Genome profiling of ovarian adenocarcinomas using pangenomic BACs microarray comparative genomic hybridization

<p>Abstract</p> <p>Background</p> <p>Routine cytogenetic investigations for ovarian cancers are limited by culture failure and poor growth of cancer cells compared to normal cells. Fluorescence <it>in situ </it>Hybridization (FISH) application or classical comparative genome hybridization techniques are also have their own limitations in detecting genome imbalance especially for small changes that are not known ahead of time and for which FISH probes could not be thus designed.</p> <p>Methods</p> <p>We applied microarray comparative genomic hybridization (A-CGH) using one mega base BAC arrays to investigate chromosomal disorders in ovarian adenocarcinoma in patients with familial history.</p> <p>Results</p> <p>Our data on 10 cases of ovarian cancer revealed losses of 6q (4 cases mainly mosaic loss), 9p (4 cases), 10q (3 cases), 21q (3 cases), 22q (4 cases) with association to a monosomy X and gains of 8q and 9q (occurring together in 8 cases) and gain of 12p. There were other abnormalities such as loss of 17p that were noted in two profiles of the studied cases. Total or mosaic segmental gain of 2p, 3q, 4q, 7q and 13q were also observed. Seven of 10 patients were investigated by FISH to control array CGH results. The FISH data showed a concordance between the 2 methods.</p> <p>Conclusion</p> <p>The data suggest that A-CGH detects unique and common abnormalities with certain exceptions such as tetraploidy and balanced translocation, which may lead to understanding progression of genetic changes as well as aid in early diagnosis and have an impact on therapy and prognosis.</p

Broad Band Observations of Gravitationally Lensed Blazar during a Gamma-Ray Outburst

QSO B0218+357 is a gravitationally lensed blazar located at a cosmological redshift of 0.944. In July 2014 a GeV flare was observed by Fermi-LAT, triggering follow-up observations with the MAGIC telescopes at energies above 100 GeV. The MAGIC observations at the expected time of arrival of the trailing component resulted in the first detection of QSO B0218+ 357 in Very-High-Energy (VHE, >100 GeV) gamma rays. We report here the observed multiwavelength emission during the 2014 flare.</p

Broad Band Observations of Gravitationally Lensed Blazar during a Gamma-Ray Outburst

QSO B0218+357 is a gravitationally lensed blazar located at a cosmological redshift of 0.944. In July 2014 a GeV flare was observed by Fermi-LAT, triggering follow-up observations with the MAGIC telescopes at energies above 100 GeV. The MAGIC observations at the expected time of arrival of the trailing component resulted in the first detection of QSO B0218+357 in Very-High-Energy (VHE, >100 GeV) gamma rays. We report here the observed multiwavelength emission during the 2014 flare

Exploring European Writing Cultures : Country Reports on Genres, Writing Practices and Languages Used in European Higher Education

At European universities, writing is a traditional way of learning, assessment, and independent study, but it is handled in an implicit, tradition-based way that has only recently been contrasted with and supported by a more explicit writing ped-agogy. Still, little systematic knowledge is available about the pedagogical ap-proaches to writing, writing practices, and genres across Europe and much of it is codified in the national languages without correlation to internationally accept-ed terminology and theories. This book explores the writing cultures of Europe, nation by nation, and reports the idiosyncrasies for each respective country. The reports are based on a 17-item topic list used by the authors to collect data be-fore synthesizing the results. Next to writing practices and genres, a high level of emphasis was placed on the structure of educational systems, the languages in use, and the kind of support provided for student writers. Note: This research project has been conducted within the framework of COST Action IS0703 “European Research Network on Learning to Write Effectively”, funded by the European Union. We are also thankful to Christiane Donahue, Eliza Kitis, Charles Bazerman, Helmut Gruber, and David Russell for their cooperation and support in this project.Wissenschaftliches Schreiben an europäischen Hochschulen ist eine herkömmliche Form des Lernens, Prüfens und autonomen Studierens, auch wenn es in einer impliziten, eher auf Tradition denn auf bewusster Didaktik beruhenden Weise eingesetzt wird. Wenig auf systematische Weise erhobenes vergleichendes Wissen gibt es bislang über Schreibpraktiken, Genres und schreibdidaktische Ansätze in Europa und das, was an Wissen existiert ist oft in den nationalen Sprachen verfasst, die nicht mit internationalen Terminologien und Theorien der Schreibwissenschaft verbunden sind. Der vorliegende Band untersucht Schreibkulturen in Europa Land für Land und berichtet was jeweils hervorsticht. Die Berichte basieren auf einer 17-Item Themenliste, nach der die Autorenteams Daten über ihr jeweiliges Land sammelten, bevor sie es zu einem Bericht synthetisierten. Neben Schreibpraktiken und Genres werden dabei die Struktur des jeweiligen Bildungssystems, die verwendeten Sprachen und die besondere Schreibdidaktik hervorgehoben. Anmerkung: Das Projekt wurde im Rahmen der COST Aktion IS0703 “European Research Network on Learning to Write Effectively” durchgeführt, das von der EU finanziert wird. Wir bedanken uns bei Christiane Donahue, Eliza Kitis, Charles Bazerman, Helmut Gruber und David Russell für ihre Unterstützung und Mitwirkung in diesem Projekt.At European universities, writing is a traditional way of learning, assessment, and independent study, but it is handled in an implicit, tradition-based way that has only recently been contrasted with and supported by a more explicit writing ped-agogy. Still, little systematic knowledge is available about the pedagogical ap-proaches to writing, writing practices, and genres across Europe and much of it is codified in the national languages without correlation to internationally accept-ed terminology and theories. This book explores the writing cultures of Europe, nation by nation, and reports the idiosyncrasies for each respective country. The reports are based on a 17-item topic list used by the authors to collect data be-fore synthesizing the results. Next to writing practices and genres, a high level of emphasis was placed on the structure of educational systems, the languages in use, and the kind of support provided for student writers. Note: This research project has been conducted within the framework of COST Action IS0703 “European Research Network on Learning to Write Effectively”, funded by the European Union. We are also thankful to Christiane Donahue, Eliza Kitis, Charles Bazerman, Helmut Gruber, and David Russell for their cooperation and support in this project

Global Retinoblastoma Presentation and Analysis by National Income Level.

Importance: Early diagnosis of retinoblastoma, the most common intraocular cancer, can save both a child's life and vision. However, anecdotal evidence suggests that many children across the world are diagnosed late. To our knowledge, the clinical presentation of retinoblastoma has never been assessed on a global scale. Objectives: To report the retinoblastoma stage at diagnosis in patients across the world during a single year, to investigate associations between clinical variables and national income level, and to investigate risk factors for advanced disease at diagnosis. Design, Setting, and Participants: A total of 278 retinoblastoma treatment centers were recruited from June 2017 through December 2018 to participate in a cross-sectional analysis of treatment-naive patients with retinoblastoma who were diagnosed in 2017. Main Outcomes and Measures: Age at presentation, proportion of familial history of retinoblastoma, and tumor stage and metastasis. Results: The cohort included 4351 new patients from 153 countries; the median age at diagnosis was 30.5 (interquartile range, 18.3-45.9) months, and 1976 patients (45.4%) were female. Most patients (n = 3685 [84.7%]) were from low- and middle-income countries (LMICs). Globally, the most common indication for referral was leukocoria (n = 2638 [62.8%]), followed by strabismus (n = 429 [10.2%]) and proptosis (n = 309 [7.4%]). Patients from high-income countries (HICs) were diagnosed at a median age of 14.1 months, with 656 of 666 (98.5%) patients having intraocular retinoblastoma and 2 (0.3%) having metastasis. Patients from low-income countries were diagnosed at a median age of 30.5 months, with 256 of 521 (49.1%) having extraocular retinoblastoma and 94 of 498 (18.9%) having metastasis. Lower national income level was associated with older presentation age, higher proportion of locally advanced disease and distant metastasis, and smaller proportion of familial history of retinoblastoma. Advanced disease at diagnosis was more common in LMICs even after adjusting for age (odds ratio for low-income countries vs upper-middle-income countries and HICs, 17.92 [95% CI, 12.94-24.80], and for lower-middle-income countries vs upper-middle-income countries and HICs, 5.74 [95% CI, 4.30-7.68]). Conclusions and Relevance: This study is estimated to have included more than half of all new retinoblastoma cases worldwide in 2017. Children from LMICs, where the main global retinoblastoma burden lies, presented at an older age with more advanced disease and demonstrated a smaller proportion of familial history of retinoblastoma, likely because many do not reach a childbearing age. Given that retinoblastoma is curable, these data are concerning and mandate intervention at national and international levels. Further studies are needed to investigate factors, other than age at presentation, that may be associated with advanced disease in LMICs

Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements

Robust estimation of bacterial cell count from optical density

Optical density (OD) is widely used to estimate the density of cells in liquid culture, but cannot be compared between instruments without a standardized calibration protocol and is challenging to relate to actual cell count. We address this with an interlaboratory study comparing three simple, low-cost, and highly accessible OD calibration protocols across 244 laboratories, applied to eight strains of constitutive GFP-expressing E. coli. Based on our results, we recommend calibrating OD to estimated cell count using serial dilution of silica microspheres, which produces highly precise calibration (95.5% of residuals &lt;1.2-fold), is easily assessed for quality control, also assesses instrument effective linear range, and can be combined with fluorescence calibration to obtain units of Molecules of Equivalent Fluorescein (MEFL) per cell, allowing direct comparison and data fusion with flow cytometry measurements: in our study, fluorescence per cell measurements showed only a 1.07-fold mean difference between plate reader and flow cytometry data

MAGIC and H.E.S.S. detect VHE gamma rays from the blazar OT081 for the first time: a deep multiwavelength study

https://pos.sissa.it/395/815/pdfPublished versio