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total marrow irradiation

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https://www.readbyqxmd.com/read/27931514/vascular-alterations-in-a-murine-model-of-acute-graft-versus-host-disease-are-associated-with-decreased-serum-levels-of-adiponectin-and-an-increased-activity-and-vascular-expression-of-indoleamine-2-3-dioxygenase
#1
Peter M Schmid, Abdellatif Bouazzaoui, Karin Schmid, Christoph M Birner, Christian Schach, Lars S Maier, Ernst Holler, Dierk H Endemann
Graft-versus-host disease (GVHD) is the limiting complication after bone marrow transplantation (BMT), and its pathophysiology seems to be highly influenced by vascular factors. Our study aimed at elucidating possible mechanisms involved in vascular GVHD. For this purpose, we used a fully MHC-mismatched model of BALB/c mice conditioned according to two different intensity protocols with total body irradiation and transplantation of allogeneic (C57BL/6) or syngeneic bone marrow cells and splenocytes. Mesenteric resistance arteries were studied in a pressurized myograph...
November 2016: Cell Transplantation
https://www.readbyqxmd.com/read/27918563/dickkopf-1-promotes-hematopoietic-regeneration-via-direct-and-niche-mediated-mechanisms
#2
Heather A Himburg, Phuong L Doan, Mamle Quarmyne, Xiao Yan, Joshua Sasine, Liman Zhao, Grace V Hancock, Jenny Kan, Katherine A Pohl, Evelyn Tran, Nelson J Chao, Jeffrey R Harris, John P Chute
The role of osteolineage cells in regulating hematopoietic stem cell (HSC) regeneration following myelosuppression is not well understood. Here we show that deletion of the pro-apoptotic genes Bak and Bax in osterix (Osx, also known as Sp7 transcription factor 7)-expressing cells in mice promotes HSC regeneration and hematopoietic radioprotection following total body irradiation. These mice showed increased bone marrow (BM) levels of the protein dickkopf-1 (Dkk1), which was produced in Osx-expressing BM cells...
December 5, 2016: Nature Medicine
https://www.readbyqxmd.com/read/27915436/bone-marrow-produces-sufficient-alloreactive-natural-killer-nk-cells-in-vivo-to-cure-mice-from-subcutaneously-and-intravascularly-injected-4t1-breast-cancer
#3
Michel van Gelder, Ariane Vanclée, Catharina H M J van Elssen, Pierre Hupperets, Lotte Wieten, Gerard M Bos
PURPOSE: Administration of 5 million alloreactive natural killer (NK) cells after low-dose chemo-irradiation cured mice of 4T1 breast cancer, supposedly dose dependent. We now explored the efficacy of bone marrow as alternative in vivo source of NK cells for anti-breast cancer treatment, as methods for in vitro clinical scale NK cell expansion are still in developmental phases. METHODS: Progression-free survival (PFS) after treatment with different doses of spleen-derived alloreactive NK cells to 4T1-bearing Balb/c mice was measured to determine a dose-response relation...
December 3, 2016: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/27898698/myeloid-dll4-does-not-contribute-to-the-pathogenesis-of-non-alcoholic-steatohepatitis-in-ldlr-mice
#4
Mike L J Jeurissen, Sofie M A Walenbergh, Tom Houben, Tim Hendrikx, Jieyi Li, Yvonne Oligschlaeger, Patrick J van Gorp, Marion J J Gijbels, Albert Bitorina, Isabell Nessel, Freddy Radtke, Marc Vooijs, Jan Theys, Ronit Shiri-Sverdlov
Non-alcoholic steatohepatitis (NASH) is characterized by liver steatosis and inflammation. Currently, the underlying mechanisms leading to hepatic inflammation are not fully understood and consequently, therapeutic options are poor. Non-alcoholic steatohepatitis (NASH) and atherosclerosis share the same etiology whereby macrophages play a key role in disease progression. Macrophage function can be modulated via activation of receptor-ligand binding of Notch signaling. Relevantly, global inhibition of Notch ligand Delta-Like Ligand-4 (DLL4) attenuates atherosclerosis by altering the macrophage-mediated inflammatory response...
2016: PloS One
https://www.readbyqxmd.com/read/27897136/an-image-based-skeletal-dosimetry-model-for-the-icrp-reference-adult-female-internal-electron-sources
#5
Shannon E O'Reilly, Lindsay S DeWeese, Matthew R Maynard, Didier A Rajon, Michael B Wayson, Emily L Marshall, Wesley E Bolch
An image-based skeletal dosimetry model for internal electron sources was created for the ICRP-defined reference adult female. Many previous skeletal dosimetry models, which are still employed in commonly used internal dosimetry software, do not properly account for electron escape from trabecular spongiosa, electron cross-fire from cortical bone, and the impact of marrow cellularity on active marrow self-irradiation. Furthermore, these existing models do not employ the current ICRP definition of a 50 µm bone endosteum (or shallow marrow)...
December 21, 2016: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/27888014/nonmyeloablative-haploidentical-bone-marrow-transplantation-with-post-transplant-cyclophosphamide-for-pediatric-and-young-adult-patients-with-high-risk-hematologic-malignancies
#6
Orly R Klein, Jessica Buddenbaum, Noah Tucker, Allen R Chen, Christopher J Gamper, David Loeb, Elias Zambidis, Nicolas J Llosa, Jeffrey S Huo, Nancy Robey, Mary Jo Holuba, Yvette L Kasamon, Shannon R McCurdy, Richard Ambinder, Javier Bolaños-Meade, Leo Luznik, Ephraim J Fuchs, Richard J Jones, Kenneth R Cooke, Heather J Symons
Lower intensity conditioning regimens for haploidentical blood or marrow transplantation (BMT) are safe and efficacious for adult patients with hematologic malignancies. We report data for pediatric/young adult patients with high-risk hematologic malignancies (n=40) treated with nonmyeloablative haploidentical BMT with post-transplantation cyclophosphamide (PT/Cy) from 2003-2015. Patients received a preparative regimen of fludarabine, cyclophosphamide, and total body irradiation. Post-transplant immunosuppression consisted of cyclophosphamide, mycophenolate mofetil, and tacrolimus...
November 22, 2016: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/27880980/impact-of-total-body-irradiation-on-successful-neutrophil-engraftment-in-unrelated-bone-marrow-or-cord-blood-transplantation
#7
Hideki Nakasone, Fuji Shigeo, Kimikazu Yakushijin, Makoto Onizuka, Akihito Shinohara, Kazuteru Ohashi, Koichi Miyamura, Naoyuki Uchida, Minoko Takanashi, Tatsuo Ichinohe, Yoshiko Atsuta, Takahiro Fukuda, Masao Ogata
Total body irradiation (TBI) has been thought to promote donor cell engraftment in allogeneic hematopoietic cell transplantation (HCT) from alternative donors. However, recent progress in HCT strategies may affect the clinical significance of TBI on neutrophil engraftment. With the use of a Japanese transplant registry database, we analyzed 3933 adult recipients (>15 y.o.) who underwent HCT between 2006 and 2013 from an 8/8 HLA-matched unrelated bone marrow donor (MUD, n=1367), an HLA-mismatched unrelated bone marrow donor (MMUD, n=1102), or unrelated cord blood (CBT, n=1464)...
November 23, 2016: American Journal of Hematology
https://www.readbyqxmd.com/read/27872868/minor-antigen-disparities-impede-induction-of-long-lasting-chimerism-and-tolerance-through-bone-marrow-transplantation-with-costimulation-blockade
#8
Sinda Bigenzahn, Ines Pree, Christoph Klaus, Nina Pilat, Benedikt Mahr, Elisabeth Schwaiger, Patrick Nierlich, Friedrich Wrba, Thomas Wekerle
Mixed chimerism and tolerance can be successfully induced in rodents through allogeneic bone marrow transplantation (BMT) with costimulation blockade (CB), but varying success rates have been reported with distinct models and protocols. We therefore investigated the impact of minor antigen disparities on the induction of mixed chimerism and tolerance. C57BL/6 (H2(b)) mice received nonmyeloablative total body irradiation (3 Gy), costimulation blockade (anti-CD40L mAb and CTLA4Ig), and 2 × 10(7) bone marrow cells (BMC) from either of three donor strains: Balb/c (H2(d)) (MHC plus multiple minor histocompatibility antigen (mHAg) mismatched), B10...
2016: Journal of Immunology Research
https://www.readbyqxmd.com/read/27864506/mitigation-of-whole-body-gamma-radiation-induced-damages-by-clerodendron-infortunatum-in-mammalian-organisms
#9
Tiju Chacko, Aditya Menon, Teeju Majeed, Sivaprabha V Nair, Nithu Sara John, Cherupally Krishnan Krishnan Nair
Several phytoceuticals and extracts of medicinal plants are reported to mitigate deleterious effects of ionizing radiation. The potential of hydro-alcoholic extract of Clerodendron infortunatum (CIE) for providing protection to mice exposed to gamma radiation was investigated. Oral administration of CIE bestowed a survival advantage to mice exposed to lethal doses of gamma radiation. Radiation-induced depletion of the total blood count and bone marrow cellularity were prevented by treatment with CIE. Damage to the cellular DNA (as was evident from the comet assay and the micronucleus index) was also found to be decreased upon CIE administration...
November 17, 2016: Journal of Radiation Research
https://www.readbyqxmd.com/read/27861294/induction-of-major-histocompatibility-complex-mismatched-mouse-lung-allograft-acceptance-with-combined-donor-bone-marrow-lung-transplant-using-a-12-hour-nonmyeloablative-conditioning-regimen
#10
Jeffrey M Dodd-O, Sudipto Ganguly, Ante Vulic, Angela Panoskaltsis-Mortari, John F McDyer, Leo Luznik
BACKGROUND: Despite broad and intense conventional immunosuppression, long-term survival after lung transplantation lags behind that for other solid organ transplants, primarily because of allograft rejection. Therefore, new strategies to promote lung allograft acceptance are urgently needed. The purpose of the present study was to induce allograft tolerance with a protocol compatible with deceased donor organ utilization. METHODS: Using the major histocompatibility complex-mismatched mouse orthotopic lung transplant model, we investigated a conditioning regimen consisting of pretransplant T cell depletion, low-dose total body irradiation and posttransplant (donor) bone marrow, and splenocyte infusion followed by posttransplantation cyclophosphamide...
December 2016: Transplantation
https://www.readbyqxmd.com/read/27861292/long-term-tolerance-toward-haploidentical-vascularized-composite-allograft-transplantation-in-a-canine-model-using-bone-marrow-or-mobilized-stem-cells
#11
Jeff Chang, Scott S Graves, Tiffany Butts-Miwongtum, George E Sale, Rainer Storb, David Woodbridge Mathes
BACKGROUND: The development of safe and reliable protocols for the transplantation of the face and hands may be accomplished with animal modeling of transplantation of vascularized composite allografts (VCA). Previously, we demonstrated that tolerance to a VCA could be achieved after canine recipients were simultaneously given marrow from a dog leukocyte antigen-identical donor. In the present study, we extend those findings across a dog leukocyte antigen mismatched barrier. METHODS: Eight recipient dogs received total body irradiation (4...
December 2016: Transplantation
https://www.readbyqxmd.com/read/27856466/thomas-ed-buckner-cd-banaji-m-et-al-one-hundred-patients-with-acute-leukemia-treated-by-chemotherapy-total-body-irradiation-and-allogeneic-marrow-transplantation-blood-1977-49-4-511-533
#12
https://www.readbyqxmd.com/read/27849061/mitigation-of-radiation-induced-hematopoietic-injury-by-the-polyphenolic-acetate-7-8-diacetoxy-4-methylthiocoumarin-in-mice
#13
Kavya Venkateswaran, Anju Shrivastava, Paban K Agrawala, Ashok Prasad, Namita Kalra, Parvat R Pandey, Kailash Manda, Hanumantharao G Raj, Virinder S Parmar, Bilikere S Dwarakanath
Protection of the hematopoietic system from radiation damage, and/or mitigation of hematopoietic injury are the two major strategies for developing medical countermeasure agents (MCM) to combat radiation-induced lethality. In the present study, we investigated the potential of 7, 8-diacetoxy-4-methylthiocoumarin (DAMTC) to ameliorate radiation-induced hematopoietic damage and the associated mortality following total body irradiation (TBI) in C57BL/6 mice. Administration of DAMTC 24 hours post TBI alleviated TBI-induced myelo-suppression and pancytopenia, by augmenting lymphocytes and WBCs in the peripheral blood of mice, while bone marrow (BM) cellularity was restored through enhanced proliferation of the stem cells...
November 16, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27846608/the-dna-sensing-aim2-inflammasome-controls-radiation-induced-cell-death-and-tissue-injury
#14
Bo Hu, Chengcheng Jin, Hua-Bing Li, Jiyu Tong, Xinshou Ouyang, Naniye Malli Cetinbas, Shu Zhu, Till Strowig, Fred C Lam, Chen Zhao, Jorge Henao-Mejia, Omer Yilmaz, Katherine A Fitzgerald, Stephanie C Eisenbarth, Eran Elinav, Richard A Flavell
Acute exposure to ionizing radiation induces massive cell death and severe damage to tissues containing actively proliferating cells, including bone marrow and the gastrointestinal tract. However, the cellular and molecular mechanisms underlying this pathology remain controversial. Here, we show that mice deficient in the double-stranded DNA sensor AIM2 are protected from both subtotal body irradiation-induced gastrointestinal syndrome and total body irradiation-induced hematopoietic failure. AIM2 mediates the caspase-1-dependent death of intestinal epithelial cells and bone marrow cells in response to double-strand DNA breaks caused by ionizing radiation and chemotherapeutic agents...
November 11, 2016: Science
https://www.readbyqxmd.com/read/27832981/haploidentical-bone-marrow-transplantation-with-post-transplant-cyclophosphamide-for-children-and-adolescents-with-fanconi-anemia
#15
Carmem Bonfim, Lisandro Ribeiro, Samantha Nichele, Gisele Loth, Marco Bitencourt, Adriana Koliski, Cilmara Kuwahara, Ana Luiza Fabro, Noemi F Pereira, Daniela Pilonetto, Monica Thakar, Hans-Peter Kiem, Kristin Page, Ephraim J Fuchs, Mary Eapen, Ricardo Pasquini
We describe haploidentical bone marrow transplantation with post-transplant cyclophosphamide (PT-CY) for 30 patients with Fanconi anemia (FA). Twenty-six patients were transplanted upfront, and the preparatory regimens included fludarabine 150 mg/m(2) + total body irradiation 200 to 300 cGy ± CY 10 mg/kg without (n = 12) or with rabbit antithymocyte globulin (r-ATG) 4 to 5 mg/kg (n = 14). Four patients were rescued after primary or secondary graft failure after related or unrelated donor transplantation with the above regimen with (n = 2) or without r-ATG (n = 2)...
November 7, 2016: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/27830541/achievement-of-disease-control-with-donor-derived-eb-virus-specific-cytotoxic-t-cells-after-allogeneic-peripheral-blood-stem-cell-transplantation-for-aggressive-nk-cell-leukemia
#16
Shojiro Haji, Motoaki Shiratsuchi, Takamitsu Matsushima, Akiko Takamatsu, Mariko Tsuda, Yasuhiro Tsukamoto, Emi Tanaka, Hirofumi Ohno, Eriko Fujioka, Yuriko Ishikawa, Ken-Ichi Imadome, Yoshihiro Ogawa
Aggressive NK-cell leukemia (ANKL) is characterized by systemic infiltration of Epstein-Barr virus (EBV)-associated natural killer cells and poor prognosis. We report a case of ANKL in which EBV-specific cytotoxic T lymphocytes (CTLs) were induced. A 41-year-old male suffered from fever, pancytopenia, and hepatosplenomegaly. The number of abnormal large granular lymphocytes in the bone marrow was increased and the cells were positive for CD56 and EBV-encoded small nuclear RNAs. The patient was diagnosed with ANKL and achieved a complete response following intensive chemotherapy...
November 9, 2016: International Journal of Hematology
https://www.readbyqxmd.com/read/27788825/identification-of-suitable-reference-genes-for-mrna-studies-in-bone-marrow-in-a-mouse-model-of-hematopoietic-stem-cell-transplantation
#17
H Li, C Chen, H Yao, X Li, N Yang, J Qiao, K Xu, L Zeng
BACKGROUND: Bone marrow micro-environment changes during hematopoietic stem cell transplantation (HSCT) with subsequent alteration of genes expression. Quantitative polymerase chain reaction (q-PCR) is a reliable and reproducible technique for the analysis of gene expression. To obtain more accurate results, it is essential to find a reference during HSCT. However, which gene is suitable during HSCT remains unclear. This study aimed to identify suitable reference genes for mRNA studies in bone marrow after HSCT...
October 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27710703/total-body-irradiation-exacerbates-dissemination-of-cutaneous-candida-albicans-infection
#18
Margaret L Barlow, Ryan J Cummings, Alice P Pentland, Tanzy M T Love, Constantine G Haidaris, Julie L Ryan, Edith M Lord, Scott A Gerber
Exposure to radiation, particularly a large or total-body dose, weakens the immune system through loss of bone marrow precursor cells, as well as diminished populations of circulating and tissue-resident immune cells. One such population is the skin-resident immune cells. Changes in the skin environment can be of particular importance as the skin is also host to a number of commensal organisms, including Candida albicans , a species of fungus that causes opportunistic infections in immunocompromised patients...
October 6, 2016: Radiation Research
https://www.readbyqxmd.com/read/27704349/effect-of-preliminary-injection-of-bone-marrow-cell-total-rna-on-erythropoiesis-recovery-dynamics-in-rats-exposed-to-an-acute-%C3%AE-irradiation
#19
N M Gevorkyan, N V Tishevskaya, A A Bolotov
Total RNA from the bone marrow of healthy donor rats was injected to experimental rats 6 h, 2 h, or 30 min prior to a single γ-irradiation in the sublethal dose of 6 Gy. Injection total RNA 30 min prior to the exposure most effectively restored erythropoiesis in experimental animals. In 5 days, reticulocyte count in these animals 30-fold surpassed the control (injection of 0.9% NaCl). In 12 days, the content of new erythroblastic islands in the bone marrow in rats injected with the total RNA 2 h or 30 min prior to irradiation increased significantly and erythropoiesis recovery activation was observed...
September 2016: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/27690716/development-of-a-combined-radiation-and-full-thickness-burn-injury-minipig-model-to-study-the-effects-of-uncultured-adipose-derived-regenerative-cell-therapy-in-wound-healing
#20
Philippe Foubert, Melanie Doyle-Eisele, Andreina Gonzalez, Felipe Berard, Waylon Weber, Diana Zafra, Zeni Alfonso, Sherry Zhao, Mayer Tenenhaus, John K Fraser
PURPOSE: The objective of this study was to develop an approach that models the cutaneous healing that occurs in a patient with full thickness thermal burn injury complicated by total body radiation exposure sufficient to induce sub-lethal prodromal symptoms. An assessment of the effects of an autologous cell therapy on wound healing on thermal burn injury with concomitant radiation exposure was used to validate the utility of the model. METHODS: Göttingen minipigs were subjected to a 1...
October 3, 2016: International Journal of Radiation Biology
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