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Hematopoietic stem cells

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https://www.readbyqxmd.com/read/29786546/flt3-itd-compared-with-dnmt3a-r882-mutation-is-a-more-powerful-independent-inferior-prognostic-factor-in-adult-aml-patients-after-allogeneic-hematopoietic-stem-cell-transplantation-a-retrospective-cohort-study
#1
Majid Teremmahi Ardestani, Ahmad Kazemi, Bahram Chahardouli, Saeed Mohammadi, Mohsen Nikbakht, Shahrbano Rostami, Mahdi Jalili, Mohammad Vaezi, Kamran Alimoghaddam, Ardeshir Ghavamzadeh
OBJECTIVE: To identify DNMT3A exon 23 mutations and their prognostic impact in the presence of FLT3-ITD and NPM1 mutations in acute myeloid leukemia (AML) patients treated with Allo-HSCT. MATERIALS AND METHODS: This study analyzed128 adult AML patients referred to the Hematology-Oncology & Stem Cell Research Center of Shariati hospital. FLT3-ITD and NPM1 mutations were detected using fragment analysis. For DNMT3A exon 23 mutation analysis, we used Sanger sequencing...
May 22, 2018: Turkish Journal of Haematology: Official Journal of Turkish Society of Haematology
https://www.readbyqxmd.com/read/29785506/venetoclax-and-low-dose-cytarabine-induced-complete-remission-in-a-patient-with-high-risk-acute-myeloid-leukemia-a-case-report
#2
Bingshan Liu, Roshni Narurkar, Madhura Hanmantgad, Wahib Zafar, Yongping Song, Delong Liu
Conventional combination therapies have not resulted in considerable progress in the treatment of acute myeloid leukemia (AML). Elderly patients with AML and poor risk factors have grave prognosis. Midostaurin has been recently approved for the treatment of FLT-3-mutated AML. Venetoclax, a BCL-2 inhibitor, has been approved for the treatment of relapsed and/or refractory chronic lymphoid leukemia. Clinical trials on applying venetoclax in combination with cytarabine and other agents to treat various hematological malignancies are currently underway...
May 21, 2018: Frontiers of Medicine
https://www.readbyqxmd.com/read/29785446/digital-droplet-pcr-based-absolute-quantification-of-pre-transplant-npm1-mutation-burden-predicts-relapse-in-acute-myeloid-leukemia-patients
#3
Marius Bill, Juliane Grimm, Madlen Jentzsch, Laura Kloss, Karoline Goldmann, Julia Schulz, Stefanie Beinicke, Janine Häntschel, Michael Cross, Vladan Vucinic, Wolfram Pönisch, Gerhard Behre, Georg-Nikolaus Franke, Thoralf Lange, Dietger Niederwieser, Sebastian Schwind
Allogeneic hematopoietic stem cell transplantation is an established consolidation therapy for patients with acute myeloid leukemia. However, relapse after transplantation remains a major clinical problem resulting in poor prognosis. Thus, detection of measurable ("minimal") residual disease to identify patients at high risk of relapse is essential. A feasible method to determine measurable residual disease may be digital droplet PCR (ddPCR) that allows absolute quantification with high sensitivity and specificity without the necessity of standard curves...
May 22, 2018: Annals of Hematology
https://www.readbyqxmd.com/read/29785172/graft-versus-host-disease-from-basic-pathogenic-principles-to-dna-damage-response-and-cellular-senescence
#4
REVIEW
Adam Kuba, Ludek Raida
Graft versus host disease (GVHD), a severe immunogenic complication of allogeneic hematopoietic stem cell transplantation (HSCT), represents the most frequent cause of transplant-related mortality (TRM). Despite a huge progress in HSCT techniques and posttransplant care, GVHD remains a significant obstacle in successful HSCT outcome. This review presents a complex summary of GVHD pathogenesis with focus on references considering basic biological processes such as DNA damage response and cellular senescence.
2018: Mediators of Inflammation
https://www.readbyqxmd.com/read/29785130/human-herpesvirus-6-pneumonitis-in-a-patient-with-follicular-lymphoma-following-immunochemotherapy-with-rituximab
#5
Saeko Kuwahara-Ota, Yoshiaki Chinen, Yoshimi Mizuno, Tomoko Takimoto-Shimomura, Yayoi Matsumura-Kimoto, Kazuna Tanba, Taku Tsukamoto, Shinsuke Mizutani, Yuji Shimura, Tsutomu Kobayashi, Shigeo Horiike, Junya Kuroda
Primary infection with human herpesvirus-6 (HHV-6) commonly occurs at an early age in children, most often at 3 years of age, and is associated with childhood diseases, such as exanthema subitum, hepatitis, febrile convulsions, or encephalitis. However, the virus occasionally reactivates from its latent state in immunosuppressed adults, especially post-transplant, resulting in serious disseminated, sometimes life-threatening end-organ complications. Herein, we report a case of a 68-year-old man with relapsed follicular lymphoma who developed HHV-6 pneumonitis...
2018: Infection and Drug Resistance
https://www.readbyqxmd.com/read/29784961/sarcodon-imbricatus-polysaccharides-improve-mouse-hematopoietic-function-after-cyclophosphamide-induced-damage-via-g-csf-mediated-jak2-stat3-pathway
#6
Xue Wang, Qiubo Chu, Xue Jiang, Yue Yu, Libian Wang, Yaqi Cui, Jiahui Lu, Lirong Teng, Di Wang
Sarcodon imbricatus, a rare medicinal and edible fungus, has various pharmacological bioactivities. We investigated the effects of S. imbricatus polysaccharides (SIPS) on hematopoietic function and identified the underlying mechanisms using in vitro experiments with CHRF, K562, and bone marrow mononuclear cells (BMMNCs) and in vivo experiments with a mouse model of cyclophosphamide-induced hematopoietic dysfunction. We found that SIPS induced proliferation and differentiation of CHRF and K562 cells and upregulated the expression of hematopoietic-related proteins, including p90 ribosomal S6 kinases (RSK1p90), c-Myc, and ETS transcription factor, in the two cell lines...
May 21, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29783907/association-between-potential-drug-interactions-and-clinical-outcomes-in-hematopoietic-stem-cell-transplantations
#7
Ingrid Apm Valverde, Mario Js da Silva, Maely Pf Retto
The association of anti-infective, antineoplastic and immunosuppressant drugs makes patients undergoing hematopoietic stem cell transplantation susceptible to the effects resulting from drug interactions. In this study, we analyzed the potential drug interactions in the association between anti-infective, antineoplastic and immunomodulators agents and their clinical effects presented by patients from a bone marrow transplant service of a Brazilian hospital specialized in cancer treatment. The retrospective cohort involved patients in the conditioning phase undergoing transplantation in the year 2013...
January 1, 2018: Journal of Oncology Pharmacy Practice
https://www.readbyqxmd.com/read/29783023/extended-spectrum-beta-lactamase-producing-enterobacteriaceae-infections-in-haematopoietic-stem-cell-transplant-recipients-epidemiology-and-molecular-characterization
#8
Molka Kharrat, Yosra Chebbi, Farah Ben Tanfous, Amel Lakhal, Saloua Ladeb, Tarek Ben Othmen, Wafa Achour
BACKGROUND: Extended spectrum β-lactamase producing Enterobacteriaceae (ESBL-E) are feared because they generate therapeutic difficulties and have high potential for dissemination. The purpose of our study was to investigate the epidemiology of these infections in hematopoietic stem cell transplant (HSCT) recipients and to determine the genes encoding ESBL. MATERIAL/METHODS: Our retrospective study concerned adult patients hospitalized at the National Bone Marrow Transplant Center and infected with ESBL-E post HSCT between january 2006 and december 2016...
May 18, 2018: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/29782992/single-ultra-high-dose-cholecalciferol-to-prevent-vitamin-d-deficiency-in-pediatric-hematopoietic-stem-cell-transplantation
#9
Gregory Wallace, Sonata Jodele, Kasiani C Myers, Christopher E Dandoy, Javier El-Bietar, Adam Nelson, Ashley Teusink-Cross, Pooja Khandelwal, Cynthia Taggart, Catherine M Gordon, Stella M Davies, Jonathan C Howell
BACKGROUND: Vitamin D (vitD) deficiency is prevalent among childhood hematopoietic stem cell transplantation (HSCT) recipients and associated with inferior transplant survival at 100 days after transplantation. Achieving and maintaining therapeutic vitD levels in HSCT recipients is extremely challenging in the first 3-6 months after transplant due to poor compliance in the setting of mucositis, and concomitant use of critical transplant drugs that interfere with vitD absorption. We sought to evaluate the safety and efficacy of a single, ultra-high dose of vitD given prior to childhood HSCT to maintain levels in a therapeutic range during the peri-transplantation period...
May 18, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29782940/defining-osteoblast-and-adipocyte-lineages-in-the-bone-marrow
#10
J L Pierce, D L Begun, J J Westendorf, M E McGee-Lawrence
Bone is a complex endocrine organ that facilitates structural support, protection to vital organs, sites for hematopoiesis, and calcium homeostasis. The bone marrow microenvironment is a heterogeneous niche consisting of multipotent musculoskeletal and hematopoietic progenitors and their derivative terminal cell types. Amongst these progenitors, bone marrow mesenchymal stem/stromal cells (BMSCs) may differentiate into osteogenic, adipogenic, myogenic, and chondrogenic lineages to support musculoskeletal development as well as tissue homeostasis, regeneration and repair during adulthood...
May 18, 2018: Bone
https://www.readbyqxmd.com/read/29782339/transcription-factors-foxo-in-the-regulation-of-homeostatic-hematopoiesis
#11
Vijay Menon, Saghi Ghaffari
PURPOSE OF REVIEW: Work in the past decade has revealed key functions of the evolutionary conserved transcription factors Forkhead box O (FOXO) in the maintenance of homeostatic hematopoiesis. Here the diverse array of FOXO functions in normal and diseased hematopoietic stem and progenitor cells is reviewed and the main findings in the past decade are highlighted. Future work should reveal FOXO-regulated networks whose alterations contribute to hematological disorders. RECENT FINDINGS: Recent studies have identified unanticipated FOXO functions in hematopoiesis including in hematopoietic stem and progenitor cells (HSPC), erythroid cells, and immune cells...
May 17, 2018: Current Opinion in Hematology
https://www.readbyqxmd.com/read/29781586/treatment-algorithms-for-systemic-sclerosis-according-to-experts
#12
Andreu Fernández-Codina, Kyle M Walker, Janet E Pope
INTRODUCTION: Treatment for many aspects of systemic sclerosis (SSc) lacks agreement. OBJECTIVES: To generate SSc treatment algorithms endorsed by high percentage of SSc experts. METHODS: Experts from the Scleroderma Clinical Trials Consortium and the Canadian Scleroderma Research group (N=170) were asked whether they agreed with SSc algorithms (from 2012). Two consensus rounds refined agreement; 62 (36%), 54 (32%) and 48 (28%) experts completed surveys...
May 21, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29781563/associations-between-neutrophil-recovery-time-infections-and-relapse-in-pediatric-acute-myeloid-leukemia
#13
Ditte J A Løhmann, Peter H Asdahl, Jonas Abrahamsson, Shau-Yin Ha, Ólafur G Jónsson, Gertjan J L Kaspers, Minna Koskenvuo, Birgitte Lausen, Barbara De Moerloose, Josefine Palle, Bernward Zeller, Henrik Hasle
BACKGROUND: Children with acute myeloid leukemia (AML) treated similarly show different toxicity and leukemic responses. We investigated associations between neutrophil recovery time after the first induction course, infection and relapse in children treated according to NOPHO-AML 2004 and DB AML-01. PROCEDURE: Newly diagnosed patients with AML with bone marrow blast <5% between day 15 after the start of the treatment and the start of second induction course, and in complete remission after the second induction course were included (n = 279)...
May 21, 2018: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/29780814/targeting-chronic-myeloid-leukemia-stem-cells-can-transcriptional-program-be-a-druggable-target-for-cancers
#14
REVIEW
Yosuke Masamoto, Mineo Kurokawa
Chronic myeloid leukemia (CML) is a myeloproliferative neoplasm resulting from acquisition of constitutively active BCR-ABL protein tyrosine kinase in a hematopoietic stem cell (HSC). Though tyrosine kinase inhibitors (TKIs) have changed a fatal disease into manageable disease, most patients cannot discontinue TKI treatment due to persistence of TKI-resistant leukemia stem cells (LSCs). Much effort has been made to find out factors or pathways specifically operating in LSCs to selectively target LSCs, with some promising results at least in preclinical models...
2018: Stem Cell Investigation
https://www.readbyqxmd.com/read/29780388/regulation-of-hematopoietic-cell-development-and-function-through-phosphoinositides
#15
REVIEW
Mila Elich, Karsten Sauer
One of the most paramount receptor-induced signal transduction mechanisms in hematopoietic cells is production of the lipid second messenger phosphatidylinositol(3,4,5)trisphosphate (PIP3 ) by class I phosphoinositide 3 kinases (PI3K). Defective PIP3 signaling impairs almost every aspect of hematopoiesis, including T cell development and function. Limiting PIP3 signaling is particularly important, because excessive PIP3 function in lymphocytes can transform them and cause blood cancers. Here, we review the key functions of PIP3 and related phosphoinositides in hematopoietic cells, with a special focus on those mechanisms dampening PIP3 production, turnover, or function...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29779898/oncostatin-m-and-kit-ligand-control-hematopoietic-stem-cell-fate-during-zebrafish-embryogenesis
#16
Christopher B Mahony, Corentin Pasche, Julien Y Bertrand
Understanding the molecular pathways controlling hematopoietic stem cell specification and expansion is a necessary milestone to perform regenerative medicine. Here, we used the zebrafish model to study the role of the ckit signaling pathway in this process. We show the importance of kitb/kitlgb signaling in the specification and expansion of hematopoietic stem cells (HSCs), in the hemogenic endothelium and caudal hematopoietic tissue (CHT), respectively. Moreover, we identified the zebrafish ortholog of Oncostatin M (osm) in the zebrafish genome...
May 10, 2018: Stem Cell Reports
https://www.readbyqxmd.com/read/29779356/-the-family-and-clinical-analysis-of-matched-parent-child-in-hematopoietic-stem-cell-transplantation
#17
Y H Fan, J Chen, D P Wu
No abstract text is available yet for this article.
May 14, 2018: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/29779349/-influence-of-donor-recipient-sex-matching-on-outcomes-of-haploidentical-hematopoietic-stem-cell-transplantation-for-acute-leukemia
#18
W J Yu, Y Wang, L P Xu, X H Zhang, K Y Liu, X J Huang
Objective: To determine the influence of donor-recipient sex matching on outcome of haploidentical hematopoietic stem cell transplantation (haplo-HSCT) for acute leukemia in the setting of T-cell-replete transplants. Methods: The retrospective study is based on 1 160 consecutive patients who received their first haplo-HSCT for acute leukemia between April 2002 and December 2014 at Peking University Institute of Hematology. The patients were divided into the sex-matched group and sex-mismatched group in terms of the recipient and donor sex...
May 14, 2018: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/29779346/-prognostic-significance-of-18-f-fluorodeoxyglucose-positron-emission-tomography-in-patients-with-diffuse-large-b-cell-lymphoma-undergoing-autologous-stem-cell-transplantation
#19
Z T Ying, L Mi, X J Wang, Y W Zhang, Z Yang, Y Q Song, X P Wang, W Zheng, N J Lin, M F Tu, Y Xie, L Y Ping, C Zhang, W P Liu, L J Deng, J Zhu
Objective: To evaluate the prognostic value of (18)F-fluorodeoxyglucose positron emission tomography (PET)/computed tomography (CT) in patients with diffuse large B cell lymphoma (DLBCL) undergoing autologous hematopoietic stem cell transplantation (auto-HSCT). Methods: Forty-eight patients with DLBCL treated at Peking University Cancer Hospital between November 2010 and December 2014 were assessed. All patients underwent PET/CT scanning prior to or after auto-HSCT. Correlation analysis was done based upon patients characteristics, PET/CT scan results and survival...
May 14, 2018: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/29778716/the-hematopoietic-stem-cell-niche-what-s-so-special-about-bone
#20
REVIEW
Benjamin J Frisch
Hematopoietic stem cells (HSCs) require a supportive microenvironment to regulate their function and produce sufficient hematopoietic cells over the lifetime of an individual. With the exception of fish, all vertebrates, including mammals, maintain HSCs in a complex niche within the bone marrow. Several bone specific cellular populations have been implicated as components of the HSC niche and are part of a complex network that regulates HSC functions. However, the full extent of interactions within the HSC niche, and the role of individual cell populations remain to be fully elucidated...
May 17, 2018: Bone
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