Read by QxMD icon Read

Radiation-induced malignancy

Antonella Conforti, Nadia Starc, Simone Biagini, Luigi Tomao, Angela Pitisci, Mattia Algeri, Pietro Sirleto, Antonio Novelli, Giulia Grisendi, Olivia Candini, Cintia Carella, Massimo Dominici, Franco Locatelli, Maria Ester Bernardo
The risk of malignant transformation of ex-vivo expanded human mesenchymal stromal cells (huMSCs) has been debated in the last years; however, the biosafety of these cells after exposure to supramaximal physical and chemical stress has never been systematically investigated.We established an experimental in vitro model to induce supramaximal physical (ionizing radiation, IR) and chemical (starvation) stress on ex-vivo expanded bone marrow (BM)-derived huMSCs and investigated their propensity to undergo malignant transformation...
October 15, 2016: Oncotarget
Viviane B L Torres, Juliana Vassalo, Ulysses V A Silva, Pedro Caruso, André P Torelly, Eliezer Silva, José M M Teles, Marcos Knibel, Ederlon Rezende, José J S Netto, Claudio Piras, Luciano C P Azevedo, Fernando A Bozza, Nelson Spector, Jorge I F Salluh, Marcio Soares
INTRODUCTION: Cancer patients are at risk for severe complications related to the underlying malignancy or its treatment and, therefore, usually require admission to intensive care units (ICU). Here, we evaluated the clinical characteristics and outcomes in this subgroup of patients. MATERIALS AND METHODS: Secondary analysis of two prospective cohorts of cancer patients admitted to ICUs. We used multivariable logistic regression to identify variables associated with hospital mortality...
2016: PloS One
Mohammad B Hossain, Rehnuma Shifat, David G Johnson, Mark T Bedford, Konrad R Gabrusiewicz, Nahir Cortes-Santiago, Xuemei Luo, Zhimin Lu, Ravesanker Ezhilarasan, Erik P Sulman, Hong Jiang, Shawn S C Li, Frederick F Lang, Jessica Tyler, Mien-Chie Hung, Juan Fueyo, Candelaria Gomez-Manzano
DNA repair pathways enable cancer cells to survive DNA damage induced after genotoxic therapies. Tyrosine kinase receptors (TKRs) have been reported as regulators of the DNA repair machinery. TIE2 is a TKR overexpressed in human gliomas at levels that correlate with the degree of increasing malignancy. Following ionizing radiation, TIE2 translocates to the nucleus, conferring cells with an enhanced nonhomologous end-joining mechanism of DNA repair that results in a radioresistant phenotype. Nuclear TIE2 binds to key components of DNA repair and phosphorylates H4 at tyrosine 51, which, in turn, is recognized by the proto-oncogene ABL1, indicating a role for nuclear TIE2 as a sensor for genotoxic stress by action as a histone modifier...
April 2016: Science Advances
Samuel Kim, Richard L Edelson, Brandon Sumpio, Stephanie Kwei, Deepak Narayan
We present a case of a 65-year-old man with cutaneous T-cell lymphoma treated with radiation therapy and an allogeneic hematopoietic stem cell transplant from his human leukocyte antigen-matched brother. Engraftment was successful, but the patient went on to develop painful, radiation-induced ulcers. The ulcers were fat-allografted using liposuctioned fat from his brother because of the patient's unique chimeric state. Postprocedure follow-up revealed epithelialization of the ulcer sites and significant improvement in neuropathic pain...
September 2016: Plastic and Reconstructive Surgery. Global Open
Pier P Bassareo, Ines Monte, Claudia Romano, Martino Deidda, Alessandra Piras, Lucia Cugusi, Carmela Coppola, Francesca Galletta, Giuseppe Mercuro
Notwithstanding the steady progress in survival rates of children and adolescents suffering from cancer, the benefits associated with chemotherapy do not come without risks involving multiple organs and systems, including the cardiovascular apparatus. Anthracyclines-often administered in combination with radiation therapy and/or surgery-are the most used chemotherapeutic compounds in order to treat tumours and blood malignancies even in paediatric age. Being an important side-effect of anthracyclines, carduitoxicity may limit their efficacy during the treatment and induce long-term sequelae, observed even many years after therapy completion...
May 2016: Journal of Cardiovascular Medicine
Žakula Jelena, Korićanac Lela, Keta Otilija, Todorović Danijela, A P Cirrone Giuseppe, Romano Francesco, Cuttone Giacomo, Petrović Ivan, Ristić-Fira Aleksandra
BACKGROUND & OBJECTIVES: The main goal when treating malignancies with radiation is to deprive tumour cells of their reproductive potential. One approach is to induce tumour cell apoptosis. This study was conducted to evaluate the ability of carbon ions ( [12] C) to induce apoptosis and cell cycle arrest in human HTB140 melanoma cells. METHODS: In this in vitro study, human melanoma HTB140 cells were irradiated with the 62 MeV/n carbon ( [12] C) ion beam, having two different linear energy transfer (LET) values: 197 and 382 keV/μm...
May 2016: Indian Journal of Medical Research
Eugene J Vaios, Brian V Nahed, Alona Muzikansky, Amir T Fathi, Jorg Dietrich
OBJECTIVE Glioblastoma (GBM) is a highly aggressive malignancy that requires a multidisciplinary therapeutic approach of surgery, chemotherapy, and radiation therapy, but therapy is frequently limited by side effects. The most common adverse effect of chemotherapy with temozolomide (TMZ) is myelosuppression. It remains unclear whether the degree of bone-marrow suppression might serve as a biomarker for treatment outcome. The aim of the current study was to investigate whether the degree of bone-marrow toxicity in patients treated with TMZ correlates with overall survival (OS) and MRI-based time to progression (progression-free survival [PFS])...
October 14, 2016: Journal of Neurosurgery
Yuichiro Matsuoka, Hideki Nakayama, Ryoji Yoshida, Akiyuki Hirosue, Masashi Nagata, Takuya Tanaka, Kenta Kawahara, Junki Sakata, Hidetaka Arita, Hikaru Nakashima, Satoru Shinriki, Daiki Fukuma, Hidenao Ogi, Akimitsu Hiraki, Masanori Shinohara, Ryo Toya, Ryuji Murakami
BACKGROUND: In promoting tumour malignancy IL-6 signalling is considered to have an important role. However, the biological roles of IL-6 on radiosensitivity in oral squamous cell carcinoma (OSCC) remain largely unclear. The objective of this study is to determine the effects and molecular mechanisms of IL-6 on radiosensitivity in OSCC. METHODS: Two OSCC cell lines, and OSCC tissue samples with radioresistant cells were used. We examined the effects of IL-6, or tocilizumab, a humanised anti-human IL-6 receptor antibody, or both on radiosensitivity and DNA damage after X-ray irradiation in vitro...
October 13, 2016: British Journal of Cancer
Michele M Kim, Rozhin Penjweini, Xing Liang, Timothy C Zhu
Photodynamic therapy (PDT) is an effective non-ionizing treatment modality that is currently being used for various malignant and non-malignant diseases. In type II PDT with photosensitizers such as benzoporphyrin monoacid ring A (BPD), cell death is based on the creation of singlet oxygen ((1)O2). With a previously proposed empirical five-parameter macroscopic model, the threshold dose of singlet oxygen ([(1)O2]rx,sh]) to cause tissue necrosis in tumors treated with PDT was determined along with a range of the magnitude of the relevant photochemical parameters: the photochemical oxygen consumption rate per light fluence rate and photosensitizer concentration (ξ), the probability ratio of (1)O2 to react with ground state photosensitizer compared to a cellular target (σ), the ratio of the monomolecular decay rate of the triplet state photosensitizer (β), the low photosensitizer concentration correction factor (δ), and the macroscopic maximum oxygen supply rate (g)...
September 23, 2016: Journal of Photochemistry and Photobiology. B, Biology
Thomas Altmann, Andrew R Gennery
DNA ligase IV deficiency is a rare primary immunodeficiency, LIG4 syndrome, often associated with other systemic features. DNA ligase IV is part of the non-homologous end joining mechanism, required to repair DNA double stranded breaks. Ubiquitously expressed, it is required to prevent mutagenesis and apoptosis, which can result from DNA double strand breakage caused by intracellular events such as DNA replication and meiosis or extracellular events including damage by reactive oxygen species and ionising radiation...
October 7, 2016: Orphanet Journal of Rare Diseases
Antony George Francis Thottian, Rony Benson, Seema Kashyap, K P Haresh, Subhash Gupta, Dayanand Sharma, Goura Kishor Rath
Second cancers in survivors of hereditary retinoblastoma occur much more commonly than in the general population. This can be attributed both to the germline mutation of the RB gene and chemoradiation used for treatment of this paediatric cancer. Medulloepithelioma is an uncommon tumor of neuroectodermal origin, seen largely in the paediatric population and rarely reported in adults. Though the incidence of second malignancies is common in retinoblastoma, medulloepithelioma as a second malignancy in retinoblastoma survivors is rare, with only one case reported so far...
August 12, 2016: Orbit
Kit I Tong, Kazushige Ota, Akiyoshi Komuro, Takeshi Ueda, Akihiko Ito, C Anne Koch, Hitoshi Okada
Therapy-related cancers are potentially fatal late life complications for patients who received radio- or chemotherapy. So far, the mouse model showing reduction or delay of these diseases has not been described. We found that the disruption of Aplf in mice moderately attenuated DNA damage repair and, unexpectedly, impeded myeloid neoplasms after exposure to ionizing radiation (IR). Irradiated mutant mice showed higher rates of p53-dependent cell death, fewer chromosomal translocations, and a delay in malignancy-induce;/- mice...
October 6, 2016: Cell Death & Disease
Ryuya Yamanaka, Azusa Hayano, Tomohiko Kanayama
By conducting a systemic search of the PubMed database, we performed a comprehensive literature review to characterize secondary gliomas following radiotherapy treatment and to determine the most appropriate treatment strategy. Our analysis included 296 cases of radiation-induced gliomas. The primary lesion was characterized as a hematological malignancy in 104 cases (35.1 %), pituitary adenoma in 35 (11.8 %), craniopharyngioma in 19 (6.4 %), medulloblastoma in 38 (12.8 %), germ cell tumor in 13 (4.3 %), low-grade glioma in 28 (9...
October 5, 2016: Neurosurgical Review
Wen-Juan Huang, Wei-Wei Chen, Xia Zhang
Central nervous system-based cancers have a much higher mortality rate with the 2016 estimates at 6.4 for incidence and 4.3 for deaths per 100,000 individuals. Grade IV astrocytomas, known as glioblastomas are highly aggressive and show a high proliferation index, diffused infiltration, angiogenesis, microvascular proliferation and pleomorphic vessels, resistance to apoptosis, and pseudopalisading necrosis. Extensive hypoxic regions in glioblastomas contribute to the highly malignant phenotype of these tumors...
October 2016: Oncology Letters
Fernanda Antunes, Marco Corazzari, Gustavo Pereira, Gian Maria Fimia, Mauro Piacentini, Soraya Smaili
Melanoma is one of leading cause of tumor death worldwide. Anti-cancer strategy includes combination of different chemo-therapeutic agents as well as radiation; however these treatments have limited efficacy and induce significant toxic effects on healthy cells. One of most promising novel therapeutic approach to cancer therapy is the combination of anti-cancer drugs with calorie restriction. Here we investigated the effect Cisplatin (CDDP), one of the most potent chemotherapeutic agent used to treat tumors, in association with fasting in wild type and mutated BRAF(V600E) melanoma cell lines...
September 29, 2016: Biochemical and Biophysical Research Communications
Konstantin Tamarov, Wujun Xu, Liubov Osminkina, Sergey Zinovyev, Pasi Soininen, Andrey Kudryavtsev, Maxim Gongalsky, Azha Gaydarova, Ale Närvänen, Victor Timoshenko, Vesa-Pekka Lehto
: One critical functionality of the carrier system utilized in targeted drug delivery is its ability to trigger the release of the therapeutic cargo once the carrier has reached its target. External triggering is an alluring approach as it can be applied in a precise spatiotemporal manner. In the present study, we achieved external triggering through the porous silicon (PSi) nanoparticles (NPs) by providing a pulse of infrared or radiofrequency radiation. The NPs were grafted with a temperature responsive polymer whose critical temperature was tailored to be slightly above 37°C...
November 10, 2016: Journal of Controlled Release: Official Journal of the Controlled Release Society
Kan Yonemori, Akihiro Hirakawa, Asuka Kawachi, Fumie Kinoshita, Hitomi Ohkuma, Tadaaki Nishikawa, Tamura Kenji, Yasuhiro Fujiwara, Naoko Takebe
Interstitial lung disease is a serious drug related condition that can cause life threatening organ failure. The incidence and risk factors of drug-induced interstitial lung disease (DILD) is unknown in oncology phase I trials. This study analyzed clinical information from 8,906 patients with malignancies who were enrolled in 470 phase I trials sponsored by the Cancer Therapy Evaluation Program, National Cancer Institute, from 1988 to 2014. Logistic and Cox statistical analyses were utilized to determine clinical differences between patients who developed DILD and patients who did not...
September 29, 2016: Cancer Science
Boram Lee, Sung Hwan Ahn, Hyeyoung Kim, Jaeman Son, Jiwon Sung, Youngyih Han, Seung Jae Huh, Jin Sung Kim, Dong Wook Kim, Myonggeun Yoon
This study was designed to estimate radiation-induced secondary cancer risks from high-dose-rate (HDR) brachytherapy and external radiotherapy for patients with cervical cancer based on measurements of doses absorbed by various organs. Organ doses from HDR brachytherapy and external radiotherapy were measured using glass rod dosimeters. Doses to out-of-field organs were measured at various loca-tions inside an anthropomorphic phantom. Brachytherapy-associated organ doses were measured using a specialized phantom that enabled applicator insertion, with the pelvis portion of the existing anthropomorphic phantom replaced by this new phantom...
2016: Journal of Applied Clinical Medical Physics
Amy Sherborne, Vincent Lavergne, Katharine Yu, Leah Lee, Philip Davidson, Tali Mazor, Ivan V Smirnov, Andrew E Horvai, Mignon Loh, Steven G Dubois, Robert Goldsby, Joseph P Neglia, Sue Hammond, Leslie L Robison, Rosanna Wustrack, Joseph F Costello, Alice Nakamura, Kevin M Shannon, Smita Bhatia, Jean L Nakamura
PURPOSE: Second malignant neoplasms (SMNs) are severe late complications that occur in pediatric cancer survivors exposed to radiotherapy and other genotoxic treatments. To characterize the mutational landscape of treatment-induced sarcomas and to identify candidate SMN-predisposing variants we analyzed germline and SMN tumor samples from pediatric cancer survivors. EXPERIMENTAL DESIGN: We performed whole exome sequencing (WES) and RNA sequencing on radiation-induced sarcomas arising from two pediatric cancer survivors...
September 28, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
Jeffrey Meyer
Management of primary and secondary tumors of the liver is a complex undertaking involving multi- disciplinary input. Radiation therapy has held a minor role in the treatment of liver tumors, but with technological innovations and the growth of the field of stereotactic body radiation therapy (SBRT), this role is evolving. In this review, I discuss the issues of radiation-induced hepatic toxicity, the planning of liver SBRT treatments, clinical results with SBRT, its place amongst other non-surgical ablative treatments, and potential future avenues of investigation...
September 28, 2016: Minerva Gastroenterologica e Dietologica
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"