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https://www.readbyqxmd.com/read/28729147/adult-umbilical-cord-blood-transplantation-using-myeloablative-thiotepa-total-body-irradiation-and-fludarabine-conditioning
#1
Sarah Anand, Samantha Thomas, Kelly Corbet, Cristina Gasparetto, Gwynn D Long, Richard Lopez, Ashley K Morris, David A Rizzieri, Keith M Sullivan, Anthony D Sung, Stefanie Sarantopoulos, Nelson J Chao, Mitchell E Horwitz
Treatment related mortality (TRM) remains elevated in adult patients undergoing umbilical cord blood (UCB) transplantation, including an early rise in TRM suggestive of excessive toxicity associated with the standard myeloablative total body irradiation (TBI), fludarabine, and cyclophosphamide regimen. In an attempt to reduce regimen-related toxicity, we previously studied a modified myeloablative regimen with total body irradiation (1350 cGy) and fludarabine (160 mg/m(2)); TRM was decreased but neutrophil engraftment was suboptimal...
July 17, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28716720/met-signaling-mediates-intestinal-crypt-villus-development-regeneration-and-adenoma-formation-and-is-promoted-by-stem-cell-cd44-isoforms
#2
Sander P J Joosten, Jurrit Zeilstra, Harmen van Andel, R Clinton Mijnals, Joost Zaunbrecher, Annet A M Duivenvoorden, Marc van de Wetering, Hans Clevers, Marcel Spaargaren, Steven T Pals
BACKGROUND & AIMS: Resistance of metastatic human colorectal cancer cells to drugs that block epidermal growth factor receptor (EGFR) signaling could be caused by aberrant activity of other receptor tyrosine kinases, activating overlapping signaling pathways. One of these receptor tyrosine kinases could be MET, the receptor for hepatocyte growth factor (HGF). We investigated how MET signaling, and its interaction with CD44 (a putative MET co-receptor regulated by Wnt signaling and highly expressed by intestinal stem cells [ISCs] and adenomas) affects intestinal homeostasis, regeneration, and adenoma formation in mini-gut organoids and mice...
July 14, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28711727/a-chemotherapy-only-regimen-of-busulfan-melphalan-and-fludarabine-and-rabbit-atg-followed-by-allogeneic-t-cell-depleted-hematopoietic-stem-cell-transplants-for-the-treatment-of-myeloid-malignancies
#3
Barbara Spitzer, Ann A Jakubowski, Esperanza B Papadopoulos, Kirsten Fuller, Patrick D Hilden, James W Young, Juliet Barker, Guenther Koehne, Miguel-Angel Perales, Katharine C Hsu, Marcel R M van den Brink, Nancy A Kernan, Susan E Prockop, Andromachi Scaradavou, Hugo Castro-Malaspina, Richard J O'Reilly, Farid Boulad
We sought to develop a myeloablative chemotherapeutic regimen to secure consistent engraftment of T-cell depleted (TCD) hematopoietic stem cell transplants (HSCT) without the need for total body irradiation, thereby reducing toxicity, while maintaining low rates of GvHD and without increasing relapse. We investigated the myeloablative combination of busulfan and melphalan, with the immunosuppressive agents fludarabine and rabbit anti-thymocyte gloubin (r-ATG) as cytoreduction prior to a T-cell depleted HSCT...
July 12, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28706973/splenocyte-infusion-and-whole-body-irradiation-for-induction-of-peripheral-tolerance-in-porcine-lung-transplantation-modifications-of-the-preconditioning-regime-for-improved-clinical-feasibility
#4
Katharina Jansson, Karla Dreckmann, Wiebke Sommer, Murat Avsar, Jawad Salman, Thierry Siemeni, Ann-Kathrin Knöfel, Linda Pauksch, Jens Gottlieb, Jörg Frühauf, Martin Werner, Danny Jonigk, Martin Strüber, Axel Haverich, Gregor Warnecke
BACKGROUND: Preoperative low-dose whole-body irradiation (IRR) with 1.5 and 7 Gy thymic IRR of the recipient, combined with a perioperative donor splenocyte infusion lead to reliable donor specific peripheral tolerance in our allogeneic porcine lung transplantation model. To reduce the toxicity of this preconditioning regime, modifications of the IRR protocol and their impact on allograft survival were assessed. METHODS: Left-sided single lung transplantation from major histocompatibility complex and sex mismatched donors was performed in 14 adult female minipigs...
July 2017: Transplantation Direct
https://www.readbyqxmd.com/read/28696051/unexpected-acute-renal-injury-after-high-dose-etoposide-phosphate-and-total-body-irradiation-in-children-undergoing-hematopoietic-stem-cell-transplantation
#5
C Cordero, C Loboda, I Clerc-Urmès, L Clément, C Pochon, P Chastagner
High-dose etoposide phosphate, a water-soluble prodrug of etoposide, may be used after total body irradiation (TBI) in pediatric allogeneic bone marrow transplantation for lymphoblastic leukemia. In a retrospective study of 21 children treated at the Nancy University Hospital (2000-2014), we identified unprecedentedly an unexpectedly high incidence (57%) of acute renal injury following etoposide phosphate infusion. Patients who developed renal function impairment experienced more severe mucositis but had outcomes similar to those who did not...
July 11, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28696044/practice-patterns-of-palliative-radiation-therapy-in-pediatric-oncology-patients-in-an-international-pediatric-research-consortium
#6
Avani Dholakia Rao, Qinyu Chen, Ralph P Ermoian, Sara R Alcorn, Maria Luisa S Figueiredo, Michael J Chen, Karin Dieckmann, Shannon M MacDonald, Matthew M Ladra, Daria Kobyzeva, Alexey V Nechesnyuk, Kristina Nilsson, Eric C Ford, Brian A Winey, Rosangela C Villar, Stephanie A Terezakis
BACKGROUND/OBJECTIVES: The practice of palliative radiation therapy (RT) is based on extrapolation from adult literature. We evaluated patterns of pediatric palliative RT to describe regimens used to identify opportunity for future pediatric-specific clinical trials. DESIGN/METHODS: Six international institutions with pediatric expertise completed a 122-item survey evaluating patterns of palliative RT for patients ≤21 years old from 2010 to 2015. Two institutions use proton RT...
July 11, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28694461/endothelial-hey2-deletion-reduces-endothelial-to-mesenchymal-transition-and-mitigates-radiation-proctitis-in-mice
#7
Elodie Mintet, Jérémy Lavigne, Vincent Paget, Georges Tarlet, Valérie Buard, Olivier Guipaud, Jean-Christophe Sabourin, Maria-Luisa Iruela-Arispe, Fabien Milliat, Agnès François
The current study evaluated the role of Hey2 transcription factor in radiation-induced endothelial-to-mesenchymal transition (EndoMT) and its impact on radiation-induced tissue damage in mice. Phenotypic modifications of irradiated, Hey2 siRNA- and Hey2 vector plasmid-transfected human umbilical vein endothelial cells (HUVECs) resembling EndoMT were monitored by qPCR, immunocytochemistry and western blots. Subsequently, in mice, a Cre-LoxP strategy for inactivation of Hey2 specifically in the endothelium was used to study the biological consequences...
July 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28691256/clinical-usefulness-of-mlcs-in-robotic-radiosurgery-systems-for-prostate-sbrt
#8
Masashi Tomida, Takeshi Kamomae, Junji Suzuki, Yoichi Ohashi, Yoshiyuki Itoh, Hiroshi Oguchi, Takahito Okuda
Stereotactic body radiation therapy (SBRT) using recently introduced multileaf collimators (MLC) is preferred over circular collimators in the treatment of localized prostate cancer. The objective of this study was to assess the clinical usefulness of MLCs in prostate SBRT by comparing the effectiveness of treatment plans using fixed collimators, variable collimators, and MLCs and by ensuring delivery quality assurance (DQA) for each. For each patient who underwent conventional radiation therapy for localized prostate cancer, mock SBRT plans were created using a fixed collimator, a variable collimator, and an MLC...
July 10, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28688909/are-we-making-an-impact-with-incident-learning-systems-analysis-of-quality-improvement-interventions-using-total-body-irradiation-as-a-model-system
#9
Aileen Kim, Eric Ford, Matthew Spraker, Jing Zeng, Ralph Ermoian, Loucille Jordan, Gabrielle Kane, Matthew Nyflot
PURPOSE: Despite increasing interest in incident learning systems (ILS) to improve safety and quality in radiation oncology, little is known about interventions developed in response to safety data. We used total body irradiation (TBI) as a model system to study the effectiveness of interventions from our institutional ILS. METHODS AND MATERIALS: Near-miss event reports specific to TBI were identified from a departmental ILS from March 2012 to December 2015. The near-miss risk index was rated at multidisciplinary review from 0 (no potential harm) to 4 (critical potential harm)...
June 6, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28686531/microenvironment-and-dose-delivery-dependent-response-after-exposure-to-ionizing-radiation-in-human-colorectal-cancer-cell-lines
#10
Vaidotas Stankevicius, Gintautas Vasauskas, Ryte Rynkeviciene, Jonas Venius, Vita Pasukoniene, Eduardas Aleknaviciusa, Kestutis Suziedelisa
A significant body of knowledge about radiobiology is based on studies of single dose cellular irradiation, despite the fact that conventional clinical applications using dose fractionation. In addition, cellular radiation response strongly depends on cell-cell and cell-extracellular matrix (ECM) interactions, which are poorly established in cancer cells grown under standard 2D cell culture conditions. In this study, we investigated the response of human colorectal carcinoma (CRC) DLD1 and HT29 cell lines, bearing distinct p53 mutations, to a single 2 or 10 Gy dose or fractionated 5 × 2 Gy doses of radiation using global transcriptomics analysis...
July 7, 2017: Radiation Research
https://www.readbyqxmd.com/read/28684372/umbilical-cord-blood-transplantation-in-children-with-acute-leukemia-impact-of-conditioning-on-transplant-outcomes
#11
Mary Eapen, Joanne Kurtzberg, Mei-Jie Zhang, Gareth Hattersely, Mingwei Fei, Adam Mendizabal, Ka Wah Chan, Satiro De Oliveira, Kirk R Schultz, Donna Wall, Mary M Horowitz, John E Wagner
The Blood and Marrow Transplant Clinical Trials Network (BMT CTN 0501) randomized children with hematologic malignancy to one or two cord blood unit (UCB) transplantation between 2006 and 2012. While the trial concluded that survival was similar regardless of number of units infused, survival was better than previously reported. This prompted a comparison of survival of trial versus non-trial patients to determine the generalizability of trial results and whether survival was better because of the trial treatment regimen...
July 3, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28680278/current-practice-in-total-body-irradiation-results-of-a-canada-wide-survey
#12
R C N Studinski, D J Fraser, R S Samant, M S MacPherson
BACKGROUND: Total-body irradiation (tbi) is used to condition patients before bone marrow transplant. A variety of tbi treatment strategies have been described and implemented, but no consensus on best practice has been reached. We report on the results of a survey created to assess the current state of tbi delivery in Canada. RESULTS: A 19-question survey was distributed to 49 radiation oncology programs in Canada. Responses were received from 20 centres, including 12 centres that perform tbi...
June 2017: Current Oncology
https://www.readbyqxmd.com/read/28660653/cytomegalovirus-infection-in-hematologic-malignancy-settings-other-than-the-allogeneic-transplant
#13
REVIEW
F Marchesi, F Pimpinelli, F Ensoli, A Mengarelli
Cytomegalovirus (CMV) infection in clinical settings other than the allogeneic transplant represents a poorly explored issue. Thus, we performed a comprehensive review of the medical literature about CMV infection in patients undergoing autologous hematopoietic stem cell transplant and in other nontransplant-related hematologic patients. In autologous hematopoietic stem cell transplant, a CMV reactivation is reported to occur in up to 41% of CMV seropositive patients, when a prospective monitoring of antigenemia and/or viremia by polymerase chain reaction was adopted...
June 29, 2017: Hematological Oncology
https://www.readbyqxmd.com/read/28652564/risk-factors-for-graft-versus-host-disease-after-transplantation-of-hematopoietic-stem-cells-from-unrelated-donors-in-the-china-marrow-donor-program
#14
Fan Yang, Daopei Lu, Yu Hu, Xiaojun Huang, He Huang, Jing Chen, Depei Wu, Jianmin Wang, Chun Wang, Mingzhe Han, Hu Chen
BACKGROUND We identified risk factors for acute and chronic graft-versus-host disease (aGVHD and cGVHD, respectively) in recipients after hematopoietic stem cell transplantation (HSCT) from unrelated donors in the China Marrow Donor Program (CMDP). MATERIAL AND METHODS We analyzed follow-up clinical information from 1824 patients who underwent HSCT between 2001 and 2010. RESULTS The incidence of aGVHD and cGVHD after transplantation was 49.29% and 27.3%, respectively. aGVHD incidence decreased as HLA matching increased (p<0...
June 27, 2017: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/28651415/-investigation-of-burn-rehabilitation-development-of-china-in-2014
#15
M Ao, J Wu, J Chen
Objective: To further study the development of burn rehabilitation in China, so as to promote the development of burn rehabilitation in China. Methods: The questionnaire about the development of burn rehabilitation treatment was started by Specialized Committee of Burn Treatment and Rehabilitation Science of Chinese Association of Rehabilitation Medicine (hereinafter referred to as Specialized Committee) in the end of 2014, and 65 affiliations of Specialized Committee members participated in. There was a total of 26 questions, mainly focusing on problems as below: (1) General information of the burn department of the units, including the number of authorized beds, annual admitted burn patients, annual admitted patients with extremely severe burn, doctors, nurses, rehabilitation therapists, and the condition of rehabilitation area and rehabilitation beds, etc...
May 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28650775/urine-interleukin-18-il-18-as-a-biomarker-of-total-body-irradiation-a-preliminary-study-in-nonhuman-primates
#16
Mang Xiao, David L Bolduc, XiangHong Li, Wanchang Cui, Kevin P Hieber, Rolf Bünger, Natalia I Ossetrova
We have reported that circulating IL-18 can be used as a radiation biomarker in mice, minipigs and nonhuman primates (NHPs, Macaca mulatta). Here, we report the levels of IL-18 in individual NHP's urine before and at 6 h-7 days after 5.0, 6.5 and 8.5 Gy (60)Co total-body irradiation (TBI) using enzyme linked immunosorbent assay (ELISA). Six animals (3.5-5.5 kg, 3-4 years old) per radiation dose were investigated. Correlation values between urine IL-18 and blood cell counts and serum chemistry parameters including lactate dehydrogenase (LDH), lipase, and serum total protein (TP), as well as between urine IL-18 and 60-day survival, were analyzed...
June 26, 2017: Radiation Research
https://www.readbyqxmd.com/read/28632432/serum-micrornas-as-early-indicators-for-estimation-of-exposure-degree-in-response-to-ionizing-irradiation
#17
Wenjun Wei, Jinpeng He, Jufang Wang, Nan Ding, Bing Wang, Sulan Lin, Xurui Zhang, Junrui Hua, He Li, Burong Hu
Exposure to ionizing radiation from nuclear devices, spaceflights or terrorist attacks represents a major threat to human health and public security. After a radiological incident, noninvasive biomarkers that can facilitate rapid assessment of exposure risk in the early stages are urgently needed for optimal medical treatment. Serum microRNAs (miRNAs) are ideal biomarkers because they are stable in response to environmental changes, they are common among different species and are easily collected. Here, we performed miRNA PCR arrays to analyze miRNA expression profiles at 24 h postirradiation...
June 20, 2017: Radiation Research
https://www.readbyqxmd.com/read/28626096/-analgesic-effect-of-buccal-acupuncture-on-acute-arthritis-in-rabbits-and-underlying-mechanisms
#18
Wangjun Jie, Xiaoli Fang, Ruisheng Pu, Chenghong Su, Yanju Zhang, Yongle Pu, Chenguang Yang
To observe the analgesic effect of acupuncture and to explore its central analgesic mechanism in rheumatoid arthritis rabbits.
 Methods: A total of 60 flap-eared white rabbits were randomly assigned into a normal control group (n=6), a model group (n=6), a body-acupuncture group (n=24), and a buccal acupuncture group (n=24). The later 2 groups were further randomly assigned into 0, 0.5, 1, and 2 h subgroups, with 6 cases in each group. The rheumatoid arthritis model was established by induction of egg-albumin...
May 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28614903/thiotepa-based-conditioning-versus-total-body-irradiation-as-myeloablative-conditioning-prior-to-allogeneic-stem-cell-transplantation-for-acute-lymphoblastic-leukemia-a-matched-pair-analysis-from-the-acute-leukemia-working-party-of-the-european-society-for
#19
Sandra Eder, Jonathan Canaani, Eric Beohou, Myriam Labopin, Miguel A Sanz, William Arcese, Reuven Or, Juergen Finke, Agostino Cortelezzi, Dietrich Beelen, Jakob Passweg, Gerard Socié, Gunhan Gurman, Mahmoud Aljurf, Matthias Stelljes, Sebastian Giebel, Mohamad Mohty, Arnon Nagler
The optimal conditioning regimen to employ before hematopoieitic stem cell transplantation in acute lymphoblastic leukemia (ALL) is still undecided, and while Cy/TBI is the most commonly used myeloablative regimen, there are concerns regarding long term toxicity for patients conditioned with this regimen. Thiotepa based conditioning is an emerging radiation free regimen with recent publications indicative of comparable clinical outcomes to TBI based conditioning. In this analysis of the acute leukemia working party of the EBMT, we performed a retrospective matched-pair analysis, evaluating the outcome of adult patients with ALL who received thiotepa-based conditioning (n=180) with those receiving Cy/TBI conditioning (n=540)...
June 14, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28598293/stereotactic-body-radiotherapy-for-de-novo-spinal-metastases-systematic-review
#20
Zain A Husain, Arjun Sahgal, Antonio De Salles, Melissa Funaro, Janis Glover, Motohiro Hayashi, Masahiro Hiraoka, Marc Levivier, Lijun Ma, Roberto Martínez-Alvarez, J Ian Paddick, Jean Régis, Ben J Slotman, Samuel Ryu
OBJECTIVE The aim of this systematic review was to provide an objective summary of the published literature pertaining to the use of stereotactic body radiation therapy (SBRT) specific to previously untreated spinal metastases. METHODS The authors performed a systematic review, using Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, of the literature found in a search of Medline, PubMed, Embase, and the Cochrane Library up to March 2015. The search strategy was limited to publications in the English language...
June 9, 2017: Journal of Neurosurgery. Spine
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