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https://www.readbyqxmd.com/read/28922492/highly-sensitive-detection-of-protein-biomarkers-with-organic-electrochemical-transistors
#1
Ying Fu, Naixiang Wang, Anneng Yang, Helen Ka-Wai Law, Li Li, Feng Yan
The analysis of protein biomarkers is of great importance in the diagnosis of diseases. Although many convenient and low-cost electrochemical approaches have been extensively investigated, they are not sensitive enough in the detection of protein biomarkers with low concentrations in physiological environments. Here, this study reports a novel organic-electrochemical-transistor-based biosensor that can successfully detect cancer protein biomarkers with ultrahigh sensitivity. The devices are operated by detecting electrochemical activity on gate electrodes, which is dependent on the concentrations of proteins labeled with catalytic nanoprobes...
September 18, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28922380/the-warburg-effect-as-an-adaptation-of-cancer-cells-to-rapid-fluctuations-in-energy-demand
#2
Tamir Epstein, Robert A Gatenby, Joel S Brown
To maintain optimal fitness, a cell must balance the risk of inadequate energy reserve for response to a potentially fatal perturbation against the long-term cost of maintaining high concentrations of ATP to meet occasional spikes in demand. Here we apply a game theoretic approach to address the dynamics of energy production and expenditure in eukaryotic cells. Conventionally, glucose metabolism is viewed as a function of oxygen concentrations in which the more efficient oxidation of glucose to CO2 and H2O produces all or nearly all ATP except under hypoxic conditions when less efficient (2 ATP/ glucose vs...
2017: PloS One
https://www.readbyqxmd.com/read/28922285/what-where-and-why-exploring-fluorodeoxyglucose-pet-s-ability-to-localise-and-differentiate-infection-from-cancer
#3
Abby Douglas, Eddie Lau, Karin Thursky, Monica Slavin
PURPOSE OF REVIEW: To review the utility of FDG-PET imaging in detecting the cause of fever and infection in patients with cancer. RECENT FINDINGS: FDG-PET has been shown to have high sensitivity and accuracy for causes of neutropenic fever, leading to higher diagnostic certainty in this group. Recent advances in pathogen-specific labelling in PET to identify Aspergillus spp. and Yersinia spp. infections in mice, as well as differentiating between Gram-positive, Gram-negative and mycobacterial infections are promising...
September 15, 2017: Current Opinion in Infectious Diseases
https://www.readbyqxmd.com/read/28921820/systematic-review-and-network-meta-analysis-on-the-relative-efficacy-of-osteoporotic-medications-men-with-prostate-cancer-on-continuous-androgen-deprivation-therapy%C3%A2-to-reduce-risk-of-fragility-fractures
#4
REVIEW
Yeesha Poon, Petros Pechlivanoglou, Shabbir M H Alibhai, David Naimark, Jeffrey S Hoch, Emmanuel Papadimitropoulos, Mary-Ellen Hogan, Murray Krahn
BACKGROUND: Androgen deprivation therapy (ADT) is an effective treatment for men with advanced prostate cancer, but loss of bone mineral density (BMD) is a major risk factor for fractures. This analysis evaluated the relative effectiveness of osteoporosis treatments using BMD as a surrogate endpoint for fragility fractures in men on continuous ADT. METHOD: We included randomized controlled trials studying bisphosphonates, denosumab, toremifene, and raloxifene in patients with non-metastatic prostate cancer on ADT for review...
September 18, 2017: BJU International
https://www.readbyqxmd.com/read/28921304/expression-and-purification-of-an-fgf9-fusion-protein-in-e-coli-and-the-effects-of-the-fgf9-subfamily-on-human-hepatocellular-carcinoma-cell-proliferation-and-migration
#5
Shen Wang, Haipeng Lin, Tiantian Zhao, Sisi Huang, David G Fernig, Nuo Xu, Fenfang Wu, Mi Zhou, Chao Jiang, Haishan Tian
Fibroblast growth factor (FGF) 9 has oncogenic activity and plays an important role in the development of ovarian, lung, prostate, and gastric cancers. In the present study, with the aim of reducing the cost of utilizing growth factors in cancer research, a simple and efficient method for the preparation of recombinant human (rh)FGF9 in Escherichia coli was established. The rhFGF9 fusion protein (6 × His-TEV-rhFGF9) and the native protein released by tobacco etch virus (TEV) protease were obtained using a Ni-NTA system, with > 95% purity...
September 18, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28919468/a-copper-based-enzyme-free-fluorescence-elisa-for-her2-detection
#6
Shiyu Tian, Ke Zeng, Aijun Yang, Qin Wang, Minghui Yang
We reported an enzyme-free ELISA to detect breast cancer biomarker human epidermal growth factor receptor 2 (HER2) in human serum samples. Instead of enzymes (such as horseradish peroxidase) used in traditional ELISA, CuO nanoparticles were utilized as the signal probe. Compared to traditional enzymes, CuO nanoparticles have the advantages of low cost and good stability. After dissolving CuO nanoparticles with acid, the Cu (II) ions generated catalyzed the reaction of o-phenylenediamine with ascorbic acid to produce fluorescent quinoxaline derivative molecules...
September 14, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28918408/effectiveness-cost-utility-and-implementation-of-a-decision-aid-for-patients-with-localised-prostate-cancer-and-their-partners-study-protocol-of-a-stepped-wedge-cluster-randomised-controlled-trial
#7
Hoda H M Al-Itejawi, Cornelia F van Uden-Kraan, Peter M van de Ven, Veerle M H Coupé, André N Vis, Jakko A Nieuwenhuijzen, Jeroen A van Moorselaar, Irma M Verdonck-de Leeuw
INTRODUCTION: Patient decision aids (PDAs) have been developed to help patients make an informed choice for a treatment option. Despite proven benefits, structural implementation falls short of expectations. The present study aims to assess the effectiveness and cost-utility of the PDA among newly diagnosed patients with localised prostate cancer and their partners, alongside implementation of the PDA in routine care. METHODS/ANALYSIS: A stepped-wedge cluster randomised trial will be conducted...
September 15, 2017: BMJ Open
https://www.readbyqxmd.com/read/28917949/linear-association-between-number-of-modifiable-risk-factors-and-multiple-chronic-conditions-results-from-the-behavioral-risk-factor-surveillance-system
#8
Mary L Adams, Joseph Grandpre, David L Katz, Douglas Shenson
Multiple (≥2) chronic conditions (MCCs) are responsible for a large fraction of healthcare costs. Our aim was to examine possible associations between MCCs and composite measures of behavioral risk factors (RFs). Data were publicly available 2013 Behavioral Risk Factor Surveillance System and included 483,865 non-institutionalized US adults ages ≥18years. Chronic conditions included asthma, arthritis, chronic obstructive pulmonary disease, cognitive impairment, heart disease, stroke, cancer, and kidney disease...
September 13, 2017: Preventive Medicine
https://www.readbyqxmd.com/read/28917551/-impact-of-the-preservation-of-the-branches-of-intercostobrachial-nerve-on-the-quality-of-life-of-patients-operated-for-a-breast-cancer
#9
Zenaba Saleh, Julia Salleron, Sandrine Baffert, Alain Paveau, Jean-Marc Classe, Frédéric Marchal
AIM: The aim of this study was to assess the impact of the preservation of the intercostobrachial nerve on the quality of life of patients operated for breast cancer. METHODS: This study was ancillary to cost comparison study of axillary sentinel lymph node detection and axillary lymphadenectomy in early breast cancer. It was a prospective multicenter, observational, non-randomized study. The quality of life was assessed using two questionnaires: QLQ-C30 and specific module QLQ-BR23 Surveys have been performed before initiation of surgery, one week, and 1 month, 8 months and 12 months after discharge from hospitalization for the first surgical procedure...
September 13, 2017: Bulletin du Cancer
https://www.readbyqxmd.com/read/28917433/surveillance-imaging-in-patients-with-endometrial-cancer-in-first-remission
#10
Yazan Z Alabed, Su-Chun Cheng, Christopher Mudge, Christopher Sakellis, Annick D Van den Abbeele, Susana M Campos, Heather A Jacene
OBJECTIVE: The clinical benefit of surveillance imaging in endometrial cancer remains undefined. This retrospective study was conducted to evaluate the positive predictive value (PPV) of surveillance imaging in endometrial cancer. METHODS: A total of 128 patients in first remission after treatment for endometrial cancer (uterine papillary serous, clear cell, stage III endometroid) who had surveillance imaging were retrospectively identified. The surveillance period was defined from the time of first-negative scan after treatment to the time when treatment was started for recurrent disease...
August 24, 2017: Current Problems in Diagnostic Radiology
https://www.readbyqxmd.com/read/28917248/stereotactic-body-radiation-therapy-for-prostate-cancer-a-review
#11
Waqar Haque, E Brian Butler, Bin S Teh
Prostate cancer can be managed with external beam radiation therapy, delivered with either protons or photons, brachytherapy, surgery, or active surveillance. Advances in imaging and radiation therapy delivery have allowed treatment of prostate cancer using ultra-hypofractionated radiation therapy with a high dose per fraction using a technique called stereotactic body radiation therapy (SBRT). While no randomized trials have compared the efficacy of SBRT to conventionally fractionated radiation therapy (CFRT), numerous prospective trials and retrospective reviews have demonstrated the safety and efficacy of SBRT for localized prostate cancer, used either definitively or as a boost along with CFRT...
September 2017: Chinese Clinical Oncology
https://www.readbyqxmd.com/read/28916435/a-novel-electrochemical-immunosensor-based-on-ito-modified-by-carboxyl-ended-silane-agent-for-ultrasensitive-detection-of-mage-1-in-human-serum
#12
Aslı Gündoğdu, Elif Burcu Aydın, Mustafa Kemal Sezgintürk
A new, low-cost electrochemical immunosensor was developed for rapid detection of Melanoma-associated antigen 1 (MAGE-1), a cancer biomarker. The fabrication procedure of immunosensor was based on the covalent immobilization of anti-MAGE-1, biorecognition molecule, on ITO electrode by carboxyethylsilanetriol (CTES) monolayer. The biosensing MAGE-1 antigen was monitored by using electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) technique. Apart from these techniques, single frequency impedance (SFI) was used for investigation of antibody-antigen interactions...
September 12, 2017: Analytical Biochemistry
https://www.readbyqxmd.com/read/28916284/stereotactic-body-radiotherapy-versus-low-dose-rate-brachytherapy-for-localised-prostate-cancer-a-cost-utility-analysis
#13
J Helou, S Torres, H B Musunuru, J Raphael, P Cheung, D Vesprini, H T Chung, L D'Alimonte, M Krahn, G Morton, A Loblaw
AIMS: To conduct a cost-utility analysis comparing stereotactic body radiotherapy (SBRT) with low dose rate brachytherapy (LDR-BT) for localised prostate cancer (PCa). MATERIALS AND METHODS: A decision-analytic Markov model was developed from the healthcare payer perspective to simulate the history of a 66-year-old man with low-risk PCa. The model followed patients yearly over their remaining lifetimes. Health states included 'recurrence-free', 'biochemical recurrence' (BR), 'metastatic' and 'death'...
September 12, 2017: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/28915812/the-economic-burden-of-advanced-gastric-cancer-in-taiwan
#14
Jihyung Hong, Yiling Tsai, Diego Novick, Frank Chi-Huang Hsiao, Rebecca Cheng, Jen-Shi Chen
BACKGROUND: Gastric cancer is one of the leading causes of cancer-related deaths in both sexes worldwide, especially in Eastern Asia. This study aimed to estimate the economic burden of advanced gastric cancer (AGC) in Taiwan. METHODS: The costs of AGC in 2013 were estimated using resource use data from a chart review study (n = 122 with AGC) and national statistics. Annual per-patient costs, where patients' follow-up periods were adjusted for, were estimated with 82 patients who had complete resource use data...
September 16, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28915496/solid-phase-microextraction-coupled-to-gas-chromatography-mass-spectrometry-followed-by-multivariate-data-analysis-for-the-identification-of-volatile-organic-compounds-as-possible-biomarkers-in-lung-cancer-tissues
#15
Federica Bianchi, Nicolò Riboni, Paolo Carbognani, Letizia Gnetti, Enrico Dalcanale, Luca Ampollini, Maria Careri
Solid-phase microextraction and gas chromatography-mass spectrometry followed by multivariate data analysis were used to analyze lung tissues from both healthy and carcinogenic patients. A total of 78 volatile compounds belonging to different chemical classes were identified, seven of which were able to discriminate between the two groups. Discriminant analysis allowed to correctly classify 98.3% of the cases. By using the leave-one-method, 100% of the cross-validated samples belonging to the "tumor" group was correctly classified, whereas 2 cross-validated healthy samples out of 48 were erroneously allocated in the "tumor" group...
September 6, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28915337/the-cost-and-cost-effectiveness-of-childhood-cancer-treatment-in-el-salvador-central-america-a-report-from-the-childhood-cancer-2030-network
#16
Soad Fuentes-Alabi, Nickhill Bhakta, Roberto Franklin Vasquez, Sumit Gupta, Susan E Horton
BACKGROUND: Although previous studies have examined the cost of treating individual childhood cancers in low-income and middle-income countries, to the authors' knowledge none has examined the overall cost and cost-effectiveness of operating a childhood cancer treatment center. Herein, the authors examined the cost and sources of financing of a pediatric cancer unit in Hospital Nacional de Ninos Benjamin Bloom in El Salvador, and make estimates of cost-effectiveness. METHODS: Administrative data regarding costs and volumes of inputs were obtained for 2016 for the pediatric cancer unit...
September 15, 2017: Cancer
https://www.readbyqxmd.com/read/28915278/differential-diagnosis-of-seborrheic-keratosis-clinical-and-dermoscopic-features
#17
Ralph P Braun, Sabine Ludwig, Ashfaq A Marghoob
<p>Seborrheic keratosis (SK) is a benign epidermal keratinocytic tumor that is extremely common, particularly in individuals over the age of 50. Most individuals with SK will have more than one lesion and the presence of over 10 lesions in the same person is not uncommon. Although the clinical morphology of most SK with their stuck-on, symmetric, keratotic, and waxy appearance makes them easy to identify, many manifest a morphology resembling melanoma or squamous cell carcinoma. One can argue that such cases will ultimately not prove to be problematic since a simple biopsy will easily reveal their benign nature and eliminate any concerns...
September 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28914440/olaratumab-in-combination-with-doxorubicin-for-the-treatment-of-advanced-soft-tissue-sarcoma-an-evidence-review-group-perspective-of-a-national-institute-for-health-and-care-excellence-single-technology-appraisal
#18
REVIEW
Irina A Tikhonova, Tracey Jones-Hughes, James Dunham, Fiona C Warren, Sophie Robinson, Peter Stephens, Martin Hoyle
The manufacturer of olaratumab (Lartruvo(®)), Eli Lilly & Company Limited, submitted evidence for the clinical and cost effectiveness of this drug, in combination with doxorubicin, for untreated advanced soft tissue sarcoma (STS) not amenable to surgery or radiotherapy, as part of the National Institute for Health and Care Excellence (NICE) Single Technology Appraisal process. The Peninsula Technology Assessment Group, commissioned to act as the Evidence Review Group (ERG), critically reviewed the company's submission...
September 15, 2017: PharmacoEconomics
https://www.readbyqxmd.com/read/28913761/radioactive-seed-localization-versus-wire-guided-localization-for-nonpalpable-breast-cancer-a-cost-and-operating-room-efficiency-analysis
#19
Yimeng Zhang, Jean Seely, Erin Cordeiro, Joshua Hefler, Kednapa Thavorn, Mukta Mahajan, Sue Domina, Jon Aro, Andrea Marie Ibrahim, Angel Arnaout, Denis Gravel, Carolyn Nessim
BACKGROUND: This study aimed to compare the cost and resource use between our first-year experience using breast-conserving surgery (BCS) with radioactive seed localization (RSL) and the previous-year standard practice of BCS with wire-guided localization (WGL) for patients with nonpalpable breast cancer at a large Canadian tertiary center. METHODS: For this retrospective cohort study, data for BCS cases with RSL was collected from 1 April 2015 to 31 March 2016 and for BCS cases with WGL from 1 April 2014 to 31 March 2015...
September 14, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28913697/developing-a-post-treatment-survivorship-care-plan-to-help-breast-cancer-survivors-understand-their-fertility
#20
Jessica R Gorman, Anne K Julian, Samantha A Roberts, Sally A D Romero, Jennifer L Ehren, Michael L Krychman, Sarah G Boles, Jun Mao, H Irene Su
PURPOSE: Reproductive-aged breast cancer survivors (BCS) who have completed initial cancer treatment frequently want to know about their future fertility potential. The purpose of this qualitative study was to assess if the fertility-related content presented in the survivorship care plan prototype met the informational needs of post-treatment BCS and to provide an opportunity for the target audience to review and react to the proposed content and design. METHODS: We conducted and analyzed transcripts from seven focus groups with BCS to evaluate their reactions to the survivorship care plan prototype...
September 14, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
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