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https://www.readbyqxmd.com/read/28643452/emerging-nanotechnology-and-advanced-materials-for-cancer-radiation-therapy
#1
REVIEW
Guosheng Song, Liang Cheng, Yu Chao, Kai Yang, Zhuang Liu
Radiation therapy (RT) including external beam radiotherapy (EBRT) and internal radioisotope therapy (RIT) has been widely used for clinical cancer treatment. However, owing to the low radiation absorption of tumors, high doses of ionizing radiations are often needed during RT, leading to severe damages to normal tissues adjacent to tumors. Meanwhile, the RT efficacies are limited by different mechanisms, among which the tumor hypoxia-associated radiation resistance is a well-known one, as there exists hypoxia inside most solid tumors while oxygen is essential to enhance radiation-induced DNA damages...
June 23, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28641499/a-comprehensive-model-for-heat-induced-radio-sensitization
#2
Sarah Catharina Brüningk, Jannat Ijaz, Ian Rivens, Simeon Nill, Gail Ter Haar, Uwe Oelfke
Combined radiotherapy (RT) and hyperthermia (HT) treatments may improve treatment outcome by heat induced radio-sensitization. We propose an empirical cell survival model (AlphaR model) to describe this multimodality therapy. The model is motivated by the observation that heat induced radio-sensitization may be explained by a reduction in the DNA damage repair capacity of heated cells. We assume that this repair is only possible up to a threshold level above which survival will decrease exponentially with dose...
June 23, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/28621575/analysis-of-radio-sensitization-patents-in-china-from-2006-to-2015
#3
Guofeng He, Xiaoke Di, Xinchen Sun, Jingjing Yan, Shu Zhang
Radiotherapy is by means of ionizing radiation to kill tumor cells, inhibit and control the growth, metastasis and diffusion of tumor cells. During the last few decades, application of radiotherapy combined with chemotherapy and surgery are clinical mainstream treatments. However, little is known what radio-sensitization agents have been patented in China and what the potential drug candidates for patents are in China. Areas covered: This reviews covers research and patent literature of the last 10 years dealing with the discovery and development of novel radio-sensitization patents in China
...
June 16, 2017: Expert Opinion on Therapeutic Patents
https://www.readbyqxmd.com/read/28612110/differential-killing-and-radio-modifying-effects-of-iodoacetate-in-mammalian-normal-and-cancer-cells
#4
Usha Yadav, K B Anjaria, Rajesha Nairy, K B Shirsath, Utkarsha N Desai, Rajesh K Chaurasia, Nagesh N Bhat, B K Sapra
To explore possible applications of iodoacetate (IA), a glycolytic inhibitor, in cancer treatment, we screened its cytotoxicity and radioprotective/sensitizing efficacy in three different mammalian cell lines; A549 (human lung carcinoma), MCF7 (human mammary cancer), a non-cancerous CHO (Chinese hamster ovary) cells and human lymphocytes. Experiments were carried out using IA concentrations ranging from 0.01 to 2.5 µg/ml, with or without (60)Coγ-radiation. In the outcomes, IA was found to exhibit higher toxicity in the cancer cells, whereas it was non-toxic/marginally toxic to the non-cancerous cells...
June 13, 2017: Radiation and Environmental Biophysics
https://www.readbyqxmd.com/read/28610905/anal-cancer-french-intergroup-clinical-practice-guidelines-for-diagnosis-treatment-and-follow-up
#5
REVIEW
Laurence Moureau-Zabotto, Veronique Vendrely, Laurent Abramowitz, Christophe Borg, Eric Francois, Diane Goere, Florence Huguet, Didier Peiffert, Laurent Siproudhis, Michel Ducreux, Olivier Bouché
INTRODUCTION: This document is a summary of the French Intergroup guidelines regarding the management of anal carcinomas, published in November 2016. METHODS: It is a collaborative work produced under the auspices of the majority of the French medical societies involved in the management of anal cancer. It is based on the previous guidelines published in 2010. Recommendations are graded in three categories, according to the amount of evidence found in the literature...
May 23, 2017: Digestive and Liver Disease
https://www.readbyqxmd.com/read/28607886/managing-rhinophyma-by-trimodal-therapy-novel-approach
#6
K V Vishwas, Belliappa Pemmanda Raju, Umashankar Nagaraju
Rhinophyma is characterized by nodular thickening of the Nasal skin, sebaceous gland hyperplasia, dilated pores, and in its late stage, fibrosis. In severe cases, it results in loss of normal facial contours, significant disfigurement, and social isolation. Treatment options for severe rhinophyma include cryosurgery, partial-thickness decortications with subsequent secondary reepithelialisation, laser ablation, full thickness resection with graft or flap reconstruction, excision by electrocautery or radio frequency...
June 2017: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/28607208/targeting-eif4f-complex-in-non-small-cell-lung-cancer-cells
#7
REVIEW
Lu Dai, Zhen Lin, Yueyu Cao, Yihan Chen, Zengguang Xu, Zhiqiang Qin
Non-small cell lung cancer (NSCLC) accounts for about 85-90% of lung cancer cases, which represents the leading cause of cancer-related death in the world. The majority of lung cancer patients doesn't respond well to conventional chemo-/radio-therapeutic regimens and have a poor prognosis. The recent introduction of targeted therapy and immunotherapy gives new hopes to NSCLC patients, but their outcome/prognosis is far from satisfactory. The translation initiation EIF4F complex has been shown to play important roles in cancer progression, but its functional role and therapeutic effect in lung cancers especially NSCLC remain largely unknown...
June 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28602756/antrodia-cinnamomea-sensitizes-radio-chemo-therapy-of-cancer-stem-like-cells-by-modulating-microrna-expression
#8
Yu-Kai Su, Ping-Hsiao Shih, Wei-Hwa Lee, Oluwaseun Adebayo Bamodu, Alexander T H Wu, Chun-Chih Huang, Yew-Min Tzeng, Michael Hsiao, Chi-Tai Yeh, Chien-Min Lin
ETHNOPHARMACOLOGICAL RELEVANCE: The discovery of many tissue-specific cancer stem cells (CSCs) continues to attract scientific attention. These CSCs are considered to be associated with chemo- and radio-resistance, and consequently, failure of conventional anticancer therapies. The recent demonstration of several microRNAs as enhancers of tumorigenicity via modulation of epithelial-mesenchymal transition and cancer stemness, makes them putative novel therapeutic target in oncology. Antrodia cinnamomea is a Chinese traditional medicine with several biological functions including anti-inflammation, antioxidant, and cancer prevention...
June 8, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28602545/what-is-the-impact-of-neoadjuvant-chemoradiation-on-outcomes-in-gastro-intestinal-cancer
#9
C Mariette, A Brouquet, D Tzanis, A Laurenzi, A de la Rochefordière, P Mariani, G Piessen, A Sa Cunha, C Penna
Multimodal therapeutic strategies combining chemotherapy, radiation therapy and surgery have been shown to be feasible and to have a positive impact on outcomes by decreasing the risk of locoregional recurrence and often by increasing overall survival. The advantages of neoadjuvant chemo(radio)therapy include optimal tumor control combined with better tolerance and compliance to treatment while also increasing the number of candidates for surgery. Whereas indications for neoadjuvant therapy are increasing, its impact on surgical treatment and postoperative outcomes are not well-known...
June 8, 2017: Journal of Visceral Surgery
https://www.readbyqxmd.com/read/28582845/elevated-lactate-dehydrogenase-ldh-can-be-a-marker-of-immune-suppression-in-cancer-interplay-between-hematologic-and-solid-neoplastic-clones-and-their-microenvironments
#10
Jennifer Ding, Judith E Karp, Ashkan Emadi
Metabolism of neoplastic cells is shifted toward high glucose uptake and enhanced lactate production. Lactate dehydrogenase (LDH), which is comprised of two major subunits, LDH-A and LDH-B, reversibly catalyzes the conversion of pyruvate to lactate or lactate to pyruvate. LDH-A has a higher affinity for pyruvate and is a key enzyme in the glycolytic pathway. Elevated LDH is a negative prognostic biomarker not only because it is a key enzyme involved in cancer metabolism, but also because it allows neoplastic cells to suppress and evade the immune system by altering the tumor microenvironment...
May 19, 2017: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/28580979/design-of-tpgs-functionalized-cu3bis3-nanocrystals-with-strong-absorption-in-the-second-near-infrared-window-for-radiation-therapy-enhancement
#11
Jiangfeng Du, Xiaopeng Zheng, Yuan Yong, Jie Yu, Xinghua Dong, Chenyang Zhang, Ruyi Zhou, Bai Li, Liang Yan, Chunying Chen, Zhanjun Gu, Yuliang Zhao
Integrating radiation therapy with high-depth photothermal therapy in the second near-infrared (NIR) window is highly required for efficient treatment of deep-seated tumor cells. Here, we constructed a multifunctional nano-theranostic with bimetallic chalcogenide nanocrystals (NCs) functionalized with amphiphilic d-α-tocopherol polyethylene glycol 1000 succinate (TPGS-Cu3BiS3). Benefiting from the strong absorbance of both X-ray and NIR light in the second NIR window, TPGS-Cu3BiS3 CNs can not only deposit more radiation dose to trigger enhanced radiation damage in vivo, but also conduct photo-induced hyperthermia for thermal ablation in the second NIR window and effective improvement of tumor oxygenation to overcome the hypoxia-associated radio-resistance of tumors...
June 5, 2017: Nanoscale
https://www.readbyqxmd.com/read/28579341/percutaneous-ultrasound-guided-fiducial-marker-placement-for-liver-cancer-robotic-stereotactic-radio-surgery-treatment-a-comparative-analysis-of-three-types-of-markers-and-needles
#12
Maria Marsico, Tommaso Gabbani, Sarah Lunardi, Andrea Galli, Maria Rosa Biagini, Vito Annese
BACKGROUND AND STUDY AIMS: Percutaneous placement of fiducial markers is required to perform stereotactic body radiation therapy (SBRT) for liver neoplastic lesions. This prospective trial was designed to evaluate the feasibility and safety of percutaneous ultrasound-guided placement of three different types of markers in patients with liver cancer referred for SBRT. PATIENTS AND METHODS: Fifty patients underwent percutaneous ultrasound-guided implantation of a fiducial marker in the liver...
June 1, 2017: Arab Journal of Gastroenterology: the Official Publication of the Pan-Arab Association of Gastroenterology
https://www.readbyqxmd.com/read/28578803/head-and-neck-cancer-cell-radiosensitization-upon-dual-targeting-of-c-abl-and-beta1-integrin
#13
Philipp Koppenhagen, Ellen Dickreuter, Nils Cordes
Integrin-mediated cell adhesion to extracellular matrix (ECM) critically contributes to cancer cell therapy resistance and DNA double strand break (DSB) repair. c-Abl tyrosine kinase has been linked to both of these processes. Based on our previous findings indicating c-Abl hyperphosphorylation on tyrosine (Y) 412 and threonine (T) 735 upon beta1-integrin inhibition, we hypothesized c-Abl tyrosine kinase as an important mediator of beta1-integrin signaling for radioresistance. In a panel of 8 cell lines from different solid cancer types grown in 3D laminin-rich ECM cultures, we targeted beta1 integrin with AIIB2 (mAb) and c-Abl with Imatinib with and without X-ray irradiation and subsequently examined clonogenic survival, residual DSBs, protein expression and phosphorylation...
May 31, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28576421/-impact-of-gleason-score-on-biochemical-recurrence-free-survival-after-radical-prostatectomy-with-positive-surgical-margins
#14
V Roux, R Eyraud, L Brureau, G Gourtaud, C Senechal, M Fofana, P Blanchet
PURPOSE: Research of predictive factors of biochemical recurrence to guide the establishment of an adjuvant treatment after radical prostatectomy for cancer with positive surgical margins. METHODOLOGY: A retrospective cohort of 1577 afro-caribbean patients undergoing radical prostatectomy operated between 1st January 2000 and 1st July 2013 was analyzed. In this cohort, 406 patients had positive surgical margin, we excluded 11 patients who received adjuvant therapy (radiotherapy, hormonotherapy, radio-hormonotherapy) and 2 patients for whom histological analysis of the surgical specimen was for a pT4 pathological stage...
June 2017: Progrès en Urologie
https://www.readbyqxmd.com/read/28566437/local-dna-repair-inhibition-for-sustained-radiosensitization-in-high-grade-gliomas
#15
Amanda R King, Christopher D Corso, Evan M Chen, Eric Song, Paul Bongiorni, Zhe Chen, Ranjini K Sundaram, Ranjit S Bindra, W Mark Saltzman
High-grade gliomas such as glioblastoma (GBM) and diffuse intrinsic pontine glioma (DIPG) are characterized by an aggressive phenotype with nearly universal local disease progression despite multimodal treatment, which typically includes chemotherapy, radiation therapy (RT), and possibly surgery. Radiosensitizers that have improved the effects of RT for extracranial tumors have been ineffective for the treatment of GBM and DIPG, in part due to poor blood brain barrier penetration and rapid intracranial clearance of small molecules...
May 31, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28566218/relations-between-lipoprotein-a-concentrations-lpa-genetic-variants-and-the-risk-of-mortality-in-patients-with-established-coronary-heart-disease-a-molecular-and-genetic-association-study
#16
Stephen Zewinger, Marcus E Kleber, Vinicius Tragante, Raymond O McCubrey, Amand F Schmidt, Kenan Direk, Ulrich Laufs, Christian Werner, Wolfgang Koenig, Dietrich Rothenbacher, Ute Mons, Lutz P Breitling, Herrmann Brenner, Richard T Jennings, Ioannis Petrakis, Sarah Triem, Mira Klug, Alexandra Filips, Stefan Blankenberg, Christoph Waldeyer, Christoph Sinning, Renate B Schnabel, Karl J Lackner, Efthymia Vlachopoulou, Ottar Nygård, Gard Frodahl Tveitevåg Svingen, Eva Ringdal Pedersen, Grethe S Tell, Juha Sinisalo, Markku S Nieminen, Reijo Laaksonen, Stella Trompet, Roelof A J Smit, Naveed Sattar, J Wouter Jukema, Heinrich V Groesdonk, Graciela Delgado, Tatjana Stojakovic, Anna P Pilbrow, Vicky A Cameron, A Mark Richards, Robert N Doughty, Yan Gong, Rhonda Cooper-DeHoff, Julie Johnson, Markus Scholz, Frank Beutner, Joachim Thiery, J Gustav Smith, Ragnar O Vilmundarson, Ruth McPherson, Alexandre F R Stewart, Sharon Cresci, Petra A Lenzini, John A Spertus, Oliviero Olivieri, Domenico Girelli, Nicola I Martinelli, Andreas Leiherer, Christoph H Saely, Heinz Drexel, Axel Mündlein, Peter S Braund, Christopher P Nelson, Nilesh J Samani, Daniel Kofink, Imo E Hoefer, Gerard Pasterkamp, Arshed A Quyyumi, Yi-An Ko, Jaana A Hartiala, Hooman Allayee, W H Wilson Tang, Stanley L Hazen, Niclas Eriksson, Claes Held, Emil Hagström, Lars Wallentin, Axel Åkerblom, Agneta Siegbahn, Igor Karp, Christopher Labos, Louise Pilote, James C Engert, James M Brophy, George Thanassoulis, Peter Bogaty, Wojciech Szczeklik, Marcin Kaczor, Marek Sanak, Salim S Virani, Christie M Ballantyne, Vei-Vei Lee, Eric Boerwinkle, Michael V Holmes, Benjamin D Horne, Aroon Hingorani, Folkert W Asselbergs, Riyaz S Patel, Bernhard K Krämer, Hubert Scharnagl, Danilo Fliser, Winfried März, Thimoteus Speer
BACKGROUND: Lipoprotein(a) concentrations in plasma are associated with cardiovascular risk in the general population. Whether lipoprotein(a) concentrations or LPA genetic variants predict long-term mortality in patients with established coronary heart disease remains less clear. METHODS: We obtained data from 3313 patients with established coronary heart disease in the Ludwigshafen Risk and Cardiovascular Health (LURIC) study. We tested associations of tertiles of lipoprotein(a) concentration in plasma and two LPA single-nucleotide polymorphisms ([SNPs] rs10455872 and rs3798220) with all-cause mortality and cardiovascular mortality by Cox regression analysis and with severity of disease by generalised linear modelling, with and without adjustment for age, sex, diabetes diagnosis, systolic blood pressure, BMI, smoking status, estimated glomerular filtration rate, LDL-cholesterol concentration, and use of lipid-lowering therapy...
May 26, 2017: Lancet Diabetes & Endocrinology
https://www.readbyqxmd.com/read/28560805/what-has-preoperative-radio-chemo-therapy-brought-to-localized-rectal-cancer-patients-in-terms-of-perioperative-and-long-term-outcomes-over-the-past-decades-a-systematic-review-and-meta-analysis-based-on-41-121-patients
#17
Bin Ma, Peng Gao, Hongchi Wang, Qingzhou Xu, Yongxi Song, Xuanzhang Huang, Jingxu Sun, Junhua Zhao, Junlong Luo, Yu Sun, Zhenning Wang
We asked what preoperative radiotherapy/chemoradiotherapy (PRT/PCRT) has brought to patients in terms of perioperative and long-term outcomes over the past decades. A systematic review and meta-analysis was conducted using PubMed, Embase and Web of Science databases. All original comparative studies published in English that were related to PRT/PCRT and surgical resection and which analyzed survival, postoperative and quality of life outcomes were included. Data synthesis and statistical analysis were carried out using Stata software...
May 30, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28560660/impact-of-treatment-on-survival-of-patients-with-secondary-glioblastoma
#18
Christina Hamisch, Maximilian Ruge, Stephanie Kellermann, Ann-Cathrin Kohl, Inga Duval, Roland Goldbrunner, Stefan J Grau
Data concerning treatment of secondary glioblastoma evolving from previously treated WHO II or III grade tumors are very scarce. The aim of this study was to evaluate the impact of surgical resection and adjuvant treatment on survival in patients with secondary glioblastoma. Thirty-nine patients with secondary glioblastoma evolving from previously treated lower grade gliomas between 2004 and 2015 were included. We evaluated the extent of resection, pathological parameters, adjuvant treatment, as well as survival after malignant transformation...
May 30, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28560600/short-course-radiotherapy-followed-by-neoadjuvant-bevacizumab-capecitabine-and-oxaliplatin-and-subsequent-radical-treatment-in-primary-stage-iv-rectal-cancer-long-term-results-of-a-phase-ii-study
#19
C Bisschop, T H van Dijk, J C Beukema, R L H Jansen, H Gelderblom, K P de Jong, H J T Rutten, C J H van de Velde, T Wiggers, K Havenga, G A P Hospers
BACKGROUND: In a Dutch phase II trial conducted between 2006 and 2010, short-course radiotherapy followed by systemic therapy with capecitabine, oxaliplatin, and bevacizumab as neoadjuvant treatment and subsequent radical surgical treatment of primary tumor and metastatic sites was evaluated. In this study, we report the long-term results after a minimum follow-up of 6 years. METHODS: Patients with histologically confirmed rectal adenocarcinoma with potentially resectable or ablatable metastases in liver or lungs were eligible...
May 30, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28560404/intermittent-low-dose-irradiation-enhances-the-effectiveness-of-radio-and-chemo-therapy-for-human-colorectal-adenocarcinoma-cell-line-ht-29
#20
Yang Wang, Yezhou Li, Li Yang, Dexin Yin
Low dose irradiation (LDIR) induces hormesis and adaptive response in organism and mammalian cell lines. Notably, LDIR generates distinct biological effects in cancer cells from normal cells, e.g., it may affect the growth of cancer cells via the activation of certain cell signaling pathway, which does not exist in normal cells. Therefore, LDIR is considered as a promising assistant method of clinical cancer therapy. In this study, we chose human colorectal adenocarcinoma cell line HT-29 as the experimental model, and investigated the differential biological effects between 250 mGy single dose LDIR and 250 mGy intermittent LDIR pretreatments in high dose irradiation (HDIR) radiotherapy and 5-fluorouracil (5-FU) based chemotherapy...
May 30, 2017: Oncology Reports
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