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Total 139 results found since Jan 2013.
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
Activated protein C ameliorates chronic graft-versus-host disease by PAR1-dependent biased cell signaling on T cells
Soluble thrombomodulin plasma concentrations are elevated in steroid-resistant graft-versus-host disease (GVHD), implying endothelial hypofunctioning for thrombomodulin-dependent generation of activated protein C’s (APC) anticoagulant, anti-inflammatory, and antiapoptotic functions. Recombinant thrombomodulin or APC administration decreases acute GVHD, manifested by intense inflammation and tissue destruction. Here, we administered recombinant murine wild-type (WT) APC to mice with established chronic GVHD (cGVHD), a less-inflammatory autoimmune-like disease. WT APC normalized bronchiolitis obliterans–induced p...
Source: Blood - August 28, 2019 Category: Hematology Authors: Sinha, R. K., Flynn, R., Zaiken, M., Paz, K., Gavin, A. L., Nemazee, D., Fernandez, J. A., Xu, X., Griffin, J. H., Blazar, B. R. Tags: Transplantation, Brief Reports Source Type: research
A genome-wide association study identifies new loci for factor VII and implicates factor VII in ischemic stroke etiology
Factor VII (FVII) is an important component of the coagulation cascade. Few genetic loci regulating FVII activity and/or levels have been discovered to date. We conducted a meta-analysis of 9 genome-wide association studies of plasma FVII levels (7 FVII activity and 2 FVII antigen) among 27 495 participants of European and African ancestry. Each study performed ancestry-specific association analyses. Inverse variance weighted meta-analysis was performed within each ancestry group and then combined for a trans-ancestry meta-analysis. Our primary analysis included the 7 studies that measured FVII activity, and a secondary an...
Source: Blood - February 28, 2019 Category: Hematology Authors: de Vries, P. S., Sabater-Lleal, M., Huffman, J. E., Marten, J., Song, C., Pankratz, N., Bartz, T. M., de Haan, H. G., Delgado, G. E., Eicher, J. D., Martinez-Perez, A., Ward-Caviness, C. K., Brody, J. A., Chen, M.-H., de Maat, M. P. M., Franberg, M., Gill Tags: Thrombosis and Hemostasis Source Type: research
Arterial thromboembolic events preceding the diagnosis of cancer in older persons
In conclusion, the risk of arterial thromboembolic events begins to increase 150 days before the date of cancer diagnosis in older persons and peaks in the 30 days before.
Source: Blood - February 21, 2019 Category: Hematology Authors: Navi, B. B., Reiner, A. S., Kamel, H., Iadecola, C., Okin, P. M., Tagawa, S. T., Panageas, K. S., DeAngelis, L. M. Tags: Plenary Papers, Free Research Articles, Thrombosis and Hemostasis, Clinical Trials and Observations Source Type: research
The Incidence of Thromboembolism for Lenalidomide Versus Thalidomide in Older Patients with Newly Diagnosed Multiple Myeloma
Conclusion: In this propensity score weighted study of older patients with newly diagnosed MM, the cumulative incidences of VTE and ATE were similarly high in both lenalidomide- and thalidomide-treatment groups. The lack of difference in overall survival should be interpreted with caution as residual confounding such as severity of disease could influence this outcome. Our results suggest that appropriate risk stratification and vigilant thromboprophylaxis remain essential for MM patients receiving all types of immunomodulatory drugs.DisclosuresGarcia: Retham Technologies LLC: Consultancy; Shingoi: Consultancy; Portola: Re...
Source: Blood - November 21, 2018 Category: Hematology Authors: Li, A., Wu, Q. V., Warnick, G., Libby, E. N., Garcia, D. A., Lyman, G. H. Tags: 901. Health Services Research-Non-Malignant Conditions: Thrombosis and Anticoagulation Source Type: research
Burden of Hospital Readmissions for Venous Thromboembolism Among Patients with Cancer
Conclusions: In this real-world study, many patients hospitalized for cancer experienced a VTE event requiring re-hospitalization, which was the highest proportion of readmitted patients among acute medical illnesses analyzed in this study, with almost 30% readmitted within 30 days of post-discharge. Total costs of readmissions were substantial, as high as $41K for resubmissions due to primary diagnosis of DVT/PE. Improvement in VTE prophylaxis for patients with cancer may reduce the risk and frequency of VTE, and thus hospital readmissions, reducing the clinical and economic burden of VTE in this patient population.Sponso...
Source: Blood - November 21, 2018 Category: Hematology Authors: Amin, A. J., Deitelzweig, S., Lin, J., Lingohr-Smith, M., Menges, B., Neuman, W. R. Tags: 901. Health Services Research-Non-Malignant Conditions: Thrombosis and Anticoagulation Source Type: research
Genotype-Phenotype Correlation in Congenital TTP: New Insights from a Multicentre Study with 121 Patients
Conclusion: At present, the Hereditary TTP Registry is the largest cohort on cTTP, to our knowledge. The large number of different mutations as well as confounding factors, including multi-ethnic and geographical factors in our internationally compiled patient cohort make unravelling the genotype-phenotype correlation in cTTP challenging. Yet, for c.4143_4144dupA, we can conclude that homozygous patients with ADAMTS13 c.4143_4144dupA are clinically less severely affected than compound heterozygotes due to the later onset of the disease in homozygotes, whereas the clinical characteristics are similar between compound hetero...
Source: Blood - November 21, 2018 Category: Hematology Authors: Van Dorland, A. A., Mansouri Taleghani, M., Friedman, K. D., George, J., Hrachovinova, I., Knobl, P., Lammle, B., Matsumoto, M., von Krogh, A. S., Schneppenheim, R., Aebi-Huber, I., Lukas, B., Cermakova, Z., Quist-Paulsen, P., Terrell, D., Vesely, S. K., Tags: 311. Disorders of Platelet Number or Function: Advances in the Treatment of TTP and HIT Source Type: research
NOAC Therapy Is Also Effective and Safe in Patients Older Than 80 Years -- Results of the Prospective Dresden NOAC Registry (NCT01588119)
Conclusions: During long-term FU of more than 2.5 years, this very old population of NOAC recipients demonstrated low rates of cardiovascular or major bleeding complications during active NOAC therapy. Approximately one quarter of the study population died during follow-up, with cardiovascular events being the leading cause of death. Only 11 fatal bleeding events were observed; however, most of the 58 fatal thromboembolic events occurred after anticoagulation was discontinued. This indicates that continued anticoagulation with NOACs may result in a beneficial risk-benefit ratio also in very old patients.DisclosuresBeyer-We...
Source: Blood - November 21, 2018 Category: Hematology Authors: Beyer-Westendorf, J., Tittl, L., Naue, C., Marten, S. Tags: 332. Antithrombotic Therapy: Management of Challenging Patients and Scenarios Source Type: research
Efficacy and Safety of Direct Oral Factor Xa Inhibitors in 795 Morbidly Obese Patients
Conclusions: Our study is the largest study examining morbidly obese patients on DOACS and provides further evidence of comparable efficacy and safety of the direct oral anti-Xa inhibitors, compared to warfarin, in morbidly obese patients with AF and VTE.DisclosuresKushnir: Janssen: Research Funding. Billett: Bayer: Consultancy; Janssen: Research Funding.
Source: Blood - November 21, 2018 Category: Hematology Authors: Kushnir, M., Choi, Y., Eisenberg, R., Rao, D., Tolu, S., Gao, J., Mowrey, W., Billett, H. H. Tags: 332. Antithrombotic Therapy: Management of Challenging Patients and Scenarios Source Type: research
Rivaroxaban Thromboprophylaxis in High-Risk Ambulatory Cancer Patients Receiving Systemic Therapy: Results of a Randomized Clinical Trial (CASSINI)
Conclusions: Rivaroxaban significantly reduced VTE and VTE-related death during the on-treatment period but not during the full study period; over one-third of events occurred post discontinuation of study drug. The incidence of major bleeding was low. The Khorana risk score cut-off of ≥2 identified cancer patients at high risk of thrombotic events both at baseline (4.53%) and during study (8.79% with additional 1.66% arterial events in placebo group). These results should inform future recommendations regarding thromboprophylaxis in at-risk ambulatory cancer patients.(Funded by Janssen; ClinicalTrials.gov number, NCT02...
Source: Blood - November 21, 2018 Category: Hematology Authors: Khorana, A. A., Soff, G. A., Kakkar, A. K., Vadhan-Raj, S., Riess, H., Wun, T., Streiff, M. B., Garcia, D. A., Liebman, H. A., Belani, C., O'Reilly, E. M., Patel, J. N., Yimer, H. A., Wildgoose, P., Burton, P., Vijapurkar, U., Kaul, S., Eikelboom, J., McB Tags: Late-Breaking Abstracts Session Source Type: research
Clinical, Laboratory, and Genetic Risk Factors for Thrombosis in Sickle Cell Disease
In conclusion, thrombotic events are common, occurring in 18% of SCD patients over a 10-year follow-up period. HbSS/Sβ0-thalassemia, frequent hospitalizations, kidney disease, and higher systolic blood pressures and AST concentrations were risk factors for thrombosis. Genome-wide marker array analysis points to a potential role of thrombomodulin in SCD-related thrombotic events based on replicated risk variants in THBD. Future studies integrating clinical, laboratory and genetic risk factors may improve our understanding for thrombosis and guide intervention practices in SCD.DisclosuresNo relevant conflicts of interest to declare.
Source: Blood - November 21, 2018 Category: Hematology Authors: Srisuwananukorn, A., Raslan, R., Zhang, X., Shah, B. N., Han, J., Gowhari, M., Jain, S., Molokie, R. E., Gordeuk, V. R., Saraf, S. L. Tags: 114. Hemoglobinopathies, Excluding Thalassemia-Clinical: Organ Damage and Clinical Complications in Sickle Cell Disease Source Type: research
Incidence of Bleeding in Patients with Sickle Cell Disease: A Population Based Study
Conclusion:The findings from our study indicate that SCD patients have a high cumulative incidence of bleeding. While the increased incidence of intracranial, urological, and retinal bleeding has been previously described and are confirmed here, we present the novel finding that SCD patients also have a high incidence of GI bleeding, the majority of which are from an upper GI source. The association of hemorrhagic stroke with a history of ischemic stroke is also confirmed. The association of bleeding with VTE is likely due, at least in part, to anticoagulation. Further studies on the causes and risk factors for GI bleeding...
Source: Blood - November 21, 2018 Category: Hematology Authors: Hariharan, N., Brunson, A. M., Keegan, T. H. M., Wun, T. Tags: 114. Hemoglobinopathies, Excluding Thalassemia-Clinical: Organ Damage and Clinical Complications in Sickle Cell Disease Source Type: research
Reduced Cerebral Metabolic Rate of Oxygen in Adults with Sickle Cell Disease
Conclusion:We observed reduced CMRO2 in patients with SCD compared to healthy controls due to low OEF. A reduced CMRO2 could pose a risk for ischemia, despite high flow rate delivering oxygen, because of low OEF. This is supported by the fact that the silent cerebral infarcts are located in regions with the lowest CMRO2. We postulate that patients with SCD have a reduced capacity to increase the OEF in regions with inadequate CBF resulting in local ischemia and local infarction. The pathogenesis of the reduced OEF remains unclear but could be related to arteriovenous shunting whereby there is insufficient time for oxygen t...
Source: Blood - November 21, 2018 Category: Hematology Authors: Vaclavu, L., Petersen, E. T., VanBavel, E. T., Majoie, C. B., Nederveen, A. J., Biemond, B. J. Tags: 114. Hemoglobinopathies, Excluding Thalassemia-Clinical: Organ Damage and Clinical Complications in Sickle Cell Disease Source Type: research
Low Hemoglobin Increases Risk for Stroke, Kidney Disease, Elevated Estimated Pulmonary Artery Systolic Pressure, and Premature Death in Sickle Cell Disease: A Systematic Literature Review and Meta-Analysis
Conclusions: In conclusion, comprehensive evaluation of peer-reviewed literature published over the past 20 years demonstrates a significant relationship between chronic anemia and worse clinical outcomes in individuals with SCD. Meta-analyses further demonstrate that even relatively modest differences in hemoglobin are important and support hemoglobin increase by ≥1 g/dL as a relevant therapeutic target. These results suggest that interventions that reduce hemolytic anemia may confer clinical benefit in this patient population.DisclosuresAtaga: Novartis: Consultancy, Honoraria; Bioverativ: Honoraria, Membership on an e...
Source: Blood - November 21, 2018 Category: Hematology Authors: Ataga, K. I., Gordeuk, V. R., Allen, I. E., Colby, J., Gittings, K., Agodoa, I. Tags: 114. Hemoglobinopathies, Excluding Thalassemia-Clinical: Organ Damage and Clinical Complications in Sickle Cell Disease Source Type: research
Mast Cells Contribute to Brain Microvascular Permeability in Sickle Cell Disease
We examined the ability of mast cells to stimulate P-selectin expression and BBB permeability via ER stress in a sickle microenvironment.We isolated MCs from HbAA-BERK and HbSS-BERK, control and sickle mice, respectively; incubated them in vitro and collected mast cell conditioned media (MCCM) from HbAA MCs and HbSS MCs. Normal mouse brain microvascular endothelial cells (mBMECs) were treated with unconditioned MCCM, HbAA MCCM, or HbSS MCCM to examine the effect of mast cell activation on endothelium. We observed increased mast cell activity in HbSS mice evinced by significantlyhigher plasma and skin histamine levels, comp...
Source: Blood - November 21, 2018 Category: Hematology Authors: Mittal, A. M., Tran, H., Sagi, V., Nguyen, A., Luk, K., Nguyen, J., Lei, J., Gupta, K. Tags: 113. Hemoglobinopathies, Excluding Thalassemia-Basic and Translational Science: Sickle Cell Disease-Role of Coagulation and Inflammation in Pathophysiology Source Type: research
