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Acute leukemias

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https://www.readbyqxmd.com/read/28930710/at-the-intersection-of-faith-culture-and-family-dynamics-a-complex-case-of-refusal-of-treatment-for-childhood-cancer
#1
Amy E Caruso Brown
Refusing treatment for potentially curable childhood cancers engenders much discussion and debate. I present a case in which the competent parents of a young Amish child with acute myeloid leukemia deferred authority for decision making to the child's maternal grandfather, who was vocal in his opposition to treatment. I analyze three related concerns that distinguish this case from other accounts of refused treatment. First, I place deference to grandparents as decision makers in the context of surrogate decision making more generally...
2017: Journal of Clinical Ethics
https://www.readbyqxmd.com/read/28929913/development-of-acute-promyelocytic-leukemia-in-a-patient-with-tetraplegia-while-in-inpatient-rehabilitation-a-case-report
#2
Christopher A Beal, Michael C Krouse, Jeffrey T Tubbs
STUDY DESIGN: a single case report. OBJECTIVES: To report a case of a patient with tetraplegia who developed acute promyelocytic leukemia (APL) while in inpatient rehabilitation after 10.5 months. SETTING: A VA Medical Center Spinal Cord Injury Service and Disorders Unit Case Report: A 47 year-old male with a stage IV sacral pressure ulcer and C4 AIS A complete tetraplegia secondary to a motor vehicle collision, developed fever, thrombocytopenia, and anemia 20 months after his injury while in inpatient rehabilitation and was found to have APL, confirmed following bone marrow biopsy...
September 20, 2017: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/28929739/ultrasensitive-capture-detection-and-release-of-circulating-tumor-cells-using-nanochannel-ionchannel-hybrid-coupled-with-electrochemical-detection-technique
#3
Jing Cao, Xiao-Ping Zhao, Muhammad Rizwan Younis, Zhong-Qiu Li, Xing-Hua Xia, Chen Wang
With the growing demands of the early, accurate, and sensitive diagnosis for cancers, the development of new diagnostic technologies becomes increasingly important. In this study, we proposed a strategy for efficient capture and sensitive detection of circulating tumor cells (CTCs) using array nanochannel-ionchannel hybrid coupled with electrochemical detection technique. The aptamer probe was immobilized on the ionchannel surface to couple with the protein overexpressed on CTCs membrane. Through this special molecular recognition, CTCs can be selectively captured...
September 20, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28929043/supraventricular-tachycardia-and-tricuspid-regurgitation-in-the-setting-of-misplaced-implantable-port-catheter-tip
#4
Ahmad Awan, Bisma Ahsan, Hasan Iftikhar, Akbar Khan, Fasil Tiruneh, Yididia Bekele, Ankit Mahajan, Ahmed A Awan
We present the case of a 31-year-old female with a past medical history of B-cell leukemia, on maintenance chemotherapy administered via centrally placed implantable catheter port, who presented to the emergency room with fever, chills, and generalized body pain of one day's duration. After initial workup, the patient was admitted to the intensive care unit and managed for severe sepsis. The patient was found to have a new-onset 3/6 holosystolic murmur at the left lower sternal border. Furthermore, she developed an episode of supraventricular tachycardia that responded to adenosine...
July 11, 2017: Curēus
https://www.readbyqxmd.com/read/28928996/immune-mediated-autonomic-neuropathies-following-allogeneic-stem-cell-transplantation-in-acute-myeloid-leukemia
#5
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/28928972/screening-of-mutations-in-the-additional-sex-combs-like-1-transcriptional-regulator-tumor-protein-p53-and-kras-proto-oncogene-gtpase-nras-proto-oncogene-gtpase-genes-of-patients-with-myelodysplastic-syndrome
#6
Carolina Leite, Lucas Delmonico, Gilda Alves, Romario José Gomes, Mariana Rodrigues Martino, Aline Rodrigues da Silva, Aline Dos Santos Moreira, Maria Christina Maioli, Luciano Rios Scherrer, Elenice Ferreira Bastos, Roberto Irineu, Maria Helena Ornellas
Myelodysplastic syndrome (MDS) is a heterogeneous group of clonal bone marrow disorders characterized by ineffective hematopoiesis, different degrees of cellular dysplasia, and increased risk of progression to acute myeloid leukemia. International Prognostic Scoring System is the gold standard for MDS classification; however, patients exhibiting different clinical behaviors often coexist in the same group, indicating that the currently available scoring systems are insufficient. The genes that have recently been identified as mutated in MDS, including additional sex combs like 1, transcriptional regulator (ASXL1), tumor protein p53 (TP53), and KRAS proto-oncogene and GTPase (KRAS)/NRAS proto-oncogene, GTPase (NRAS), may contribute to a more comprehensive classification, as well as to the prognosis and progression of the disease...
October 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28927784/safety-and-efficacy-of-blinatumomab-in-combination-with-a-tyrosine-kinase-inhibitor-for-the-treatment-of-relapsed-philadelphia-chromosome-positive-leukemia
#7
Rita Assi, Hagop Kantarjian, Nicholas J Short, Naval Daver, Koichi Takahashi, Guillermo Garcia-Manero, Courtney DiNardo, Jan Burger, Jorge Cortes, Nitin Jain, William Wierda, Salim Chamoun, Marina Konopleva, Elias Jabbour
OBJECTIVE: The treatment of Philadelphia chromosome-positive (Ph+) acute lymphoblastic leukemia has been revolutionized with the introduction of tyrosine kinase inhibitors (TKIs) and the combination of these agents with chemotherapy. Blinatumomab is a bispecific anti-CD3/CD19 monoclonal antibody with clinical activity as single-agent in the relapsed setting and independent of BCR-ABL1 mutational status, including T315I. The combination of blinatumomab with a TKI may further improve outcomes for this high-risk population, including higher eradication of minimal residual disease and minimize the use of chemotherapy...
August 18, 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/28927780/effects-of-metformin-on-proliferation-and-apoptosis-of-human-megakaryoblastic-dami-and-meg-01-cells
#8
Xue Liang, Peiyan Kong, Jin Wang, Yulin Xu, Chunfang Gao, Guozhen Guo
Metformin has received increasing attention for its potential anticancer activity against certain human leukemia cells, but its effects on human megakaryoblastic cells are unclear. This study aimed to investigate the effects of metformin on proliferation and apoptosis of human megakaryoblastic cells (Dami and MEG-01) and the underlying molecular mechanisms. CCK8 assay was employed to measure cell proliferation. Flow cytometry was adopted to detect cell apoptosis. Western blot was further employed to measure apoptosis-related proteins...
August 23, 2017: Journal of Pharmacological Sciences
https://www.readbyqxmd.com/read/28927558/acute-leukemia-is-associated-with-cardiac-alterations-before-chemotherapy
#9
Bruna Morhy Borges Leal Assuncao, Mark D Handschumacher, Andrew M Brunner, Evin Yucel, Philipp E Bartko, Kai-Hung Cheng, Orlando Campos, Amir T Fathi, Timothy C Tan, Marielle Scherrer-Crosbie
BACKGROUND: Patients with acute leukemia (AL) have a higher rate of congestive heart failure than patients with other cancers. AL may predispose to cardiac dysfunction before chemotherapy because of high cytokine release or direct leukemic myocardial infiltration. The aims of this study were to evaluate whether AL is associated with abnormalities of myocardial structure and function before chemotherapy and to identify possible risk factors associated with these myocardial changes. METHODS: Using an echocardiographic database, 76 patients with AL and 76 patients without cancer matched for age, gender, hypertension, and the presence of diabetes were retrospectively selected...
September 15, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28927163/frequency-and-clinicopathologic-features-of-runx1-mutations-in-patients-with-acute-myeloid-leukemia-not-otherwise-specified
#10
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/28927162/myelodysplastic-syndrome-unclassifiable-mds-u-with-1-blasts-is-a-distinct-subgroup-of-mds-u-with-a-poor-prognosis
#11
Elizabeth Margolskee, Robert P Hasserjian, Duane Hassane, Wayne Tam, Susan Mathew, Chi Young Ok, Sa A Wang, Jean Oak, Daniel A Arber, Attilio Orazi
Objectives: Three situations qualify as myelodysplastic syndrome, unclassifiable (MDS-U): (1) refractory cytopenia with dysplasia and 1% blasts in peripheral blood (BL), (2) pancytopenia with unilineage dysplasia (Pan), and (3) persistent cytopenia, less than 5% bone marrow blasts, and less than 10% dysplastic cells and presence of MDS-defining cytogenetic abnormalities (CG). We compared the clinicopathologic features and mutational profiles for these three groups. Methods: MDS-U cases were reviewed at four major academic institutions...
July 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28927157/selected-mirna-levels-are-associated-with-ikzf1-microdeletions-in-pediatric-acute-lymphoblastic-leukemia
#12
J Krzanowski, J Madzio, A Pastorczak, A Tracz, M Braun, J Tabarkiewicz, A Pluta, W Młynarski, I Zawlik
The clinical outcome of children with high-risk relapsed B-cell precursor acute lymphoblastic leukemia (BCP-ALL) is poor. The present study assessed the utility and prognostic value of selected microRNA (miRNA/miR) in BCP-ALL. The changes in the expression levels of these miRNAs regarding known gene lesions affecting lymphoid development [early B-cell factor 1 (EBF1), ETS variant 6 (ETV6), IKAROS family zinc finger 1 (IKZF1), paired box 5 (PAX5), cyclin dependent kinase inhibitor (CDKN) 2A/CDKN2B, retinoblastoma 1 (RB1), pseudoautosomal region 1 (PAR1), B-cell translocation gene 1 protein (BTG1)] were analyzed...
September 2017: Oncology Letters
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
#13
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/28927052/synergistic-effects-of-phenylhexyl-isothiocyanate-and-ly294002-on-the-pi3k-akt-signaling-pathway-in-hl-60-cells
#14
Huicong Yang, Yiqun Huang, Yong Zou, Xudong Ma
The aim of the present study was to investigate the synergistic effect of phenylhexyl isothiocyanate (PHI) and LY294002 [an inhibitor of phosphoinositide 3-kinase (PI3K)] on the PI3K/protein kinase B (Akt) signaling pathway, modulating histone acetylation, inhibiting cell viability and inducing apoptosis in HL-60 cells. The inhibition of HL-60 cell viability was monitored using an MTT assay. Cell apoptosis was measured using flow cytometry. Expression of acetylated histone H3 and histone H4, and the Akt signaling pathway proteins phosphorylated Akt (p-Akt), phosphorylated mammalian target of rapamycin (p-mTOR) and phosphorylated ribosomal protein S6 kinase (p-p70S6K) was detected using western blotting...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927044/isolation-and-characterization-of-adult-mammary-stem-cells-from-breast-cancer-adjacent-tissues
#15
Ai-Ping Shi, Zhi-Min Fan, Ke-Wei Ma, Yan-Fang Jiang, Lei Wang, Ke-Wei Zhang, Shi-Bo Fu, Ning Xu, Zhi-Ru Zhang
Normal adult mammary stem cells (AMSCs) are promising sources for breast reconstruction, particularly following the resection of breast tumors. However, carcinogenic events can potentially convert normal AMSCs to cancer stem cells, posing a safety concern for the use of AMSCs for clinical tissue regeneration. In the present study, AMSCs and autologous primary breast cancer cells were isolated and compared for their ability to differentiate, their gene expression profile, and their potential to form tumors in vivo...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28926429/targeting-histone-acetylation-readers-and-writers-in-leukemia-and-cancer
#16
Christopher B Benton, Warren Fiskus, Kapil N Bhalla
Chromatin packaging of DNA provides a framework for transcriptional regulation. Modifications to DNA and histone proteins in nucleosomes lead to conformational changes, alterations in the recruitment of transcriptional complexes, and ultimately modulation of gene expression. We provide a focused review of control mechanisms that help modulate the activation and deactivation of gene transcription specifically through histone acetylation writers and readers in cancer. The chemistry of these modifications is subject to clinically actionable targeting, including state-of-the-art strategies to inhibit basic oncogenic mechanisms related to histone acetylation...
September 2017: Cancer Journal
https://www.readbyqxmd.com/read/28926427/dna-methylation-targeted-drugs
#17
Elodie M Da Costa, Gabrielle McInnes, Annie Beaudry, Noël J-M Raynal
Targeting DNA hypermethylation, using nucleoside analogs, is an efficient approach to reprogram cancer cell epigenome leading to reduced proliferation, increased differentiation, recognition by the immune system, and ultimately cancer cell death. DNA methyltransferase inhibitors have been approved for the treatment of myelodysplastic syndromes, chronic myelomonocytic leukemia, and acute myelogenous leukemia. To improve clinical efficacy and overcome mechanisms of drug resistance, a second generation of DNA methyltransferase inhibitors has been designed and is currently in clinical trials...
September 2017: Cancer Journal
https://www.readbyqxmd.com/read/28925935/technical-advances-in-the-measurement-of-residual-disease-in-acute-myeloid-leukemia
#18
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/28925877/4-aryl-heteroaryl-4h-fused-pyrans-as-anti-proliferative-agents-design-synthesis-and-biological-evaluation
#19
Dinesh Kumar, Gurpreet Singh, Pooja Sharma, Arem Quayum, Girish Mahajan, M J Mintoo, Shashank Kumar Singh, Dilip Manikrao Mondhe, Pms Bedi, Subheet K Jain, Girish Kumar Gupta
The current study is focused on the design and synthesis of 4-aryl/heteroaryl-4H-fused pyrans as anti-proliferative agents. All the synthesized molecules were screened against a panel of human carcinoma cell lines. Significant inhibition was exhibited by the compounds against HCT-116 (Colon) and PC-3 (Prostate) cell lines while A-549 (Lung) cell lines, MiaPaCa-2 (Pancreatic) cell lines and HL-60 (Leukemia Cancer) cell lines were almost resistant to the exposure of the test compounds. Compound FP-(v)n displayed noteworthy cytotoxicity towards HCT-116 malignant cells with IC50 value of 0...
September 18, 2017: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/28924550/establishment-and-characterization-of-arsenic-trioxide-resistant-kb-ato-cells
#20
Yun-Kai Zhang, Chunling Dai, Chun-Gang Yuan, Hsiang-Chun Wu, Zhijie Xiao, Zi-Ning Lei, Dong-Hua Yang, X Chris Le, Liwu Fu, Zhe-Sheng Chen
Arsenic trioxide (ATO) is used as a chemotherapeutic agent for the treatment of acute promyelocytic leukemia. However, increasing drug resistance is reducing its efficacy. Therefore, a better understanding of ATO resistance mechanism is required. In this study, we established an ATO-resistant human epidermoid carcinoma cell line, KB/ATO, from its parental KB-3-1 cells. In addition to ATO, KB/ATO cells also exhibited cross-resistance to other anticancer drugs such as cisplatin, antimony potassium tartrate, and 6-mercaptopurine...
September 2017: Acta Pharmaceutica Sinica. B
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