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https://www.readbyqxmd.com/read/28130353/gene-expression-profiles-among-murine-strains-segregate-with-distinct-differences-in-the-progression-of-radiation-induced-lung-disease
#1
Isabel L Jackson, Fitsum Baye, Chirayu P Goswami, Barry P Katz, Andrew Zodda, Radmila Pavlovic, Ganga Gurung, Don Winans, Zeljko Vujaskovic
Molecular mechanisms underlying development of acute pneumonitis and/or late fibrosis following thoracic irradiation remain poorly understood. Here we hypothesize that heterogeneity in disease progression and phenotypic expression of radiation-induced lung disease (RILD) across murine strains presents an opportunity to better elucidate mechanisms driving tissue response toward pneumonitis and/or fibrosis. In this study distinct differences in disease progression were observed in age- and sex-matched CBA/J, C57L/J, and C57BL/6J mice over 1 y after graded doses of whole-thorax lung irradiation (WTLI)...
January 26, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28123916/stereotactic-body-radiotherapy-for-inoperable-liver-tumors-results-of-a-single-institutional-experience
#2
Hussam Hijazi, Marie-Pierre Campeau, David Roberge, David Donath, Real Lapointe, Franck Vandenbroucke-Menu, Daniel Taussky, Karim Boudam, Gabriel Chan, Alexis Bujold, Guila Delouya
OBJECTIVES: Stereotactic body radiation therapy (SBRT) is an emerging treatment option for liver tumors unsuitable for ablation or surgery. We report our experience with SBRT in the treatment of liver tumors. MATERIALS AND METHODS: Patients with primary or secondary liver cancer were identified in our local SBRT database. Patients were included irrespective of prior liver-directed therapies. The primary endpoint of our review was in-field local control (LC). Secondary endpoints were progression-free survival (PFS), overall survival (OS), and toxicity...
December 20, 2016: Curēus
https://www.readbyqxmd.com/read/28086942/external-beam-radiotherapy-for-unresectable-hepatocellular-carcinoma-an-international-multicenter-phase-i-trial-sakk-77-07-and-sasl-26
#3
Evelyn Herrmann, Diana Naehrig, Manfred Sassowsky, Martin Bigler, Jeroen Buijsen, Ilja Ciernik, Daniel Zwahlen, Alessandra Franzetti Pellanda, Andreas Meister, Peter Brauchli, Simona Berardi, Erika Kuettel, Jean-François Dufour, Daniel M Aebersold
PURPOSE: To assess feasibility and safety of conventionally fractionated radiotherapy (cfRT) in patients with hepatocellular carcinoma (HCC). METHODS: Patients with histologically confirmed stage cT1-4, cN0-1 HCC and Child-Pugh Score (CPS) A or B disease were included in a phase I multicenter trial. Metastatic HCC were allowed if ≥90% of total tumor volume was located within the liver. Patients were enrolled onto five dose-escalation levels (54-70Gy in 2Gy fractions) based on a modified 3 + 3 design, with cohorts of five patients instead of three patients in dose levels 4 and 5...
January 13, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28047582/su-g-206-16-investigation-of-dosimetric-consequence-via-cone-beam-ct-based-dose-reconstruction-in-hepatocellular-carcinoma-radiotherapy
#4
P Huang, H Li, J Chen, C Ma, Y Gang, S Qin, Y Yin, D Li
PURPOSE: Many patients with technically unresectable or medically inoperable hepatocellular carcinoma (HCC) had hepatic dosimetric variations as a result of inter-fraction anatomical deformation. This study was conducted to assess the hepatic dosimetric consequences via reconstructing weekly dose in HCC patients receiving three dimensional conformal radiation therapy. METHODS: Twenty-one HCC patients with 21 planning CT (pCT) scans and 63 weekly Cone-beam CT (CBCT) scans were enrolled in this investigation...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047564/su-f-j-221-adjusted-dose-and-its-relation-to-radiation-induced-liver-disease-during-hepatocellular-carcinoma-radiotherapy
#5
P Huang, H Li, J Chen, C Ma, Y Gang, S Qin, Y Yin, D Li
PURPOSE: Many patients with hepatocellular carcinoma (HCC) had hepatic anatomy variations as a result of inter-fraction deformation during fractionated radiotherapy, which may result in difference from the planned dose. This study aimed to investigate the relationship between adjusted dose and radiation induced liver disease (RILD) in HCC patients receiving three dimensional conformal radiotherapy (3DCRT). METHODS: Twenty-three HCC patients received conventional fractionated 3DCRT were enrolled in this retrospective investigation...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047463/su-f-t-103-analysis-of-hepatitis-b-virus-reactivation-after-conformal-radiotherapy-in-patients-with-hepatocellular-carcinoma-using-the-lyman-ntcp-model
#6
Z Li, W Huang, H Li, B Li
PURPOSE: The aim of this research was to investigate the feasibility of Lyman-Kutcher-Burman (LKB) normal tissue complication probability (NTCP) model in analyzing hepatitis B virus (HBV) reactivation in patients receiving conformal radiotherapy for patients with hepatocellular carcinoma (HCC). METHODS: Between June 2009 and June 2012, 108 HBV-related HCC patients (90 were specifically selected and 18 patients were excluded) treated with conformal RT at three centers were enrolled in this retrospective study...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/27855416/hedgehog-signaling-is-associated-with-liver-response-to-fractionated-irradiation-in-mice
#7
Jieun Kim, Sihyung Wang, Jeongeun Hyun, Cynthia D Guy, Youngmi Jung
BACKGROUND/AIMS: Radiation-induced liver disease (RILD) is a major obstacle in treating liver cancer; however, the mechanisms underlying RILD development remain unclear. Hedgehog (Hh) orchestrates liver response to injury. Herein, we investigated the liver response with Hh to fractionated irradiation (FI) using a small murine model for RILD. METHODS: Male mice exposed to liver-targeted FI with 6Gy in 5 consecutive weekly fractions were sacrificed at one day after weekly irradiation and 6 or 10 weeks post 5th FI for the acute and late response model, respectively...
2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27733321/human-hepatocytes-loaded-in-3d-bioprinting-generate-mini-liver
#8
Cheng Zhong, Hai-Yang Xie, Lin Zhou, Xiao Xu, Shu-Sen Zheng
BACKGROUND: Because of an increasing discrepancy between the number of potential liver graft recipients and the number of organs available, scientists are trying to create artificial liver to mimic normal liver function and therefore, to support the patient's liver when in dysfunction. 3D printing technique meets this purpose. The present study was to test the feasibility of 3D hydrogel scaffolds for liver engineering. METHODS: We fabricated 3D hydrogel scaffolds with a bioprinter...
October 2016: Hepatobiliary & Pancreatic Diseases International: HBPD INT
https://www.readbyqxmd.com/read/27567554/imaging-after-radiation-therapy-of-thoracic-tumors
#9
B Ghaye, M Wanet, M El Hajjam
Radiation-induced lung disease (RILD) is frequent after therapeutic irradiation of thoracic malignancies. Many technique-, treatment-, tumor- and patient-related factors influence the degree of injury sustained by the lung after irradiation. Based on the time interval after the completion of the treatment RILD presents as early and late features characterized by inflammatory and fibrotic changes, respectively. They are usually confined to the radiation port. Though the typical pattern of RILD is easily recognized after conventional two-dimensional radiation therapy (RT), RILD may present with atypical patterns after more recent types of three- or four-dimensional RT treatment...
October 2016: Diagnostic and Interventional Imaging
https://www.readbyqxmd.com/read/27566894/stereotactic-body-radiotherapy-for-primary-hepatic-malignancies-report-of-a-phase-i-ii-institutional-study
#10
Ashley A Weiner, Jeffrey Olsen, Daniel Ma, Pawel Dyk, Todd DeWees, Robert J Myerson, Parag Parikh
BACKGROUND AND PURPOSE: To report outcomes and toxicities of a single-institution phase I/II study of stereotactic body radiotherapy (SBRT) in the treatment of unresectable hepatocellular cancer (HCC) and intrahepatic cholangiocarcinoma (IHC). MATERIALS AND METHODS: Patients with Child-Pugh score less than 8 were eligible. A total of 32 lesions in 26 patients were treated with SBRT. Kaplan-Meier survival analysis was performed. Toxicities were graded by CTCAEv4 criteria and response was scored by EASL guidelines...
August 23, 2016: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/27511851/a-voxel-based-approach-to-explore-local-dose-differences-associated-with-radiation-induced-lung-damage
#11
Giuseppe Palma, Serena Monti, Vittoria D'Avino, Manuel Conson, Raffaele Liuzzi, Maria Cristina Pressello, Vittorio Donato, Joseph O Deasy, Mario Quarantelli, Roberto Pacelli, Laura Cella
PURPOSE: To apply a voxel-based (VB) approach aimed at exploring local dose differences associated with late radiation-induced lung damage (RILD). METHODS AND MATERIALS: An interinstitutional database of 98 patients who were Hodgkin lymphoma (HL) survivors treated with postchemotherapy supradiaphragmatic radiation therapy was analyzed in the study. Eighteen patients experienced late RILD, classified according to the Radiation Therapy Oncology Group scoring system...
September 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27447803/stereotactic-ablative-radiation-therapy-prior-to-liver-transplantation-in-hepatocellular-carcinoma
#12
Alessia Guarneri, Pierfrancesco Franco, Renato Romagnoli, Elisabetta Trino, Stefano Mirabella, Luca Molinaro, Giorgia Rizza, Andrea Riccardo Filippi, Patrizia Carucci, Mauro Salizzoni, Umberto Ricardi
OBJECTIVE: Stereotactic ablative radiotherapy (SABR) is a safe treatment approach for hepatocellular carcinoma (HCC) with comparable effectiveness to other local therapies. Only scant information is available concerning the role of SABR prior to liver transplantation (LT) for HCC. We present a consecutive case series investigating the role of SABR as a bridge or downstaging option in HCC patients subsequently submitted to LT. MATERIALS AND METHODS: Between September 2012 and May 2014, 8 patients for a total of 13 lesions underwent SABR prior to LT...
November 2016: La Radiologia Medica
https://www.readbyqxmd.com/read/27370150/a-mouse-radiation-induced-liver-disease-model-for-stereotactic-body-radiation-therapy-validated-in-patients-with-hepatocellular-carcinoma
#13
Zhi-Feng Wu, Jian-Ying Zhang, Xiao-Yun Shen, Le-Yuan Zhou, Ya-Bo Gao, Yong Hu, Zhao-Chong Zeng
PURPOSE: Lower radiation tolerance of the whole liver hinders dose escalations of stereotactic body radiation therapy (SBRT) in hepatocellular carcinoma (HCC) treatment. This study was conducted to define the exact doses that result in radiation-induced liver disease (RILD) as well as to determine dose constraints for the critical organs at risk (OARs) in mice; these parameters are still undefined in HCC SBRT. METHODS: This study consisted of two phases. In the primary phase, mice treated with helical tomotherapy-based SBRT were stratified according to escalating radiation doses to the livers...
July 2016: Medical Physics
https://www.readbyqxmd.com/read/27369241/clinical-parameters-for-predicting-radiation-induced-liver-disease-after-intrahepatic-reirradiation-for-hepatocellular-carcinoma
#14
Yaoru Huang, Shang-Wen Chen, Ching-Chao Fan, Lai-Lei Ting, Chia-Chun Kuo, Jeng-Fong Chiou
BACKGROUND: Few data are available on the tolerance of reirradiation in patients with hepatocellular carcinoma (HCC). This study determined the clinical parameters contributing to the development of radiation-induced liver disease (RILD). METHODS: We included 36 patients with HCC who received 2 courses of radiotherapy (RT) to the liver. Using α/β = 15 for tumor and α/β =8 for normal liver tissue for biologically equivalent doses in 2 Gy fractions, mean cumulative to the hepatic tumor and normal liver were 87...
July 2, 2016: Radiation Oncology
https://www.readbyqxmd.com/read/26994825/linac-based-extracranial-radiosurgery-with-elekta-volumetric-modulated-arc-therapy-and-an-anatomy-based-treatment-planning-system-feasibility-and-initial-experience
#15
Savino Cilla, Francesco Deodato, Gabriella Macchia, Cinzia Digesù, Anna Ianiro, Pietro Viola, Maurizio Craus, Vincenzo Valentini, Angelo Piermattei, Alessio G Morganti
We reported our initial experience in using Elekta volumetric modulated arc therapy (VMAT) and an anatomy-based treatment planning system (TPS) for single high-dose radiosurgery (SRS-VMAT) of liver metastases. This study included a cohort of 12 patients treated with a 26-Gy single fraction. Single-arc VMAT plans were generated with Ergo++ TPS. The prescription isodose surface (IDS) was selected to fulfill the 2 following criteria: 95% of planning target volume (PTV) reached 100% of the prescription dose and 99% of PTV reached a minimum of 90% of prescription dose...
2016: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/26991967/the-spectrophotometrical-analysis-of-rhododendrol-induced-leucoderma-using-a-novel-multispectral-camera
#16
M Inoue, K Kikuchi, A Watabe, K Yamasaki, S Aiba
BACKGROUND: Many users in Japan of skin brightening/lightening cosmetics containing rhododendrol (RD) have developed leucoderma. Leucoderma appears on skin areas repeatedly treated with RD-containing cosmetics. RD-induced leucoderma (RDIL) presents different degrees of well-defined hypopigmentation. It is crucial to determine the degree of hypopigmentation to differentiate RDIL from vitiligo vulgaris (VV). OBJECTIVES: To quantitatively evaluate hypopigmentation of RDIL lesions and the recovery of pigmentation, and to compare the hypopigmentation with VV and normal skin...
August 2016: British Journal of Dermatology
https://www.readbyqxmd.com/read/26878669/metabolic-liver-function-after-stereotactic-body-radiation-therapy-for-hepatocellular-carcinoma
#17
Constantin Dreher, Katrine I Høyer, Mette Marie Fode, Daniel Habermehl, Stephanie E Combs, Morten Høyer
Purpose The time course of changes of the liver function after stereotactic body radiotherapy (SBRT) was analyzed in patients treated for non-resectable hepatocellular carcinoma (HCC). Patients and methods Twenty-six patients with non-resectable HCC treated with SBRT were included in this study. Clinical, biochemical and treatment-related parameters were retrospectively collected. S-albumin, s-bilirubin, s-alkaline phosphatase (AP) and s-alanine transaminase (ALAT) at 0, 3, 6, and 12 months after radiotherapy were analyzed...
July 2016: Acta Oncologica
https://www.readbyqxmd.com/read/26700710/decreasing-irradiated-rat-lung-volume-changes-dose-limiting-toxicity-from-early-to-late-effects
#18
Sonja J van der Veen, Hette Faber, Ghazaleh Ghobadi, Sytze Brandenburg, Johannes A Langendijk, Robert P Coppes, Peter van Luijk
PURPOSE: Technological developments in radiation therapy result in smaller irradiated volumes of normal tissue. Because the risk of radiation therapy-induced toxicity generally depends on irradiated volume, changing volume could change the dose-limiting toxicity of a treatment. Recently, in our rat model, we found that early radiation-induced lung dysfunction (RILD) was closely related to irradiated volume dependent vascular remodeling besides inflammation. The exact relationship between early and late RILD is still unknown...
January 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/26399389/quantification-of-ct-assessed-radiation-induced-lung-damage-in-lung-cancer-patients-treated-with-or-without-chemotherapy-and-cetuximab
#19
Hoda Sharifi, Wouter van Elmpt, Cary Oberije, Georgi Nalbantov, Marco Das, Michel Öllers, Philippe Lambin, Anne-Marie C Dingmans, Dirk De Ruysscher
BACKGROUND AND PURPOSE: Prediction models for radiation-induced lung damage (RILD) are still unsatisfactory, with clinical toxicity endpoints that are difficult to quantify objectively. We therefore evaluated RILD more objectively, quantitatively and on a continuous scale measuring the lung tissue density changes per voxel. MATERIAL AND METHODS: Patients treated with radiotherapy (RT) alone, sequential and concurrent chemo-RT with and without the addition of cetuximab were studied...
2016: Acta Oncologica
https://www.readbyqxmd.com/read/26300327/radiation-induced-liver-disease-a-clinical-update
#20
REVIEW
R Benson, R Madan, R Kilambi, S Chander
Radiation-induced liver disease (RILD) or radiation hepatitis is a sub-acute form of liver injury due to radiation. It is one of the most dreaded complications of radiation which prevents radiation dose escalation and re-irradiation for hepatobiliary or upper gastrointestinal malignancies. This complication should be kept in mind whenever a patient is planned for irradiation of these malignancies. Although, incidence of RILD is decreasing due to better knowledge of liver tolerance, improved investigation modalities and modern radiation delivery techniques, treatment options are still limited...
March 2016: Journal of the Egyptian National Cancer Institute
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