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https://www.readbyqxmd.com/read/28239955/the-novel-hla-drb1-15-140-allele-discovered-in-a-taiwanese-unrelated-hematopoietic-stem-cell-donor
#1
K L Yang, J Ng, A Lazaro, P Y Lin
One nucleotide substitution at residue 91 of HLA-DRB1*15:02:01:01 results in a new allele, HLA-DRB1*15:140.
February 26, 2017: HLA
https://www.readbyqxmd.com/read/28239658/loss-of-immune-homeostasis-dictates-shiv-rebound-after-stem-cell-transplantation
#2
Christopher W Peterson, Clarisse Benne, Patricia Polacino, Jasbir Kaur, Cristina E McAllister, Abdelali Filali-Mouhim, Willi Obenza, Tiffany A Pecor, Meei-Li Huang, Audrey Baldessari, Robert D Murnane, Ann E Woolfrey, Keith R Jerome, Shiu-Lok Hu, Nichole R Klatt, Stephen DeRosa, Rafick P Sékaly, Hans-Peter Kiem
The conditioning regimen used as part of the Berlin patient's hematopoietic cell transplant likely contributed to his eradication of HIV infection. We studied the impact of conditioning in simian-human immunodeficiency virus-infected (SHIV-infected) macaques suppressed by combination antiretroviral therapy (cART). The conditioning regimen resulted in a dramatic, but incomplete depletion of CD4(+) and CD8(+) T cells and CD20(+) B cells, increased T cell activation and exhaustion, and a significant loss of SHIV-specific Abs...
February 23, 2017: JCI Insight
https://www.readbyqxmd.com/read/28239465/pd-1-blockade-induces-remissions-in-relapsed-classical-hodgkin-lymphoma-following-allogeneic-hematopoietic-stem-cell-transplantation
#3
James Godfrey, Michael R Bishop, Sahr Syed, Elizabeth Hyjek, Justin Kline
BACKGROUND: Allogeneic hematopoietic stem cell transplantation and checkpoint blockade therapy are immune-based therapies that have activity in selected refractory hematologic malignancies. Interest has developed in combining these treatments for high-risk hematologic diseases. However, there is concern that checkpoint blockade could augment graft-versus-host disease, and very few studies have evaluated the safety of checkpoint blockade in the post-allogeneic setting. Here, we report the outcomes of three patients with relapsed classical Hodgkin's lymphoma following allogeneic transplant that were treated with the anti-PD-1 antibody, nivolumab...
2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28239380/development-of-three-different-nk-cell-subpopulations-during-immune-reconstitution-after-pediatric-allogeneic-hematopoietic-stem-cell-transplantation-prognostic-markers-in-gvhd-and-viral-infections
#4
Sabine Huenecke, Claudia Cappel, Ruth Esser, Verena Pfirrmann, Emilia Salzmann-Manrique, Sibille Betz, Eileen Keitl, Julia Banisharif-Dehkordi, Shahrzad Bakhtiar, Christoph Königs, Andrea Jarisch, Jan Soerensen, Evelyn Ullrich, Thomas Klingebiel, Peter Bader, Melanie Bremm
Natural killer (NK) cells play an important role following allogeneic hematopoietic stem cell transplantation (HSCT) exerting graft-versus-leukemia/tumor effect and mediating pathogen-specific immunity. Although NK cells are the first donor-derived lymphocytes reconstituting post-HSCT, their distribution of CD56(++)CD16(-) (CD56(bright)), CD56(++)CD16(+) (CD56(intermediate=int)), and CD56(+)CD16(++) (CD56(dim)) NK cells is explicitly divergent from healthy adults, but to some extent comparable to the NK cell development in early childhood...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28238792/an-all-recombinant-protein-based-culture-system-specifically-identifies-hematopoietic-stem-cell-maintenance-factors
#5
Aki Ieyasu, Reiko Ishida, Takaharu Kimura, Maiko Morita, Adam C Wilkinson, Kazuhiro Sudo, Toshinobu Nishimura, Jun Ohehara, Yoko Tajima, Chen-Yi Lai, Makoto Otsu, Yukio Nakamura, Hideo Ema, Hiromitsu Nakauchi, Satoshi Yamazaki
Hematopoietic stem cells (HSCs) are considered one of the most promising therapeutic targets for the treatment of various blood disorders. However, due to difficulties in establishing stable maintenance and expansion of HSCs in vitro, their insufficient supply is a major constraint to transplantation studies. To solve these problems we have developed a fully defined, all-recombinant protein-based culture system. Through this system, we have identified hemopexin (HPX) and interleukin-1α as responsible for HSC maintenance in vitro...
February 10, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28238202/brain-abnormalities-in-fucosidosis-transplantation-or-supportive-therapy
#6
Minyan Jiang, Sha Liu, Hua Jiang, Yunting Lin, Yongxian Shao, Hao Hu, Xiaoyuan Zhao, Hongsheng Liu, Yonglan Huang, Li Liu
Fucosidosis is a rare lysosomal storage disease caused by α-fucosidase deficiency, which leads to progressive neurological deterioration and death. Hematopoietic stem cell transplantation is the best curative therapy if performed during the early stages of disease. We report two fucosidosis patients with brain abnormalities and the challenge faced in their management. The first patient received supportive therapy and the second one firstly underwent unrelated donor umbilical cord blood transplantation. After a period of follow-up, we found neurological symptoms were worsening day by day on patient1...
February 25, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28238014/positive-minimal-residual-disease-of-flt3-itd-before-hematopoietic-stem-cell-transplantation-resulted-in-a-poor-prognosis-of-an-acute-myeloid-leukemia
#7
Yuka Iwasaki, Rituo Nishiuchi, Michinori Aoe, Takahide Takahashi, Hirokazu Watanabe, Chiho Tokorotani, Kiyoshi Kikkawa, Akira Shimada
Acute myeloid leukemia (AML) patients with fms-related tyrosine kinase 3 (FLT3)-internal tandem duplication (ITD) often have a poor prognosis, even after hematopoietic stem cell transplantation (HSCT). We report a case of AML with FLT3-ITD identified upon initial diagnosis, who received HSCT at complete remission after 3 consecutive chemotherapies. However, the patient relapsed when the same FLT3-ITD clone emerged, and finally died. Retrospective analysis revealed an allelic ratio of FLT3-ITD/wild type of 1...
February 2017: Acta Medica Okayama
https://www.readbyqxmd.com/read/28237966/drosophila-model-of-myeloproliferative-neoplasm-reveals-a-feed-forward-loop-in-the-jak-pathway-mediated-by-p38-mapk-signalling
#8
Ana Terriente-Félix, Lidia Pérez, Sarah J Bray, Angel R Nebreda, Marco Milán
Myeloproliferative neoplasms (MPNs) of the Philadelphia-negative class comprise polycythemia vera, essential thrombocythemia and primary myelofibrosis (PMF). They are associated with aberrant amounts of myeloid lineage cells in the blood, and in the case of overt PMF, with the development of myelofibrosis in the bone marrow and the failure to produce normal blood cells. These diseases are usually caused by gain-of-function mutations in the kinase JAK2 Here we use Drosophila to investigate the consequences of activation of the JAK2 ortholog in hematopoiesis...
February 24, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28236856/could-mucin-16-and-colony-stimulating-factor-2-receptor-beta-possible-graft-versus-host-disease-biomarkers-medical-hypotheses
#9
Milena Monteiro de Souza, Fabiana Martins de Paula, Ricardo Hsieh, Maria Cristina Martins Almeida Macedo, Marcelo Andreetta Corral, Thaís Borguezan Nunes, Fernanda De Paula, Silvia Vanessa Lourenço
Graft versus host disease (GVHD) occurs after bone marrow transplantation and is one of the most important causes of death worldwide. Reviews demonstrated GVHD patients with involvement of various tissues and organs, such as salivary glands. The diagnosis of acute GVHD has been the biopsies and the histopathologic evaluation of tissue from an involved organ. These procedures are invasive. Saliva proteins as possible biomarker for GVHD could facilitate the management and diagnosis accuracy. For support the proposed hypotheses, in this pilot study we collected whole saliva samples from patients with undergoing allogeneic hematopoietic cell transplantation (HCT) and from healthy subjects...
March 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28236836/reprint-of-long-term-survivorship-after-hematopoietic-cell-transplantation-roadmap-for-research-and-care
#10
REVIEW
Minoo Battiwalla, André Tichelli, Navneet S Majhail
The number of survivors after hematopoietic cell transplantation (HCT) is expected to dramatically increase over the next decade. Significant and unique challenges confront survivors for decades after their underlying indication (malignancy or marrow failure) has been cured by HCT. The National Institutes of Health (NIH) Late Effects Consensus Conference in June 2016 brought together international experts in the field to plan the next phase of survivorship efforts. Working groups laid out the roadmap for collaborative research and health care delivery...
March 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28236795/therapeutic-monitoring-of-pediatric-transplant-patients-with-conversion-to-generic-tacrolimus
#11
Natalia Riva, Paulo Cáceres Guido, Nieves Licciardone, Oscar Imventarza, Marta Monteverde, Raquel Staciuk, Alberto Charroqui, Paula Schaiquevich
OBJECTIVE: Therapeutic monitoring during interchange of tacrolimus commercial formulations is essential to ensure similar exposure in transplant patients. However, there are limited data in the pediatric transplant population. This study aims to evaluate exposure, safety and efficacy in maintenance pediatric transplant patients under generic tacrolimus substitution. METHOD: Pediatric patients who underwent interchange of tacrolimus formulations were detected by the Service of Pharmacy and included in this study...
March 1, 2017: Farmacia Hospitalaria
https://www.readbyqxmd.com/read/28235900/mesenchymal-stromal-cell-derived-extracellular-vesicles-promote-myeloid-biased-multipotent-hematopoietic-progenitor-expansion-via-toll-like-receptor-engagement
#12
Natalya A Goloviznina, Santhosh Chakkaramakkil Verghese, Young Me Yoon, Oleh Taratula, Daniel L Marks, Peter Kurre
No abstract text is available yet for this article.
February 24, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28235862/reactive-oxygen-species-producing-myeloid-cells-act-as-a-bone-marrow-niche-for-sterile-inflammation-induced-reactive-granulopoiesis
#13
Haiyan Zhu, Hyun-Jeong Kwak, Peng Liu, Besnik Bajrami, Yuanfu Xu, Shin-Young Park, Cesar Nombela-Arrieta, Subhanjan Mondal, Hiroto Kambara, Hongbo Yu, Li Chai, Leslie E Silberstein, Tao Cheng, Hongbo R Luo
Both microbial infection and sterile inflammation augment bone marrow (BM) neutrophil production, but whether the induced accelerated granulopoiesis is mediated by a common pathway and the nature of such a pathway are poorly defined. We recently established that BM myeloid cell-derived reactive oxygen species (ROS) externally regulate myeloid progenitor proliferation and differentiation in bacteria-elicited emergency granulopoiesis. In this article, we show that BM ROS levels are also elevated during sterile inflammation...
February 24, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28235851/cpg-island-hypomethylation-may-contribute-to-aml-initiation
#14
(no author information available yet)
DNMT3A(R882) mutations induce focal hypomethylation in AML cells and normal hematopoietic cells.
February 24, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28235774/development-of-platelets-during-steady-state-and-inflammation
#15
REVIEW
Gerhard Müller-Newen, Matthias B Stope, Thomas Kraus, Patrick Ziegler
Megakaryocytes (MK) are the sole source of platelets in the body. They develop from lineage-committed hematopoietic stem and progenitor cells (HSPCs) via intermediate cells, which differ in morphology, size, ploidy, and surface phenotype. Development and maturation of MKs is governed by different transcription factors, including GATA-1, E26 transformation-specific transcription factor (ETS) family members, nuclear factor erythroid 2 transcription factor (NF-E2), and STAT3. During such challenges as acute inflammation, platelets are consumed in high numbers and must be replenished to secure survival of the host...
February 24, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28235674/thrombopoietin-contributes-to-the-formation-and-the-maintenance-of-hematopoietic-progenitor-containing-cell-clusters-in-the-aorta-gonad-mesonephros-region
#16
Kaho Harada, Ikuo Nobuhisa, Maha Anani, Kiyoka Saito, Tetsuya Taga
In the midgestation mouse embryo, hematopoietic cell clusters containing hematopoietic stem/progenitor cells arise in the aorta-gonad-mesonephros (AGM) region. We have previously reported that forced expression of the Sox17 transcription factor in CD45(low)c-Kit(high) AGM cells, which are the hematopoietic cellular component of the cell clusters, and subsequent coculture with OP9 stromal cells in the presence of three cytokines, stem cell factor (SCF), interleukin-3 (IL-3), and thrombopoietin (TPO), led to the formation and the maintenance of cell clusters with cells at an undifferentiated state in vitro...
February 21, 2017: Cytokine
https://www.readbyqxmd.com/read/28235203/epigenetic-memory-underlies-cell-autonomous-heterogeneous-behavior-of-hematopoietic-stem-cells
#17
Vionnie W C Yu, Rushdia Z Yusuf, Toshihiko Oki, Juwell Wu, Borja Saez, Xin Wang, Colleen Cook, Ninib Baryawno, Michael J Ziller, Eunjung Lee, Hongcang Gu, Alexander Meissner, Charles P Lin, Peter V Kharchenko, David T Scadden
No abstract text is available yet for this article.
February 23, 2017: Cell
https://www.readbyqxmd.com/read/28234738/successful-myeloablative-matched-unrelated-donor-hematopoietic-stem-cell-transplantation-in-a-young-girl-with-gata2-deficiency-and-emberger-syndrome
#18
Mohammed Ramzan, Jane Lowry, Sarah Courtney, Joerg Krueger, Tal Schechter Finkelstein, Muhammad Ali
Patients with GATA2 (Emberger syndrome) deficiency needs early hematopoietic stem cell transplant (HSCT) before evolving in to myelodysplastic syndrome or acute myeloid leukemia and with time given compromised organ dysfunction leads to increase regimen-related toxicities. Most published cases have used nonmyeloablative conditioning regimens, show higher incidences of rejection and relapse rates and umbilical cord blood transplant has been reported to be suboptimal in patients with GATA2 deficiency because of longer period of engraftment leads to more infections and mortality...
February 23, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28234571/genotyping-applications-for-transplantation-and-transfusion-management-the-emory-experience
#19
Ross M Fasano, Harold Cliff Sullivan, Robert A Bray, Howard M Gebel, Erin K Meyer, Annie M Winkler, Cassandra D Josephson, Sean R Stowell, Alexander Sandy Duncan, John D Roback
Current genotyping methodologies for transplantation and transfusion management employ multiplex systems that allow for simultaneous detection of multiple HLA antigens, human platelet antigens, and red blood cell (RBC) antigens. The development of high-resolution, molecular HLA typing has led to improved outcomes in unrelated hematopoietic stem cell transplants by better identifying compatible alleles of the HLA-A, B, C, DRB1, and DQB1 antigens. In solid organ transplantation, the combination of high-resolution HLA typing with solid-phase antibody identification has proven of value for highly sensitized patients and has significantly reduced incompatible crossmatches at the time of organ allocation...
March 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/28233701/acetyl-l-carnitine-partially-prevents-benzene-induced-hematotoxicity-and-oxidative-stress-in-c3h-he-mice
#20
Rongli Sun, Juan Zhang, Haiyan Wei, Xing Meng, Qin Ding, Fengxia Sun, Meng Cao, Lihong Yin, Yuepu Pu
Benzene is an environmental pollutant and occupational toxicant which induces hematotoxicity. Our previous metabonomics study suggested that acetyl-l-carnitine (ALCAR) decreased in the mouse plasma and bone marrow (BM) cells due to benzene exposure. In the present study, the topic on whether ALCAR influences hematotoxicity caused by benzene exposure was explored. Thirty-two male C3H/He mice were divided into four groups: control group (C: vehicle, oil), benzene group (150mg/kg body weight (b.w.) benzene), benzene+A1 group (150mg/kg b...
February 13, 2017: Environmental Toxicology and Pharmacology
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