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https://www.readbyqxmd.com/read/28092887/acute-myeloid-leukemia-with-myelodysplasia-related-changes-demonstrating-prominent-basophilic-differentiation
#1
Mohammad Bahmanyar, Hong Chang
No abstract text is available yet for this article.
May 19, 2016: Blood
https://www.readbyqxmd.com/read/28091810/severe-lead-toxicosis-in-a-lionhead-rabbit
#2
Kristen M Walter, Karyn Bischoff, Ricardo de Matos
INTRODUCTION: Lead toxicosis occurs in veterinary patients, with few reports involving rabbits, and no previous reports using oral calcium disodium EDTA. CASE REPORT: A 7-year-old male castrated Lionhead rabbit presented to the Cornell University Hospital for Animals (CUHA) for evaluation after a 2-day history of lethargy and a 2-week history of hyporexia. The patient had been observed pulling paint from the walls of the home, a house built circa 1900, in the months prior to presentation...
January 13, 2017: Journal of Medical Toxicology: Official Journal of the American College of Medical Toxicology
https://www.readbyqxmd.com/read/28091362/epicutaneous-immunotherapy-for-the-treatment-of-peanut-allergy-in-children-and-young-adults
#3
Stacie M Jones, Scott H Sicherer, A Wesley Burks, Donald Y M Leung, Robert W Lindblad, Peter Dawson, Alice K Henning, M Cecilia Berin, David Chiang, Brian P Vickery, Robbie D Pesek, Christine B Cho, Wendy F Davidson, Marshall Plaut, Hugh A Sampson, Robert A Wood
BACKGROUND: Peanut allergy is common, life-threatening, and without therapeutic options. We evaluated peanut epicutaneous immunotherapy (EPIT) by using Viaskin Peanut for peanut allergy treatment. OBJECTIVE: We sought to evaluate the clinical, safety, and immunologic effects of EPIT for the treatment of peanut allergy. METHODS: In this multicenter, double-blind, randomized, placebo-controlled study, 74 participants with peanut allergy (ages 4-25 years) were treated with placebo (n = 25), Viaskin Peanut 100 μg (VP100; n = 24) or Viaskin Peanut 250 μg (VP250; n = 25; DBV Technologies, Montrouge, France)...
October 20, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28090813/effects-of-fostriecin-on-%C3%AE-2-adrenoceptor-driven-responses-in-human-mast-cells
#4
Reza Bastan, Nahid Eskandari, Hamidrez J Ardakani, Peter T Peachell
As part of the intracellular processes leading to mast cell and basophil activation, phosphorylation of key substrates is likely to be important. These processes, mediated by phosphatases, are responsible for regulating phosphorylation. The aim of the present study was to determine effects fostriecin - a selective inhibitor of PP2A (protein phosphatase-2) - on β2-adrenoceptor-driven responses in human mast cells. Here, the effects of fostriecin (PP inhibitors) on the inhibition of histamine release from HLMC, on β-adrenoceptor-driven responses in mast cells and on desensitization were investigated...
January 16, 2017: Journal of Immunotoxicology
https://www.readbyqxmd.com/read/28090091/proposed-diagnostic-criteria-and-classification-of-basophilic-leukemias-and-related-disorders
#5
REVIEW
P Valent, K Sotlar, K Blatt, K Hartmann, A Reiter, I Sadovnik, W R Sperr, P Bettelheim, C Akin, K Bauer, T I George, E Hadzijusufovic, D Wolf, J Gotlib, F-X Mahon, D D Metcalfe, H-P Horny, M Arock
Basophils form a distinct cell lineage within the hematopoietic cell family. In various myeloid neoplasms, including chronic myeloid leukemia (CML), basophilia is frequently seen. Acute and chronic basophilic leukemias, albeit rare, have also been described. However, no generally accepted criteria and classification of basophilic leukemias have been presented to date. In order to address this unmet need, a series of Working Conferences and other meetings were organized between March 2015 and March 2016. The current article provides a summary of consensus statements from these meetings, together with proposed criteria to delineate acute basophilic leukemia (ABL) from chronic basophilic leukemia (CBL) and primary forms of the disease where no preceding myeloid malignancy is detected, from the more common ´secondary´ variants...
January 16, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28087937/myeloid-cell-phenotypes-in-susceptibility-and-resistance-to-helminth-parasite-infections
#6
Rick M Maizels, James P Hewitson
Many major tropical diseases are caused by long-lived helminth parasites that are able to survive by modulation of the host immune system, including the innate compartment of myeloid cells. In particular, dendritic cells and macrophages show markedly altered phenotypes during parasite infections. In addition, many specialized subsets such as eosinophils and basophils expand dramatically in response to these pathogens. The changes in phenotype and function, and their effects on both immunity to infection and reactivity to bystander antigens such as allergens, are discussed...
December 2016: Microbiology Spectrum
https://www.readbyqxmd.com/read/28074390/anti-allergic-triterpenes-isolated-from-olive-milled-waste
#7
Asuka Kishikawa, Yhiya Amen, Kuniyoshi Shimizu
The degranulation of basophils stimulated by antigen is one of the allergic mechanisms of immediate hypersensitivity reactions. In a previous study, the β-hexosaminidase release of rat basophilic leukemia (RBL-2H3) cells stimulated by IgE cross-linking was specifically inhibited by ethanol extract of olive milled waste (OMW). OMW is a potential source of triterpenes, which show several biological activities. However, little is known about the effect of triterpenes in OMW on β-hexosaminidase release. Here we investigated anti-allergic triterpenes from the ethanol extract of OMW, and we discuss the structure-activity relationship...
January 10, 2017: Cytotechnology
https://www.readbyqxmd.com/read/28072603/dyserythropoiesis-of-myelodysplastic-syndromes
#8
Carine Lefèvre, Sabrina Bondu, Salomé Le Goff, Olivier Kosmider, Michaela Fontenay
PURPOSE OF REVIEW: Myelodysplastic syndromes (MDS) are heterogeneous diseases of the hematopoietic stem cell in the elderly. Anemia is the main symptom that mostly correlates with dysplastic erythropoiesis in the bone marrow. We will review the recent advances in understanding the diverse mechanisms of dyserythropoiesis. RECENT FINDINGS: Dyserythropoiesis defined as 10% dysplastic erythroid cells in the bone marrow is found in more than 80% of early MDS. Immature erythroblasts accumulate at the expense of mature erythroblasts due to differentiation arrest and apoptosis...
January 7, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28070919/clinical-utility-of-the-basophil-activation-test-for-analysis-of-allergic-transfusion-reactions-a-pilot-study
#9
I Okamura, N Matsuyama, K Yasui, F Hirayama, T Ikeda
BACKGROUND AND OBJECTIVES: In previous studies, we demonstrated that the basophil-activating effects of supernatants found in residual-transfused platelet concentrates (PC-SNs) on whole blood basophils in cases of allergic transfusion reactions (ATRs) could be assessed by the basophil activation test (BAT) in terms of allergen/IgE dependency. However, in these studies, the basophils were derived from third-party healthy volunteers. In this study, we performed BAT using patients' own blood basophils to analyse ATRs...
January 10, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/28069425/an-epigenome-wide-association-study-of-total-serum-immunoglobulin-e-in-hispanic-children
#10
Wei Chen, Ting Wang, Maria Pino-Yanes, Erick Forno, Liming Liang, Qi Yan, Donglei Hu, Daniel E Weeks, Andrea Baccarelli, Edna Acosta-Perez, Celeste Eng, Yueh-Ying Han, Nadia Boutaoui, Catherine Laprise, Gwyneth A Davies, Julian M Hopkin, Miriam F Moffatt, William O C M Cookson, Glorisa Canino, Esteban G Burchard, Juan C Celedón
BACKGROUND: Total immunoglobulin E (IgE) is a therapeutic target in allergic diseases. DNA methylation in white blood cells (WBCs) was associated with total IgE in an epigenome-wide association study (EWAS) of Caucasians. Whether DNA methylation of eosinophils explains those findings is insufficiently understood. METHODS: We tested for association between genome-wide DNA methylation in WBCs and total IgE in two studies of Hispanic children: the Puerto Rico Genetics of Asthma and Lifestyle Study (PR-GOAL, n = 306) and the Genes-environments and Admixture in Latino Americans (GALA II, n = 573)...
January 6, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28064834/use-of-hyaluronidase-in-the-comparison-between-manual-and-automated-hematology-analysis-with-the-advia-120-to-improve-analysis-of-feline-body-cavity-effusions
#11
Sei Ming Lee, Kenneth Williamson, William Weir, Lisa Hulme-Moir, Hayley Haining
Classification of body cavity effusions is an important step in the investigation and diagnosis of disease in cats. Feline inflammatory effusions are often highly proteinaceous and viscous, which can cause clumping of white cells and subsequently inaccurate nucleated cell counts (NCCs) using automated and manual methods. Microscopic assessment of cellularity can also be difficult given the variable thickness of smears and cell clumping, which skews white cell distribution. The ADVIA 120 uses 2 white cell-counting channels, the basophil/lobularity (WBC/baso) and differential/peroxidase channels, which can provide quite different results in highly viscous feline samples and often disagree with smear assessment of cellularity...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28062735/the-ability-of-btk-inhibitors-to-sequester-y551-and-prevent-phosphorylation-determines-potency-for-inhibition-of-fcr-but-not-b-cell-receptor-signaling
#12
Andrew T Bender, Anna Gardberg, Albertina Pereira, Theresa Johenson, Yin Wu, Roland Grenningloh, Jared Head, Federica Morandi, Philipp Haselmayer, Lesley Liu-Bujalski
Bruton's tyrosine kinase (Btk) is expressed in a variety of hematopoietic cells. Btk has been demonstrated to regulate signaling downstream of the B cell receptor (BCR), Fc receptors (FcR), and toll like receptors (TLRs). Btk has become an attractive drug target as Btk inhibition may provide significant efficacy by blocking multiple disease mechanisms simultaneously. Consequently, a large number of Btk inhibitors have been developed. The compounds have diverse binding modes and both reversible and irreversible inhibitors have been developed...
January 6, 2017: Molecular Pharmacology
https://www.readbyqxmd.com/read/28053618/changes-of-hematological-references-depends-on-storage-period-and-temperature-conditions-in-rats-and-dogs
#13
Jung-Min Lee, Jin Seok Kang
Because changes in rat and dog hematological parameters according to storage conditions have been poorly documented, we sought to examine such changes. Blood analysis was performed using two hematology analyzers (ADVIA 2120i and Sysmex XN-V) after storage at room temperature and in cold storage for 5, 24, and 48 h, respectively. Interassay coefficients of variation for hematological parameters analyzed with the ADVIA 2120i and the XN-V showed similar. The levels of hematocrit, mean corpuscular volume, mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration, and platelet (PLT) showed significant variations with time in blood samples of rats and dogs...
December 2016: Laboratory Animal Research
https://www.readbyqxmd.com/read/28052733/melanoma-induced-anemia-could-be-rescued-by-sca-1-mesenchymal-stromal-cells-in-mice
#14
Ning An, Yaozhen Chen, Dandan Yin, Hui-Jie Zhang, Zheng Liu, Fan Feng, Na Li, Jiajia Xin, Wen Yin, Xueqing Xu, Xingbin Hu
The intrinsic basis of cancer-related anemia (CRA) is erythropoiesis disorder, which is a common complication of cancer and exerts a negative influence on the life quality of cancer patients. Cell therapy using mesenchymal stromal cells (MSCs) is considered as a promising method in cancer treatment. Furthermore, MSCs have been used to cure few type of anemia and be considered as a potential strategy to recover anemia radically. However, none reports its application in CRA treatment. In CRA model mice, we found that the number of lin-c-kit+Sca-1+ (LSK) and Sca-1+ MSCs was decreased...
January 4, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/28045974/neonatal-immunization-with-a-single-il-4-antigen-dose-induces-increased-antibody-responses-after-challenge-infection-with-equine-herpesvirus-type-1-ehv-1-at-weanling-age
#15
Bettina Wagner, Gillian Perkins, Susanna Babasyan, Heather Freer, Alison Keggan, Laura B Goodman, Amy Glaser, Sigurbjorg Torsteinsdóttir, Vilhjálmur Svansson, Sigríður Björnsdóttir
Neonatal foals respond poorly to conventional vaccines. These vaccines typically target T-helper (Th) cell dependent B-cell activation. However, Th2-cell immunity is impaired in foals during the first three months of life. In contrast, neonatal basophils are potent interleukin-4 (IL-4) producers. The purpose of this study was to develop a novel vaccine triggering the natural capacity of neonatal basophils to secrete IL-4 and to evaluate if vaccination resulted in B-cell activation and antibody production against EHV-1 glycoprotein C (gC)...
2017: PloS One
https://www.readbyqxmd.com/read/28039304/allergen-valency-dose-and-fc%C3%AE%C2%B5ri-occupancy-set-thresholds-for-secretory-responses-to-pen-a-1-and-motivate-design-of-hypoallergens
#16
Avanika Mahajan, Lama A Youssef, Cédric Cleyrat, Rachel Grattan, Shayna R Lucero, Christopher P Mattison, M Frank Erasmus, Bruna Jacobson, Lydia Tapia, William S Hlavacek, Mark Schuyler, Bridget S Wilson
Ag-mediated crosslinking of IgE-FcεRI complexes activates mast cells and basophils, initiating the allergic response. Of 34 donors recruited having self-reported shrimp allergy, only 35% had significant levels of shrimp-specific IgE in serum and measurable basophil secretory responses to rPen a 1 (shrimp tropomyosin). We report that degranulation is linked to the number of FcεRI occupied with allergen-specific IgE, as well as the dose and valency of Pen a 1. Using clustered regularly interspaced palindromic repeat-based gene editing, human RBL(rαKO) cells were created that exclusively express the human FcεRIα subunit...
December 30, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28035696/hydrophilic-polymer-vasculopathy-with-coinciding-pseudoxanthoma-elasticum-like-changes-in-an-amputated-toe
#17
Silvija P Gottesman, Elham Yousefi, Raavi Gupta
For the past decades, hydrophilic polymer gel coating have been widely used on endovascular devices to decrease friction and to aid with binding and delivering of medications in drug eluting stents. In the recent years, hydrophilic polymer emboli disease has been recognized as an iatrogenic adverse effect which has led to considerable morbidity and mortality of patients. This under-recognized embolic phenomenon now has reproducible pathognomonic histologic findings. Small to medium sized blood vessels are occluded with basophilic, amorphous, non-refractile, non-polarizable, whirled aggregates of foreign body material...
December 30, 2016: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28034549/basophil-activation-test-is-a-relevant-biomarker-of-the-outcome-of-rapid-desensitization-in-platinum-compounds-allergy
#18
Pedro Giavina-Bianchi, Violeta Régnier Galvão, Matthieu Picard, Joana Caiado, Mariana C Castells
BACKGROUND: Rapid drug desensitization (RDD) has become a cornerstone in the management of immediate drug hypersensitivity reactions (DHRs) to chemotherapeutic agents. Because of the inherent risk of anaphylaxis during RDD, biomarkers to predict patients at risk of developing such severe reactions are needed. The basophil activation test (BAT) has been used in DHRs as a diagnostic tool. OBJECTIVE: We evaluated basophil CD63 and CD203c expression (BAT) as a biomarker to assess the safety and effectiveness of RDD in platinum compounds-allergic patients...
December 26, 2016: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/28031757/leukocyte-populations-are-associated-with-heart-rate-variability-after-a-triathlon
#19
Germán Hernández Cruz, José Naranjo Orellana, Adrián Rosas Taraco, Blanca Rangel Colmenero
The purpose of this study was to analyze cellular immune components and their association with heart rate variability in triathlon athletes. Twelve athletes were included (age 36.41 ± 5.57 years, body mass 81.84 ± 10.97 kg) and blood samples were taken one week before, immediately, at 2 and 48 hours, and one week after competition. Total lymphocytes and their subpopulations, neutrophils, basophils, eosinophils and monocytes were analyzed. At the same time, heart rate variability was recorded for 30 minutes using Polar Team2®...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28031487/comprehensive-population-based-genome-sequencing-provides-insight-into-hematopoietic-regulatory-mechanisms
#20
Michael H Guo, Satish K Nandakumar, Jacob C Ulirsch, Seyedeh M Zekavat, Jason D Buenrostro, Pradeep Natarajan, Rany M Salem, Roberto Chiarle, Mario Mitt, Mart Kals, Kalle Pärn, Krista Fischer, Lili Milani, Reedik Mägi, Priit Palta, Stacey B Gabriel, Andres Metspalu, Eric S Lander, Sekar Kathiresan, Joel N Hirschhorn, Tõnu Esko, Vijay G Sankaran
Genetic variants affecting hematopoiesis can influence commonly measured blood cell traits. To identify factors that affect hematopoiesis, we performed association studies for blood cell traits in the population-based Estonian Biobank using high-coverage whole-genome sequencing (WGS) in 2,284 samples and SNP genotyping in an additional 14,904 samples. Using up to 7,134 samples with available phenotype data, our analyses identified 17 associations across 14 blood cell traits. Integration of WGS-based fine-mapping and complementary epigenomic datasets provided evidence for causal mechanisms at several loci, including at a previously undiscovered basophil count-associated locus near the master hematopoietic transcription factor CEBPA The fine-mapped variant at this basophil count association near CEBPA overlapped an enhancer active in common myeloid progenitors and influenced its activity...
December 28, 2016: Proceedings of the National Academy of Sciences of the United States of America
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