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Circulating Progenitor Cells

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https://www.readbyqxmd.com/read/28093678/changes-in-serum-vascular-endothelial-growth-factor-and-endostatin-concentrations-associated-with-circulating-endothelial-progenitor-cells-after-acute-ischemic-stroke
#1
Lixia Xue, Hao Chen, Ting Zhang, Jingjiong Chen, Zhi Geng, Yuwu Zhao
Angiogenesis is an important pathophysiological response to cerebral ischemia, and can be modulated by vascular endothelial growth factor (VEGF) and endostatin. Circulating endothelial progenitor cells (EPCs) also play an important role as an endogenous repair mechanism for ischemic injury. We sought to investigate early changes in the expression of VEGF and endostatin in serum and the circulating EPCs in patients with acute ischemic stroke (AIS) and analyzed the relations between them. The peripheral blood and serum samples were obtained from 30 patients at 1, 3, 5 and 7 d after AIS...
January 16, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28087538/bcap-inhibits-proliferation-and-differentiation-of-myeloid-progenitors-in-the-steady-state-and-during-demand-situations
#2
Jeffrey M Duggan, Matthew B Buechler, Rebecca M Olson, Tobias M Hohl, Jessica A Hamerman
B cell adaptor for PI3-kinase (BCAP) is a signaling adaptor expressed in mature hematopoietic cells including monocytes and neutrophils. Here we investigated the role of BCAP in the homeostasis and development of these myeloid lineages. BCAP(-/-) mice had more bone marrow (BM) monocytes than WT mice, and in mixed WT:BCAP(-/-) BM chimeras, monocytes and neutrophils skewed towards BCAP(-/-) origin, showing a competitive advantage for BCAP(-/-) myeloid cells. BCAP was expressed in bone marrow hematopoietic progenitors, including LSK (Lineage(-)Sca1(+)cKit(+)), CMP (Common Myeloid Progenitor) and GMP (Granulocyte/Macrophage Progenitor) cells...
January 13, 2017: Blood
https://www.readbyqxmd.com/read/28078527/circulating-endothelial-progenitor-cells-in-crohn-s-disease-an-epic-in-the-making
#3
EDITORIAL
Catharine Dietrich, Shree Ram Singh
No abstract text is available yet for this article.
January 11, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28060837/beneficial-effects-of-reconstituted-high-density-lipoprotein-rhdl-on-circulating-cd34-cells-in-patients-after-an-acute-coronary-syndrome
#4
Catherine Gebhard, Eric Rhéaume, Colin Berry, Geneviève Brand, Anne-Elen Kernaleguen, Gabriel Théberge-Julien, Mohammad Afaque Alam, Candace Y W Lee, Laurianne Boileau, Malorie Chabot-Blanchet, Marie-Claude Guertin, Marc-André Lavoie, Jean Grégoire, Réda Ibrahim, Philippe L'Allier, Jean-Claude Tardif
BACKGROUND: High-density lipoproteins (HDL) favorably affect endothelial progenitor cells (EPC). Circulating progenitor cell level and function are impaired in patients with acute coronary syndrome (ACS). This study investigates the short-term effects of reconstituted HDL (rHDL) on circulating progenitor cells in patients with ACS. METHODS AND FINDINGS: The study population consisted of 33 patients with recent ACS: 20 patients from the ERASE trial (randomized to receive 4 weekly intravenous infusions of CSL-111 40 mg/kg or placebo) and 13 additional patients recruited as controls using the same enrolment criteria...
2017: PloS One
https://www.readbyqxmd.com/read/28034873/an-incomplete-trafficking-defect-to-the-cell-surface-leads-to-paradoxical-thrombocytosis-for-human-and-murine-mpl-p106l
#5
Fabrizia Favale, Kahia Messaoudi, Leila N Varghese, Siham Boukour, Christian Pecquet, Vitalina Gryshkova, Jean Philippe Defour, Roxana-Irina Albu, Olivier Bluteau, Paola Ballerini, Guy Leverger, Isabelle Plo, Najet Debili, Hana Raslova, Remi Favier, Stefan N Constantinescu, William Vainchenker
The mechanisms behind the hereditary thrombocytosis induced by the thrombopoietin (THPO) receptor MPL P106L mutant remain unknown. A complete trafficking defect to the cell surface has been reported, suggesting either weak constitutive activity or nonconventional THPO-dependent mechanisms. Here, we report that the thrombocytosis phenotype induced by MPL P106L belongs to the paradoxical group, where low MPL levels on platelets and mature megakaryocytes (MKs) lead to high serum THPO levels, whereas weak but not absent MPL cell-surface localization in earlier MK progenitors allows response to THPO by signaling and amplification of the platelet lineage...
December 29, 2016: Blood
https://www.readbyqxmd.com/read/28033126/shear-stress-mediated-upregulation-of-gtp-cyclohydrolase-tetrahydrobiopterin-pathway-ameliorates-hypertension-related-decline-in-reendothelialization-capacity-of-endothelial-progenitor-cells
#6
Yong-Ping Bai, Songhua Xiao, Yong-Bo Tang, Zhi Tan, Hailin Tang, Zhi Ren, Haitao Zeng, Zhen Yang
OBJECTIVES: Guanosine triphosphate cyclohydrolase/tetrahydrobiopterin (GTPCH)/(BH4) pathway has been proved to regulate the function of endothelial progenitor cells (EPCs) in deoxycorticosterone acetate-salt hypertensive mice, indicating that GTPCH/BH4 pathway may be an important repair target for hypertension-related endothelial injury. Shear stress is an important nonpharmacologic strategy to modulate the function of EPCs. Here, we investigated the effects of laminar shear stress on the GTPCH/BH4 pathway and endothelial repair capacity of circulating EPCs in hypertension...
December 28, 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/28029641/angiogenic-imbalance-and-residual-myocardial-injury-in-recovered-peripartum-cardiomyopathy-patients
#7
Sorel Goland, Jean Marc Weinstein, Adi Zalik, Rafael Kuperstein, Liaz Zilberman, Sara Shimoni, Michael Arad, Tuvia Ben Gal, Jacob George
BACKGROUND: Recent studies suggest that angiogenic imbalance during pregnancy may lead to acute peripartum cardiomyopathy (PPCM). We propose that angiogenic imbalance and residual cardiac dysfunction may exist even after recovery from PPCM. METHODS AND RESULTS: Twenty-nine women at least 12 months after presentation with PPCM, who exhibited recovery of left ventricular (LV) ejection fraction (≥50%), were included in the study (mean age 35±6 years, LV ejection fraction 61...
November 2016: Circulation. Heart Failure
https://www.readbyqxmd.com/read/28026131/sphingosine-1-phosphate-receptor-3-supports-hematopoietic-stem-and-progenitor-cell-residence-within-the-bone-marrow-niche
#8
Molly E Ogle, Claire E Olingy, Anthony O Awojoodu, Anusuya Das, Rafael A Ortiz, Hoi Yin Cheung, Edward A Botchwey
Hematopoietic stem and progenitor cells (HSPCs) egress from bone marrow (BM) during homeostasis and at increased rates during stress; however, the mechanisms regulating their trafficking remain incompletely understood. Here we describe a novel role for lipid receptor, sphingosine-1-phosphate receptor 3 (S1PR3), in HSPC residence within the BM niche. HSPCs expressed increased levels of S1PR3 compared to differentiated BM cells. Pharmacological antagonism or knockout (KO) of S1PR3 mobilized HSPCs into blood circulation, suggesting that S1PR3 influences niche localization...
December 27, 2016: Stem Cells
https://www.readbyqxmd.com/read/28024915/how-do-megakaryocytic-microparticles-target-and-deliver-cargo-to-alter-the-fate-of-hematopoietic-stem-cells
#9
Jinlin Jiang, Chen-Yuan Kao, Eleftherios T Papoutsakis
Megakaryocytic microparticles (MkMPs), the most abundant MPs in circulation, can induce the differentiation of hematopoietic stem and progenitor cells (HSPCs) into functional megakaryocytes. This MkMP capability could be explored for applications in transfusion medicine but also for delivery of nucleic acids and other molecules to HSPCs for targeted molecular therapy. Understanding how MkMPs target, deliver cargo and alter the fate of HSPCs is important for exploring such applications. We show that MkMPs, which are distinct from Mk exosomes (MkExos), target HSPCs with high specificity since they have no effect on other ontologically or physiologically related cells, namely mesenchymal stem cells, endothelial cells or granulocytes...
December 24, 2016: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28008262/kinetics-of-circulating-endothelial-progenitor-cells-in-patients-undergoing-carotid-artery-surgery
#10
Günay Kalender, Angela Kornberger, Milan Lisy, Andres Beiras-Fernandez, Ulrich A Stock
AIM: Endothelial progenitor cells (EPCs) are primitive cells found in the bone marrow and peripheral blood (PB). In particular, the potential of EPCs to differentiate into mature endothelial cells remains of high interest for clinical applications such as bio-functionalized patches for autologous seeding after implantation. The objective of this study was to determine EPCs' kinetics in patients undergoing carotid artery thromboendarterectomy (CTEA) and patch angioplasty. METHODS: Twenty CTEA patients were included (15 male, mean age 76 years)...
2016: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28004026/flow-cytometric-data-analysis-of-circulating-progenitor-cell-stability
#11
Ernestine A Mahar, Liping Mou, Salim S Hayek, Arshed A Quyyumi, Edmund K Waller
A recent publication by Mekonnen et al. demonstrated that among women with non-obstructive coronary artery disease, higher levels of circulating progenitor cells in the blood (CPC), were associated with impaired coronary flow reserve [1]. We performed a quality control assessment of the stability of circulating blood progenitor cells in blood samples stored at 4 °C, to determine the time period during which blood samples can be analyzed and yield consistent data for progenitor cell content. Healthy volunteers (n=6) were recruited and underwent phlebotomy, and blood was stored in EDTA tubes at 4 °C...
February 2017: Data in Brief
https://www.readbyqxmd.com/read/28003010/endothelial-progenitor-cells-as-a-therapeutic-approach-for-intracerebral-hemorrhage
#12
Juan Pías-Peleteiro, Francisco Campos, María Pérez-Mato, Esteban López-Arias, Manuel Rodríguez-Yáñez, José Castillo, Tomás Sobrino
BACKGROUND: Intracerebral hemorrhage (ICH) is the most lethal subtype of stroke, a leading cause of death and disability in developed countries. Therapeutic options are notably limited. There is no specific pharmacological treatment, and early surgery has few indications that represent only a small clinically relevant survival advantage. It is therefore mandatory to investigate repairing processes after ICH in order to develop related therapeutic strategies. METHODS: The goal of this review is to discuss the current status of knowledge about the potential therapeutic role of endothelial progenitor cells (EPCs) in ICH, as well as the possible molecular mechanisms and future perspectives...
December 21, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28003003/endothelial-progenitor-cells-as-a-therapeutic-approach-for-intracerebral-hemorrhage
#13
Juan Pías-Peleteiro, Francisco Campos, María Pérez-Mato, Esteban López-Arias, Manuel Rodríguez-Yáñez, José Castillo, Tomás Sobrino
BACKGROUND: Intracerebral hemorrhage (ICH) is the most lethal subtype of stroke, a leading cause of death and disability in developed countries. Therapeutic options are notably limited. There is no specific pharmacological treatment, and early surgery has few indications that represent only a small clinically relevant survival advantage. It is therefore mandatory to investigate repairing processes after ICH in order to develop related therapeutic strategies. METHODS: The goal of this review is to discuss the current status of knowledge about the potential therapeutic role of endothelial progenitor cells (EPCs) in ICH, as well as the possible molecular mechanisms and future perspectives...
December 21, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27999737/immunotherapies-targeting-cd38-in-multiple-myeloma
#14
REVIEW
Djordje Atanackovic, Mary Steinbach, Sabarinath Venniyil Radhakrishnan, Tim Luetkens
Recently, the monoclonal antibody daratumumab was approved as a single agent for the treatment of patients with relapsed/refractory Multiple Myeloma (MM). Daratumumab is an antibody targeting surface molecule CD38 on myeloma cells and the agent is already widely being used based on its good tolerability and proven efficacy. We believe, however, that the efficacy of this drug and other anti-CD38 monoclonal antibodies can be further improved by combining it with other types of immunotherapies. Furthermore, surface molecule CD38 can be used as a target for immunotherapies other than just naked monoclonal antibodies...
2016: Oncoimmunology
https://www.readbyqxmd.com/read/27994950/cytokine-signaling-regulating-adipose-stromal-cell-trafficking
#15
Yan Zhang, Mikhail G Kolonin
Adipocyte progenitors, known as adipose stromal cells (ASC), can become mobilized, recruited by tumors, and contribute to cancer progression. Mechanisms underlying ASC trafficking have remained obscure. We recently reported that CXCL1 expressed by cancer cells chemoattracts ASC expressing CXCR1 in obesity. As a candidate mechanism of CXCL1 activation, we identified interleukin (IL)-22, systemic circulation of which is increased in obesity. It has been reported that IL-22 signaling through IL-22R is upstream of CXCL1...
October 2016: Adipocyte
https://www.readbyqxmd.com/read/27993221/exendin-4-a-glucagon-like-peptide-1-analogue-accelerates-diabetic-wound-healing
#16
Jun-Neng Roan, Han-Ni Cheng, Chao-Chung Young, Chi-Ju Lee, Ming-Long Yeh, Chwan-Yau Luo, Yau-Sheng Tsai, Chen-Fuh Lam
BACKGROUND: Diabetes disregulates inflammatory responses and impairs vascular function in wounds. Glucagon-like peptide-1 receptor (Glp-1R) agonists are hypoglycemic agents with pleiotropic vascular protective and anti-inflammatory effects. The therapeutic potential of a Glp-1 analogue in a diabetic rat model of excisional wound injury was investigated. MATERIALS AND METHODS: Excisional wounds were created on the dorsum of streptozotocin-induced diabetic rats, which received placebo or Glp-1 analogue exendin-4 (Ex4; 0...
February 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/27982316/mobilization-of-hematopoietic-progenitor-cells-for-autologous-transportation-consensus-recommendations
#17
Fernando Barroso Duarte, Benedito de Pina Almeida Prado, Garles Miller Matias Vieira, Luciano J Costa
Selected patients with certain hematological malignancies and solid tumors have the potential to achieve long-term survival with autologous hematopoietic progenitor cell transplant. The collection of these cells in peripheral blood avoids multiple bone marrow aspirations, results in faster engraftment and allows treatment of patients with infection, fibrosis, or bone marrow hypocellularity. However, for the procedure to be successful, it is essential to mobilize a sufficient number of progenitor cells from the bone marrow into the blood circulation...
October 2016: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/27976803/cd31-cells-from-peripheral-blood-facilitate-bone-regeneration-in-biologically-impaired-conditions-through-synergistic-combined-effects-on-immunomodulation-and-angiogenesis
#18
F Andrea Sass, Katharina Schmidt-Bleek, Agnes Ellinghaus, Sebastian Filter, Alexander Rose, Bernd Preininger, Simon Reinke, Sven Geissler, Hans-Dieter Volk, Georg N Duda, Anke Dienelt
Controlled revascularization and inflammation are key elements regulating endogenous regeneration after (bone) tissue trauma. Peripheral blood-derived cell subsets, such as regulatory T-helper cells and circulating (endothelial) progenitor cells, respectively, can support endogenous tissue healing, whereas effector T-cells that are associated with an aged immune system can hinder bone regeneration. CD31 is expressed by diverse leukocytes and is well recognized as a marker of circulating endothelial (precursor) cells; however, CD31 is absent from the surface of differentiated effector T-cells...
December 15, 2016: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/27970271/tct-108-comparison-of-ticagrelor-versus-prasugrel-on-inflammation-vascular-function-and-circulating-endothelial-progenitor-cells-in-diabetic-patients-with-non-st-elevation-acute-coronary-syndrome-nste-acs-requiring-coronary-stenting-prospective-randomized-cross
#19
Eulogio García, Soonjun Hong, Sang-A Cho, Jae Young Cho, Seung Hun Lee, Hyung Joon Joo, Jae Hyoung Park, Cheol Woong Yu, Do Sun Lim
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27968848/effect-of-danhong-injection-on-the-mobilisation-of-endothelial-progenitor-cells-to-vascular-repair-after-percutaneous-coronary-intervention-a-randomised-controlled-trial
#20
Zhen Hu, Hong Wang, Guanwei Fan, Han Zhang, Xiaoying Wang, Jingyuan Mao, Yingqiang Zhao, Yi An, Yuhong Huang, Chuan Li, Lianying Chang, Xianming Chu, Li Li, Yanfen Li, Yuan Zhang, Gangjian Qin, Xiumei Gao, Boli Zhang
BACKGROUND: Endothelial progenitor cells (EPCs) derived from bone marrow are associated with the repair of vascular injury by accelerating re-endothelisation, and represent a potential therapeutic target for ischaemic disease. Danhong injection (DHI), a Chinese Materia Medica standardised product extracted from Radix Salvia miltiorrhiza and Flos Carthamus tinctorius L, is effective in the treatment of ischaemic heart disease. We assessed the effect of DHI on the mobilisation of EPCs and vascular repair mediated by EPCs after percutaneous coronary intervention (PCI)...
October 2016: Lancet
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