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https://www.readbyqxmd.com/read/29158000/functional-genomic-fabrics-are-remodeled-in-a-mouse-model-of-chagasic-cardiomyopathy-and-restored-following-cell-therapy
#1
Dumitru A Iacobas, Sanda Iacobas, Herbert B Tanowitz, Antonio Campos de Carvalho, David C Spray
We previously found that, in a mouse model of Chagas cardiomyopathy (CCC), 18% of the 9390 quantified unigenes were significantly regulated by Trypanosoma cruzi infection. However, treatment with bone marrow-derived mononuclear cells (MNCs) resulted in 84% transcriptomic recovery. We have applied new algorithms to reanalyze these datasets with respect to specific pathways [CCC, cardiac muscle contraction (CMC) and chemokine signaling (CCS)]. In addition to the levels of expression of individual genes we also calculated gene expression variability and coordination of expression of each gene with all others...
November 17, 2017: Microbes and Infection
https://www.readbyqxmd.com/read/29156787/natural-compound-bavachalcone-promotes-the-differentiation-of-endothelial-progenitor-cells-and-neovascularization-through-the-ror%C3%AE-erythropoietin-ampk-axis
#2
Shuang Ling, Rong-Zhen Ni, Yunyun Yuan, Yan-Qi Dang, Qian-Mei Zhou, Shuang Liang, Fujiang Guo, Wei Feng, Yuanyuan Chen, Katsumi Ikeda, Yukio Yamori, Jin-Wen Xu
In cardiovascular diseases, endothelial function is impaired and the level of circulating endothelial progenitor cells (EPCs) is low. This study investigated whether the natural bioactive component bavachalcone (BavaC) induces the differentiation of EPCs and neovascularization in vivo; the underlying mechanisms were also examined. We observed that the treatment of rat bone marrow-derived cells with a very low dose of BavaC significantly promoted EPC differentiation. In our hindlimb ischemia models, low-dose BavaC administered orally for 14 days stimulated the recovery of ischemic hindlimb blood flow, increased circulating EPCs, and promoted capillary angiogenesis...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29155425/granulocyte-derived-tnf%C3%AE-promotes-vascular-and-hematopoietic-regeneration-in-the-bone-marrow
#3
Emily Bowers, Anastasiya Slaughter, Paul S Frenette, Rork Kuick, Oscar M Pello, Daniel Lucas
Endothelial cells are a critical component of the bone marrow (BM) stromal network, which maintains and regulates hematopoietic cells. Vascular regeneration precedes, and is necessary for, successful hematopoietic stem cell (HSC) transplantation, the only cure for most hematopoietic diseases. Recent data suggest that mature hematopoietic cells regulate BM stromal-cell function. Whether a similar cross-talk regulates the BM vasculature is not known. Here we found that donor hematopoietic cells act on sinusoidal endothelial cells and induce host blood vessel and hematopoietic regeneration after BM transplantation in mice...
November 20, 2017: Nature Medicine
https://www.readbyqxmd.com/read/29153694/evaluation-of-bone-marrow-function-with-immature-platelet-fraction-in-normal-pregnancy
#4
Ulrike Ratsch, Thorsten Kaiser, Holger Stepan, Alexander Jank
BACKGROUND: Bone marrow function in pregnancy is influencing blood cell concentration of platelets. The steady state of consumption, recovery and production of platelets is essential for coagulation and bleeding prevention. Reticulated platelets are an intermediate form of thrombocytes during thrombopoiesis representing platelet production. The immature platelet fraction (IPF) represents these platelets as percentage of all thrombocytes. Until now, there is little knowledge on IPF during pregnancy...
October 2017: Pregnancy Hypertension
https://www.readbyqxmd.com/read/29146709/alternatively-spliced-fibronectin-extra-domain-a-is-required-for-hemangiogenic-recovery-upon-bone-marrow-chemotherapy
#5
Alessandro Malara, Cristian Gruppi, Giuseppe Celesti, Vittorio Abbonante, Gianluca Viarengo, Luigi Laghi, Luigi De Marco, Andrés F Muro, Alessandra Balduini
No abstract text is available yet for this article.
November 16, 2017: Haematologica
https://www.readbyqxmd.com/read/29145456/regulation-of-the-bone-marrow-microenvironment-by-g-csf-effects-of-g-csf-on-acute-lymphoblastic-leukaemia
#6
Jordan Basnett, Vicki Xie, Adam Cisterne, Ken Bradstock, Linda Bendall
It has been suggested that disruption of the lymphoid niche by G-CSF may be of therapeutic benefit to patients with acute lymphoblastic leukaemia. We used a xenograft model to determine the effect of G-CSF on ALL progression in a minimal residual disease setting. Consistent with the effects on normal murine B cell progenitors, G-CSF slowed disease in the majority of ALL xenografts tested, suggesting that G-CSF may provide benefits beyond neutrophil recovery for ALL patients. However, two of eight xenografts demonstrated accelerated disease progression...
2017: PloS One
https://www.readbyqxmd.com/read/29141868/geographic-clonal-tracking-in-macaques-provides-insights-into-hspc-migration-and-differentiation
#7
Chuanfeng Wu, Diego A Espinoza, Samson J Koelle, E Lake Potter, Rong Lu, Brian Li, Di Yang, Xing Fan, Robert E Donahue, Mario Roederer, Cynthia E Dunbar
The geographic distribution of hematopoiesis at a clonal level is of interest in understanding how hematopoietic stem and progenitor cells (HSPCs) and their progeny interact with bone marrow (BM) niches during regeneration. We tagged rhesus macaque autologous HSPCs with genetic barcodes, allowing clonal tracking over time and space after transplantation. We found marked geographic segregation of CD34(+) HSPCs for at least 6 mo posttransplantation, followed by very gradual clonal mixing at different BM sites over subsequent months to years...
November 15, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29141658/thioredoxin-mitigates-radiation-induced-hematopoietic-stem-cell-injury-in-mice
#8
Pasupathi Sundaramoorthy, Qinhong Wang, Zhihong Zheng, Yiqun Jiao, Benny J Chen, Phuong L Doan, Nelson J Chao, Yubin Kang
BACKGROUND: Radiation exposure poses a significant threat to public health. Hematopoietic injury is one of the major manifestations of acute radiation sickness. Protection and/or mitigation of hematopoietic stem cells (HSCs) from radiation injury is an important goal in the development of medical countermeasure agents (MCM). We recently identified thioredoxin (TXN) as a novel molecule that has marked protective and proliferative effects on HSCs. In the current study, we investigated the effectiveness of TXN in rescuing mice from a lethal dose of total body radiation (TBI) and in enhancing hematopoietic reconstitution following a lethal dose of irradiation...
November 15, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29141446/myocardial-reparative-functions-of-exosomes-from-mesenchymal-stem-cells-are-enhanced-by-hypoxia-treatment-of-the-cells-via-transferring-microrna-210-in-an-nsmase2-dependent-way
#9
Jinyun Zhu, Kai Lu, Ning Zhang, Yun Zhao, Qunchao Ma, Jian Shen, Yinuo Lin, Pingping Xiang, Yaoliang Tang, Xinyang Hu, Jinghai Chen, Wei Zhu, Keith A Webster, Jian'an Wang, Hong Yu
Hypoxia treatment enhances paracrine effect of mesenchymal stem cells (MSCs). The aim of this study was to investigate whether exosomes from hypoxia-treated MSCs (Exo(H)) are superior to those from normoxia-treated MSCs (Exo(N)) for myocardial repair. Mouse bone marrow-derived MSCs were cultured under hypoxia or normoxia for 24 h, and exosomes from conditioned media were intramyocardially injected into infarcted heart of C57BL/6 mouse. Exo(H) resulted in significantly higher survival, smaller scar size and better cardiac functions recovery...
November 16, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29137845/enumeration-of-bone-marrow-plasmacytoid-dendritic-cells-by-multiparameter-flow-cytometry-as-a-prognostic-marker-following-allogeneic-hematopoietic-stem-cell-transplantation
#10
Ruijun Jeanna Su, Ralph Green, Mingyi Chen
Plasmacytoid dendritic cells (pDCs) promote tolerance in solid organ transplants and hematopoietic stem cell transplantation (HSCT). pDCs originate from CD34(+) hematopoietic progenitors. Following allogeneic hematopoietic stem cell transplant (allo-HSCT), pDC reconstitution in the BM and PB gradually attain levels similar to those in healthy individuals. We have investigated the recovery of pDC following allo-HSCT as a means to predict successful marrow engraftment. We retrospectively studied immune reconstitution of pDC in the BM of 48 patients following allo-HSCT for initial diagnoses of leukemia or other malignancies...
October 31, 2017: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/29125133/repair-of-articular-cartilage-defects-with-acellular-cartilage-sheets-in-a-swine-model
#11
Jixin Xue, Aijuan He, Yueqian Zhu, Yu Liu, Dan Li, Zongqi Yin, Wenjie Zhang, Wei Liu, Yilin Cao, Guangdong Zhou
Acellular cartilage sheets (ACSs) have been demonstrated as a good biomaterial for cartilage regeneration as a result of their natural cartilage matrix components, cartilage-specific structures, and good biocompatibility. However, it remains unknown whether allogeneic ACSs could promote cartilage regeneration and repair cartilage defects in a large animal model. The current study explored the feasibility of repairing articular cartilage defects using ACS scaffold with or without autologous bone marrow stromal cells (BMSCs) in a swine model...
November 10, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/29125102/role-of-methylprednisolone-in-treatment-of-spinal-cord-injured-with-bone-marrow-mesenchymal-stem-cells-transplantation-in-rats-and-its-effect-on-the-expressions-of-tumor-necrosis-factor-%C3%AE-and-interleukin-1%C3%AE
#12
Xin-Ming Yang, Yao-Yu Cheng, Zhen-Liang Zhang, Cong Kang
Objective To investigate the role of methylprednisolone (MP) in treatment of spinal cord injured (SCI) with bone marrow mesenchymal stem cells (BMSCs) transplantation in rats and its effect on the expressions of tumor necrosis factor-α(TNF-α) and interleukin-1β(IL-1β) at the local tissues.Methods Forty male Sprague-Dawley(SD) rats were used to establish the models of SCI according to the modified Allen's contusion method and then divided into four groups (n=10 in each group) by using random numbers table:MP group,BMSCs group,BMSCs+MP group,and control group...
October 30, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/29115709/safety-of-discharge-for-children-with-cancer-and-febrile-neutropenia-off-antibiotics-using-absolute-neutrophil-count-threshold-values-as-a-surrogate-marker-for-adequate-bone-marrow-recovery
#13
Matthew E Campbell, Debra L Friedman, Daniel E Dulek, Zhiguo Zhao, Yi Huang, Adam J Esbenshade
BACKGROUND: Febrile neutropenia (F&N) is common among pediatric oncology patients. However, there is a lack of clarity regarding parameters whereby such patients have demonstrated adequate bone marrow recovery for hospital discharge and empiric antibiotic discontinuation. PROCEDURE: A retrospective review was performed for 350 episodes of F&N occurring at a single institution between 2007 and 2012 in pediatric oncology patients who were afebrile for 24 hr and had no bacterial source identified...
November 8, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/29107664/eruption-of-lymphocyte-recovery-with-atypical-lymphocytes-mimicking-a-primary-cutaneous-t-cell-lymphoma-a-series-of-12-patients
#14
Charlotte Hurabielle, Emilie Sbidian, Helmut Beltraminelli, Brigitte Bouchindhomme, Catherine Chassagne-Clément, Brigitte Balme, Céline Bossard, Marie-Hélène Delfau-Larue, Pierre Wolkenstein, Olivier Chosidow, Catherine Cordonnier, Andrea Toma, Cécile Pautas, Nicolas Ortonne
Eruption of lymphocyte recovery (ELR) may occur during bone marrow aplasia after chemotherapies. We reviewed the clinical and pathologic features of 12 patients (male/female: 7/5, median age: 61years) with an atypical ELR histologically mimicking a primary cutaneous T-cell lymphoma (CTCL) such as Sézary Syndrome or CD30+ T-cell lymphoproliferative disorder (LPD). All the patients displayed an erythematous maculopapular eruption on the trunk and the limbs, associated with fever. All but one had received a polychemotherapy for an acute myeloid leukemia (n=10) or an urothelial carcinoma (n=1) before the occurrence of the skin eruption...
October 28, 2017: Human Pathology
https://www.readbyqxmd.com/read/29105392/mouse-bone-marrow-derived-mast-cells-induce-angiogenesis-by-tissue-engineering-in-rats-histological-evidence
#15
Ali Karimi, Rasoul Shahrooz, Rahim Hobbenaghi, Rahim Mohammadi, Esmaeil Mortaz
OBJECTIVES: Therapeutic angiogenesis is employed to induce vascular network formation and improve functional recovery in ischemia. The aim of this study is to find an appropriate method to recover local ischemic conditions. MATERIALS AND METHODS: In this experimental survey, 20 male Wistar rats weighing approximately 200-250 g were randomly divided into four experimental groups respectively: ischemia group in which the femoral artery was transected; phosphate buffer solution group (PBS) in which the femoral artery transected location was immersed with PBS; chitosan (CHIT) group in which the transected location was immersed in a 50 μL CHIT solution; and mast cell transplanted group in which the transected location was immersed with a mixture of 50 μL CHIT and 50 μL PBS that contained 1×10(6) mast cells...
January 2018: Cell Journal
https://www.readbyqxmd.com/read/29102597/predictors-for-requiring-re-induction-chemotherapy-in-acute-myeloid-leukemia-patients-with-residual-disease-on-day-14-bone-marrow-assessment
#16
Victoria R Nachar, Anthony J Perissinotti, Gianni B Scappaticci, Dale L Bixby, Bernard L Marini
PURPOSE: Day 14 bone marrow (BM) biopsies following standard induction in acute myeloid leukemia (AML) have a suboptimal ability to predict complete remission (CR). The decision to administer re-induction chemotherapy with residual disease on day 14 is variable and lacks clear guidance. METHODS: We retrospectively compared clinical and laboratory characteristics of adult patients with newly diagnosed, previously untreated AML who underwent 3+7 induction chemotherapy from January 2004 until February 2017...
November 2, 2017: Leukemia Research
https://www.readbyqxmd.com/read/29095439/epothilone-b-impairs-functional-recovery-after-spinal-cord-injury-by-increasing-secretion-of-macrophage-colony-stimulating-factor
#17
Liang Mao, Wei Gao, Shurui Chen, Ying Song, Changwei Song, Zipeng Zhou, Haosen Zhao, Kang Zhou, Wei Wang, Kunming Zhu, Chang Liu, Xifan Mei
The microtubule-stabilizing drug epothilone B (epoB) has shown potential value in the treatment of spinal cord injury (SCI) through diverse mechanisms. However, it remains elusive why a limited overall effect was observed. We aim to investigate the limiting factors underlying functional recovery promoted by epoB. The same SCI model treated by epoB was established as discussed previously. We used a cerebrospinal fluid (CSF) sample to assess the changes in cytokines in milieu of the SCI lesion site after epoB treatment...
November 2, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/29095311/the-relationship-between-iron-bone-marrow-stores-and-response-to-treatment-in-pediatric-acute-lymphoblastic-leukemia
#18
Alireza Moafi, Mozhdeh Ziaie, Marjan Abedi, Soheila Rahgozar, Nahid Reisi, Pardis Nematollahi, Hadi Moafi
Iron is an intracellular element whose accumulation in the body is associated with tissue damage. This study examines the effect of iron on pediatric acute lymphoblastic leukemia (ALL) and its "response to treatment." At the end of the first year of treatment, bone marrow iron store (BMIS) was evaluated in children with ALL and the relationship between iron store and minimal residual disease was investigated. Moreover, the 3-year disease-free survival (3-DFS) of patients was determined. Patients' BMIS were compared with that of subjects with normal bone marrow...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29093250/-values-of-fat-saturation-sequence-in-mri-for-juvenile-arthritis
#19
Jiapei Wang, Ling Wu, Shiling Zhong, Hanchun Yu, Yazhen Di, Mengjiao Shen, Nan Sun
To explore the values of fat saturation sequence in MRI for juvenile arthritis.
 Methods: A total of 1 131 cases with juvenile arthritis and 1 601 with symptomatic arthritis were examined by MRI normal T1 weighted imaging (T1WI) and T2 weighted imaging (T2WI) sequence and spectral presaturation attenuatedinversion recovery (SPAIR) T2 fat saturation sequence. All the images were independently evaluated by two senior doctors from the Department of Radiology and the Department of Pediatric Rheumatology and Immunology respectively to confirm the types and degree of pathological changes of joint tissues...
October 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/29093179/a-distinct-hematopoietic-stem-cell-population-for-rapid-multilineage-engraftment-in-nonhuman-primates
#20
Stefan Radtke, Jennifer E Adair, Morgan A Giese, Yan-Yi Chan, Zachary K Norgaard, Mark Enstrom, Kevin G Haworth, Lauren E Schefter, Hans-Peter Kiem
Hematopoietic reconstitution after bone marrow transplantation is thought to be driven by committed multipotent progenitor cells followed by long-term engrafting hematopoietic stem cells (HSCs). We observed a population of early-engrafting cells displaying HSC-like behavior, which persisted long-term in vivo in an autologous myeloablative transplant model in nonhuman primates. To identify this population, we characterized the phenotype and function of defined nonhuman primate hematopoietic stem and progenitor cell (HSPC) subsets and compared these to human HSPCs...
November 1, 2017: Science Translational Medicine
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