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https://www.readbyqxmd.com/read/29656609/monocyte-function-in-patients-with-myelodysplastic-syndrome
#1
Daniel A Pollyea, Brenna R Hedin, Brian P O'Connor, Scott Alper
Myelodysplastic syndrome (MDS) is a malignant hematopoietic stem cell disorder that frequently evolves into acute myeloid leukemia (AML). Patients with MDS are prone to infectious complications, in part due to the presence of severe neutropenia and/or neutrophil dysfunction. However, not all patients with neutropenia become infected, suggesting that other immune cells may compensate in these patients. Monocytes are also integral to immunologic defense; however, much less is known about monocyte function in patients with MDS...
April 14, 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29656536/mmr-deficiency-does-not-sensitize-or-compromise-the-function-of-hematopoietic-stem-cells-to-low-and-high-let-radiation
#2
Rutulkumar Patel, Yulan Qing, Lucy Kennedy, Yan Yan, John Pink, Brittany Aguila, Amar Desai, Stanton L Gerson, Scott M Welford
One of the major health concerns on long-duration space missions will be radiation exposure to the astronauts. Outside the earth's magnetosphere, astronauts will be exposed to galactic cosmic rays (GCR) and solar particle events that are principally composed of protons and He, Ca, O, Ne, Si, Ca, and Fe nuclei. Protons are by far the most common species, but the higher atomic number particles are thought to be more damaging to biological systems. Evaluation and amelioration of risks from GCR exposure will be important for deep space travel...
April 14, 2018: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/29656333/interferon-%C3%AE-salvage-treatment-is-effective-for-patients-with-acute-leukemia-myelodysplastic-syndrome-with-unsatisfactory-response-to-minimal-residual-disease-directed-donor-lymphocyte-infusion-after-allogeneic-hematopoietic-stem-cell-transplantation
#3
Xiaodong Mo, Xiaohui Zhang, Lanping Xu, Yu Wang, Chenhua Yan, Huan Chen, Yuhong Chen, Wei Han, Fengrong Wang, Jingzhi Wang, Kaiyan Liu, Xiaojun Huang
The efficacy of salvage interferon-α (IFN-α) treatment was investigated in patients with unsatisfactory response to minimal residual disease (MRD)-directed donor lymphocyte infusion (DLI) (n = 24). Patients who did not become MRD-negative at 1 month after DLI were those with unsatisfactory response and were eligible to receive salvage IFN-α treatment within 3 months of DLI. Recombinant human IFN-α-2b injections were subcutaneously administered 2-3 times a week for 6 months. Nine (37.5%), 6 (25.0%), and 3 (12...
April 14, 2018: Frontiers of Medicine
https://www.readbyqxmd.com/read/29656137/haploidentical-peripheral-blood-stem-cell-transplantation-demonstrates-stable-engraftment-in-adults-with-sickle-cell-disease
#4
Santosh L Saraf, Annie L Oh, Pritesh R Patel, Karen Sweiss, Matthew Koshy, Sally Campbell-Lee, Michel Gowhari, Shivi Jain, David Peace, John G Quigley, Irum Khan, Robert E Molokie, Nadim Mahmud, Victor R Gordeuk, Damiano Rondelli
We report on the screening and development of haploidentical hematopoietic stem cell transplantation (HSCT) for adult patients with clinically aggressive sickle cell disease (SCD) at our institution. Of 50 adult SCD patients referred for HSCT between 1/2014-3/2017, 20% were denied by insurance. Of 41 patients initially screened, 10% lacked an available haploidentical donor, 29% had elevated donor specific antibodies (DSA) and 34% declined to proceed to HSCT. All 10 patients who were transplanted received peripheral blood stem cells (PBSC)...
April 12, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29656115/autophagy-as-a-pharmacological-target-in-hematopoiesis-and-hematological-disorders
#5
REVIEW
Marion Orsini, Franck Morceau, Mario Dicato, Marc Diederich
Autophagy is involved in many cellular processes, including cell homeostasis, cell death/survival balance and differentiation. Autophagy is essential for hematopoietic stem cell survival, quiescence, activation and differentiation. The deregulation of this process is associated with numerous hematological disorders and pathologies, including cancers. Thus, the use of autophagy modulators to induce or inhibit autophagy emerges as a potential therapeutic approach for treating these diseases and could be particularly interesting for differentiation therapy of leukemia cells...
April 12, 2018: Biochemical Pharmacology
https://www.readbyqxmd.com/read/29655841/lysosomal-acid-lipase-deficiency-allograft-recurrence-and-liver-failure-clinical-outcomes-of-18-liver-transplantation-patients
#6
REVIEW
Donna Lee Bernstein, Steven Lobritto, Alina Iuga, Helen Remotti, Thomas Schiano, Maria Isabel Fiel, Manisha Balwani
Lysosomal acid lipase deficiency (LAL-D) results in progressive microvesicular hepatosteatosis, fibrosis, cirrhosis, dyslipidemia, and vascular disease. Interventions available prior to enzyme replacement therapy development, including lipid lowering medications, splenectomy, hematopoietic stem cell and liver transplantation were unsuccessful at preventing multi-systemic disease progression, and were associated with significant morbidity and mortality. We report two sisters, diagnosed in infancy, who succumbed to LAL-D with accelerated disease progression following splenectomy and liver transplantation...
March 27, 2018: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/29655590/early-initiation-of-extracorporeal-photochemotherapy-increases-response-for-chronic-graft-versus-host-disease-following-steroid-failure
#7
M Gunduz, E Atilla, P A Atilla, P Topcuoglu, O Ilhan
OBJECTIVES: Chronic graft versus host disease (GVHD) is one of the major obstacles to achieve success in allogeneic hematopoietic stem cell transplantation (allo-HSCT). Extracorporeal photochemotherapy (ECP) has been demonstrated to be an effective modality for the treatment of GVHD in previous studies but they vary in terms of initiation and duration. Our aim is to demonstrate the characteristics of our patients who received ECP for chronic GVHD to clarify the best treatment scheme. MATERIAL AND METHODS: In this study, we retrospectively evaluated 34 patients with steroid refractory chronic GVHD (n=34) who were treated with ECP between 2001 and 2015...
April 11, 2018: Transfusion Clinique et Biologique: Journal de la Société Française de Transfusion Sanguine
https://www.readbyqxmd.com/read/29653206/late-effects-screening-guidelines-after-hematopoietic-cell-transplantation-hct-for-hemoglobinopathy-consensus-statement-from-the-second-pediatric-blood-and-marrow-transplant-consortium-international-conference-on-late-effects-after-pediatric-hct
#8
Shalini Shenoy, Javid Gaziev, Emanuele Angelucci, Allison King, Monica Bhatia, Angela Smith, Dorine Bresters, Anne E Haight, Christine N Duncan, Josu de la Fuente, Andrew C Dietz, K Scott Baker, Michael A Pulsipher, Mark C Walters
Allogeneic hematopoietic cell transplantation (HCT) can halt organ damage and eliminate symptoms in hemoglobin disorders, including sickle cell disease (SCD) and thalassemia major (TM). Managing the residual manifestations of pre-HCT disease complications and the long-term effects of HCT requires systematic monitoring, follow-up, and intervention when indicated. Late complications vary with age and disease status at HCT, and with transplant variables such as preparative regimen, donor source and compatibility, and immune reconstitution...
April 10, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29652746/fluorine-18-fluorodeoxyglucose-pet-ct-in-hematopoietic-stem-cell-transplant-patients-with-fusariosis-initial-findings-of-a-case-series-review
#9
Marcelo R Schirmer, Michel P Carneiro, Luiz S Machado, Alessandra L da S Chaves, Flávia P P L Lopes
BACKGROUND: Fusariosis is an opportunistic fungal infection that affects mostly leukemic and hematopoietic stem cell transplant patients. Locally invasive and disseminated infection may occur. Treatment is challenging, and besides evaluation of immune status, one also needs to take into account organ involvement to predict the duration and prognosis. OBJECTIVE: The aim of this study was to present the findings and clinical follow-up from a series of cases of Fusarium spp...
April 12, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29652627/visualizing-intra-population-hematopoietic-cell-heterogeneity-with-self-organizing-maps-of-sims-data
#10
Vahid Mirshafiee, Brendan A C Harley, Mary L Kraft
Characterization of the heterogeneity within stem cell populations, which affects their differentiation potential, is necessary for the design of artificial cultures for stem cell expansion. In this study, we assessed whether self-organizing maps (SOMs) of single cell time-of-flight secondary ion mass spectrometry (TOF-SIMS) data provide insight into the spectral, and thus the related functional heterogeneity between and within three hematopoietic cell populations. SOMs were created of TOF-SIMS data from individual hematopoietic stem and progenitor cells (HSPCs), lineage-committed common lymphoid progenitors (CLPs), and fully differentiated B cells that had been isolated from murine bone marrow via conventional flow cytometry...
March 16, 2018: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/29651666/epoch-regimen-as-salvage-therapy-for-adult-t-cell-leukemia-lymphoma
#11
Eo Toriyama, Yoshitaka Imaizumi, Hiroaki Taniguchi, Jun Taguchi, Jun Nakashima, Hidehiro Itonaga, Shinya Sato, Koji Ando, Yasushi Sawayama, Tomoko Hata, Takuya Fukushima, Yasushi Miyazaki
Adult T-cell leukemia-lymphoma (ATL) is an intractable hematopoietic malignancy with a very poor prognosis. Although improved responses have been achieved through intensive chemotherapy in newly diagnosed patients with aggressive ATL, most patients suffer from relapse or disease recurrence, and an effective salvage therapy, especially for candidates for allogeneic hematopoietic stem cell transplantation (allo-HSCT), is yet to be established. The efficacy of the EPOCH regimen has been reported for several lymphoid malignancies; however, its efficacy for ATL has not been sufficiently evaluated...
April 12, 2018: International Journal of Hematology
https://www.readbyqxmd.com/read/29650777/-mll-leukemia-induction-by-t-9-11-chromosomal-translocation-in-human-hematopoietic-stem-cells-using-genome-editing
#12
Corina Schneidawind, Johan Jeong, Dominik Schneidawind, In-Suk Kim, Jesús Duque-Afonso, Stephen Hon Kit Wong, Masayuki Iwasaki, Erin H Breese, James L Zehnder, Matthew Porteus, Michael L Cleary
Genome editing provides a potential approach to model de novo leukemogenesis in primary human hematopoietic stem and progenitor cells (HSPCs) through induction of chromosomal translocations by targeted DNA double-strand breaks. However, very low efficiency of translocations and lack of markers for translocated cells serve as barriers to their characterization and model development. Here, we used transcription activator-like effector nucleases to generate t(9;11) chromosomal translocations encoding MLL-AF9 and reciprocal AF9-MLL fusion products in CD34+ human cord blood cells...
April 24, 2018: Blood Advances
https://www.readbyqxmd.com/read/29650642/setd2-regulates-quiescence-and-differentiation-of-adult-hematopoietic-stem-cells-by-restricting-rna-polymerase-ii-elongation
#13
Yile Zhou, Xiaomei Yan, Xiaomin Feng, Jiachen Bu, Yunzhu Dong, Peipei Lin, Yoshihiro Hayashi, Rui Huang, Andre Olsson, Paul R Andreassen, H Leighton Grimes, Qian-Fei Wang, Tao Cheng, Zhijian Xiao, Jie Jin, Gang Huang
SET domain containing 2 (Setd2), encoding a histone methyltransferase, is associated with many hematopoietic diseases when mutated. By generating a novel exon 6 conditional knockout mouse model, we described an essential role of Setd2 in maintaining the adult hematopoietic stem cells. Loss of Setd2 results in leukopenia, anemia, and increased platelet accompanied with hypocellularity, erythroid dysplasia, and mild fibrosis in bone marrow. Setd2 knockout mice show significantly decreased hematopoietic stem and progenitor cells except for erythroid progenitors...
April 12, 2018: Haematologica
https://www.readbyqxmd.com/read/29650274/oral-cancer-in-fanconi-anemia-review-of-121-cases
#14
REVIEW
Camila Pinheiro Furquim, Allana Pivovar, José Miguel Amenábar, Carmem Bonfim, Cassius Carvalho Torres-Pereira
Fanconi anemia (FA) is a rare autosomal recessive genetic disorder characterized by aplastic anemia, progressive pancytopenia, congenital anomalies, and increased risk of cancer development. After hematopoietic stem cell transplant (HSCT), patients have an estimated 500-fold increase in the risk of developing head and neck cancer compared to a non-affected, and the oral cavity is affected in one-third of cases. Thus, this study aimed to better understand the natural history of oral cavity cancer in patients affected by FA...
May 2018: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/29650261/maribavir-brincidofovir-and-letermovir-efficacy-and-safety-of-new-antiviral-drugs-for-treating-cytomegalovirus-infections
#15
REVIEW
P Frange, M Leruez-Ville
Cytomegalovirus (CMV) infection is a common complication in immunocompromised patients, especially after hematopoietic stem cell or solid organ transplantation. Therapeutic antiviral options [(val)ganciclovir, foscarnet, cidofovir] are still limited and can expose to severe toxicities. Moreover, prolonged antiviral drug exposure and ongoing viral replication are key factors in the development of antiviral drug resistance. After many years of few tangible advances in terms of new antiviral drugs, we are now experiencing an exciting period characterized by a series of phase III clinical trials incorporating three novel agents: maribavir, brincidofovir, and letermovir...
April 9, 2018: Médecine et Maladies Infectieuses
https://www.readbyqxmd.com/read/29649619/shared-decision-making-in-hematopoietic-stem-cell-transplantation-for-sickle-cell-disease
#16
Keith M Sullivan, Mitchell Horwitz, Ifeyinwa Osunkwo, Nirmish Shah, John J Strouse
No abstract text is available yet for this article.
April 9, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29649618/preimplantation-high-resolution-hla-sequencing-using-next-generation-sequencing
#17
Maryam Rafati, Mohammad Mahdi Akhondi, Mohammad Reza Sadeghi, Seyedeh Zahra Tara, Saeed Reza Ghaffari
Hematopoietic Stem Cell Transplantation (HSCT) is the only therapeutic option in a number of heritable hematologic disorders as well as hematologic cancers. Many parents and families fail to find an HLA-identical donor for their affected family member. In such cases, conceiving for a savior baby remains the only option especially in countries without access to national registries. By means of Next Generation Sequencing (NGS) techniques, in a single experiment on single cell products of IVF, a healthy HLA-identical embryo can be implanted in the uterus of a concerned mother...
April 9, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29649617/reversal-of-t-cell-exhaustion-by-the-first-donor-lymphocyte-infusion-is-associated-with-the-persistently-effective-anti-leukemic-responses-in-patients-with-relapsed-aml-after-allo-hsct
#18
Long Liu, Ying-Jun Chang, Lan-Ping Xu, Xiao-Hui Zhang, Yu Wang, Kai-Yan Liu, Xiao-Jun Huang
Donor lymphocyte infusion is an effective approach to treat acute myeloid leukemia (AML) relapse after allogeneic hematopoietic stem cell transplantation (allo-HSCT) that significantly improves the survival of relapsed patients. However, the mechanism of an effective anti-leukemic response following DLI in AML relapse remains elusive. Here, we investigated the role of T cell exhaustion in AML relapse after allo-HSCT in prospective cohorts of 41 patients with the first AML relapse and 41 non-relapsed AML controls after allo-HSCT and determined whether DLI exerts effective anti-leukemic effects by reversing T cell exhaustion in the relapsed cohorts by detecting the phenotypes and functions of T cells using flow cytometry...
April 9, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29649408/interferon-gamma-impairs-maintenance-and-alters-hematopoietic-support-of-bone-marrow-mesenchymal-stromal-cells
#19
Marieke Goedhart, Anne Cornelissen, Carlijn Kuijk, Sulima Geerman, Marion Kleijer, Jaap D van Buul, Stephan Huveneers, Marc Raaijmakers, Howard A Young, Monika C Wolkers, Carlijn Voermans, Martijn A Nolte
Bone marrow (BM) mesenchymal stromal cells (MSCs) provide micro-environmental support to hematopoietic stem and progenitor cells (HSPCs). Culture-expanded MSCs are interesting candidates for cellular therapies due to their immunosuppressive and regenerative potential which can be further enhanced by pre-treatment with interferon-gamma (IFN-γ). However, it remains unknown whether IFN-γ can also influence hematopoietic support by BM-MSCs. Here, we elucidate the impact of IFN-γ on the hematopoietic support of BM-MSCs...
March 12, 2018: Stem Cells and Development
https://www.readbyqxmd.com/read/29645346/identification-of-a-siglec-f-granulocyte-macrophage-progenitor
#20
Jessica E Bolden, Erin C Lucas, Geyu Zhou, Jeremy A O'Sullivan, Carolyn A de Graaf, Mark D McKenzie, Ladina Di Rago, Tracey M Baldwin, Jake Shortt, Warren S Alexander, Bruce S Bochner, Matthew E Ritchie, Douglas J Hilton, Kirsten A Fairfax
In recent years multi-parameter flow cytometry has enabled identification of cells at major stages in myeloid development; from pluripotent hematopoietic stem cells, through populations with increasingly limited developmental potential (common myeloid progenitors and granulocyte-macrophage progenitors), to terminally differentiated mature cells. Myeloid progenitors are heterogeneous, and the surface markers that define transition states from progenitors to mature cells are poorly characterized. Siglec-F is a surface glycoprotein frequently used in combination with IL-5 receptor alpha (IL5Rα) for the identification of murine eosinophils...
April 12, 2018: Journal of Leukocyte Biology
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