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https://www.readbyqxmd.com/read/28934227/hemorrhage-enhances-cytokine-complement-component-3-and-caspase-3-and-regulates-micrornas-associated-with-intestinal-damage-after-whole-body-gamma-irradiation-in-combined-injury
#1
Juliann G Kiang, Joan T Smith, Marsha N Anderson, Thomas B Elliott, Paridhi Gupta, Nagaraja S Balakathiresan, Radha K Maheshwari, Barbara Knollmann-Ritschel
Hemorrhage following whole-body γ-irradiation in a combined injury (CI) model increases mortality compared to whole-body γ-irradiation alone (RI). The decreased survival in CI is accompanied by increased bone marrow injury, decreased hematocrit, and alterations of miRNA in the kidney. In this study, our aim was to examine cytokine homeostasis, susceptibility to systemic bacterial infection, and intestinal injury. More specifically, we evaluated the interleukin-6 (IL-6)-induced stress proteins including C-reactive protein (CRP), complement 3 (C3), Flt-3 ligand, and corticosterone...
2017: PloS One
https://www.readbyqxmd.com/read/28933777/generation-and-use-of-a-humanized-bone-marrow-ossicle-niche-for-hematopoietic-xenotransplantation-into-mice
#2
Andreas Reinisch, David Cruz Hernandez, Katharina Schallmoser, Ravindra Majeti
Xenotransplantation is frequently used to study normal and malignant hematopoiesis of human cells. However, conventional mouse xenotransplantation models lack essential human-specific bone-marrow (BM)-microenvironment-derived survival, proliferation, and self-renewal signals for engraftment of normal and malignant blood cells. As a consequence, many human leukemias and other hematologic disorders do not robustly engraft in these conventional models. Here, we describe a complete workflow for the generation of humanized ossicles with an accessible BM microenvironment that faithfully recapitulates normal BM niche morphology and function...
October 2017: Nature Protocols
https://www.readbyqxmd.com/read/28931727/co-culture-of-allogenic-dbm-and-bmscs-in-the-knee-joint-cavity-of-rabbits-for-cartilage-tissue-engineering
#3
Bin Xu, Rui Wang, Hao Wang, Hong-Gang Xu
This study aims to assess co-culture of allogenic decalcified bone matrix (DBM) and bone marrow mesenchymal stem cells (BMSCs) in the knee joint cavity of rabbits for cartilage tissue engineering. Rabbits were assigned to an in-vitro group, an in-vivo group and a blank control group. At the 4(th), 8(th) and 12(th) week, samples from all groups were collected for hematoxylin-eosin (HE) staining and streptavidin-perosidase (SP) method. The morphological analysis software was used to calculate the average absorbance value (A value)...
September 20, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28926092/key-genes-regulating-the-liposecretion-process-of-mature-adipocytes
#4
Giulia Maurizi, Tiina Petäistö, Angela Maurizi, Lucio Della Guardia
White mature adipocytes (MAs) are plastic cells able to reversibly transdifferentiate toward fibroblast-like cells maintaining stem cell gene signatures. The main morphologic aspect of this transdifferentiation process, called liposecretion, is the secretion of large lipid droplets and the development of organelles necessary for exocrine secretion. There is a considerable interest in the adipocyte plastic properties involving liposecretion process, but the molecular details are incompletely explored. This review analyzes the gene expression of MAs isolated from human subcutaneous fat tissue with respect to bone marrow (BM)-derived mesenchymal stem cells (MSC) focusing on gene regulatory pathways involved into cellular morphology changes, cellular proliferation and transports of molecules through the membrane, suggesting potential ways to guide liposecretion...
September 19, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28924349/autophagy-promotes-degradation-of-polyethyleneimine-alginate-nanoparticles-in-endothelial-progenitor-cells
#5
Guo-Dong Wang, Yu-Zhen Tan, Hai-Jie Wang, Pei Zhou
Polyethyleneimine (PEI)-alginate (Alg) nanoparticle (NP) is a safe and effective vector for delivery of siRNA or DNA. Recent studies suggest that autophagy is related to cytotoxicity of PEI NPs. However, contribution of autophagy to degradation of PEI-Alg NPs remains unknown. CD34(+)VEGFR-3(+) endothelial progenitor cells isolated from rat bone marrow were treated with 25 kDa branched PEI modified by Alg. After treatment with the NPs, morphological changes and distribution of the NPs in the cells were examined with scanning and transmission electron microscopies...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28910695/mds-classification-is-improving-in-an-era-of-the-who-2016-criteria-of-mds-a-population-based-analysis-among-9159-mds-patients-diagnosed-in-the-netherlands
#6
Avinash G Dinmohamed, Otto Visser, Eduardus F M Posthuma, Peter C Huijgens, Pieter Sonneveld, Arjan A van de Loosdrecht, Mojca Jongen-Lavrencic
BACKGROUND: Morphologic and cytogenetic assessments are required to characterize diagnostic and prognostic features of myelodysplastic syndromes (MDS). We assessed whether these assessments were performed among newly diagnosed MDS patients in the Netherlands. METHODS: MDS cases were retrieved from the nationwide Netherlands Cancer Registry (N=9159; period 2001-2014) and the regional PHAROS MDS registry (N=676; period 2008-2011). RESULTS: The proportion of unclassified MDS decreased from 58% in 2001 to 13% in 2014...
September 11, 2017: Cancer Epidemiology
https://www.readbyqxmd.com/read/28905085/-focal-lesions-in-whole-body-mri-in-multiple-myeloma-quantification-of-tumor-mass-and-correlation-with-disease-related-parameters-and-prognosis
#7
S C Brandelik, J Krzykalla, T Hielscher, J Hillengass, J K Kloth, H U Kauczor, M A Weber
BACKGROUND AND OBJECTIVES: In this study, we evaluated methods of quantification of tumor mass in whole-body MRI (wb-MRI) in multiple myeloma and correlated these with disease-related parameters in serum and bone marrow. MATERIALS AND METHODS: We retrospectively evaluated wb-MRIs of 52 patients with focal infiltration pattern and a total of 700 focal lesions (subsequently called lesions). We determined the longest diameter (LD), the segmented volume (SV), and the morphology (spherical or non-spherical)...
September 13, 2017: Der Radiologe
https://www.readbyqxmd.com/read/28898055/a-carbon-nanotube-optical-reporter-maps-endolysosomal-lipid-flux
#8
Prakrit V Jena, Daniel Roxbury, Thomas V Galassi, Leila Akkari, Christopher P Horoszko, David B Iaea, Januka Budhathoki-Uprety, Nina Pipalia, Abigail S Haka, Jackson D Harvey, Jeetain Mittal, Frederick R Maxfield, Johanna A Joyce, Daniel A Heller
Lipid accumulation within the lumen of endolysosomal vesicles is observed in various pathologies including atherosclerosis, liver disease, neurological disorders, lysosomal storage disorders, and cancer. Current methods cannot measure lipid flux specifically within the lysosomal lumen of live cells. We developed an optical reporter, composed of a photoluminescent carbon nanotube of a single chirality, that responds to lipid accumulation via modulation of the nanotube's optical band gap. The engineered nanomaterial, composed of short, single-stranded DNA and a single nanotube chirality, localizes exclusively to the lumen of endolysosomal organelles without adversely affecting cell viability or proliferation or organelle morphology, integrity, or function...
September 12, 2017: ACS Nano
https://www.readbyqxmd.com/read/28894565/hematological-characteristics-of-yemeni-adults-and-children-with-visceral-leishmaniasis-could-eosinopenia-be-a-suspicion-index
#9
Jameel Al-Ghazaly, Waled Al-Dubai, Munasser Abdullah, Leila Al-Gharasi
BACKGROUND AND OBJECTIVES: Delay in the diagnosis of visceral leishmaniasis (VL) particularly in non-endemic areas is associated with higher mortality. In our experience, we found that marked bone marrow eosinopenia was a very frequent accompaniment of VL and might be a useful clue for the diagnosis, which indicates the opportunity for further morphological assessment. The aim of this study was to describe the hematological characteristics including peripheral blood and bone marrow findings of Yemeni adults and children with VL...
2017: Mediterranean Journal of Hematology and Infectious Diseases
https://www.readbyqxmd.com/read/28894288/altered-adipose-derived-stem-cell-characteristics-in-macrodactyly
#10
Xi Yang, Yongkang Jiang, Gang Han, Yuan Shi, Shengbo Zhou, Feng Ni, Bin Wang
Macrodactyly is a congenital disease characterized by aggressive overgrowth of adipose tissue in digits or limbs frequently accompanied with hyperostosis and nerve enlargement; its pathological mechanism is poorly understood. Adipose-derived stem cells (ASCs) have been extensively studied in tissue engineering and regenerative medicine as an ideal alternative substitute for bone marrow-derived mesenchymal stem cells (BM-MSCs), but their pathological role is largely unknown. In this study, ASCs from macrodactyly adipose tissues (Mac-ASCs) were isolated and compared to ASCs derived from the normal abdominal subcutaneous adipose tissue (Sat-ASCs) for cell morphology, surface marker expression, proliferation rate, and tri-lineage differentiation potential...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28892912/important-diagnostic-clues-for-diagnosing-splenic-marginal-zone-lymphoma-in-absence-of-splenic-histology
#11
Anisha Mohanpuria, Vijay Kumar, Pooja Suteri, Sadhna Marwah, Abhay Shankar Nigam
Splenic Marginal Zone Lymphoma (SMZL) is a rare B-cell neoplasm comprising less than 2% of non-Hodgkin lymphomas. We hereby report a case of SMZL in a 66-year-old female who presented with fever and massive splenomegaly. Peripheral blood smear examination showed atypical lymphoid cells showing variable cytoplasmic processes. Flowcytometric immunophenotyping of peripheral blood showed tumour cells which were found to be positive for CD19, CD79b and showing kappa light chain restriction along with lack of expression for CD5, CD10, CD23, CD103 and lambda...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28891194/suspended-graphene-oxide-nanoparticle-for-accelerated-multilayer-osteoblast-attachment
#12
Tahereh Foroutan, Negin Nazemi, Mohadeseh Tavana, Mohammad Zaman Kassaee, Elaheh Motamedi, Shima Soieshargh, Hadi Zare Zardini
Mimicking bone tissues having layered structures is still a significant challenge because of the lack of technologies to assemble osteoblast cell types into bone structures. One of the promising and attractive materials in biomedical and different engineering fields is graphene and graphene-based nanostructures such as graphene oxide (GO) because of their unique properties. In most studies, GO was synthesized using chemical vapor deposition (CDV) method, and was coated on the substrate. In this study, we proposed a simple technique for assembly of cells that facilitates the construction of osteoblast -like structures using suspended GO synthesized by graphite powder, H2SO4, and KMnO4...
September 10, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28884706/biological-features-of-bone-marrow-mesenchymal-stromal-cells-in-childhood-acute-lymphoblastic-leukemia
#13
Stella Genitsari, Eftichia Stiakaki, Chryssoula Perdikogianni, Georgia Martimianaki, Iordanis Pelagiadis, Margarita Pesmatzoglou, Maria Kalmanti, Helen Dimitriou
OBJECTIVE: Mesenchymal Stromal Cells (MSC) have a supportive role in hematopoiesis and as components of the bone marrow microenvironment may present alterations during ALL and be affected by chemotherapeutic agents. We examined the biological and functional characteristics of MSC at ALL diagnosis and treatment and their effect on MSC qualitative properties. MATERIALS AND METHODS: Immunophenotypic characterization, evaluation of clonogenicity and proliferative capacity were performed...
September 8, 2017: Turkish Journal of Haematology: Official Journal of Turkish Society of Haematology
https://www.readbyqxmd.com/read/28871128/synergistic-effect-of-bdnf-and-fgf2-in-efficient-generation-of-functional-dopaminergic-neurons-from-human-mesenchymal-stem-cells
#14
Manisha Singh, Anupama Kakkar, Rinkey Sharma, O P Kharbanda, Nitika Monga, Manish Kumar, Shantanu Chowdhary, Balram Airan, Sujata Mohanty
To understand the process of neurogenesis, generation of functional dopaminergic (DAergic) neurons from human mesenchymal stem cells (hMSCs) is important. BDNF has been reported to be responsible for inducing neuronal maturation and functionality. Previously, we have reported the efficient generation of neurons from human bone marrow derived MSCs using FGF2 alone. We hypothesize that hMSCs from various tissues [(bone marrow (BM), adipose tissue (AD) and dental pulp (DP)], if treated with BDNF on 9(th) day of induction, alongwith FGF2 will generate functional DAergic neurons...
September 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28866671/autoimmune-myelofibrosis-clinical-features-course-and-outcome
#15
Caroline I Piatek, Maria E Vergara-Lluri, Vinod Pullarkat, Imran N Siddiqi, Casey O'Connell, Russell K Brynes, Donald I Feinstein
BACKGROUND: Autoimmune myelofibrosis (AIMF) is an underrecognized cause of nonmalignant bone marrow fibrosis which occurs in the presence or absence of a defined systemic autoimmune disease. Patients with AIMF present with cytopenias and autoantibodies, and have a distinctive nonclonal myelofibrosis on bone marrow examination. AIMF is distinguished from primary myelofibrosis by the absence of splenomegaly, eosinophilia, or basophilia, and the absence of abnormal myeloid, erythroid, or megakaryocytic morphology...
September 2, 2017: Acta Haematologica
https://www.readbyqxmd.com/read/28864252/design-of-protein-delivery-systems-by-mimicking-extracellular-mechanisms-for-protection-of-growth-factors
#16
Carla Silva, Agatha Carretero, Diana Soares da Costa, Rui L Reis, Ramon Novoa-Carballal, Iva Pashkuleva
Heparin sulfate proteoglycans (HSPGs) are responsible for the storage and stabilization of numerous growth factors in the extracellular matrix. In this complex native environment, the efficient binding of the growth factors is determined by multivalent, specific and reversible electrostatic interactions between the sulfate groups of HSPGs and the positively charged amino acids of the growth factor. Inspired by this naturally occurring stabilization process, we propose the use of diblock copolymers of heparin and polyethylene glycol (Hep-b-PEG) for protection and delivery of FGF-2...
August 29, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28862206/lysosomal-storage-disorders-morphologic-appraisal-in-indian-population
#17
Dinesh Pradhan, Neelam Varma, Ashmita Gami, Kanwaljeet Singh Hura, Sambit K Mohanty
BACKGROUND: Lysosomal storage disorders (LSDs) comprise a group of at least 50 distinct genetic diseases, each one resulting from the deficiency of a particular lysosomal enzyme involved in metabolism. We attempt to study and further subclassify pediatric LSDs into Gaucher's and non-Gaucher's category based on the morphologic variables seen in the bone marrow aspiration smears and trephine biopsy sections. MATERIALS AND METHODS: Pediatric (<12 years age) cases of LSDs diagnosed by bone marrow aspiration and trephine biopsy specimens, in the last 12 years period, were retrieved...
July 2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28860067/a-novel-role-for-osteopontin-in-macrophage-mediated-amyloid-%C3%AE-clearance-in-alzheimer-s-models
#18
Altan Rentsendorj, Julia Sheyn, Dieu-Trang Fuchs, David Daley, Brenda C Salumbides, Hannah E Schubloom, Nadav J Hart, Songlin Li, Eric Y Hayden, David B Teplow, Keith L Black, Yosef Koronyo, Maya Koronyo-Hamaoui
Osteopontin (OPN), a matricellular immunomodulatory cytokine highly expressed by bone marrow (BM)-derived myelomonocytes, regulates immune cell migration, communication, and response to brain injury. Enhanced cerebral recruitment of monocytes and macrophages by immunomodulation using glatiramer acetate (GA) or by peripheral blood enrichment with BM-derived CD115(+) monocytes (Mo(BM)) substantially curbs amyloid β-protein (Aβ) neuropathology and preserves cognitive function in murine models of Alzheimer's disease (ADtg mice)...
August 28, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28854282/endothelial-derived-extracellular-matrix-ameliorate-the-stemness-deprivation-during-ex-vivo-expansion-of-mouse-bone-marrow-derived-mesenchymal-stem-cells
#19
Ming-Kang Lee, Shau-Ping Lin, Wei-Chun HuangFu, Dee-Shiuh Yang, I-Hsuan Liu
Mesenchymal stem cells (MSCs) hold great potential in cell therapies by virtue of the regenerative effects and immunomodulatory properties, but the scarce nature of MSCs makes ex vivo expansion indispensable prior to transplantation purposes. However, potential loss of stemness ensuing culture expansion has hindered the advancements in MSCs-based treatments. In principle, stemness could be preserved by reconstructing the stem cell niche. To test whether the endothelial cells (ECs) participate in the constitution of the stem cell niche for mesenchymal stem cells (MSCs), ECs derivatives including extracellular matrix (ECM) and conditioned medium (CM) prepared from aortic endothelial cells (AECs) and Mile Sven 1 endothelial cell line (MS1) were investigated for the potential to maintain MSCs stemness...
2017: PloS One
https://www.readbyqxmd.com/read/28851918/atp6ap2-ablation-in-adult-mice-impairs-viability-through-multiple-organ-deficiencies
#20
Olivia Wendling, Marie-France Champy, Solène Jaubert, Guillaume Pavlovic, Aline Dubos, Loic Lindner, Hugues Jacobs, Manuel Mark, Roy Combe, Isabelle Goncalves Da Cruz, Hervé Luche, John S Mudgett, Thomas Rosahl, Tania Sorg, Marie Malissen, Patrick T Reilly, Yann Hérault
ATP6AP2 codes for the (pro)renin receptor and is an essential component of vacuolar H+ ATPase. Activating (pro)renin for conversion of Angiotensinogen to Angiotensin makes ATP6AP2 attractive for drug intervention. Tissue-specific ATP6AP2 inactivation in mouse suggested a strong impact on various organs. Consistent with this, we found that embryonic ablation of Atp6ap2 resulted in both male hemizygous lethality and female haploinsufficiency. Next, we examined the phenotype of an induced inactivation in the adult animal, most akin to detect potential effect of functional interference of ATP6AP2 through drug therapy...
August 29, 2017: Scientific Reports
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