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Specialty: Hematology
Procedure: Transplants
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Total 261 results found since Jan 2013.
Interleukin-1 receptor inhibition reduces stroke size in a murine model of sickle cell disease.
Abstract
Sickle cell disease (SCD) is associated with chronic hemolytic anemia and a heightened inflammatory state. The causal role of inflammatory pathways in stroke associated with SCD is unclear. Therefore, the hypothesis that deletion of the non-hematopoietic interleukin-1 receptor (IL-1R) pool may be beneficial in SCD was pursued. Since potential deleterious effects of IL-1R signaling in SCD could be mediated via downstream production of interleukin-6 (IL-6), the role of the non-hematopoietic IL-6 pool was also addressed. Bone marrow transplantation (BMT) from SCD to wild-type (WT) recipient mice was used to ...
Source: Haematologica - August 12, 2020 Category: Hematology Authors: Venugopal J, Wang J, Mawri J, Guo C, Eitzman D Tags: Haematologica Source Type: research
Human stem cells transplanted into the rat stroke brain migrate to spleen via lymphatic and inflammation pathways.
This study is the first to demonstrate brain-to-periphery migration of stem cells, advancing the novel concept of harnessing the lymphatic system in mobilizing stem cells to sequester peripheral inflammation as a brain repair strategy.
PMID: 30514806 [PubMed - as supplied by publisher]
Source: Haematologica - December 4, 2018 Category: Hematology Authors: Xu K, Lee JY, Kaneko Y, Tuazon JP, Vale F, van Loveren H, Borlongan CV Tags: Haematologica Source Type: research
Allogeneic Umbilical Cord Blood Infusion for Adults with Ischemic Stroke (CoBIS): Clinical Outcomes From a Phase 1 Study
Background: Over 750,000 patients/year in the US experience a debilitating stroke. Approximately 88% of adult strokes are ischemic, and occur when cerebral blood flow is blocked by a clot or mechanical event. The initial neuroinflammatory response following stroke results in the release of inflammatory mediators which may exacerbate the development of cerebral edema and secondary tissue injury. Preclinical data suggest that cell-based therapy may favorably alter these processes through paracrine signaling that reduces inflammation, promotes angiogenesis, neurogenesis and recruitment of endogenous cell repair mechanisms.
Source: Biology of Blood and Marrow Transplantation - February 22, 2017 Category: Hematology Authors: Joanne Kurtzberg, Jesse D. Troy, Ellen Bennett, Rebecca Durham, Elizabeth J. Shpall, Jonathan Wiese, John Volpi, Samir Belagaje, Daniel Laskowitz Source Type: research
Platelet-derived VWF is not essential for normal thrombosis and hemostasis but fosters ischemic stroke injury in mice
Von Willebrand factor (VWF) is a key hemostatic protein synthesized in both endothelial cells and megakaryocytes. Megakaryocyte-derived VWF is stored in α-granules of platelets and is enriched in hyperactive "ultra-large" VWF multimers. To elucidate the specific contribution of platelet VWF in hemostasis and thrombosis, we performed crossed bone marrow transplantations between C57BL/6J and Vwf–/– mice to generate chimeric mice. Chimeric mice specifically lacking platelet VWF showed normal tail bleeding and carotid artery thrombosis, similar to wild-type mice. Chimeric mice with VWF present only in platele...
Source: Blood - October 1, 2015 Category: Hematology Authors: Verhenne, S., Denorme, F., Libbrecht, S., Vandenbulcke, A., Pareyn, I., Deckmyn, H., Lambrecht, A., Nieswandt, B., Kleinschnitz, C., Vanhoorelbeke, K., De Meyer, S. F. Tags: Platelets and Thrombopoiesis, Thrombosis and Hemostasis Source Type: research
Allogeneic Umbilical Cord Blood Infusion for Adults with Ischemic Stroke
Approximately 87% of adult strokes are ischemic in etiology, and occur when cerebral blood flow is blocked by a clot or mechanical event. Immediately after the stroke, inflammatory mediators may exacerbate the development of cerebral edema and secondary tissue injury. Cell therapy may favorably alter the natural history of these processes through paracrine signaling that reduces inflammation, promotes angiogenesis, neurogenesis and recruitment of endogenous cell repair mechanisms. We hypothesize that cell therapy using non HLA matched umbilical cord blood (CB) from an unrelated donor would provide benefit by reducing the a...
Source: Biology of Blood and Marrow Transplantation - February 19, 2016 Category: Hematology Authors: Joanne Kurtzberg, Rebecca Durham, Daniel Laskowitz, Andrew E. Balber, Ellen Bennett Tags: Clinical Cellular Therapy Source Type: research
Outcomes in Children with Severe Vasculopathy from Sickle Cell Anemia after Treatment with Chronic Transfusion, Surgical Revascularization and/or Allogenic Hematopoetic Stem Cell Transplantation
Conclusions: The risk for cerebral infarction and/or vasculopathy progression after initiation of treatment with either chronic transfusion, HSCT or EDAS is still a major concern. Our data suggest HSCT and surgical revascularization with chronic transfusion provide the greatest benefit in reducing stroke risk and HSCT reduces risk for progression of a severe vasculopathy. Additional, large population studies are needed to clarify the risk.DisclosuresMajumdar: NIMHD: Research Funding. Campbell: Functional Fluitics: Membership on an entity's Board of Directors or advisory committees; Global Blood Therapeutics: Membership on ...
Source: Blood - November 21, 2018 Category: Hematology Authors: Johnson, C. W., Majumdar, S., Campbell, A. D., Magge, S., Darbari, D. S., Webb, J., Diab, Y. A., Nickel, R. S., Speller-Brown, B., Carpenter, J., Abraham, A. Tags: 114. Hemoglobinopathies, Excluding Thalassemia-Clinical: Poster I Source Type: research
Enhanced Long-Term Brain Magnetic Resonance Imaging Evaluation of Children with Sickle Cell Disease after Hematopoietic Cell Transplantation
Sickle cell disease (SCD) is the most common cause of stroke in children. Strokes and “clinically silent” infarcts are caused by progressive sickle vasculopathy in large and small vessels [1-4], leading to SCD brain vasculopathy. Both stroke types can affect neurological and cognitive function starting early in childhood [1,2,5-9]. Stroke or stroke risk is a frequent indication f or pediatric SCD transplantation [10-12]. Based on several studies using brain magnetic resonance imaging (MRI) and magnetic resonance angiography (MRA), hematopoietic stem cell transplantation (HCT) is believed to halt progression of vasculopathy [10,12-16].
Source: Biology of Blood and Marrow Transplantation - January 8, 2017 Category: Hematology Authors: Nancy S. Green, Monica Bhatia, Erica Y. Griffith, Mahvish Qureshi, Courtney Briamonte, Mirko Savone, Stephen Sands, Margaret T. Lee, Angela Lignelli, Adam M. Brickman Source Type: research
How I manage cerebral vasculopathy in children with sickle cell disease
Summary
Sickle cell disease induces specific brain alterations that involve both the macrocirculation and the microcirculation. The main overt neurovascular complications in children are infarctive stroke, transient ischaemic attack and cerebral haemorrhage. Silent cerebral infarction, cognitive dysfunction and recurrent headache are also common. Cerebrovascular disease selectively affects children with the HbSS or HbS‐β0 genotypes (i.e. sickle cell anaemia). The incidence of stroke peaks between 2 and 5 years of age (1·02/100 patient‐years) and increases with the severity of the anaemia. Most strokes can be prevent...
Source: British Journal of Haematology - May 5, 2015 Category: Hematology Authors: Valentine Brousse, Manoelle Kossorotoff, Mariane Montalembert Tags: State of the Art Review Source Type: research
Transcranial Doppler Screening Adherence Among Children with Sickle Cell Anemia Seen in the Emergency Department
Conclusion: Patients with SCA who present to the ED and are nonadherent to TCD screening guidelines are less likely to have had a recent hematology clinic visit. Therefore, the ED may be an important location for identifying patients lost to regular clinic follow-up in need of a TCD. An intervention that specifically targets this patient population will likely improve TCD screening rates and stroke prevention.Figure.DisclosuresNo relevant conflicts of interest to declare.
Source: Blood - November 21, 2018 Category: Hematology Authors: Weisman, J. K., Diamond, C., Kappa, S., Nickel, R. S. Tags: 903. Outcomes Research-Non-Malignant Hematology: Poster II Source Type: research
Late Cardiovascular Complications after Hematopoietic Cell Transplantation
Abstract: The authors sought to better understand the combined effects of pretransplant, transplant, and post-transplant factors in determining risks of serious cardiovascular disease after hematopoietic cell transplantation (HCT). Hospitalizations and deaths associated with serious cardiovascular outcomes were identified among 1379 Washington State residents who received HCT (57% allogeneic and 43% autologous) at a single center from 1985 to 2005, survived ≥ 2 years, and followed through 2008. Using a nested case-cohort design, relationships (hazard ratios [HRs]) between potential risk factors and outcomes were examined...
Source: Biology of Blood and Marrow Transplantation - February 24, 2014 Category: Hematology Authors: Eric J. Chow, Kenneth Wong, Stephanie J. Lee, Kara L. Cushing-Haugen, Mary E.D. Flowers, Debra L. Friedman, Wendy M. Leisenring, Paul J. Martin, Beth A. Mueller, K. Scott Baker Tags: Clinical Research Source Type: research
Long-term treatment follow-up of children with sickle cell disease monitored with abnormal transcranial Doppler velocities
We present the long-term follow-up of SCA children from the Créteil newborn cohort (1992-2012) detected at risk by TCD and placed on chronic transfusions. Patients with normalized velocities and no stenosis were treated with hydroxyurea, known to decrease anemia and hemolytic rate. Trimestrial Doppler was performed and transfusions restarted immediately in the case of reversion to abnormal velocities. Patients with a genoidentical donor underwent transplant. Abnormal time-averaged maximum mean velocities (TAMMV) ≥200 cm/s were detected in 92 SCA children at a mean age of 3.7 years (range, 1.3-8.3 years). No strok...
Source: Blood - April 6, 2016 Category: Hematology Authors: Bernaudin, F., Verlhac, S., Arnaud, C., Kamdem, A., Hau, I., Leveille, E., Vasile, M., Kasbi, F., Madhi, F., Fourmaux, C., Biscardi, S., Gluckman, E., Socie, G., Dalle, J.-H., Epaud, R., Pondarre, C. Tags: Pediatric Hematology, Sickle Cell Disease, Free Research Articles, Red Cells, Iron, and Erythropoiesis, Clinical Trials and Observations Source Type: research
Probability of TCD-Normalization in the "Drepagreffe" Trial Comparing Transplantation to Chronic Transfusion in Sickle Cell Anemia Children with Abnormal-Transcranial Doppler Is Associated with Lower Ang-2 and BDNF Plasma Levels
This study confirms the association between high levels of BDNF and high velocities, and suggests that transplantation increases the likelihood of TCD-normalization compared to transfusion, and is associated with reduced Ang-2 expression in plasma, which may reflect improved brain oxygenation.DisclosuresThuret: Addmedica: Research Funding; bluebird bio: Research Funding; Novartis: Research Funding. Pondarré: Addmedica: Membership on an entity's Board of Directors or advisory committees; Novartis: Honoraria; Blue Bird Bio: Honoraria. Bernaudin: AddMedica: Honoraria; Pierre fabre: Research Funding; Cordons de Vie: Res...
Source: Blood - November 21, 2018 Category: Hematology Authors: Bernaudin, M., Khelif, Y., Chadebech, P., Bodivit, G., Jouard, A., Verlhac, S., Paillard, C., Thuret, I., Guitton, C., Runel, C., Missud, F., Arnaud, C., Kamdem, A., Pondarre, C., Pirenne, F., Bernaudin, F. Tags: 114. Hemoglobinopathies, Excluding Thalassemia-Clinical: Novel or Improved Approaches To Treating Sickle Cell Disease Source Type: research
Prospective Study of Apixaban for Primary Prevention of Venous Thromboembolism in Patients with Multiple Myeloma Receiving Immunomodulatory Therapy
ConclusionsIn this pilot study of 50 patients, low-dose apixaban was safe and well tolerated as thromboprophylaxis for patients with MM receiving IMiDs. No patients experienced VTE, major hemorrhage, stroke, or MI. Further randomized studies are needed to validate apixaban as a standard primary prevention anti-thrombotic strategy for patients with MM receiving IMiDs.DisclosuresMoslehi: Bristol-Myers Squibb: Consultancy, Research Funding. Jagasia: Incyte Corporation: Membership on an entity's Board of Directors or advisory committees.
Source: Blood - November 21, 2018 Category: Hematology Authors: Cornell, R. F., Goldhaber, S. Z., Engelhardt, B. G., Moslehi, J., Jagasia, M., Patton, D., Harrell, S. L., Hall, R. L., Wyatt, H., Piazza, G. Tags: 332. Antithrombotic Therapy: Poster I Source Type: research
Efficacy and Safety of Pomalidomide in Combination with Prednisone in Patients with Myelofibrosis and Anemia -- Final Results of a Prospective Phase 2 Study
CONCLUSION:Pomalidomide with prednisone is safe therapy with good anti-anemia activity in patients with MF. It could lead to transfusion independence in one third of patients for a median duration of about 30 months. ClinicalTrials.gov Identifier: NCT00946270.Table 1.DisclosuresDaver: Alexion: Consultancy; ImmunoGen: Consultancy; Pfizer: Research Funding; Karyopharm: Research Funding; Otsuka: Consultancy; Novartis: Consultancy; ARIAD: Research Funding; Incyte: Consultancy; Pfizer: Consultancy; BMS: Research Funding; Sunesis: Research Funding; Daiichi-Sankyo: Research Funding; Sunesis: Consultancy; Kiromic: Research Funding...
Source: Blood - November 21, 2018 Category: Hematology Authors: Masarova, L., Daver, N. G., Kadia, T. M., Pemmaraju, N., Jabbour, E. J., Zhou, L., Pierce, S. A., Cortes, J. E., Kantarjian, H. M., Verstovsek, S. Tags: 634. Myeloproliferative Syndromes: Clinical: Poster I Source Type: research
Description of the First Cases with ADAMTS13 Mutations in Hungary
CONCLUSIONS:Clinical and molecular characterization of the first 5 Hungarian cases with ADAMTS13 mutations was presented. Compound heterozygous, damaging ADAMTS13 mutations with deficient plasma ADAMTS13 activity were associated with serious clinical consequences. In case of thrombotic microangiopathy in young patients with stroke, or HELLP syndrome, complete workup for ADAMTS13 activity and inhibitors is necessary, and genetic analysis should be considered. Three new ADAMTS13 mutations (c.1016_1017delCA, c.3199T>A , c.2839C>T) were identified and shown to be associated with decreased plasma ADAMTS13 activity.Disclos...
Source: Blood - November 21, 2018 Category: Hematology Authors: Reti, M., Sinkovits, G., Cseprekal, O., Csuka, D., Szilagyi, A., Farkas, Z., Klucsik, Z., Szederjesi, A., Wagner, L., Reusz, G., Kremer Hovinga, J. A., Rigo, J., Masszi, T., Prohaszka, Z. Tags: 311. Disorders of Platelet Number or Function Source Type: research
