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https://www.readbyqxmd.com/read/28523571/congenital-immature-pure-erythroid-leukemia-with-e-cadherin-expression
#1
Akihiro Tamura, Suguru Uemura, Atsuro Saito, Saki Okubo, Nanako Nino, Teppei Tahara, Takehito Yokoi, Kenji Kishimoto, Toshiaki Ishida, Daiichiro Hasegawa, Keiichiro Kawasaki, Seiji Yoshimoto, Hideto Nakao, Makiko Yoshida, Yoshiyuki Kosaka
Congenital pure erythroid leukemia is exceedingly rare and poses a diagnostic challenge. We report an atypical case of congenital pure erythroid leukemia that did not express typical erythroid markers. The patient presented with a high white blood cell count with blastic cells at birth. Although flow cytometric analyses of peripheral blood and bone marrow showed a large CD45-negative cell population, we did not identify any evidence of monoclonality. While the circulating blasts decreased with only supportive care, hepatomegaly with multiple nodules was accompanied by liver failure, disseminated intravascular coagulation, and development of hemophagocytic lymphohistiocytosis...
May 18, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28521840/characterising-pvrbsa-an-exclusive-protein-from-plasmodium-species-infecting-reticulocytes
#2
Darwin A Moreno-Pérez, Luis A Baquero, Diana M Chitiva-Ardila, Manuel A Patarroyo
BACKGROUND: Plasmodium vivax uses multiple ligand-receptor interactions for preferential invasion of human reticulocytes. Several of these ligands have been identified by in silico approaches based on the role displayed by their orthologs in other Plasmodium species during initial adhesion or invasion. However, the cell adhesion role of proteins that are exclusive to species that specifically invade reticulocytes (as P. vivax and P. cynomolgi) has not been evaluated to date. This study aimed to characterise an antigen shared between Plasmodium species that preferentially infect reticulocytes with a focus on assessing its binding activity to target cells...
May 18, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28446271/-expression-of-aurora-family-genes-in-acute-leukemia-and-its-clinical-significance
#3
Zi-Lei Liu, Ying Xing, Tao Li, Chong Wang, Su-Fang Liu, Hua-Yan Zhao, Rong-Hui Zhang, Ya-Jing Ma, Xin-Ye Zhang, Wen-Liang Tian, Liu Liu, Hui Sun, Ling Sun
OBJECTIVE: To explore the mRNA expression of Aurora-A,B,C(AUR-A,B,C) in acute leukemia(AL) and their correlations with the clinical indications. METHODS: The mRNA expression levels of AUR-A,B,C in 73 cases of newly diagnosed AL (untreated group), 20 cases of AL with remission (remission group) and 14 healthy volunteers as control (healthy group) were detected by QRT-PCR, and the difference of expression levels in difference groups, their correlations with clinical indicators and the correlation between the AUR-A,B,C mRNA expression levels themselves were analyzed...
April 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28414070/the-unhealthy-attraction-of-plasmodium-vivax-to-reticulocytes-expressing-transferrin-receptor-1-cd71
#4
REVIEW
Benoit Malleret, Laurent Rénia, Bruce Russell
The majority of malaria parasite species prefer to invade reticulocytes, the most infamous being Plasmodium vivax. While the absence of an in vitro continuous culture method has hampered the study of P. vivax invasion biology, studies utilising primate models and ex vivo assays have provided some important insights. Most importantly, P. vivax merozoites have a strong preference for a subset of immature erythrocytes characterised by the expression of the transferrin receptor (CD71). This current opinion piece on P...
April 13, 2017: International Journal for Parasitology
https://www.readbyqxmd.com/read/28372797/unique-high-and-homogenous-surface-expression-of-the-transferrin-receptor-cd71-on-murine-plasmacytoid-dendritic-cells-in-different-tissues
#5
Anne Lippitsch, Yuri Chukovetskyi, Nelli Baal, Gregor Bein, Holger Hackstein
Plasmacytoid dendritic cells (pDC) are of increasing interest in cancer vaccine development, but many functions of these highly specialized, multifaceted cells are poorly understood. The transferrin receptor CD71 has also been suggested to function as an antigen uptake receptor on professional antigen-presenting cells. In this study, we employed multiparameter flow cytometry to investigate CD71 expression on various leukocyte subsets, including DC subsets, granulocytes, macrophages, T and B lymphocytes, γδ T cells, and natural killer cells...
March 29, 2017: Cellular Immunology
https://www.readbyqxmd.com/read/28372578/hpv16-e2-protein-modifies-self-renewal-and-differentiation-rate-in-progenitor-cells-of-human-immortalized-keratinocytes
#6
Victoria Domínguez-Catzín, Alicia-María Reveles-Espinoza, Janet Sánchez-Ramos, Raúl Cruz-Cadena, Diana Lemus-Hernández, Efraín Garrido
BACKGROUND: Cervical cancer is the fourth cause of death worldwide by cancer in women and is a disease associated to persistent infection with human papillomavirus (HPV), particularly from two high-risk types HPV16 and 18. The virus initiates its replicative cycle infecting cells located in the basal layer of the epithelium, where a small population of epithelial stem cells is located performing important functions of renewal and maintenance of the tissue. Viral E2 gene is one of the first expressed after infection and plays relevant roles in the replicative cycle of the virus, modifying fundamental processes in the infected cells...
April 3, 2017: Virology Journal
https://www.readbyqxmd.com/read/28365838/n-p-coumaroyl-serotonin-inhibits-glioblastoma-cells-growth-through-triggering-s-phase-arrest-and-apoptosis
#7
Diamanto Lazari, George A Alexiou, Georgios S Markopoulos, Evrysthenis Vartholomatos, Entela Hodaj, Ieremias Chousidis, Ioannis Leonardos, Vasiliki Galani, Athanasios P Kyritsis
Glioblastoma is the most common and most malignant primary brain tumor with a median survival of 15 months. N-(p-coumaroyl) serotonin (CS) is an indole alkaloid with antioxidant, cardioprotective effects after ischemia and antitumor activity. In the present study we sought to determine whether could exert cytotoxic and cytostatic effects in glioma cells in vitro. CS was tested for toxicity in zebrafish. We investigated the effect of CS in U251MG and T98G glioblastoma cell lines. Viability and proliferation of the cells were examined with trypan blue exclusion assay and the xCELLigence system...
April 1, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28321976/a-5-color-flow-cytometric-method-for-extended-8-part-leukocyte-differential
#8
Julien Guy, Orianne Wagner-Ballon, Olivier Pages, François Bailly, Jessica Borgeot, Marie-C Béné, Marc Maynadié
OBJECTIVES: Microscopic leukocyte differentials display many drawbacks. Several single 5 to 8-color tubes using multiparameter flow cytometry (MFC) are able to provide extended differentials with sequential gating-based analysis strategies. We investigated a new 5-color MFC method to perform an extended 8-part differential with a simplified gating strategy. METHODS: Whole blood was stained with a combination of antibodies including HLA-DR-FITC/CD19-PE/CD45-ECD/CD16-PC5+CD71-PC5/CD5-PC7...
March 21, 2017: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/28288151/pentoxifylline-modulates-lps-induced-hyperinflammation-in-monocytes-of-preterm-infants-in-vitro
#9
Simone S Schüller, Lukas Wisgrill, Elisabeth Herndl, Andreas Spittler, Elisabeth Förster-Waldl, Kambis Sadeghi, Boris W Kramer, Angelika Berger
BACKGROUND: Pentoxifylline (PTX), a methylxanthine derivate with immunomodulating properties, has been used as adjunctive treatment in severe neonatal sepsis. The aim of the study was to investigate PTX's anti-inflammatory effects on LPS stimulated monocytes of preterm neonates in vitro compared to monocytes from term infants and adult controls. METHODS: Whole cord blood and control adult blood samples were incubated with LPS and PTX. The expression of surface markers, phagocytosis, cytokine secretion and Toll-like-receptor (TLR)4 signaling of monocytes were assessed by flow cytometry...
March 13, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28284665/cryopreservation-and-multipotential-characteristics-evaluation-of-a-novel-type-of-mesenchymal-stem-cells-derived-from-small-tailed-han-sheep-fetal-lung-tissue
#10
Caiyun Ma, Changqing Liu, Xiangchen Li, Taofeng Lu, Chunyu Bai, Yanan Fan, Weijun Guan, Yu Guo
Lung mesenchymal stem cells (L-MSCs) characterized by plasticity, reduced relative immune privilege and high anti-fibrosis characteristics play the crucial role in lung tissue regenerative processes. However, up to date, the multi-differentiation potentials and application values of L-MSCs are still uncertain. In the current study, the Small Tailed Han Sheep embryo L-MSCs line from 12 samples, stocking 124 cryogenically-preserved vials, was successfully established by using primary culture and cell cryopreservation techniques...
April 2017: Cryobiology
https://www.readbyqxmd.com/read/28245371/-expression-of-cd146-in-adult-and-children-s-acute-b-cell-lymphoblastic-leukemia-and-its-significance
#11
Xiao-Qing Xie, Wei-Min Wang, Si-Lin Gan, Sheng-Mei Chen, Qiu-Tang Zhang, Xin-Sheng Xie, Yan-Fang Liu, Yuan-Dong Cheng, Yu-Feng Liu, Xue-Ju Xu, Hui Sun
OBJECTIVE: To explore the differences of CD146 expression in adult and children's acute B cell lymphoblastic leukemia(B-ALL), and its relation with clinical features, molecular biological and cytogenctic claracteristics. METHODS: The expression of CD146 in bone marrow samples from adult and children's B-ALL patients were detected by flow cytometry (FCM) and the relation of CD146 abnormal high expression with the patients' clinical features, molecular biological and cytogenetical characteristics, as well as other antigens were analyzed...
February 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28239788/expression-of-surface-molecules-in-human-mesenchymal-stromal-cells-co-cultured-with-nucleated-umbilical-cord-blood-cells
#12
Yu A Romanov, E E Balashova, N E Volgina, N V Kabaeva, T N Dugina, G T Sukhikh
We studied the expression of different classes of surface molecules (CD13, CD29, CD40, CD44, CD54, CD71, CD73, CD80, CD86, CD90, CD105, CD106, CD146, HLA-I, and HLA-DR) in mesenchymal stromal cells from human umbilical cord and bone marrow during co-culturing with nucleated umbilical cord blood cells. Expression of the majority of surface markers in both types of mesenchymal stromal cells was stable and did not depend on the presence of the blood cells. Significant differences were found only for cell adhesion molecules CD54 (ICAM-1) and CD106 (VCAM-1) responsible for direct cell-cell contacts with leukocytes and only for bone marrow derived cells...
February 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28165036/the-promotion-of-erythropoiesis-via-the-regulation-of-reactive-oxygen-species-by-lactic-acid
#13
Shun-Tao Luo, Dong-Mei Zhang, Qing Qin, Lian Lu, Min Luo, Fu-Chun Guo, Hua-Shan Shi, Li Jiang, Bin Shao, Meng Li, Han-Shuo Yang, Yu-Quan Wei
The simultaneous increases in blood lactic acid and erythrocytes after intense exercise could suggest a link between lactate and the erythropoiesis. However, the effects of lactic acid on erythropoiesis remain to be elucidated. Here, we utilized a mouse model to determine the role of lactic acid in this process in parallel with studies using leukaemic K562 cells. Treatment of K562 cells in vitro with lactic acid increased the mRNA and protein expression of haemoglobin genes and the frequency of GPA(+) cells...
February 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28134816/%C3%AE-6-integrin-%C3%AE-6-high-transferrin-receptor-cd71-low-keratinocyte-stem-cells-are-more-potent-for-generating-reconstructed-skin-epidermis-than-rapid-adherent-cells
#14
Elodie Metral, Nicolas Bechetoille, Frédéric Demarne, Walid Rachidi, Odile Damour
The epidermis basal layer is composed of two keratinocyte populations: Keratinocyte Stem cells (KSC) and Transitory Amplifying (TA) cells that arise from KSC division. Unfortunately, no specific marker exists to differ between KSC and TA cells. Here, we aimed at comparing two different methods that pretended to isolate these two populations: (i) the rapid adhesion method on coated substrate and (ii) the flow cytometry method, which is based on the difference in cell surface expressions of the α6 integrin and transferrin receptor (CD71)...
January 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28069109/immunomodulatory-effects-of-bone-marrow-mesenchymal-stem-cells-overexpressing-heme-oxygenase-1-protective-effects-on-acute-rejection-following-reduced-size-liver-transplantation-in-a-rat-model
#15
Zhong-Yang Shen, Bin Wu, Tao Liu, Yang Yang, Ming-Li Yin, Wei-Ping Zheng, Bo-Ya Zhang, Hong-Li Song
Here we explore the T-lymphocyte suppressive and immunomodulatory effects of bone marrow mesenchymal stem cells (BMMSCs) overexpressing heme oxygenase-1 (HO-1) on acute rejection following reduced-size liver transplantation (RLT) in a rat model. The proliferation activity, cell cycle progression, secretion of proinflammatory cytokines, expression of CD25 and CD71 in lymphocytes, and activity of NK cells were found to be significantly lowered, and the proportion of regulatory T cells (Tregs) was found to be increased relative to BMMSCs when Adv-HO-1/BMMSCs were co-cultured with Con A ex vivo; secretion of anti-inflammatory cytokines was significantly higher...
March 2017: Cellular Immunology
https://www.readbyqxmd.com/read/28068330/loss-of-p53-induces-leukemic-transformation-in-a-murine-model-of-jak2-v617f-driven-polycythemia-vera
#16
T Tsuruta-Kishino, J Koya, K Kataoka, K Narukawa, Y Sumitomo, H Kobayashi, T Sato, M Kurokawa
As leukemic transformation of myeloproliferative neoplasms (MPNs) worsens the clinical outcome, reducing the inherent risk of the critical event in MPN cases could be beneficial. Among genetic alterations concerning the transformation, the frequent one is TP53 mutation. Here we show that retroviral overexpression of Jak2 V617F mutant into wild-type p53 murine bone marrow cells induced polycythemia vera (PV) in the recipient mice, whereas Jak2 V617F-transduced p53-null mice developed lethal leukemia after the preceding PV phase...
January 9, 2017: Oncogene
https://www.readbyqxmd.com/read/28062363/governing-roles-for-trib3-pseudokinase-during-stress-erythropoiesis
#17
Arvind Dev, Ruth Asch, Edward Jachimowicz, Nicole Rainville, Ashley Johnson, Emily Greenfest-Allen, Don M Wojchowski
In response to anemia, the heightened production of erythropoietin (EPO) can sharply promote erythroid progenitor cell (EPC) formation. Specific mediators of such EPO- accelerated erythropoiesis, however, are not well understood. Presently, we first report that the expression of Trib3 in adult bone marrow EPCs in vivo is nominal at steady state, but strongly activated on EPO challenge. In a knockout mouse model, Trib3 disruption modestly increased steady-state erythrocyte numbers and decreased mean corpuscular volume...
May 2017: Experimental Hematology
https://www.readbyqxmd.com/read/27974744/notch-regulates-th17-differentiation-and-controls-trafficking-of-il-17-and-metabolic-regulators-within-th17-cells-in-a-context-dependent-manner
#18
Manuel Coutaz, Benjamin P Hurrell, Floriane Auderset, Haiping Wang, Stefanie Siegert, Gerard Eberl, Ping-Chih Ho, Freddy Radtke, Fabienne Tacchini-Cottier
Th17 cells play critical roles in host defense and autoimmunity. Emerging data support a role for Notch signaling in Th17 cell differentiation but whether it is a positive or negative regulator remains unclear. We report here that T cell-specific deletion of Notch receptors enhances Th17 cell differentiation in the gut, with a corresponding increase in IL-17 secretion. An increase in Th17 cell frequency was similarly observed following immunization of T cell specific Notch mutant mice with OVA/CFA. However, in this setting, Th17 cytokine secretion was impaired, and increased intracellular retention of IL-17 was observed...
December 15, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27931817/evaluation-of-the-pigret-assay-in-rats-by-single-oral-dosing-with-azidothymidine
#19
Hisakazu Sanada, Tomoka Ohsumi, Naomi Koyama, Taishi Miyashita, Kazuto Hashimoto
In vivo phosphatidylinositol glycan, class A (Pig-a) gene mutation assay using peripheral blood is known to be a novel and useful tool to evaluate the mutagenicity of compounds. Recently, the rat PIGRET assay which is an improved method for measuring Pig-a mutant cells in reticulocytes with magnetic enrichment of CD71 positive cells has been developed. Several reports showed that the PIGRET assay could detect the increase of Pig-a mutant frequency earlier than the Pig-a assay in total red blood cells (RBC Pig-a assay)...
November 15, 2016: Mutation Research
https://www.readbyqxmd.com/read/27931806/detection-of-pig-a-gene-mutants-in-rat-peripheral-blood-following-a-single-urethane-treatment-a-comparison-of-the-rbc-pig-a-and-pigret-assays
#20
Kazunori Narumi, Yohei Fujiishi, Emiko Okada, Wakako Ohyama
The rat red blood cell (RBC) Pig-a assay has been recommended by an expert working group of the International Workshop on Genotoxicity Testing as a potential new method to evaluate in vivo gene mutations in regulatory genotoxicity risk assessments. In a collaborative study in Japan, an improved Pig-a assay using reticulocytes (PIGRET assay) with magnetic enrichment of CD71-positive cells was evaluated, and it was revealed that this assay could detect the mutagenicity of chemicals earlier than the RBC Pig-a assay could...
November 15, 2016: Mutation Research
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