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https://www.readbyqxmd.com/read/29319928/low-dose-rate-brachytherapy-for-prostate-cancer-outcomes-beyond-10-years-of-follow-up
#1
S Lazarev, M R Thompson, N N Stone, R G Stock
OBJECTIVES: To examine biochemical control, survival, and late morbidity with definitive low-dose-rate brachytherapy (LDR-BT) for prostate cancer patients surviving ≥10 years post-treatment. MATERIALS AND METHODS: We identified 757 men with localized prostate cancer who underwent definitive LDR-BT in the period 1990-2006 and were followed for ≥10 years at our institution. Biochemical failure-free survival (BFFS), distant metastases-free survival (DMFS), disease-specific survival (DSS), and overall survival (OS) were selected as study endpoints...
January 10, 2018: BJU International
https://www.readbyqxmd.com/read/29317377/multiparametric-mri-for-the-detection-of-local-recurrence-of-prostate-cancer-in-the-setting-of-biochemical-recurrence-after-low-dose-rate-brachytherapy
#2
Luca F Valle, Matthew D Greer, Joanna H Shih, Tristan Barrett, Yan Mee Law, Andrew B Rosenkrantz, Haytham Shebel, Akhil Muthigi, Daniel Su, Maria J Merino, Bradford J Wood, Peter A Pinto, Andra V Krauze, Aradhana Kaushal, Peter L Choyke, Barış Türkbey, Deborah E Citrin
PURPOSE: Prostate multiparametric magnetic resonance imaging (mpMRI) has utility in detecting post-radiotherapy local recurrence. We conducted a multireader study to evaluate the diagnostic performance of mpMRI for local recurrence after low dose rate (LDR) brachytherapy. METHODS: A total of 19 patients with biochemical recurrence after LDR brachytherapy underwent 3T endorectal coil mpMRI with T2-weighted imaging, dynamic contrast-enhanced imaging (DCE) and diffusion-weighted imaging (DWI) with pathologic confirmation...
January 2018: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/29306674/a-comparison-of-early-prostate-specific-antigen-decline-between-prostate-brachytherapy-and-different-fractionation-of-external-beam-radiation-impact-on-biochemical-failure
#3
Daniel Taussky, Stéphane Bedwani, Nissan Meissner, Jean-Paul Bahary, Carole Lambert, Maroie Barkati, Marie-Claude Beauchemin, Cynthia Ménard, Guila Delouya
PURPOSE: The aim of this study was to compare early prostate-specific antigen (PSA) decline patterns and PSA nadirs between low-dose-rate seed prostate brachytherapy (LDR-PB) and different fractionations of external beam radiotherapy (EBRT) and their predictive importance for biochemical failure (bF). METHODS AND MATERIALS: Patients with D'Amico low- or intermediate-risk prostate cancer who underwent a single-modality treatment without androgen deprivation were included in this study...
January 3, 2018: Brachytherapy
https://www.readbyqxmd.com/read/29304813/the-association-between-pre-mir-27a-rs895819-polymorphism-and-myocardial-infarction-risk-in-a-chinese-han-population
#4
Meng-Yun Cai, Jie Cheng, Meng-Yuan Zhou, Li-Li Liang, Si-Min Lian, Xiao-Shan Xie, Shun Xu, Xinguang Liu, Xing-Dong Xiong
BACKGROUND: Accumulating evidences have shown that miRNAs are directly or indirectly involved in a variety of biological processes, and closely associated with diverse human diseases, including cardiovascular diseases. SNPs locating within pri/pre-miRNA can affect miRNA processing and binding ability of target genes. MiR-27a, miR-26a-1 miR-100, miR-126 and miR-218 were reported to be associated with pathogenesis of myocardial infarction (MI). Here we aimed to evaluate the potential association of five polymorphisms in these pri/pre-miRNAs with individual susceptibility to MI in a Chinese Han population...
January 6, 2018: Lipids in Health and Disease
https://www.readbyqxmd.com/read/29283889/two-dimensional-cspbbr3-pcbm-heterojunctions-for-sensitive-fast-and-flexible-photodetectors-boosted-by-charge-transfer
#5
Yalong Shen, Dejian Yu, Xiong Wang, Chengxue Huo, Ye Wu, Zhengfeng Zhu, Haibo Zeng
Inorganic halide perovskites (IHPs) exhibited promising potentials for high-performance wide-band photodetectors (PDs) due to their high light absorption coefficients, long carrier diffusion length and wide light absorption ranges. Here, we report two-dimensional (2D) CsPbBr3/PCBM heterojunctions for sensitive, fast and flexible photodetectors, whose performances can be greatly boosted by the charge transfer through the energy-aligned interface. The 2D CsPbBr3 nanosheets (NSs) with high crystallinity were fabricated via a simple solution-process at room temperature, and then assembled into flexible heterojunctions films with polymerphenyl-C61-butyric acid methyl ester (PCBM)...
December 28, 2017: Nanotechnology
https://www.readbyqxmd.com/read/29282803/hair-follicle-stem-cell-faith-is-dependent-on-chromatin-remodeling-capacity-following-low-dose-radiation
#6
Nadine Schuler, Sara Timm, Claudia E Rübe
The main function of the skin, to protect against the environment, is supported by the activity of different stem cell populations. The main focus of this study was elucidating the coping mechanisms of stem cells against the stimulation of constant exposure to genotoxic stresses, both endogenous and exogenous, to ensure long-term function. Investigation of various mouse strains, differing in their DNA repair capacity, enables us to clarify fractionated low-dose irradiation (LDR)-induced consequences for different stem cell populations of the murine hair follicle in their physiological stem cell niche...
December 28, 2017: Stem Cells
https://www.readbyqxmd.com/read/29260727/dosimetric-impact-of-dual-energy-ct-tissue-segmentation-for-low-energy-prostate-brachytherapy-a-monte-carlo-study
#7
Charlotte Remy, Arthur Lalonde, Dominic Béliveau-Nadeau, Jean-Francois Carrier, Hugo Bouchard
{\color{red}The purpose of this study is} to evaluate the impact of a novel tissue characterization method using dual-energy over single-energy computed tomography (DECT and SECT) on Monte Carlo (MC) dose calculations for low-dose rate (LDR) prostate brachytherapy performed in a patient like geometry. A virtual patient geometry is created using contours from a real patient pelvis CT scan, where known elemental compositions and varying densities are overwritten in each voxel. A second phantom is made with additional calcifications...
December 20, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29251165/prostate-cancer-high-dose-rate-brachytherapy-review-of-evidence-and-current-perspectives
#8
Sunil W Dutta, Clayton E Alonso, Bruce Libby, Timothy N Showalter
Patients with intermediate to high risk disease (prostate specific antigen (PSA) ≥ 10, Gleason score ≥ 7, or clinical stage ≥ T2b) suffer from poorer long-term biochemical control (freedom from an increasing prostate specific antigen level) when treated with external beam radiation (EBRT) alone. In order to improve biochemical control while limiting long-term complications, brachytherapy has been incorporated into radiotherapy treatment, either alone or in combination with EBRT. Areas covered: Current literature regarding the use of high dose-rate (HDR) brachytherapy for localized prostate cancer, including as a boost and monotherapy...
December 22, 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/29249526/curative-radiation-therapy-at-time-of-progression-under-active-surveillance-compared-with-up-front-radical-radiation-therapy-for-prostate-cancer
#9
Alejandro Berlin, Ardalan E Ahmad, Melvin L K Chua, Fabio Y Moraes, Haiyan Jiang, Maria Komisarenko, Narhari Trimilshina, Hamid Raziee, Ali Hosni, Jure Murgic, Peter Chung, Robert G Bristow, Antonio Finelli
PURPOSE: To describe and compare outcomes in men with initially presumed indolent prostate cancer receiving definitive radiation therapy after active surveillance (AS) versus those in a risk-matched cohort undergoing up-front radiation therapy. METHODS AND MATERIALS: Men prospectively enrolled in an AS program between 1992 and 2014 and subsequently undergoing curative radiation therapy (ie, image guided radiation therapy [IGRT] or low-dose-rate brachytherapy [LDR-BT]) were identified...
November 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29248717/cd-doped-sb2o4-nanostructures-modified-glassy-carbon-electrode-for-efficient-detection-of-melamine-by-electrochemical-approach
#10
Mohammed M Rahman, Jahir Ahmed
Cadmium doped antimony oxide (Cd-doped Sb2O4) nanostructures (CAO-NSs) were synthesized by a facile hydrothermal method in alkaline phase at low temperature to detect the melamine from aqueous solution. The calcined CAO-NSs were characterized systematically by FE-SEM, EDS, UV/Vis., FTIR spectroscopy, powder XRD, and XPS techniques. The glassy carbon electrode (GCE) was modified with the CAO-NSs and sensing performance towards the selective melamine was explored by the electrochemical approach in phosphate buffer solution...
December 7, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29241706/placement-of-an-absorbable-rectal-hydrogel-spacer-in-patients-undergoing-low-dose-rate-brachytherapy-with-palladium-103
#11
Amandeep S Taggar, Tomer Charas, Gil'ad N Cohen, Keeratikarn Boonyawan, Marisa Kollmeier, Sean McBride, Nitin Mathur, Antonio L Damato, Michael J Zelefsky
PURPOSE: Rates of rectal toxicity after low-dose-rate (LDR) brachytherapy for prostate cancer are dependent on rectal dose, which is associated with rectal distance from prostate and implanted seeds. Placement of a hydrogel spacer between the prostate and rectum has proven to reduce the volume of the rectum exposed to higher radiation dose levels in the setting of external beam radiotherapy. We present our findings with placing a rectal hydrogel spacer in patients following LDR brachytherapy, and we further assess the impact of this placement on dosimetry and acute rectal toxicity...
December 11, 2017: Brachytherapy
https://www.readbyqxmd.com/read/29228923/cdkn2bas-gene-polymorphisms-and-the-risk-of-intracranial-aneurysm-in-the-chinese-population
#12
Yunchang Chen, Gancheng Li, Haiyan Fan, Shenquan Guo, Ran Li, Jian Yin, Xin Zhang, Xifeng Li, Xuying He, Chuanzhi Duan
BACKGROUND: CDKN2BAS gene polymorphisms has been shown to correlation with intracranial aneurysm(IA) in the study of foreign people. The study, the author selected the Chinese people as the research object to explore whether CDKN2BAS gene polymorphisms associated with Chinese patients with IA. METHODS: We selected 200 patients(52.69 ± 11.50) with sporadic IA as experimental group, 200 participants(49.99 ± 13.00) over the same period to the hospital without cerebrovascular diseases as control group...
December 11, 2017: BMC Neurology
https://www.readbyqxmd.com/read/29226993/genetic-polymorphisms-of-microrna-machinery-genes-predict-overall-survival-of-esophageal-squamous-carcinoma
#13
Cuiju Wang, Hailing Dong, Haiyan Fan, Jianhua Wu, Guiying Wang
BACKGROUND: MicroRNA (miRNA)-related single nucleotide polymorphisms (miR-SNPs) in miRNA processing machinery genes are implicated in carcinogenesis, as they change the expression profiles of miRNA. Six miR-SNPs in miRNA processing machinery genes, including Dicer (rs3742330), RAN (rs14035), XPO5 (rs11077), TNRC6B (rs9623117), GEMIN3 (rs197412), and GEMIN4 (rs2740348), were evaluated for their association with esophageal squamous cell carcinoma (ESCC). METHODS: The miR-SNP of the miRNA processing genes were genotyped using the polymerase chain reaction-ligase detection reaction (PCR-LDR) assay, while the XPO5 expression levels in ESCC tissues were measured by immunochemistry methods...
December 11, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/29221042/image-processing-pipeline-for-segmentation-and-material-classification-based-on-multispectral-high-dynamic-range-polarimetric-images
#14
Miguel Ángel Martínez-Domingo, Eva M Valero, Javier Hernández-Andrés, Shoji Tominaga, Takahiko Horiuchi, Keita Hirai
We propose a method for the capture of high dynamic range (HDR), multispectral (MS), polarimetric (Pol) images of indoor scenes using a liquid crystal tunable filter (LCTF). We have included the adaptive exposure estimation (AEE) method to fully automatize the capturing process. We also propose a pre-processing method which can be applied for the registration of HDR images after they are already built as the result of combining different low dynamic range (LDR) images. This method is applied to ensure a correct alignment of the different polarization HDR images for each spectral band...
November 27, 2017: Optics Express
https://www.readbyqxmd.com/read/29211144/social-deprivation-index-and-leprosy-in-par%C3%A3-state-brazil-in-2013-spatial-analysis
#15
Emanuele Cordeiro Chaves, Samara Viana Costa, Rute Leila Dos Reis Flores, Eula Oliveira Santos das Neves
OBJECTIVE: to analyze the ecological association between the condition of social deprivation and leprosy detection rate in Pará State, Brazil. METHODS: cross-sectional ecological study with data from the Information System for Notifiable Diseases (Sinan); global and local bivariate Moran's factor analysis and autocorrelation were used to identify spatial patterns associated with the distribution of the social deprivation index (SDI) and leprosy detection rate (LDR)...
October 2017: Epidemiologia e Servicos de Saude: Revista do Sistema Unico de Saude do Brasil
https://www.readbyqxmd.com/read/29205851/regulated-cell-death-of-lymphoma-cells-after-graded-mitochondrial-damage-is-differentially-affected-by-drugs-targeting-cell-stress-responses
#16
Tomás Lombardo, Martín Gil Folgar, Luciana Salaverry, Estela Rey-Roldán, Elida M Alvarez, María C Carreras, Laura Kornblihtt, Guillermo A Blanco
Collapse of the mitochondrial membrane potential (MMP) is often considered the initiation of regulated cell death (RCD). Carbonyl cyanide 3-chlorophenylhydrazone (CCCP) is an uncoupler of the electron transport chain (ETC) that facilitates the translocation of protons into the mitochondrial matrix leading to the collapse of the MMP. Several cell stress responses such as mitophagy, mitochondrial biogenesis and the ubiquitin proteasome system, may differentially contribute to restrain the initiation of RCD depending on the extent of mitochondrial damage...
December 4, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/29205161/-low-dose-rate-brachytherapy-in-low-and-middle-risk-prostate-cancer-results-and-impact-on-quality-of-life-with-5-year-follow-up
#17
Felipe Balbontín, Pablo Pizzi, Andrea Canals, Isabel Alliende
Low dose rate brachytherapy (LDR-Br) with radioactive isotopes is a curative treatment and has shown to be comparable for the management of localized prostate cancer (PCa) to more conventional treatments such as radical prostatectomy or external beam radiotherapy, but with fewer side effects. The aim of this study is to show the global, specific and biochemical recurrence-free survival in 193 patients undergoing low dose rate Brachytherapy with permanent implants with iodine 125 and analyze the quality of life impact...
December 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/29187469/brachytherapy-for-buccal-cancer-from-conventional-low-dose-rate-ldr-or-mold-technique-to-high-dose-rate-interstitial-brachytherapy-hdr-isbt
#18
Tadayuki Kotsuma, Hideya Yamazaki, Koji Masui, Ken Yoshida, Kimishige Shimizutani, Hironori Akiyama, Shumei Murakami, Fumiaki Isohashi, Yasuo Yoshioka, Kazuhiko Ogawa, Eiichi Tanaka
BACKGROUND/AIM: To examine the effectiveness of newly-installed high-dose-rate interstitial brachytherapy (HDR-ISBT) for buccal cancer. PATIENTS AND METHODS: We retrospectively reviewed 36 patients (25 men and 11 women) with buccal cancer treated with curative brachytherapy with or without external radiotherapy with a median follow-up of 99 months. A total of 15 HDR-ISBT (median 48 Gy/ 8 fractions, range=24-60 Gy) patients were compared to conventional 15 cases LDR-ISBT (70 Gy, range=42...
December 2017: Anticancer Research
https://www.readbyqxmd.com/read/29164270/long-term-outcomes-in-patients-younger-than-60%C3%A2-years-of-age-treated-with-brachytherapy-for-prostate-cancer
#19
Pedro J Prada, Juan Cardenal, Ana García Blanco, Javier Anchuelo, María Ferri, Ivan Diaz de Cerio, Andrés Vázquez, Maite Pacheco, Samuel Ruiz Arrebola
PURPOSE: The purpose of the study was to report the outcomes and late toxicities in patients younger than 60 years of age with long-term follow-up treated with low dose rate (LDR) brachytherapy for localized prostate cancer. METHODS: Between January 2000 and December 2009, 270 consecutive patients were treated with favourable localized prostate cancer; the median follow-up was 111 months (range 21-206). All patients received one implant of LDR brachytherapy. Toxicity was reported according to the Common Toxicity Criteria for Adverse Events, Version 4...
November 21, 2017: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/29145160/larval-development-ratio-test-with-the-calanoid-copepod-acartia-tonsa-as-a-new-bioassay-to-assess-marine-sediment-quality
#20
Isabella Buttino, Valentina Vitiello, Simona Macchia, Alice Scuderi, David Pellegrini
The copepod Acartia tonsa was used as a model species to assess marine sediment quality. Acute and chronic bioassays, such as larval development ratio (LDR) and different end-points were evaluated. As a pelagic species, A. tonsa is mainly exposed to water-soluble toxicants and bioassays are commonly performed in seawater. However, an interaction among A. tonsa eggs and the first larval stages with marine sediments might occur in shallow water environments. Here we tested two different LDR protocols by incubating A...
November 13, 2017: Ecotoxicology and Environmental Safety
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