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lymphoblastic acute leukemia

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https://www.readbyqxmd.com/read/28550450/abcc4-functional-snp-in-the-3-splice-acceptor-site-of-exon-8-g912t-is-associated-with-unfavorable-clinical-outcome-in-children-with-acute-lymphoblastic-leukemia
#1
Hamzeh Mesrian Tanha, Soheila Rahgozar, Marjan Mojtabavi Naeini
OBJECTIVES: ATP-binding cassette subfamily C member 4 (ABCC4) encoding MRP4 protein is involved in pediatric acute lymphoblastic leukemia (ALL) drug resistance. The nonsynonymous single nucleotide polymorphism (SNP) rs2274407 (G912T; K304N) is located in the 3' splice acceptor site of exon 8 of ABCC4 pre-mRNA. The aim of this study was to investigate the prognostic value of rs2274407 in childhood ALL and its possible functional effect on MRP4. METHODS: ABCC4 G912T SNP was genotyped in 145 Iranian Philadelphia-negative (Ph(-)) children with ALL using modified tetra-primer ARMS PCR and evaluated for possible association with 3-year disease-free survival (3DFS)...
May 26, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28550041/central-nervous-system-involvement-in-acute-lymphoblastic-leukemia-is-mediated-by-vascular-endothelial-growth-factor
#2
Vera Münch, Luca Trentin, Julia Herzig, Salih Demir, Felix Seyfried, Johann M Kraus, Hans A Kestler, Rolf Köhler, Thomas F E Barth, Geertruy Te Kronnie, Klaus-Michael Debatin, Lüder H Meyer
In acute lymphoblastic leukemia (ALL), central nervous system (CNS) involvement is a major clinical concern. Despite non-detectable CNS leukemia in many cases, prophylactic CNS-directed conventional intrathecal chemotherapy is required for relapse free survival indicating subclinical CNS manifestation in most patients. However, CNS-directed therapy is associated with long-term sequelae including neurocognitive deficits and secondary neoplasms. Therefore, molecular mechanisms and pathways mediating leukemia cell entry into the CNS need to be understood in order to identify targets for prophylactic and therapeutic interventions and develop alternative CNS-directed treatment strategies...
May 26, 2017: Blood
https://www.readbyqxmd.com/read/28549385/identification-and-imaging-of-leukemia-cells-using-dual-aptamer-functionalized-graphene-oxide-complex
#3
Amirhossein Bahreyni, Rezvan Yazdian-Robati, Mohammad Ramezani, Mehdi Rasouli, Morteza Alinezhad Nameghi, Mona Alibolandi, Khalil Abnous, Seyed Mohammad Taghdisi
Acute lymphoblastic leukemia is the most common malignancy in children. Patient improvement completely depends on the diagnosis of acute lymphoblastic leukemia. So there is a great demand for diagnosis of acute lymphoblastic leukemia. In this study, a novel assay based on dual-aptamer (Sgc8c and ATP aptamers)-functionalized graphene oxide (DAFGO) complex was designed for the identification of Molt-4 cells (human acute lymphoblastic leukemia T-cell). This assay relies on the internalization of DAFGO complex into Molt-4 cells, but not into U266 cells, using Sgc8c aptamer as molecular recognition probe, and release of FAM-labeled ATP aptamer from the complex in the presence of high amounts of ATP in lysosome, leading to a strong fluorescence emission...
January 1, 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/28549237/haploidentical-allogeneic-hematopoietic-stem-cell-transplantation-compared-to-matched-unrelated-transplantation-for-philadelphia-chromosome-positive-acute-lymphoblastic-leukemia
#4
Bin Gu, Xiaojin Wu, Guanghua Chen, Xiao Ma, Zhengming Jin, Xiaowen Tang, Yue Han, Chengcheng Fu, Huiying Qiu, Aining Sun, Depei Wu
To investigate the effect of haploidentical allogeneic hematopoietic stem cell transplantation (Haplo-HCT) in Philadelphia chromosome-positive acute lymphoblastic leukemia (Ph+ ALL), the outcome of 58 patients with Ph+ ALL who received Haplo-HCT (n=42) or matched unrelated donor transplantation (MUD-HCT) (n=16) during the same period were analyzed retrospectively. All patients received a tyrosine kinase inhibitor (TKI)-based regimen before transplantation, and TKI was resumed primarily after transplantation...
May 16, 2017: Leukemia Research
https://www.readbyqxmd.com/read/28548878/immunophenotyping-of-the-cerebrospinal-fluid-as-a-prognostic-factor-at-diagnosis-of-acute-lymphoblastic-leukemia-in-children-and-adolescents
#5
Camila Silva Peres Cancela, Mitiko Murao, Juliana Godoy Assumpção, Marcelo Eduardo de Lima Souza, Antonio Vaz de Macedo, Marcos Borato Viana, Benigna Maria De Oliveira
This study aimed at evaluating the use of immunophenotyping (IMP) in the identification of blast cells in the cerebrospinal fluid (CSF) of children and adolescents with acute lymphoblastic leukemia (ALL). Sixty-seven patients aged 18 years or younger were included. Fifty-five CSF samples were analyzed at initial diagnosis and 17 at the time of relapse. A cytological analysis (CA) was performed in all 72 samples, while IMP was done in 63. Blasts were identified in only three samples by CA, whereas all three samples were found negative by IMP, one of which had no isolation of nucleated cells after centrifugation...
May 26, 2017: Pediatric Hematology and Oncology
https://www.readbyqxmd.com/read/28547950/increased-risk-of-thai-childhood-acute-lymphoblastic-leukemia-with-the-mir196a2-t-c-polymorphism
#6
Sarinthorn Rakmanee, Samart Pakakasama, Suradej Hongeng, Sirima Sanguansin, Acharawan Thongmee, Wanida Pongstaporn
Objectives: This study assessed associations of the miR196a2 (rs11614913) T>C polymorphism withsusceptibility to childhood acute lymphoblastic leukemia (ALL) and clinical outcomes. Materials and Methods: Blood DNA samples from 104 childhood ALL patients and 180 healthy children were studied for the miR-196a2 (rs11614913) polymorphism using a polymerase chain reaction-restriction fragment-length polymorphism (PCR-RFLP) approach. Results: The frequency of the miR-196a2 (rs11614913) T allele in controls was 0...
April 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28546582/control-of-amino-acid-transport-coordinates-metabolic-reprogramming-in-t-cell-malignancy
#7
K M Grzes, M Swamy, J L Hukelmann, E Emslie, L V Sinclair, D A Cantrell
This study explores the regulation and importance of System L amino acid transport in a murine model of T cell acute lymphoblastic leukemia (T-ALL) caused by deletion of phosphatase and tensin homologue deleted on chromosome 10 (PTEN). There has been a strong focus on glucose transport in leukemias but the present data show that primary T-ALL cells have increased transport of multiple nutrients. Specifically, increased leucine transport in T-ALL fuels mammalian target of rapamycin complex 1 (mTORC1) activity which then sustains expression of hypoxia inducible factor-1α (HIF1α) and c-Myc; drivers of glucose metabolism in T cells...
May 26, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28545980/altered-brain-function-in-new-onset-childhood-acute-lymphoblastic-leukemia-before-chemotherapy-a-resting-state-fmri-study
#8
Zhanqi Hu, Dongfang Zou, Huirong Mai, Xiuli Yuan, Lihong Wang, Yue Li, Jianxiang Liao, Liwei Liu, Guosheng Liu, Hongwu Zeng, Feiqiu Wen
OBJECTIVE: Cognitive impairments had been reported in childhood acute lymphoblastic leukemia, what caused the impairments needed to be demonstrated, chemotherapy-related or the disease itself. The primary aim of this exploratory investigation was to determine if there were changes in brain function of children with acute lymphoblastic leukemia before chemotherapy. METHODS: In this study, we advanced a measure named regional homogeneity to evaluate the resting-state brain activities, intelligence quotient test was performed at same time...
May 22, 2017: Brain & Development
https://www.readbyqxmd.com/read/28544751/constitutional-abnormalities-of-idh1-combined-with-secondary-mutations-predispose-a-patient-with-maffucci-syndrome-to-acute-lymphoblastic-leukemia
#9
Shinsuke Hirabayashi, Masafumi Seki, Daisuke Hasegawa, Motohiro Kato, Nobuyuki Hyakuna, Takuya Shuo, Shunsuke Kimura, Kenichi Yoshida, Keisuke Kataoka, Yoichi Fujii, Yuichi Shiraishi, Kenichi Chiba, Hiroko Tanaka, Nobutaka Kiyokawa, Satoru Miyano, Seishi Ogawa, Junko Takita, Atsushi Manabe
Maffucci syndrome is a nonhereditary disorder caused by somatic mosaic isocitrate dehydrogenase 1 or 2 (IDH1 or IDH2) mutations and is characterized by multiple enchondromas along with hemangiomas. Malignant transformation of enchondromas to chondrosarcomas and secondary neoplasms, such as brain tumors or acute myeloid leukemia, are serious complications. A 15-year-old female with Maffucci syndrome developed B-cell precursor acute lymphoblastic leukemia (BCP-ALL). A somatic mutation in IDH1 was detected in hemangioma and leukemic cells...
May 24, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28544358/the-expression-pattern-of-bcl11a-mdm2-and-pten-genes-in-b-cell-acute-lymphoblastic-leukemia
#10
Ling Xu, Hong Wu, Xiuli Wu, Yangqiu Li, Dongmei He
AIM: Bcl11a is closely associated with B-cell lymphoma and B-cell chronic lymphocytic leukemia. However, little is known about the expression character of Bcl11a gene in B-cell acute lymphoblastic leukemia (B-ALL). In previous study, our results showed there was a clear dysregulation in the global gene expression of the Bcl11a-suppressed B lymphoma cells. The aim of the study is to further evaluate the role of Bcl11a and the expression level of its related genes Mdm2, Pten in B-ALL patients...
May 24, 2017: Asia-Pacific Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28540857/an-unusual-case-of-acute-leukemia
#11
Carole Fleury, Marie Passet, Catherine Settegrana, Laurence Simon, Elise Chapiro, Amélie Trinquand, Ines Safra Zaghouani, Madalina Uzunov, Magali Le Garff-Tavernier, Marine Armand, Myrto Costopoulos
We report the case of a 31 year-old man diagnosed with an atypical acute leukemia difficult to characterize cytologically. The immunophenotyping identified a blastic population co-expressing myeloid, lymphoid B and lymphoid T markers suggesting the diagnosis of either a mixed phenotype acute leukemia (MPAL) or an early T-cell precursor acute lymphoblastic leukemia (ETP-ALL). Because of the poor prognosis linked to these leukemias, the patient benefited from chemotherapy targeting both myeloid and lymphoid components, followed by allogeneic hematopoietic stem cell transplantation...
June 1, 2017: Annales de Biologie Clinique
https://www.readbyqxmd.com/read/28539671/age-related-clinical-and-biological-features-of-pten-abnormalities-in-t-cell-acute-lymphoblastic-leukaemia
#12
M Tesio, A Trinquand, P Ballerini, G Hypolite, L Lhermitte, A Petit, N Ifrah, A Baruchel, H Dombret, E Macintyre, V Asnafi
The tumour suppressor gene PTEN is commonly altered in T-cell acute lymphoblastic leukaemia but its prognostic impact is still debated. We screened a cohort of 573 fully characterized adult and paediatric T-ALL patients for genomic PTEN abnormalities. PTEN inactivating mutations and/or deletions were identified in 91 cases (16%), including 18% of paediatric (49/277) and 14% of adult cases (42/296). Thirty-four patients harboured only mutations, 12 cases demonstrated only large deletions and 9 only micro-deletions...
May 25, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28538500/parental-perceptions-of-obesity-and-obesity-risk-associated-with-childhood-acute-lymphoblastic-leukemia
#13
Gary L Jones, Wendy McClellan, Sripriya Raman, Ashley Sherman, Erin Guest, Keith August
The prevalence of obesity and related comorbidities in survivors of childhood acute lymphoblastic leukemia (ALL) is well established and ranges anywhere from 29% to 69% depending on the study. We sought to explore the awareness of parents of survivors of childhood ALL regarding the increased risk of obesity and their perceptions regarding the overall health of their child. One hundred twenty-one parents of 99 survivors of pediatric ALL completed surveys regarding perceptions of obesity risk in survivors. Eighty percent of parents of overweight and obese survivors correctly identified their child as "a little overweight" or "overweight...
May 22, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28537804/evaluation-of-testing-of-acute-leukemia-samples-survey-result-from-the-college-of-american-pathologists
#14
Tracy I George, Joseph A Tworek, Nicole E Thomas, Lisa A Fatheree, Rhona J Souers, Raouf E Nakhleh, Daniel A Arber
CONTEXT: - The classification and prognosis determination in acute leukemia (AL) are complex and it is unclear what testing is being performed in practice. OBJECTIVE: - To survey physicians describing their current practice of test ordering in the diagnosis of AL. DESIGN: - In anticipation of a guideline by the College of American Pathologists (CAP) and the American Society for Hematology on laboratory testing needed for the initial workup of AL, a baseline survey was designed by an expert panel from CAP...
May 24, 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/28536953/rhoa-and-rhoc-are-involved-in-stromal-cell-derived-factor-1-induced-cell-migration-by-regulating-f-actin-redistribution-and-assembly
#15
Jixian Luo, Dingyun Li, Dan Wei, Xiaoguang Wang, Lan Wang, Xianlu Zeng
Stromal cell-derived factor-1 (SDF-1) signaling is important to the maintenance and progression of T-cell acute lymphoblastic leukemia by inducing chemotaxis migration. To identify the mechanism of SDF-1 signaling in the migration of T-ALL, Jurkat acute lymphoblastic leukemia cells were used. Results showed that SDF-1 induces Jurkat cell migration by F-actin redistribution and assembly, which is dependent on Rho activity. SDF-1 induced RhoA and RhoC activation, as well as reactive oxygen species (ROS) production, which was inhibited by Rho inhibitor...
May 23, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28536334/-iii-acute-lymphoblastic-leukemia
#16
Kiyotoshi Imai
No abstract text is available yet for this article.
May 2017: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28535805/first-case-of-b-all-with-kmt2a-maml2-rearrangement-a-case-report
#17
Estelle Menu, Nathalie Beaufils, Fabrice Usseglio, Estelle Balducci, Marina Lafage Pochitaloff, Regis Costello, Jean Gabert
BACKGROUND: A large number of chromosomal translocations of the human KMT2A gene, better known as the MLL gene, have so far been characterized. Genetic rearrangements involving KMT2A gene are frequently involved in lymphoid, myeloid and mixed lineage leukemia. One of its rare fusion partners, the mastermind like 2 (MAML2) gene has been reported in four cases of myeloid neoplasms after chemotherapy so far: two acute myeloid leukemias (AML) and two myelodysplasic syndrome (MDS), and two cases of secondary T-cell acute lymphoblastic leukemia (T-ALL)...
May 23, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28535095/managing-cns-disease-in-adults-with-acute-lymphoblastic-leukemia
#18
Richard A Larson
The central nervous system (CNS) is an important site of involvement by acute lymphoblastic leukemia (ALL) in adults. The prevalence is sufficiently high that prophylactic treatment is routinely given to this sanctuary site in order to eradicate occult disease that might otherwise lead to a relapse. A lumbar puncture should be routinely performed in all newly diagnosed patients with ALL. The risks of CNS leukemia vary by phenotype and genotype. Preventive treatment of the CNS during post-remission therapy has become an integral part of all current ALL treatment protocols...
May 23, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28535084/impact-of-initial-csf-findings-on-outcome-among-patients-with-national-cancer-institute-standard-and-high-risk-b-cell-acute-lymphoblastic-leukemia-a-report-from-the-children-s-oncology-group
#19
Naomi Winick, Meenakshi Devidas, Si Chen, Kelly Maloney, Eric Larsen, Leonard Mattano, Michael J Borowitz, Andrew Carroll, Julie M Gastier-Foster, Nyla A Heerema, Cheryl Willman, Brent Wood, Mignon L Loh, Elizabeth Raetz, Stephen P Hunger, William L Carroll
Purpose To determine the prognostic significance of blasts, and of white and red blood cells, in CSF samples at diagnosis of acute lymphoblastic leukemia (ALL), a uniform CSF and risk group classification schema was incorporated into Children's Oncology Group B-cell ALL (B-ALL) clinical trials. Methods CSF status was designated as follows: CNS1, no blasts; CNS2a to 2c, < 5 WBCs/μL and blasts with/without ≥ 10 RBCs/μL or ≥ 5 WBCs/μL plus blasts, with WBCs ≥ 5 times the number of RBCs; CNS3a to 3c, ≥ 5 WBCs/μL plus blasts with/without ≥ 10 RBCs/μL or clinical signs of CNS disease...
May 23, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28534526/impact-of-genetic-polymorphisms-determining-leukocyte-neutrophil-count-on-chemotherapy-toxicity
#20
S J Glisovic, Y D Pastore, V Gagne, M Plesa, C Laverdière, J M Leclerc, D Sinnett, M Krajinovic
Neutropenia and infection are major dose-limiting side effects of chemotherapy. The risk of initial infection and subsequent complications are directly related to the depth and duration of neutropenia. Recent genome-wide association studies identified variants in DARC and CXCL2 genes, and in ORMDL3-GSDMA-CSF3 locus on chromosome 17q21 that influence white blood cell and neutrophil counts in healthy individuals. To investigate whether polymorphisms in these loci in conjunction with chemotherapy may modulate risk of treatment complications, we analyzed 21 SNPs across these genes for an association with chemotherapy-related neutropenia and infection in 286 Caucasian children with acute lymphoblastic leukemia...
May 23, 2017: Pharmacogenomics Journal
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