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  • Humans  (4)
  • 550 - Earth sciences  (3)
  • Amino Acid Sequence
  • Calibration
  • Chemistry
  • Female
  • Life and Medical Sciences
  • 2010-2014  (7)
  • 1985-1989
  • 2011  (7)
  • 1
    Publication Date: 2011-11-15
    Description: The hemoglobins S and C protect carriers from severe Plasmodium falciparum malaria. Here, we found that these hemoglobinopathies affected the trafficking system that directs parasite-encoded proteins to the surface of infected erythrocytes. Cryoelectron tomography revealed that the parasite generated a host-derived actin cytoskeleton within the cytoplasm of wild-type red blood cells that connected the Maurer's clefts with the host cell membrane and to which transport vesicles were attached. The actin cytoskeleton and the Maurer's clefts were aberrant in erythrocytes containing hemoglobin S or C. Hemoglobin oxidation products, enriched in hemoglobin S and C erythrocytes, inhibited actin polymerization in vitro and may account for the protective role in malaria.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cyrklaff, Marek -- Sanchez, Cecilia P -- Kilian, Nicole -- Bisseye, Cyrille -- Simpore, Jacques -- Frischknecht, Friedrich -- Lanzer, Michael -- New York, N.Y. -- Science. 2011 Dec 2;334(6060):1283-6. doi: 10.1126/science.1213775. Epub 2011 Nov 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Infectious Diseases, Parasitology, Heidelberg University, 69120 Heidelberg, Germany. marek.cyrklaff@med.uni-heidelberg.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22075726" target="_blank"〉PubMed〈/a〉
    Keywords: Actin Cytoskeleton/metabolism/*ultrastructure ; Actins/*metabolism ; Cytoplasm/ultrastructure ; Electron Microscope Tomography ; Erythrocyte Membrane/ultrastructure ; Erythrocytes/metabolism/*parasitology/*ultrastructure ; Hemoglobin A/analysis ; Hemoglobin C/*analysis/genetics ; Hemoglobin C Disease/complications/metabolism ; Hemoglobin, Sickle/*analysis/genetics ; Humans ; Malaria, Falciparum/complications/metabolism/pathology ; Oxidation-Reduction ; Plasmodium falciparum/growth & development/*physiology ; Protein Transport ; Protozoan Proteins/metabolism ; Sickle Cell Trait/complications/metabolism ; Transport Vesicles/ultrastructure
    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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  • 2
    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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  • 3
    Publication Date: 2011-11-19
    Description: Natural products that elicit discomfort or pain represent invaluable tools for probing molecular mechanisms underlying pain sensation. Plant-derived irritants have predominated in this regard, but animal venoms have also evolved to avert predators by targeting neurons and receptors whose activation produces noxious sensations. As such, venoms provide a rich and varied source of small molecule and protein pharmacophores that can be exploited to characterize and manipulate key components of the pain-signalling pathway. With this in mind, here we perform an unbiased in vitro screen to identify snake venoms capable of activating somatosensory neurons. Venom from the Texas coral snake (Micrurus tener tener), whose bite produces intense and unremitting pain, excites a large cohort of sensory neurons. The purified active species (MitTx) consists of a heteromeric complex between Kunitz- and phospholipase-A2-like proteins that together function as a potent, persistent and selective agonist for acid-sensing ion channels (ASICs), showing equal or greater efficacy compared with acidic pH. MitTx is highly selective for the ASIC1 subtype at neutral pH; under more acidic conditions (pH 〈 6.5), MitTx massively potentiates (〉100-fold) proton-evoked activation of ASIC2a channels. These observations raise the possibility that ASIC channels function as coincidence detectors for extracellular protons and other, as yet unidentified, endogenous factors. Purified MitTx elicits robust pain-related behaviour in mice by activation of ASIC1 channels on capsaicin-sensitive nerve fibres. These findings reveal a mechanism whereby snake venoms produce pain, and highlight an unexpected contribution of ASIC1 channels to nociception.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3226747/" 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/PMC3226747/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bohlen, Christopher J -- Chesler, Alexander T -- Sharif-Naeini, Reza -- Medzihradszky, Katalin F -- Zhou, Sharleen -- King, David -- Sanchez, Elda E -- Burlingame, Alma L -- Basbaum, Allan I -- Julius, David -- F31NS065597/NS/NINDS NIH HHS/ -- P40 RR018300-09/RR/NCRR NIH HHS/ -- P40RR018300-09/RR/NCRR NIH HHS/ -- P41 GM103481/GM/NIGMS NIH HHS/ -- P41RR001614/RR/NCRR NIH HHS/ -- R01NS065071/NS/NINDS NIH HHS/ -- Canadian Institutes of Health Research/Canada -- Howard Hughes Medical Institute/ -- England -- Nature. 2011 Nov 16;479(7373):410-4. doi: 10.1038/nature10607.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology, University of California, San Francisco, California 94158-2517, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22094702" target="_blank"〉PubMed〈/a〉
    Keywords: Acid Sensing Ion Channels ; Amino Acid Sequence ; Animals ; Capsaicin/pharmacology ; Cells, Cultured ; Elapid Venoms/*chemistry/*pharmacology ; *Elapidae ; Hindlimb/drug effects/physiopathology ; Humans ; Hydrogen-Ion Concentration ; Ion Channel Gating/drug effects ; Male ; Mice ; Mice, Knockout ; Molecular Sequence Data ; Nerve Tissue Proteins/agonists/deficiency/genetics/*metabolism ; Nociception/drug effects/physiology ; Oocytes ; Pain/*chemically induced/metabolism/physiopathology ; *Protein Multimerization ; Protein Structure, Quaternary ; Protons ; Rats ; Sensory Receptor Cells/drug effects/metabolism ; Sodium Channel Agonists ; Sodium Channels/deficiency/genetics/*metabolism ; TRPV Cation Channels/metabolism ; Xenopus laevis
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 4
    Publication Date: 2011-10-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Saiz-Jimenez, Cesareo -- Cuezva, Soledad -- Jurado, Valme -- Fernandez-Cortes, Angel -- Porca, Estefania -- Benavente, David -- Canaveras, Juan C -- Sanchez-Moral, Sergio -- New York, N.Y. -- Science. 2011 Oct 7;334(6052):42-3. doi: 10.1126/science.1206788.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Natural Resources and Agrobiology, Spanish National Research Council (IRNAS-CSIC), 41012 Sevilla, Spain. saiz@irnase.csic.es〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21980097" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteria/*growth & development/isolation & purification/metabolism ; *Ecosystem ; *Geological Phenomena ; History, Ancient ; *Human Activities ; Humans ; Humidity ; Light ; Paintings/*history ; Spain ; Temperature
    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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  • 5
    Publication Date: 2020-02-12
    Keywords: 550 - Earth sciences
    Type: info:eu-repo/semantics/article
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  • 6
    Publication Date: 2020-02-12
    Keywords: 550 - Earth sciences
    Type: info:eu-repo/semantics/conferenceObject
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  • 7
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    In:  Mineralogical Magazine - Goldschmidt Conference Abstracts
    Publication Date: 2020-02-12
    Keywords: 550 - Earth sciences
    Type: info:eu-repo/semantics/article
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