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Heavy-ion therapy

Hiroyuki Matsuzaki, Soichiro Ishihara, Kazushige Kawai, Takeshi Nishikawa, Toshiaki Tanaka, Tomomichi Kiyomatsu, Keisuke Hata, Hiroaki Nozawa, Shigeru Yamada, Toshiaki Watanabe
BACKGROUND: The need for surveillance of rare late recurrence of rectal cancer has not yet been established. Local control of unresectable skeletal metastasis is important for palliation of symptoms and support for systemic chemotherapy. CASE PRESENTATION: A Japanese man underwent preoperative pelvic irradiation (50.4 Gy/28 Fr) and low anterior resection at the age of 57 years. The pathological stage was II (T3N0M0). Nine years after the surgery, his carcinoembryonic antigen (CEA) level showed rapid elevation, although he had no symptoms...
December 2016: Surgical Case Reports
C Schuppert, A Mohr, A Schwahofer, S Nill, J Debus, F Sterzing
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
A Dupré, C Mousseaux, A Bouguerba, S Ayed, J Barchazs, M Boukari, D Goldgran-Toledano, C Bornstain, F Vincent
Whether it appears spontaneously or is induced by therapy, the tumor lysis syndrome is responsible for a massive release of ions and puric bases degradation of products in the circulation exceeding the renal excretion capacity. Some, such as uric acid, xanthine, and calcium phosphate, can precipitate in the renal tubules or parenchyma. It must be known to any practitioner supporting patients with hematologic malignancies, mainly high-grade but also some solid tumors. The 2015 publication of the British recommendations pertaining to patients suffering from hematological diseases should be broadcast...
September 19, 2016: La Revue de Médecine Interne
S Incerti, M Douglass, S Penfold, S Guatelli, E Bezak
Emerging radiotherapy treatments including targeted particle therapy, hadron therapy or radiosensitisation of cells by high-Z nanoparticles demand the theoretical determination of radiation track structure at the nanoscale. This is essential in order to evaluate radiation damage at the cellular and DNA level. Since 2007, Geant4 offers physics models to describe particle interactions in liquid water at the nanometre level through the Geant4-DNA Package. This package currently provides a complete set of models describing the event-by-event electromagnetic interactions of particles with liquid water, as well as developments for the modelling of water radiolysis...
September 19, 2016: Physica Medica: PM
Arnold Pompos, Marco Durante, Hak Choy
No abstract text is available yet for this article.
August 18, 2016: JAMA Oncology
Yan Liu, Xi Liu, Xiaodong Jin, Pengbo He, Xiaogang Zheng, Fei Ye, Weiqiang Chen, Qiang Li
Radiotherapy is an important modality for tumor treatment. The central goal of radiotherapy is to deliver a therapeutic dose to the tumor as much as possible whilst sparing the surrounding normal tissues. On one hand, heavy ion radiation induces maximum damage at the end of the track (called the Bragg Peak). Hadron therapy based on heavy ions is considered superior to conventional X-rays and γ-rays radiations for tumors sited in sensitive tissues, childhood cases and radioresistant cancers. On the other hand, radiation sensitizers enhanced the radiation effects in tumors by increasing the dose specifically to the tumor cells...
March 2016: Journal of Nanoscience and Nanotechnology
Koichi Ando, Dudley T Goodhead
Carbon-ion radiotherapy has been used to treat more than 9000 cancer patients in the world since 1994. Spreading of the Bragg peak is necessary for carbon-ion radiotherapy, and is designed based on the linear-quadratic model that is commonly used for photon therapy. Our recent analysis using in vitro cell kills and in vivo mouse tissue reaction indicates that radiation quality affects mainly the alpha terms, but much less the beta terms, which raises the question of whether this is true in other biological systems...
July 5, 2016: Journal of Radiation Research
Takahiro Oike, Hiro Sato, Shin-Ei Noda, Takashi Nakano
Carbon ion radiotherapy holds great promise for cancer therapy. Clinical data show that carbon ion radiotherapy is an effective treatment for tumors that are resistant to X-ray radiotherapy. Since 1994 in Japan, the National Institute of Radiological Sciences has been heading the development of carbon ion radiotherapy using the Heavy Ion Medical Accelerator in Chiba. The Gunma University Heavy Ion Medical Center (GHMC) was established in the year 2006 as a proof-of-principle institute for carbon ion radiotherapy with a view to facilitating the worldwide spread of compact accelerator systems...
2016: Frontiers in Oncology
Dalong Pang, Sergey Chasovskikh, James E Rodgers, Anatoly Dritschilo
Growing interest in proton and heavy ion therapy has reinvigorated research into the fundamental biological mechanisms underlying the therapeutic efficacy of charged-particle radiation. To improve our understanding of the greater biological effectiveness of high-LET radiations, we have investigated DNA double-strand breaks (DSBs) following exposure of plasmid DNA to low-LET Co-60 gamma photon and electron irradiation and to high-LET Beryllium and Argon ions with atomic force microscopy. The sizes of DNA fragments following radiation exposure were individually measured to construct fragment size distributions from which the DSB per DNA molecule and DSB spatial distributions were derived...
2016: Frontiers in Oncology
Choichiro Ozu, Keisuke Aoki, Ken Nakamura, Yasuto Yagi, Yusuke Muro, Toru Nishiyama, Yuho Kono, Kunihiko Yoshioka, Hiroshi Tsuji, Arafumi Maeshima, Shiro Saito
Salvage radical prostatectomy is one of treatments after radiation therapy to patients with prostate cancer. To date, no case of the salvage robotic assisted radical prostatectomy (RARP) following heavy ion radiotherapy (HIRT) has been published. We report on a 70-year-old man with a history of HIRT for prostate cancer in 2011. For 3 years after. HIRT, his serum PSA levels were permissible range. However, his PSA levels were increased. We had diagnosis localized prostate cancer after HIRT. We had carried out salvage RARP...
July 2016: Urology Case Reports
Agnes Schipler, Veronika Mladenova, Aashish Soni, Vladimir Nikolov, Janapriya Saha, Emil Mladenov, George Iliakis
Chromosome translocations are hallmark of cancer and of radiation-induced cell killing, reflecting joining of incongruent DNA-ends that alter the genome. Translocation-formation requires DNA end-joining mechanisms and incompletely characterized, permissive chromatin conditions. We show that chromatin destabilization by clusters of DNA double-strand-breaks (DSBs) generated by the I-SceI meganuclease at multiple, appropriately engineered genomic sites, compromises c-NHEJ and markedly increases cell killing and translocation-formation compared to single-DSBs...
September 19, 2016: Nucleic Acids Research
Kathryn D Held, Eleanor A Blakely, Michael D Story, Derek I Lowenstein
Although clinical studies with carbon ions have been conducted successfully in Japan and Europe, the limited radiobiological information about charged particles that are heavier than protons remains a significant impediment to exploiting the full potential of particle therapy. There is growing interest in the U.S. to build a cancer treatment facility that utilizes charged particles heavier than protons. Therefore, it is essential that additional radiobiological knowledge be obtained using state-of-the-art technologies and biological models and end points relevant to clinical outcome...
June 2016: Radiation Research
Xurui Zhang, Caiyong Ye, Fang Sun, Wenjun Wei, Burong Hu, Jufang Wang
Persistent DNA damage is considered as a main cause of cellular senescence induced by ionizing radiation. However, the molecular bases of the DNA damage and their contribution to cellular senescence are not completely clear. In this study, we found that both heavy ions and X-rays induced senescence in human uveal melanoma 92-1 cells. By measuring senescence associated-β-galactosidase and cell proliferation, we identified that heavy ions were more effective at inducing senescence than X-rays. We observed less efficient repair when DNA damage was induced by heavy ions compared with X-rays and most of the irreparable damage was complex of single strand breaks and double strand breaks, while DNA damage induced by X-rays was mostly repaired in 24 hours and the remained damage was preferentially associated with telomeric DNA...
2016: PloS One
Aaron Laine, Arnold Pompos, Michael Story, Steve Jiang, Robert Timmerman, Hak Choy
Investigation into the use of heavy ions for therapeutic purposes was initially pioneered at Lawrence Berkeley National Laboratory in the 1970s [1, 2]. More recently, however, significant advances in determining the safety and efficacy of using heavy ions in the hospital setting have been reported in Japan and Germany [3, 4]. These promising results have helped to resurrect interest in the establishment of hospital-based heavy ion therapy in the United States. In line with these efforts, world experts in the field of heavy ion therapy were invited to attend the first annual International Symposium on Ion Therapy, which was held at the University of Texas Southwestern Medical Center, Dallas, Texas, from November 12 to 14, 2014...
2016: International Journal of Particle Therapy
Lucas Burigo, Igor Pshenichnov, Igor Mishustin, Gerhard Hilgers, Marcus Bleicher
The Geant4-based Monte Carlo model for Heavy-Ion Therapy (MCHIT) was extended to study the patterns of energy deposition at sub-micrometer distance from individual ion tracks. Dose distributions for low-energy (1)H, (4)He, (12)C and (16)O ions measured in several experiments are well described by the model in a broad range of radial distances, from 0.5 to 3000 nm. Despite the fact that such distributions are characterized by long tails, a dominant fraction of deposited energy (∼80%) is confined within a radius of about 10 nm...
May 21, 2016: Physics in Medicine and Biology
Cary Zeitlin, Chiara La Tessa
The transport of the so-called HZE particles (those having high charge, Z, and energy, E) through matter is crucially important both in space radiation protection and in the clinical setting where heavy ions are used for cancer treatment. HZE particles are usually considered those having Z > 1, though sometimes Z > 2 is meant. Transport physics is governed by two types of interactions, electromagnetic (ionization energy loss) and nuclear. Models of transport, such as those used in treatment planning and space mission planning must account for both effects in detail...
2016: Frontiers in Oncology
Zhang-Ru Yang, Ning Zhao, Jin Meng, Ze-Liang Shi, Bing-Xin Li, Xian-Wei Wu, Ping Li, Qing Zhang, Xun-Bin Wei, Shen Fu
The immune system plays a complementary role in the cytotoxic activity of radiotherapy. Here, we examined changes in immune cell subsets after heavy ion therapy for prostate cancer. The lymphocyte counts were compared with acute radiotherapy-related toxicity, defined according to the Common Terminology Criteria for Adverse Events, and short-term local efficacy, defined based on prostate-specific antigen concentrations. Confirmed prostate cancer patients who had not received previous radiotherapy were administered carbon ion radiotherapy (CIR) in daily fractions of 2...
May 3, 2016: Oncotarget
Anne-Sophie Wozny, Gersende Alphonse, Priscillia Battiston-Montagne, Stéphanie Simonet, Delphine Poncet, Etienne Testa, Jean-Baptiste Guy, Chloé Rancoule, Nicolas Magné, Michael Beuve, Claire Rodriguez-Lafrasse
Nowadays, head and neck squamous cell carcinoma (HNSCC) treatment failure is mostly explained by locoregional progression or intrinsic radioresistance. Radiotherapy (RT) has recently evolved with the emergence of heavy ion radiations or new fractionation schemes of photon therapy, which modify the dose rate of treatment delivery. The aim of the present study was then to evaluate the in vitro influence of a dose rate variation during conventional RT or carbon ion hadrontherapy treatment in order to improve the therapeutic care of patient...
2016: Frontiers in Oncology
Liheng Tian, Qiang Li, Xinguo Liu, Zhongying Dai, Tingyan Fu, Pengbo He, Yuanlin Yan, Yuanyuan Ma, Qiyan Huang
PURPOSE: To improve the efficacy of heavy ion therapy, β-delayed particle decay (9)C beam as a double irradiation source for cancer therapy has been proposed. The authors' previous experiment showed that relative biological effectiveness (RBE) values at the depths around the Bragg peak of a (9)C beam were enhanced and compared to its stable counterpart (12)C beam. The purpose of this study was to explore the nature of the biological efficacy enhancement theoretically. METHODS: A Monte Carlo simulation study was conducted in this study...
March 2016: Medical Physics
K Katagiri, A Noda, K Nagatsu, M Nakao, S Hojo, M Muramatsu, K Suzuki, T Wakui, K Noda
A new singly charged ion source using electron impact ionization has been developed to realize an isotope separation on-line system for simultaneous positron emission tomography imaging and heavy-ion cancer therapy using radioactive (11)C ion beams. Low-energy electron beams are used in the electron impact ion source to produce singly charged ions. Ionization efficiency was calculated in order to decide the geometric parameters of the ion source and to determine the required electron emission current for obtaining high ionization efficiency...
February 2016: Review of Scientific Instruments
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