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https://www.readbyqxmd.com/read/28211939/allogeneic-hematopoietic-cell-transplantation-for-primary-refractory-acute-lymphoblastic-leukemia-a-report-from-the-acute-leukemia-working-party-of-the-ebmt
#1
Jiří Pavlů, Myriam Labopin, Anna K Zoellner, Ioanna Sakellari, Matthias Stelljes, Jürgen Finke, Renato Fanin, Gernot Stuhler, Boris V Afanasyev, Adrian J Bloor, Achilles Anagnostopoulos, Mohamad Mohty, Sebastian Giebel, Arnon Nagler
BACKGROUND: Patients with primary refractory acute lymphoblastic leukemia (PREF ALL) who fail to achieve a complete remission (CR) after ≥2 courses of chemotherapy have a dismal prognosis without undergoing allogeneic hematopoietic cell transplantation (HCT). To the authors' knowledge, there currently are no data regarding factors influencing transplantation outcomes. METHODS: The authors retrospectively studied outcomes of transplantation for cases of PREF ALL reported to European Society for Blood and Marrow Transplantation registry...
February 17, 2017: Cancer
https://www.readbyqxmd.com/read/28211153/the-prognostic-relevance-of-serum-lactate-dehydrogenase-and-mild-bone-marrow-reticulin-fibrosis-in-essential-thrombocythemia
#2
Mythri Mudireddy, Daniela Barraco, Curtis A Hanson, Animesh Pardanani, Naseema Gangat, Ayalew Tefferi
The 2016 World Health Organization (WHO) diagnostic criteria for myeloproliferative neoplasms (MPN) underscore the prognostically-relevant distinction between essential thrombocythemia (ET) and prefibrotic primary myelofibrosis (pre-PMF). In addition, leukocytosis has been identified as an important prognostic marker in otherwise WHO-defined ET. However, controversy remains regarding the objectivity of morphologic criteria in distinguishing ET from pre-PMF and the precise prognostic cutoff values for leukocytosis...
February 17, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28204822/melittin-inhibits-osteoclast-formation-through-the-downregulation-of-the-rankl-rank-signaling-pathway-and-the-inhibition-of-interleukin-1%C3%AE-in-murine-macrophages
#3
Jung-Yoon Choe, Seong-Kyu Kim
Melittin is a major toxic component of bee venom (Apis mellifera). It is not known whether melittin is involved in bone metabolism and osteoclastogenesis. The aim of this study was to determine the role of melittin in the regulation of osteoclastogenesis. In vitro osteoclastogenesis assays were performed using mouse RAW 264.7 cells and bone marrow-derived macrophages (BMMs) treated with receptor activator of nuclear factor-κB ligand (RANKL) and macrophage colony-stimulating factor (M-CSF). Morphologic and functional analyses for osteoclast-like multinucleated cells (MNCs) were performed by tartrate-resistant acid phosphatase (TRAP) staining, F-actin staining and pit formation methods...
February 3, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28203394/structural-features-of-bone-marrow
#4
REVIEW
Anatolii Romaniuk, Yuliia Lyndina, Vladyslav Sikora, Mykola Lyndin, Ludmyla Karpenko, Oksana Gladchenko, Igor Masalitin
PURPOSE: This article is devoted to the investigation of the structural features of the bone marrow of mature rats. MATERIALS AND METHODS: The investigation of the structural features of the bone marrow was performed on the femurs of the mature male rats. General structure of the organ was studied with hematoxylin-eosin and Van Gieson staining of samples. Certain features of the bone marrow structure were studied using immunohistochemical method (CD3, CD79α, S100, myeloperoxidase, and cyclin D1)...
September 2016: Interventional Medicine & Applied Science
https://www.readbyqxmd.com/read/28203345/sweet-s-syndrome-associated-with-clonal-hematopoiesis-of-indeterminate-potential-responsive-to-5-azacitidine
#5
REVIEW
George Yaghmour, Eric Wiedower, Bassam Yaghmour, Sara Nunnery, Eric Duncavage, Mike G Martin
Sweet's syndrome (SS) is a rare condition characterized by the abrupt appearance of painful skin lesions due to neutrophilic dermal infiltration. Hematologic neoplasms, particularly acute myeloid leukemia (AML) and myelodysplastic syndromes (MDSs), have been commonly reported in association with SS. Clonal hematopoiesis of indeterminate potential (CHIP) is an emerging entity that is a precursor state to myeloid neoplasms. CHIP has not been previously associated with SS. We report the case of a 71-year-old man who presented with recurrent, painful edematous and erythematous papules and nodules for 18 months despite treatment with corticosteroids...
February 2017: Therapeutic Advances in Hematology
https://www.readbyqxmd.com/read/28202390/systemic-injection-of-rpe65-programmed-bone-marrow-derived-cells-prevents-progression-of-chronic-retinal-degeneration
#6
Xiaoping Qi, S Louise Pay, Yuanqing Yan, James Thomas, Alfred S Lewin, Lung-Ji Chang, Maria B Grant, Michael E Boulton
Bone marrow stem and progenitor cells can differentiate into a range of non-hematopoietic cell types, including retinal pigment epithelium (RPE)-like cells. In this study, we programmed bone marrow-derived cells (BMDCs) ex vivo by inserting a stable RPE65 transgene using a lentiviral vector. We tested the efficacy of systemically administered RPE65-programmed BMDCs to prevent visual loss in the superoxide dismutase 2 knockdown (Sod2 KD) mouse model of age-related macular degeneration. Here, we present evidence that these RPE65-programmed BMDCs are recruited to the subretinal space, where they repopulate the RPE layer, preserve the photoreceptor layer, retain the thickness of the neural retina, reduce lipofuscin granule formation, and suppress microgliosis...
February 12, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28201959/differentiation-potential-of-mesenchymal-stem-cells-derived-from-adipose-tissue-vs-bone-marrow-toward-annulus-fibrosus-cells-in-vitro
#7
Yifei Zhou, Xuqi Hu, Xuhao Zheng, Yaosen Wu, Naifeng Tian, Huazi Xu, Xiaolei Zhang
This study was to compare differentiation potential of bone marrow stem cells (BMSCs) and adipose-derived stem cells (ADSCs) from Sprague-Dawley rats towards annulus fibrosus (AF)-like cells. Using coculture plates with 0.4μm pore size polyethylene terephthalate (PET) track-etched inserts (Corning,USA), MSCs and AF cells were cocultured with direct cell-to-cell contact up till 21 days. We evaluated the AF markers expression at the histological level and molecular level. Quantitative reverse-transcription polymerase chain reaction (qRT-PCR) results showed up regulation in AF marker gene expressions of both two MSCs after coculture...
February 13, 2017: Current Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28197346/allogeneic-transplant-in-elane-and-mefv-mutation-positive-severe-cyclic-neutropenia-review-of-prognostic-factors-for-secondary-severe-events
#8
Onyemaechi N Okolo, Emmanuel Katsanis, Seongseok Yun, Candace Y Reveles, Faiz Anwer
Objective and Importance. Cyclic neutropenia (CyN) is a rare autosomal dominant inherited disorder due to the mutation ELANE primarily affecting bone marrow stem cells and is characterized by recurrent neutropenia every 2 to 4 weeks. Symptoms vary from benign to severe, including death. Postulations on the cause of wide spectrum in symptom presentation include the possibility of other genetic mutations, such as MEFV. Recommended treatment for CyN is G-CSF to keep ANC higher to minimize risk of infection. Case...
2017: Case Reports in Hematology
https://www.readbyqxmd.com/read/28196090/the-uniqueness-of-morphological-features-of-pure-erythroid-leukemia-in-myeloid-neoplasm-with-erythroid-predominance-a-reassessment-using-criteria-revised-in-the-2016-world-health-organization-classification
#9
Po-Shen Ko, Yao-Chung Liu, Chiu-Mei Yeh, Jyh-Pyng Gau, Yuan-Bin Yu, Liang-Tsai Hsiao, Cheng-Hwai Tzeng, Po-Min Chen, Tzeon-Jye Chiou, Chia-Jen Liu, Jin-Hwang Liu
We reviewed 97 consecutive cases of myeloid neoplasm with erythroid predominance (MN-EP) between 2000 and 2015. Following 2016 WHO classification, MN-EP patients were classified into four groups. Eight pure erythroid leukemia (PEL) (including t-MN and AML-MRC morphologically fulfilled criteria for PEL) patients had dismal outcomes (median OS: 1 month) and showed more bone marrow fibrosis, worse performance status (PS) and higher serum lactate dehydrogenase (LDH) at diagnosis than the other groups. In the univariate analysis, risks of death in MN-EP patients included the morphologic features of PEL, very poor cytogenetic risk by IPSS-R, bone marrow fibrosis, leukocytosis, anemia, hypoalbuminemia, high LDH, and poor PS...
2017: PloS One
https://www.readbyqxmd.com/read/28195832/four-dimensional-printing-hierarchy-scaffolds-with-highly-biocompatible-smart-polymers-for-tissue-engineering-applications
#10
Shida Miao, Wei Zhu, Nathan J Castro, Jinsong Leng, Lijie Grace Zhang
The objective of this study was to four-dimensional (4D) print novel biomimetic gradient tissue scaffolds with highly biocompatible naturally derived smart polymers. The term "4D printing" refers to the inherent smart shape transformation of fabricated constructs when implanted minimally invasively for seamless and dynamic integration. For this purpose, a series of novel shape memory polymers with excellent biocompatibility and tunable shape changing effects were synthesized and cured in the presence of three-dimensional printed sacrificial molds, which were subsequently dissolved to create controllable and graded porosity within the scaffold...
October 2016: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28195090/mixed-phenotypic-acute-leukemia-series-from-tertiary-care-center
#11
Ravikiran N Pawar, Sambhunath Banerjee, Subhajit Bramha, Shekhar Krishnan, Arpita Bhattacharya, Vaskar Saha, Anupam Chakrapani, Saurabh Bhave, Mammen Chandy, Reena Nair, Mayur Parihar, Neeraj Arora, D K Mishra
INTRODUCTION: Mixed-phenotype acute leukemias (MPALs) are a heterogeneous group of rare leukemias constituting approximately 2%-5% of all leukemias, in which assigning a single lineage of origin is not possible. They are diagnosed by either the presence of antigens of more than one lineage or by the presence of dual population of blasts belonging to two or more lineages. We highlight the clinicopathological, immunophenotype, and genetic data of a cohort (n = 14) of patients diagnosed and treated at our center...
January 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28194153/nasal-polyp-derived-mesenchymal-stromal-cells-exhibit-lack-of-immune-associated-molecules-and-high-levels-of-stem-progenitor-cells-markers
#12
Pedro Wey Barbosa de Oliveira, Rogério Pezato, Juan Sebastian Henao Agudelo, Claudina Angela Perez-Novo, Wim Vanden Berghe, Niels Olsen Câmara, Danilo Candido de Almeida, Luís Carlos Gregorio
Mesenchymal stromal cells (MSCs) are considered adult progenitor stem cells and have been studied in a multitude of tissues. In this context, the microenvironment of nasal polyp tissue has several inflammatory cells, but their stroma compartment remains little elucidated. Hence, we isolated MSCs from nasal polyps Polyp-MSCs (PO-MSCs) and compared their molecular features and gene expression pattern with bone marrow-derived MSCs (BM-MSCs). Initially, both PO-MSCs and BM-MSCs were isolated, cultivated, and submitted to morphologic, differentiation, phenotypic, immunosuppressive, and gene expression assays...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28191761/angiogenic-potential-of-human-bone-marrow-derived-mesenchymal-stem-cells-in-chondrocyte-brick-enriched-constructs-promoted-stable-regeneration-of-craniofacial-cartilage
#13
Zhiye Li, Ruikai Ba, Zhifa Wang, Jianhua Wei, Yimin Zhao, Wei Wu
Craniofacial deformities caused by congenital defects or trauma remain challenges for clinicians, whereas current surgical interventions present limited therapeutic outcomes. Injection of bone marrow-derived mesenchymal stem cells (BMSCs) into the defect is highly desirable because such a procedure is microinvasive and grafts are more flexible to fill the lesions. However, preventing hypertrophic transition and morphological contraction remain significant challenges. We have developed an "all host derived" cell transplantation system composed of chondrocyte brick (CB)-enriched platelet-rich plasma (P) gel and BMSCs (B)...
February 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28188071/a-good-manufacturing-practice-grade-standard-protocol-for-exclusively-human-mesenchymal-stromal-cell-derived-extracellular-vesicles
#14
Karin Pachler, Thomas Lener, Doris Streif, Zsuzsanna A Dunai, Alexandre Desgeorges, Martina Feichtner, Michaela Öller, Katharina Schallmoser, Eva Rohde, Mario Gimona
BACKGROUND AIMS: Extracellular vesicles (EVs) released by mesenchymal stromal cells (MSCs) may contribute to biological processes such as tissue regeneration, immunomodulation and neuroprotection. Evaluation of their therapeutic potential and application in future clinical trials demands thorough characterization of EV content and production under defined medium conditions, devoid of xenogenic substances and serum-derived vesicles. Addressing the apparent need for such a growth medium, we have developed a medium formulation based on pooled human platelet lysate (pHPL), free from animal-derived xenogenic additives and depleted of EVs...
February 7, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28183661/a-microstructural-study-of-the-degradation-and-calcium-release-from-hydroxyapatite-calcium-oxide-ceramics-made-by-infiltration
#15
Qinghao Zhang, Eva Schmelzer, Jörg C Gerlach, Ian Nettleship
Hydroxyapatite pellets, partially densified in a low-temperature heat treatment, were infiltrated with calcium nitrate solution followed by in-situ precipitation of Ca(OH)2 and CaCO3. The infiltrated bodies were then densified to high relative density and the calcium carbonate transformed to calcium oxide during sintering and resulted in biphasic hydroxyapatite-CaO ceramics. This work investigated the influence of the infiltration on surface morphology, weight change, and microstructural-level degradation caused by exposure to saline at pH=7...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28181472/circulating-microfilariae-in-haematological-malignancies-do-they-have-a-role-in-pathogenesis
#16
L S Kerketta, K Ghosh
Filariasis is very common in tropical countries. It is endemic in the coastal areas of India. We report four cases of haematological malignancy where peripheral blood and bone marrow smears did not show any microfilariae but conventional cytogenetic preparations from all the four cases showed the presence of parasites. Their morphology confirmed the diagnosis of all cases as bancroftian filariasis. Therefore all types of cytogenetic preparations should be screened carefully in the endemic areas along the coastal zones of India for the presence of this parasite...
February 9, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28178294/histological-observation-of-a-gelatin-sponge-transplant-loaded-with-bone-marrow-derived-mesenchymal-stem-cells-combined-with-platelet-rich-plasma-in-repairing-an-annulus-defect
#17
Xiang Xu, Jianzhong Hu, Hongbin Lu
OBJECTIVE: To research the histological characteristics of a gelatin sponge transplant loaded with goat BMSCs (bone marrow-derived mesenchymal stem cells) combined with PRP (platelet-rich plasma) in repairing an annulus defect. METHOD: BMSCs were separated from the iliac crest of goats, sub-cultured and identified after the third generation. Then, PRP was obtained using blood from the jugular vein of goats via two degrees of centrifugation. In the animal experiments, the goats were divided into the following three groups: a sham group, an injury group and a therapeutic group...
2017: PloS One
https://www.readbyqxmd.com/read/28162154/-the-effect-of-semimature-dendritic-cell-and-the-levels-of-treg-on-transplantation-tolerance-of-hepatocytes-differentiated-from-mouse-embryonic-stem-cell
#18
C Zhang, W W Liao, B Cai, F R Liu, Q Ke, X F Zhu, X S He, A B Hu
Objective: To investigate the inducing effect and mechanism of semimature dendritic cell (smDCs) on transplantation tolerance of hepatocytes differentiated from mouse embryonic stem cells (ESCs), and to study the connections between smDCs and regulatory dendritic cells (regDCs). Methods: ESCs of 129 mouse labelled green fluorescent protein (GFP) were induced to hepatocytes by using previous methods. Meanwhile, bone marrow mononuclear cells of 129 mouse were induced to smDCs and regDCs. Moreover, the hepatocytes differentiated from 129 mouse ESCs were transplanted into liver of BALB/c mouse 3 days after infusing smDCs and regDCs suspension of 129 mouse into BALB/c mouse by tail vein respectively...
January 24, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28157196/effect-of-different-titanium-surfaces-on-maturation-of-murine-bone-marrow-derived-dendritic-cells
#19
Xiaofei Zheng, Fengjuan Zhou, Yifei Gu, Xiaobo Duan, Anchun Mo
Dendritic cells (DCs) play a pivotal role in the host response to implanted biomaterials. Osseointegration of titanium (Ti) implant is an immunological and inflammatory-driven process. However, the role of DCs in this complex process is largely unknown. This study aimed to investigate the effect of different Ti surfaces on DC maturation, and evaluate its subsequent potential on osteogenic differentiation of preosteoblasts. Murine bone marrow-derived DCs were seeded on Ti disks with different surface treatments, including pretreatment (PT), sandblasted/acid-etched (SLA) and modified SLA (modSLA) surface...
February 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28150318/determine-exogenous-human-ddah2-gene-function-in-rabbit-bone-marrow-derived-endothelial-progenitor-cells-in-vitro
#20
Sara Shoeibi, Shabnam Mohammadi, Hamid Reza Sadeghnia, Elahe Mahdipour, Majid Ghayour-Mobarhan
The in vitro amplification of endothelial progenitor cells (EPCs) is an important method because of its role in gene transferring and regenerative medicine. In this study, we isolated rabbit bone marrow-derived EPCs to further manipulation and overexpression of dimethylarginine dimethylaminohydrolase (DDAH) in EPCs. Isolated EPCs were cultured, expanded in endothelial basal medium. Morphology of EPCs and expression levels of surface markers detected using immunocytochemistry staining and through the use of flow cytometery...
February 1, 2017: Cell Biochemistry and Function
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