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Total body irradiation

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https://www.readbyqxmd.com/read/29330393/haploidentical-bone-marrow-transplantation-with-post-transplant-cyclophosphamide-for-patients-with-x-linked-adrenoleukodystrophy-a-suitable-choice-in-an-urgent-situation
#1
Juliana Folloni Fernandes, Carmem Bonfim, Fábio Rodrigues Kerbauy, Morgani Rodrigues, Iracema Esteves, Nathalia Halley Silva, Alessandra Prandini Azambuja, Luiz Fernando Mantovani, José Mauro Kutner, Gisele Loth, Cilmara Cristina Kuwahara, Clarissa Bueno, Andrea Tiemi Kondo, Andreza Alice Feitosa Ribeiro, Fernando Kok, Nelson Hamerschlak
Allogeneic hematopoietic stem cell transplantation (HSCT) is the only treatment that enhances survival and stabilizes neurologic symptoms in X-linked adrenoleukodystrophy (X-ALD) with cerebral involvement, a severe demyelinating disease of childhood. Patients with X-ALD who lack a well-matched HLA donor need a rapid alternative. Haploidentical HSCT using post transplant cyclophosphamide (PT/Cy) has been performed in patients with malignant and nonmalignant diseases showing similar outcomes compared to other alternative sources...
January 12, 2018: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/29330392/haploidentical-hematopoietic-sct-using-helical-tomotherapy-for-total-body-irradiation-and-targeted-dose-boost-in-patients-with-high-risk-refractory-acute-lymphoblastic-leukemia
#2
Zujun Jiang, Junsong Jia, Chunyan Yue, Yan Pang, Zenghui Liu, Ling Ouyang, Hongbo Li, Jinjian Zhang, Ting Wen, Jing Li, Zhiqiang Li, Yan Wang, Yang Xiao, Haowen Xiao
A novel conditioning regimen using helical tomotherapy (HT) was developed to deliver 10 Gy for total body irradiation (TBI) and simultaneously augment dose to 12 Gy for targeted dose boost to total marrow, central nervous system leukemia, and extramedullary disease sites in patients with high-risk or relapsed/refractory acute lymphoblastic leukemia (ALL) receiving haploidentical allogeneic hematopoietic stem cell transplantation (allo-HSCT). Fourteen patients were included, eight of these patients were in first complete remission (CR1), one was in CR2, one had a partial response and four patients had refractory disease at transplantation...
January 12, 2018: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/29325132/dark-tea-extract-mitigates-hematopoietic-radiation-injury-with-antioxidative-activity
#3
Wei Long, Guanghui Zhang, Yinping Dong, Deguan Li
The hematopoietic system is widely studied in radiation research. Tea has been proved to have antioxidative activity. In the present study, we describe the protective effects of dark tea extract (DTE) on radiation-induced hematopoietic injury. DTE administration significantly enhanced the survival rate of mice after 7.0 and 7.5 Gy total body irradiation (TBI). The results showed that DTE not only markedly increased the numbers and cloning potential of hematopoietic cells, but also decreased DNA damages after mice were exposed to 6...
January 9, 2018: Journal of Radiation Research
https://www.readbyqxmd.com/read/29323552/using-the-american-college-of-radiology-dose-index-registry-to-evaluate-practice-patterns-and-radiation-dose-estimates-of-pediatric-body-ct
#4
Benjamin Wildman-Tobriner, Keith J Strauss, Mythreyi Bhargavan-Chatfield, Nadja Kadom, Peter Vock, Kimberly E Applegate, Donald P Frush
OBJECTIVE: Imaging registries afford opportunities to study large, heterogeneous populations. The purpose of this study was to examine the American College of Radiology CT Dose Index Registry (DIR) for dose-related demographics and metrics of common pediatric body CT examinations. MATERIALS AND METHODS: Single-phase CT examinations of the abdomen and pelvis and chest submitted to the DIR over a 5-year period (July 2011-June 2016) were evaluated (head CT frequency was also collected)...
January 11, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29309836/ocular-complications-in-a-young-pediatric-population-following-bone-marrow-transplantation
#5
Mary Ellen Hoehn, Julie Calderwood, Edwin Gannon, Brittany Cook, Richard Rochester, Christine Hartford, Brandon Triplett, Anusha Sunkara, Guolian Kang, R Christopher Walton
PURPOSE: To investigate ocular complications associated with bone marrow transplant and associated continued maintenance therapy in a preschool population. METHODS: The medical records of patients <7 years of age were reviewed retrospectively. Patient charts were screened for cataract formation, dry eye, and other anterior and posterior segment disease. RESULTS: Of 270 cases reviewed, 91 met inclusion criteria. Mean age at diagnosis was 3...
January 5, 2018: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/29309266/radiation-induced-long-noncoding-rnas-in-a-mouse-model-after-whole-body-irradiation
#6
Molykutty J Aryankalayil, Sunita Chopra, Joel Levin, Iris Eke, Adeola Makinde, Shaoli Das, Uma Shankavaram, Claire Vanpouille-Box, Sandra Demaria, C Norman Coleman
Long noncoding RNAs (lncRNAs) are emerging as key molecules in regulating many biological processes and have been implicated in development and disease pathogenesis. Biomarkers of cancer and normal tissue response to treatment are of great interest in precision medicine, as well as in public health and medical management, such as for assessment of radiation injury after an accidental or intentional exposure. Circulating and functional RNAs, including microRNAs (miRNAs) and lncRNAs, in whole blood and other body fluids are potential valuable candidates as biomarkers...
January 8, 2018: Radiation Research
https://www.readbyqxmd.com/read/29309056/suppression-of-luteinizing-hormone-enhances-hsc-recovery-after-hematopoietic-injury
#7
Enrico Velardi, Jennifer J Tsai, Stefan Radtke, Kirsten Cooper, Kimon V Argyropoulos, Shieh Jae-Hung, Lauren F Young, Amina Lazrak, Odette M Smith, Sophie Lieberman, Fabiana Kreines, Yusuke Shono, Tobias Wertheimer, Robert R Jenq, Alan M Hanash, Prema Narayan, Zhenmin Lei, Malcolm A Moore, Hans-Peter Kiem, Marcel R M van den Brink, Jarrod A Dudakov
There is a substantial unmet clinical need for new strategies to protect the hematopoietic stem cell (HSC) pool and regenerate hematopoiesis after radiation injury from either cancer therapy or accidental exposure. Increasing evidence suggests that sex hormones, beyond their role in promoting sexual dimorphism, regulate HSC self-renewal, differentiation, and proliferation. We and others have previously reported that sex-steroid ablation promotes bone marrow (BM) lymphopoiesis and HSC recovery in aged and immunodepleted mice...
January 8, 2018: Nature Medicine
https://www.readbyqxmd.com/read/29298238/desensitization-and-prevention-of-antibody-mediated-rejection-in-vascularized-composite-allotransplantation-by-syngeneic-hematopoietic-stem-cell-transplantation
#8
Howard D Wang, Samuel A J Fidder, Devin T Miller, Georg J Furtmüller, Ali Reza Ahmadi, Felix Nägele, Joseph Lopez, Amy Quan, Joshua Budihardjo, Denver M Lough, Burcu Akpinarli, Joanna Etra, Dalibor Vasilic, Giorgio Raimondi, W P Andrew Lee, Robert A Montgomery, Zhaoli Sun, Gerald Brandacher
BACKGROUND: Candidates for vascularized composite allotransplantation (VCA) are frequently sensitized, putting them at risk for antibody-mediated rejection (AMR). Current desensitization strategies are imperfect and require a living-donor setting. Here we investigated the impact of sensitization on and the efficacy of a desensitization protocol utilizing syngeneic hematopoietic stem cell transplantation (HSCT) to prevent AMR in VCA. METHODS: Skin transplants from Dark Agouti (DA) to Lewis rats were performed for sensitization...
January 2, 2018: Transplantation
https://www.readbyqxmd.com/read/29296873/tandem-autologous-allogeneic-hematopoietic-cell-transplantation-with-bortezomib-maintenance-therapy-for-high-risk-myeloma
#9
Damian J Green, David G Maloney, Barry E Storer, Brenda M Sandmaier, Leona A Holmberg, Pamela S Becker, Min Fang, Paul J Martin, George E Georges, Michelle E Bouvier, Rainer Storb, Marco Mielcarek
We evaluated tandem autologous/allogeneic hematopoietic cell transplantation followed by bortezomib maintenance therapy in a prospective phase 2 trial of treatment of high-risk multiple myeloma. The high-dose conditioning regimen for autologous hematopoietic cell transplantation consisted of melphalan 200 mg/m2. The nonmyeloablative conditioning regimen for the allogeneic transplant involved low-dose total body irradiation (2 Gy) with or without fludarabine (30 mg/m2 × 3 days). Among the 31 patients enrolled, 26 (84%) proceeded to HLA-matched allogeneic hematopoietic cell transplantation at a median of 61 (range, 41-168) days following the autologous transplant...
November 14, 2017: Blood Advances
https://www.readbyqxmd.com/read/29296864/immune-tolerance-induction-by-nonmyeloablative-haploidentical-hsct-combining-t-cell-depletion-and-posttransplant-cyclophosphamide
#10
Franco Aversa, Esther Bachar-Lustig, Noga Or-Geva, Lucia Prezioso, Sabrina Bonomini, Ilenia Manfra, Alessandro Monti, Chiara Schifano, Yael Zlotnikov-Klionsky, Massimo F Martelli, Gabriella Sammarelli, Maria Sassi, Maurizio Soli, Silvia Giuliodori, Magda Benecchi, Nicola Giuliani, Frank Lohr, Silvia Pratissoli, Yair Reisner
The establishment of safe approaches to attain durable donor-type chimerism and immune tolerance toward donor antigens represents a major challenge in transplantation biology. Haploidentical hematopoietic stem cell transplantation (HSCT) is currently used for cancer therapy either as a T-cell-depleted megadose HSCT following myeloablative conditioning or with T-cell-replete HSCT following nonmyeloablative conditioning (NMAC) and high-dose posttransplant cyclophosphamide (PTCY). The latter approach suffers from a significant rate of chronic graft-versus-host disease (GVHD), despite prolonged immunosuppression...
November 14, 2017: Blood Advances
https://www.readbyqxmd.com/read/29296707/cyclophosphamide-improves-engraftment-in-patients-with-scd-and-severe-organ-damage-who-undergo-haploidentical-pbsct
#11
Courtney D Fitzhugh, Matthew M Hsieh, Tiffani Taylor, Wynona Coles, Katherine Roskom, Delon Wilson, Elizabeth Wright, Neal Jeffries, Christopher J Gamper, Jonathan Powell, Leo Luznik, John F Tisdale
Peripheral blood stem cell transplantation (PBSCT) offers a curative option for sickle cell disease (SCD). Although HLA-matched sibling transplantation is promising, the vast majority of patients lack such a donor. We sought to develop a novel nonmyeloablative HLA-haploidentical PBSCT approach that could safely be used for patients with severe organ damage. Based on findings in our preclinical model, we developed a phase 1/2 trial using alemtuzumab, 400 cGy total body irradiation, and escalating doses of posttransplant cyclophosphamide (PT-Cy): 0 mg/kg in cohort 1, 50 mg/kg in cohort 2, and 100 mg/kg in cohort 3...
April 25, 2017: Blood Advances
https://www.readbyqxmd.com/read/29289481/analysis-of-real-world-data-on-postremission-therapy-for-acute-myeloid-leukemia-with-intermediate-risk-cytogenetics-in-first-complete-remission
#12
Jan Vydra, Cyril Šálek, Jiří Schwarz, Pavel Žák, Jan Novák, Veronika Petečuková, Pavla Pecherková, Jiří Mayer, Petr Cetkovský, Zdeněk Ráčil
BACKGROUND: We retrospectively analyzed data from 310 patients with acute myeloid leukemia with intermediate-risk cytogenetics in first complete remission (CR1) to evaluate the usage and efficacy of various types of postremission therapy. PATIENTS AND METHODS: Cox regression with time-dependent covariates, landmark analysis, and competing risk models were used to estimate the outcomes and effects of treatment and patient- and disease-related risk factors. RESULTS: The early relapse rate and early nonrelapse mortality (NRM) were 12...
December 7, 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/29286549/musculoskeletal-complications-following-total-body-irradiation-in-hematopoietic-stem-cell-transplant-patients
#13
REVIEW
Taylor J Jackson, Sogol Mostoufi-Moab, Christine Hill-Kayser, Naomi J Balamuth, Alexandre Arkader
Total body irradiation (TBI) is commonly used in conditioning regimens for allogeneic hematopoietic stem cell transplantation (HSCT) to treat benign and malignant disease. Though life-saving, these therapies place patients at risk for important side effects, including musculoskeletal complications such as short stature, osteonecrosis, slipped capital femoral epiphysis, and the development of benign and malignant bone tumors. With an increasing number of HSCT survivors, there is a growing need for awareness of the musculoskeletal complications of HSCT and TBI...
December 29, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/29286505/peculiarities-of-ultrastructural-organization-and-metabolism-of-reactive-forms-of-oxygen-and-nitrogen-in-a-cardiovascular-system-for-permanent-effects-of-ionizing-radiation-in-low-doses
#14
I V Horot, M M Tkachenko
OBJECTIVE: Determination of the peculiarities of ultrastructural changes and metabolism of reactive forms of oxy gen and nitrogen in the tissues of the myocardium, aorta and portal vein of the radiosensitive BALB/c mice due long term exposure to the complex of radionuclides of Chоrnobyl fallout (ejection) and low intensity low dose γ irradiation. MATERIALS AND METHODS: Experimental studies were performed on 60 mice female radiosensitive lines BALB/c with a body weight of 20-22 g, which were divided into 3 groups: I group (control) animals age 6-9 months which were born and lived their lives in Kyiv vivarium under conditions natural radioactive background; ІІ - animals age 6 months, which were born and lived in the Chornobyl exclusion zone throughout their lives; ІІІ - animals, which from 3 months of age for 6 months were constantly located in cages with flat ionizing radiation sources and exposed to external γ irradiation in a total dose of 0...
December 2017: Problemy Radiat︠s︡iĭnoï Medyt︠s︡yny Ta Radiobiolohiï
https://www.readbyqxmd.com/read/29285056/effects-of-yak-activated-protein-on-hematopoiesis-and-related-cytokines-in-radiation-induced-injury-in-mice
#15
Yabin Duan, Xingchen Yao, Junbo Zhu, Yongping Li, Juanling Zhang, Xuejiao Zhou, Yijie Qiao, Meng Yang, Xiangyang Li
The aim of the present study was to investigate the protective effects of yak-activated protein on hematopoiesis and cytokine function in radiation-induced injury in mice. A total of 180 Kunming mice were randomly divided into three groups (A, B and C). Of these, 60 were randomly divided into a normal control group, a radiation model group, a positive control group and 3 yak-activated protein groups (high, medium and low dose groups; 10, 5 and 2.5 mg/kg, respectively). The other 120 mice were used for the subsequent experiments on days 7 and 14 following radiation...
December 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29274396/transplant-conditioning-with-treosulfan-fludarabine-with-or-without-tbi-a-randomized-phase-ii-trial-in-patients-with-mds-and-aml
#16
H Joachim Deeg, Emily A Stevens, Rachel B Salit, Ralph P Ermoian, Min Fang, Boglarka Gyurkocza, Mohamed L Sorror, Giancarlo Fatobene, Joachim Baumgart, Lauri M Burroughs, Colleen Delaney, Kris Doney, Daniel N Egan, Mary E D Flowers, Filippo Milano, Jerry P Radich, Bart L Scott, Eileen J Sickle, Brent L Wood, Cecilia Yeung, Barry E Storer
In this prospective randomized phase II "pick the winner" trial we assessed the efficacy of transplant conditioning with treosulfan/fludarabine ± 2 Gy total body irradiation (TBI) in reducing post-transplant relapse in 100 patients, 2-70 (median 57) years of age, with myelodysplastic syndrome/chronic myelomonocytic leukemia (MDS/CMML; n=51) or acute myeloid leukemia (AML; n=49). Patients received intravenous (IV) treosulfan, 14 g/m2/day on days -6 to -4 and IV fludarabine, 30 mg/m2/day on days -6 to -2, alone or combined with 2 Gy TBI (day 0)...
December 20, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29258542/radiotherapy-of-mri-detected-involved-internal-mammary-lymph-nodes-in-breast-cancer
#17
Sean Sachdev, Chelain R Goodman, Erin Neuschler, Kapila Kalakota, Daniel Cutright, Eric D Donnelly, John P Hayes, Adam E Prescott, Gianna Mirabelli, Jonathan B Strauss
BACKGROUND: The internal mammary (IM) lymph node chain, along with the axillary nodal basin, is a first-echelon breast lymphatic draining site. A growing body of evidence supports irradiation of this region in node-positive breast cancer. This study evaluated the effectiveness of radiotherapy in treating magnetic resonance imaging (MRI)-detected abnormal IM lymph nodes in newly-diagnosed non-metastatic breast cancer. METHODS: A structured query was performed on an electronic institutional database to identify women with radiographic evidence of abnormal IM node(s) on breast MRI from 2005 to 2013...
December 19, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/29251550/mri-study-on-the-changes-of-bone-marrow-microvascular-permeability-and-fat-content-after-total-body-x-ray-irradiation
#18
Kejun Wang, Yunfei Zha, Hao Lei, Xiao Xu
In this study, we investigated microvascular perfusion status, changes to fat content and fatty acid composition in the bone marrow of rat femurs after total-body irradiation by quantitative permeability parameters of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) and ex vivo high-resolution magic angle spinning (HRMAS) 1H nuclear magnetic resonance spectroscopy (NMRS). Thirty-six Sprague-Dawley rats were randomly assigned to either an irradiated or nonirradiated control group. Permeability imaging using DCE-MRI and HRMAS 1H NMRS was performed before irradiation, as well as at days 4 and 7 postirradiation...
December 18, 2017: Radiation Research
https://www.readbyqxmd.com/read/29251085/radioprotective-and-radiomitigative-effects-of-bp-c2-a-novel-lignin-derived-polyphenolic-composition-with-ammonium-molybdate-in-two-mouse-strains-exposed-to-total-body-irradiation
#19
Vladimir N Bykov, Igor S Drachev, Sergey Yu Kraev, Mikhail A Maydin, Ekaterina A Gubareva, Sergey E Pigarev, Vladimir N Anisimov, Irina A Baldueva, Elena I Fedoros, Andrey V Panchenko
PURPOSE: There remains an unmet medical need for radioprotective and mitigative agents. BP-C2 is a novel lignin-derived polyphenolic composition with ammonium molybdate, developed as radioprotector/radiomitigator. OBJECTIVES: The present study evaluated BP-C2 for mitigation of acute radiation syndrome (ARS). METHODS: A total-body irradiation mouse model (TBI, 4.0 - 8.0 Gy) was used in the study. RESULTS: In a 30-day survival study, performed in CBA mice, BP-C2, at a dosage of 81...
December 18, 2017: International Journal of Radiation Biology
https://www.readbyqxmd.com/read/29251020/podophyllotoxin-and-rutin-in-combination-prevents-oxidative-stress-mediated-cell-death-and-advances-revival-of-mice-gastrointestine-following-lethal-radiation-injury
#20
Ajaswrata Dutta, Manju Lata Gupta, Savita Verma
Intestinal injury is inevitable during exposure to high radiation doses and is a common side effect observed during abdominal/pelvic radiotherapy. Yet no radiation countermeasures are available for gastrointestine (GI) injury management. The aim of this study is to determine the effects of podophyllotoxin and rutin in combination (G-003M) on ionizing radiation induced GI injury. We prophylactically administered G-003M to C57BL/6J mice exposed to 9-Gy total body radiation (TBI) and assessed for morphological changes, loss in absorption, fluid retention, biochemical alterations, immunohistochemical analysis to study cPARP, caspase-3, PCNA expression and TUNEL staining...
December 17, 2017: Free Radical Research
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