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Hematopoetic stem cell

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https://www.readbyqxmd.com/read/27903025/-antifungal-medication-new-substances-new-experiences
#1
Dieter Buchheidt, Wolf-Karsten Hofmann
The incidence of life threatening invasive fungal infections in patients with hematological malignancies during intensive chemotherapy or after hematopoetic stem cell transplantation, patients after solid organ transplantation, ICU patients and premature infants is rising. Mortality rates of invasive fungal infections, caused by Aspergillus species or mucormycetes, may reach 100%, in spite of considerable progress in diagnosis, antifungal prophylaxis and therapy. Comprehensive, profound knowledge of specific diagnostic and current treatment algorithms is essential to improve the prognosis of patients suffering from systemic fungal infections; this article encompasses recent developments in the field of antifungal treatment...
November 2016: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/27862750/skin-lesion-in-a-patient-with-acute-myeloid-leukemia
#2
Atul Kothari, Sara C Shalin, Juan Carlos Crescencio, Mary J Burgess
We present the case of a 51-year-old man with acute myeloid leukemia who developed fevers with a skin lesion following the first cycle of induction chemotherapy. Skin biopsy showed evidence of invasive fungal infection. Cultures remained negative, but polymerase chain reaction on tissue detected Rhizopus oryzae complex. Patient was started on liposomal amphotericin B and underwent surgical debridement. He was switched to posaconazole, with plans for allogeneic hematopoetic stem cell transplant in the future...
November 16, 2016: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/27729946/status-of-stem-cells-in-diabetic-nephropathy-predictive-and-preventive-potentials
#3
Babak Baban, Jun Yao Liu, Samuel Payne, Worku Abebe, Jack C Yu, Mahmood S Mozaffari
BACKGROUND: Recruitment of stem cells to sites of tissue injury constitutes an important mechanism aimed at tissue repair and regeneration. However, it is not clear how the diabetic milieu affects the viability of endogenous stem cells. Thus, we tested the hypothesis that diabetes mellitus is associated with increased apoptosis which, in turn, contributes to reduction in stem cells and the manifestation of type 2 diabetic nephropathy. METHODS: Sixteen-week-old male obese type 2 diabetic db/db mice, and their appropriate controls, were used for assessment of the status of endothelial progenitor cells (EPCs), mesenchymal stem cells (MSCs), and hematopoetic stem cells (HSCs) in the peripheral blood and renal tissue using specific cell markers...
2016: EPMA Journal
https://www.readbyqxmd.com/read/27658761/a-prospective-study-on-the-natural-history-of-patients-with-profound-combined-immunodeficiency-p-cid-an-interim-analysis
#4
Carsten Speckmann, Sam Doerken, Alessandro Aiuti, Michael H Albert, Waleed Al-Herz, Luis M Allende, Allessia Scarselli, Tadej Avcin, Ruy Perez-Becker, Caterina Cancrini, Andrew Cant, Silvia Di Cesare, Andrea Finocchi, Alain Fischer, H Bobby Gaspar, Sujal Ghosh, Andrew Gennery, Kimberly Gilmour, Luis I González-Granado, Monica Martinez-Gallo, Sophie Hambleton, Fabian Hauck, Manfred Hoenig, Despina Moshous, Benedicte Neven, Tim Niehues, Luigi Notarangelo, Capucine Picard, Nikolaus Rieber, Ansgar Schulz, Klaus Schwarz, Markus G Seidel, Pere Soler-Palacin, Polina Stepensky, Brigitte Strahm, Thomas Vraetz, Klaus Warnatz, Christine Winterhalter, Austen Worth, Sebastian Fuchs, Annette Uhlmann, Stephan Ehl
BACKGROUND: Absent T cell immunity resulting in life-threatening infections provides a clear rationale for hematopoetic stem cell transplantation (HSCT) in patients with severe combined immunodeficiency (SCID). Combined immunodeficiencies (CID) and "atypical" SCID show reduced, not absent T-cell immunity. If associated with infections or autoimmunity, they represent profound CID (P-CID), for which outcome data are insufficient for unambiguous early transplant decisions. OBJECTIVES: We recruit non-transplanted P-CID patients aged 1-16 years to compare natural histories of severity-matched patients with/without subsequent transplantation and to determine whether immunological and/or clinical parameters may be predictive for outcome...
September 19, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27556191/role-of-ultrasound-in-complications-of-hematopoetic-stem-cell-transplantation
#5
Anil Chauhan, Nauroze A Faizi, Yin Jie Chen, Lisa P Jones, Naveen Garg, Priya R Bhosale
Hematopoetic stem cell transplantation (HSCT) is an established therapeutic option for both malignant and nonmalignant indications, whose incidence has continued to increase in recent years. Because of its lower cost and lack of radiation exposure, ultrasound examination is often the first-line imaging modality in evaluating patients both before and after HSCT. It is important for radiologists to be aware of sonographic manifestations of the complications that may arise from HSCT. In this study, we will review the basics of HSCT, the role of imaging, and ultrasound examination findings in common and uncommon complications arising from HSCT...
September 2016: Ultrasound Quarterly
https://www.readbyqxmd.com/read/27543915/group-based-trajectory-modeling-of-distress-and-well-being-among-caregivers-of-children-undergoing-hematopoetic-stem-cell-transplant
#6
Stephen A Sands, Laura Mee, Abraham Bartell, Sharon Manne, Katie A Devine, Mirko Savone, Deborah A Kashy
OBJECTIVE : To examine the trajectories of caregiver psychological responses in the year following their child's hematopoetic stem cell transplant (HSCT), and whether cognitive and social processing strategies differentiated between trajectories.  METHOD : One hundred and eight caregivers randomized to the control condition of a cognitive-behavioral intervention study completed measures of distress, coping, and social support at baseline, 1 month, 6 months, and 1 year post HSCT of their child.  RESULTS : The majority reported moderate or low anxiety, depression, or distress that decreased over time, but a small group demonstrated high anxiety, depression, or distress that persisted or increased over time...
August 20, 2016: Journal of Pediatric Psychology
https://www.readbyqxmd.com/read/27540139/pretransplantion-minimal-residual-disease-with-cytogenetic-and-molecular-diagnostic-features-improves-risk-stratification-in-acute-myeloid-leukemia
#7
Betül Oran, Jeff L Jorgensen, David Marin, Sa Wang, Sairah Ahmed, Amin M Alousi, Borje S Andersson, Qaiser Bashir, Roland Bassett, Genevieve Lyons, Julianne Chen, Katy Rezvani, Uday Popat, Partow Kebriaei, Keyur Patel, Gabriela Rondon, Elisabeth J Shpall, Richard E Champlin
Our aim was to improve outcome prediction after allogeneic hematopoetic stem cell transplantation in acute myeloid leukemia by combining cytogenetic and molecular data at diagnosis with minimal residual disease assessment by multicolor flow-cytometry at transplantation. Acute myeloid leukemia patients in first complete remission with minimal residual disease assessment at transplant were included and categorized by European LeukemiaNet classification. Primary outcome was 1- year relapse incidence after transplant...
August 18, 2016: Haematologica
https://www.readbyqxmd.com/read/27457874/-guidelines-for-vaccination-of-immunocompromised-individuals
#8
Ursula Wiedermann, Harald H Sitte, Heinz Burgmann, Alexander Eser, Petra Falb, Heidemarie Holzmann, Maria Kitchen, Marcus Köller, Herwig Kollaritsch, Michael Kundi, Hans Lassmann, Ingomar Mutz, Winfried F Pickl, Elisabeth Riedl, Maria Sibilia, Florian Thalhammer, Barbara Tucek, Werner Zenz, Karl Zwiauer
Immunosuppression of various origins is associated with an increased risk of infection; therefore the prevention of infectious diseases by vaccination is especially important in immunocompromised patients. However, the response to vaccinations is often reduced in these risk groups and the application of live vaccines is contraindicated during immunosuppression.In the following expert statement, recommendations for vaccination were created on the basis of current evidence and theoretical/immunological considerations...
August 2016: Wiener Klinische Wochenschrift
https://www.readbyqxmd.com/read/27429520/improving-outcome-of-thalassemia-with-hematopoetic-stem-cell-transplantation-an-experience-of-gujarat-cancer-research-institute
#9
Shreeniwas Raut, Sandip Shah, Kamalesh Shah, Kinnari Patel, Shailesh Talati, Sonia Parikh, Asha Anand, Harsha Panchal, Apurva Patel
Total 26 children of thalassemia underwent hematopoetic stem cell transplantation from September 2006 to December 2014. Out of these 17 were matched sibling transplantation (MST) and 9 were unrelated umbilical cord blood transplantation (UCT). Median age was 4 years. At a median follow up of 46.5 months, 12 of 17 (70 %) MST and 3 out of 9 (33.33 %) UCT were cured of thalassemia. Three (11.53 %) patients died due to transplant related mortality. Average cost of MST was 6 lakhs and that of UCT was 20 lakhs...
September 2016: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/27322507/the-evaluation-of-nt-procnp-c-reactive-protein-and-serum-amyloid-a-protein-concentration-in-patients-with-multiple-myeloma-undergoing-stem-cell-transplantation
#10
Ryszard Tomasiuk, Krzysztof Gawroński, Piotr Rzepecki, Michał Rabijewski, Marek Cacko
The importance of proinflamatory cytokines and acute phase proteins in pathogenesis and progression of MM is well known. However, there are any studies evaluating the role of NT-proCN in management and treatment of MM. The aim of our study was to evaluate the concentration of NT-proCNP and acute phase proteins in patients with MM before and after stem cell transplantation. We involved 40 newly diagnosed MM patients in stage III according to the Durie-Salmon classification and treated with high dose of melphalan (200mg/m2) prior to ASCT...
August 2016: Leukemia Research
https://www.readbyqxmd.com/read/27299503/loss-of-sfrp2-in-the-niche-amplifies-stress-induced-cellular-responses-and-impairs-the-in-vivo-regeneration-of-the-hematopoietic-stem-cell-pool
#11
Franziska Ruf, Christina Schreck, Alina Wagner, Sandra Grziwok, Charlotta Pagel, Sandra Romero, Matthias Kieslinger, Akihiko Shimono, Christian Peschel, Katharina S Götze, Rouzanna Istvanffy, Robert A J Oostendorp
Sfrp2 is overexpressed in stromal cells which maintain hematopoietic stem cells (HSCs) during in vitro culture. We here showed, that coculture of hematopoetic cells with stromal cells with reduced expression of Sfrp2 increases the number lineage-negative Kit(+) Sca-1(+) (LSK) and progenitor cells in vitro. The LSK cells from these cocultures showed activation of canonical Wnt signaling, higher levels of Ki-67, BrdU incorporation, and the number of γH2A.X positive foci. Total repopulating activity of these cultures was, however, diminished, indicating loss of HSC...
September 2016: Stem Cells
https://www.readbyqxmd.com/read/27151728/diffuse-large-b-cell-lymphoma-and-polycythemia-vera-discovered-at-the-onset-a-rare-association-and-its-possible-importance-in-lymphoma-prognosis
#12
Viola Maria Popov, Camelia Marioara Dobrea, Mihai Popescu, Iancu Emil Pleşea, Valentin Titus Grigorean, Ruxandra Diana Sinescu, Victor Dan Eugen Strâmbu
UNLABELLED: Diffuse large B-cell lymphoma (DLBCL) represent the most frequently non-Hodgkin's lymphoma (NHL) (over 30%), especially in developing countries. Many associations of NHL with another neoplasia were described following chemotherapy or radiotherapy regimens. The coexistence of DLBCL with myeloproliferative neoplasms (MPNs) JAK2V617F positive at the onset was very rare reported in the literature. We describe a clinical case of a 52-year-old man who presented both diagnoses at the onset - DLBCL and MPN - polycythemia vera (PV) type...
2016: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/26990469/cyclosporine-induced-sebaceous-hyperplasia-in-a-hematopoetic-stem-cell-transplant-patient-delayed-onset-of-a-common-adverse-event
#13
Reason Wilken, Maxwell A Fung, Vivian Y Shi, Michelle Y Cheng, Forum Patel, Hawa Sultani, Emanual Maverakis
Cyclosporine-induced sebaceous hyperplasia (SH) is a well-documented entity, occurring in up to 30% of renal transplant patients treated with cyclosporine and has also been reported to occur following heart or hematopoetic stem cell transplantation (HCST). Cyclosporine has a stimulatory effect on undifferentiated sebocytes, resulting in the clinical and histologic findings in these patients. Sebaceous hyperplasia most commonly presents as asymptomatic papules over the face, chest, or groin. Herein we describe a case of a 27-year-old man who developed facial sebaceous hyperplasia five months after completing cyclosporine therapy for cutaneous graft versus host disease (GVHD) following HSCT...
January 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/26913620/a-randomized-clinical-trial-of-a-parent-focused-social-cognitive-processing-intervention-for-caregivers-of-children-undergoing-hematopoetic-stem-cell-transplantation
#14
Sharon Manne, Laura Mee, Abraham Bartell, Stephen Sands, Deborah A Kashy
OBJECTIVE: Providing care to one's child during and after a hematopoietic stem cell transplant (HSCT) is a universally stressful experience, but few psychological interventions have been developed to reduce caregiver distress. The goal of this study was to test the efficacy of a brief cognitive-behavioral intervention delivered to primary caregivers. METHOD: Two hundred eighteen caregivers were assigned either best-practice psychosocial care (BPC) or a parent social-cognitive intervention program (P-SCIP)...
May 2016: Journal of Consulting and Clinical Psychology
https://www.readbyqxmd.com/read/26809742/studies-of-human-polyomaviruses-with-hpyv7-bkpyv-and-jcpyv-present-in-urine-of-allogeneic-hematopoietic-stem-cell-transplanted-patients-with-or-without-hemorrhagic-cystitis
#15
J Franzén, T Ramqvist, G Bogdanovic, N Grün, J Mattson, T Dalianis
BACKGROUND: BK polyomavirus (BKPyV) can cause hemorrhagic cystitis (HC) in allogeneic hematopoietic stem cell transplant (allo-HSCT) patients and polyomavirus-associated nephritis in renal transplant patients, while JC polyomavirus (JCPyV) can generate progressive multifocal leukoencephalopathy in immunocompromised individuals. Since 2007, additional human polyomaviruses (HPyVs) have been identified. In this study, we examined the urines of allo-HSCT patients for possible presence of polyomaviruses BKPyV, JCPyV, KIPyV, WUPyV, MCPyV, HPyV6, HPyV7, TSPyV, HPyV9, and HPyV10 (MWPyV)...
April 2016: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/26607449/temporal-fate-mapping-reveals-age-linked-heterogeneity-in-naive-t-lymphocytes-in-mice
#16
Thea Hogan, Graeme Gossel, Andrew J Yates, Benedict Seddon
Understanding how our T-cell compartments are maintained requires knowledge of their population dynamics, which are typically quantified over days to weeks using the administration of labels incorporated into the DNA of dividing cells. These studies present snapshots of homeostatic dynamics and have suggested that lymphocyte populations are heterogeneous with respect to rates of division and/or death, although resolving the details of such heterogeneity is problematic. Here we present a method of studying the population dynamics of T cells in mice over timescales of months to years that reveals heterogeneity in rates of division and death with respect to the age of the host at the time of thymic export...
December 15, 2015: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/26605456/umbilical-cord-blood-counselling-collection-and-banking
#17
B Anthony Armson, David S Allan, Robert F Casper
OBJECTIVE: To review current evidence regarding umbilical cord blood counselling, collection, and banking and to provide guidelines for Canadian health care professionals regarding patient education, informed consent, procedural aspects, and options for cord blood banking in Canada. OPTIONS: Selective or routine collection and banking of umbilical cord blood for future stem cell transplantation for autologous (self) or allogeneic (related or unrelated) treatment of malignant and non-malignant disorders in children and adults...
September 2015: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/26410459/flow-cytometric-detection-of-altered-signaling-in-myelodysplastic-syndrome-and-cytopenia
#18
Juehua Gao, Suchitra Swaminathan, Navin Pai, Zachary Johnson, Yi-Hua Chen, LoAnn Peterson, Charles Goolsby
Multiparameter flow cytometric analysis allows for precise evaluation of growth factor stimulated intracellular signaling in distinct immunophenotype defined hematopoetic populations. Our analysis of intracellular phosphoprotein in response to major hematopoietic growth factors or cytokines showed several interesting findings. Although there was no characteristic signaling abnormality that was diagnostic for MDS, MDS cases were often associated with more signaling aberrancies involving more cellular populations...
December 2015: Leukemia Research
https://www.readbyqxmd.com/read/26300240/autologous-hematopoietic-stem-cell-transplantation-reverses-skin-fibrosis-but-does-not-change-skin-vessel-density-in-patients-with-systemic-sclerosis
#19
T Daikeler, E Kump, M Stern, T Hügle, A Hij, P Haeuserman, D Farge
Hematopoetic stem cell transplantation (HSCT) improves survival in patients with severe systemic sclerosis (SSc) by resetting the immune system. We studied how HSCT acts on the key SSc skin pathology findings (fibrosis and vascularization). In mean, 3 skin punch biopsies per patient (range 2-6) were analyzed from 13 patients (5 females) with severe diffuse SSc before and up to 96 months after HSCT. Fibrosis of the four skin layers was graded semi-quantitatively and an overall fibrosis score was then calculated...
September 2015: Pathologie-biologie
https://www.readbyqxmd.com/read/25989033/-clinical-signs-of-ocular-graft-versus-host-disease
#20
REVIEW
T Dietrich-Ntoukas
BACKGROUND: Ocular graft-versus-host disease (GvHD) is mainly an inflammatory ocular surface disorder after allogeneic hematopoetic stem cell transplantation (HSCT) with increasing incidence. METHODS: We present an overview on clinical signs of ocular GvHD. RESULTS: Ocular chronic GvHD representing a severe ocular surface disease is a long-term problem after allogeneic HSCT. It is not only associated with reduced quality of life because of dry eye symptoms but can also impair visual acuity and lead to blindness due to corneal complications...
May 2015: Klinische Monatsblätter Für Augenheilkunde
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