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Bone Marrow Research

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https://www.readbyqxmd.com/read/29955397/bet-inhibition-suppresses-s100a8-and-s100a9-expression-in-acute-myeloid-leukemia-cells-and-synergises-with-daunorubicin-in-causing-cell-death
#1
Helen J S Stewart, Sabah Chaudry, Asante Crichlow, Freya Luiling Feilding, Timothy J T Chevassut
S100A8 and S100A9 are both members of the S100 family and have been shown to play roles in myeloid differentiation, autophagy, apoptosis, and chemotherapy resistance. In this study we demonstrate that the BET-bromodomain inhibitor JQ1 causes rapid suppression of S100A8 and S100A9 mRNA and protein in a reversible manner. In addition, we show that JQ1 synergises with daunorubicin in causing AML cell death. Daunorubicin alone causes a dose- and time-dependent increase in S100A8 and S100A9 protein levels in AML cell lines which is overcome by cotreatment with JQ1...
2018: Bone Marrow Research
https://www.readbyqxmd.com/read/29888008/antimicrobial-induced-cytopenia-and-bone-marrow-hypocellularity-in-patients-with-cirrhosis
#2
Anupama Patil, Vikas Khillan, Monika Thakur, Pratibha Kale, Chhagan Bihari
There is great variation in cytopenias in cirrhotic patients with same severity and hypersplenism and their causative factors are not clear. Recent studies have highlighted the role of gut microbiome in regulation of constant and emergency hematopoiesis. Broad-spectrum antibiotics can disrupt the homeostatic or adaptive microbiota in cirrhosis, leading to impaired hematopoiesis and a higher susceptibility to infections. We studied all patients with cirrhosis with cytopenia (anemia, leucopenia, and/or thrombocytopenia), admitted in the Institute of Liver & Biliary Sciences, between January 2016 and July 2017, who underwent a bone marrow examination...
2018: Bone Marrow Research
https://www.readbyqxmd.com/read/29682352/optimization-of-ex-vivo-murine-bone-marrow-derived-immature-dendritic-cells-a-comparative-analysis-of-flask-culture-method-and-mouse-cd11c-positive-selection-kit-method
#3
Rahul Ashok Gosavi, Sukeshani Salwe, Sandeepan Mukherjee, Ritwik Dahake, Sweta Kothari, Vainav Patel, Abhay Chowdhary, Ranjana A Deshmukh
12-14 days of culturing of bone marrow (BM) cells containing various growth factors is widely used method for generating dendritic cells (DCs) from suspended cell population. Here we compared flask culture method and commercially available CD11c Positive Selection kit method. Immature BMDCs' purity of adherent as well as suspended cell population was generated in the decreasing concentration of recombinant-murine granulocyte-macrophage colony-stimulating factor (rmGM-CSF) in nontreated tissue culture flasks...
2018: Bone Marrow Research
https://www.readbyqxmd.com/read/29682351/comparative-analysis-of-cellular-and-growth-factor-composition-in-bone-marrow-aspirate-concentrate-and-platelet-rich-plasma
#4
Hisashi Sugaya, Tomokazu Yoshioka, Toshiki Kato, Yu Taniguchi, Hiroshi Kumagai, Kojiro Hyodo, Osamu Ohneda, Masashi Yamazaki, Hajime Mishima
The purpose of this study was to quantify the stem cell and growth factor (GF) contents in the bone marrow aspirate concentrate (BMAC) and platelet-rich plasma (PRP) prepared from whole blood using a protocol established in our laboratory. We examined 10 patients with osteonecrosis of the femoral head who were treated by autologous BMAC transplantation at our hospital between January 2015 and June 2015. We quantified CD34+ and CD31-CD45-CD90+CD105+ cells in BMAC and PRP by flow cytometry. Additionally, we measured various GFs, that is, basic fibroblast growth factor (b-FGF), platelet-derived growth factor-BB (PDGF-BB), vascular endothelial growth factor (VEGF), transforming growth factor- β 1 (TGF- β 1), and bone morphogenetic protein-2 (BMP-2) in BMAC and PRP using enzyme-linked immunosorbent assays and statistical analyses...
2018: Bone Marrow Research
https://www.readbyqxmd.com/read/29201465/a-reliable-and-reproducible-model-for-assessing-the-effect-of-different-concentrations-of-%C3%AE-solanine-on-rat-bone-marrow-mesenchymal-stem-cells
#5
Adriana Ordóñez-Vásquez, Lorenza Jaramillo-Gómez, Camilo Duran-Correa, Erandi Escamilla-García, Myriam Angélica De la Garza-Ramos, Fernando Suárez-Obando
Αlpha-solanine ( α -solanine) is a glycoalkaloid present in potato (Solanum tuberosum) . It has been of particular interest because of its toxicity and potential teratogenic effects that include abnormalities of the central nervous system, such as exencephaly, encephalocele, and anophthalmia. Various types of cell culture have been used as experimental models to determine the effect of α -solanine on cell physiology. The morphological changes in the mesenchymal stem cell upon exposure to α -solanine have not been established...
2017: Bone Marrow Research
https://www.readbyqxmd.com/read/28386485/feasibility-and-efficacy-of-autologous-bone-marrow-aspirate-transplantation-combined-with-human-parathyroid-hormone-1-34-administration-to-treat-osteonecrosis-in-a-rabbit-model
#6
Takeshi Makihara, Tomokazu Yoshioka, Hisashi Sugaya, Katsuya Aoto, Hiroshi Wada, Kenta Uemura, Kenta Tanaka, Hiroshi Akaogi, Masashi Yamazaki, Hajime Mishima
No studies have examined the transplantation of a bone marrow aspirate (BMA) containing mesenchymal stem cells (MSCs) combined with human parathyroid hormone 1-34 (hPTH1-34) administration. Therefore, we evaluated the feasibility and efficacy of autologous BMA transplantation combined with hPHT1-34 administration in a bone necrosis model. The metatarsal bones of rabbits were necrotized using liquid nitrogen, and the rabbits received a BMA transplantation or saline injection followed by hPTH1-34 (30 μg/kg) or saline administration three times per week (n = 3-4 per group)...
2017: Bone Marrow Research
https://www.readbyqxmd.com/read/27830092/cost-implications-of-comorbidity-for-autologous-stem-cell-transplantation-in-elderly-patients-with-multiple-myeloma-using-seer-medicare
#7
Gunjan L Shah, Aaron Winn, Pei-Jung Lin, Andreas Klein, Kellie A Sprague, Hedy P Smith, Rachel Buchsbaum, Joshua T Cohen, Kenneth B Miller, Raymond Comenzo, Susan K Parsons
Comorbidity is more common in older patients and can increase the cost of care by increasing toxicity. Using the SEER-Medicare database from 2000 to 2007, we examined the costs and life-year benefit of Auto-HSCT for MM patients over the age of 65 by evaluating the difference over time relative to comorbidity burden. One hundred ten patients had an Auto-HSCT in the early time period (2000-2003) and 160 in the late time period (2004-2007). Patients were divided by a Charlson Comorbidity Index (CCI) of 0 or greater than 1 (CCI1+)...
2016: Bone Marrow Research
https://www.readbyqxmd.com/read/27774320/awareness-knowledge-and-acceptance-of-haematopoietic-stem-cell-transplantation-for-sickle-cell-anaemia-in-nigeria
#8
Adewumi Adediran, Modu Baba Kagu, Tamunomieibi Wakama, Aliyu Ahmadu Babadoko, Dapus Obadiah Damulak, Sunday Ocheni, Marcus Inyama Asuquo
Background. Sickle cell anaemia (SCA) is an inherited condition whose clinical manifestations arise from the tendency of haemoglobin to polymerize and deform red blood cells into characteristic sickle shape. Allogeneic bone marrow transplantation offers a cure. The aim of this study was to determine the level of awareness, knowledge, and acceptance of this beneficial procedure in Nigeria. Materials and Methods. This multicentre cross-sectional study was conducted in 7 tertiary hospitals in Nigeria in 2015. Approval was obtained from each institution's research and ethics committee...
2016: Bone Marrow Research
https://www.readbyqxmd.com/read/27057356/a-simplified-method-for-the-aspiration-of-bone-marrow-from-patients-undergoing-hip-and-knee-joint-replacement-for-isolating-mesenchymal-stem-cells-and-in-vitro-chondrogenesis
#9
Subhash C Juneja, Sowmya Viswanathan, Milan Ganguly, Christian Veillette
The procedure for aspiration of bone marrow from the femur of patients undergoing total knee arthroplasty (TKA) or total hip arthroplasty (THA) may vary from an OR (operating room) to OR based on the surgeon's skill and may lead to varied extent of clotting of the marrow and this, in turn, presents difficulty in the isolation of mesenchymal stem cells (MSCs) from such clotted bone marrow. We present a simple detailed protocol for aspirating bone marrow from such patients, isolation, and characterization of MSCs from the aspirated bone marrow specimens and show that the bone marrow presented no clotting or exhibited minimal clotting...
2016: Bone Marrow Research
https://www.readbyqxmd.com/read/26998362/role-of-microvessel-density-and-vascular-endothelial-growth-factor-in-angiogenesis-of-hematological-malignancies
#10
Rashika Chand, Harish Chandra, Smita Chandra, Sanjiv Kumar Verma
Angiogenesis plays an important role in progression of tumor with vascular endothelial growth factor (VEGF) being key proangiogenic factor. It was intended to study angiogenesis in different hematological malignancies by quantifying expression of VEGF and MVD in bone marrow biopsy along with serum VEGF levels and observing its change following therapy. The study included 50 cases of hematological malignancies which were followed for one month after initial therapy along with 30 controls. All of them were subjected to immunostaining by anti-VEGF and factor VIII antibodies on bone marrow biopsy along with the measurement of serum VEGF levels...
2016: Bone Marrow Research
https://www.readbyqxmd.com/read/26640712/very-long-term-stability-of-mixed-chimerism-after-allogeneic-hematopoietic-stem-cell-transplantation-in-patients-with-hematologic-malignancies
#11
Emmanuel Levrat, Eddy Roosnek, Stavroula Masouridi, Bilal Mohty, Marc Ansari, Jean Villard, Jakob R Passweg, Yves Chalandon
The objective of this study is to analyze the evolution of chimerism of all patients transplanted for hematologic malignancies in our unit during a 20-year period, alive without relapse at 1 year after allogeneic hematopoietic stem cell transplantation (HSCT). Chimerism was tested using short tandem repeat polymorphisms after separation into mononuclear cells and granulocytes by Ficoll density gradient centrifugation. Of 155 patients studied, 89 had full chimerism (FC), 36 mononuclear cells mixed chimerism (MNC-MC), and 30 granulocytic MC with or without mononuclear cells MC (Gran-MC)...
2015: Bone Marrow Research
https://www.readbyqxmd.com/read/26346476/cigarette-smoking-is-associated-with-a-lower-concentration-of-cd105-bone-marrow-progenitor-cells
#12
Shaul Beyth, Rami Mosheiff, Ori Safran, Anat Daskal, Meir Liebergall
Cigarette smoking is associated with musculoskeletal degenerative disorders, delayed fracture healing, and nonunion. Bone marrow progenitor cells (BMPCs), known to express CD105, are important in local trophic and immunomodulatory activity and central to musculoskeletal healing/regeneration. We hypothesized that smoking is associated with lower levels of BMPC. Iliac bone marrow samples were collected from individuals aged 18-65 years during the first steps of pelvic surgery, under IRB approval with informed consent...
2015: Bone Marrow Research
https://www.readbyqxmd.com/read/25874131/comparing-two-types-of-rabbit-atg-prior-to-reduced-intensity-conditioning-allogeneic-hematopoietic-sct-for-hematologic-malignancies
#13
Sandra Paiano, Eddy Roosnek, Yordanka Tirefort, Monika Nagy-Hulliger, Stavroula Masouridi, Emmanuel Levrat, Michael Bernimoulin, Saadia Huguet, Alessandro Casini, Thomas Matthes, Kaveh Samii, Jakob R Passweg, Yves Chalandon
Different rabbit polyclonal antilymphocyte globulins (ATGs) are used in allogeneic hematopoietic stem cell transplantation (alloHSCT) to prevent graft-versus-host disease (GvHD). We compared 2 different ATGs in alloHSCT after reduced intensity conditioning (RIC) for hematological malignancies. We reviewed 30 alloHSCT for hematologic malignancies performed between 2007 and 2010 with fludarabine and i.v. busulfan as conditioning regimen. Patients alternatingly received Thymoglobulin or ATG-F. Median followup was 3...
2015: Bone Marrow Research
https://www.readbyqxmd.com/read/25610653/selective-migration-of-subpopulations-of-bone-marrow-cells-along-an-sdf-1%C3%AE-and-atp-gradient
#14
Michael Laupheimer, Anna Skorska, Jana Große, Gudrun Tiedemann, Gustav Steinhoff, Robert David, Cornelia A Lux
Both stem cell chemokine stromal cell-derived factor-1α (SDF-1α) and extracellular nucleotides such as adenosine triphosphate (ATP) are increased in ischemic myocardium. Since ATP has been reported to influence cell migration, we analysed the migratory response of bone marrow cells towards a combination of SDF-1 and ATP. Total nucleated cells (BM-TNCs) were isolated from bone marrow of cardiac surgery patients. Migration assays were performed in vitro. Subsequently, migrated cells were subjected to multicolor flow cytometric analysis of CD133, CD34, CD117, CD184, CD309, and CD14 expression...
2014: Bone Marrow Research
https://www.readbyqxmd.com/read/25295194/the-rag-model-a-new-paradigm-for-genetic-risk-stratification-in-multiple-myeloma
#15
Steven M Prideaux, Emma Conway O'Brien, Timothy J Chevassut
Molecular studies have shown that multiple myeloma is a highly genetically heterogonous disease which may manifest itself as any number of diverse subtypes each with variable clinicopathological features and outcomes. Given this genetic heterogeneity, a universal approach to treatment of myeloma is unlikely to be successful for all patients and instead we should strive for the goal of personalised therapy using rationally informed targeted strategies. Current DNA sequencing technologies allow for whole genome and exome analysis of patient myeloma samples that yield vast amounts of genetic data and provide a mutational overview of the disease...
2014: Bone Marrow Research
https://www.readbyqxmd.com/read/25276435/tet2-inhibits-differentiation-of-embryonic-stem-cells-but-does-not-overcome-methylation-induced-gene-silencing
#16
Louis Norman, Paul Tarrant, Timothy Chevassut
TET2 is a methylcytosine dioxygenase that is frequently mutated in myeloid malignancies, notably myelodysplasia and acute myeloid leukemia. TET2 catalyses the conversion of 5'-methylcytosine to 5'-hydroxymethylcytosine within DNA and has been implicated in the process of genomic demethylation. However, the mechanism by which TET2 loss of function results in hematopoietic dysplasia and leukemogenesis is poorly understood. Here, we show that TET2 is expressed in undifferentiated embryonic stem cells and that its knockdown results in reduction of 5'-hydroxymethylcytosine in genomic DNA...
2014: Bone Marrow Research
https://www.readbyqxmd.com/read/25147739/molecular-regulation-of-bone-marrow-metastasis-in-prostate-and-breast-cancer
#17
REVIEW
Fakher Rahim, Saeideh Hajizamani, Esmaeil Mortaz, Ahmad Ahmadzadeh, Mohammad Shahjahani, Saeid Shahrabi, Najmaldin Saki
Metastasis is a multistep process, which refers to the ability to leave a primary tumor through circulation toward the distant tissue and form a secondary tumor. Bone is a common site of metastasis, in which osteolytic and osteoblastic metastasis are observed. Signaling pathways, chemokines, growth factors, adhesion molecules, and cellular interactions as well as miRNAs have been known to play an important role in the development of bone metastasis. These factors provide an appropriate environment (soil) for growth and survival of metastatic tumor cells (seed) in bone marrow microenvironment...
2014: Bone Marrow Research
https://www.readbyqxmd.com/read/24876970/autologous-graft-versus-host-disease-an-emerging-complication-in-patients-with-multiple-myeloma
#18
Anu Batra, Michele Cottler-Fox, Terry Harville, Bobbie S Rhodes-Clark, Issam Makhoul, Mayumi Nakagawa
Autologous graft versus host disease (autoGVHD) is a rare transplant complication with significant morbidity and mortality. It has been hypothesized that patients with multiple myeloma might be predisposed to autoGVHD through dysregulation of the immune response resulting from either their disease, the immunomodulatory agents (IMiDs) used to treat it, or transplant conditioning regimen. Hematopoietic progenitor cell (HPC) products were available from 8 multiple myeloma patients with biopsy-proven autoGVHD, 16 matched multiple myeloma patients who did not develop autoGVHD, and 7 healthy research donors...
2014: Bone Marrow Research
https://www.readbyqxmd.com/read/24860670/combination-of-complement-dependent-cytotoxicity-and-relative-fluorescent-quantification-of-hla-length-polymorphisms-facilitates-the-detection-of-a-loss-of-heterozygosity
#19
Klaus Witter, Roland Reibke, Marion Subklewe, Robert Zahn, Teresa Kauke, Karsten Spiekermann, Michael Spannagl, Johanna Tischer, Wolfgang Hiddemann, Andrea Dick
Loss of heterozygosity (LOH) is a common event in malignant cells. In this work we introduce a new approach to identify patients with loss of heterozygosity in the HLA region either at first diagnosis or after HLA mismatched allogeneic HSCT. Diagnosis of LOH requires a high purity of recipient target cells. FACS is time consuming and also frequently prevented by rather nonspecific or unknown immune phenotype. The approach for recipient cell enrichment is based on HLA targeted complement-dependent cytotoxicity (CDC)...
2014: Bone Marrow Research
https://www.readbyqxmd.com/read/24822129/bone-marrow-vascular-niche-home-for-hematopoietic-stem-cells
#20
REVIEW
Ningning He, Lu Zhang, Jian Cui, Zongjin Li
Though discovered later than osteoblastic niche, vascular niche has been regarded as an alternative indispensable niche operating regulation on hematopoietic stem cells (HSCs). As significant progresses gained on this type niche, it is gradually clear that the main work of vascular niche is undertaking to support hematopoiesis. However, compared to what have been defined in the mechanisms through which the osteoblastic niche regulates hematopoiesis, we know less in vascular niche. In this review, based on research data hitherto we will focus on component foundation and various functions of vascular niche that guarantee the normal hematopoiesis process within bone marrow microenvironments...
2014: Bone Marrow Research
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