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neutrophilic leukemia

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https://www.readbyqxmd.com/read/29319583/the-infectious-and-non-infectious-etiology-clinical-picture-and-outcome-of-neutropenia-in-immunocompetent-hospitalized-children
#1
Odeya David, Yariv Fruchtman, Ruslan Sergienko, Joseph Kapelushnik, Eugene Leibovitz
BACKGROUND: Acquired neutropenia in immunocompetent children is common and its differential diagnosis ranges from benign causes to life-threatening diseases. We described the etiology, clinical picture and outcome of new onset neutropenia in immunocompetent children assessed in the emergency department and hospitalized at our medical center. PATIENTS AND METHODS: Previously healthy children admitted with neutropenia (absolute neutrophil count [ANC] <1.5 x 10/L) were included...
January 9, 2018: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/29311244/coxiella-burnetii-inhibits-neutrophil-apoptosis-by-exploiting-survival-pathways-and-anti-apoptotic-protein-mcl-1
#2
Rama Cherla, Yan Zhang, Lindsey Ledbetter, Guoquan Zhang
Our previous study demonstrated that neutrophils play an important role in host defense against Coxiella burnetii infection in mice. In this study, C. burnetii avirulent Nine Mile phase II (NMII) was used to examine if C. burnetii can modulate mouse bone marrow-derived neutrophil apoptosis. The results indicated that NMII can inhibit neutrophil apoptosis. Western blotting demonstrated that caspase-3 cleavage was decreased, while phosphorylated mitogen-activated protein kinase (MAPK) p38 and extracellular signal-regulated kinase 1 (Erk1) were increased in NMII-infected neutrophils...
January 8, 2018: Infection and Immunity
https://www.readbyqxmd.com/read/29310473/a-new-approach-for-diagnosing-chronic-myelomonocytic-leukemia-using-structural-parameters-of-sysmex-xntm-analyzers-in-routine-laboratory-practice
#3
Françoise Schillinger, Elise Sourdeau, Marouane Boubaya, Lucile Baseggio, Sylvain Clauser, Edouard Cornet, Camille Debord, Jean-Pierre Defour, Frédérique Dubois, Marion Eveillard, Anne-Cécile Galoisy, Marie-Odile Geay, François Mullier, Vanessa Nivaggioni, Valérie Soenen, Pascal Morel, Francine Garnache-Ottou, Emily Ronez, Valérie Bardet, Eric Deconinck
According to WHO recommendations, diagnosis of chronic myelomonocytic leukemia (CMML) beforehand requires microscopic examination of peripheral blood to identify dysplasia and/or blasts when monocytes are greater or equal to 1.0 × 109/L and 10% of leucocytes. We analyzed parameters derived from SysmexTM XN analyzers to improve the management of microscopic examination for monocytosis. We analyzed results of the complete blood count and the positioning and dispersion parameters of polymorphonuclear neutrophils and monocytes in 61 patients presenting with CMML and 635 control patients presenting with a reactive monocytosis...
January 8, 2018: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/29302254/terminally-differentiating-eosinophils-express-neutrophil-primary-granule-proteins-as-well-as-eosinophil-specific-granule-proteins-in-a-temporal-manner
#4
Karam Kim, Sae Mi Hwang, Sung Min Kim, Sung Woo Park, Yunjae Jung, Il Yup Chung
Neutrophils and eosinophils, 2 prominent granulocytes, are commonly derived from myelocytic progenitors through successive stages in the bone marrow. Our previous genome-wide transcriptomic data unexpectedly showed that genes encoding a multitude of neutrophil primary granule proteins (NPGPs) were markedly downregulated during the end period of eosinophilic terminal differentiation when cord blood (CB) cluster of differentiation (CD) 34+ cells were induced to differentiate toward the eosinophil lineage during a 24-day culture period...
December 2017: Immune Network
https://www.readbyqxmd.com/read/29296747/single-umbilical-cord-blood-with-or-without-cd34-cells-from-a-third-party-donor-in-adults-with-leukemia
#5
Jaime Sanz, Mi Kwon, Guiomar Bautista, Miguel A Sanz, Pascual Balsalobre, José Luis Piñana, Carlos Solano, Rafael Duarte, Christelle Ferrá, Ignacio Lorenzo, Carmen Martín, Pere Barba, María Jesús Pascual, Rodrigo Martino, Jorge Gayoso, Ismael Buño, Carmen Regidor, Almudena de la Iglesia, Juan Montoro, José Luis Díez-Martín, Guillermo F Sanz, Rafael Cabrera
We retrospectively compared the clinical outcomes of adults with acute leukemia who received single-unit umbilical cord blood (UCB) transplantation (sUCBT) (n = 135) or stem cell transplant using coinfusion of a UCB graft with CD34+ cells from a third-party donor (Haplo-Cord) (n = 72) at different institutions within the Grupo Español de Trasplante Hematopoyético. In multivariable analysis, patients in the Haplo-Cord group showed more rapid neutrophil (hazard ratio [HR], 2.3; 95% confidence interval [CI], 1...
June 27, 2017: Blood Advances
https://www.readbyqxmd.com/read/29295921/lymphocytes-eject-interferogenic-mitochondrial-dna-webs-in-response-to-cpg-and-non-cpg-oligodeoxynucleotides-of-class-c
#6
Björn Ingelsson, Daniel Söderberg, Tobias Strid, Anita Söderberg, Ann-Charlotte Bergh, Vesa Loitto, Kourosh Lotfi, Mårten Segelmark, Giannis Spyrou, Anders Rosén
Circulating mitochondrial DNA (mtDNA) is receiving increasing attention as a danger-associated molecular pattern in conditions such as autoimmunity, cancer, and trauma. We report here that human lymphocytes [B cells, T cells, natural killer (NK) cells], monocytes, and neutrophils derived from healthy blood donors, as well as B cells from chronic lymphocytic leukemia patients, rapidly eject mtDNA as web filament structures upon recognition of CpG and non-CpG oligodeoxynucleotides of class C. The release was quenched by ZnCl2, independent of cell death (apoptosis, necrosis, necroptosis, autophagy), and continued in the presence of TLR9 signaling inhibitors...
January 2, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29295645/favorable-immune-signature-in-cll-patients-defined-by-antigen-specific-t-cell-responses-might-prevent-second-skin-cancers
#7
Juliane Sarah Walz, Daniel Johannes Kowalewski, Linus Backert, Annika Nelde, Oliver Kohlbacher, Benjamin Weide, Lothar Kanz, Helmut Rainer Salih, Hans-Georg Rammensee, Stefan Stevanović
The course of chronic lymphocytic leukemia (CLL), inducing an immunosuppressed state that also affects T cells as central components of adaptive immunity, predisposes patients to develop second malignancies with skin cancer being the most common. Recently, we found that prevalence of memory T cells with specificity for CLL-associated antigens defined by mass spectrometry-based immunopeptidome analysis correlated with a significant survival benefit. Here, we analyzed our CLL patient cohort for second skin (pre)malignancies and found a significantly lower incidence of skin cancer in the patients showing immune responses to CLL-associated antigens...
January 3, 2018: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/29289756/the-role-of-janus-kinase-signaling-in-graft-versus-host-disease-and-graft-versus-leukemia
#8
REVIEW
Mark A Schroeder, Jaebok Choi, Karl Staser, John F DiPersio
For patients with hematologic malignancies, allogeneic hematopoietic cell transplantation (alloHCT) offers a potential curative treatment option, primarily due to an allogeneic immune response against recipient tumor cells (ie, graft-versus-leukemia [GVL] activity). However, many recipients of alloHCT develop graft-versus-host disease (GVHD), in which allogeneic immune responses lead to the damage of healthy tissue. GVHD is a leading cause of nonrelapse mortality and a key contributor to morbidity among patients undergoing alloHCT...
December 28, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29288518/participation-of-delta-annexin-a3-in-the-ribosomal-protein-s19-c-terminus-dependent-inhibitory-mechanism-of-the-neutrophil-c5a-receptor-through-delta-lactoferrin
#9
Koji Yamanegi, Naoko Yamada, Keiji Nakasho, Hiroshi Nishiura
Although C5a receptor (C5aR) interacting with its agonist C5a promotes acute inflammation during the initiation phase, the roles of the recycling C5aR during the resolution phase are still unclear. We found that C5aR interacted with its antagonist/agonist ribosomal protein S19 (RP S19) polymer or a RP S19 polymer functional analogue S-tagged C5a/RP S19, which connects an RP S19 C-terminus (IAGQVAAANKKH) to the S-tagged C5a C-terminus, promoted acute inflammation at the resolution phase via an activation of the apoptosis-inducing transcription factor delta lactoferrin (δLf) in neutrophils and the membrane mobilizing factor full-length annexin A3 (ANXA3) in macrophages...
December 29, 2017: Pathology International
https://www.readbyqxmd.com/read/29286918/cd9-expression-indicates-a-poor-outcome-in-acute-lymphoblastic-leukemia
#10
Peiqi Liang, Miao Miao, Zhuogang Liu, Hongtao Wang, Wei Jiang, Shiyu Ma, Chuan Li, Rong Hu
OBJECTIVE: We undertook a single-center retrospective study to determine the relationship between CD9 and acute lymphoblastic leukemia (ALL). MATERIALS AND METHODS: In total, 112 newly diagnosed patients in our center were enrolled in the study. Their clinical information was collected and the patients werefollowed over the course of the study. Flow cytometry was used to detect the expression of CD9. RESULTS: CD9 expression was more common in B cell acute lymphoblastic leukemia (B-ALL) and patients > 40 years old...
December 20, 2017: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/29226717/atypical-chronic-myeloid-leukemia-a-rare-entity-with-management-challenges
#11
Prajwal Dhakal, Krishna Gundabolu, Catalina Amador, Supratik Rayamajhi, Vijaya Raj Bhatt
The aim of our study was to review the clinicopathologic features and management of atypical chronic myeloid leukemia (aCML). Relevant manuscripts published in English were searched using PubMed. aCML is diagnosed as per WHO 2016 classification in the presence of leukocytosis ≥13 × 109/l with circulating neutrophil precursors ≥10%, monocytes less than 10%, minimal basophils, hypercellular bone marrow with granulocytic proliferation and dysplasia, bone marrow blast less than 20% and absence of BCR/ABL fusion gene...
December 11, 2017: Future Oncology
https://www.readbyqxmd.com/read/29220700/prognostic-importance-of-aurora-kinases-and-mitotic-spindle-genes-transcript-levels-in-myelodysplastic-syndrome
#12
Daniela de Paula Borges, Antônio Wesley Araújo Dos Santos, Carlos Roberto Koscky Paier, Howard Lopes Ribeiro, Marília Braga Costa, Izabelle Rocha Farias, Roberta Taiane Germano de Oliveira, Ivo Gabriel da Frota França, Gabrielle Melo Cavalcante, Sílvia Maria Meira Magalhães, Ronald Feitosa Pinheiro
Myelodysplastic syndrome (MDS) are a heterogeneous group of clonal disease characterized by insufficiency of bone marrow, increase of apoptosis and increased risk of acute leukemia progression. Proteins related to the mitotic spindle (AURKA, AURKB, TPX2), to the mitotic checkpoint (MAD2, CDC20) and the regulation of the cell cycle (p21) are directly related to chromosomal stability and tumor development. This study aimed to evaluate the mRNA expression levels of these genes in 101 MDS patients using a real-time PCR methodology...
November 28, 2017: Leukemia Research
https://www.readbyqxmd.com/read/29208261/recurrent-malignancy-associated-atypical-neutrophilic-dermatosis-with-noninfectious-shock
#13
REVIEW
Kathryn Nicole Kinser, Kamaldeep Panach, Arturo Ricardo Dominguez
Sweet syndrome (SS) or acute febrile neutrophilic dermatosis presents with the sudden onset of fever, leukocytosis and tender, erythematous, edematous, well-demarcated papules and plaques that histopathologically demonstrate a dense neutrophilic infiltrate. A total of 20% of patients with SS have malignancy-associated disease that can present with bullous or atypical skin lesions that mimic pyoderma gangrenosum, another neutrophilic dermatosis. Both entities exist on a spectrum, and in the context of underlying malignancy, these neutrophilic diseases become less clinically distinct...
December 2017: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/29204379/the-best-texture-features-for-leukocytes-recognition
#14
Omid Sarrafzadeh, Alireza M Dehnavi, Hossein Y Banaem, Ardeshir Talebi, Arshin Gharibi
Background: Differential counting of white blood cells (WBCs or leukocytes) is a common task to diagnose many diseases such as leukemia, and infections. An accurate process for recognizing leukocytes is to evaluate a blood smear under a microscope by an expert. Since, this procedure is manual, time-consuming and tedious, making the procedure automatic would overcome these problems. In an automated CAD (Computer-Aided-Design) system for this purpose, a crucial module is leukocytes recognition...
October 2017: Journal of Medical Signals and Sensors
https://www.readbyqxmd.com/read/29200171/reduced-neutrophil-elastase-activity-and-neutrophil-extracellular-traps-in-pediatric-acute-myeloid-leukemia-may-increase-the-rate-of-infections
#15
Sivan Berger-Achituv, Ronit Elhasid
Data on the production of neutrophil extracellular traps (NETs) in leukemia patients are scant. Phagocytosis, hydrogen peroxide, neutrophil elastase and myeloperoxidase enzymatic activity as well as NETs formation were studied in 10 pediatric acute lymphoblastic leukemia and 7 pediatric acute myeloid leukemia (AML) patients after induction chemotherapy. Median neutrophil elastase activity and NETs formation were lower in AML versus acute lymphoblastic leukemia (41% vs. 90%, P=0.005 and 51% vs. 94%, P=0.008, respectively)...
December 1, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/29196412/a-phase-1-trial-of-vadastuximab-talirine-as-monotherapy-in-patients-with-cd33-positive-acute-myeloid-leukemia-aml
#16
Eytan M Stein, Roland B Walter, Harry P Erba, Amir T Fathi, Anjali S Advani, Jeffrey E Lancet, Farhad Ravandi, Tibor Kovacsovics, Daniel J DeAngelo, Dale Bixby, Stefan Faderl, Anand P Jillella, Phoenix Ho, Megan M O'Meara, Baiteng Zhao, Charles Biddle-Snead, Anthony S Stein
Vadastuximab talirine (SGN-CD33A, 33A) is an antibody-drug conjugate consisting of pyrrolobenzodiazepine dimers linked to a monoclonal antibody targeting CD33, which is expressed in the majority of acute myeloid leukemia (AML) patients. This phase 1 study (clinicaltrials.gov NCT01902329) evaluated the safety, pharmacokinetics, and preliminary activity of vadastuximab talirine and determined the recommended monotherapy dose in patients with relapsed or refractory AML. Additional expansion cohorts tested vadastuximab talirine in specific subpopulations of relapsed AML, and in a cohort of older, treatment-naïve patients...
December 1, 2017: Blood
https://www.readbyqxmd.com/read/29186194/human-t-cell-leukemia-virus-type-1-infects-multiple-lineage-hematopoietic-cells-in-vivo
#17
Rie Furuta, Jun-Ichirou Yasunaga, Michi Miura, Kenji Sugata, Akatsuki Saito, Hirofumi Akari, Takaharu Ueno, Norihiro Takenouchi, Jun-Ichi Fujisawa, Ki-Ryang Koh, Yusuke Higuchi, Mohamed Mahgoub, Masakazu Shimizu, Fumihiko Matsuda, Anat Melamed, Charles R Bangham, Masao Matsuoka
Human T-cell leukemia virus type 1 (HTLV-1) infects mainly CD4+CCR4+ effector/memory T cells in vivo. However, it remains unknown whether HTLV-1 preferentially infects these T cells or this virus converts infected precursor cells to specialized T cells. Expression of viral genes in vivo is critical to study viral replication and proliferation of infected cells. Therefore, we first analyzed viral gene expression in non-human primates naturally infected with simian T-cell leukemia virus type 1 (STLV-1), whose virological attributes closely resemble those of HTLV-1...
November 29, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29177697/neuroprotective-and-anti-inflammatory-effects-of-a-dodecamer-peptide-harboring-ninjurin-1-cell-adhesion-motif-in-the-postischemic-brain
#18
Hye-Kyung Lee, Il-Doo Kim, Hahnbie Lee, Lidan Luo, Seung-Woo Kim, Ja-Kyeong Lee
It has been reported that the innate immune response plays important roles in brain ischemia and that the infiltration of blood-derived immune cells is a key initiator of this response. Nerve injury-induced protein 1 (Ninjurin 1, Ninj1) is a cell adhesion molecule responsible for cell-to-cell interactions between immune cells and endothelial cells. In the present study, we investigated the proinflammatory and neuroprotective effects of Ninj1 and a dodecamer peptide harboring Ninj1 N-terminal adhesion motif (N-NAM, Pro26~Asn37) in a rat middle cerebral artery occlusion (MCAO) model of stroke...
November 14, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/29174474/iron-overload-in-hematological-disorders
#19
REVIEW
Eitan Fibach, Eliezer A Rachmilewitz
While most common symptom of impairment of iron homeostasis is iron deficiency anemia, some hematological disorders are associated with iron overload (IO). These disorders are related mainly to chronic severe hemolytic anemia, where red blood cells (RBC) or their precursors are destroyed prematurely (hemolyzed), leading to anemia that cannot be compensated by increased production of new RBC. In such cases, IO is mainly due to repeated RBC transfusions and/or increased uptake of iron in the gastrointestinal tract...
December 2017: La Presse Médicale
https://www.readbyqxmd.com/read/29174416/unrelated-donor-umbilical-cord-blood-transplant-versus-unrelated-hematopoietic-stem-cell-transplant-in-patients-with-acute-leukemia-a-meta-analysis-and-systematic-review
#20
REVIEW
Xiao Lou, Chuanhua Zhao, Hu Chen
Acute leukemia is a global disease with a poor prognosis for many patients. While an increasing number of patients with acute leukemia are being treated with unrelated hematopoietic stem cell transplants (HSCT) or umbilical cord blood transplants (UCBT), recent comparative reports of these 2 procedures are lacking. Therefore, we conducted a meta-analysis of the safety and efficacy of unrelated HSCT and unrelated single-unit UCBT for the treatment of pediatric and adult patients with acute lymphoblastic leukemia (ALL) or acute myeloid leukemia (AML)...
November 15, 2017: Blood Reviews
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