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  • 11
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    Diet drives convergence in gut microbiome functions across mammalian phylogeny and within humans (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-05-21
    Description: Coevolution of mammals and their gut microbiota has profoundly affected their radiation into myriad habitats. We used shotgun sequencing of microbial community DNA and targeted sequencing of bacterial 16S ribosomal RNA genes to gain an understanding of how microbial communities adapt to extremes of diet. We sampled fecal DNA from 33 mammalian species and 18 humans who kept detailed diet records, and we found that the adaptation of the microbiota to diet is similar across different mammalian lineages. Functional repertoires of microbiome genes, such as those encoding carbohydrate-active enzymes and proteases, can be predicted from bacterial species assemblages. These results illustrate the value of characterizing vertebrate gut microbiomes to understand host evolutionary histories at a supraorganismal level.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3303602/" 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/PMC3303602/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Muegge, Brian D -- Kuczynski, Justin -- Knights, Dan -- Clemente, Jose C -- Gonzalez, Antonio -- Fontana, Luigi -- Henrissat, Bernard -- Knight, Rob -- Gordon, Jeffrey I -- DK078669/DK/NIDDK NIH HHS/ -- DK30292/DK/NIDDK NIH HHS/ -- DK70977/DK/NIDDK NIH HHS/ -- P01 DK078669/DK/NIDDK NIH HHS/ -- P01 DK078669-05/DK/NIDDK NIH HHS/ -- P30 DK056341/DK/NIDDK NIH HHS/ -- P30 DK056341-11/DK/NIDDK NIH HHS/ -- R01 DK070977/DK/NIDDK NIH HHS/ -- R01 DK070977-08/DK/NIDDK NIH HHS/ -- R37 DK030292/DK/NIDDK NIH HHS/ -- R37 DK030292-31/DK/NIDDK NIH HHS/ -- T32-A1007172/PHS HHS/ -- UL1 RR024992/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2011 May 20;332(6032):970-4. doi: 10.1126/science.1198719.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Genome Sciences and Systems Biology, Washington University School of Medicine, St. Louis, MO 63108, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21596990" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptation, Physiological ; Amino Acids/biosynthesis ; Animals ; Bacteria/classification/genetics/metabolism ; Biological Evolution ; Biostatistics ; Caloric Restriction ; *Diet ; Enzymes/genetics/metabolism ; Feces/*microbiology ; Gastrointestinal Tract/*microbiology/physiology ; Genes, Bacterial ; Genes, rRNA ; Humans ; Least-Squares Analysis ; Mammals/*microbiology/physiology ; Metagenome/*physiology ; Monte Carlo Method ; *Phylogeny ; Proteins/metabolism ; RNA, Ribosomal, 16S/genetics ; Sequence Analysis, DNA
    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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  • 12
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    Perceived predation risk reduces the number of offspring songbirds produce per year (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-12-14
    Description: Predator effects on prey demography have traditionally been ascribed solely to direct killing in studies of population ecology and wildlife management. Predators also affect the prey's perception of predation risk, but this has not been thought to meaningfully affect prey demography. We isolated the effects of perceived predation risk in a free-living population of song sparrows by actively eliminating direct predation and used playbacks of predator calls and sounds to manipulate perceived risk. We found that the perception of predation risk alone reduced the number of offspring produced per year by 40%. Our results suggest that the perception of predation risk is itself powerful enough to affect wildlife population dynamics, and should thus be given greater consideration in vertebrate conservation and management.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zanette, Liana Y -- White, Aija F -- Allen, Marek C -- Clinchy, Michael -- New York, N.Y. -- Science. 2011 Dec 9;334(6061):1398-401. doi: 10.1126/science.1210908.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University of Western Ontario, London, Ontario N6A 5B7, Canada. lzanette@uwo.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22158817" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Fear ; Female ; Male ; Nesting Behavior ; Oviposition ; Perception ; Population Dynamics ; Population Growth ; *Predatory Behavior ; *Reproduction ; Risk ; Seasons ; Sparrows/*physiology ; Vocalization, Animal
    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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  • 13
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    Hydropower. The legacy of the Three Gorges Dam (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-08-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stone, Richard -- New York, N.Y. -- Science. 2011 Aug 12;333(6044):817. doi: 10.1126/science.333.6044.817.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21835994" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; China/epidemiology ; *Ecosystem ; *Energy-Generating Resources ; *Environment ; Humans ; *Rivers ; Schistosomiasis/epidemiology/transmission ; Snails ; Water Movements
    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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  • 14
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    Interaction between Notch and Hif-alpha in development and survival of Drosophila blood cells (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-06-04
    Description: A blood cell type termed crystal cell in Drosophila functions in clotting and wound healing and requires Notch for specification and maintenance. We report that crystal cells express elevated levels of Sima protein orthologous to mammalian hypoxia-inducible factor-alpha (Hif-alpha) even under conditions of normal oxygen availability. In these platelet-like crystal cells, Sima activates full-length Notch receptor signaling via a noncanonical, ligand-independent mechanism that promotes hemocyte survival during both normal hematopoietic development and hypoxic stress. This interaction initiates in early endosomes, is independent of Hif-beta (Tauangomicron in Drosophila), and does not activate hypoxia response targets. Studies in vertebrate myeloid cells have shown a similar up-regulation of Hif-alpha protein in well-oxygenated environments. This study provides a mechanistic paradigm for Hif-alpha/Notch interaction that may be conserved in mammals.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4412745/" 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/PMC4412745/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mukherjee, Tina -- Kim, William Sang -- Mandal, Lolitika -- Banerjee, Utpal -- R01 HL067395/HL/NHLBI NIH HHS/ -- R01HL067395/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2011 Jun 3;332(6034):1210-3. doi: 10.1126/science.1199643.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, CA 90095, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21636775" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aryl Hydrocarbon Receptor Nuclear Translocator/chemistry/genetics/metabolism ; Calcium-Binding Proteins/metabolism ; Cell Hypoxia ; Cell Survival ; Cytoplasmic Vesicles/metabolism ; DNA-Binding Proteins/chemistry/genetics/*metabolism ; Drosophila/*cytology/genetics/metabolism ; Drosophila Proteins/chemistry/genetics/*metabolism ; Endocytosis ; Hematopoiesis ; Hemocytes/*cytology/*physiology ; Hypoxia-Inducible Factor 1, alpha Subunit/metabolism ; Intercellular Signaling Peptides and Proteins/metabolism ; Ligands ; Membrane Proteins/metabolism ; Receptors, Notch/*metabolism ; Signal Transduction ; Stress, Physiological
    Print ISSN: 0036-8075
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  • 15
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    Animal rights. A road map for animal rights (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-04-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miller, Greg -- New York, N.Y. -- Science. 2011 Apr 1;332(6025):30-1. doi: 10.1126/science.332.6025.30.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21454768" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Rights/*legislation & jurisprudence ; Animals ; Dolphins ; Intelligence ; Pan troglodytes
    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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  • 16
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    The cell biology of synaptic plasticity (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-11-05
    Description: Synaptic plasticity is the experience-dependent change in connectivity between neurons that is believed to underlie learning and memory. Here, we discuss the cellular and molecular processes that are altered when a neuron responds to external stimuli, and how these alterations lead to an increase or decrease in synaptic connectivity. Modification of synaptic components and changes in gene expression are necessary for many forms of plasticity. We focus on excitatory neurons in the mammalian hippocampus, one of the best-studied model systems of learning-related plasticity.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3286636/" 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/PMC3286636/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ho, Victoria M -- Lee, Ji-Ann -- Martin, Kelsey C -- R01 MH077022/MH/NIMH NIH HHS/ -- R01 MH077022-05/MH/NIMH NIH HHS/ -- R01 NS045324/NS/NINDS NIH HHS/ -- R01 NS045324-11/NS/NINDS NIH HHS/ -- R21 MH069645/MH/NIMH NIH HHS/ -- R21 MH069645-02/MH/NIMH NIH HHS/ -- T32 GM008042/GM/NIGMS NIH HHS/ -- T32 MH073526/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2011 Nov 4;334(6056):623-8. doi: 10.1126/science.1209236.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Interdepartmental Program in Neurosciences, University of California-Los Angeles (UCLA), BSRB 390B, 615 Charles E. Young Drive South, Los Angeles, CA 90095-1737, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22053042" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Gene Expression Regulation ; Hippocampus/cytology/*physiology ; Humans ; Learning/physiology ; Memory/physiology ; Neuroglia/physiology ; Neuronal Plasticity/genetics/*physiology ; Neurons/cytology/*physiology ; Synapses/physiology ; Synaptic Transmission
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 17
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    Sleep and synaptic homeostasis: structural evidence in Drosophila (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-06-28
    Description: The functions of sleep remain elusive, but a strong link exists between sleep need and neuronal plasticity. We tested the hypothesis that plastic processes during wake lead to a net increase in synaptic strength and sleep is necessary for synaptic renormalization. We found that, in three Drosophila neuronal circuits, synapse size or number increases after a few hours of wake and decreases only if flies are allowed to sleep. A richer wake experience resulted in both larger synaptic growth and greater sleep need. Finally, we demonstrate that the gene Fmr1 (fragile X mental retardation 1) plays an important role in sleep-dependent synaptic renormalization.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3128387/" 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/PMC3128387/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bushey, Daniel -- Tononi, Giulio -- Cirelli, Chiara -- DP1 OD000579/OD/NIH HHS/ -- DP1 OD000579-05/OD/NIH HHS/ -- R01 GM075315/GM/NIGMS NIH HHS/ -- R01 GM075315-01A2/GM/NIGMS NIH HHS/ -- R01 GM075315-02/GM/NIGMS NIH HHS/ -- R01 GM075315-03/GM/NIGMS NIH HHS/ -- R01 GM075315-04/GM/NIGMS NIH HHS/ -- R01 GM075315-05/GM/NIGMS NIH HHS/ -- R01 GM075315-05S1/GM/NIGMS NIH HHS/ -- Canadian Institutes of Health Research/Canada -- New York, N.Y. -- Science. 2011 Jun 24;332(6037):1576-81. doi: 10.1126/science.1202839.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychiatry, University of Wisconsin, Madison, WI 53719, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21700878" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dendrites/physiology/ultrastructure ; Drosophila Proteins/*genetics/metabolism/physiology ; Drosophila melanogaster/genetics/*physiology ; Female ; Fragile X Mental Retardation Protein/*genetics/physiology ; *Homeostasis ; Male ; Mushroom Bodies/cytology/physiology ; *Neuronal Plasticity ; Neurons/physiology ; Neuropeptides/genetics/metabolism ; Sleep/*physiology ; Sleep Deprivation ; Synapses/*physiology/ultrastructure ; Time Factors
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
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  • 18
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    Animal rights. The rise of animal law (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-04-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miller, Greg -- New York, N.Y. -- Science. 2011 Apr 1;332(6025):28-31. doi: 10.1126/science.332.6025.28.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21454767" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Rights/*legislation & jurisprudence ; Animals ; Pets
    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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  • 19
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    Medicine. Chemically tuned myosin motors (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-03-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Leinwand, Leslie A -- Moss, Richard L -- New York, N.Y. -- Science. 2011 Mar 18;331(6023):1392-3. doi: 10.1126/science.1204207.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular, Cellular, and Developmental Biology, University of Colorado, Boulder, CO 80309, USA. leinwand@colorado.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21415340" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/metabolism ; Adenosine Diphosphate/metabolism ; Adenosine Triphosphatases/metabolism ; Adenosine Triphosphate/metabolism ; Animals ; Cardiac Myosins/chemistry/*metabolism ; Heart Failure, Systolic/drug therapy ; Humans ; Myocardial Contraction/*drug effects ; Phosphates/metabolism ; Protein Binding ; Protein Isoforms/chemistry/metabolism ; Urea/*analogs & derivatives/pharmacology
    Print ISSN: 0036-8075
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  • 20
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    Predicting a human gut microbiota's response to diet in gnotobiotic mice (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-05-21
    Description: The interrelationships between our diets and the structure and operations of our gut microbial communities are poorly understood. A model community of 10 sequenced human gut bacteria was introduced into gnotobiotic mice, and changes in species abundance and microbial gene expression were measured in response to randomized perturbations of four defined ingredients in the host diet. From the responses, we developed a statistical model that predicted over 60% of the variation in species abundance evoked by diet perturbations, and we were able to identify which factors in the diet best explained changes seen for each community member. The approach is generally applicable, as shown by a follow-up study involving diets containing various mixtures of pureed human baby foods.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3303606/" 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/PMC3303606/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Faith, Jeremiah J -- McNulty, Nathan P -- Rey, Federico E -- Gordon, Jeffrey I -- DK30292/DK/NIDDK NIH HHS/ -- DK70977/DK/NIDDK NIH HHS/ -- R01 DK070977/DK/NIDDK NIH HHS/ -- R01 DK070977-08/DK/NIDDK NIH HHS/ -- R37 DK030292/DK/NIDDK NIH HHS/ -- R37 DK030292-31/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2011 Jul 1;333(6038):101-4. doi: 10.1126/science.1206025. Epub 2011 May 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Genome Sciences and Systems Biology, Washington University School of Medicine, St. Louis, MO 63108, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21596954" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacteroides/genetics/physiology ; Biomass ; Caseins/administration & dosage ; Desulfovibrio/genetics/physiology ; *Diet ; Dietary Carbohydrates/administration & dosage ; Dietary Fats, Unsaturated/administration & dosage ; Dietary Proteins/administration & dosage ; Dietary Sucrose/administration & dosage ; Escherichia coli/genetics/physiology ; Feces/*microbiology ; Gastrointestinal Tract/*microbiology ; Gene Expression Profiling ; Gene Expression Regulation, Bacterial ; *Germ-Free Life ; Gram-Negative Bacteria/*physiology ; Gram-Positive Bacteria/genetics/*physiology ; Humans ; Infant ; Infant Food ; Linear Models ; Male ; *Metagenome ; Mice ; Mice, Inbred C57BL ; Models, Animal
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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