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https://www.readbyqxmd.com/read/27915371/histone-deacetylase-inhibitors-deplete-myeloid-derived-suppressor-cells-induced-by-4t1-mammary-tumors-in-vivo-and-in-vitro
#1
Hai-Fang Wang, Fen Ning, Zong-Cai Liu, Long Wu, Zi-Qian Li, Yi-Fei Qi, Ge Zhang, Hong-Sheng Wang, Shao-Hui Cai, Jun Du
Myeloid-derived suppressor cells (MDSC) have been identified as a population of immature myeloid cells that suppress anti-tumor immunity. MDSC are increased in tumor-bearing hosts; thus, depletion of MDSC may enhance anti-tumor immunity. Histone deacetylase inhibitors (HDACi) are chemical agents that are primarily used against hematologic malignancies. The ability of these agents to modulate anticancer immunity has recently been extensively studied. However, the effect of HDACi on MDSC has remained largely unexplored...
December 3, 2016: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/27913466/nontransplant-therapy-for-bone-marrow-failure
#2
Danielle M Townsley, Thomas Winkler
Nontransplant therapeutic options for acquired and constitutional aplastic anemia have significantly expanded during the last 5 years. In the future, transplant may be required less frequently. That trilineage hematologic responses could be achieved with the single agent eltrombopag in refractory aplastic anemia promotes new interest in growth factors after years of failed trials using other growth factor agents. Preliminary results adding eltrombopag to immunosuppressive therapy are promising, but long-term follow-up data evaluating clonal evolution rates are required before promoting its standard use in treatment-naive disease...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27913464/new-challenges-in-evaluating-anemia-in-older-persons-in-the-era-of-molecular-testing
#3
David P Steensma
Anemia is common in older persons, and often remains unexplained despite a thorough clinical history, physical examination, and focused laboratory testing, including marrow aspiration, biopsy, and karyotyping. The advent of molecular genetic testing panels in hematology clinical practice has complicated the evaluation of older patients with unexplained anemia. While the presence of a somatic mutation provides evidence of clonal hematopoiesis and may support a diagnosis of a hematologic neoplasm such as one of the myelodysplastic syndromes (MDS), with rare exceptions, individual mutations are not strongly associated with one specific diagnosis, nor are they by themselves diagnostic of neoplasia...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27908537/the-unusual-association-between-neuroblastoma-and-gaucher-disease-case-report-and-review-of-the-literature
#4
Annalisa Madeo, Alberto Garaventa, Angela Rita Sementa, Chiara Suffia, Maja Di Rocco
Gaucher disease (GD) patients have an increased risk of cancer, in particular of hematological origin, while the association between GD and Neuroblastoma (NBL) has never been described. Here we report the case of an adolescent diagnosed with NBL, also presenting splenomegaly and persistent thrombocytopenia. The association with GD, suggested by the histological findings on bone marrow biopsy, was confirmed by enzymatic and genetic tests. The possible pathogenetic mechanisms are briefly reviewed. The evidence of this new association supports the necessity of further studies on GD comorbidities and the need of systematic data collection and analysis, potentially through an international registry...
November 23, 2016: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/27905900/prevalence-clinical-and-economic-burden-of-mucormycosis-related-hospitalizations-in-the-united-states-a-retrospective-study
#5
Dimitrios P Kontoyiannis, Hongbo Yang, Jinlin Song, Sneha S Kelkar, Xi Yang, Nkechi Azie, Rachel Harrington, Alan Fan, Edward Lee, James R Spalding
BACKGROUND: Mucormycosis is a rare but devastating fungal infection primarily affecting immunocompromised patients such as those with hematological malignancy, bone marrow and solid organ transplantation, and patients with diabetes, and, even more rarely, immunocompetent patients. The objective of this study was to assess the prevalence and burden, both clinical and economic, of mucormycosis among hospitalized patients in the U.S. METHODS: This is a retrospective study using the Premier Perspective(TM) Comparative Database, with more than 560 participating hospitals covering 104 million patients (January 2005-June 2014)...
December 1, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27904036/differential-regulation-of-lympho-myelopoiesis-by-stromal-cells-in-the-early-and-late-phases-in-balb-c-mice-repeatedly-exposed-to-lipopolysaccharide
#6
Isao Tsuboi, Tomonori Harada, Yoko Hirabayashi, Jun Kanno, Shin Aizawa
Chronic lipopolysaccharide (LPS) exposure to mice reduces the lymphoid compartment and skews the hematopoietic cell compartment toward myeloid-cells, which is considered to be a direct effect of LPS on hematopoietic stem cells. However, the effect of chronic LPS exposure on stromal-cells, which compose the hematopoietic microenvironment, has not been elucidated. Here, we investigated early- and late-phase effects of repeated LPS exposure on stromal-cells. During the early phase, when mice were treated with 5 or 25 µg LPS three times at weekly intervals, the numbers of myeloid-progenitor (colony forming unit-granulocyte macrophage (CFU-GM)) cells and B lymphoid-progenitor (CFU-preB) cells in the bone-marrow (BM) rapidly decreased after each treatment...
2016: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/27900088/favorable-control-of-advanced-colon-adenocarcinoma-with-severe-bone-marrow-metastasis-a-case-report
#7
Fumiyasu Hanamura, Yoshihiro Shibata, Tsuyoshi Shirakawa, Miyuki Kuwayama, Hisanobu Oda, Hiroshi Ariyama, Kenichi Taguchi, Taito Esaki, Eishi Baba
Colorectal cancer (CRC) has a propensity to metastasize to the liver, lungs and regional abdominal lymph nodes, but rarely to the bone marrow. A 60-year-old man presented to the National Hospital Organization Kyushu Cancer Center with a 4-week history of persistent lower back pain, anorexia and difficulty defecating. Complete blood count revealed severe thrombocytopenia and erythroblastosis, suggesting a hematological malignancy. However, the bone marrow examination demonstrated involvement by a moderately to poorly differentiated adenocarcinoma, but no hematopoietic abnormalities...
November 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/27899193/genetic-predisposition-to-leukemia-and-other-hematologic-malignancies
#8
REVIEW
Simone Feurstein, Michael W Drazer, Lucy A Godley
In this review, we provide an overview of familial myelodysplastic syndromes (MDS)/acute leukemia (AL) and bone marrow failure syndromes, as well as insights into familial myeloproliferative neoplasms (MPNs), familial multiple myeloma (MM), familial Waldenström macroglobulinemia (WM), familial lymphoma, and cancer predisposition syndromes with increased risk of MDS/AL. This field will continue to accelerate as next-generation sequencing (NGS) techniques identify novel predisposition alleles in families with a genetic predisposition to hematologic malignancies...
October 2016: Seminars in Oncology
https://www.readbyqxmd.com/read/27896224/in-vitro-apoptotic-effects-of-farnesyltransferase-blockade-in-acute-myeloid-leukemia-cells
#9
V Giudice, P Ricci, L Marino, M Rocco, G Villani, M Langella, L Manente, E Seneca, I Ferrara, L Pezzullo, B Serio, C Selleri
Farnesyltransferase inhibitors (FTIs) are a class of oral anti-cancer drugs currently tested in phase I-II clinical trials for treatment of hematological malignancies. The in vitro effects of various FTIs (alpha-hydroxyfarnesylphosphonic acid, manumycin-A and SCH66336) were tested on CD34(+) KG1a cell line and in primary acute myeloid leukemia (AML) cells from 64 patients. By cell viability and clonogeneic methylcellulose assays, FTIs showed a significant inhibitory activity in CD34(+) KG1a and primary bone marrow (BM) leukemic cells from 56% of AML patients...
November 2016: Translational Medicine @ UniSa
https://www.readbyqxmd.com/read/27891267/marginal-zone-lymphoma-complicated-by-protein-losing-enteropathy
#10
Nadine Stanek, Peter Bauerfeind, Guido Herzog, Henriette Heinrich, Matthias Sauter, Daniela Lenggenhager, Cäcilia Reiner, Markus G Manz, Jeroen S Goede, Benjamin Misselwitz
Protein losing enteropathy (PLE) refers to excessive intestinal protein loss, resulting in hypoalbuminemia. Underlying pathologies include conditions leading to either reduced intestinal barrier or lymphatic congestion. We describe the case of a patient with long-lasting diffuse abdominal problems and PLE. Repetitive endoscopies were normal with only minimal lymphangiectasia in biopsies. Further evaluations revealed an indolent marginal zone lymphoma with minor bone marrow infiltration. Monotherapy with rituximab decreased bone marrow infiltration of the lymphoma but did not relieve PLE...
2016: Case Reports in Hematology
https://www.readbyqxmd.com/read/27890933/preclinical-activity-of-cpi-0610-a-novel-small-molecule-bromodomain-and-extra-terminal-protein-inhibitor-in-the-therapy-of-multiple-myeloma
#11
K T Siu, J Ramachandran, A J Yee, H Eda, L Santo, C Panaroni, J A Mertz, R J Sims, M R Cooper, N Raje
Inhibition of the bromodomain and extra-terminal (BET) proteins is a promising therapeutic strategy for various hematologic cancers. Previous studies suggest that BET inhibitors constrain tumor cell proliferation and survival mainly through suppression of MYC transcription and activity. However, suppression of the transcription of additional genes also contributes to the anti-tumor activity of BET inhibitors but is less well understood. Here we examined the therapeutic potential of CPI-0610, a potent BET inhibitor currently undergoing Phase I clinical testing, in multiple myeloma (MM)...
November 28, 2016: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/27888540/higher-dose-of-cd34-peripheral-blood-stem-cells-is-associated-with-better-survival-after-haploidentical-stem-cell-transplantation-in-pediatric-patients
#12
Yao Chen, Lan-Ping Xu, Kai-Yan Liu, Huan Chen, Yu-Hong Chen, Xiao-Hui Zhang, Yu Wang, Feng-Rong Wang, Wei Han, Jing-Zhi Wang, Chen-Hua Yan, Xiao-Jun Huang
Haploidentical stem cell transplantation (SCT) is increasingly used to treat pediatric patients with malignant or non-malignant hematological disorders. The CD34+ dose of bone marrow or peripheral blood stem cells (PBSCs) has been shown to be an important determinant of the transplant outcome in adults under various preparative regimens. However, knowledge of the effect of the CD34+ dose in pediatric haploidentical SCT is limited. We analyzed the data of 348 pediatric patients (aged 2-18 years) with acute or chronic leukemia, myelodysplastic syndrome (MDS), and other hematological disorders that received a transplant between 2002 and 2012...
November 26, 2016: Clinical Transplantation
https://www.readbyqxmd.com/read/27888014/nonmyeloablative-haploidentical-bone-marrow-transplantation-with-post-transplant-cyclophosphamide-for-pediatric-and-young-adult-patients-with-high-risk-hematologic-malignancies
#13
Orly R Klein, Jessica Buddenbaum, Noah Tucker, Allen R Chen, Christopher J Gamper, David Loeb, Elias Zambidis, Nicolas J Llosa, Jeffrey S Huo, Nancy Robey, Mary Jo Holuba, Yvette L Kasamon, Shannon R McCurdy, Richard Ambinder, Javier Bolaños-Meade, Leo Luznik, Ephraim J Fuchs, Richard J Jones, Kenneth R Cooke, Heather J Symons
Lower intensity conditioning regimens for haploidentical blood or marrow transplantation (BMT) are safe and efficacious for adult patients with hematologic malignancies. We report data for pediatric/young adult patients with high-risk hematologic malignancies (n=40) treated with nonmyeloablative haploidentical BMT with post-transplantation cyclophosphamide (PT/Cy) from 2003-2015. Patients received a preparative regimen of fludarabine, cyclophosphamide, and total body irradiation. Post-transplant immunosuppression consisted of cyclophosphamide, mycophenolate mofetil, and tacrolimus...
November 22, 2016: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/27885349/chronic-lymphocytic-leukemia-with-translocation-2-14-p16-q32-a-case-report-and-review-of-the-literature
#14
Francisco Socola, Giovanni Insuasti-Beltran, Rodolfo Henrich Lobo, Shebli Atrash, Appalanaidu Sasapu
We report the case of a young African American male with no significant past medical history presenting with low back and bilateral leg pain; presenting CBC and chemistries revealed elevated white blood cell count of 250,000, with anemia (Hb 6.8 g/dL) and thrombocytopenia (platelets 9 K/μL), and elevated LDH, 1008. Physical examination findings were notable for diffuse lymphadenopathy and lower extremity skin nodules. Interestingly the bone marrow biopsy revealed involvement by CLL/SLL with translocation (2;14)(p16;q32) and trisomy 12...
2016: Case Reports in Oncological Medicine
https://www.readbyqxmd.com/read/27882114/apc2-and-cyp1b1-methylation-changes-in-the-bone-marrow-of-acute-myeloid-leukemia-patients-during-chemotherapy
#15
Yongming Xia, Qingxiao Hong, Xiaoying Chen, Huadan Ye, Lili Fang, Annan Zhou, Yuting Gao, Danjie Jiang, Shiwei Duan
Aberrant promoter DNA methylation is a major mechanism of leukemogenesis in hematologic malignancies, including acute myeloid leukemia (AML). However, the association between promoter methylation with chemotherapeutic outcomes remains unknown. In the present study, bone marrow samples were collected prior to and following chemotherapy in 30 AML patients. Methylation-specific polymerase chain reaction technology was used to examine the promoter methylation status of adenomatous polyposis col 2 (APC2) and cytochrome P450 family 1 subfamily B polypeptide 1 (CYP1B1)...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27881982/milestones-of-hematopoietic-stem-cell-transplantation-from-first-human-studies-to-current-developments
#16
REVIEW
Mateja Kralj Juric, Sakhila Ghimire, Justyna Ogonek, Eva M Weissinger, Ernst Holler, Jon J van Rood, Machteld Oudshoorn, Anne Dickinson, Hildegard T Greinix
Since the early beginnings, in the 1950s, hematopoietic stem cell transplantation (HSCT) has become an established curative treatment for an increasing number of patients with life-threatening hematological, oncological, hereditary, and immunological diseases. This has become possible due to worldwide efforts of preclinical and clinical research focusing on issues of transplant immunology, reduction of transplant-associated morbidity, and mortality and efficient malignant disease eradication. The latter has been accomplished by potent graft-versus-leukemia (GvL) effector cells contained in the stem cell graft...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27879553/acute-vision-loss-as-the-only-sign-of-leukemia-relapse
#17
Marta Cerdà-Ibáñez, Patricia Bayo-Calduch, Laura Manfreda-Domínguez, Antonio Duch-Samper
PURPOSE: To report a case of unilateral exudative retinal detachment as the sole presentation of relapsing B-type lymphoblastic leukemia in a 35-year-old man after 3 years of remission. METHODS: Case report. RESULTS: A 35-year-old man in complete remission of high-risk type B acute lymphoblastic leukemia (ALL-B) presented with acute vision loss in his left eye. Exudative retinal detachment was diagnosed at initial evaluation. Hematological and ocular studies were performed...
August 23, 2016: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/27876094/nitric-oxide-has-contrasting-age-dependent-effects-on-the-functionality-of-murine-hematopoietic-stem-cells
#18
Sapana Jalnapurkar, Shweta Singh, Moirangthem Ranjita Devi, Lalita Limaye, Vaijayanti Kale
BACKGROUND: The success of hematopoietic stem cell (HSC) transplantation is dependent on the quality of the donor HSCs. Some sources of HSCs display reduced engraftment efficiency either because of inadequate number (e.g., fetal liver and cord blood), or age-related dysfunction (e.g. in older individuals). Therefore, use of pharmacological compounds to improve functionality of HSCs is a forefront research area in hematology. METHODS: Lineage negative (Lin(-)) cells isolated from murine bone marrow or sort-purified Lin(-)Sca-1(+)c-Kit(+)CD34(-) (LSK-CD34(-)) were treated with a nitric oxide donor, sodium nitroprusside (SNP)...
November 22, 2016: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/27873493/decitabine-as-a-first-line-treatment-for-older-adults-newly-diagnosed-with-acute-myeloid-leukemia
#19
Hyunsung Park, Haerim Chung, Jungyeon Lee, Jieun Jang, Yundeok Kim, Soo Jeong Kim, Jin Seok Kim, Yoo Hong Min, June Won Cheong
PURPOSE: Decitabine, a DNA hypomethylating agent, was recently approved for use in Korea for older adults with acute myeloid leukemia (AML) who are not candidates for standard chemotherapy. This study aimed to evaluate the role of decitabine as a first-line treatment for older adults with AML. MATERIALS AND METHODS: Twenty-four patients with AML who received at least one course of decitabine (20 mg/m²/d intravenously for 5 days every 4 weeks) as a first-line therapy at Severance Hospital were evaluated retrospectively...
January 2017: Yonsei Medical Journal
https://www.readbyqxmd.com/read/27872734/allogeneic-hematopoietic-stem-cell-transplantation-for-adult-patients-with-fanconi-anemia
#20
Hosein Kamranzadeh Fumani, Mohammad Zokaasadi, Amir Kasaeian, Kamran Alimoghaddam, Asadollah Mousavi, Babak Bahar, Mohammad Vaezi, Ardeshir Ghavamzadeh
BACKGROUND AND OBJECTIVES: Fanconi anemia (FA) is a rare genetic disorder caused by an impaired DNA repair mechanism which leads to an increased tendency toward malignancies and progressive bone marrow failure. The only curative management available for hematologic abnormalities in FA patients is hematopoietic stem cell transplantation (HSCT). This study aimed to report the results of HSCT in adult or adolescent FA patients. PATIENTS AND METHODS: Twenty FA patients with ages of 16 or more who underwent HSCT between 2002 and 2015 enrolled in this study...
2016: Mediterranean Journal of Hematology and Infectious Diseases
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