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Acute myeloblastic leukemia

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https://www.readbyqxmd.com/read/29102598/dicer1-gene-and-mirna-dysregulation-in-mesenchymal-stem-cells-of-patients-with-myelodysplastic-syndrome-and-acute-myeloblastic-leukemia
#1
Hakan Ozdogan, Bala Gur Dedeoglu, Yasemin Oztemur Islakoglu, Alp Aydos, Sevil Kose, Arzu Atalay, Zeynep Arzu Yegin, Ferit Avcu, Duygu Ocean Cetinkaya, Osman Ilhan
Multipotent mesenchymal stem cells (MSC) are key components of the bone marrow (BM) microenvironment. The contribution of this microenvironment to the pathophysiology of myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML) is not well defined. A recent study in mice demonstrated that DICER1 gene deletion in osteoprogenitor cells from the BM microenvironment suppressed osteogenic differentiation and induced MDS and AML-like haematological findings. The present study evaluated the expression profiles of microRNAs (miRNAs) and DICER1 gene in BM-derived MSC of patients with AML (n=12), MDS (n=10) and healthy controls (HC) (n=8)...
October 31, 2017: Leukemia Research
https://www.readbyqxmd.com/read/29061820/comparison-of-in-vitro-antileukemic-activity-of-4-hydroperoxyifosfamide-and-4-hydroperoxycyclophosphamide
#2
COMPARATIVE STUDY
Malgorzata Opydo-Chanek, Katarzyna Śladowska, Kamil Blicharski, Jaromir Mikeš, Peter Fedoročko, Ulf Niemeyer, Lidia Mazur
BACKGROUND/AIM: The oxazaphosphorines, ifosfamide and cyclophosphamide, represent a class of alkylating agents. The aim of the present in vitro study was to compare antileukemic activity of 4-hydroperoxyifosfamide (4-OOH-IF) and 4-hydroperoxycyclophosphamide (4-OOH-CP). MATERIALS AND METHODS: The experiments were performed on MOLT-4 and ML-1 cells. The research was conducted using flow cytometry fluorescein diacetate/propidium iodide (PI), fluorescein-conjugated annexin V/PI, CaspGLOW Red Active Caspase-8 and -9, CellEvent™ Caspase-3/7 Green assays, and tetramethylrhodamine ethyl ester test...
November 2017: Anticancer Research
https://www.readbyqxmd.com/read/28975064/neuroleukemiosis-two-case-reports
#3
Vlad Voin, Shehzad Khalid, Sebastian Shrager, R Shane Tubbs, Robert Greiner, Krishnamoorthy Thamburaj, Elias Rizk
Extramedullary tumors composed of myeloblasts or monoblasts can present in various locations. Patients with a history of acute myeloid leukemia (AML) can present with neuropathic pain and no evidence of relapse of their leukemia. Neuroleukemiosis is a form of extramedullary tumor present in the peripheral nervous systems (PNS) of leukemia patients. We report two AML patients who were in remission and later presented with neurological symptoms due to neuroleukemiosis with negative bone marrow biopsies.
July 31, 2017: Curēus
https://www.readbyqxmd.com/read/28945224/rarf-confers-ra-resistance-by-sequestering-rar-to-the-nucleolus-and-regulating-mcl1-in-leukemia-cells
#4
H Youn, H-K Lee, H-R Sohn, U-H Park, E-J Kim, B Youn, S-J Um
Retinoic acid (RA) has broad clinical applications for the treatment of various cancers, particularly acute promyelocytic leukemia. However, RA-based therapy is limited by relapse in patients associated with RA resistance, the mechanism of which is poorly understood. Here, we suggest a new molecular mechanism of RA resistance by a repressor, named RA resistance factor (RaRF). RaRF suppressed transcriptional activity of the RA receptor (RAR) by directly interacting with and sequestering RAR to the nucleolus in response to RA...
September 25, 2017: Oncogene
https://www.readbyqxmd.com/read/28927153/clinicoradiological-characteristics-management-and-prognosis-of-primary-myeloid-sarcoma-of-the-central-nervous-system-a-report-of-four-cases
#5
Bao Yang, Chenlong Yang, Jingyi Fang, Jun Yang, Yulun Xu
Myeloid sarcoma (MS) is a localized tumor composed of premature precursors of granulocytic cells, which may occur in any organ and most commonly involves the soft tissue and musculoskeletal system. This malignancy may occur in the presence or absence of hematological disorders. Primary MS involving the central nervous system (CNS-MS) is rare, and has only been described in a small number of isolated case reports. The diagnosis of CNS-MS is challenging and strategies for its management are undefined. The present study describes 4 cases of CNS-MS...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28885352/successful-5-azacytidine-treatment-of-myeloid-sarcoma-and-leukemia-cutis-associated-with-myelodysplastic-syndrome-a-case-report-and-literature-review
#6
REVIEW
Takayuki Katagiri, Takashi Ushiki, Masayoshi Masuko, Tomoyuki Tanaka, Shukuko Miyakoshi, Kyoko Fuse, Yasuhiko Shibasaki, Jun Takizawa, Sadao Aoki, Hirohito Sone
RATIONALE: Myeloid sarcoma (MS) and leukemia cutis (LC) are extramedullary tumors comprising myeloid blasts. They can occur de novo or concurrently with hematological disorders, usually acute myeloid leukemia (AML). AML chemotherapy is generally the initial therapy for MS and LC, and hematopoietic stem cell transplantation (HSCT) can be considered as additional therapy. However, treatment for older patients who are unable to continue intensive chemotherapy is not currently standardized...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28860210/safety-and-persistence-of-wt1-specific-t-cell-receptor-gene-transduced-lymphocytes-in-patients-with-aml-and-mds
#7
Isao Tawara, Shinichi Kageyama, Yoshihiro Miyahara, Hiroshi Fujiwara, Tetsuya Nishida, Yoshiki Akatsuka, Hiroaki Ikeda, Kazushi Tanimoto, Seitaro Terakura, Makoto Murata, Yoko Inaguma, Masahiro Masuya, Naoki Inoue, Tomohide Kidokoro, Sachiko Okamoto, Daisuke Tomura, Hideto Chono, Ikuei Nukaya, Junichi Mineno, Tomoki Naoe, Nobuhiko Emi, Masaki Yasukawa, Naoyuki Katayama, Hiroshi Shiku
WT1 is constantly expressed in leukemic cells of acute leukemia and myelodysplastic syndrome (MDS). A T-cell receptor (TCR) that specifically reacts with WT1 peptide in the context of HLA-A*24:02 has been identified. We conducted a first-in human trial of TCR-gene transduced T cell (TCR-T cell) transfer in patients with refractory acute myeloblastic leukemia (AML) and high-risk MDS to investigate the safety and cell kinetics of the T cells. The WT1-specific TCR-gene was transduced to T cells using a retroviral vector encoding siRNAs for endogenous TCR genes...
August 31, 2017: Blood
https://www.readbyqxmd.com/read/28800701/a-new-indole-derivative-decreased-sall4-gene-expression-in-acute-promyelocytic-leukemia-cell-line-nb4
#8
Zahra Sheikhrezaei, Parisa Heydari, Alireza Farsinezhad, Ahmad Fatemi, Soudeh Khanamani Falahati-Pour, Shokoofeh Darakhshan, Mojgan Noroozi Karimabad, Ali Darekordi, Hossein Khorramdelazad, Gholamhossein Hassanshahi
Background: Acute myeloblastic leukemia (AML) is a clonal disorder due to bone marrow failure and uncontrolled proliferation of myeloid lineage. Acute promyelocytic leukemia (APL) is a subtype of AML. Heterocyclic compounds, such as indole, are considered as attractive candidates for cancer therapy, due to their abundance in nature and known biological activity. Sal-like protein (SALL4) is a zinc finger transcription factor involving in the multi-potency of stem cells, in the NB4 cell line...
August 12, 2017: Iranian Biomedical Journal
https://www.readbyqxmd.com/read/28793875/an-analysis-of-97-previously-diagnosed-de-novo-adult-acute-erythroid-leukemia-patients-following-the-2016-revision-to-world-health-organization-classification
#9
Shaowei Qiu, Erlie Jiang, Hui Wei, Dong Lin, Guangji Zhang, Shuning Wei, Chunlin Zhou, Kaiqi Liu, Ying Wang, Bingcheng Liu, Yuntao Liu, Benfa Gong, Xiaoyuan Gong, Sizhou Feng, Yingchang Mi, Mingzhe Han, Jianxiang Wang
BACKGROUND: The incidence of acute erythroid leukemia subtype (AEL) is rare, accounting for 5% of cases of acute myeloid leukemia (AML), and the outcome is dismal. However, in 2016 revision to the WHO classification, the subcategory of AEL has been removed. Myeloblasts are redefined as the percentage of total marrow cells, not non-erythroid cells. Therefore, the previously diagnosed AEL cases are currently diagnosed as AML or myelodyspalstic syndrome (MDS) according to new criteria. METHODS: We respectively reviewed cases of 97 de novo previously diagnosed AEL and all the patients were diagnosed as AML or MDS according to the new classification scheme, and then the clinical characteristics of these two subtypes were compared...
August 9, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28731917/the-impact-of-iron-overload-in-acute-leukemia-chronic-inflammation-but-not-the-presence-of-nontransferrin-bound-iron-is-a-determinant-of-oxidative-stress
#10
Lale Olcay, Mustafa Serteser, Murat Kolay, Havva F Balci, Ülkü M Yildirim, Sibel A Tekgündüz, Tuncay Hazirolan, Yunus K Terzi
In the literature, studies on the oxidant effects of nontransferrin bound iron [NTBI (eLPI assay)] during chemotherapy of acute lymphoblastic leukemia and acute myeloblastic leukemia are lacking. We established NTBI and oxidative stress determinants (OSD), iron parameters, high-sensitive C-reactive protein (hs-CRP) levels, liver tests, cumulative chemotherapeutic doses, and transfused blood in 36 children with acute leukemia throughout chemotherapy. These parameters were determined at the beginning and end of chemotherapy blocks (11 time points) and in 20 healthy children using enzyme-linked immunosorbent assay, and colorimetric and fluorometric enzymatic methods...
August 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28666906/craniospinal-irradiation-prior-to-stem-cell-transplant-for-hematologic-malignancies-with-cns-involvement-effectiveness-and-toxicity-after-photon-or-proton-treatment
#11
Jillian R Gunther, Ahmad R Rahman, Wenli Dong, Zeinab Abou Yehia, Partow Kebriaei, Gabriela Rondon, Chelsea C Pinnix, Sarah A Milgrom, Pamela K Allen, Bouthaina S Dabaja, Grace L Smith
PURPOSE/OBJECTIVE(S): Craniospinal irradiation (CSI) improves local control of leukemia/lymphoma with central nervous system (CNS) involvement; however, for adult patients anticipating stem cell transplant (SCT), cumulative treatment toxicity is a major concern. We evaluated toxicities and outcomes for patients receiving proton or photon CSI before SCT. METHODS AND MATERIALS: We identified 37 consecutive leukemia/lymphoma patients with CNS involvement who received CSI before SCT at our institution...
May 10, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28659335/bone-marrow-pathologic-abnormalities-in-familial-platelet-disorder-with-propensity-for-myeloid-malignancy-and-germline-runx1-mutation
#12
Rashmi Kanagal-Shamanna, Sanam Loghavi, Courtney D DiNardo, L Jeffrey Medeiros, Guillermo Garcia-Manero, Elias Jabbour, Mark J Routbort, Rajyalakshmi Luthra, Carlos E Bueso-Ramos, Joseph D Khoury
A subset of patients with familial platelet disorder with propensity to myeloid malignancy and germline RUNX1 mutation develops hematological malignancies, often myelodysplastic syndrome/acute myeloid leukemia, currently recognized in the 2016 WHO classification. Patients who develop hematologic malignancies are typically young, respond poorly to conventional therapy, and need allogeneic stem cell transplant from non-familial donors. Understanding the spectrum of bone marrow morphologic and genetic findings in these patients is critical to ensure diagnostic accuracy and develop criteria to recognize the onset of hematologic malignancies, particularly myelodysplastic syndrome...
October 2017: Haematologica
https://www.readbyqxmd.com/read/28658145/central-hypothyroidism-in-a-pediatric-case-of-primary-acute-monoblastic-leukemia-with-central-nervous-system-infiltration-a-case-report
#13
Yuya Sato, Satomi Koyama, Shigeko Kuwashima, Masaya Kato, Mayuko Okuya, Keitaro Fukushima, Hidemitsu Kurosawa, Osamu Arisaka
RATIONALE: Central nervous system (CNS) leukemia is a frequent diagnosis in pediatric acute myeloblastic leukemia (AML) and includes neural symptoms. However, CNS leukemia is rarely associated with central hypsothyroidism. PATIENT CONCERNS AND DIAGNOSES: A 2-year-old female with AML with MLL rearrangement presented with CNS infiltration. Laboratory tests suggested the presence of central hypothyroidism (thyroid-stimulating hormone [TSH]: 0.48 mIU/ml, normal range 0...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28613286/geographical-distribution-and-cluster-detection-of-childhood-leukemia-in-the-metropolitan-area-of-guadalajara-mexico
#14
Alberto Tlacuilo-Parra, Roberto Garibaldi-Covarrubias, Hugo Romo-Rubio, Leonardo Soto-Sumuano, Carlos Fernando Ruiz-Chávez, Mijail Suárez-Arredondo, Fernando Sánchez-Zubieta, Sergio Gallegos-Castorena
BACKGROUND: Acute leukemia is the most common cancer in childhood. Analyzing the spatial distribution of acute leukemia may generate the identification of risk factors. OBJECTIVE: To study the incidence rate of acute leukemia, its geographic distribution, and cluster detection in the metropolitan area of Guadalajara, Mexico. METHODS: We included children under 15 years of age diagnosed with acute leukemia during the period 2010-2014 in the metropolitan area of Guadalajara...
May 2017: Revista de Investigación Clínica; Organo del Hospital de Enfermedades de la Nutrición
https://www.readbyqxmd.com/read/28588020/enasidenib-in-mutant-idh2-relapsed-or-refractory-acute-myeloid-leukemia
#15
Eytan M Stein, Courtney D DiNardo, Daniel A Pollyea, Amir T Fathi, Gail J Roboz, Jessica K Altman, Richard M Stone, Daniel J DeAngelo, Ross L Levine, Ian W Flinn, Hagop M Kantarjian, Robert Collins, Manish R Patel, Arthur E Frankel, Anthony Stein, Mikkael A Sekeres, Ronan T Swords, Bruno C Medeiros, Christophe Willekens, Paresh Vyas, Alessandra Tosolini, Qiang Xu, Robert D Knight, Katharine E Yen, Sam Agresta, Stephane de Botton, Martin S Tallman
Recurrent mutations in isocitrate dehydrogenase 2 (IDH2) occur in ∼12% of patients with acute myeloid leukemia (AML). Mutated IDH2 proteins neomorphically synthesize 2-hydroxyglutarate resulting in DNA and histone hypermethylation, which leads to blocked cellular differentiation. Enasidenib (AG-221/CC-90007) is a first-in-class, oral, selective inhibitor of mutant-IDH2 enzymes. This first-in-human phase 1/2 study assessed the maximum tolerated dose (MTD), pharmacokinetic and pharmacodynamic profiles, safety, and clinical activity of enasidenib in patients with mutant-IDH2 advanced myeloid malignancies...
August 10, 2017: Blood
https://www.readbyqxmd.com/read/28569009/myeloid-sarcoma-identified-on-liquid-based-cervical-cytology-samples-a-report-of-two-cases
#16
Jessica S Snider, Yekaterina Eichel, Alisa M Caudell, Olga S Chajewski, Jack Yang, Kathryn G Lindsey
The purpose of the Papanicolaou (Pap) smear is to detect primary squamous lesions of the uterine cervix. Although most successful at detection of squamous lesions, the Pap may also detect metastatic carcinomas, sarcomas, and melanomas. We report two rare cases of myeloid sarcoma (MS) of the uterine cervix identified on screening Pap smears with concurrent confirmatory cervical biopsies. The purpose of our study is to identify and report cytologic features of MS on Pap smears utilizing a liquid-based ThinPrep method, which has not been previously documented in literature...
May 31, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28567073/quantitative-assessment-of-wilms-tumor-1-expression-by-real-time-quantitative-polymerase-chain-reaction-in-patients-with-acute-myeloblastic-leukemia
#17
Hossein Ayatollahi, Mohammad Hadi Sadeghian, Mahmood Naderi, Amir Hossein Jafarian, Seyyede Fatemeh Shams, Neda Motamedirad, Maryam Sheikhi, Afsane Bahrami, Sepideh Shakeri
BACKGROUND: The Wilms tumor 1 (WT1) gene is originally defined as a tumor suppressor gene and a transcription factor that overexpressed in leukemic cells. It is highly expressed in more than 80% of acute myeloid leukemia (AML) patients, both in bone marrow (BM) and in peripheral blood (PB), and it is used as a powerful and independent marker of minimal residual disease (MRD); we have determined the expression levels of the WT1 by real-time quantitative polymerase chain reaction (RQ-PCR) in PB and BM in 126 newly diagnosed AML patients...
2017: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/28459703/novel-cytogenetic-findings-in-a-case-of-mixed-phenotype-acute-leukemia-within-the-context-of-a-complex-karyotype
#18
David Shabsovich, Gary Schiller, Yalda Naeini, Robert Collins, Carlos A Tirado
BACKGROUND: Mixed phenotype acute leukemia (MPAL) is a rare hematological malignancy characterized by combinatorial aberrations involving cells of the myeloid, T-, and/or B- lineages, most often diagnosed by means of immunophenotyping in order to assess lineage-specific markers, which can still yield inconclusive diagnoses. MPAL with a complex karyotype (three or more chromosomal abnormalities) is a cytogenetic subtype of MPAL associated with a poor prognosis, but limited data is available about the cytogenetic abnormalities present in this context...
2017: Journal of the Association of Genetic Technologists
https://www.readbyqxmd.com/read/28451010/-acquired-amegacaryocytic-thrombocytopenic-purpura-hiding-acute-myeloid-leukemia
#19
Hicham Eddou, Ali Zinebi, Abdelaziz Khalloufi, Mohammed Sina, Mehdi Mahtat, Kamal Doghmi, Mohammed Mikdame, Mohammed Karim Moudden, Mohammed El Baaj
Acquired amegakaryocytic thrombocytopenic purpura is a very rare condition characterized by severe thrombocytopenia linked to the reduction or disappearance of megakaryocytes in the bone marrow. It may be primary idiopathic or secondary to many pathological conditions including hematologic disorders. We report the case of a 24-year-old patient admitted for haemorrhagic syndrome caused by immunological thrombocytopenic purpura. The diagnosis was acquired amegakaryocytosis after the failure of corticotherapy and the performance of myelography...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28428897/acute-myeloid-leukemia-with-basophilic-differentiation-transformed-from-myelodysplastic-syndrome
#20
Yasuhiro Tanaka, Atsushi Tanaka, Akiko Hashimoto, Kumiko Hayashi, Isaku Shinzato
Myelodysplastic syndrome (MDS) terminally transforms to acute myeloid leukemia (AML) or bone marrow failure syndrome, but acute myeloid leukemia with basophilic differentiation has been rarely reported. An 81-year-old man was referred to our department for further examination of intermittent fever and normocytic anemia during immunosuppressive treatment. Chromosomal analysis showed additional abnormalities involving chromosome 7. He was diagnosed as having MDS. At the time of diagnosis, basophils had not proliferated in the bone marrow...
2017: Case Reports in Hematology
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