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https://www.readbyqxmd.com/read/27925861/modeling-heavy-ion-impairment-of-hippocampal-neurogenesis-after-acute-and-fractionated-irradiation
#1
Eliedonna Cacao, Francis A Cucinotta
Radiation-induced impairment of neurogenesis in the hippocampal dentate gyrus is a concern due to its reported association with cognitive detriments after radiotherapy for brain cancers and the possible risks to astronauts chronically exposed to space radiation. Here, we have extended our recent work in a mouse model of impaired neurogenesis after exposure to low-linear energy transfer (LET) heavy ion radiation. To our knowledge, this is the first report of a predictive mathematical model of radiation-induced changes to neurogenesis for a variety of radiation types after acute or fractionated irradiation...
December 7, 2016: Radiation Research
https://www.readbyqxmd.com/read/27911139/volumetric-response-of-intracranial-meningioma-after-photon-or-particle-irradiation
#2
Petra Mozes, Jan Oliver Dittmar, Daniel Habermehl, Eric Tonndorf-Martini, Katalin Hideghety, Anne Dittmar, Jürgen Debus, Stephanie E Combs
BACKGROUND: Meningiomas are usually slow growing, well circumscribed intracranial tumors. In symptom-free cases observation with close follow-up imaging could be performed. Symptomatic meningiomas could be surgically removed and/or treated with radiotherapy. The study aimed to evaluate the volumetric response of intracranial meningiomas at different time points after photon, proton, and a mixed photon and carbon ion boost irradiation. PATIENTS AND METHODS: In Group A 38 patients received proton therapy (median dose: 56 GyE in 1...
December 2, 2016: Acta Oncologica
https://www.readbyqxmd.com/read/27908621/radiotherapy-with-curative-intent-in-patients-with-early-stage-medically-inoperable-non-small-cell-lung-cancer-a-systematic-review
#3
REVIEW
Conrad B Falkson, Emily T Vella, Edward Yu, Medhat El-Mallah, Robert Mackenzie, Peter M Ellis, Yee C Ung
Patients with early-stage non-small-cell lung cancer (NSCLC) who are unable to undergo surgery can be offered radiation therapy (RT). Previously, conventional RT was offered; however, newer techniques such as stereotactic body RT (SBRT) have become available. The objective of the present systematic review was to investigate the effectiveness of RT with curative intent in patients with early-stage medically inoperable NSCLC. MEDLINE, EMBASE, and the Cochrane Library were searched for studies comparing stereotactic RT with curative intent compared with observation or other types of RT for early-stage, medically inoperable, NSCLC...
October 27, 2016: Clinical Lung Cancer
https://www.readbyqxmd.com/read/27894244/umbelliferone-decreases-intracellular-ph-and-sensitizes-melanoma-cell-line-a375-to-dacarbazin-comparison-with-acetazolamide
#4
Clémentine Puech, Morgane Chatard, Delphine Felder-Flesch, Nathalie Prevot, Nathalie Perek
The high degree of malignancy of tumour cells is linked to alterations of many physiological parameters like the intracellular pH (pHi). The pHi in cancer cell line is regulated by the anhydrase carbonique IX (CA IX). The main enzymatic function of the CA IX protein is to catalyze the hydration of carbon dioxide into bicarbonate ions and protons. Inhibiton of transmembrane tumor associated isozyme carbonic anhydrase IX (CA IX) with specific inhibitors is a promising and expanding field as CA IX is involved in tumor progression...
November 28, 2016: Current Molecular Pharmacology
https://www.readbyqxmd.com/read/27885084/analysis-of-neutron-production-in-passively-scattered-ion-beam-therapy
#5
Seunguk Heo, Seunghoon Yoo, Yongkeun Song, Eunho Kim, Jaeik Shin, Soorim Han, Wongyun Jung, Sanghee Nam, Rena Lee, Kitae Lee, Sungho Cho
A new treatment facility for heavy ion therapy since 2010 was constructed. In the broad beam, a range shifter, ridge filter and multi leaf collimator (MLC) for the generation of the spread-out Bragg peak is used. In this case, secondary neutrons produced by the interactions of the ion field with beam-modifying devices (e.g. double-scattering system, beam shaping collimators and range compensators) are very important for patient safety. Therefore, these components must be carefully examined in the context of secondary neutron yield and associated secondary cancer risk...
November 24, 2016: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/27869084/verification-of-dose-distribution-in-carbon-ion-radiation-therapy-for-stage-i-lung-cancer
#6
Daisuke Irie, Jun-Ichi Saitoh, Katsuyuki Shirai, Takanori Abe, Yoshiki Kubota, Makoto Sakai, Shin-Ei Noda, Tatsuya Ohno, Takashi Nakano
PURPOSE: To evaluate robustness of dose distribution of carbon-ion radiation therapy (C-ion RT) in non-small cell lung cancer (NSCLC) and to identify factors affecting the dose distribution by simulated dose distribution. METHODS AND MATERIALS: Eighty irradiation fields for delivery of C-ion RT were analyzed in 20 patients with stage I NSCLC. Computed tomography images were obtained twice before treatment initiation. Simulated dose distribution was reconstructed on computed tomography for confirmation under the same settings as actual treatment with respiratory gating and bony structure matching...
December 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27836119/a-multi-institutional-analysis-of-prospective-studies-of-carbon-ion-radiotherapy-for-prostate-cancer-a-report-from-the-japan-carbon-ion-radiation-oncology-study-group-j-cros
#7
Takuma Nomiya, Hiroshi Tsuji, Hidemasa Kawamura, Tatsuya Ohno, Shingo Toyama, Yoshiyuki Shioyama, Yuko Nakayama, Kenji Nemoto, Hirohiko Tsujii, Tadashi Kamada
BACKGROUND AND PURPOSE: A multi-institutional observational study (J-CROS1501PR) has been carried out to analyze outcomes of carbon-ion radiotherapy (CIRT) for patients with prostate cancer. PATIENTS AND METHODS: Data of the patients enrolled in prospective studies of following 3 CIRT institutions were analyzed: National Institute of Radiological Sciences (NIRS; Chiba, Japan), Gunma University Heavy Ion Medical Center (GHMC; Gunma, Japan), and Ion Beam Therapy Center, SAGA HIMAT Foundation (HIMAT; Saga, Japan)...
November 2016: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/27834058/emerging-relationship-between-cftr-actin-and-tight-junction-organization-in-cystic-fibrosis-airway-epithelium
#8
REVIEW
Stefano Castellani, Maria Favia, Lorenzo Guerra, Annalucia Carbone, Anna Claudia Abbattiscianni, Sante Di Gioia, Valeria Casavola, Massimo Conese
Cystic fibrosis (CF), one of the most common genetic disorders affecting primarily Caucasians, is due to mutations in the CF Transmembrane Conductance Regulator (CFTR) gene, encoding for a chloride channel also acting as regulator of other transmembrane proteins. In healthy subjects, CFTR is maintained in its correct apical plasma membrane location via the formation of a multiprotein complex in which scaffold proteins (such as NHERF1) and signaling molecules (such as cAMP and protein kinases) guarantee its correct functioning...
November 11, 2016: Histology and Histopathology
https://www.readbyqxmd.com/read/27806584/triple-ionization-chamber-method-for-clinical-dose-monitoring-with-a-be-covered-li-bnct-field
#9
Thanh Tat Nguyen, Tsuyoshi Kajimoto, Kenichi Tanaka, Chien Cong Nguyen, Satoru Endo
PURPOSE: Fast neutron, gamma-ray, and boron doses have different relative biological effectiveness (RBE). In boron neutron capture therapy (BNCT), the clinical dose is the total of these dose components multiplied by their RBE. Clinical dose monitoring is necessary for quality assurance of the irradiation profile; therefore, the fast neutron, gamma-ray, and boron doses should be separately monitored. To estimate these doses separately, and to monitor the boron dose without monitoring the thermal neutron fluence, the authors propose a triple ionization chamber method using graphite-walled carbon dioxide gas (C-CO2), tissue-equivalent plastic-walled tissue-equivalent gas (TE-TE), and boron-loaded tissue-equivalent plastic-walled tissue-equivalent gas [TE(B)-TE] chambers...
November 2016: Medical Physics
https://www.readbyqxmd.com/read/27804847/the-warburg-effect-and-the-hallmarks-of-cancer
#10
Laurent Schwartz, Claudiu T Supuran, Khalid O Alfarouk
It is a longstanding debate whether cancer is one disease or a set of very diverse diseases. The goal of this paper is to suggest strongly that most (if not all) the hallmarks of cancer could be the consequence of the Warburg's effect. As a result of the metabolic impairment of the oxidative phosphorylation, there is a decrease in ATP concentration. To compensate the reduced energy yield, there is massive glucose uptake, anaerobic glycolysis, with an up-regulation of the Pentose Phosphate Pathway resulting in increased biosynthesis leading to increased cell division and local pressure...
October 31, 2016: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/27788946/from-r%C3%A3-ntgen-rays-to-carbon-ion-therapy-the-evolution-of-modern-radiation-oncology-in-germany
#11
EDITORIAL
Jonathan W Lischalk, Laila König, Michael C Repka, Matthias Uhl, Anatoly Dritschilo, Klaus Herfarth, Jürgen Debus
No abstract text is available yet for this article.
November 15, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27787696/carbon-monoxide-releasing-molecule-2-inhibition-of-snake-venom-thrombin-like-activity-novel-biochemical-brake
#12
Vance G Nielsen, Charles M Bazzell
A complication of defibrinogenation therapy with snake venom enzymes such as ancrod is hypofibrinogenemia associated bleeding secondary to no human-derived inhibitor being available to inactivate or diminish the activity of such enzymes. Of interest, ancrod contains a critical histidine residue without which enzymatic activity is inhibited, and carbon monoxide has been demonstrated to inhibit biomolecular function by interacting with histidine moieties in ion channels. We tested the hypothesis that exposure of three different snake venoms containing serine proteases with thrombin-like activity (which included ancrod) to carbon monoxide derived from carbon monoxide releasing molecule-2 would diminish their effects on plasmatic coagulation as assessed by thrombelastography...
October 27, 2016: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/27770265/hadrontherapy-from-the-italian-radiation-oncologist-point-of-view-face-the-reality-the-italian-society-of-oncological-radiotherapy-airo-survey
#13
Giulia Marvaso, Barbara Vischioni, Barbara Alicja Jereczek-Fossa, Delia Ciardo, Piero Fossati, Tommaso Giandini, Sara Morlino, Mauro Carrara, Paola Romanelli, Elvio Russi, Francesca Valvo, Riccardo Valdagni, Roberto Orecchia
Hadrontherapy has been in constant progress in the past decades. Due to the increasing interest in this field and the spreading of the technique in Italy and worldwide, the Italian Society of Radiation Oncology surveyed (by an online survey) its members regarding their perception of hadrontherapy. The survey outline addressed different items all related to hadrontherapy, such as: demographics (3 items), personal knowledge (5 items), actual use in clinical practice (5 items), and future perspectives and development (5 items)...
October 21, 2016: La Radiologia Medica
https://www.readbyqxmd.com/read/27737652/ct-guided-cryoablation-for-locally-recurrent-or-metastatic-bone-and-soft-tissue-tumor-initial-experience
#14
Michiro Susa, Kazutaka Kikuta, Robert Nakayama, Kazumasa Nishimoto, Keisuke Horiuchi, Sota Oguro, Masanori Inoue, Hideki Yashiro, Seishi Nakatsuka, Masaya Nakamura, Morio Matsumoto, Kazuhiro Chiba, Hideo Morioka
BACKGROUND: Historically, local control of recurrent sarcomas has been limited to radiotherapy when surgical re-resection is not feasible. For metastatic carcinomas to the bone or soft tissue, radiotherapy and some interventional radiology treatment along with other systemic therapies have been widely advocated due to the possibility of disseminated disease. These techniques are effective in alleviating pain and achieving local control for some tumor types, but it has not been effective for prolonged local control of most tumors...
October 13, 2016: BMC Cancer
https://www.readbyqxmd.com/read/27736917/optimization-of-carbon-ion-treatment-plans-by-integrating-tissue-specific-%C3%AE-%C3%AE-values-for-patients-with-non-resectable-pancreatic-cancer
#15
Constantin Dreher, Christian Scholz, Mira Pommer, Stephan Brons, Hannah Prokesch, Swantje Ecker, Jürgen Debus, Oliver Jäkel, Stephanie E Combs, Daniel Habermehl
BACKGROUND: The aim of the thesis is to improve treatment plans of carbon ion irradiation by integrating the tissues' specific [Formula: see text]-values for patients with locally advanced pancreatic cancer (LAPC). MATERIAL AND METHODS: Five patients with LAPC were included in this study. By the use of the treatment planning system Syngo RT Planning (Siemens, Erlangen, Germany) treatment plans with carbon ion beams have been created. Dose calculation was based on [Formula: see text]-values for both organs at risk (OAR) and the tumor...
2016: PloS One
https://www.readbyqxmd.com/read/27726113/late-sacral-recurrence-of-rectal-cancer-treated-by-heavy-ion-radiotherapy-a-case-report
#16
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
https://www.readbyqxmd.com/read/27717378/worst-case-optimization-for-interfractional-motion-mitigation-in-carbon-ion-therapy-of-pancreatic-cancer
#17
Julian Steitz, Patrick Naumann, Silke Ulrich, Matthias F Haefner, Florian Sterzing, Uwe Oelfke, Mark Bangert
INTRODUCTION: The efficacy of radiation therapy treatments for pancreatic cancer is compromised by abdominal motion which limits the spatial accuracy for dose delivery - especially for particles. In this work we investigate the potential of worst case optimization for interfractional offline motion mitigation in carbon ion treatments of pancreatic cancer. METHODS: We implement a worst case optimization algorithm that explicitly models the relative biological effectiveness of carbon ions during inverse planning...
October 7, 2016: Radiation Oncology
https://www.readbyqxmd.com/read/27677663/respiration-gated-fast-rescanning-carbon-ion-radiotherapy
#18
Daniel K Ebner, Hiroshi Tsuji, Shigeo Yasuda, Naoyoshi Yamamoto, Shinichiro Mori, Tadashi Kamada
Phase-controlled rescanning of the carbon-ion beam offers fast and precise dose application with decreased irradiation of normal tissue. However, organ movement with respiration remains a unique challenge. Technological development has enabled the simultaneous application of beam-energy-modulated markerless phase-controlled rescanning with respiration gating, allowing scanning treatment of respiration-mobile tumors with carbon. A total of 10 patients with tumors in the liver or lung were treated in a feasibility study at our facility using this combination...
September 27, 2016: Japanese Journal of Clinical Oncology
https://www.readbyqxmd.com/read/27675786/carbon-ion-radiation-therapy-for-locally-recurrent-rectal-cancer-in-patients-with-prior-conventional-pelvic-irradiation
#19
S Yamada, T Kamada, D K Ebner, Y Isozaki, S Kawashiro, N Okada, S Yasuda, H Tsuji, H Tsujii, H Matsubara, T Isozaki
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27675734/a-multi-institutional-analysis-of-prospective-studies-of-carbon-ion-radiation-therapy-for-prostate-cancer-an-analysis-of-2157-patients-from-the-japan-carbon-ion-radiation-oncology-study-group-j-cros
#20
T Nomiya, H Tsuji, H Kawamura, T Ohno, S Toyama, Y Shioyama, Y Nakayama, K Nemoto, H Tsujii, T Kamada
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
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