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https://www.readbyqxmd.com/read/29778713/concluding-commentary-on-current-trends-to-enhance-the-clinical-safety-of-pediatric-transfusion-focusing-on-prevention-of-untoward-complications-of-hsc-transplantation-newer-strategies-for-improving-the-standards-of-safety-quality-of-stem-cells-expansion-for
#1
REVIEW
Irena Sniecinski, Jerard Seghatchian
Clinical practice and related diagnostic, development and research [DDR] strategies in pediatric transfusion and transplantation cover a broad range of multidisciplinary studies, performed by many professionals involved in this most challenging clinical field [1]. This commentary on the current position and future perspectives in pediatric transfusion field is aimed to highlight major unresolved transfusion complications in pediatric patients, namely red blood cell and platelet alloimmunisation, and new ones such as nosocomial infection, thrombosis and multi-organ failure...
May 16, 2018: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/29765424/public-awareness-on-cord-blood-banking-in-saudi-arabia
#2
Dunia Jawdat, Sulaiman AlTwijri, Hadeel AlSemari, Mayssa Saade, Ahmed Alaskar
Background: In the last decade, cord blood (CB) has proven to be a valuable source of hematopoietic stem cells for transplantation to treat many hematological disorders. Since then, many CB banks have been established worldwide. Our aim was to estimate the level of public awareness of CB banking in Saudi Arabia. Study Design and Methods: A self-administered questionnaire of 22 multiple choices was conveniently distributed, consisting of demographics, awareness measure, attitude toward banking preference, and donation for research data...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29753677/multicenter-phase-1-2-application-of-adenovirus-specific-t-cells-in-high-risk-pediatric-patients-after-allogeneic-stem-cell-transplantation
#3
Winnie Ip, Juliana M F Silva, Hubert Gaspar, Arindam Mitra, Shreenal Patel, Kanchan Rao, Robert Chiesa, Persis Amrolia, Kimberly Gilmour, Gul Ahsan, Mary Slatter, Andrew R Gennery, Robert F Wynn, Paul Veys, Waseem Qasim
BACKGROUND: Adenovirus (ADV) reactivation can cause significant morbidity and mortality in children after allogeneic stem cell transplantation. Antiviral drugs can control viremia, but viral clearance requires recovery of cell-mediated immunity. METHOD: This study was an open-label phase 1/2 study to investigate the feasibility of generating donor-derived ADV-specific T cells (Cytovir ADV, Cell Medica) and to assess the safety of pre-emptive administration of ADV-specific T cells in high-risk pediatric patients after allogeneic hematopoietic stem cell transplantation (HSCT) to treat adenoviremia...
May 9, 2018: Cytotherapy
https://www.readbyqxmd.com/read/29742390/20th-anniversary-of-isolation-of-human-embryonic-stem-cells-a-personal-perspective
#4
REVIEW
Joseph Itskovitz-Eldor
Following Jamie Thomson's lecture on primate embryonic stem cells (ESCs) at a meeting I had organized in March 1997, in Israel, to celebrate receipt of the Wolf Prize in Agriculture to my colleague and friend Neal First, frozen human embryos donated for research in Israel were shipped to Wisconsin. The five hESC lines (H1, H7, H9, H13, and H14) were established by early 1998 and transferred to my laboratory just before publication of their existence in Science, on November 6, 1998. The distribution of the cells from my institute to several laboratories, as early as 1999, enhanced the development of hESC research worldwide...
May 8, 2018: Stem Cell Reports
https://www.readbyqxmd.com/read/29730569/derivation-and-characterization-of-the-nih-registry-human-stem-cell-line-nyscf101-under-defined-feeder-free-conditions
#5
Ana Sevilla, Eliana Forero, Matthew Zimmer, Hector Martinez, Katie Reggio, Daniel Paull, Dieter Egli, Scott Noggle
The human embryonic stem cell line NYSCFe002-A was derived from a day 6 blastocyst in feeder-free and antibiotic free conditions. The blastocyst was voluntarily donated for research as surplus after in vitro fertilization treatment following informed consent. The NYSCFe002-A line expresses all the pluripotency markers and has the potential to differentiate into all three germ layers in vitro. The line presents normal karyotype and is mycoplasma free. This line is registered as NYSCF101 on the NIH Registry.
April 30, 2018: Stem Cell Research
https://www.readbyqxmd.com/read/29696461/reduced-intensity-conditioning-increases-risk-of-severe-cgvhd-identification-of-risk-factors-for-cgvhd-in-a-multicenter-setting
#6
Gabriel Afram, Jose Antonio Pérez Simón, Mats Remberger, Teresa Caballero-Velázquez, Rodrigo Martino, Jose Luis Piñana, Olle Ringden, Albert Esquirol, Lucia Lopez-Corral, Irene Garcia, Oriana López-Godino, Jordi Sierra, Dolores Caballero, Per Ljungman, Lourdes Vazquez, Hans Hägglund
Chronic graft-versus-host disease (cGVHD) remains a major cause of morbidity and mortality after allogeneic hematopoietic stem cell transplantation (HSCT). Aim is to identify risk factors for the development of cGVHD in a multicenter setting. Patients transplanted between 2000 and 2006 were analyzed (n = 820). Donors were HLA-identical siblings (57%), matched unrelated donors (30%), and HLA-A, B or DR antigen mismatched (13%). Reduced intensity conditioning (RIC) was given to 65% of patients. Overall incidence of cGVHD was 46% for patients surviving more than 100 days after HSCT (n = 747)...
April 25, 2018: Medical Oncology
https://www.readbyqxmd.com/read/29695308/the-presence-of-human-mesenchymal-stem-cells-of-renal-origin-in-amniotic-fluid-increases-with-gestational-time
#7
Md Shaifur Rahman, Lucas-Sebastian Spitzhorn, Wasco Wruck, Carsten Hagenbeck, Percy Balan, Nina Graffmann, Martina Bohndorf, Audrey Ncube, Pascale V Guillot, Tanja Fehm, James Adjaye
BACKGROUND: Established therapies for managing kidney dysfunction such as kidney dialysis and transplantation are limited due to the shortage of compatible donated organs and high costs. Stem cell-based therapies are currently under investigation as an alternative treatment option. As amniotic fluid is composed of fetal urine harboring mesenchymal stem cells (AF-MSCs), we hypothesized that third-trimester amniotic fluid could be a novel source of renal progenitor and differentiated cells...
April 25, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29653141/dual-mechanism-of-type-vii-collagen-transfer-by-bone-marrow-mesenchymal-stem-cell-extracellular-vesicles-to-recessive-dystrophic-epidermolysis-bullosa-fibroblasts
#8
Jeffrey McBride, Luis Rodriguez-Menocal, Ambar Candanedo, Wellington Guzman, Marta Garcia-Contreras, Evangelos Badiavas
Recessive dystrophic epidermolysis bullosa (RDEB) is a severe blistering disease resulting from a lack of type VII collagen production. Recent clinical trials have shown efficacy of bone marrow-derived mesenchymal stem cells (BM-MSCs) in the treatment of epidermolysis bullosa, including improved basement membrane restructuring and cutaneous wound healing. The mechanism as to how type VII collagen is transferred from donor stem cell to recipient RDEB cells has not been defined. Here, we submit the model that BM-MSC-derived extracellular vesicles serve at least two roles: 1) to help transport type VII collagen within the extracellular space; and 2) to feed RDEB fibroblasts with messenger RNA that codes for type VII collagen, resulting in COL7A1 translation and synthesis of type VII collagen alpha chain proteins by RDEB fibroblasts...
April 10, 2018: Biochimie
https://www.readbyqxmd.com/read/29599204/late-effects-after-hematopoietic-stem-cell-transplantation-for-beta-thalassemia-major-the-french-national-experience
#9
Ilhem Rahal, Claire Galambrun, Yves Bertrand, Nathalie Garnier, Catherine Paillard, Pierre Frange, Corinne Pondarré, Jean Hugues Dalle, Regis Peffault de Latour, Mauricette Michallet, Dominique Steschenko, Despina Moshous, Patrick Lutz, Jean Louis Stephan, Pierre Simon Rohrlich, Ibrahim Yakoub-Agha, Francoise Bernaudin, Christophe Piguet, Nathalie Aladjidi, Catherine Badens, Claire Berger, Gérard Socié, Cécile Dumesnil, Marie Pierre Castex, Marilyne Poirée, Anne Lambilliotte, Caroline Thomas, Pauline Simon, Pascal Auquier, Gerard Michel, Anderson Loundou, Imane Agouti, Isabelle Thuret
In this retrospective study, we evaluate long-term complications in nearly all β-thalassemia-major patients who successfully received, in France, allogeneic hematopoietic stem cell transplantation. 99 patients were analysed with a median age of 5.9 years at transplantation. The median duration of clinical follow-up was 12 years. All conditioning regimen were myeloablative, most often based on busulfan combined with cyclophosphamide and more than 90% of patients underwent a transplant from a matched sibling donor...
March 29, 2018: Haematologica
https://www.readbyqxmd.com/read/29574750/impact-of-delayed-umbilical-cord-clamping-on-public-cord-blood-donations-can-we-help-future-patients-and-benefit-infant-donors
#10
Rodica Ciubotariu, Andromachi Scaradavou, Ilinca Ciubotariu, Michal Tarnawski, Sara Lloyd, Maria Albano, Ludy Dobrila, Pablo Rubinstein, Amos Grunebaum
BACKGROUND: Cord blood (CB) is a widely accepted stem cell source and its clinical utilization depends, to a great extent, on its cell content. Birth-to-clamping (BTC) time of umbilical cord determines placental transfusion to the newborn, and the remaining blood that can be collected and banked. The 2017 Committee Opinion of the American College of Obstetrics and Gynecologists (ACOG) recommends a delay of "at least 30-60 seconds" before clamping the cord for all newborns to ensure adequate iron stores...
March 25, 2018: Transfusion
https://www.readbyqxmd.com/read/29567393/ascorbic-acid-metabolism-and-functions-a-comparison-of-plants-and-mammals
#11
Nicholas Smirnoff
Ascorbic acid is synthesised by eukaryotes, the known exceptions being primates and some other animal groups which have lost functional gulonolactone oxidase. Prokaryotes do not synthesise ascorbate and do not need an ascorbate supply, so the functions that are essential for mammals and plants are not required or are substituted by other compounds. The ability of ascorbate to donate electrons enables it to act as a free radical scavenger and to reduce higher oxidation states of iron to Fe2+ . These reactions are the basis of its biological activity along with the relative stability of the resulting resonance stabilised monodehydroascorbate radical...
March 19, 2018: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29555414/medical-and-ethical-considerations-on-hematopoietic-stem-cells-mobilization-for-healthy-donors
#12
V Moalic-Allain
Hematopoietic stem cell transplantation is a common procedure potentially beneficial to many individuals with cancer, hematological, or inherited disorders, and has highlighted the need of related or unrelated donors to perform allograft. Donation of hematopoietic stem cells, either through bone marrow harvest or peripheral blood stem cell collection, is well-established and widespread. Over the past two decades, the peripheral blood stem cell collection by aphaeresis has become the main source of hematopoietic stem cells for transplantation, due to faster engraftment and practicability and lower risk of relapse for high-risk patients...
March 16, 2018: Transfusion Clinique et Biologique: Journal de la Société Française de Transfusion Sanguine
https://www.readbyqxmd.com/read/29528446/characterization-of-migratory-primordial-germ-cells-in-the-aorta-gonad-mesonephros-of-a-4-5-week-old-human-embryo-a-toolbox-to-evaluate-in-vitro-early-gametogenesis
#13
Maria Gomes Fernandes, Monika Bialecka, Daniela C F Salvatori, Susana M Chuva de Sousa Lopes
STUDY QUESTION: Which set of antibodies can be used to identify migratory and early post-migratory human primordial germ cells (hPGCs)? STUDY FINDING: We validated the specificity of 33 antibodies for 31 markers, including POU5F1, NANOG, PRDM1 and TFAP2C as specific markers of hPGCs at 4.5 weeks of development of Carnegie stage (CS12-13), whereas KIT and SOX17 also marked the intra-aortic hematopoietic stem cell cluster in the aorta-gonad-mesonephros (AGM). WHAT IS KNOWN ALREADY: The dynamics of gene expression during germ cell development in mice is well characterized and this knowledge has proved crucial to allow the development of protocols for the in-vitro derivation of functional gametes...
March 8, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29524881/human-umbilical-cord-mesenchymal-stem-cells-improve-irradiation-induced-skin-ulcers-healing-of-rat-models
#14
Zhongshan Liu, Daojiang Yu, Jianwei Xu, Xiujie Li, Xianyao Wang, Zhixu He, Tianlan Zhao
Irradiation-induced skin ulcers can be resultant from nuclear accident or reaction to radiation therapy of tumor and is intractable for healing. Human umbilical cord mesenchymal stem cells (hUC-MSCs) have been considered to be the potential therapeutic tools for tissue regeneration. However, the underlying mechanisms are still not well understood. This study aims to investigate the effects of hUC-MSCs on irradiation-induced skin ulcers healing and the related mechanisms. The ulcers were induced by irradiating the skin of adult SD rats...
May 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29515066/-japan-marrow-donor-program-and-its-coordinating-process-current-situations
#15
Tsuneaki Hirakawa, Saiko Kurosawa, Kinuko Tajima, Yusuke Yamazaki, Nami Ikeda, Hiroto Kojima, Hidenori Tanaka, Heiwa Kanamori, Koichi Miyamura, Yoshihisa Kodera, Takahiro Fukuda, Japan Marrow Donor Program
We evaluated 18,487 patients and 223,842 cases of donor coordination among patients enrolled in the Japan Marrow Donor Program (JMDP) from January 2004 to December 2013. For patients who underwent stem cell transplantation from a JMDP donor [unrelated bone marrow transplantation (UBMT)], the median number of coordination and days from registration to transplantation were 11 and 146, respectively. Among enrolled patients, 40% did not undergo UBMT. With the increased estimated number of human leukocyte antigen 6/6-matched donors, the probability of undergoing UBMT was higher, and in those who underwent UBMT, the duration of coordination was shorter...
2018: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/29498085/what-s-in-a-name-are-cultured-red-blood-cells-natural
#16
Emma King, Catherine Lyall
The case of cultured red blood cells (RBCs) currently being grown in a laboratory for future use in human transfusion raises questions about the ontological status of such products of modern biotechnology. This paper presents results from a six-year ethnographic study involving interviews, focus groups and other forms of engagement with the scientific research team and other stakeholders, including public groups, which sought to understand respondents' reactions to cultured RBCs. These cells, derived from stem cell technology, have the potential to address the global shortage of donated blood...
May 2018: Sociology of Health & Illness
https://www.readbyqxmd.com/read/29477167/human-pre-gastrulation-development
#17
Sissy E Wamaitha, Kathy K Niakan
Understanding the progression of early human embryonic development prior to implantation is of fundamental biological importance. Greater insights into early developmental events may lead to clinical improvements, not only via the establishment of novel stem cell models with increased potential or more physiological relevance, but also by uncovering some underlying causes of infertility, miscarriages, and developmental disorders. The majority of human embryos available for study are those donated to research once they are surplus to family building following in vitro fertilization, though in some countries it is also possible to create embryos using donated gametes...
2018: Current Topics in Developmental Biology
https://www.readbyqxmd.com/read/29410372/addressing-ethical-and-procedural-principles-for-unrelated-allogeneic-hematopoietic-progenitor-cell-donation-in-a-changing-medical-environment
#18
Suzanna M van Walraven, Torstein Egeland, Veronica Borrill, Grazia Nicoloso-de Faveri, Gabi Rall, Jeff Szer
No abstract text is available yet for this article.
February 2, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29402858/skeletal-extracellular-matrix-supports-cardiac-differentiation-of-embryonic-stem-cells-a-potential-scaffold-for-engineered-cardiac-tissue
#19
Xian Hong, Yin Yuan, Xiaoxi Sun, Meiling Zhou, Guangyu Guo, Quan Zhang, Jürgen Hescheler, Jiaoya Xi
BACKGROUND/AIMS: Decellularized cardiac extracellular matrix (cECM) has been widely considered as an attractive scaffold for engineered cardiac tissue (ECT), however, its application is limited by immunogenicity and shortage of organ donation. Skeletal ECM (sECM) is readily available and shows similarities with cECM. Here we hypothesized that sECM might be an alternative scaffold for ECT strategies. METHODS: Murine ventricular tissue and anterior tibial muscles were sectioned into 300 mm-thick, and then cECM and sECM were acquired by pretreatment/SDS/TritonX-100 three-step-method...
2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29394956/establishment-of-xenogeneic-serum-free-culture-methods-for-handling-human-dental-pulp-stem-cells-using-clinically-oriented-in-vitro-and-in-vivo-conditions
#20
Mai Mochizuki, Taka Nakahara
BACKGROUND: Currently, ex-vivo handling of stem cells, including transport after harvest and therapeutic preparation, is generally done in culture media containing fetal bovine serum (FBS), which promotes cell attachment, proliferation, and differentiation. However, because of safety concerns associated with the use of FBS, including potential transmission of zoonotic agents and transplant rejection because of the incorporation of foreign proteins into the stem cells, there is a need for xenogeneic serum-free culture media for clinical handling of stem cells...
February 3, 2018: Stem Cell Research & Therapy
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