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https://www.readbyqxmd.com/read/28092230/octamethylcyclotetrasiloxane-d4
#1
(no author information available yet)
Octamethylcyclotetrasiloxane (D4; CAS No. 556-67-2) is used as a monomer in the manufacture of polymeric materials, which are widely used in various industrial and/or medical applications, such as breast implants. D4 has a relatively low order of toxicity following acute administration via the oral, dermal, and inhalation routes of exposure and is not considered to be a dermal or eye irritant or to be a dermal sensitizer. There is no appreciable dermal absorption of D4 based on results from in vivo and in vitro studies...
January 2017: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/28089230/metastatic-fractures-of-long-limb-bones
#2
REVIEW
P Anract, D Biau, P Boudou-Rouquette
The diagnosis of pathological fracture should be considered routinely in patients with long limb-bone fractures. Investigations must be performed to establish the diagnosis of pathological fracture then to determine that the bone lesion is a metastasis. In over 85% of cases, the clinical evaluation combined with a detailed analysis of the radiographs is sufficient to determine that the fracture occurred at a tumour site. Aetiological investigations establish that the tumour is a metastasis. In some patients, the diagnosis of metastatic cancer antedates the fracture...
January 11, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28079574/prognostic-impact-of-mum1-irf4-expression-in-burkitt-lymphoma-bl-a-reappraisal-of-88-bl-patients-in-japan
#3
Akira Satou, Naoko Asano, Seiichi Kato, Ahmed A Elsayed, Naoya Nakamura, Hiroaki Miyoshi, Koichi Ohshima, Shigeo Nakamura
MUM1/IRF4 expression is detected in 18% to 41% of Burkitt lymphoma (BL). However, only a few studies of MUM1-positive (MUM1) BL have been reported, and its characteristics still remain controversial. To highlight the features of MUM1 BL, we compared the clinicopathologic characteristics of 37 cases of MUM1 and 51 cases of MUM1-negative (MUM1) BL in Japan. Compared with MUM1 BL, patients with MUM1 BL showed significantly younger onset (P=0.0062) and a higher ratio of females (P=0.013). We have also revealed the difference in the involved sites...
January 10, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28076321/secretion-modification-region-derived-peptide-blocks-exosome-release-and-mediates-cell-cycle-arrest-in-breast-cancer-cells
#4
Ming-Bo Huang, Ruben R Gonzalez, James Lillard, Vincent C Bond
PURPOSE: Discovery and development of a novel anticancer PEG-SMR-Clu peptide to prevent breast cancer metastasis. How breast cancer cells and primary mammary epithelial cells interact and communicate with each other to promote tumorigenesis and how to prevent tumor metastasis has long been a concern of researchers. Cancer cells secrete exosomes containing proteins and RNA. These factors can influence tumor development by directly targeting cancer cells and tumor stroma. In this study, we determined the effects of a peptide as an inhibitor of exosome secretion on breast tumors...
January 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28074019/point-organ-radiation-dose-in-abdominal-ct-effect-of-patient-off-centering-in-an-experimental-human-cadaver-study
#5
Ranish Deedar Ali Khawaja, Sarabjeet Singh, Atul Padole, Alexi Otrakji, Diego Lira, Da Zhang, Bob Liu, Andrew Primak, George Xu, Mannudeep K Kalra
To determine the effect of patient off-centering on point organ radiation dose measurements in a human cadaver scanned with routine abdominal CT protocol. A human cadaver (88 years, body-mass-index 20 kg/m(2)) was scanned with routine abdominal CT protocol on 128-slice dual source MDCT (Definition Flash, Siemens). A total of 18 scans were performed using two scan protocols (a) 120 kV-200 mAs fixed-mA (CTDIvol 14 mGy) (b) 120 kV-125 ref mAs (7 mGy) with automatic exposure control (AEC, CareDose 4D) at three different positions (a) gantry isocenter, (b) upward off-centering and (c) downward off-centering...
January 10, 2017: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/28073186/factors-affecting-the-course-of-body-and-kidney-growth-in-infants-with-urolithiasis-a-critical-long-term-evaluation
#6
Kemal Sarica, Fatma Narter, Kubilay Sabuncu, Ahmet Akca, Utku Can, Ayse Buz, H Nese Sarica, Bilal Eryildirim
OBJECTIVE: To investigate the possible effects of dietary, patient and stone related factors on the clinical course of the stone disease as well as the body and renal growth status of the infants. PATIENTS AND METHODS: A total of 50 children with an history of stone disease during infancy period were studied. Patient (anatomical abnormalities, urinary tract infection - UTI, associated morbidities), stone (obstruction, UTI and required interventions) and lastly dietary (duration of sole breast feeding, formula feeding) related factors which may affect the clinical course of the disease were all evaluated for their effects on the body and renal growth during long-term follow-up...
December 30, 2016: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/28069692/genes-involved-in-development-and-differentiation-are-commonly-methylated-in-cancers-derived-from-multiple-organs-a-single-institutional-methylome-analysis-using-1007-tissue-specimens
#7
Kentaro Ohara, Eri Arai, Yoriko Takahashi, Nanako Ito, Ayako Shibuya, Koji Tsuta, Ryoji Kushima, Hitoshi Tsuda, Hidenori Ojima, Hiroyuki Fujimoto, Shun-Ichi Watanabe, Hitoshi Katai, Takayuki Kinoshita, Tatsuhiro Shibata, Takashi Kohno, Yae Kanai
The aim of this study was to clarify the significance of DNA methylation alterations shared by cancers derived from multiple organs. We analyzed single-institutional methylome data by single-CpG-resolution Infinium assay for 1,007 samples of non-cancerous tissue (N) and corresponding cancerous tissue (T) obtained from lung, stomach, kidney, breast and liver. Principal component analysis revealed that N samples of each organ showed distinct DNA methylation profiles, DNA methylation profiles of N samples of each organ being inherited by the corresponding T samples and DNA methylation profiles of T samples being more similar to those of N samples in the same organ than those of T samples in other organs...
January 9, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28060448/design-of-a-mestranol-2-n-piperazino-substituted-derivative-showing-potent-and-selective-in%C3%A2-vitro-and-in%C3%A2-vivo-activities-in-mcf-7-breast-cancer-models
#8
Martin Perreault, René Maltais, Jenny Roy, Raphaël Dutour, Donald Poirier
Anticancer structure-activity relationship studies on aminosteroid (5α-androstane) derivatives have emerged with a promising lead candidate: RM-133 (2β-[1-(quinoline-2-carbonyl)pyrrolidine-2-carbonyl]-N-piperazine-5α-androstane-3α,17β-diol), which possesses high in vitro and in vivo activities against several cancer cells, and selectivity over normal cells. However, the relatively weak metabolic stability of RM-133 has been a drawback to its progression toward clinical trials. We investigated the replacement of the androstane backbone by a more stable mestranol moiety...
January 6, 2017: ChemMedChem
https://www.readbyqxmd.com/read/28056852/non-dialysis-dependent-chronic-kidney-disease-is-associated-with-high-total-and-out-of-pocket-healthcare-expenditures
#9
Christina Small, Holly J Kramer, Karen A Griffin, Kavitha Vellanki, David J Leehey, Vinod K Bansal, Talar W Markossian
BACKGROUND: Previous studies have documented the high costs of non-dialysis dependent chronic kidney disease (CKD) but out-of-pocket healthcare expenditures remain poorly explored. This study described total direct and out-of-pocket expenditures for adults with non-dialysis dependent CKD and compared expenditures with those for cancer or stroke. METHODS: This study used data from the 2011-2013 Medical Expenditure Panel Survey, a national survey of healthcare expenditures in the U...
January 5, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28052685/occurrence-of-malignancies-after-kidney-transplantation-in-adults-slovak-multicenter-experience
#10
Z Zilinska, M Sersenova, M Chrastina, J Breza Sr, L Bena, T Baltesova, A Jurcina, R Roland, E Lackova, M Cellar, L Laca, I Dedinska
Malignancies are one of the three major causes of renal recipient´s death with a functioning graft after cardiovascular diseases and infections. Among the variety of risk factors, including conventional and specific to transplant recipients, the duration of immunosuppressive therapy, the intensity of therapy, and the type of immunosuppressive agent all have an impact on development of post-transplant malignancy. The aim of our retrospective study was to document the incidence, the type of malignancies, the patient/graft survival in the group of kidney transplant recipients in Slovak Republic, and to identify the factors which influenced the outcome...
January 5, 2017: Neoplasma
https://www.readbyqxmd.com/read/28052005/bortezomib-augments-lymphocyte-stimulatory-cytokine-signaling-in-the-tumor-microenvironment-to-sustain-cd8-t-cell-antitumor-function
#11
Samuel T Pellom, Duafalia F Dudimah, Menaka C Thounaojam, Roman V Uzhachenko, Ashutosh Singhal, Ann Richmond, Anil Shanker
Tumor-induced immune tolerance poses a major challenge for therapeutic interventions aimed to manage cancer. We explored approaches to overcome T-cell suppression in murine breast and kidney adenocarcinomas, and lung fibrosarcoma expressing immunogenic antigens. We observed that treatment with a reversible proteasome inhibitor bortezomib (1 mg/kg body weight) in tumor-bearing mice significantly enhanced the expression of lymphocyte-stimulatory cytokines IL-2, IL-12, and IL-15. Notably, bortezomib administration reduced pulmonary nodules of mammary adenocarcinoma 4T1...
December 29, 2016: Oncotarget
https://www.readbyqxmd.com/read/28049394/coexistence-of-amyloidosis-and-primary-sj%C3%A3-gren-s-syndrome-an-overview-amyloidosis-and-sj%C3%A3-gren-s-syndrome
#12
Gabriela Hernandez-Molina, David Faz-Muñoz, Miguel Astudillo-Angel, Alejandra Iturralde-Chávez, Edgardo Reyes
BACKGROUND: The association of primary Sjögren´s syndrome (SS) and amyloidosis has been recognized but scarcely assessed. OBJECTIVE: Herein we analyzed the literature regarding this association in order to describe a SS phenotype prone to both conditions. METHODS: PubMed and CINAHL databases were searched from inception until April 2016 for the key words: amyloidosis, amyloid, Sjögren's syndrome and their combinations. RESULTS: Most of the cases corresponded to localized amyloidosis mainly at skin and lung, whereas only three cases were systemic...
January 3, 2017: Current Rheumatology Reviews
https://www.readbyqxmd.com/read/28046496/tu-h-bra-09-relationship-between-b0-and-the-contrast-to-noise-ratio-cnr-of-tumour-to-background-for-mri-radiotherapy-hybrids
#13
K Wachowicz, N DeZanche, E Yip, V Volotovskyy, B Fallone
PURPOSE: To investigate the relationship in MRI between B0 and the contrast-to-noise ratio (CNR) of various tumour/normal tissue pairs. This study is motivated by the current interest in MRI/radiotherapy hybrids, for which multiple magnetic field strengths have been proposed. CNR is the single most important parameter governing the ability of a system to identify a tumour in real time for treatment guidance. The MRI community has long since recognized that the SNR of a well-designed MR system is roughly proportional to B0 , the polarizing magnetic field...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28033509/atlas-based-segmentation-in-breast-cancer-radiotherapy-evaluation-of-specific-and-generic-purpose-atlases
#14
Delia Ciardo, Marianna Alessandra Gerardi, Sabrina Vigorito, Anna Morra, Veronica Dell'acqua, Federico Javier Diaz, Federica Cattani, Paolo Zaffino, Rosalinda Ricotti, Maria Francesca Spadea, Marco Riboldi, Roberto Orecchia, Guido Baroni, Maria Cristina Leonardi, Barbara Alicja Jereczek-Fossa
OBJECTIVES: Atlas-based automatic segmentation (ABAS) addresses the challenges of accuracy and reliability in manual segmentation. We aim to evaluate the contribution of specific-purpose in ABAS of breast cancer (BC) patients with respect to generic-purpose libraries. MATERIALS AND METHODS: One generic-purpose and 9 specific-purpose libraries, stratified according to type of surgery and size of thorax circumference, were obtained from the computed tomography of 200 BC patients...
December 26, 2016: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/28030702/effect-of-longer-interval-vs-standard-dosing-of-zoledronic-acid-on-skeletal-events-in-patients-with-bone-metastases-a-randomized-clinical-trial
#15
Andrew L Himelstein, Jared C Foster, James L Khatcheressian, John D Roberts, Drew K Seisler, Paul J Novotny, Rui Qin, Ronald S Go, Stephen S Grubbs, Tracey O'Connor, Mario R Velasco, Douglas Weckstein, Ann O'Mara, Charles L Loprinzi, Charles L Shapiro
Importance: Zoledronic acid, a third-generation aminobisphosphonate, reduces the incidence of skeletal-related events and pain in patients with bone metastases. The optimal dosing interval for zoledronic acid is uncertain. Objective: To determine whether zoledronic acid administered every 12 weeks is noninferior to zoledronic acid administered every 4 weeks. Design, Setting, Participants: Randomized, open-label clinical trial conducted at 269 academic and community sites in the United States...
3, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28001329/fna-biopsy-of-secondary-nonlymphomatous-malignancies-in-salivary-glands-a-multi-institutional-study-of-184-cases
#16
He Wang, Raza S Hoda, William Faquin, Esther Diana Rossi, Nihar Hotchandani, Tianlin Sun, Marc Pusztaszeri, Tommaso Bizzarro, Massimo Bongiovanni, Viren Patel, Nirag Jhala, Guido Fadda, Yun Gong
BACKGROUND: Secondary malignancies of salivary glands (SMSGs) are among the most common malignant neoplasms to involve the salivary glands. Fine-needle aspiration biopsy (FNAB) of SMSG can present diagnostic challenges. The current report presents the largest such FNAB series to date. METHODS: A search of the pathology database from 6 academic institutions identified 184 FNAB cases of nonlymphomatous SMSG. RESULTS: Of the 184 cases, 171 were of the parotid glands, and 13 were of the submandibular glands; 130 patients were men, and 54 were women, and the mean patient age at diagnosis was 68 years...
December 21, 2016: Cancer
https://www.readbyqxmd.com/read/28001084/resveratrol-as-an-anticancer-agent-a-review
#17
Abdur Rauf, Muhammad Imran, Masood Sadiq Butt, Muhammad Nadeem, Dennis G Peters, Mohammad S Mubarak
Owing to their antimicrobial, antioxidant, and anti-inflammatory activity, grapes (Vitis vinifera L.) are the archetypal paradigms of fruits used not only for nutritional purposes but also for exclusive therapeutics. Grapes are a prominent and promising source of phytochemicals, especially resveratrol, a phytoalexin antioxidant found in red grapes which has both chemopreventive and therapeutic effects against various ailments. Resveratrol's role in reducing different human cancers, including breast, cervical, uterine, blood, kidney, liver, eye, bladder, thyroid, esophageal, prostate, brain, lung, skin, gastric, colon, head and neck, bone, ovarian, and cervical, has been reviewed...
December 21, 2016: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/27996311/evaluating-the-application-of-tissue-specific-dose-kernels-instead-of-water-dose-kernels-in-internal-dosimetry-a-monte-carlo-study
#18
Maryam Khazaee Moghadam, Alireza Kamali Asl, Parham Geramifar, Habib Zaidi
PURPOSE: The aim of this work is to evaluate the application of tissue-specific dose kernels instead of water dose kernels to improve the accuracy of patient-specific dosimetry by taking tissue heterogeneities into consideration. MATERIALS AND METHODS: Tissue-specific dose point kernels (DPKs) and dose voxel kernels (DVKs) for yttrium-90 ((90)Y), lutetium-177 ((177)Lu), and phosphorus-32 ((32)P) are calculated using the Monte Carlo (MC) simulation code GATE (version 7)...
December 2016: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/27993102/pharmacokinetics-and-tissue-depletion-of-doxycycline-administered-at-high-dosage-to-broiler-chickens-via-the-drinking-water
#19
Pai-Feng Hsiao, Shao-Kuang Chang, Tien-Huan Hsu, Kuang-Po Li, Chi-Chung Chou
The recommended use of doxycycline (DC) to broiler chicken is 100 mg/L via the drinking water and a 7-day withdrawal time (WDT). However, study of a higher dosage is desirable because of the possible increase of antimicrobial resistance and disease spectrum. Tissue DC residues exceeding the current maximum residue levels (MRL) was our major concern. Therefore, serum concentration and tissue depletion of DC hyclate after administration of 200 mg/L of DC in the drinking water for five consecutive days were studied...
December 2016: Acta Veterinaria Hungarica
https://www.readbyqxmd.com/read/27992981/-years-of-life-lost-as-a-measure-of-cancer-burden-in-colombia-1997-2012
#20
Esther De Vries, María Ximena Meneses, Marion Piñeros
INTRODUCTION: There is hardly any information regarding years of life lost due to cancer in Colombia. OBJECTIVE: To quantify total and average years of life lost due to cancer in Colombia, and to investigate changes in this burden between 1997 and 2012. MATERIALS AND METHODS: We obtained sex-specific data on age distribution, remaining life expectancy, deaths due to specific cancers and total number of deaths from the Colombian Departamento Administrativo Nacional de Estadísticas...
December 1, 2016: Biomédica: Revista del Instituto Nacional de Salud
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