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  • 1
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    Wave systems with direct processes and localized losses or gains: The nonunitary Poisson kernel (2012)
    American Physical Society (APS)
    Details
    Publication Date: 2012-07-10
    Description: Author(s): A. M. Martínez-Argüello, R. A. Méndez-Sánchez, and M. Martínez-Mares We study the scattering of waves in systems with losses or gains simulated by imaginary potentials. This is done for a complex delta potential that corresponds to a spatially localized absorption or amplification. In the Argand plane the scattering matrix moves on a circle C centered on the real axi... [Phys. Rev. E 86, 016207] Published Mon Jul 09, 2012
    Keywords: Chaos and pattern formation
    Print ISSN: 1539-3755
    Electronic ISSN: 1550-2376
    Topics: Physics
    Published by American Physical Society (APS)
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  • 2
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    Impulse-induced optimum control of escape from a metastable state by periodic secondary excitations (2012)
    American Physical Society (APS)
    Details
    Publication Date: 2012-06-21
    Description: Author(s): R. Chacón, J. A. Martínez, and J. J. Miralles We characterize the role of the impulse transmitted (time integral over a half-period) by resonant secondary excitations at controlling (suppressing and enhancing) escape from a potential well, which is induced by periodic primary excitations. By using the universal model of a dissipative Helmholtz ... [Phys. Rev. E 85, 066207] Published Wed Jun 20, 2012
    Keywords: Chaos and pattern formation
    Print ISSN: 1539-3755
    Electronic ISSN: 1550-2376
    Topics: Physics
    Published by American Physical Society (APS)
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  • 3
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    Immunology. Cooperative transcription factor complexes in control (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-11-20
    Description: 〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3621126/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3621126/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martinez, Gustavo J -- Rao, Anjana -- R01 CA042471/CA/NCI NIH HHS/ -- R01 CA42471/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2012 Nov 16;338(6109):891-2. doi: 10.1126/science.1231310.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23161983" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Humans ; Immunomodulation/*genetics ; Interferon Regulatory Factors/*metabolism ; *Regulatory Elements, Transcriptional ; Th17 Cells/*immunology ; Transcription Factor AP-1/*metabolism ; *Transcriptional Activation
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
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    Approaching a state shift in Earth's biosphere (2012)
    Nature Publishing Group (NPG)
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    Publication Date: 2012-06-09
    Description: Localized ecological systems are known to shift abruptly and irreversibly from one state to another when they are forced across critical thresholds. Here we review evidence that the global ecosystem as a whole can react in the same way and is approaching a planetary-scale critical transition as a result of human influence. The plausibility of a planetary-scale 'tipping point' highlights the need to improve biological forecasting by detecting early warning signs of critical transitions on global as well as local scales, and by detecting feedbacks that promote such transitions. It is also necessary to address root causes of how humans are forcing biological changes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barnosky, Anthony D -- Hadly, Elizabeth A -- Bascompte, Jordi -- Berlow, Eric L -- Brown, James H -- Fortelius, Mikael -- Getz, Wayne M -- Harte, John -- Hastings, Alan -- Marquet, Pablo A -- Martinez, Neo D -- Mooers, Arne -- Roopnarine, Peter -- Vermeij, Geerat -- Williams, John W -- Gillespie, Rosemary -- Kitzes, Justin -- Marshall, Charles -- Matzke, Nicholas -- Mindell, David P -- Revilla, Eloy -- Smith, Adam B -- R01 GM069801/GM/NIGMS NIH HHS/ -- England -- Nature. 2012 Jun 6;486(7401):52-8. doi: 10.1038/nature11018.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Integrative Biology, University of California, Berkeley, California 94720, USA. barnosky@berkeley.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22678279" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Climate Change/*statistics & numerical data ; *Earth (Planet) ; *Ecosystem ; Environmental Monitoring ; Forecasting ; Human Activities ; Humans ; *Models, Theoretical
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 5
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    Insights into hominid evolution from the gorilla genome sequence (2012)
    Nature Publishing Group (NPG)
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    Publication Date: 2012-03-09
    Description: Gorillas are humans' closest living relatives after chimpanzees, and are of comparable importance for the study of human origins and evolution. Here we present the assembly and analysis of a genome sequence for the western lowland gorilla, and compare the whole genomes of all extant great ape genera. We propose a synthesis of genetic and fossil evidence consistent with placing the human-chimpanzee and human-chimpanzee-gorilla speciation events at approximately 6 and 10 million years ago. In 30% of the genome, gorilla is closer to human or chimpanzee than the latter are to each other; this is rarer around coding genes, indicating pervasive selection throughout great ape evolution, and has functional consequences in gene expression. A comparison of protein coding genes reveals approximately 500 genes showing accelerated evolution on each of the gorilla, human and chimpanzee lineages, and evidence for parallel acceleration, particularly of genes involved in hearing. We also compare the western and eastern gorilla species, estimating an average sequence divergence time 1.75 million years ago, but with evidence for more recent genetic exchange and a population bottleneck in the eastern species. The use of the genome sequence in these and future analyses will promote a deeper understanding of great ape biology and evolution.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3303130/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3303130/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Scally, Aylwyn -- Dutheil, Julien Y -- Hillier, LaDeana W -- Jordan, Gregory E -- Goodhead, Ian -- Herrero, Javier -- Hobolth, Asger -- Lappalainen, Tuuli -- Mailund, Thomas -- Marques-Bonet, Tomas -- McCarthy, Shane -- Montgomery, Stephen H -- Schwalie, Petra C -- Tang, Y Amy -- Ward, Michelle C -- Xue, Yali -- Yngvadottir, Bryndis -- Alkan, Can -- Andersen, Lars N -- Ayub, Qasim -- Ball, Edward V -- Beal, Kathryn -- Bradley, Brenda J -- Chen, Yuan -- Clee, Chris M -- Fitzgerald, Stephen -- Graves, Tina A -- Gu, Yong -- Heath, Paul -- Heger, Andreas -- Karakoc, Emre -- Kolb-Kokocinski, Anja -- Laird, Gavin K -- Lunter, Gerton -- Meader, Stephen -- Mort, Matthew -- Mullikin, James C -- Munch, Kasper -- O'Connor, Timothy D -- Phillips, Andrew D -- Prado-Martinez, Javier -- Rogers, Anthony S -- Sajjadian, Saba -- Schmidt, Dominic -- Shaw, Katy -- Simpson, Jared T -- Stenson, Peter D -- Turner, Daniel J -- Vigilant, Linda -- Vilella, Albert J -- Whitener, Weldon -- Zhu, Baoli -- Cooper, David N -- de Jong, Pieter -- Dermitzakis, Emmanouil T -- Eichler, Evan E -- Flicek, Paul -- Goldman, Nick -- Mundy, Nicholas I -- Ning, Zemin -- Odom, Duncan T -- Ponting, Chris P -- Quail, Michael A -- Ryder, Oliver A -- Searle, Stephen M -- Warren, Wesley C -- Wilson, Richard K -- Schierup, Mikkel H -- Rogers, Jane -- Tyler-Smith, Chris -- Durbin, Richard -- 062023/Wellcome Trust/United Kingdom -- 075491/Z/04/Wellcome Trust/United Kingdom -- 077009/Wellcome Trust/United Kingdom -- 077192/Wellcome Trust/United Kingdom -- 077198/Wellcome Trust/United Kingdom -- 089066/Wellcome Trust/United Kingdom -- 090532/Wellcome Trust/United Kingdom -- 095908/Wellcome Trust/United Kingdom -- 15603/Cancer Research UK/United Kingdom -- 202218/European Research Council/International -- A15603/Cancer Research UK/United Kingdom -- G0501331/Medical Research Council/United Kingdom -- G0701805/Medical Research Council/United Kingdom -- HG002385/HG/NHGRI NIH HHS/ -- U54 HG003079/HG/NHGRI NIH HHS/ -- WT062023/Wellcome Trust/United Kingdom -- WT077009/Wellcome Trust/United Kingdom -- WT077192/Wellcome Trust/United Kingdom -- WT077198/Wellcome Trust/United Kingdom -- WT089066/Wellcome Trust/United Kingdom -- Medical Research Council/United Kingdom -- Biotechnology and Biological Sciences Research Council/United Kingdom -- Howard Hughes Medical Institute/ -- Intramural NIH HHS/ -- England -- Nature. 2012 Mar 7;483(7388):169-75. doi: 10.1038/nature10842.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton CB10 1SA, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22398555" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Evolution, Molecular ; Female ; Gene Expression Regulation ; *Genetic Speciation ; Genetic Variation/genetics ; Genome/*genetics ; Genomics ; Gorilla gorilla/*genetics ; Humans ; Macaca mulatta/genetics ; Molecular Sequence Data ; Pan troglodytes/genetics ; Phylogeny ; Pongo/genetics ; Proteins/genetics ; Sequence Alignment ; Species Specificity ; Transcription, Genetic
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 6
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    Progressive degeneration of human neural stem cells caused by pathogenic LRRK2 (2012)
    Nature Publishing Group (NPG)
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    Publication Date: 2012-10-19
    Description: Nuclear-architecture defects have been shown to correlate with the manifestation of a number of human diseases as well as ageing. It is therefore plausible that diseases whose manifestations correlate with ageing might be connected to the appearance of nuclear aberrations over time. We decided to evaluate nuclear organization in the context of ageing-associated disorders by focusing on a leucine-rich repeat kinase 2 (LRRK2) dominant mutation (G2019S; glycine-to-serine substitution at amino acid 2019), which is associated with familial and sporadic Parkinson's disease as well as impairment of adult neurogenesis in mice. Here we report on the generation of induced pluripotent stem cells (iPSCs) derived from Parkinson's disease patients and the implications of LRRK2(G2019S) mutation in human neural-stem-cell (NSC) populations. Mutant NSCs showed increased susceptibility to proteasomal stress as well as passage-dependent deficiencies in nuclear-envelope organization, clonal expansion and neuronal differentiation. Disease phenotypes were rescued by targeted correction of the LRRK2(G2019S) mutation with its wild-type counterpart in Parkinson's disease iPSCs and were recapitulated after targeted knock-in of the LRRK2(G2019S) mutation in human embryonic stem cells. Analysis of human brain tissue showed nuclear-envelope impairment in clinically diagnosed Parkinson's disease patients. Together, our results identify the nucleus as a previously unknown cellular organelle in Parkinson's disease pathology and may help to open new avenues for Parkinson's disease diagnoses as well as for the potential development of therapeutics targeting this fundamental cell structure.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3504651/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3504651/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Liu, Guang-Hui -- Qu, Jing -- Suzuki, Keiichiro -- Nivet, Emmanuel -- Li, Mo -- Montserrat, Nuria -- Yi, Fei -- Xu, Xiuling -- Ruiz, Sergio -- Zhang, Weiqi -- Wagner, Ulrich -- Kim, Audrey -- Ren, Bing -- Li, Ying -- Goebl, April -- Kim, Jessica -- Soligalla, Rupa Devi -- Dubova, Ilir -- Thompson, James -- Yates, John 3rd -- Esteban, Concepcion Rodriguez -- Sancho-Martinez, Ignacio -- Izpisua Belmonte, Juan Carlos -- ES017166/ES/NIEHS NIH HHS/ -- GTB07001/Telethon/Italy -- P41 RR011823/RR/NCRR NIH HHS/ -- U01 ES017166/ES/NIEHS NIH HHS/ -- England -- Nature. 2012 Nov 22;491(7425):603-7. doi: 10.1038/nature11557. Epub 2012 Oct 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China. ghliu@ibp.ac.cn〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23075850" target="_blank"〉PubMed〈/a〉
    Keywords: Apoptosis ; Cell Differentiation ; Cell Division ; Cell Line ; Clone Cells/metabolism/pathology ; Embryonic Stem Cells/metabolism/pathology ; Gene Knock-In Techniques ; Humans ; Induced Pluripotent Stem Cells/metabolism/pathology ; Mutant Proteins/genetics/*metabolism ; Mutation ; Neural Stem Cells/metabolism/*pathology ; Nuclear Envelope/genetics/pathology ; Parkinson Disease/*pathology ; Proteasome Endopeptidase Complex/metabolism ; Protein-Serine-Threonine Kinases/*genetics/*metabolism ; Stress, Physiological
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 7
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    Möbius transformations and electronic transport properties of large disorderless networks (2012)
    American Physical Society (APS)
    Details
    Publication Date: 2012-05-18
    Description: Author(s): Yu Jiang, M. Martínez-Mares, E. Castaño, and A. Robledo We show that the key transport states, insulating and conducting, of large regular networks of scatterers can be described generically by negative and zero Lyapunov exponents, respectively, of Möbius maps that relate the scattering matrix of systems with successive sizes. The conductive phase is rep... [Phys. Rev. E 85, 057202] Published Thu May 17, 2012
    Keywords: Chaos and pattern formation
    Print ISSN: 1539-3755
    Electronic ISSN: 1550-2376
    Topics: Physics
    Published by American Physical Society (APS)
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