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Radiation fibrosis

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https://www.readbyqxmd.com/read/28636548/ilomastat-a-synthetic-inhibitor-of-mmps-prevents-lung-injury-induced-by-%C3%AE-ray-irradiation-in-mice
#1
Xiaoman Li, Dehui Ma, Xiaodan Zha, Dongqin Quan, Dong Pan, Manji Sun, Burong Hu, Baoquan Zhao
Lung injury is one of the pathological features in human or animal after radiation and the main side effect for patient after lung cancer radiotherapy. The efficient protective strategy still needs to exploit and the underlying mechanisms remain to be investigated. We found that the expression and activity of matrix metalloproteinases (MMPs) significantly increased at the early stage of radiation-induced lung injury (RILI). Pretreatment with Ilomastat, a synthetic inhibitor of MMPs, decreased the expression and activity of MMPs and significantly alleviated the lung inflammation and fibrosis in the irradiated mice, as well as enhanced the survival of irradiated mice...
June 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28629952/analysis-of-outcomes-using-hypofractionated-tumor-bed-boost-combined-with-hypofractionated-whole-breast-irradiation-for-early-stage-breast-cancer
#2
Esther Yu, David Huang, Kara Leonard, Thomas Dipetrillo, David Wazer, Jaroslaw Hepel
INTRODUCTION: Tumor bed boost improves local control and is an important part of breast-conserving therapy. Data on the use of a hypofractioned tumor bed boost are needed. We performed a retrospective analysis of patients treated with hypofractionated whole breast irradiation (WBI) and hypofractionated boost to examine acute and delayed outcomes. MATERIALS AND METHODS: We examined the records of patients treated with hypofractionated WBI and tumor bed boost after lumpectomy for Stage 0 to II breast cancer...
May 25, 2017: Clinical Breast Cancer
https://www.readbyqxmd.com/read/28624924/evaluation-of-hepatic-fibrosis-a-review-from-the-society-of-abdominal-radiology-disease-focus-panel
#3
REVIEW
Jeanne M Horowitz, Sudhakar K Venkatesh, Richard L Ehman, Kartik Jhaveri, Patrick Kamath, Michael A Ohliger, Anthony E Samir, Alvin C Silva, Bachir Taouli, Michael S Torbenson, Michael L Wells, Benjamin Yeh, Frank H Miller
Hepatic fibrosis is potentially reversible; however early diagnosis is necessary for treatment in order to halt progression to cirrhosis and development of complications including portal hypertension and hepatocellular carcinoma. Morphologic signs of cirrhosis on ultrasound (US), computed tomography (CT), and magnetic resonance imaging (MRI) alone are unreliable and are seen with more advanced disease. Newer imaging techniques to diagnose liver fibrosis are reliable and accurate, and include magnetic resonance elastography and US elastography (one-dimensional transient elastography and point shear wave elastography or acoustic radiation force impulse imaging)...
June 17, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28621668/blocking-epithelial-to-mesenchymal-transition-in-glioblastoma-with-a-sextet-of-repurposed-drugs-the-eis-regimen
#4
Richard E Kast, Nicolas Skuli, Georg Karpel-Massler, Guido Frosina, Timothy Ryken, Marc-Eric Halatsch
This paper outlines a treatment protocol to run alongside of standard current treatment of glioblastoma- resection, temozolomide and radiation. The epithelial to mesenchymal transition (EMT) inhibiting sextet, EIS Regimen, uses the ancillary attributes of six older medicines to impede EMT during glioblastoma. EMT is an actively motile, therapy-resisting, low proliferation, transient state that is an integral feature of cancers' lethality generally and of glioblastoma specifically. It is believed to be during the EMT state that glioblastoma's centrifugal migration occurs...
June 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28619524/molecular-determinants-of-radiosensitivity-in-normal-and-tumor-tissue-a-bioinformatic-approach
#5
Athanasia Pavlopoulou, Pantelis G Bagos, Vasiliki Koutsandrea, Alexandros G Georgakilas
Although radiation therapy is a treatment of choice for cancer, a high percentage of patients develop adverse effects in normal tissue following radiotherapy, mainly, due to genetic factors. Notably, although it is established that a lower dose of ionizing radiation can minimize the tumor cell population in radiosensitive cancer patients, the sensitivity of tumor cells to radiation has not gained enough attention. In this mini-review, the molecular pathways/mechanisms and the related molecules involved in clinically relevant radiotoxicity, as well as normal and tumor cell radiosensitivity, were investigated for various types of cancers employing bioinformatics approaches...
June 12, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28613990/different-sequences-of-fractionated-low-dose-proton-and-single-iron-radiation-induced-divergent-biological-responses-in-the-heart
#6
Sharath P Sasi, Xinhua Yan, Marian Zuriaga-Herrero, Hannah Gee, Juyong Lee, Raman Mehrzad, Jin Song, Jillian Onufrak, James Morgan, Heiko Enderling, Kenneth Walsh, Raj Kishore, David A Goukassian
Deep-space travel presents risks of exposure to ionizing radiation composed of a spectrum of low-fluence protons ((1)H) and high-charge and energy (HZE) iron nuclei (e.g., (56)Fe). When exposed to galactic cosmic rays, each cell in the body may be traversed by (1)H every 3-4 days and HZE nuclei every 3-4 months. The effects of low-dose sequential fractionated (1)H or HZE on the heart are unknown. In this animal model of simulated ionizing radiation, middle-aged (8-9 months old) male C57BL/6NT mice were exposed to radiation as follows: group 1, nonirradiated controls; group 2, three fractionated doses of 17 cGy (1)H every other day ((1)H × 3); group 3, three fractionated doses of 17 cGy (1)H every other day followed by a single low dose of 15 cGy (56)Fe two days after the final (1)H dose ((1)H × 3 + (56)Fe); and group 4, a single low dose of 15 cGy (56)Fe followed (after 2 days) by three fractionated doses of 17 cGy (1)H every other day ((56)Fe + (1)H × 3)...
June 14, 2017: Radiation Research
https://www.readbyqxmd.com/read/28609013/polydatin-alleviated-radiation-induced-lung-injury-through-activation-of-sirt3-and-inhibition-of-epithelial-mesenchymal-transition
#7
Kun Cao, Xiao Lei, Hu Liu, Hainan Zhao, Jiaming Guo, Yuanyuan Chen, Yang Xu, Ying Cheng, Cong Liu, Jianguo Cui, Bailong Li, Jianming Cai, Fu Gao, Yanyong Yang
Radiation-induced lung injury (RILI) is one of the most common and fatal complications of thoracic radiotherapy. It is characterized with two main features including early radiation pneumonitis and fibrosis in later phase. This study was to investigate the potential radioprotective effects of polydatin (PD), which was shown to exert anti-inflammation and anti-oxidative capacities in other diseases. In this study, we demonstrated that PD-mitigated acute inflammation and late fibrosis caused by irradiation. PD treatment inhibited TGF-β1-Smad3 signalling pathway and epithelial-mesenchymal transition...
June 13, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28608120/cosmetic-outcome-and-chronic-breast-toxicity-after-intraoperative-radiation-therapy-iort-as-a-single-modality-or-as-a-boost-using-the-intrabeam-%C3%A2-device-a-prospective-study
#8
Stéphane Key, Petra Miglierini, Pierre-François Dupré, Sandrine Guilbert, Anne-Sophie Lucia, Ronan Abgral, Virginie Conan-Charlet, Arnaud Uguen, Olivier Pradier, Ulrike Schick
PURPOSE: We aim to report our results in terms of chronic toxicities and cosmetic outcomes after intraoperative radiotherapy (IORT) using kV X-rays in women treated for early breast cancer at our institution. METHODS: Patients with early breast carcinoma were recruited between April 2011 and November 2014. After breast-conserving surgery, patients were treated with IORT using the Intrabeam(®) device. IORT was completed by whole-breast radiotherapy (WBRT) at a dose of 46-50...
June 12, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28596060/-medical-prevention-and-treatment-of-radiation-induced-pulmonary-complications
#9
A Vallard, C Rancoule, H Le Floch, J-B Guy, S Espenel, C Le Péchoux, É Deutsch, N Magné, C Chargari
Radiation-induced lung injuries mainly include the (acute or sub-acute) radiation pneumonitis, the lung fibrosis and the bronchiolitis obliterans organizing pneumonia (BOOP). The present review aims at describing the diagnostic process, the current physiopathological knowledge, and the available (non dosimetric) preventive and curative treatments. Radiation-induced lung injury is a diagnosis of exclusion, since clinical, radiological, or biological pathognomonic evidences do not exist. Investigations should necessarily include a thoracic high resolution CT-scan and lung function tests with a diffusing capacity of the lung for carbon monoxide...
June 5, 2017: Cancer Radiothérapie: Journal de la Société Française de Radiothérapie Oncologique
https://www.readbyqxmd.com/read/28586961/long-term-results-of-a-highly-performing-conformal-electron-therapy-technique-for-chest-wall-irradiation-after-mastectomy
#10
Noemie Grellier Adedjouma, Marion Chevrier, Alain Fourquet, Emilie Costa, Haoping Xu, Frederique Berger, Francois Campana, Fatima Laki, Philippe Beuzeboc, Delphine Lefeuvre, Nathalie Fournier-Bidoz, Youlia M Kirova
PURPOSE: To evaluate locoregional control and survival after mastectomy, as well as toxicity, in patients irradiated by a previously described postmastectomy highly conformal electron beam radiation therapy technique (PMERT). METHODS AND MATERIALS: We included all women irradiated by postmastectomy electron beam radiation therapy for nonmetastatic breast cancer between 2007 and 2011 in our department. Acute and late toxicities were retrospectively assessed using Common Terminology Criteria for Adverse Events version 3...
May 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28583530/increased-stiffness-of-the-remnant-right-lobe-liver-after-left-lobectomy-or-lateral-segmentectomy-in-donors-of-living-donor-liver-transplantation
#11
H-K Wang, Y-C Lai, Y-H Lin, H-J Chiou, Y-H Chou
BACKGROUND: Liver stiffness is associated with the degree of fibrosis along with other factors. Abrupt change of liver perfusion after hepatectomy is one such factor. In this study, we performed ultrasound elastography to explore the stiffness of the right lobe liver before and after hepatectomy in donors who underwent resection of left lobe or lateral segment of liver. METHODS: A total of 32 left lobe liver donors (18 male and 14 female; age range, 21-55 years; mean age, 35...
June 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28583515/acoustic-radiation-force-impulse-imaging-of-the-transplant-kidney-correlation-between-cortical-stiffness-and-arterial-resistance-in-early-post-transplant-period
#12
H-K Wang, Y-C Lai, Y-H Lin, H-J Chiou, Y-H Chou
BACKGROUND: Acoustic radiation force impulse (ARFI) imaging is a noninvasive imaging modality for quantitative assessment of tissue stiffness. This study utilized ARFI imaging to assess the stiffness of a transplant renal cortex within the first month after renal transplantation and to explore the correlation between the cortical stiffness and arterial resistance of the transplant kidney. METHODS: Forty renal transplant recipients (male/female = 26/14; mean age: 45...
June 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28581403/plasma-levels-of-il-8-and-tgf-%C3%AE-1-predict-radiation-induced-lung-toxicity-in-non-small-cell-lung-cancer-a-validation-study
#13
Shulian Wang, Jeff Campbell, Matthew H Stenmark, Jing Zhao, Paul Stanton, Martha M Matuszak, Randall K Ten Haken, Feng-Ming Spring Kong
PURPOSE AND OBJECTIVES: We previously reported that the combination of mean lung dose (MLD) and inflammatory cytokines interleukin-8 (IL-8) and transforming growth factor-β1 (TGF-β1) may provide a more accurate model for radiation-induced lung toxicity (RILT) prediction in 58 patients with non-small cell lung cancer (NSCLC). This study is to validate the previous findings with new patients and to explore new models with more cytokines. METHODS AND MATERIALS: One hundred forty-two patients with stage I-III NSCLC treated with definitive radiation therapy (RT) from prospective studies were included...
July 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28578783/biology-and-treatment-of-aggressive-fibromatosis-or-desmoid-tumor
#14
REVIEW
Keith M Skubitz
Aggressive fibromatosis, also known as desmoid-type fibromatosis (DTF) or desmoid tumor, is an uncommon locally invasive tumor. Because of its low incidence and variable behavior, DTF is often first seen by physicians who are not familiar with it, and recent advances in understanding this disease have led to changes in treatment approaches. The Wnt (β-catenin) pathway appears to play a key role in DTF pathogenesis, and recent studies of DTF biology suggest a possible model of DTF pathogenesis. Histologically, DTF shows a poorly circumscribed proliferation of myofibroblast-like cells with variable collagen deposition, similar to the proliferative phase of wound healing, and DTF has been associated with trauma and pregnancy...
June 2017: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/28570981/ethyl-pyruvate-alleviates-radiation-induced-lung-injury-in-mice
#15
Baoqing Chen, Feifei Na, Hui Yang, Rui Li, Mengqian Li, Xiaowen Sun, Binbin Hu, Guodong Huang, Jie Lan, He Xu, Ruizhan Tong, Xianming Mo, Jianxin Xue, You Lu
OBJECTIVE: Radiation-induced lung injury (RILI) is a common complication of thoracic cancer radiation therapy. Ethyl pyruvate (EP) was reported to have an ameliorating effect on a variety of systemic inflammation reactions, including acute lung injury. However, the protective effect of EP on RILI has not been explored. MATERIALS/METHODS: RILI was induced by a single thoracic irradiation of 16Gy X-rays in C57BL/6 mice. Mice were divided into four groups: control, radiation, 100mg/kg EP, and 200mg/kg dexamethasone...
May 29, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28570415/inflammatory-pseudotumor-of-the-temporal-bone-a-case-series
#16
Timothy E Ortlip, Virginia E Drake, Prashant Raghavan, John C Papadimitriou, Neil C Porter, David J Eisenman, Ronna Hertzano
OBJECTIVE: Inflammatory pseudotumor of the temporal bone is a benign, idiopathic inflammatory process that is locally invasive and a cause of significant morbidity. This study reviews our experience with seven patients and is currently the largest series to date. STUDY DESIGN: Retrospective review from January 1, 2014 to January 1, 2016. SETTING: Single tertiary medical center. PATIENTS: There were five male and two female (n = 7) subjects with a diagnosis of temporal bone inflammatory pseudotumor...
May 31, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28562065/role-of-platelet-derived-tgf-%C3%AE-1-and-ros-in-radiation-induced-organ-fibrosis
#17
Jasimuddin Ahamed, Jeffrey Laurence
SIGNIFICANCE: This review evaluates the role of platelet-derived TGF-β1 in oxidative stress-linked pathologic fibrosis, with an emphasis on the heart and kidney, using ionizing radiation as a clinically relevant stimulus. Current radiation-induced organ fibrosis interventions focus on pan-neutralization of transforming growth factor (TGF)-β1 or use of anti-oxidants and anti-proliferative agents, with limited clinical efficacy. Recent Advances: Pathologic fibrosis represents excessive accumulation of collagen and other extracellular matrix (ECM) components following dysregulation of a balance between ECM synthesis and degradation...
May 31, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28557143/liver-stiffness-reduction-correlates-with-histological-characteristics-of-hepatitis-c-patients-with-sustained-virological-response
#18
Yoshihiko Tachi, Takanori Hirai, Yuko Kojima, Yoji Ishizu, Takashi Honda, Teiji Kuzuya, Kazuhiko Hayashi, Masatoshi Ishigami, Hidemi Goto
BACKGROUND AND AIMS: We investigated the correlation between histological characteristics and changes in liver stiffness in patients with sustained virological response using acoustic radiation force impulse elastography. METHODS: In this prospective study, we enrolled 176 Hepatitis C patients with sustained virological response who underwent acoustic radiation force impulse elastography and liver biopsy before antiviral treatment, and serial acoustic radiation force impulse elastography at the end of treatment and at 24 weeks after the end of treatment...
May 30, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28550173/experimental-cardiac-radiation-exposure-induces-ventricular-diastolic-dysfunction-with-preserved-ejection-fraction
#19
Hirofumi Saiki, Gilles Moulay, Adam J Guenzel, Weibin Liu, Teresa Decklever, Kelly Classic, Linh Pham, Horng H Chen, John C Burnett, Stephen J Russell, Margaret M Redfield
BACKGROUND: Breast cancer radiotherapy increases the risk of heart failure (HF) with preserved ejection fraction (HFpEF). Cardiomyocytes are highly radio-resistant but radiation specifically affects coronary microvascular endothelial cells with subsequent microvascular inflammation and rarefaction. The effects of radiation on left ventricular (LV) diastolic function are poorly characterized. We hypothesized that cardiac radiation exposure may result in diastolic dysfunction without reduced EF...
May 26, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28538806/development-of-a-new-model-of-actinic-enteritis-in-rats-using-a-cobalt-60-open-source-and-a-protection-device-as-a-collimator
#20
Vinicius Rodrigues Taranto Nunes, Paula Vieira Teixeira Vidigal, Márcio Tadeu Pereira, Luís Carlos Duarte Ladeira, Rafael Calvão Barbuto, Ivana Duval-Araujo
Purpose: To describe a new model of actinic enteritis that does not use radiotherapy machines. Methods: Sixteen Wistar rats were divided into four groups, consisting of four animals each: control (group A), two weeks after irradiation (group B), five weeks after irradiation (group C) and eight weeks after irradiation (group D). Animals were given a 10Gy radiation from a Cobalt-60 natural source in a nuclear technology research center. Protections of the surrounding tissues were obtained through the usage of plumb devices with a hole in the center, which served as a collimator...
April 2017: Acta Cirúrgica Brasileira
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