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https://www.readbyqxmd.com/read/28934678/establishment-of-cell-line-with-nk-nkt-phenotype-from-myeloid-nk-cell-acute-leukemia
#1
A Darji, N Desai, R Modi, B Khamar, S Rajkumar
Acute Myeloid Leukemia (AML) is the most common malignancy in adults with a 5-year survival rate of 27% of the total affected population. For effective treatment and new drug discovery, cell lines are considered as a very important tool. Here we report an establishment of a continuous human cell line AML-004 with a hypo-diploid chromosome 44 and presence of both NK/NKT phenotypes. The cell line was isolated from the blood sample of myeloid NK cell acute leukemia patients and extensively characterized by flow cytometery, morphology, and cytogentic analysis...
September 13, 2017: Leukemia Research
https://www.readbyqxmd.com/read/28933777/generation-and-use-of-a-humanized-bone-marrow-ossicle-niche-for-hematopoietic-xenotransplantation-into-mice
#2
Andreas Reinisch, David Cruz Hernandez, Katharina Schallmoser, Ravindra Majeti
Xenotransplantation is frequently used to study normal and malignant hematopoiesis of human cells. However, conventional mouse xenotransplantation models lack essential human-specific bone-marrow (BM)-microenvironment-derived survival, proliferation, and self-renewal signals for engraftment of normal and malignant blood cells. As a consequence, many human leukemias and other hematologic disorders do not robustly engraft in these conventional models. Here, we describe a complete workflow for the generation of humanized ossicles with an accessible BM microenvironment that faithfully recapitulates normal BM niche morphology and function...
October 2017: Nature Protocols
https://www.readbyqxmd.com/read/28933735/clinical-outcomes-and-co-occurring-mutations-in-patients-with-runx1-mutated-acute-myeloid-leukemia
#3
Maliha Khan, Jorge Cortes, Tapan Kadia, Kiran Naqvi, Mark Brandt, Sherry Pierce, Keyur P Patel, Gautam Borthakur, Farhad Ravandi, Marina Konopleva, Steven Kornblau, Hagop Kantarjian, Kapil Bhalla, Courtney D DiNardo
(1) Runt-related transcription factor 1 (RUNX1) mutations in acute myeloid leukemia (AML) are often associated with worse prognosis. We assessed co-occurring mutations, response to therapy, and clinical outcomes in patients with and without mutant RUNX1 (mRUNX1); (2) We analyzed 328 AML patients, including 177 patients younger than 65 years who received intensive chemotherapy and 151 patients >65 years who received hypomethylating agents. RUNX1 and co-existing mutations were identified using next-generation sequencing; (3) RUNX1 mutations were identified in 5...
July 26, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28933186/gender-effects-in-a-multischool-alcohol-media-literacy-study-with-preadolescents
#4
Chloe S Gordon, Steven J Howard, Lisa K Kervin, Sandra C Jones
OBJECTIVE: Alcohol media literacy (AML) programs have achieved positive results for alcohol prevention; however, gender may moderate program effectiveness. This study investigated gender differences for an Australian AML intervention. METHOD: Fifth and sixth graders ( N = 165), allocated to an intervention or wait-list control group, participated in an AML program. Student questionnaires were administered at three time points. RESULTS: The intervention resulted in significantly higher media deconstruction skills but did not lead to less preference for branded merchandise or greater understanding of persuasive intent, and these effects did not differ by gender...
September 1, 2017: Health Education & Behavior: the Official Publication of the Society for Public Health Education
https://www.readbyqxmd.com/read/28932344/-a-pink-nodule-on-the-face
#5
Amina Kissou, Badredine Hassam
We report the case of a 32-year old female patient, with no notable medical history, requiring dermatology consultation for evaluation of a nodule on her right cheek which had evolved over the past 10 years. Clinical examination showed a reddish dermal-based nodule with a smooth surface. The lesion measured 1cm in diameter and was located at the level of the right cheek (A). There was no adenopathy and the remainder of the clinical examination was normal. The patient underwent skin biopsy which showed tumor proliferation composed of fusiform cells with poorly limited eosinophilic cytoplasm and lightly atypical elongated nuclei without mitosis and with mononuclear inflammatory cell infiltrate at the level of the dermis...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28931762/emerging-therapies-for-acute-myeloid-leukemia-translating-biology-into-the-clinic
#6
REVIEW
Simon Kavanagh, Tracy Murphy, Arjun Law, Dana Yehudai, Jenny M Ho, Steve Chan, Aaron D Schimmer
Acute myeloid leukemia (AML) is an aggressive hematological malignancy with a poor outcome; overall survival is approximately 35% at two years and some subgroups have a less than 5% two-year survival. Recently, significant improvements have been made in our understanding of AML biology and genetics. These fundamental discoveries are now being translated into new therapies for this disease. This review will discuss recent advances in AML biology and the emerging treatments that are arising from biological studies...
September 21, 2017: JCI Insight
https://www.readbyqxmd.com/read/28928996/immune-mediated-autonomic-neuropathies-following-allogeneic-stem-cell-transplantation-in-acute-myeloid-leukemia
#7
Abhishek Mangaonkar, Hassan Al Khateeb, Narjust Duma, Erik K St Louis, Andrew McKeon, Mrinal Patnaik, William Hogan, Mark Litzow, Taxiarchis Kourelis
BACKGROUND/AIMS: Autonomic dysfunction (AD) after allogeneic stem cell transplant (SCT) is a rare occurrence and likely immune-mediated in etiology. There is limited literature on this topic and hence, we wish to briefly describe management of two cases at our institution and their outcomes. METHODS: We retrospectively identified two patients with immune-mediated AD after SCT from our database. Immune-mediated AD was defined as AD secondary to an immune-mediated etiology without an alternative cause and responding to immunosuppression...
2017: Case Reports in Hematology
https://www.readbyqxmd.com/read/28927163/frequency-and-clinicopathologic-features-of-runx1-mutations-in-patients-with-acute-myeloid-leukemia-not-otherwise-specified
#8
Eunkyoung You, Young-Uk Cho, Seongsoo Jang, Eul-Ju Seo, Jung-Hee Lee, Je-Hwan Lee, Kyoo-Hyung Lee, Kyung-Nam Koh, Ho Joon Im, Jong Jin Seo, Young-Mi Park, Jong-Keuk Lee, Chan-Jeoung Park
Objectives: To evaluate the frequency and clinicopathologic characteristics of RUNX1 mutations, focusing on patients with acute myeloid leukemia not otherwise specified (AML NOS). Methods: Diagnostic samples from 219 patients with AML NOS were analyzed for RUNX1 mutations using standard polymerase chain reaction and direct sequencing. Results: Thirty-one RUNX1 mutations were detected in 33 (15.1%) patients. Mutations clustered in the Runt homology (61...
July 1, 2017: American Journal of Clinical Pathology
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
#9
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/28926803/distribution-of-chromosome-breakpoints-in-benzene-exposed-and-unexposed-aml-patients
#10
Patrick J Kerzic, Richard D Irons
Results of laboratory studies and investigations of occupationally exposed healthy individuals have been used to develop a mode of action for benzene-induced leukemia that mirrors disease following treatment with chemotherapeutic agents. Recently we have described series of AML and MDS cases with benzene exposure history, and have provided cytogenetic, molecular, and pathologic evidence that these cases differ significantly in many features from therapy-related disease. Here we have extended this work, and describe chromosome breakpoints across 441 identifiable regions, in terms of gains or losses, in 710 AML cases collected during the Shanghai Health Study, which include 75 with a history of benzene exposure...
September 1, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28925935/technical-advances-in-the-measurement-of-residual-disease-in-acute-myeloid-leukemia
#11
REVIEW
Gregory W Roloff, Catherine Lai, Christopher S Hourigan, Laura W Dillon
Outcomes for those diagnosed with acute myeloid leukemia (AML) remain poor. It has been widely established that persistent residual leukemic burden, often referred to as measurable or minimal residual disease (MRD), after induction therapy or at the time of hematopoietic stem cell transplant (HSCT) is highly predictive for adverse clinical outcomes and can be used to identify patients likely to experience clinically evident relapse. As a result of inherent genetic and molecular heterogeneity in AML, there is no uniform method or protocol for MRD measurement to encompass all cases...
September 19, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/28924290/a-case-report-of-acute-myelogenous-leukemia-with-turner-syndrome
#12
Nadir Siddiqui, Mirza Faris Ali Baig, Bilal Ahmed Khan
Turner Syndrome was diagnosed in a 45 years old female, known case of Acute Myeloid Leukaemia (AML) with maturation, on Bone Marrow biopsy. She presented with blurred vision, vertigo, exertional dyspnoea and insomnia. She did not show the typical features of Turner syndrome, but her cytogenetis confirmed the diagnosis. Bone marrow biopsy showed diffuse infiltration of blast cells with cellularity around 80-85% and haematopoietic suppression. Karyotype analysis showed: 45 X, -X, t (8; 21) (q22; q22) [According to The International System for Human Cytogenetic Nomenclature (ISCN)]...
September 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28923882/mutational-profiling-of-acute-myeloid-leukemia-with-normal-cytogenetics-in-brazilian-patients-the-value-of-next-generation-sequencing-for-genomic-classification
#13
Thiago Rodrigo de Noronha, Miguel Mitne-Neto, Maria de Lourdes Chauffaille
Karyotype (KT) aberrations are important prognostic factors for acute myeloid leukemia (AML); however, around 50% of cases present normal results. Single nucleotide polymorphism array can detect chromosomal gains, losses or uniparental disomy that are invisible to KT, thus improving patients' risk assessment. However, when both tests are normal, important driver mutations can be detected by the use of next-generation sequencing (NGS). Fourteen adult patients with AML with normal cytogenetics were investigated by NGS for 19 AML-related genes...
September 18, 2017: Journal of Investigative Medicine: the Official Publication of the American Federation for Clinical Research
https://www.readbyqxmd.com/read/28923853/adaptation-to-tki-treatment-reactivates-erk-signaling-in-tyrosine-kinase-driven-leukemias-and-other-malignancies
#14
Joshua K Bruner, Hayley S Ma, Li Li, Alice Can Ran Qin, Michelle A Rudek, Richard J Jones, Mark J Levis, Keith W Pratz, Christine A Pratilas, Donald Small
FLT3 tyrosine kinase inhibitors (TKI) have been tested extensively to limited benefit in acute myeloid leukemia. We hypothesized that FLT3/ITD leukemia cells exhibit mechanisms of intrinsic signaling adaptation to TKI treatment that are associated with an incomplete response. Here we identified reactivation of ERK signaling within hours following treatment of FLT3/ITD AML cells with selective inhibitors of FLT3. When these cells were treated with inhibitors of both FLT3 and MEK in combination, ERK reactivation was abrogated and anti-leukemia effects were more pronounced compared to either drug alone...
September 18, 2017: Cancer Research
https://www.readbyqxmd.com/read/28921764/acanthamoeba-granulomatous-amoebic-encephalitis-after-pediatric-hematopoietic-stem-cell-transplant
#15
Scott L Coven, Eunkyung Song, Sarah Steward, Christopher R Pierson, Jennifer R Cope, Ibne K Ali, Monica I Ardura, Mark W Hall, Melissa G Chung, Rajinder P S Bajwa
Acanthamoeba encephalitis is a rare, often fatal condition, particularly after HSCT, with 9 reported cases to date in the world literature. Our case was originally diagnosed with ALL at age 3 years, and after several relapses underwent HSCT at age 9 years. At 17 years of age, he was diagnosed with secondary AML for which he underwent a second allogeneic HSCT. He presented with acute-onset worsening neurological deficits on day +226 after the second transplant and a post-mortem diagnosis of Acanthamoeba encephalitis was established, with the aid of the CDC...
September 17, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28920958/the-n-6-methyladenosine-m-6-a-forming-enzyme-mettl3-controls-myeloid-differentiation-of-normal-hematopoietic-and-leukemia-cells
#16
Ly P Vu, Brian F Pickering, Yuanming Cheng, Sara Zaccara, Diu Nguyen, Gerard Minuesa, Timothy Chou, Arthur Chow, Yogesh Saletore, Matthew MacKay, Jessica Schulman, Christopher Famulare, Minal Patel, Virginia M Klimek, Francine E Garrett-Bakelman, Ari Melnick, Martin Carroll, Christopher E Mason, Samie R Jaffrey, Michael G Kharas
N(6)-methyladenosine (m(6)A) is an abundant nucleotide modification in mRNA that is required for the differentiation of mouse embryonic stem cells. However, it remains unknown whether the m(6)A modification controls the differentiation of normal and/or malignant myeloid hematopoietic cells. Here we show that shRNA-mediated depletion of the m(6)A-forming enzyme METTL3 in human hematopoietic stem/progenitor cells (HSPCs) promotes cell differentiation, coupled with reduced cell proliferation. Conversely, overexpression of wild-type METTL3, but not of a catalytically inactive form of METTL3, inhibits cell differentiation and increases cell growth...
September 18, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28920929/structural-investigation-of-nucleophosmin-interaction-with-the-tumor-suppressor-fbw7%C3%AE
#17
A Di Matteo, M Franceschini, A Paiardini, A Grottesi, S Chiarella, S Rocchio, C Di Natale, D Marasco, L Vitagliano, C Travaglini-Allocatelli, L Federici
Nucleophosmin (NPM1) is a multifunctional nucleolar protein implicated in ribogenesis, centrosome duplication, cell cycle control, regulation of DNA repair and apoptotic response to stress stimuli. The majority of these functions are played through the interactions with a variety of protein partners. NPM1 is frequently overexpressed in solid tumors of different histological origin. Furthermore NPM1 is the most frequently mutated protein in acute myeloid leukemia (AML) patients. Mutations map to the C-terminal domain and lead to the aberrant and stable localization of the protein in the cytoplasm of leukemic blasts...
September 18, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28919634/achievement-of-a-negative-minimal-residual-disease-state-after-hypomethylating-agent-therapy-in-older-patients-with-aml-reduces-the-risk-of-relapse
#18
P Boddu, J Jorgensen, H Kantarjian, G Borthakur, T Kadia, N Daver, Y Alvarado, N Pemmaraju, P Bose, K Naqvi, M Yilmaz, S Pierce, M Brandt, C D DiNardo, E J Jabbour, M Konopleva, G Garcia-Manero, J Cortes, F Ravandi
Leukemia accepted article preview online, 18 September 2017. doi:10.1038/leu.2017.285.
September 18, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28918618/concurrent-oncocytoma-and-two-angiomyolipomas-in-a-diabetic-kidney-a-very-rare-condition
#19
Fariba Abbasi, Ata Abbasi, Mansour Alizadeh, Parisa Modarresi
Angiomyolipoma (AML) and oncocytoma are uncommon benign neoplasms of the kidney which their simultaneous occurrence in the same kidney is extremely rare. This study reports a 60-year-old diabetic woman with the rare simultaneous occurrence of three renal masses. Histologic evaluation revealed two angiomyolipomas and one oncocytoma within the same kidney, in a background of histologic features of diabetic nephropathy. Renal angiomyolipoma and oncocytoma are uncommon neoplasms, and their simultaneous occurrence in the same kidney is extremely rare...
July 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/28918518/micro-rna-profiling-of-exosomes-from-marrow-derived-mesenchymal-stromal-cells-in-patients-with-acute-myeloid-leukemia-implications-in-leukemogenesis
#20
Juliana Barrera-Ramirez, Jessie R Lavoie, Harinad B Maganti, William L Stanford, Caryn Ito, Mitchell Sabloff, Marjorie Brand, Michael Rosu-Myles, Yevgeniya Le, David S Allan
Gene regulatory networks in AML may be influenced by microRNAs (miRs) contained in exosomes derived from bone marrow mesenchymal stromal cells (MSCs). We sequenced miRs from exosomes isolated from marrow-derived MSCs from patients with AML (n = 3) and from healthy controls (n = 3; not age-matched). Known targets of mIRs that were significantly different in AML-derived MSC exosomes compared to controls were identified. Of the five candidate miRs identified by differential packaging in exosomes, only miR-26a-5p and miR-101-3p were significantly increased in AML-derived samples while miR-23b-5p, miR-339-3p and miR-425-5p were significantly decreased...
September 16, 2017: Stem Cell Reviews
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