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https://www.readbyqxmd.com/read/29774987/an-increased-percentage-of-myeloid-cd34-bone-marrow-cells-stratifies-intermediate-ipss-r-myelodysplastic-syndrome-patients-into-prognostically-significant-groups
#1
T-H Chen-Liang, A M Casado-Prieto, V Campos-Rodríguez, A M Hurtado, M L Amigo, M D García-Malo, V Vicente, F J Ortuño, A Jerez
INTRODUCTION: The Revised International Prognostic Scoring System (IPSS-R) for myelodysplastic syndromes (MDS) has established an intermediate category where a disease-modifying intervention is a matter of debate. Flow cytometry allows us to determine a fraction of immature myeloid cells in a semiautomated procedure. The aim of this study, mirroring IPSS-R study inclusion criteria, was to test whether bone marrow (BM) CD34+My percentage has independent prognostic value in the MDS setting...
May 18, 2018: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/29772249/evaluation-of-the-effect-of-storage-condition-on-cell-extraction-and-flow-cytometric-analysis-from-intestinal-biopsies
#2
Manon E Wildenberg, Marjolijn Duijvestein, Liset Westera, Tanja van Viegen, Christianne J Buskens, Jarmila D W van der Bilt, Larry Stitt, Vipul Jairath, Brian G Feagan, Niels Vande Casteele
BACKGROUND: Flow cytometric (FC) analysis of intestinal tissue biopsies requires prompt cell isolation and processing to prevent cell death and generate valid data. We examined the effect of storage conditions prior to cell isolation and FC on viable cell yield and the proportions of immune cell phenotypes from intestinal biopsies. METHODS: Biopsies (N = 224) from inflamed or non-inflamed ileal and/or colonic tissue from three patients with Crohn's disease were processed and analyzed immediately in duplicate, or stored under different conditions...
May 14, 2018: Journal of Immunological Methods
https://www.readbyqxmd.com/read/29771429/the-relationship-between-number-and-function-of-epcs-and-concentration-of-vegf165-and-sdf-1-in-coronary-artery-spasm
#3
Z-Q Sheng, Y-F Li, K-L Zheng, H-H Lu, J Xie, H Wu, B Xu
OBJECTIVE: We aimed at investigating the functions of endothelial progenitor cells (EPCs) in the pathophysiology of coronary artery spasm (CAS) and coronary artery disease (CAD), as well as to evaluate the correlation of these diseases with the number and function of EPCs, the plasma concentration of vascular endothelial growth factor 165 (VEGF165) and stromal cell-derived factor 1 (SDF-1). PATIENTS AND METHODS: Participants were recruited into three groups, CAS, CAD and the control...
May 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29771426/the-relationship-between-the-levels-and-function-of-endothelial-progenitor-cells-and-factor-v-leiden-and-protein-c-deficiency-in-patients-with-primary-budd-chiari-syndrome
#4
Z-Y Guan, C-W Yu, T Song, Y Gao
OBJECTIVE: Budd-Chiari syndrome (BCS) is a life-threatening hepatic disease characterized by hepatic venous obstruction at the level of hepatic vein, hepatic venules, or inferior vena cava. No evidence reported the relationship between the endothelial progenitor cells and the deficiency of factor V Leiden and protein C in patients with primary Budd-Chiari syndrome. PATIENTS AND METHODS: We recruited participants between June 2014 and July 2015. For primary BCS group, 28 patients were collected...
May 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29769438/cytometry-tof-identifies-alveolar-macrophage-subtypes-in-acute-respiratory-distress-syndrome
#5
Eric D Morrell, Alice Wiedeman, S Alice Long, Sina A Gharib, T Eoin West, Shawn J Skerrett, Mark M Wurfel, Carmen Mikacenic
Studies in human peripheral blood monocyte-derived macrophages in vitro have shown clear evidence that multiple macrophage polarization states exist. The extent to which different alveolar macrophage (AM) polarization states exist in homeostasis or in the setting of severe injury such as acute respiratory distress syndrome (ARDS) is largely unknown. We applied single-cell cytometry TOF (CyTOF) to simultaneously measure 36 cell-surface markers on CD45+ cells present in bronchoalveolar lavage from healthy volunteers, as well as mechanically ventilated subjects with and without ARDS...
May 17, 2018: JCI Insight
https://www.readbyqxmd.com/read/29769234/a-multicolour-flow-cytometric-assay-for-c-myc-protein-in-b-cell-lymphoma
#6
Khaled Alayed, Karen Schweitzer, Amad Awadallah, Shashirekha Shetty, Samir Turakhia, Howard Meyerson
AIM: Develop an objective assay to detect c-MYC protein expression using multiparametric flow cytometry (FCM) as an alternative to immunohistochemistry (IHC). METHODS: 57 patient samples and 11 cell line samples were evaluated. Cell suspensions were obtained and c-MYC staining was performed in combination with CD45 and CD19 and, in some samples, CD10. The percentage of c-MYC+ cells by FCM was correlated with the percentage determined by IHC. The relationship between c-MYC protein expression and the presence of a c-MYC gene rearrangement in aggressive and high-grade lymphomas was also assessed...
May 16, 2018: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/29768967/interleukin-1-receptor-1-deletion-in-focal-and-diffuse-experimental-traumatic-brain-injury-in-mice
#7
Joon Yong Chung, Nicolas Krapp, Limin Wu, Sevda Lule, Lauren McAllister, William Edmiston Iii, Samantha Martin, Emily Levy, Tanya Songtachalert, John Sherwood, Erin Buckley, Bharat Sanders, Saef Izzy, Suzanne Hickman, Shuzhen Guo, Josephine Lok, Joseph El Khoury, Eng Lo, David Kaplan, Michael Whalen
Important differences in the biology of focal and diffuse traumatic brain injury (TBI) subtypes may result in unique pathophysiological responses to shared molecular mechanisms. Interleukin-1 (IL-1) signaling has been tested as a potential therapeutic target in preclinical models of cerebral contusion and diffuse TBI, and in a phase II clinical trial, but no published studies have examined IL-1 signaling in an impact/acceleration closed head injury (CHI) model. We hypothesized that genetic deletion of IL-1 receptor-1 (IL-1R1 KO) would be beneficial in focal (contusion) and CHI in mice...
May 17, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29768259/precise-intradermal-injection-of-nanofat-derived-stromal-cells-combined-with-platelet-rich-fibrin-improves-the-efficacy-of-facial-skin-rejuvenation
#8
Zhi-Jie Liang, Xiang Lu, De-Quan Li, Yi-Dan Liang, Dan-Dan Zhu, Fang-Xiao Wu, Xiao-Lin Yi, Ning He, Yan-Qing Huang, Chao Tang, Hong-Mian Li
BACKGROUND/AIMS: The rejuvenation properties of nanofat grafting have been described in recent years. However, it is not clear whether the clinical efficacy of the procedure is attributable to stem cells or linked to other components of adipose tissue. In this study we isolated nanofat-derived stem cells (NFSCs) to observe their biological characteristics and evaluate the efficacy of precise intradermal injection of nanofat combined with platelet-rich fibrin (PRF) in patients undergoing facial rejuvenation treatment...
May 11, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29767614/differential-attenuation-of-marek-s-disease-virus-induced-tumours-and-late-marek-s-disease-virus-induced-immunosuppression
#9
Nik M Faiz, Aneg L Cortes, James S Guy, Sanjay M Reddy, Isabel M Gimeno
Marek's disease virus (MDV) is a herpesvirus that induces lymphoma and a variety of non-neoplastic syndromes in chickens. Furthermore, very virulent plus (vv+) MDVs induce a form of immunosuppression (late-MDV-IS) that might involve both neoplastic and non-neoplastic mechanisms. The objective of this study was to evaluate whether the attenuation of MDV-induced tumours and late-MDV-IS occurs simultaneously or can be dissociated. The immunosuppressive ability of three viruses derived from vv+ MDV strain 686 (wild-type 686, the somewhat attenuated molecular clone 686-BAC, and the nononcogenic molecular clone lacking the two copies of the oncogene meq 686-BACΔMEQ) was evaluated...
May 16, 2018: Journal of General Virology
https://www.readbyqxmd.com/read/29765418/isolation-and-characterisation-of-mesenchymal-stem-cells-from-rat-bone-marrow-and-the-endosteal-niche-a-comparative-study
#10
Norhayati Yusop, Paul Battersby, Amr Alraies, Alastair J Sloan, Ryan Moseley, Rachel J Waddington
Within bone, mesenchymal stromal cells (MSCs) exist within the bone marrow stroma (BM-MSC) and the endosteal niche, as cells lining compact bone (CB-MSCs). This study isolated and characterised heterogeneous MSC populations from each niche and subsequently investigated the effects of extensive cell expansion, analysing population doublings (PDs)/cellular senescence, colony-forming efficiencies (CFEs), MSC cell marker expression, and osteogenic/adipogenic differentiation. CB-MSCs and BM-MSCs demonstrated similar morphologies and PDs, reaching 100 PDs...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29764475/a-potential-gliovascular-mechanism-for-microglial-activation-differential-phenotypic-switching-of-microglia-by-endothelium-versus-astrocytes
#11
Changhong Xing, Wenlu Li, Wenjun Deng, MingMing Ning, Eng H Lo
BACKGROUND: Activation of microglia can result in phenotypic and functional diversity. However, the pathways that trigger different states of microglial activation remain to be fully understood. Here, we hypothesized that after injury, astrocytes and endothelium may contribute to a gliovascular switch for microglial activation. METHODS: Astrocytes or cerebral endothelial cells were subjected to oxygen glucose deprivation, then conditioned media were transferred to microglia...
May 15, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29764019/-the-role-of-type-2-innate-lymphoid-cells-in-the-pathogenesis-of-eosinophilic-chronic-rhinosinusitis-with-nasal-polyps
#12
C L Geng, Z M Xing, L S Yu, M Wang, X P Yuan, Y Liu, G Zhang, Z J Wang
Objective: To investigate the type 2 innate lymphoid cells (ILC2s) in eosinophilic nasal polyps, non-eosinophilic nasal polyps and controls, and to compare the characteristics of ILC2s indifferent types of nasal polyp. Methods: Flow cytometric analysis was used to quantify the ILC2s and Th2 cells in tissues from 19 patients with chronic rhinosinusitis with nasal polyp (CRSwNP) and 6 controls. The patients were classified into two groups as eosinophilic chronic rhinosinusitis with nasal polyps (ECRSwNP) and non-eosinophilic chronic rhinosinusitis with nasal polyps (non-ECRSwNP) based on eosinophil counts under hematoxylin-eosin staining...
May 7, 2018: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/29763582/the-pathogenic-role-of-dendritic-cells-in-non-infectious-anterior-uveitis
#13
M O'Rourke, U Fearon, C M Sweeney, S A Basdeo, J M Fletcher, C C Murphy, M Canavan
BACKGROUND: Anterior uveitis (AU) is characterised by infiltration of immune cells into the anterior chamber of the eye. Dendritic cells (DC) are professional antigen presenting cells that initiate and promote inflammation. This study aims to characterise DC in AU and to examine the effects of aqueous humor (AqH) on DC maturation and function. METHODS: The frequency and phenotype of AU and healthy control (HC) circulating DC was examined. AU and HC AqH was immunostained and assessed by flow cytometry...
May 12, 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29760742/correlation-between-therapeutic-efficacy-of-cd34-cell-treatment-and-directed-in-vivo-angiogenesis-in-patients-with-end-stage-diffuse-coronary-artery-disease
#14
Tien-Hung Huang, Cheuk-Kwan Sun, Yi-Ling Chen, Pei-Hsun Sung, Chi-Hsiang Chu, Mel S Lee, Yuan-Ping Lin, Hon-Kan Yip, Fan-Yen Lee
Background: This study was aimed at testing the association between the therapeutic efficacy of CD34+ cell treatment in patients with end-stage diffuse coronary artery disease as reflected in angiographic grading and results of directed in vivo angiogenesis assay (DIVAA) on their isolated peripheral blood mononuclear cell- (PBMC-) derived endothelial progenitor cells (EPCs). Methods: Angiographic grades (0: <5%; 1: 5-35%; 2: 35-75%; 3: >75%) which presented the improvement of vessel density pre- and post-CD34+ treatment were given to 30 patients with end-stage diffuse coronary artery disease having received CD34+ cell treatment...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29760732/comparative-study-on-in-vitro-culture-of-mouse-bone-marrow-mesenchymal-stem-cells
#15
Yuxin Hu, Bin Lou, Xiafang Wu, Ruirui Wu, Huihui Wang, Lanyue Gao, Jingbo Pi, Yuanyuan Xu
In vitro culture of mesenchymal stem cells (MSCs) from mouse bone marrow (BM) has been hampered because of the low yield of MSCs during isolation and the contamination of hematopoietic cells during expansion. The lack of specific mouse BM-MSC markers increases the difficulty. Several techniques have been reported to improve the purity and in vitro growth of mouse BM-MSCs. However, systematic report on comparison of characteristics in primary BM-MSCs between different culture conditions is rare. Here, we studied the effects of oxygen concentrations and initial medium replacement intervals, along with cell passages, on mouse BM-MSCs isolated with differential adhesion method...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29759032/tim-3-expressing-mast-cells-are-present-in-chronic-rhinosinusitis-with-nasal-polyps
#16
Erica Corredera, Binh L Phong, John A Moore, Lawrence P Kane, Stella E Lee
Objectives To identify whether TIM-3 expression is present in the mast cell population within nasal polyps and to determine its correlation with clinical severity in patients with chronic rhinosinusitis with nasal polyposis. Study Design Basic science, translational study. Setting Nasal polyp tissue collected from patients seen at a tertiary care hospital (2015-2016). Subjects and Methods Nasal polyp tissue obtained during functional endoscopic sinus surgery (n = 24) was enzymatically digested into epithelial and stromal fractions...
May 1, 2018: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29756323/primary-mediastinal-histiocytic-sarcoma-presenting-as-pleural-effusion
#17
Jie-Yang Jhuang, Wei-Yu Chen, Shih-Sung Chuang
Histiocytic sarcoma (HS) is a rare malignant neoplasm showing morphological and immunophenotypic features of mature tissue histiocytes. As HS may mimic non-Hodgkin lymphoma (NHL) pathologically, before the era of immunohistochemistry, many previously reported cases were misdiagnosed NHL. Up to date, there are only a few reports delineating the cytological features in fine-needle aspiration or bronchoalveolar lavage, but not in the effusion fluid yet. Herein, we report the case of a 61-year-old male with a mediastinal tumor presenting with malignant pleural effusion...
May 13, 2018: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/29755398/deconvolution-of-human-brain-cell-type-transcriptomes-unraveled-microglia-specific-potential-biomarkers
#18
R Ayana, Shailja Singh, Soumya Pati
Microglial cells form a context-dependent network of brain immunoeffector cells. Despite their indispensable roles, unresolved questions exist around biomarker discovery relevant to their cellular localization, self-renewing potential, and brain developmental dynamics. To resolve the existent gap in the annotation of candidate biomarkers, we conducted a meta-analysis of brain cells using available high-throughput data sets for deciphering microglia-specific expression profiles. We have identified 3,290 significant genes specific to microglia and further selected the top 20 dysregulated genes on the basis of p -value and log2 FC...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29755322/microglial-activation-after-systemic-stimulation-with-lipopolysaccharide-and-escherichia-coli
#19
Inge C M Hoogland, Dunja Westhoff, Joo-Yeon Engelen-Lee, Jeroen Melief, Mercedes Valls Serón, Judith H M P Houben-Weerts, Inge Huitinga, David J van Westerloo, Tom van der Poll, Willem A van Gool, Diederik van de Beek
Background: Microglial activation after systemic infection has been suggested to mediate sepsis-associated delirium. A systematic review of animal studies suggested distinct differences between microglial activation after systemic challenge with live bacteria and lipopolysaccharide (LPS). Here, we describe a mouse model of microglial activation after systemic challenge with live Escherichia coli ( E. coli ) and compare results with systemic challenge with LPS. Methods: Sixty mice were intraperitoneally injected with E...
2018: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29752300/intramyocardial-angiogenetic-stem-cells-and-epicardial-erythropoietin-save-the-acute-ischemic-heart
#20
Christian Klopsch, Anna Skorska, Marion Ludwig, Heiko Lemcke, Gabriela Maass, Ralf Gaebel, Martin Beyer, Cornelia Lux, Anita Toelk, Karina Müller, Christian Maschmeier, Sarah Rohde, Petra Mela, Brigitte Müller-Hilke, Stefan Jockenhoevel, Brigitte Vollmar, Robert Jaster, Robert David, Gustav Steinhoff
Ischemic heart failure still displays the highest mortality. An early boost of intracardiac regenerative key mechanisms and angiogenetic niche signaling in cardiac mesenchymal stem cells (MSCs) could improve myocardial infarction (MI) healing. Epicardial erythropoietin (EPO, 300U kg-1 ) was compared with intraperitoneal and intramyocardial EPO treatments after acute MI in rats (n=156). Real-time PCR and confocal microscopy revealed epicardial EPO treatment enhanced intracardiac regenerative key indicators (SDF-1, CXCR-4, CD34, Bcl-2, Cyclin D1, Cdc2, MMP2), induced TGF-β/WNT signaling in intramyocardial MSC niches through direct activation of AKT, upregulations of upstream signals FOS and Fzd7 and augmented intracardiac mesenchymal proliferation 24 hours after MI...
May 10, 2018: Disease Models & Mechanisms
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