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  • 1
    Publication Date: 2016-01-21
    Description: This paper presents Yellow Fluorescence-Activating and absorption-Shifting Tag (Y-FAST), a small monomeric protein tag, half as large as the green fluorescent protein, enabling fluorescent labeling of proteins in a reversible and specific manner through the reversible binding and activation of a cell-permeant and nontoxic fluorogenic ligand (a so-called fluorogen). A...
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
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  • 2
    Publication Date: 2001-10-27
    Description: Listeria monocytogenes is a food-borne pathogen with a high mortality rate that has also emerged as a paradigm for intracellular parasitism. We present and compare the genome sequences of L. monocytogenes (2,944,528 base pairs) and a nonpathogenic species, L. innocua (3,011,209 base pairs). We found a large number of predicted genes encoding surface and secreted proteins, transporters, and transcriptional regulators, consistent with the ability of both species to adapt to diverse environments. The presence of 270 L. monocytogenes and 149 L. innocua strain-specific genes (clustered in 100 and 63 islets, respectively) suggests that virulence in Listeria results from multiple gene acquisition and deletion events.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Glaser, P -- Frangeul, L -- Buchrieser, C -- Rusniok, C -- Amend, A -- Baquero, F -- Berche, P -- Bloecker, H -- Brandt, P -- Chakraborty, T -- Charbit, A -- Chetouani, F -- Couve, E -- de Daruvar, A -- Dehoux, P -- Domann, E -- Dominguez-Bernal, G -- Duchaud, E -- Durant, L -- Dussurget, O -- Entian, K D -- Fsihi, H -- Garcia-del Portillo, F -- Garrido, P -- Gautier, L -- Goebel, W -- Gomez-Lopez, N -- Hain, T -- Hauf, J -- Jackson, D -- Jones, L M -- Kaerst, U -- Kreft, J -- Kuhn, M -- Kunst, F -- Kurapkat, G -- Madueno, E -- Maitournam, A -- Vicente, J M -- Ng, E -- Nedjari, H -- Nordsiek, G -- Novella, S -- de Pablos, B -- Perez-Diaz, J C -- Purcell, R -- Remmel, B -- Rose, M -- Schlueter, T -- Simoes, N -- Tierrez, A -- Vazquez-Boland, J A -- Voss, H -- Wehland, J -- Cossart, P -- New York, N.Y. -- Science. 2001 Oct 26;294(5543):849-52.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Genomique des Microorganismes Pathogenes, Unite des Interactions Bacteries-Cellules, Service d'Informatique Scientifique, Institut Pasteur, 25-28 rue du Dr. Roux, 75724 Paris, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11679669" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological ; Amino Acid Motifs ; Bacillus subtilis/genetics ; Bacterial Proteins/chemistry/*genetics/physiology ; Base Composition ; Carrier Proteins/chemistry/genetics ; Chromosomes, Bacterial/genetics ; DNA, Bacterial/chemistry/genetics ; Gene Transfer, Horizontal ; Genes, Bacterial ; *Genome, Bacterial ; Genomics ; Listeria/chemistry/*genetics/physiology ; Listeria monocytogenes/chemistry/*genetics/pathogenicity/physiology ; Membrane Proteins/chemistry/genetics ; Sequence Analysis, DNA ; Staphylococcus aureus/genetics ; Transcription Factors/chemistry/genetics ; Virulence/genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 2019
    Description: 〈p〉Solid-state phosphor-converted white light-emitting diodes (pc-WLEDs) are currently revolutionizing the lighting industry. To advance the technology, phosphors with high efficiency, tunable photoluminescence, and high thermal stability are required. Here, we demonstrate that a simple lithium incorporation in NaAlSiO〈sub〉4〈/sub〉:Eu system enables the simultaneous fulfillment of the three criteria. The Li substitution at Al sites beside Na sites in NaAlSiO〈sub〉4〈/sub〉:Eu leads to an enhanced emission intensity/efficiency owing to an effective Eu〈sup〉3+〈/sup〉 to Eu〈sup〉2+〈/sup〉 reduction, an emission color tuning from yellow to green by tuning the occupation of different Eu sites, and an improvement of luminescence thermal stability as a result of the interplay with Li-related defects. A pc-WLED using the Li-codoped NaAlSiO〈sub〉4〈/sub〉:Eu as a green component exhibits improved performance. The phosphors with multiple activator sites can facilitate the positive synergistic effect on luminescence properties.〈/p〉
    Electronic ISSN: 2375-2548
    Topics: Natural Sciences in General
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  • 4
    Publication Date: 2011-04-22
    Description: Our knowledge of species and functional composition of the human gut microbiome is rapidly increasing, but it is still based on very few cohorts and little is known about variation across the world. By combining 22 newly sequenced faecal metagenomes of individuals from four countries with previously published data sets, here we identify three robust clusters (referred to as enterotypes hereafter) that are not nation or continent specific. We also confirmed the enterotypes in two published, larger cohorts, indicating that intestinal microbiota variation is generally stratified, not continuous. This indicates further the existence of a limited number of well-balanced host-microbial symbiotic states that might respond differently to diet and drug intake. The enterotypes are mostly driven by species composition, but abundant molecular functions are not necessarily provided by abundant species, highlighting the importance of a functional analysis to understand microbial communities. Although individual host properties such as body mass index, age, or gender cannot explain the observed enterotypes, data-driven marker genes or functional modules can be identified for each of these host properties. For example, twelve genes significantly correlate with age and three functional modules with the body mass index, hinting at a diagnostic potential of microbial markers.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3728647/" 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/PMC3728647/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arumugam, Manimozhiyan -- Raes, Jeroen -- Pelletier, Eric -- Le Paslier, Denis -- Yamada, Takuji -- Mende, Daniel R -- Fernandes, Gabriel R -- Tap, Julien -- Bruls, Thomas -- Batto, Jean-Michel -- Bertalan, Marcelo -- Borruel, Natalia -- Casellas, Francesc -- Fernandez, Leyden -- Gautier, Laurent -- Hansen, Torben -- Hattori, Masahira -- Hayashi, Tetsuya -- Kleerebezem, Michiel -- Kurokawa, Ken -- Leclerc, Marion -- Levenez, Florence -- Manichanh, Chaysavanh -- Nielsen, H Bjorn -- Nielsen, Trine -- Pons, Nicolas -- Poulain, Julie -- Qin, Junjie -- Sicheritz-Ponten, Thomas -- Tims, Sebastian -- Torrents, David -- Ugarte, Edgardo -- Zoetendal, Erwin G -- Wang, Jun -- Guarner, Francisco -- Pedersen, Oluf -- de Vos, Willem M -- Brunak, Soren -- Dore, Joel -- MetaHIT Consortium -- Antolin, Maria -- Artiguenave, Francois -- Blottiere, Herve M -- Almeida, Mathieu -- Brechot, Christian -- Cara, Carlos -- Chervaux, Christian -- Cultrone, Antonella -- Delorme, Christine -- Denariaz, Gerard -- Dervyn, Rozenn -- Foerstner, Konrad U -- Friss, Carsten -- van de Guchte, Maarten -- Guedon, Eric -- Haimet, Florence -- Huber, Wolfgang -- van Hylckama-Vlieg, Johan -- Jamet, Alexandre -- Juste, Catherine -- Kaci, Ghalia -- Knol, Jan -- Lakhdari, Omar -- Layec, Severine -- Le Roux, Karine -- Maguin, Emmanuelle -- Merieux, Alexandre -- Melo Minardi, Raquel -- M'rini, Christine -- Muller, Jean -- Oozeer, Raish -- Parkhill, Julian -- Renault, Pierre -- Rescigno, Maria -- Sanchez, Nicolas -- Sunagawa, Shinichi -- Torrejon, Antonio -- Turner, Keith -- Vandemeulebrouck, Gaetana -- Varela, Encarna -- Winogradsky, Yohanan -- Zeller, Georg -- Weissenbach, Jean -- Ehrlich, S Dusko -- Bork, Peer -- 076964/Wellcome Trust/United Kingdom -- 082372/Wellcome Trust/United Kingdom -- England -- Nature. 2011 May 12;473(7346):174-80. doi: 10.1038/nature09944. Epub 2011 Apr 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉European Molecular Biology Laboratory, Meyerhofstrasse 1, 69117 Heidelberg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21508958" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteria/*classification/genetics ; Bacterial Typing Techniques ; Biodiversity ; Biomarkers/analysis ; Europe ; Feces/microbiology ; Female ; Humans ; Intestines/*microbiology ; Male ; *Metagenome ; Metagenomics ; Phylogeny
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 2009-05-30
    Description: Among the greatest uncertainties in future energy supply and a subject of considerable environmental concern is the amount of oil and gas yet to be found in the Arctic. By using a probabilistic geology-based methodology, the United States Geological Survey has assessed the area north of the Arctic Circle and concluded that about 30% of the world's undiscovered gas and 13% of the world's undiscovered oil may be found there, mostly offshore under less than 500 meters of water. Undiscovered natural gas is three times more abundant than oil in the Arctic and is largely concentrated in Russia. Oil resources, although important to the interests of Arctic countries, are probably not sufficient to substantially shift the current geographic pattern of world oil production.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gautier, Donald L -- Bird, Kenneth J -- Charpentier, Ronald R -- Grantz, Arthur -- Houseknecht, David W -- Klett, Timothy R -- Moore, Thomas E -- Pitman, Janet K -- Schenk, Christopher J -- Schuenemeyer, John H -- Sorensen, Kai -- Tennyson, Marilyn E -- Valin, Zenon C -- Wandrey, Craig J -- New York, N.Y. -- Science. 2009 May 29;324(5931):1175-9. doi: 10.1126/science.1169467.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉U.S. Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025, USA. gautier@usgs.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19478178" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
    Publication Date: 2010-05-22
    Description: Elevated leukocyte cell numbers (leukocytosis), and monocytes in particular, promote atherosclerosis; however, how they become increased is poorly understood. Mice deficient in the adenosine triphosphate-binding cassette (ABC) transporters ABCA1 and ABCG1, which promote cholesterol efflux from macrophages and suppress atherosclerosis in hypercholesterolemic mice, displayed leukocytosis, a transplantable myeloproliferative disorder, and a dramatic expansion of the stem and progenitor cell population containing Lin(-)Sca-1(+)Kit+ (LSK) in the bone marrow. Transplantation of Abca1(-/-) Abcg1(-/-) bone marrow into apolipoprotein A-1 transgenic mice with elevated levels of high-density lipoprotein (HDL) suppressed the LSK population, reduced leukocytosis, reversed the myeloproliferative disorder, and accelerated atherosclerosis. The findings indicate that ABCA1, ABCG1, and HDL inhibit the proliferation of hematopoietic stem and multipotential progenitor cells and connect expansion of these populations with leukocytosis and accelerated atherosclerosis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3032591/" 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/PMC3032591/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yvan-Charvet, Laurent -- Pagler, Tamara -- Gautier, Emmanuel L -- Avagyan, Serine -- Siry, Read L -- Han, Seongah -- Welch, Carrie L -- Wang, Nan -- Randolph, Gwendalyn J -- Snoeck, Hans W -- Tall, Alan R -- HL54591/HL/NHLBI NIH HHS/ -- R01 AG029626/AG/NIA NIH HHS/ -- R01 AI049653/AI/NIAID NIH HHS/ -- R01 AI049653-09/AI/NIAID NIH HHS/ -- R01 AI049653-10/AI/NIAID NIH HHS/ -- R01 AI061741/AI/NIAID NIH HHS/ -- R01 AI061741-03/AI/NIAID NIH HHS/ -- R01 AI061741-04/AI/NIAID NIH HHS/ -- R01A1061741/PHS HHS/ -- R01AG016327/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 2010 Jun 25;328(5986):1689-93. doi: 10.1126/science.1189731. Epub 2010 May 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Molecular Medicine, Department of Medicine, Columbia University, New York, NY 10032, USA. ly2159@columbia.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20488992" target="_blank"〉PubMed〈/a〉
    Keywords: ATP Binding Cassette Transporter 1 ; ATP-Binding Cassette Transporters/genetics/*metabolism ; Animals ; Apolipoprotein A-I/genetics/metabolism ; Atherosclerosis/metabolism/*physiopathology/therapy ; Bone Marrow Transplantation ; Cell Proliferation ; Cells, Cultured ; Cholesterol/*metabolism ; Hematopoietic Stem Cells/*physiology ; Hypercholesterolemia/metabolism ; Leukocytosis/metabolism/*physiopathology/therapy ; Lipoproteins/genetics/*metabolism ; Lipoproteins, HDL/*metabolism ; Macrophages/metabolism ; Mice ; Mice, Inbred C57BL ; Mice, Inbred DBA ; Mice, Transgenic ; Multipotent Stem Cells/physiology ; Myeloid Progenitor Cells/*physiology ; Myeloproliferative Disorders/metabolism/physiopathology/therapy ; Phenotype ; Receptors, Granulocyte-Macrophage Colony-Stimulating Factor/metabolism ; Receptors, Interleukin-3/metabolism ; Signal Transduction
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
    Publication Date: 2015-11-06
    Description: Cohen Syndrome (CS) is a rare autosomal recessive disorder, with defective glycosylation secondary to mutations in the VPS13B gene, which encodes a protein of the Golgi apparatus. Besides congenital neutropenia, retinopathy and intellectual deficiency, CS patients are faced with truncal obesity. Metabolism investigations showed abnormal glucose tolerance tests and low HDL values in some patients, and these could be risk factors for the development of diabetes mellitus and/or cardiovascular complications. To understand the mechanisms involved in CS fat storage, we used two models of adipogenesis differentiation: (i) SGBS pre-adipocytes with VPS13B invalidation thanks to siRNA delivery and (ii) CS primary fibroblasts. In both models, VPS13B invalidation led to accelerated differentiation into fat cells, which was confirmed by the earlier and increased expression of specific adipogenic genes, consequent to the increased response of cells to insulin stimulation. At the end of the differentiation protocol, these fat cells exhibited decreased AKT2 phosphorylation after insulin stimulation, which suggests insulin resistance. This study, in association with the in-depth analysis of the metabolic status of the patients, thus allowed us to recommend appropriate nutritional education to prevent the occurrence of diabetes mellitus and to put forward recommendations for the follow-up of CS patients, in particular with regard to the development of metabolic syndrome. We also suggest replacing the term obesity by abnormal fat distribution in CS, which should reduce the number of inappropriate diagnoses in patients who are referred only on the basis of intellectual deficiency associated with obesity.
    Print ISSN: 0964-6906
    Electronic ISSN: 1460-2083
    Topics: Biology , Medicine
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  • 8
    Publication Date: 1985-01-01
    Print ISSN: 0149-1423
    Electronic ISSN: 1943-2674
    Topics: Geosciences
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  • 9
    Publication Date: 1983-01-01
    Print ISSN: 0149-1423
    Electronic ISSN: 1943-2674
    Topics: Geosciences
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  • 10
    Publication Date: 1983-01-01
    Print ISSN: 0149-1423
    Electronic ISSN: 1943-2674
    Topics: Geosciences
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