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Haematopoietic stem cell

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https://www.readbyqxmd.com/read/28238414/histological-features-of-bone-marrow-in-paediatric-patients-during-the-asymptomatic-phase-of-early-stage-black-african-sickle-cell-anaemia
#1
Alessandro Mauriello, Erica Giacobbi, Andrea Saggini, Antonella Isgrò, Simone Facchetti, Lucia Anemona
Bone marrow histological features of sickle cell anaemia (SCA) patients during early stages and in the asymptomatic phase of the disease appear an interesting area of study, representing early-stage consequences of SCA with a close relation to its pathophysiology. Unfortunately, this field of research has never been specifically addressed before. Bone marrow biopsies from 26 consecutive Black African SCA patients (M:F=1.6:1; age 2-17 years), free of clinical signs of chronic bone marrow damage, with no recent history of symptomatic vaso-occlusive episodes, and waiting for haematopoietic stem cell transplantation (HSCT), underwent morphological, immunohistochemical and electron microscopy evaluation...
February 23, 2017: Pathology
https://www.readbyqxmd.com/read/28231331/mesenchymal-stromal-cells-mscs-induce-ex-vivo-proliferation-and-erythroid-commitment-of-cord-blood-haematopoietic-stem-cells-cb-cd34-cells
#2
Simone Perucca, Andrea Di Palma, Pier Paolo Piccaluga, Claudia Gemelli, Elisa Zoratti, Giulio Bassi, Edoardo Giacopuzzi, Andrea Lojacono, Giuseppe Borsani, Enrico Tagliafico, Maria Teresa Scupoli, Simona Bernardi, Camilla Zanaglio, Federica Cattina, Valeria Cancelli, Michele Malagola, Mauro Krampera, Mirella Marini, Camillo Almici, Sergio Ferrari, Domenico Russo
A human bone marrow-derived mesenchymal stromal cell (MSCs) and cord blood-derived CD34+ stem cell co-culture system was set up in order to evaluate the proliferative and differentiative effects induced by MSCs on CD34+ stem cells, and the reciprocal influences on gene expression profiles. After 10 days of co-culture, non-adherent (SN-fraction) and adherent (AD-fraction) CD34+ stem cells were collected and analysed separately. In the presence of MSCs, a significant increase in CD34+ cell number was observed (fold increase = 14...
2017: PloS One
https://www.readbyqxmd.com/read/28228650/haematopoietic-stem-cell-transplantation-for-autoimmune-diseases
#3
REVIEW
Joost F Swart, Eveline M Delemarre, Femke van Wijk, Jaap-Jan Boelens, Jürgen Kuball, Jacob M van Laar, Nico M Wulffraat
Autologous haematopoietic stem cell transplantation (HSCT) is the only treatment that is able to induce long-term, drug-free and symptom-free remission in several refractory autoimmune rheumatic diseases. Over 3,000 HSCT procedures for rheumatic and nonrheumatic severe autoimmune diseases have been performed worldwide. Specific conditioning regimens are currently used to eradicate the autoreactive immunological memory of patients. Although in vivo immune cell depletion with antithymocyte globulin or anti-CD52 is the norm for many regimens, ex vivo selection of CD34(+) stem cells from the graft is controversial...
February 23, 2017: Nature Reviews. Rheumatology
https://www.readbyqxmd.com/read/28224997/clonal-reversal-of-ageing-associated-stem-cell-lineage-bias-via-a-pluripotent-intermediate
#4
Martin Wahlestedt, Eva Erlandsson, Trine Kristiansen, Rong Lu, Cord Brakebusch, Irving L Weissman, Joan Yuan, Javier Martin-Gonzalez, David Bryder
Ageing associates with significant alterations in somatic/adult stem cells and therapies to counteract these might have profound benefits for health. In the blood, haematopoietic stem cell (HSC) ageing is linked to several functional shortcomings. However, besides the recent realization that individual HSCs might be preset differentially already from young age, HSCs might also age asynchronously. Evaluating the prospects for HSC rejuvenation therefore ultimately requires approaching those HSCs that are functionally affected by age...
February 22, 2017: Nature Communications
https://www.readbyqxmd.com/read/28220548/relationship-of-physical-activity-with-physical-function-and-health-related-quality-of-life-in-patients-having-undergone-allogeneic-haematopoietic-stem-cell-transplantation
#5
S Morishita, K Kaida, S Yamauchi, T Wakasugi, K Ikegame, H Ogawa, K Domen
In this study, we investigated the differences in physical activity before and after transplantation, and the relationship between physical activity and physical function and health-related quality of life (QOL) in 30 patients who underwent allogeneic haematopoietic stem cell transplantation (allo-HSCT). Duration and intensity of physical activity were quantified using a three-dimensional accelerometer. Physical function was quantified by handgrip and knee-extensor strength, with the 6-minute walk test (6MWT) used as a measure of exercise capacity...
February 21, 2017: European Journal of Cancer Care
https://www.readbyqxmd.com/read/28218906/differential-cytokine-contributions-of-perivascular-haematopoietic-stem-cell-niches
#6
Noboru Asada, Yuya Kunisaki, Halley Pierce, Zichen Wang, Nicolas F Fernandez, Alexander Birbrair, Avi Ma'ayan, Paul S Frenette
Arterioles and sinusoids of the bone marrow (BM) are accompanied by stromal cells that express nerve/glial antigen 2 (NG2) and leptin receptor (LepR), and constitute specialized niches that regulate quiescence and proliferation of haematopoietic stem cells (HSCs). However, how niche cells differentially regulate HSC functions remains unknown. Here, we show that the effects of cytokines regulating HSC functions are dependent on the producing cell sources. Deletion of chemokine C-X-C motif ligand 12 (Cxcl12) or stem cell factor (Scf) from all perivascular cells marked by nestin-GFP dramatically depleted BM HSCs...
February 20, 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28215056/an-analysis-of-blood-utilization-for-stem-cell-transplant-patients-in-a-tertiary-care-hospital
#7
Natasha Ali
Background and Objective: Haematopoietic stem cell transplant is a potentially curative treatment option in various benign and malignant haematological diseases. Patients undergoing stem cell transplant procedure require blood transfusion on a daily basis. Currently, there is paucity of data from developing countries on transfusion practices. This audit was undertaken to determine the consumption of packed red blood cells (PRBCs) transfusion in the bone marrow transplant unit of the Aga Khan University Hospital...
February 28, 2017: International Journal of Stem Cells
https://www.readbyqxmd.com/read/28214876/the-snail-family-in-normal-and-malignant-haematopoiesis
#8
Catherine L Carmichael, Jody J Haigh
Snail family proteins are key inducers of the epithelial-mesenchymal transition (EMT), a critical process required for normal embryonic development. They have also been strongly implicated in regulating the EMT-like processes required for tumour cell invasion, migration, and metastasis. Whether these proteins also contribute to normal blood cell development, however, remains to be clearly defined. Increasing evidence supports a role for the Snail family in regulating cell survival, migration, and differentiation within the haematopoietic system, as well as potentially an oncogenic role in the malignant transformation of haematopoietic stem cells...
2017: Cells, Tissues, Organs
https://www.readbyqxmd.com/read/28214007/-impact-of-her2%C3%A2-and-brca1-2%C3%A2-status-in-high-dose-chemotherapy-and-autologous-stem-cells-transplantation-in-the-treatment-of-breast-cancer-the-institut-paoli-calmettes-experience
#9
Laurys Boudin, Christian Chabannon, Patrick Sfumato, Renaud Sabatier, François Bertucci, Carole Tarpin, Magali Provansal, Gilles Houvenaeghel, Eric Lambaudie, Agnes Tallet, Michel Resbeut, Emmanuelle Charafe-Jauffret, Boris Calmels, Claude Lemarie, Jean-Marie Boher, Jean-Marc Extra, Patrice Viens, Anthony Gonçalves
INTRODUCTION: Studies evaluating chemotherapy high dose chemotherapy with autologous haematopoietic stem cell transplantation (HDC-ACSH) in the treatment of metastatic (MBC), locally advanced (LABC) and inflammatory (IBC) breast cancer have in common lack of biomarker information, in particular the HER2 status. PATIENTS AND METHODS: All consecutive female patients treated for breast cancer with HDC and AHSCT at Institut Paoli Calmettes between 2003 and 2012 were included...
February 14, 2017: Bulletin du Cancer
https://www.readbyqxmd.com/read/28211574/conditioning-regimens-for-autologous-haematopoietic-stem-cell-transplantation-can-natural-killer-cell-therapy-help
#10
EDITORIAL
John A Snowden, Geoffrey R Hill
No abstract text is available yet for this article.
February 17, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28211211/circulating-fibrocyte-mobilization-in-negative-pressure-wound-therapy
#11
Dezhi Chen, Yong Zhao, Zonghuan Li, Kangquan Shou, Xun Zheng, Pengcheng Li, Baiwen Qi, Aixi Yu
Non-healing diabetic wounds are difficult to treat. They also create heavy financial burdens for both patients and society. Negative pressure wound therapy (NPWT) has been adopted to treat intractable wounds and has proved to be effective. However, the mechanisms that underlie the effects of this treatment are not entirely understood. Circulating fibrocytes are unique haematopoietic-derived stem cells that have been reported to play a pivotal role in wound healing. Here, we have investigated the effect of NPWT on fibrocyte mobilization and the role of fibrocyte mobilization in the healing of diabetic wounds during NPWT...
February 17, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28180000/haematopoietic-stem-cells-past-present-and-future
#12
REVIEW
Ashley P Ng, Warren S Alexander
The discovery and characterisation of haematopoietic stem cells has required decades of research. The identification of adult bone marrow as a source of haematopoietic cells capable of protecting an organism from otherwise lethal irradiation led to the intense search for their identity and characteristics. Using functional assays along with evolving techniques for isolation of haematopoietic cells, haematopoietic stem cell populations were able to be enriched and their characteristics analysed. The key haematopoietic stem cell characteristics of pluripotentiality and the ability for self-renewal have emerged as characteristics of several haematopoietic stem cell populations, including those that have recently challenged the conventional concepts of the haematopoietic hierarchy...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28173846/phenotype-and-multipotency-of-rabbit-oryctolagus-cuniculus-amniotic-stem-cells
#13
Jéssica Borghesi, Lara Carolina Mario, Ana Claudia Oliveira Carreira, Maria Angélica Miglino, Phelipe Oliveira Favaron
BACKGROUND: Stem cells are capable of unlimited self-renewal and are able to remain undifferentiated for extended periods of time prior to their differentiation into specific cell lineages. Because of the issues (ethical and religious) involved in the use of embryonic stem cells and the limited plasticity of adult stem cells, an alternative cell source could be foetal stem cells derived from extra-embryonic tissue, which are highly proliferative, grow in vitro and possess interesting immunogenic characteristics...
February 7, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28169418/allogeneic-transplantation-using-cd34-selected-peripheral-blood-progenitor-cells-combined-with-non-mobilized-donor-t%C3%A2-cells-for-refractory-severe-aplastic-anaemia
#14
Enkhtsetseg Purev, Xin Tian, Georg Aue, Jeremy Pantin, Phuong Vo, Reem Shalabi, Robert N Reger, Lisa Cook, Catalina Ramos, Elena Cho, Tat'yana Worthy, Hanh Khuu, David Stroncek, Neal S Young, Richard W Childs
Allogeneic haematopoietic stem cell transplantation is curative for severe aplastic anaemia (SAA) unresponsive to immunosuppressive therapy. To reduce chronic graft-versus-host disease (GVHD), which occurs more frequently after peripheral blood stem cell (PBSC) transplantation compared to bone-marrow transplantation (BMT), and to prevent graft rejection, we developed a novel partial T-cell depleted transplant that infuses high numbers of granulocyte colony-stimulating factor-mobilized CD34(+) selected PBSCs combined with a BMT-equivalent dose of non-mobilized donor T-cells...
February 7, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28167271/late-onset-cytopenias-following-haematopoietic-stem-cell-transplant-associated-with-viral-infection-and-cell-specific-antibodies
#15
Geoff Lucas, Steven Culliford, Nina Bendukidze, Julia Dahlstrom, Victoria Grandage, Ben Carpenter, Rachael Hough
This report describes a patient who received an allogeneic haematopoietic stem cell transplant and who, following a viral infection, developed late onset cytopenias associated with antibodies against red cells, platelets and granulocytes. Investigation of these cytopenias revealed the presence of lineage specific auto- and allo-antibodies, which were not present in either the donor or in the recipient prior to the viral infection. This case provides further evidence for the concept that viral challenges following HSCT can result in the production of cell specific antibodies that can have significant implications for patient management...
February 3, 2017: Transplant Immunology
https://www.readbyqxmd.com/read/28165036/the-promotion-of-erythropoiesis-via-the-regulation-of-reactive-oxygen-species-by-lactic-acid
#16
Shun-Tao Luo, Dong-Mei Zhang, Qing Qin, Lian Lu, Min Luo, Fu-Chun Guo, Hua-Shan Shi, Li Jiang, Bin Shao, Meng Li, Han-Shuo Yang, Yu-Quan Wei
The simultaneous increases in blood lactic acid and erythrocytes after intense exercise could suggest a link between lactate and the erythropoiesis. However, the effects of lactic acid on erythropoiesis remain to be elucidated. Here, we utilized a mouse model to determine the role of lactic acid in this process in parallel with studies using leukaemic K562 cells. Treatment of K562 cells in vitro with lactic acid increased the mRNA and protein expression of haemoglobin genes and the frequency of GPA(+) cells...
February 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28154370/risk-factors-for-acute-graft-versus-host-disease-after-allogeneic-haematopoietic-stem-cell-transplantation-a-single-center-experience
#17
Feiyan Wang, Bo Cai, Li Wang, Zhenyang Gu, Lan Luo, Huaping Wei, Shasha Zhao, Lixun Guan, Xiaoyu Wang, Lili Wang, Daihong Liu, Chunji Gao
BACKGROUND Acute graft-versus-host disease (aGVHD) remains the most common and challenging complication after allogeneic hematopoietic stem cell transplantation (allo-HSCT). An important obstacle to the therapeutic effect of aGVHD is the inability to identify risk factors for an individual patient at the onset of symptoms. We performed a retrospective study with the aim of defining clinically meaningful pre-transplantation risk factors for grades II-IV aGVHD patients. MATERIAL AND METHODS To identify pre-transplantation risk factors for grades II-IV aGVHD after allo-HSCT, we performed a retrospective study in 292 patients who underwent allo-HSCT at our center from January 2010 to July 2015...
February 3, 2017: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/28148951/targeting-the-latent-cytomegalovirus-reservoir-with-an-antiviral-fusion-toxin-protein
#18
B A Krishna, K Spiess, E L Poole, B Lau, S Voigt, T N Kledal, M M Rosenkilde, J H Sinclair
Reactivation of human cytomegalovirus (HCMV) in transplant recipients can cause life-threatening disease. Consequently, for transplant recipients, killing latently infected cells could have far-reaching clinical benefits. In vivo, myeloid cells and their progenitors are an important site of HCMV latency, and one viral gene expressed by latently infected myeloid cells is US28. This viral gene encodes a cell surface G protein-coupled receptor (GPCR) that binds chemokines, triggering its endocytosis. We show that the expression of US28 on the surface of latently infected cells allows monocytes and their progenitor CD34+ cells to be targeted and killed by F49A-FTP, a highly specific fusion toxin protein that binds this viral GPCR...
February 2, 2017: Nature Communications
https://www.readbyqxmd.com/read/28147367/mesenchymal-stromal-cell-therapy-in-crohn-s-disease
#19
REVIEW
Geoffrey M Forbes
BACKGROUND: Mesenchymal stromal cells (MSC) are multipotent adult stem cells with immunomodulatory properties. They uniquely express HLA class I antigen at a low level, and do not express HLA class II. Hence, for allogeneic administration, donor to recipient matching is not required; yet a prolonged chimeric state does not occur. Contrary to haematopoietic stem cell transplantation, cytotoxic drug therapy is not required to harvest, or administer, cells. Key Messages: MSC are obtained from marrow, adipose tissue or placenta...
2017: Digestive Diseases
https://www.readbyqxmd.com/read/28147232/use-of-ubiquitous-highly-heterozygous-copy-number-variants-and-digital-droplet-pcr-to-monitor-chimerism-after-allogeneic-haematopoietic-stem-cell-transplantation
#20
John B Whitlam, Ling Ling, Michael Swain, Tom Harrington, Oksana Mirochnik, Ian Brooks, Sara Cronin, Jackie Challis, Vida Petrovic, Damien L Bruno, Francoise Mechinaud, Rachel Conyers, Howard Slater
Chimerism analysis has an important role in the management of allogeneic haematopoietic stem cell transplantation. It informs response to disease relapse, graft rejection and graft-versus-host disease. We have developed a method for chimerism analysis using ubiquitous copy number variation (CNV), which has the benefit of a "negative background" against which multiple independent informative markers are absolutely quantified using digital droplet PCR. A panel of up to 38 CNV markers with homozygous deletion frequencies of approximately 0...
January 29, 2017: Experimental Hematology
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