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https://www.readbyqxmd.com/read/29776842/-risk-of-axillary-recurrence-after-sentinel-lymph-node-biopsy-before-neoadjuvant-chemotherapy-in-breast-cancer
#1
A Tardieu, C Mesnard, F Margueritte, J Mollard, A Lacorre, Y Aubard, E Deluche, T Gauthier
OBJECTIVES: In case of large breast cancer, neoadjuvant chemotherapy (NAC) can be performed to reduce the size of the tumor and thus perform a conservative surgery. The place of the sentinel lymph node biopsy (SLNB) in case of NAC is still debated. The main aim of this study is to assess the risk of axillary recurrence after negative SLNB before NAC. METHODS: It is a retrospective, observational and uni-centric study. We included 18 to 80-year-old patients with unilateral breast cancer requiring a NAC and with a negative SLNB before NAC...
May 15, 2018: Gynecologie, Obstetrique, Fertilite & Senologie
https://www.readbyqxmd.com/read/29755661/identification-of-copy-number-alterations-in-colon-cancer-from-analysis-of-amplicon-based-next-generation-sequencing-data
#2
Duarte Mendes Oliveira, Gianluca Santamaria, Carmelo Laudanna, Simona Migliozzi, Pietro Zoppoli, Michael Quist, Catie Grasso, Chiara Mignogna, Laura Elia, Maria Concetta Faniello, Cinzia Marinaro, Rosario Sacco, Francesco Corcione, Giuseppe Viglietto, Donatella Malanga, Antonia Rizzuto
The objective of this study was to determine the feasibility to detect copy number alterations in colon cancer samples using Next Generation Sequencing data and to elucidate the association between copy number alterations in specific genes and the development of cancer in different colon segments. We report the successful detection of somatic changes in gene copy number in 37 colon cancer patients by analysis of sequencing data through Amplicon CNA Algorithm. Overall, we have found a total of 748 significant copy number alterations in 230 significant genes, of which 143 showed CN losses and 87 showed CN gains...
April 17, 2018: Oncotarget
https://www.readbyqxmd.com/read/29741737/genetic-and-epigenetic-features-of-rapidly-progressing-idh-mutant-astrocytomas
#3
Timothy E Richardson, Adwait Amod Sathe, Mohammed Kanchwala, Gaoxiang Jia, Amyn A Habib, Guanghua Xiao, Matija Snuderl, Chao Xing, Kimmo J Hatanpaa
IDH-mutant astrocytomas are significantly less aggressive than their IDH-wildtype counterparts. We analyzed The Cancer Genome Atlas dataset (TCGA) and identified a small group of IDH-mutant, WHO grade II-III astrocytomas (n = 14) with an unexpectedly poor prognosis characterized by a rapid progression to glioblastoma and death within 3 years of the initial diagnosis. Compared with IDH-mutant tumors with the typical, extended progression-free survival in a control group of age-similar patients, the tumors in the rapidly progressing group were characterized by a markedly increased level of overall copy number alterations ([CNA]; p = 0...
May 7, 2018: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/29717480/genetic-features-of-multicentric-multifocal-intramucosal-gastric-carcinoma
#4
Aya Mizuguchi, Atsushi Takai, Takahiro Shimizu, Tomonori Matsumoto, Ken Kumagai, Shin'ichi Miyamoto, Hiroshi Seno, Hiroyuki Marusawa
Chronic gastritis caused by Helicobacter pylori (H. pylori) infection could lead to the development of gastric cancer. The finding that multiple gastric cancers can develop synchronously and/or metachronously suggests the development of field cancerization in chronically inflamed, H. pylori-infected gastric mucosa. The genetic basis of multiple tumorigenesis in the inflamed stomach, however, is not well understood. In this study, we analyzed the microsatellite instability (MSI) status and copy number aberrations (CNAs) of 41 multiple intramucosal early gastric cancers that synchronously or metachronously developed in 19 patients with H...
May 1, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29712899/porous-polycarbene-bearing-membrane-actuator-for-ultrasensitive-weak-acid-detection-and-real-time-chemical-reaction-monitoring
#5
Jian-Ke Sun, Weiyi Zhang, Ryan Guterman, Hui-Juan Lin, Jiayin Yuan
Soft actuators with integration of ultrasensitivity and capability of simultaneous interaction with multiple stimuli through an entire event ask for a high level of structure complexity, adaptability, and/or multi-responsiveness, which is a great challenge. Here, we develop a porous polycarbene-bearing membrane actuator built up from ionic complexation between a poly(ionic liquid) and trimesic acid (TA). The actuator features two concurrent structure gradients, i.e., an electrostatic complexation (EC) degree and a density distribution of a carbene-NH3 adduct (CNA) along the membrane cross-section...
April 30, 2018: Nature Communications
https://www.readbyqxmd.com/read/29705526/determination-of-denudation-rates-by-the-measurement-of-meteoric-10-be-in-guadiana-river-sediment-samples-spain-by-low-energy-ams
#6
S Padilla, J M López-Gutiérrez, D M R Sampath, T Boski, J M Nieto, M García-León
The concentration of meteoric 10 Be in estuarine sediment samples has been measured by Spanish Accelerator for Radionuclides Analysis (SARA) at CNA and subsequently used to assess the denudation rate in Guadiana river basin together with the sediment budget method, on both sides of the frontier between Spain and Portugal. The two methods yielded coincident results. The estimation by the 10 Be method gave the denudation rate of (0.76 ± 0.10) × 10-2  cm/y. After correcting for an approximate 80% attenuation of the sediment discharge into the ocean, caused by the river dams, the sediment budget method yielded the rate of (0...
April 26, 2018: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/29700676/ffpe-breast-tumour-blocks-provide-reliable-sources-of-both-germline-and-malignant-dna-for-investigation-of-genetic-determinants-of-individual-tumour-responses-to-treatment
#7
Anna Wilkins, Ritika Chauhan, Alistair Rust, Alex Pearson, Frances Daley, Floriana Manodoro, Kerry Fenwick, Judith Bliss, John Yarnold, Navita Somaiah
BACKGROUND: Bio-banked formalin-fixed paraffin-embedded (FFPE) tissues provide an excellent opportunity for translational genomic research. Historically matched blood has not always been collected as a source of germline DNA. This project aimed to establish if normal FFPE breast tissue could be used as an alternative to blood. METHODS: Exome sequencing was carried out on matched tumour tissue, normal breast tissue and blood on five patients in the START trial. Retrieved samples had been archived at different centres for at least 13 years...
April 26, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29699497/ioncopy-an-r-shiny-app-to-call-copy-number-alterations-in-targeted-ngs-data
#8
Jan Budczies, Nicole Pfarr, Eva Romanovsky, Volker Endris, Albrecht Stenzinger, Carsten Denkert
BACKGROUND: Somatic copy number alterations (CNAs) contribute to the clinically targetable aberrations in the tumor genome. For both routine diagnostics and biomarkers research, CNA analysis in a single assay together with somatic mutations is highly desirable. RESULTS: Ioncopy is a validated method and easy-to-use software for CNA calling from targeted NGS data. Copy number and significance of CNA are estimated for each gene in each sample. Copy number gains and losses are called after multiple testing corrections controlling FWER or FDR...
April 24, 2018: BMC Bioinformatics
https://www.readbyqxmd.com/read/29698604/cytocompatibility-and-cellular-internalization-of-pegylated-clickable-nucleic-acid-oligomers
#9
Alex J Anderson, Erica B Peters, Alex Neumann, Justine Wagner, Benjamin Fairbanks, Stephanie J Bryant, Christopher N Bowman
The recently developed synthetic oligonucleotides referred to as "Click" Nucleic Acids (CNAs) are promising due to their relatively simple synthesis based on thiol-X reactions with numerous potential applications in biotechnology, biodetection, gene silencing, and drug delivery. Here, the cytocompatibility and cellular uptake of rhodamine tagged, PEGylated CNA copolymers (PEG-CNA-RHO) were evaluated. NIH 3T3 fibroblast cells treated for 1 hour with 1, 10 or 100 μg/mL PEG-CNA-RHO maintained an average cell viability of 86%, which was not significantly different from the untreated control...
April 26, 2018: Biomacromolecules
https://www.readbyqxmd.com/read/29691843/a-systems-approach-to-identify-factors-influencing-adverse-drug-events-in-nursing-homes
#10
Ali Azeez Al-Jumaili, William R Doucette
The objectives of the study were to identify the incidence rate and characteristics of adverse drug events (ADEs) in nursing homes (NHs) using the ADE trigger tool and to evaluate the relationships between resident and facility work system factors and incidence of ADEs using the System Engineering Initiative for Patient Safety (SEIPS) model. The study used 2 observational quantitative methods, retrospective resident chart extraction, and surveys. The participating staff included Directors of nursing, registered nurses, certified nurse assistants (CNAs)...
April 24, 2018: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/29677380/end-of-life-education-and-discussions-with-assisted-living-certified-nursing-assistants
#11
Wendy L Mohlman, Kara Dassel, Katherine P Supiano, Michael Caserta
In previous work, the current researchers examined attitudes and experiences of certified nursing assistants (CNAs) providing end-of-life (EOL) care in an assisted living facility (ALF). Results showed that 70% of participating CNAs felt unprepared to provide EOL care, largely due to not having received prior EOL care education within their schools or workplaces. Therefore, the goal of the current study was to implement and evaluate EOL and postmortem education to ALF CNAs. A focus group of 14 CNAs within an ALF was provided EOL education pertaining to the physiological and psychological changes observed in patients nearing EOL and postmortem care...
April 19, 2018: Journal of Gerontological Nursing
https://www.readbyqxmd.com/read/29663366/a-genomic-copy-number-signature-predicts-radiation-exposure-in-post-chernobyl-breast-cancer
#12
Christina M Wilke, Herbert Braselmann, Julia Hess, Sergiy V Klymenko, Vadim V Chumak, Liubov M Zakhartseva, Elena V Bakhanova, Axel K Walch, Martin Selmansberger, Daniel Samaga, Peter Weber, Ludmila Schneider, Falko Fend, Hans C Bösmüller, Horst Zitzelsberger, Kristian Unger
Breast cancer is the second leading cause of cancer death among women worldwide and besides life style, age and genetic risk factors, exposure to ionizing radiation is known to increase the risk for breast cancer. Further, DNA copy number alterations (CNAs), which can result from radiation-induced double-strand breaks, are frequently occurring in breast cancer cells. We set out to identify a signature of CNAs discriminating breast cancers from radiation-exposed and non-exposed female patients. We analyzed resected breast cancer tissues from 68 exposed female Chernobyl clean-up workers and evacuees and 68 matched non-exposed control patients for CNAs by array comparative genomic hybridization analysis (aCGH)...
April 16, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29623525/what-are-the-caregivers-needs-on-dementia-care-an-integrated-qualitative-and-quantitative-assessment
#13
Ilaria Cova, N Travi, L Maggiore, V Cucumo, C Mariani, S Pomati
Dementia is one of the main causes of disability later in life. Interventions in support of patients with dementia aim at granting the highest level of independence in activities of daily living and at delivering the required facilities; formal and informal caregivers represent the interface between patients and health services. The aims of our study were to assess caregivers' perceived needs and to relate them to their own socio-cultural features and to patients' clinical characteristics. During three consecutive months, 50 caregivers of patients with dementia were interviewed about their needs in the assistance of subjects with dementia by means of three structured questionnaires (Caregiver Needs Assessment [CNA], Zarit Burden Inventory [ZBI], Neuropsychiatric Inventory-Questionnaire [NPI-Q]) and of two open-ended questions...
April 5, 2018: Neurological Sciences
https://www.readbyqxmd.com/read/29617660/genomic-pathway-network-and-immunologic-features-distinguishing-squamous-carcinomas
#14
Joshua D Campbell, Christina Yau, Reanne Bowlby, Yuexin Liu, Kevin Brennan, Huihui Fan, Alison M Taylor, Chen Wang, Vonn Walter, Rehan Akbani, Lauren Averett Byers, Chad J Creighton, Cristian Coarfa, Juliann Shih, Andrew D Cherniack, Olivier Gevaert, Marcos Prunello, Hui Shen, Pavana Anur, Jianhong Chen, Hui Cheng, D Neil Hayes, Susan Bullman, Chandra Sekhar Pedamallu, Akinyemi I Ojesina, Sara Sadeghi, Karen L Mungall, A Gordon Robertson, Christopher Benz, Andre Schultz, Rupa S Kanchi, Carl M Gay, Apurva Hegde, Lixia Diao, Jing Wang, Wencai Ma, Pavel Sumazin, Hua-Sheng Chiu, Ting-Wen Chen, Preethi Gunaratne, Larry Donehower, Janet S Rader, Rosemary Zuna, Hikmat Al-Ahmadie, Alexander J Lazar, Elsa R Flores, Kenneth Y Tsai, Jane H Zhou, Anil K Rustgi, Esther Drill, Ronglei Shen, Christopher K Wong, Joshua M Stuart, Peter W Laird, Katherine A Hoadley, John N Weinstein, Myron Peto, Curtis R Pickering, Zhong Chen, Carter Van Waes
This integrated, multiplatform PanCancer Atlas study co-mapped and identified distinguishing molecular features of squamous cell carcinomas (SCCs) from five sites associated with smoking and/or human papillomavirus (HPV). SCCs harbor 3q, 5p, and other recurrent chromosomal copy-number alterations (CNAs), DNA mutations, and/or aberrant methylation of genes and microRNAs, which are correlated with the expression of multi-gene programs linked to squamous cell stemness, epithelial-to-mesenchymal differentiation, growth, genomic integrity, oxidative damage, death, and inflammation...
April 3, 2018: Cell Reports
https://www.readbyqxmd.com/read/29611023/fast-decomposition-of-three-component-spectra-of-fluorescence-quenching-by-white-and-grey-methods-of-data-modeling
#15
Andrzej J Kałka, Andrzej M Turek
'White' and 'grey' methods of data modeling have been employed to resolve the heterogeneous fluorescence from a fluorophore mixture of 9-cyanoanthracene (CNA), 10-chloro-9-cyanoanthracene (ClCNA) and 9,10-dicyanoanthracene (DCNA) into component individual fluorescence spectra. The three-component spectra of fluorescence quenching in methanol were recorded for increasing amounts of lithium bromide used as a quencher. The associated intensity decay profiles of differentially quenched fluorescence of single components were modeled on the basis of a linear Stern-Volmer plot...
April 3, 2018: Journal of Fluorescence
https://www.readbyqxmd.com/read/29608913/shallow-whole-genome-sequencing-for-robust-copy-number-profiling-of-formalin-fixed-paraffin-embedded-breast-cancers
#16
Suet-Feung Chin, Angela Santonja, Marta Grzelak, Soomin Ahn, Stephen-John Sammut, Harry Clifford, Oscar M Rueda, Michelle Pugh, Mae A Goldgraben, Helen A Bardwell, Eun Yoon Cho, Elena Provenzano, Federico Rojo, Emilio Alba, Carlos Caldas
Pathology archives with linked clinical data are an invaluable resource for translational research, with the limitation that most cancer samples are formalin-fixed paraffin-embedded (FFPE) tissues. Therefore, FFPE tissues are an important resource for genomic profiling studies but are under-utilised due to the low amount and quality of extracted nucleic acids. We profiled the copy number landscape of 356 breast cancer patients using DNA extracted FFPE tissues by shallow whole genome sequencing. We generated a total of 491 sequencing libraries from 2 kits and obtained data from 98...
March 30, 2018: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/29593816/pancreatic-like-enzymes-of-microbial-origin-restore-growth-and-normalize-lipid-absorption-in-a-pig-model-with-exocrine-pancreatic-insufficiency
#17
Kateryna Pierzynowska, Jose Valverde-Piedra, Sylwia Szymanczyk, Olena Prykhod'ko, Marek Pieszka, Marek Kardas, Elżbieta Grochowska-Niedworok, Tomasz Grabowski, Mateusz Winiarczyk, Stefan Pierzynowski
Introduction: The standard therapy for exocrine pancreatic insufficiency (EPI) is porcine-derived pancreatic enzyme replacement therapy (PERT). In the present study we tested a new approach with a mixture of pancreatic-like enzymes of microbial origin (PLEM) in a 1-week efficacy study in EPI pigs. In addition to the conventionally used coefficient of fat and nitrogen absorption (CFA and CNA), parameters that more accurately reflect the nutritional and health status, such as changes in the lipemic index (LI), plasma triglyceride (TG) and non-esterified fatty acid (NEFA) levels, and somatic growth, were determined...
March 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29562723/in-silico-integration-approach-to-identify-a-key-mirna-regulating-a-gene-network-in-aggressive-prostate-cancer
#18
Claudia Cava, Gloria Bertoli, Antonio Colaprico, Gianluca Bontempi, Giancarlo Mauri, Isabella Castiglioni
Like other cancer diseases, prostate cancer (PC) is caused by the accumulation of genetic alterations in the cells that drives malignant growth. These alterations are revealed by gene profiling and copy number alteration (CNA) analysis. Moreover, recent evidence suggests that also microRNAs have an important role in PC development. Despite efforts to profile PC, the alterations (gene, CNA, and miRNA) and biological processes that correlate with disease development and progression remain partially elusive. Many gene signatures proposed as diagnostic or prognostic tools in cancer poorly overlap...
March 19, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29560083/impact-of-cna-on-aml-prognosis
#19
EDITORIAL
Fanny Gonzales, Meyling H Cheok
No abstract text is available yet for this article.
February 27, 2018: Oncotarget
https://www.readbyqxmd.com/read/29555573/whole-exome-sequencing-identified-mutational-profiles-of-squamous-cell-carcinomas-of-anus
#20
Sun Shin, Hyeon-Chun Park, Min Sung Kim, Mi-Ryung Han, Sung Hak Lee, Seung Hyun Jung, Sug Hyung Lee, Yeun-Jun Chung
Anal squamous cell carcinoma (ASCC), either with human papillomavirus (HPV) (+) or (-), is a neoplastic disease with frequent recurrence and metastasis. To characterize ASCC genomes, we attempted to disclose novel alterations of ASCC genomes as well as other genetic features including mutation signatures. We performed whole-exome sequencing and copy number alteration (CNA) profiling for 8 ASCC samples from 6 patients (2 cases with primary and recurrent/metastatic tumors). We found known ASCC mutations (TP53, CDKN2A and PIK3CA) and CNAs (gains on 3q and 19q and losses on 11q and 13q)...
March 16, 2018: Human Pathology
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