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https://www.readbyqxmd.com/read/28431375/radioactivity-in-wastes-generated-from-shale-gas-exploration-and-production-north-eastern-poland
#1
Paweł Jodłowski, Jan Macuda, Jakub Nowak, Chau Nguyen Dinh
In the present study, the K-40, U-238, Ra-226, Pb-210, Ra-228 and Th-228 activity concentrations were measured in 64 samples of wastes generated from shale gas exploration in North-Eastern Poland. The measured samples consist of drill cuttings, solid phase of waste drilling muds, fracking fluids, return fracking fluids and waste proppants. The measured activity concentrations in solid samples vary in a wide range from 116 to around 1100 Bq/kg for K-40, from 14 to 393 Bq/kg for U-238, from 15 to 415 Bq/kg for Ra-226, from 12 to 391 Bq/kg for Pb-210, from a few Bq/kg to 516 Bq/kg for Ra-228 and from a few Bq/kg to 515 Bq/kg for Th-228...
April 18, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28427521/management-of-metastatic-castration-resistant-prostate-cancer-a-focus-on-radium-223-opinions-and-suggestions-from-an-expert-multidisciplinary-panel
#2
REVIEW
Sergio Baldari, Giuseppe Boni, Roberto Bortolus, Orazio Caffo, Giario Conti, Giuseppe De Vincentis, Fabio Monari, Giuseppe Procopio, Daniele Santini, Ettore Seregni, Riccardo Valdagni
Radium-223, a calcium mimetic bone-seeking radionuclide that selectively targets bone metastases with alpha particles, is approved for the treatment of men with metastatic castration-resistant prostate cancer (mCRPC) and symptomatic bone metastases. In patients with mCRPC, treatment with radium-223 has been associated with survival benefit, regardless of prior docetaxel use, and also has a positive impact on symptomatic skeletal events and quality of life. Radium-223 is best suited for patients with symptomatic mCRPC and bone-predominant disease and no visceral metastases, and may lead to better outcomes when given early in the course of the disease...
May 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28427506/recent-advances-in-genitourinary-tumors-a-review-focused-on-biology-and-systemic-treatment
#3
REVIEW
Aránzazu González Del Alba, José Ángel Arranz, Javier Puente, María José Méndez-Vidal, Enrique Gallardo, Enrique Grande, Begoña Pérez-Valderrama, Enrique González-Billalabeitia, Martín Lázaro-Quintela, Álvaro Pinto, Nuria Lainez, Josep M Piulats, Emilio Esteban, José Pablo Maroto Rey, Jorge A García, Cristina Suárez
Updated information published up to 2016 regarding major advances in renal cancer, bladder cancer, and prostate cancer is here presented. Based on an ever better understanding of the genetic and molecular alterations that govern the initial pathogenic mechanisms of tumor oncogenesis, an improvement in the characterization and treatment of urologic tumors has been achieved in the past year. According to the Cancer Genome Atlas (ATLAS) project, alterations in the MET pathway are characteristics of type 1 papillary renal cell carcinomas, and activation of NRF2-ARE pathway is associated with the biologically distinct type 2...
May 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28426983/constraining-the-temporal-variations-of-ra-isotopes-and-rn-in-the-groundwater-end-member-implications-for-derived-sgd-estimates
#4
Marc Cerdà-Domènech, Valentí Rodellas, Albert Folch, Jordi Garcia-Orellana
Submarine groundwater discharge (SGD) has been recognized as an important supplier of chemical compounds to the ocean that may influence coastal geochemical cycles. Radium isotopes ((223)Ra, (224)Ra, (226)Ra,(228)Ra) and radon ((222)Rn) have been widely applied as tracers of SGD. Their application requires the appropriate characterization of both the concentrations of tracers in the discharging groundwater and their distribution in the coastal water column. This study evaluates the temporal evolution of Ra isotopes and (222)Rn concentrations in a dynamic subterranean estuary of a microtidal Mediterranean coastal aquifer that experiences large displacements of the fresh-saltwater interface as a necessary initial step in evaluating the influence of SGD in coastal waters...
April 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28426839/medical-history-in-the-hellenic-journal-of-nuclear-medicine
#5
EDITORIAL
Andreas Otte, Byeong Cheol Ahn
The Hellenic Journal of Nuclear Medicine is about to celebrate its 20th anniversary end of 2017. On board of the editorial team since 2003, this journal has influenced me like a good friend over the many past years. From time to time, the journal has published interesting and valuable historical notes. They show that nuclear medicine has a history and that medicine is its basis. They also teach us today, and some of the ancient perspectives and approaches are still valid. The reader of HJNM may be interested in these historical contributions, as they are timeless...
January 2017: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/28426107/controversies-and-consensus-in-the-innovation-access-for-cancer-therapy-in-the-european-countries-on-the-subject-of-metastatic-prostate-cancer
#6
S Oudard, F Courbon
Innovative cancer therapies and advances in drug development have created new hopes for patients and health providers. The purpose of this article was to evaluate the discrepancies in the assessment of the magnitude of benefit of four new drugs (abiraterone acetate, enzalutamide, cabazitaxel, radium-223 dichloride) for the treatment of metastatic castration-resistant prostate cancer (mCRPC). The comparison was done among three European countries (UK, Germany and France) and Canada, according to the statement of each country and to the European Society of Medical Oncology (ESMO) Magnitude of Clinical Benefit Scale...
February 1, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28406747/100-years-of-radiation-research-in-the-footsteps-of-failla
#7
Eric J Hall
Gioacchino Failla was initially appointed to operate the radon plant at Memorial Hospital in 1916. What to most people would have been a part-time temporary position was to him a career. He was not satisfied to simply fabricate radon seeds, he wanted to understand the physics and biology of the radiation emitted by the progeny of radium. His was not the first medical physics group in the United States, though it was one of the earliest, but it was the first to put such emphasis on the biological effects. After more than 28 years at Memorial Hospital, Failla moved his research group to Columbia University Medical Center and his pioneering work, blending physics and biology, has continued to date at Columbia by those that he trained or inspired, under three directors that followed him...
April 2017: Radiation Research
https://www.readbyqxmd.com/read/28402142/development-of-separation-technology-for-the-removal-of-radium-223-from-targeted-thorium-conjugate-formulations-part-ii-purification-of-targeted-thorium-conjugates-on-cation-exchange-columns
#8
Janne Olsen Frenvik, Knut Dyrstad, Solveig Kristensen, Olav B Ryan
Tumour targeting pharmaceuticals will play a crucial role in future pharma pipelines. The Targeted Thorium Conjugate (TTC) therapeutic platform could provide real benefit to patients, whereby targeting moieties like monoclonal antibodies are radiolabelled with the alpha-emitting radionuclide thorium-227 ((227)Th, t1/2=18.7 days). A potential problem could be the accumulation of the long-lived daughter nuclide radium-223 ((223)Ra, t1/2=11.4 days) in the drug product during manufacture and distribution. Therefore, the level of (223)Ra must be standardised before administration to the patient...
April 12, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/28391026/radiopharmaceuticals-in-the-elderly-cancer-patient-practical-considerations-with-a-focus-on-prostate-cancer-therapy-a-position-paper-from-the-international-society-of-geriatric-oncology-task-force
#9
John O Prior, Silke Gillessen, Manfred Wirth, William Dale, Matti Aapro, Wim J G Oyen
Molecular imaging using radiopharmaceuticals has a clear role in visualising the presence and extent of tumour at diagnosis and monitoring response to therapy. Such imaging provides prognostic and predictive information relevant to management, e.g. by quantifying active tumour mass using positron emission tomography/computed tomography (PET/CT). As these techniques require only pharmacologically inactive doses, age and potential frailty are generally not important. However, this may be different for therapy involving radionuclides because the radiation can impact normal bodily function (e...
April 6, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28383088/extraction-of-223-radium-by-haemodialysis-after-treatment-of-metastatic-castration-resistant-prostate-cancer
#10
Oliver Stephan Großer, Heiko Wissel, Thekla Wallbaum, Philipp Genseke, Dennis Kupitz, Jens Ricke, Juri Ruf, Holger Amthauer
AIM: (223)Radium-dichloride ((223)Ra) administration is an upcoming therapeutic option in patients with castration-resistant metastatic prostate cancer (mCRPC), whose renal and faecal excretion of (223)Ra has been primarily estimated from data of a phase-I clinical trial in patients with normal renal function. In the rare case of concomitant renal insufficiency requiring haemodialysis (HD), an estimation of the contamination of dialysate would be beneficial. METHODS: The excretion of (223)Ra and its concentration in the dialysate in a patient with mCRPC and end-stage renal disease was examined for six consecutive treatment cycles...
April 6, 2017: Nuklearmedizin. Nuclear Medicine
https://www.readbyqxmd.com/read/28367230/efficacy-of-cabazitaxel-treatment-in-metastatic-castration-resistant-prostate-cancer-in-second-and-later-lines-an-experience-from-two-german-centers
#11
Stefanie Zschäbitz, Sonia Vallet, Boris Hadaschik, Daniel Debatin, Stefan Fuxius, Andreas Karcher, Sascha Pahernik, Cathleen Spath, Stefan Duensing, Dirk Jäger, Markus Hohenfellner, Carsten Grüllich
Purpose: Several new treatment options for patients with metastatic castration resistant prostate cancer (mCRPC) have been approved within the last years - among them cabazitaxel (CAB), abiraterone acetate, enzalutamide, and radium-223. The aim of this study was to assess factors predictive for efficacy of CAB. Methods: We analyzed all patients with mCRPC treated with CAB at our institutions between 2011 and 2016. Data were retrieved retrospectively from the electronical patient chart. Results: 69 patients received CAB (26...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28365163/comparing-clinical-outcomes-for-radium-223-do-older-patients-do-worse
#12
Yee Pei Song, Tracey Ellis, Richard Walshaw, Peter Mbanu, Omi Parikh, John Logue, Ananya Choudhury
PURPOSE: To examine the clinical benefits and toxicities of (223)Ra in 2 different age groups of patients with castrate-resistant prostate cancer. METHODS AND MATERIALS: This was a retrospective study of patients treated with (223)Ra in 2 tertiary centers. Patients were divided into 2 different groups based on their age (≥72 years old and <72 years old). Treatment toxicities were graded according to Common Terminology Criteria for Adverse Events version 4...
January 29, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28364014/radium-223-inhibits-osseous-prostate-cancer-growth-by-dual-targeting-of-cancer-cells-and-bone-microenvironment-in-mouse-models
#13
Mari I Suominen, Katja M Fagerlund, Jukka P Rissanen, Yvonne M Konkol, Jukka P Morko, ZhiQi Peng, Esa J Alhoniemi, Salla K Laine, Eva Corey, Dominik Mumberg, Karl Ziegelbauer, Sanna-Maria Käkönen, Jussi Halleen, Robert L Vessella, Arne Scholz
Radium-223 dichloride (radium-223, Xofigo®), a targeted alpha therapy, is currently used for the treatment of patients with castration-resistant prostate cancer (CRPC) with bone metastases. This study examines the mode-of-action and antitumor efficacy of radium-223 in two prostate cancer xenograft models. <br /><br />Experimental Design: Mice bearing intratibial LNCaP or LuCaP 58 tumors were randomized to groups (n = 12-17) based on lesion grade and/or serum PSA level and administered with radium-223 (300 kBq/kg) or vehicle, twice at 4-week intervals...
March 31, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28361045/phase-i-clinical-trial-of-sipuleucel-t-combined-with-escalating-doses-of-ipilimumab-in-progressive-metastatic-castrate-resistant-prostate-cancer
#14
Mark Scholz, Sabrina Yep, Micah Chancey, Colleen Kelly, Ken Chau, Jeffrey Turner, Richard Lam, Charles G Drake
BACKGROUND: Sipuleucel-T (SIP-T), which functions by stimulating cancer-specific dendritic cells, prolongs survival in men with prostate cancer. Ipilimumab (IPI) achieved a borderline survival advantage in a large randomized trial. SIP-T and IPI are potentially synergistic. PATIENTS AND METHODS: Nine men with progressive metastatic castrate-resistant prostate cancer (mCRPC) were treated prospectively with SIP-T followed immediately by IPI with one of the following doses of IPI: 1 mg/kg at 1 week after SIP-T; 1 mg/kg at 1 and 4 weeks after SIP-T; or 1 mg/kg at 1, 4, and 7 weeks after SIP-T...
2017: ImmunoTargets and Therapy
https://www.readbyqxmd.com/read/28345444/budgetary-impact-of-cabazitaxel-use-after-docetaxel-treatment-for-metastatic-castration-resistant-prostate-cancer
#15
Kyle Flannery, Ed Drea, Louis Hudspeth, Shelby Corman, Xin Gao, Mei Xue, Raymond Miao
BACKGROUND: With the approval of several new treatments for metastatic castration-resistant prostate cancer (mCRPC), budgetary impact is a concern for health plan decision makers. Budget impact models (BIMs) are becoming a requirement in many countries as part of formulary approval or reimbursement decisions. Cabazitaxel is a second-generation taxane developed to overcome resistance to docetaxel and is approved for the treatment of patients with mCRPC previously treated with a docetaxel-containing regimen...
April 2017: Journal of Managed Care & Specialty Pharmacy
https://www.readbyqxmd.com/read/28343275/potential-toxic-elements-in-stream-sediments-soils-and-waters-in-an-abandoned-radium-mine-central-portugal
#16
I M H R Antunes, A M R Neiva, M T D Albuquerque, P C S Carvalho, A C T Santos, Pedro P Cunha
The Alto da Várzea radium mine (AV) exploited ore and U-bearing minerals, such as autunite and torbernite. The mine was exploited underground from 1911 to 1922, closed in 1946 without restoration, and actually a commercial area is deployed. Stream sediments, soils and water samples were collected between 2008 and 2009. Stream sediments are mainly contaminated in As, Th, U and W, which is related to the AV radium mine. The PTEs, As, Co, Cr, Sr, Th, U, W, Zn, and electrical conductivity reached the highest values in soils collected inside the mine influence...
March 25, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28343081/simultaneous-determination-of-226-ra-228-ra-and-210-pb-in-drinking-water-using-3m-empore%C3%A2-rad-disk-by-lsc-pls
#17
Jordi Fons-Castells, Javier Oliva, Joana Tent-Petrus, Montserrat Llauradó
A procedure for the rapid and simultaneous determination of (226)Ra, (228)Ra and (210)Pb in drinking water by means of extraction with a 3M Empore™ Radium RAD disk and liquid scintillation spectrometry is described. The selective elution of (210)Pb from the RAD disk and a multivariate calibration using partial least squares regression (PLS) are tested as methods to avoid overlap in the spectra between (228)Ra and (210)Pb. The validated procedure was tested with mixtures of radionuclides and interlaboratory materials; finally, it was applied to natural waters...
March 21, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28342344/water-hardness-determines-226-ra-uptake-in-the-tropical-freshwater-mussel
#18
Che Doering, Andreas Bollhöfer
Chemical data for freshwater mussels (Velesunio spp.) and water from 15 sampling sites in the Alligator Rivers Region and Rum Jungle uranium provinces in tropical Northern Australia were analysed to develop a predictive model of radium-226 ((226)Ra) bioaccumulation for variable water calcium (Ca) and magnesium (Mg) concentrations. Application of the model as a (226)Ra screening approach for freshwater mussels in tropical waterbodies potentially impacted by operational or remediated uranium mine sites is discussed in relation to Mudginberri Billabong, located approximately 12 km downstream of Ranger uranium mine in the Alligator Rivers Region...
March 22, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28340775/quantification-of-226-ra-at-environmental-relevant-levels-in-natural-waters-by-icp-ms-optimization-validation-and-limitations-of-an-extraction-and-preconcentration-approach
#19
François Lagacé, Delphine Foucher, Céline Surette, Olivier Clarisse
Radium (Ra) at environmental relevant levels in natural waters was determined by ICP-MS after an off-line pre-concentration procedure. The latter consisted of Ra selective elution from potential interfering elements (i.e. other alkaline earth cations: Ba(2+), Sr(2+), Ca(2+), Mg(2+)) on a series of two different ion exchange resins (AG50W-X8 and Sr-resin). The overall analytical method was optimized according to the instrumental performance, the volume of water sample loaded on resins, and the sample salinity...
May 15, 2017: Talanta
https://www.readbyqxmd.com/read/28338853/radiological-impacts-assessment-for-workers-in-ceramic-industry-in-serbia
#20
Nataša Todorovic, Dušan Mrda, Jan Hansman, Slavko Todorovic, Jovana Nikolov, Miodrag Krmar
Studies have been carried out to determine the natural radioactivity in some materials used in ceramic industry (zircon, zirkosil, Zircobit MO/S, zircon silicate, zirklonil frit, hematite, bentonite, wollastonite, raw kaolin, kaolinized granite, sileks ball, feldspar, pigment, white base serigraphic, engobe) and their associated radiation hazard. The external hazard index, Hex, values, radium equivalent activity, Raeq, total absorbed dose rates, D and annual effective dose, De were derived for all measured materials and compared with the recommended values to assess the external radiation hazards to workers who worked in ceramic industries in Serbia...
March 3, 2017: Radiation Protection Dosimetry
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