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https://www.readbyqxmd.com/read/28334554/rapid-establishment-of-the-european-bank-for-induced-pluripotent-stem-cells-ebisc-the-hot-start-experience
#1
Paul A De Sousa, Rachel Steeg, Elisabeth Wachter, Kevin Bruce, Jason King, Marieke Hoeve, Shalinee Khadun, George McConnachie, Julie Holder, Andreas Kurtz, Stefanie Seltmann, Johannes Dewender, Sascha Reimann, Glyn Stacey, Orla O'Shea, Charlotte Chapman, Lyn Healy, Heiko Zimmermann, Bryan Bolton, Trisha Rawat, Isobel Atkin, Anna Veiga, Bernd Kuebler, Blanca Miranda Serano, Tomo Saric, Jürgen Hescheler, Oliver Brüstle, Michael Peitz, Cornelia Thiele, Niels Geijsen, Bjørn Holst, Christian Clausen, Majlinda Lako, Lyle Armstrong, Shailesh K Gupta, Alexander J Kvist, Ryan Hicks, Anna Jonebring, Gabriella Brolén, Andreas Ebneth, Alfredo Cabrera-Socorro, Patrik Foerch, Martine Geraerts, Tina C Stummann, Shawn Harmon, Carol George, Ian Streeter, Laura Clarke, Helen Parkinson, Peter W Harrison, Adam Faulconbridge, Luca Cherubin, Tony Burdett, Cesar Trigueros, Minal J Patel, Christa Lucas, Barry Hardy, Rok Predan, Joh Dokler, Maja Brajnik, Oliver Keminer, Ole Pless, Philip Gribbon, Carsten Claussen, Annette Ringwald, Beate Kreisel, Aidan Courtney, Timothy E Allsopp
A fast track "Hot Start" process was implemented to launch the European Bank for Induced Pluripotent Stem Cells (EBiSC) to provide early release of a range of established control and disease linked human induced pluripotent stem cell (hiPSC) lines. Established practice amongst consortium members was surveyed to arrive at harmonised and publically accessible Standard Operations Procedures (SOPs) for tissue procurement, bio-sample tracking, iPSC expansion, cryopreservation, qualification and distribution to the research community...
March 7, 2017: Stem Cell Research
https://www.readbyqxmd.com/read/28334222/qrank-a-novel-quantile-regression-tool-for-eqtl-discovery
#2
Xiaoyu Song, Gen Li, Zhenwei Zhou, Xianling Wang, Iuliana Ionita-Laza, Ying Wei
Motivation: Over the past decade, there has been a remarkable improvement in our understanding of the role of genetic variation in complex human diseases, especially via genome-wide association studies. However, the underlying molecular mechanisms are still poorly characterized, impending the development of therapeutic interventions. Identifying genetic variants that influence the expression level of a gene, i.e. expression quantitative trait loci (eQTLs), can help us understand how genetic variants influence traits at the molecular level...
March 11, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28322537/what-is-new-in-2017-update-on-fertility-preservation-in-cancer-patients
#3
Katharina Winkler-Crepaz, Bettina Böttcher, Bettina Toth, Ludwig Wildt, Susanne Hofer-Tollinger
Prevention of fertility loss due to cancer treatment as well as non-malignant causes has gained importance during the last decades. Clinically applied modalities for fertility preservation in cancer patients include cryopreservation of oocytes and embryos, the application of GnRH agonists, ovarian tissue banking, and cryopreservation of ejaculated or surgically extracted sperm. In addition, several new possibilities to restore fertility are currently being investigated, such as the establishment of in vitro culture systems for gonadal tissue, the development of artificial gonads, and the application of germline stem cells...
March 21, 2017: Minerva Endocrinologica
https://www.readbyqxmd.com/read/28320689/use-of-the-total-cancer-care-system-to-enrich-screening-for-cd30-positive-solid-tumors-for-patient-enrollment-into-a-brentuximab-vedotin-clinical-trial-a-pilot-study-to-evaluate-feasibility
#4
Bin Li, Steven A Eschrich, Anders Berglund, Melissa Mitchell, David Fenstermacher, Hadi Danaee, Hongyue Dai, Daniel Sullivan, William L Trepicchio, William S Dalton
BACKGROUND: One approach to identify patients who meet specific eligibility criteria for target-based clinical trials is to use patient and tumor registries to prescreen patient populations. OBJECTIVE: Here we demonstrate that the Total Cancer Care (TCC) Protocol, an ongoing, observational study, may provide a solution for rapidly identifying patients with CD30-positive tumors eligible for CD30-targeted therapies such as brentuximab vedotin. METHODS: The TCC patient gene expression profiling database was retrospectively screened for CD30 gene expression determined using HuRSTA-2a520709 Affymetrix arrays (GPL15048)...
March 20, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28315646/procedure-for-horizontal-transfer-of-patient-derived-xenograft-tumors-to-eliminate-corynebacterium-bovis
#5
Christopher A Manuel, Stacey M Bagby, Julie A Reisinger, Umarani Pugazhenthi, Todd M Pitts, Stephen B Keysar, John J Arcaroli, Jori K Leszczynski
Human patient-derived xenograft (PDX) tumors, propagated in immunodeficient mice, are rapidly growing in use as a model for cancer research. Horizontal transfer between mice, without in vitro cell culture, allows these tumors to retain many of their unique characteristics from their individual patient of origin. However, the immunodeficient mouse strains used to grow these tumors are susceptible to numerous opportunistic pathogens, including Corynebacterium bovis. At our institution, 2 in vivo tumor banks of PDX tumors had been maintained within nude mouse colonies enzootically infected with C...
March 1, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28314191/robust-detection-and-segmentation-of-cell-nuclei-in-biomedical-images-based-on-a-computational-topology-framework
#6
Rodrigo Rojas-Moraleda, Wei Xiong, Niels Halama, Katja Breitkopf-Heinlein, Steven Dooley, Luis Salinas, Dieter W Heermann, Nektarios A Valous
The segmentation of cell nuclei is an important step towards the automated analysis of histological images. The presence of a large number of nuclei in whole-slide images necessitates methods that are computationally tractable in addition to being effective. In this work, a method is developed for the robust segmentation of cell nuclei in histological images based on the principles of persistent homology. More specifically, an abstract simplicial homology approach for image segmentation is established. Essentially, the approach deals with the persistence of disconnected sets in the image, thus identifying salient regions that express patterns of persistence...
March 6, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28306601/assessing-the-impact-of-diabetes-mellitus-on-donor-corneal-endothelial-cell-density
#7
Chase A Liaboe, Benjamin T Aldrich, Pamela C Carter, Jessica M Skeie, Kimberlee A Burckart, Gregory A Schmidt, Cynthia R Reed, M Bridget Zimmerman, Mark A Greiner
PURPOSE: To quantify changes in endothelial cell density (ECD) of donor corneal tissue in relation to the presence or absence of a medical history of diabetes mellitus diagnosis, treatment, and complications. METHODS: A retrospective review was performed for all corneas collected at Iowa Lions Eye Bank between January 2012 and December 2015. For purposes of analysis, donor corneas were divided into 4 groups: nondiabetic, non-insulin-dependent diabetic, insulin-dependent diabetic without medical complications due to diabetes, and insulin-dependent diabetic with medical complications due to diabetes...
March 16, 2017: Cornea
https://www.readbyqxmd.com/read/28304083/influence-of-human-papillomavirus-on-the-clinical-presentation-of-oropharyngeal-carcinoma-in-the-united-states
#8
Matthew H Stenmark, Dean Shumway, Cui Guo, Jeffrey Vainshtein, Michelle Mierzwa, Reshma Jagsi, Jennifer J Griggs, Mousumi Banerjee
OBJECTIVE: Much of what is known about the significance of human papillomavirus (HPV) in oropharyngeal squamous cell carcinoma is derived from single-institution retrospective studies, post hoc analyses of tissue specimens from clinical trials, and tissue bank studies with a small sample size. The objective of this study is to investigate the impact of HPV on the frequency and clinical presentation of oropharyngeal carcinoma in a large, national sample with information from patients who underwent HPV testing...
March 17, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28298604/prion-strain-characterization-of-a-novel-subtype-of-creutzfeldt-jakob-disease
#9
Roberta Galeno, Michele Angelo Di Bari, Romolo Nonno, Franco Cardone, Marco Sbriccoli, Silvia Graziano, Loredana Ingrosso, Michele Fiorini, Angelina Valanzano, Giulia Pasini, Anna Poleggi, Ramona Vinci, Anna Ladogana, Maria Puopolo, Salvatore Monaco, Umberto Agrimi, Gianluigi Zanusso, Maurizio Pocchiari
In 2007, we reported a patient with an atypical form of Creutzfeldt-Jakob disease (CJD), heterozygous for methionine-valine (MV) at codon 129, who showed a novel pathological prion protein (PrP(TSE)) conformation with an atypical glycoform (AG) profile and an intraneuronal PrP deposition. In the present study, we further characterized the conformational properties of this pathological prion protein (PrP(TSE) MV(AG)) showing that PrP(TSE) MV(AG) is composed by multiple conformers with biochemical properties distinct from PrP(TSE) type 1 and type 2 of MV sporadic CJD (sCJD)...
March 15, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28295754/age-related-changes-in-the-morphology-of-tanycytes-in-the-human-female-infundibular-nucleus-median-eminence
#10
Anne C M Koopman, Melanie Taziaux, Julie Bakker
Tanycytes have been emerging as key players in the neuroendocrine control of gonadotropin-releasing hormone (GnRH) release. Rodent studies have demonstrated that the structural relationship between tanycytes and GnRH terminals in the median eminence is highly dynamic, regulated by gonadal steroids and undergoes age-related changes. Our objective was to determine whether the number and organization of tanycytes changes throughout life in the female infundibular nucleus/median eminence (INF/ME) region. Post-mortem hypothalamic tissues were collected at the Netherlands Brain Bank and were stained for vimentin by immunohistochemistry...
March 14, 2017: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/28292895/diagnosis-of-prostate-cancer-by-desorption-electrospray-ionization-mass-spectrometric-imaging-of-small-metabolites-and-lipids
#11
Shibdas Banerjee, Richard N Zare, Robert J Tibshirani, Christian A Kunder, Rosalie Nolley, Richard Fan, James D Brooks, Geoffrey A Sonn
Accurate identification of prostate cancer in frozen sections at the time of surgery can be challenging, limiting the surgeon's ability to best determine resection margins during prostatectomy. We performed desorption electrospray ionization mass spectrometry imaging (DESI-MSI) on 54 banked human cancerous and normal prostate tissue specimens to investigate the spatial distribution of a wide variety of small metabolites, carbohydrates, and lipids. In contrast to several previous studies, our method included Krebs cycle intermediates (m/z <200), which we found to be highly informative in distinguishing cancer from benign tissue...
March 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28288261/antioxidant-capacity-and-superoxide-dismutase-activity-in-adrenoleukodystrophy
#12
Bela R Turk, Benjamin E Theisen, Christina L Nemeth, Joel S Marx, Xiaohai Shi, Melissa Rosen, Richard O Jones, Ann B Moser, Paul A Watkins, Gerald V Raymond, Carol Tiffany, Ali Fatemi
Importance: X-linked adrenoleukodystrophy (ALD) may switch phenotype to the fatal cerebral form (ie, cerebral ALD [cALD]), the cause of which is unknown. Determining differences in antioxidant capacity and superoxide dismutase (SOD) levels between phenotypes may allow for the generation of a clinical biomarker for predicting the onset of cALD, as well as initiating a more timely lifesaving therapy. Objective: To identify variations in the levels of antioxidant capacity and SOD activity between ALD phenotypes in patients with cALD or adrenomyeloneuropathy (AMN), heterozygote female carriers, and healthy controls and, in addition, correlate antioxidant levels with clinical outcome scores to determine a possible predictive value...
March 13, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28287994/ensemble-empirical-mode-decomposition-with-principal-component-analysis-a-novel-approach-for-extracting-respiratory-rate-and-heart-rate-from-photoplethysmographic-signal
#13
Mohammod Abdul Motin, Chandan Karmakar, Marimuthu Palaniswami
The photoplethysmographic (PPG) signal measures the local variations of blood volume in tissues, reflecting the peripheral pulse modulated by cardiac activity, respiration and other physiological effects. Therefore, PPG can be used to extract the vital cardiorespiratory signals like heart rate (HR), and respiratory rate (RR) and this will reduce the number of sensors connected to the patient's body for recording these vital signs. In this paper, we propose an algorithm based on ensemble empirical mode decomposition with principal component analysis (EEMD-PCA) as a novel approach to estimate HR and RR simultaneously from PPG signal...
March 7, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28287584/a-microfluidic-flow-chamber-model-for-platelet-transfusion-and-hemostasis-measures-platelet-deposition-and-fibrin-formation-in-real-time
#14
Katrijn R Six, Rosalie Devloo, Britt Van Aelst, Philippe Vandekerckhove, Hendrik B Feys, Veerle Compernolle
Microfluidic models of hemostasis assess platelet function under conditions of hydrodynamic shear, but in the presence of anticoagulants, this analysis is restricted to platelet deposition only. The intricate relationship between Ca(2+)-dependent coagulation and platelet function requires careful and controlled recalcification of blood prior to analysis. Our setup uses a Y-shaped mixing channel, which supplies concentrated Ca(2+)/Mg(2+) buffer to flowing blood just prior to perfusion, enabling rapid recalcification without sample stasis...
February 14, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28269118/an-eemd-pca-approach-to-extract-heart-rate-respiratory-rate-and-respiratory-activity-from-ppg-signal
#15
Mohammod Abdul Motin, Chandan Kumar Karmakar, Marimuthu Palaniswami
The pulse oximeter's photoplethysmographic (PPG) signals, measure the local variations of blood volume in tissues, reflecting the peripheral pulse modulated by cardiac activity, respiration and other physiological effects. Therefore, PPG can be used to extract the vital cardiorespiratory signals like heart rate (HR), respiratory rate (RR) and respiratory activity (RA) and this will reduce the number of sensors connected to the patient's body for recording vital signs. In this paper, we propose an algorithm based on ensemble empirical mode decomposition with principal component analysis (EEMD-PCA) as a novel approach to estimate HR, RR and RA simultaneously from PPG signal...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28267776/evaluation-of-allograft-contamination-and-decontamination-at-the-treviso-tissue-bank-foundation-a-retrospective-study-of-11-129-tissues
#16
Adolfo Paolin, Diletta Trojan, Pieter Petit, Paola Coato, Roberto Rigoli
Microbiological contamination of retrieved tissues has become a very important topic and a critical aspect in the safety of allografts. We have analysed contamination in 11,129 tissues with a longitudinal contamination profile for each individual tissue. More specifically, 10,035 musculoskeletal tissues and 1,094 cardiovascular tissues were retrieved from a total of 763 multi-tissue donors, of whom 105 were heart-beating donors as well as organ donors, while the remaining 658 were non-heart beating donors and tissue donors only...
2017: PloS One
https://www.readbyqxmd.com/read/28265333/fertility-preservation-options-for-children-and-adolescents-with-cancer
#17
REVIEW
Rodrigo L P Romao, Armando J Lorenzo
INTRODUCTION: Cancer in children and adolescents has seen a stark rise in survival rates in the last decades; overall survival in excess of 80% can be reasonably expected for many newly diagnosed patients with malignancies in this age group. Survivorship has unfolded several specific issues faced by these patients, including fertility concerns. Hence, fertility preservation efforts have been discussed and undertaken with increased frequency. METHODS: In this article, the authors provide a broad overview of the current recommendations surrounding fertility preservation in this patient population...
January 2017: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28263131/factors-and-practice-patterns-that-affect-the-decision-for-vasoepididymostomy
#18
Kevin A Ostrowski, Nicholas N Tadros, A Scott Polackwich, R Dale McClure, Eugene F Fuchs, Jason C Hedges
INTRODUCTION: To determine the factors used to make the decision between vasovasostomy (VV) and vasoepididymostomy (VE) by leaders performing microsurgical vasectomy reversal using a questionnaire. MATERIALS AND METHODS: An online questionnaire was sent to all members of the Society for the Study of Male Reproduction (SSMR), a male reproduction subspecialty society of the AUA, using the SurveyMonkey platform. RESULTS: Sixty-seven surgeons responded to the questionnaire (27% of SSMR members)...
February 2017: Canadian Journal of Urology
https://www.readbyqxmd.com/read/28257386/rapid-warming-of-donor-corneas-is-safe-and-improves-specular-image-quality
#19
Khoa D Tran, Jameson Clover, Amy Ansin, Christopher G Stoeger, Mark A Terry
PURPOSE: To determine whether warming donor corneas to near-physiological temperatures can safely shorten warming times while providing high-quality specular images during tissue evaluation. METHODS: Mated corneas were warmed at room temperature (RT) or at 35°C for 4 hours upon removal from cold storage. Specular images and endothelial cell densities were acquired and rated every hour. Additional mated corneas were subjected to 2 rounds of 4-hour incubation at either RT or 35°C...
March 1, 2017: Cornea
https://www.readbyqxmd.com/read/28255773/cell-lines-authentication-and-mycoplasma-detection-as-minimun-quality-control-of-cell-lines-in-biobanking
#20
C Corral-Vázquez, R Aguilar-Quesada, P Catalina, G Lucena-Aguilar, G Ligero, B Miranda, J A Carrillo-Ávila
Establishment of continuous cell lines from human normal and tumor tissues is an extended and useful methodology for molecular characterization of cancer pathophysiology and drug development in research laboratories. The exchange of these cell lines between different labs is a common practice that can compromise assays reliability due to contamination with microorganism such as mycoplasma or cells from different flasks that compromise experiment reproducibility and reliability. Great proportions of cell lines are contaminated with mycoplasma and/or are replaced by cells derived for a different origin during processing or distribution process...
March 2, 2017: Cell and Tissue Banking
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