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Your search keyword '"Hirst, M."' showing total 575 results
Start Over Author "Hirst, M." Publication Type Academic Journals
575 results on '"Hirst, M."'

2. Epigenomic alterations define lethal CIMP-positive ependymomas of infancy

Author

Mack, SC, Witt, H, Piro, RM, Gu, L, Zuyderduyn, S, Stütz, AM, Wang, X, Gallo, M, Garzia, L, Zayne, K, Zhang, X, Ramaswamy, V, Jäger, N, Jones, DTW, Sill, M, Pugh, TJ, Ryzhova, M, Wani, KM, Shih, DJH, Head, R, Remke, M, Bailey, SD, Zichner, T, Faria, CC, Barszczyk, M, Stark, S, Seker-Cin, H, Hutter, S, Johann, P, Bender, S, Hovestadt, V, Tzaridis, T, Dubuc, AM, Northcott, PA, Peacock, J, Bertrand, KC, Agnihotri, S, Cavalli, FMG, Clarke, I, Nethery-Brokx, K, Creasy, CL, Verma, SK, Koster, J, Wu, X, Yao, Y, Milde, T, Sin-Chan, P, Zuccaro, J, Lau, L, Pereira, S, Castelo-Branco, P, Hirst, M, Marra, MA, Roberts, SS, Fults, D, Massimi, L, Cho, YJ, Van Meter, T, Grajkowska, W, Lach, B, Kulozik, AE, von Deimling, A, Witt, O, Scherer, SW, Fan, X, Muraszko, KM, Kool, M, Pomeroy, SL, Gupta, N, Phillips, J, Huang, A, Tabori, U, Hawkins, C, Malkin, D, Kongkham, PN, Weiss, WA, Jabado, N, Rutka, JT, Bouffet, E, Korbel, JO, Lupien, M, Aldape, KD, Bader, GD, Eils, R, Lichter, P, Dirks, PB, Pfister, SM, Korshunov, A, and Taylor, MD

Subjects
Biological Sciences, Biomedical and Clinical Sciences, Oncology and Carcinogenesis, Genetics, Human Genome, Cancer, Neurosciences, Cancer Genomics, Animals, Brain Neoplasms, CpG Islands, DNA Methylation, Embryonic Stem Cells, Ependymoma, Epigenesis, Genetic, Epigenomics, Female, Gene Expression Regulation, Neoplastic, Gene Silencing, Histones, Humans, Infant, Mice, Mice, Inbred NOD, Mice, SCID, Mutation, Phenotype, Polycomb Repressive Complex 2, Prognosis, Rhombencephalon, Xenograft Model Antitumor Assays, General Science & Technology
Abstract

Ependymomas are common childhood brain tumours that occur throughout the nervous system, but are most common in the paediatric hindbrain. Current standard therapy comprises surgery and radiation, but not cytotoxic chemotherapy as it does not further increase survival. Whole-genome and whole-exome sequencing of 47 hindbrain ependymomas reveals an extremely low mutation rate, and zero significant recurrent somatic single nucleotide variants. Although devoid of recurrent single nucleotide variants and focal copy number aberrations, poor-prognosis hindbrain ependymomas exhibit a CpG island methylator phenotype. Transcriptional silencing driven by CpG methylation converges exclusively on targets of the Polycomb repressive complex 2 which represses expression of differentiation genes through trimethylation of H3K27. CpG island methylator phenotype-positive hindbrain ependymomas are responsive to clinical drugs that target either DNA or H3K27 methylation both in vitro and in vivo. We conclude that epigenetic modifiers are the first rational therapeutic candidates for this deadly malignancy, which is epigenetically deregulated but genetically bland.

Published
2014

3. Vitamin C induces Tet-dependent DNA demethylation and a blastocyst-like state in ES cells

Author

Ramalho-Santos, Miguel, Laird, Diana, Blaschke, K, Ebata, KT, Karimi, MM, Zepeda-Martínez, JA, Goyal, P, Mahapatra, S, Tam, A, Laird, DJ, Hirst, M, and Rao, A

Abstract

DNA methylation is a heritable epigenetic modification involved in gene silencing, imprinting, and the suppression of retrotransposons. Global DNA demethylation occurs in the early embryo and the germ line, and may be mediated by Tet (ten eleven translocat

Published
2013

5. Estimating the health care burden of prescription opioid abuse in five European countries

Author

Shei A, Hirst M, Kirson NY, Enloe CJ, Birnbaum HG, and Dunlop WCN

Subjects
Medicine (General), R5-920, Therapeutics. Pharmacology, RM1-950
Abstract

Amie Shei,1 Matthew Hirst,2 Noam Y Kirson,1 Caroline J Enloe,1 Howard G Birnbaum,1 William C N Dunlop21Analysis Group, Inc., Boston, MA, USA; 2Mundipharma International Limited, Cambridge, UK Background: Opioid abuse, including abuse of prescription opioids (“RxOs”) and illicit substances like heroin, is a serious public health issue in Europe. Currently, there is limited data on the magnitude of RxO abuse in Europe, despite increasing public and scientific interest in the issue. The purpose of this study was to use the best-available data to derive comparable estimates of the health care burden of RxO abuse in France, Germany, Italy, Spain, and the United Kingdom (EU5). Methods: Published data on the prevalence of problem opioid use and the share of opioid abuse patients reporting misuse of non-heroin opioids were used to estimate the prevalence of RxO abuse in the EU5 countries. The costs of RxO abuse were calculated by applying published estimates of the incremental health care costs of opioid abuse to country-specific estimates of the costs of chronic pain conditions. These estimates were input into an economic model that quantified the health care burden of RxO abuse in each of the EU5 countries. Sensitivity analyses examined key assumptions. Results: Based on best-available current data, prevalence estimates of RxO abuse ranged from 0.7 to 13.7 per 10,000 individuals across the EU5 countries. Estimates of the incremental health care costs of RxO abuse ranged from €900 to €2,551 per patient per year. The annual health care cost burden of RxO abuse ranged from €6,264 to €279,927 per 100,000 individuals across the EU5 countries. Conclusion: This study suggests that RxO abuse imposes a cost burden on health systems in the five largest European countries. The extent of RxO abuse in Europe should be monitored given the potential for change over time. Continued efforts should be made to collect reliable data on the prevalence and costs of RxO abuse in Europe to facilitate an accurate characterization of the extent of this potentially growing problem. Keywords: prescription opioids, abuse, prevalence, health care costs

Published
2015

26. Tests For Cancer

Author

Jennings, R. C., Brocklehurst, D., Hirst, M., and Ziros, A.

Published
1969

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