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  • 1
    Publication Date: 2015-01-29
    Description: There is growing interest in using messaging to drive prosocial behaviors, which contribute to investment in public goods. We worked with a leading nongovernmental organization in Peru to randomize nine different prorecycling messages that were crafted on the basis of best practices, prior evidence, and theories of behavioral change. Different variants emphasized information on environmental or social benefits, social comparisons, social sanctions, authority, and reminders. None of the messages had significant effects on recycling behavior. However, reducing the cost of ongoing participation by providing a recycling bin significantly increased recycling among enrolled households.
    Keywords: C93 - Field Experiments, D03 - Behavioral Economics ; Underlying Principles, N56 - Latin America ; Caribbean, Q53 - Air Pollution ; Water Pollution ; Noise ; Hazardous Waste ; Solid Waste ; Recycling
    Print ISSN: 0258-6770
    Electronic ISSN: 1564-698X
    Topics: Economics
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  • 2
    Publication Date: 2011-06-02
    Description: American Economic Review 101 (3): 739-740
    Print ISSN: 0002-8282
    Electronic ISSN: 1944-7981
    Topics: Economics
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  • 3
    Publication Date: 2013-01-19
    Description: In recent years, ancient DNA has increasingly been used for estimating molecular timescales, particularly in studies of substitution rates and demographic histories. Molecular clocks can be calibrated using temporal information from ancient DNA sequences. This information comes from the ages of the ancient samples, which can be estimated by radiocarbon dating the source material or by dating the layers in which the material was deposited. Both methods involve sources of uncertainty. The performance of Bayesian phylogenetic inference depends on the information content of the data set, which includes variation in the DNA sequences and the structure of the sample ages. Various sources of estimation error can reduce our ability to estimate rates and timescales accurately and precisely. We investigated the impact of sample-dating uncertainties on the estimation of evolutionary timescale parameters using the software BEAST. Our analyses involved 11 published data sets and focused on estimates of substitution rate and root age. We show that, provided that samples have been accurately dated and have a broad temporal span, it might be unnecessary to account for sample-dating uncertainty in Bayesian phylogenetic analyses of ancient DNA. We also investigated the sample size and temporal span of the ancient DNA sequences needed to estimate phylogenetic timescales reliably. Our results show that the range of sample ages plays a crucial role in determining the quality of the results but that accurate and precise phylogenetic estimates of timescales can be made even with only a few ancient sequences. These findings have important practical consequences for studies of molecular rates, timescales, and population dynamics.
    Print ISSN: 0737-4038
    Electronic ISSN: 1537-1719
    Topics: Biology
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  • 4
    Publication Date: 2012-06-29
    Description: Analytical Chemistry DOI: 10.1021/ac301121z
    Print ISSN: 0003-2700
    Electronic ISSN: 1520-6882
    Topics: Chemistry and Pharmacology
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  • 5
    Publication Date: 2000-08-19
    Description: In determining the mechanism of neutrophil elastase (NE)-mediated killing of Escherichia coli, we found that NE degraded outer membrane protein A (OmpA), localized on the surface of Gram-negative bacteria. NE killed wild-type, but not OmpA-deficient, E. coli. Also, whereas NE-deficient mice had impaired survival in response to E. coli sepsis, as compared to wild-type mice, the presence or absence of NE had no influence on survival in response to sepsis that had been induced with OmpA-deficient E. coli. These findings define a mechanism of nonoxidative bacterial killing by NE and point to OmpA as a bacterial target in host defense.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Belaaouaj, A -- Kim, K S -- Shapiro, S D -- New York, N.Y. -- Science. 2000 Aug 18;289(5482):1185-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63110, USA. belaaouaja@msnotes.wustl.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10947984" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacterial Outer Membrane Proteins/genetics/*metabolism ; *Blood Bactericidal Activity ; Cell Membrane/metabolism/ultrastructure ; Colony Count, Microbial ; Escherichia coli/genetics/growth & development/*metabolism/ultrastructure ; Escherichia coli Infections/immunology/microbiology ; Humans ; Leukocyte Elastase/antagonists & inhibitors/genetics/*metabolism ; Mice ; Microscopy, Electron ; Mutation ; Neutrophils/*enzymology/microbiology ; Phagosomes/enzymology/microbiology ; Proteinase Inhibitory Proteins, Secretory ; Proteins/pharmacology ; Serine Proteinase Inhibitors/pharmacology
    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: 1997-09-26
    Description: To determine which proteinases are responsible for the lung destruction characteristic of pulmonary emphysema, macrophage elastase-deficient (MME-/-) mice were subjected to cigarette smoke. In contrast to wild-type mice, MME-/- mice did not have increased numbers of macrophages in their lungs and did not develop emphysema in response to long-term exposure to cigarette smoke. Smoke-exposed MME-/- mice that received monthly intratracheal instillations of monocyte chemoattractant protein-1 showed accumulation of alveolar macrophages but did not develop air space enlargement. Thus, macrophage elastase is probably sufficient for the development of emphysema that results from chronic inhalation of cigarette smoke.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hautamaki, R D -- Kobayashi, D K -- Senior, R M -- Shapiro, S D -- New York, N.Y. -- Science. 1997 Sep 26;277(5334):2002-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Internal Medicine, Washington University School of Medicine at Barnes-Jewish Hospital, St. Louis, MO 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9302297" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Count ; Chemokine CCL2/pharmacology ; Gene Targeting ; Lung/pathology ; Macrophages, Alveolar/*enzymology/physiology ; Matrix Metalloproteinase 12 ; Metalloendopeptidases/genetics/*metabolism ; Mice ; Mice, Inbred C57BL ; Mice, Inbred Strains ; Neutrophils ; Plants, Toxic ; Pulmonary Alveoli/pathology ; Pulmonary Emphysema/enzymology/*etiology/pathology ; Smoke/adverse effects ; Smoking/*adverse effects ; Tobacco
    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: 2009-06-19
    Description: Macrophages are aptly positioned to function as the primary line of defence against invading pathogens in many organs, including the lung and peritoneum. Their ability to phagocytose and clear microorganisms has been well documented. Macrophages possess several substances with which they can kill bacteria, including reactive oxygen species, nitric oxide, and antimicrobial proteins. We proposed that macrophage-derived proteinases may contribute to the antimicrobial properties of macrophages. Macrophage elastase (also known as matrix metalloproteinase 12 or MMP12) is an enzyme predominantly expressed in mature tissue macrophages and is implicated in several disease processes, including emphysema. Physiological functions for MMP12 have not been described. Here we show that Mmp12(-/-) mice exhibit impaired bacterial clearance and increased mortality when challenged with both gram-negative and gram-positive bacteria at macrophage-rich portals of entry, such as the peritoneum and lung. Intracellular stores of MMP12 are mobilized to macrophage phagolysosomes after the ingestion of bacterial pathogens. Once inside phagolysosomes, MMP12 adheres to bacterial cell walls where it disrupts cellular membranes resulting in bacterial death. The antimicrobial properties of MMP12 do not reside within its catalytic domain, but rather within the carboxy-terminal domain. This domain contains a unique four amino acid sequence on an exposed beta loop of the protein that is required for the observed antimicrobial activity. The present study represents, to our knowledge, the first report of direct antimicrobial activity by a matrix metallopeptidase, and describes a new antimicrobial peptide that is sequentially and structurally unique in nature.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2885871/" 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/PMC2885871/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Houghton, A McGarry -- Hartzell, William O -- Robbins, Clinton S -- Gomis-Ruth, F Xavier -- Shapiro, Steven D -- R01 HL082541/HL/NHLBI NIH HHS/ -- R01 HL082541-01/HL/NHLBI NIH HHS/ -- England -- Nature. 2009 Jul 30;460(7255):637-41. doi: 10.1038/nature08181. Epub 2009 Jun 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15213, USA. houghtonm@dom.pitt.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19536155" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Anti-Bacterial Agents/pharmacology ; Bacterial Infections/*enzymology ; *Bacterial Physiological Phenomena ; Humans ; Kaplan-Meier Estimate ; Klebsiella pneumoniae/drug effects ; Macrophages/*enzymology/*microbiology ; Matrix Metalloproteinase 12/chemistry/genetics/*metabolism/pharmacology ; Mice ; Mice, Knockout ; Models, Molecular ; Molecular Sequence Data ; Protein Structure, Tertiary ; Staphylococcus aureus/drug effects
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 8
    Publication Date: 2009-12-17
    Description: The molecular mechanisms underlying major phenotypic changes that have evolved repeatedly in nature are generally unknown. Pelvic loss in different natural populations of threespine stickleback fish has occurred through regulatory mutations deleting a tissue-specific enhancer of the Pituitary homeobox transcription factor 1 (Pitx1) gene. The high prevalence of deletion mutations at Pitx1 may be influenced by inherent structural features of the locus. Although Pitx1 null mutations are lethal in laboratory animals, Pitx1 regulatory mutations show molecular signatures of positive selection in pelvic-reduced populations. These studies illustrate how major expression and morphological changes can arise from single mutational leaps in natural populations, producing new adaptive alleles via recurrent regulatory alterations in a key developmental control gene.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3109066/" 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/PMC3109066/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chan, Yingguang Frank -- Marks, Melissa E -- Jones, Felicity C -- Villarreal, Guadalupe Jr -- Shapiro, Michael D -- Brady, Shannon D -- Southwick, Audrey M -- Absher, Devin M -- Grimwood, Jane -- Schmutz, Jeremy -- Myers, Richard M -- Petrov, Dmitri -- Jonsson, Bjarni -- Schluter, Dolph -- Bell, Michael A -- Kingsley, David M -- P50 HG002568/HG/NHGRI NIH HHS/ -- P50 HG002568-09/HG/NHGRI NIH HHS/ -- P50 HG02568/HG/NHGRI NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2010 Jan 15;327(5963):302-5. doi: 10.1126/science.1182213. Epub 2009 Dec 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Developmental Biology and Howard Hughes Medical Institute, Stanford University, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20007865" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; *Biological Evolution ; Chromosome Fragile Sites ; Chromosome Mapping ; Crosses, Genetic ; DNA, Intergenic ; *Enhancer Elements, Genetic ; Fish Proteins/*genetics ; Molecular Sequence Data ; Mutation ; Paired Box Transcription Factors/*genetics ; Pelvis/anatomy & histology ; Selection, Genetic ; *Sequence Deletion ; Smegmamorpha/*anatomy & histology/*genetics/growth & development
    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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  • 9
    Publication Date: 2013-02-02
    Description: The geographic origins of breeds and the genetic basis of variation within the widely distributed and phenotypically diverse domestic rock pigeon (Columba livia) remain largely unknown. We generated a rock pigeon reference genome and additional genome sequences representing domestic and feral populations. We found evidence for the origins of major breed groups in the Middle East and contributions from a racing breed to North American feral populations. We identified the gene EphB2 as a strong candidate for the derived head crest phenotype shared by numerous breeds, an important trait in mate selection in many avian species. We also found evidence that this trait evolved just once and spread throughout the species, and that the crest originates early in development by the localized molecular reversal of feather bud polarity.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3778192/" 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/PMC3778192/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shapiro, Michael D -- Kronenberg, Zev -- Li, Cai -- Domyan, Eric T -- Pan, Hailin -- Campbell, Michael -- Tan, Hao -- Huff, Chad D -- Hu, Haofu -- Vickrey, Anna I -- Nielsen, Sandra C A -- Stringham, Sydney A -- Hu, Hao -- Willerslev, Eske -- Gilbert, M Thomas P -- Yandell, Mark -- Zhang, Guojie -- Wang, Jun -- GO RC2HG005619/HG/NHGRI NIH HHS/ -- R01 GM104390/GM/NIGMS NIH HHS/ -- R01 HG004694/HG/NHGRI NIH HHS/ -- R01HG004694/HG/NHGRI NIH HHS/ -- R44 HG006579/HG/NHGRI NIH HHS/ -- RC2 HG005619/HG/NHGRI NIH HHS/ -- T32 GM007464/GM/NIGMS NIH HHS/ -- T32 HD007491/HD/NICHD NIH HHS/ -- T32GM007464/GM/NIGMS NIH HHS/ -- T32HD07491/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 2013 Mar 1;339(6123):1063-7. doi: 10.1126/science.1230422. Epub 2013 Jan 31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University of Utah, Salt Lake City, UT 84112, USA. mike.shapiro@utah.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23371554" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Animals, Domestic/anatomy & histology/classification/genetics ; Animals, Wild/anatomy & histology/classification/genetics ; Breeding ; Columbidae/anatomy & histology/*classification/*genetics ; *Evolution, Molecular ; Feathers/anatomy & histology ; *Genetic Variation ; Genome ; Head/*anatomy & histology ; Models, Genetic ; Molecular Sequence Data ; Phylogeny ; Polymorphism, Single Nucleotide ; *Quantitative Trait, Heritable ; Receptor, EphB2/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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  • 10
    Publication Date: 1997-01-03
    Description: The instability resulting from the relative motion of newly picked-up cometary photoions and the solar wind generates lower hybrid waves that are capable of accelerating electrons to the keV range of energies. These electrons may be responsible for the x-rays from comet C/Hyakutake 1996 B2 seen by the Rontgen X-ray Satellite. The inferred x-ray photon power depends on the electron energy, with keV electrons providing values of photon power two orders of magnitude greater than 100 eV electrons. These observations and in particular, spectral resolution of the x-rays, should provide more insight into the composition of the comet.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bingham -- Dawson -- Shapiro -- Mendis -- Kellett -- New York, N.Y. -- Science. 1997 Jan 3;275(5296):49-51.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉R. Bingham, B. J. Kellett, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, UK. J. M. Dawson, Department of Physics, University of California, Los Angeles, CA 90024, USA. V. D. Shapiro, Department of Physics, University of California at San Diego, La Jolla, CA 92092, USA. D. A. Mendis, Department of Electrical and Computing Science, University of California at San Diego, La Jolla, CA 92092, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8974386" 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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