags: Original Articles Source Type: research

α2-Antiplasmin: New Insights and Opportunities for Ischemic Stroke
Semin Thromb HemostDOI: 10.1055/s-0036-1585077Thrombotic vascular occlusion is the leading cause of ischemic stroke. High blood levels of α2-antiplasmin (a2AP), an ultrafast, covalent inhibitor of plasmin, have been linked in humans to increased risk of ischemic stroke and failure of tissue plasminogen activator (tPA) therapy. Consistent with these observations, a2AP neutralizes the therapeutic benefit of tPA therapy in experimental stroke. In addition, a2AP has deleterious, dose-related effects on ischemic brain injury in the absence of therapy. Experimental therapeutic inactivation of a2AP markedly reduces microvascular...
Source: Seminars in Thrombosis and Hemostasis - July 28, 2016 Category: Hematology Authors: Reed, Guy L. Houng, Aiilyan K. Singh, Satish Wang, Dong Tags: Review Article Source Type: research

Association of frequent genetic variants in platelet activation pathway genes with large-vessel ischemic stroke in Polish population.
In conclusion, the results of the study demonstrate statistically significant differences in two frequent intronic genetic variants (in RGS7 and ANKS1B) that could be associated with the platelet function between ischemic stroke patients with coexisting large-vessel atherosclerosis and control patients having high vascular risk. PMID: 27533483 [PubMed - as supplied by publisher]
Source: Platelets - August 19, 2016 Category: Hematology Tags: Platelets Source Type: research

The influence of immunoglobulin class G from blood plasma of patients with stroke on the activity of some parameters of hemostasis system
Today, cardiovascular diseases are one of the main causes of disability of the population. Most of the illnesses, including stroke, are accompanied by the appearance immunoglobulin G (IgG) in the blood circulation. According to the literature sources and previous experiments, it is known that IgG made influence on the hemostasis system. Objectives of the investigation are pure enzymes: thrombin, factor X, proenzyme of protein C and prothrombin under the influence of IgG fraction that were separated from the plasma of patients with atherothrombotic and cardioembolic ischemic stroke and patients with other neurological disea...
Source: Blood Coagulation and Fibrinolysis - October 29, 2016 Category: Hematology Tags: Original Articles Source Type: research

Brachial-ankle PWV for predicting clinical outcomes in patients with acute stroke.
CONCLUSION: High baPWV was a strong prognostic value of vascular death in patients with acute stroke. PMID: 28142262 [PubMed - as supplied by publisher]
Source: Blood Pressure - February 2, 2017 Category: Hematology Tags: Blood Press Source Type: research

The risk of stroke among acutely ill hospitalized medical patients: lessons from recent trials on extended-duration thromboprophylaxis.
Authors: Marszalek J, Mehrsefat S, Chi G Abstract Data from recent randomized controlled trials indicate that the incidence of stroke among acutely ill medical patients is unexpectedly high and approximates 1% at 90 days. Preliminary data suggest that betrixaban may reduce ischemic stroke in patients without atrial fibrillation. There is an unmet demand for stroke risk stratification schemes targeting hospitalized medical patients. The prognostic value of biomarkers such as natriuretic peptides and D-dimer in predicting short-term stroke remains uncertain. Future research should focus on identifying the high-risk s...
Source: Expert Review of Hematology - June 16, 2017 Category: Hematology Tags: Expert Rev Hematol Source Type: research

Endovascular Stroke Therapy
Semin Thromb Hemost DOI: 10.1055/s-0037-1603984Acute ischemic stroke therapy has rapidly evolved over the past two decades. Recently, a paradigm shift has occurred in the treatment of acute ischemic stroke due to large vessel occlusion with the publication of several randomized trials proving that mechanical thrombectomy with stent retriever devices improves clinical outcome in comparison to intravenous thrombolysis. Furthermore, pooled data from the clinical trials suggest that mechanical thrombectomy can improve outcome in a broad range of patients, and that the sooner the intervention can be performed, the greater the b...
Source: Seminars in Thrombosis and Hemostasis - July 27, 2017 Category: Hematology Authors: Caganap, Scott D. Smith, Wade S. Tags: Review Article Source Type: research

Middle Cerebral Artery Velocities Are Inversely Related to Hemoglobin Levels and Acutely Drop in Response to RBC Transfusion: Implications for Stroke Screening in SCD
DiscussionThese data show a striking relationship between anemia and TCD velocity, and that RBC transfusion can alter MCA velocity. Even an 11% increase in hemoglobin such as that seen in the low-responder in Figure 3 could change a patient classification from high-risk to conditional TCD. These data also show the significant sensitivity of MCA velocity to the depth of measurement (Figure 2 & 3). The investigators in the STOP study went to extreme ends to standardize these measurements. Nonetheless, TCD measures may not be done with such rigor in clinical settings. It is clear that standard TCD screening has been of tr...
Source: Blood - November 21, 2018 Category: Hematology Authors: Perumbeti, A., Carreras, O., Detterich, J. A., Shah, P., Sunwoo, J., Khoo, M., Wood, J. C., Coates, T. D. Tags: 114. Hemoglobinopathies, Excluding Thalassemia-Clinical: Poster II Source Type: research

Recurrent Stroke: The Role of Thrombophilia in a Large International Pediatric Stroke Population
CONCLUSIONS:Identifying children at increased for recurrent AIS events is important in intensifying preventative measures. Among 894 Canadian, English and German pediatric stroke patients, 17.9% experienced recurrent AIS at a median of 3.1 months after the index stroke. The presence of more than one prothrombotic risk factor is associated with AIS recurrence in childrenDisclosuresNo relevant conflicts of interest to declare.
Source: Blood - November 21, 2018 Category: Hematology Authors: Deveber, G., Kirkham, F. J., Shannon, K., Brandao, L. R., Strater, R., Kenet, G., Clausnizer, H., Moharir, M., Kausch, M., Askalan, R., MacGregor, D., Stoll, M., Torge, A., Dlamini, N., Ganesan, V., Prengler, M., Singh, J., Nowak Goettl, U. Tags: 331. Pathophysiology of Thrombosis: Poster III Source Type: research

The relationship between the prognosis of children with acute arterial stroke and polymorphisms of CDKN2B, HDAC9, NINJ2, NAA25 genes
AbstractIschemic stroke is a significant health condition, whose frequency in childhood is increasing day by day. Although many factors are effective in development of the stroke, it has been showed that individuals having risk factors have a genetic predisposition. The aim of the study is to determine whether distinct genetic mutations are risk factors for children with history of ischemic stroke. Our sample data is taken from 58 patients (29 male and 29 female) who applied our hospital between 2012 and 2016 with diagnosis of acute or chronic arterial stroke and from 70 healthy children (32 male and 38 female) with simila...
Source: Journal of Thrombosis and Thrombolysis - January 17, 2019 Category: Hematology Source Type: research

Incidence, Risk factors, and Biomarkers Predicting Ischemic or Hemorrhagic Stroke Associated Acute Kidney Injury and Outcome: A Retrospective Study in a General Intensive Care Unit
Conclusions: Among stroke patients in ICU, we identified significant risk factors of stroke-associated AKI. Serum CysC level at ICU admission was an important biomarker for predicting AKI and 28-day mortality.Blood Purif
Source: Blood Purification - March 20, 2019 Category: Hematology Source Type: research

Genetic modulators of fetal hemoglobin expression and ischemic stroke occurrence in African descendant children with sickle cell anemia
This study aimed to investigate the influence of genetic variants on the levels of fetal hemoglobin (Hb F) and biochemical parameters related with chronic hemolysis, as well as on ischemic stroke risk, in ninety-one unrelated SCA patients, children of sub-Saharan progenitors. Our results show that a higher Hb F level has an inverse relationship with the occurrence of stroke, since the group of patients who suffered stroke presents a significantly lower mean Hb F level (5.34  ± 4.57% versus 9.36 ± 6.48%;p = 0.024). Furthermore, the co-inheritance of alpha-thalassemia improves the chronic hemolytic pattern, evid...
Source: Annals of Hematology - September 1, 2019 Category: Hematology Source Type: research

Reduced ADAMTS13 activity during TTP remission is associated with stroke in TTP survivors
In conclusion, stroke is common after recovery from TTP and is associated with reduced ADAMTS13 activity during remission.
Source: Blood - September 25, 2019 Category: Hematology Authors: Upreti, H., Kasmani, J., Dane, K., Braunstein, E. M., Streiff, M. B., Shanbhag, S., Moliterno, A. R., Sperati, C. J., Gottesman, R. F., Brodsky, R. A., Kickler, T. S., Chaturvedi, S. Tags: Thrombosis and Hemostasis, Clinical Trials and Observations Source Type: research

Modified diffusion-weighted imaging-Alberta Stroke Program Early Computed Tomography Score including deep white matter lesions predicts symptomatic intracerebral hemorrhage following intravenous thrombolysis
AbstractThe Alberta Stroke Program Early Computed Tomography Score (ASPECTS) is widely used for the assessment of early ischemic changes (EICs) before thrombolysis. However, for symptomatic intracerebral hemorrhage (sICH) following intravenous recombinant tissue plasminogen activator (rt-PA), the prediction abilities of CT-ASPECTS, diffusion-weighted imaging (DWI)-ASPECTS, and DWI-ASPECTS including EICs in deep white matter (DWI-ASPECTS  + W) are unclear. We investigated associations between each score and sICH following intravenous rt-PA. Data from consecutive patients who received intravenous rt-PA for acute ischemic...
Source: Journal of Thrombosis and Thrombolysis - November 18, 2019 Category: Hematology Source Type: research