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https://www.readbyqxmd.com/read/27855416/hedgehog-signaling-is-associated-with-liver-response-to-fractionated-irradiation-in-mice
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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...
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
https://www.readbyqxmd.com/read/26291715/radiation-induced-liver-injury-in-three-dimensional-conformal-radiation-therapy-3d-crt-for-postoperative-or-locoregional-recurrent-gastric-cancer-risk-factors-and-dose-limitations
#15
Guichao Li, Jiazhou Wang, Weigang Hu, Zhen Zhang
PURPOSE: This study examined the status of radiation-induced liver injury in adjuvant or palliative gastric cancer radiation therapy (RT), identified risk factors of radiation-induced liver injury in gastric cancer RT, analysed the dose-volume effects of liver injury, and developed a liver dose limitation reference for gastric cancer RT. METHODS AND MATERIALS: Data for 56 post-operative gastric cancer patients and 6 locoregional recurrent gastric cancer patients treated with three-dimensional conformal radiation therapy (3D-CRT) or intensity-modulated radiation therapy (IMRT) from Sep 2007 to Sep 2009 were analysed...
2015: PloS One
https://www.readbyqxmd.com/read/26224253/efficacy-of-multilayered-hepatocyte-sheet-transplantation-for-radiation-induced-liver-damage-and-partial-hepatectomy-in-a-rat-model
#16
Zhassulan Baimakhanov, Kosho Yamanouchi, Yusuke Sakai, Makiko Koike, Akihiko Soyama, Masaaki Hidaka, Mitsuhisa Takatsuki, Fumihiko Fujita, Kengo Kanetaka, Tamotsu Kuroki, Susumu Eguchi
Although cell sheet technology has recently been developed for use in both animal experiments and in the clinical setting, it remains unclear whether transplanted hepatocyte sheets improve the liver function in vivo. Radiation-induced liver damage (RILD) combined with partial hepatectomy (PH) has been reported to suppress the proliferation of host hepatocytes and induce critical liver failure. The aim of this study was to improve the liver function in the above-mentioned diseased rat model (RILD + PH) using multilayered hepatocyte sheet transplantation...
2016: Cell Transplantation
https://www.readbyqxmd.com/read/26202634/hedgehog-signaling-and-radiation-induced-liver-injury-a-delicate-balance
#17
Rafi Kabarriti, Chandan Guha
Radiation-induced liver disease (RILD) is a major limitation of radiation therapy (RT) for the treatment of liver cancer. Emerging data indicate that hedgehog (Hh) signaling plays a central role in liver fibrosis and regeneration after liver injury. Here, we review the potential role of Hh signaling in RILD and propose the temporary use of Hh inhibition during liver RT to radiosensitize HCC tumor cells and inhibit their progression, while blocking the initiation of the radiation-induced fibrotic response in the surrounding normal liver...
July 2014: Hepatology International
https://www.readbyqxmd.com/read/26200842/mesenchymal-stem-cells-adopt-lung-cell-phenotype-in-normal-and-radiation-induced-lung-injury-conditions
#18
Ola M Maria, Ahmed M Maria, Norma Ybarra, Krishinima Jeyaseelan, Sangkyu Lee, Jessica Perez, Mostafa Y Shalaby, Shirley Lehnert, Sergio Faria, Monica Serban, Jan Seuntjens, Issam El Naqa
Lung tissue exposure to ionizing irradiation can invariably occur during the treatment of a variety of cancers leading to increased risk of radiation-induced lung disease (RILD). Mesenchymal stem cells (MSCs) possess the potential to differentiate into epithelial cells. However, cell culture methods of primary type II pneumocytes are slow and cannot provide a sufficient number of cells to regenerate damaged lungs. Moreover, effects of ablative radiation doses on the ability of MSCs to differentiate in vitro into lung cells have not been investigated yet...
April 2016: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/26046990/integrative-metabolic-signatures-for-hepatic-radiation-injury
#19
Irwin Jack Kurland, Pilib Ó Broin, Aaron Golden, Gang Su, Fan Meng, Laibin Liu, Robert Mohney, Shilpa Kulkarni, Chandan Guha
BACKGROUND: Radiation-induced liver disease (RILD) is a dose-limiting factor in curative radiation therapy (RT) for liver cancers, making early detection of radiation-associated liver injury absolutely essential for medical intervention. A metabolomic approach was used to determine metabolic signatures that could serve as biomarkers for early detection of RILD in mice. METHODS: Anesthetized C57BL/6 mice received 0, 10 or 50 Gy Whole Liver Irradiation (WLI) and were contrasted to mice, which received 10 Gy whole body irradiation (WBI)...
2015: PloS One
https://www.readbyqxmd.com/read/26029465/functional-imaging-of-radiation-liver-injury-in-a-liver-metastasis-patient-imaging-and-pathologic-correlation
#20
Tobias R Chapman, Asangi R Kumarapeli, Matthew J Nyflot, Stephen R Bowen, Raymond S Yeung, Hubert J Vesselle, Matthew M Yeh, Smith Apisarnthanarax
BACKGROUND: Radiation therapy (RT) is increasingly being utilized as a treatment modality for the treatment of primary and metastatic liver malignancies. Accurate assessment of liver function and prediction of radiation induced liver disease (RILD) remains a challenge with conventional laboratory tests and imaging. Imaging-pathology correlation of hepatic injury after RT has been described with computer tomography (CT) imaging that depicts perfusion changes. However, these imaging changes may not directly characterize the functional capacity of the liver...
June 2015: Journal of Gastrointestinal Oncology
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