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  • 1
    Publication Date: 2011-03-29
    Description: Loss of function of the gene SCN9A, encoding the voltage-gated sodium channel Na(v)1.7, causes a congenital inability to experience pain in humans. Here we show that Na(v)1.7 is not only necessary for pain sensation but is also an essential requirement for odour perception in both mice and humans. We examined human patients with loss-of-function mutations in SCN9A and show that they are unable to sense odours. To establish the essential role of Na(v)1.7 in odour perception, we generated conditional null mice in which Na(v)1.7 was removed from all olfactory sensory neurons. In the absence of Na(v)1.7, these neurons still produce odour-evoked action potentials but fail to initiate synaptic signalling from their axon terminals at the first synapse in the olfactory system. The mutant mice no longer display vital, odour-guided behaviours such as innate odour recognition and avoidance, short-term odour learning, and maternal pup retrieval. Our study creates a mouse model of congenital general anosmia and provides new strategies to explore the genetic basis of the human sense of smell.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3674497/" 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/PMC3674497/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weiss, Jan -- Pyrski, Martina -- Jacobi, Eric -- Bufe, Bernd -- Willnecker, Vivienne -- Schick, Bernhard -- Zizzari, Philippe -- Gossage, Samuel J -- Greer, Charles A -- Leinders-Zufall, Trese -- Woods, C Geoffrey -- Wood, John N -- Zufall, Frank -- BB/F000227/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- G0901905/Medical Research Council/United Kingdom -- R01 DC000210/DC/NIDCD NIH HHS/ -- Biotechnology and Biological Sciences Research Council/United Kingdom -- Medical Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- England -- Nature. 2011 Apr 14;472(7342):186-90. doi: 10.1038/nature09975. Epub 2011 Mar 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology, University of Saarland School of Medicine, 66421 Homburg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21441906" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Behavior, Animal ; Disease Models, Animal ; Female ; Gene Expression Profiling ; Humans ; Male ; Mice ; Mutant Proteins/*genetics/*metabolism ; Mutation/*genetics ; NAV1.7 Voltage-Gated Sodium Channel ; Odors/analysis ; Olfaction Disorders/congenital/*genetics/pathology/*physiopathology ; Olfactory Mucosa/cytology/pathology ; Olfactory Pathways/metabolism/pathology/physiopathology ; Olfactory Perception/genetics/physiology ; Olfactory Receptor Neurons/metabolism/pathology ; Pain/genetics/physiopathology ; Phenotype ; Smell/genetics/physiology ; Sodium Channels/deficiency/*genetics/metabolism ; Synapses/metabolism/pathology ; Urine/chemistry
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2014-08-22
    Description: The timing of Neanderthal disappearance and the extent to which they overlapped with the earliest incoming anatomically modern humans (AMHs) in Eurasia are key questions in palaeoanthropology. Determining the spatiotemporal relationship between the two populations is crucial if we are to understand the processes, timing and reasons leading to the disappearance of Neanderthals and the likelihood of cultural and genetic exchange. Serious technical challenges, however, have hindered reliable dating of the period, as the radiocarbon method reaches its limit at approximately 50,000 years ago. Here we apply improved accelerator mass spectrometry (14)C techniques to construct robust chronologies from 40 key Mousterian and Neanderthal archaeological sites, ranging from Russia to Spain. Bayesian age modelling was used to generate probability distribution functions to determine the latest appearance date. We show that the Mousterian ended by 41,030-39,260 calibrated years bp (at 95.4% probability) across Europe. We also demonstrate that succeeding 'transitional' archaeological industries, one of which has been linked with Neanderthals (Chatelperronian), end at a similar time. Our data indicate that the disappearance of Neanderthals occurred at different times in different regions. Comparing the data with results obtained from the earliest dated AMH sites in Europe, associated with the Uluzzian technocomplex, allows us to quantify the temporal overlap between the two human groups. The results reveal a significant overlap of 2,600-5,400 years (at 95.4% probability). This has important implications for models seeking to explain the cultural, technological and biological elements involved in the replacement of Neanderthals by AMHs. A mosaic of populations in Europe during the Middle to Upper Palaeolithic transition suggests that there was ample time for the transmission of cultural and symbolic behaviours, as well as possible genetic exchanges, between the two groups.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Higham, Tom -- Douka, Katerina -- Wood, Rachel -- Ramsey, Christopher Bronk -- Brock, Fiona -- Basell, Laura -- Camps, Marta -- Arrizabalaga, Alvaro -- Baena, Javier -- Barroso-Ruiz, Cecillio -- Bergman, Christopher -- Boitard, Coralie -- Boscato, Paolo -- Caparros, Miguel -- Conard, Nicholas J -- Draily, Christelle -- Froment, Alain -- Galvan, Bertila -- Gambassini, Paolo -- Garcia-Moreno, Alejandro -- Grimaldi, Stefano -- Haesaerts, Paul -- Holt, Brigitte -- Iriarte-Chiapusso, Maria-Jose -- Jelinek, Arthur -- Jorda Pardo, Jesus F -- Maillo-Fernandez, Jose-Manuel -- Marom, Anat -- Maroto, Julia -- Menendez, Mario -- Metz, Laure -- Morin, Eugene -- Moroni, Adriana -- Negrino, Fabio -- Panagopoulou, Eleni -- Peresani, Marco -- Pirson, Stephane -- de la Rasilla, Marco -- Riel-Salvatore, Julien -- Ronchitelli, Annamaria -- Santamaria, David -- Semal, Patrick -- Slimak, Ludovic -- Soler, Joaquim -- Soler, Narcis -- Villaluenga, Aritza -- Pinhasi, Ron -- Jacobi, Roger -- England -- Nature. 2014 Aug 21;512(7514):306-9. doi: 10.1038/nature13621.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Oxford Radiocarbon Accelerator Unit, Research Laboratory for Archaeology &the History of Art, University of Oxford, Oxford OX1 3QY, UK. ; 1] Oxford Radiocarbon Accelerator Unit, Research Laboratory for Archaeology &the History of Art, University of Oxford, Oxford OX1 3QY, UK [2] Research School for Earth Sciences, Australian National University, Canberra 0200, Australia. ; School of Geography, Archaeology and Palaeoecology (GAP), Queen's University Belfast, Belfast BT7 1NN, UK. ; School of Languages, Literatures and Cultures, College Park, 4102 Jimenez Hall, University of Maryland, Maryland 20742-4821, USA. ; Research Team on Prehistory (IT-622-13), IKERBASQUE, University of the Basque Country (UPV-EHU), Tomas y Valiente Street, 01006 Vitoria-Gasteiz, Spain. ; Departimento Prehistoria y Arqueologia, Universidad Autonoma de Madrid, Campus Cantoblanco, 28049 Madrid, Spain. ; Fundacion Instituto de Investigacion de Prehistoria y Evolucion Humana, Plaza del Coso 1, 14900 Lucena, Cordoba, Spain. ; URS, 525 Vine Street, Suite 1800, Cincinnati, Ohio 45202, USA. ; 8 rue des Sapins, 67100 Strasbourg, France. ; Dipartimento di Scienze Fisiche, della Terra e dell'Ambiente, U.R. Preistoria e Antropologia, Universita degli Studi di Siena, Via Laterina 8, 53100 Siena, Italy. ; Departement de Prehistoire, Museum National d'Histoire Naturelle, 75013 Paris, France. ; 1] Abt. Altere Urgeschichte und Quartarokologie, Universitat Tubingen, Schloss Hohentubingen, 72070 Tubingen, Germany [2] Tubingen Senckenberg Center for Human Evolution and Paleoecology, Schloss Hohentubingen, 72070 Tubingen, Germany. ; Service public de Wallonie, DGO4, Service de l'Archeologie, rue des Martyrs, 22, B-6700 Arlon, Belgium. ; Laboratoire d'Eco-antropologie et Ethnobiologie, Musee de l'Homme, 17 place du Trocadero, 75116 Paris, France. ; Departamento de Prehistoria, Arqueologia, Antropologia e Historia Antigua, Universidad de La Laguna, Campus de Guajara, 38071 Tenerife, Spain. ; 1] Monrepos Archaeological Research Centre and Museum for Human Behavioural Evolution, Schloss Monrepos, D-56567 Neuwied, Germany [2] The Cantabria International Institute for Prehistoric Research (IIIPC), University of Cantabria, Avda. Los Castros, s/n. 39005 Santander, Spain. ; Laboratorio di Preistoria 'B. Bagolini', Dipartimento di Lettere e Filosofia, Universita degli Studi di Trento, via Tommaso Gar, 14 I-38122 Trento, Italy. ; Institut Royal des Sciences Naturelles de Belgique, rue Vautier 29, B-1000 Brussels, Belgium. ; Department of Anthropology, University of Massachusetts, 103 Machmer Hall, Amherst, Massachusetts 01003, USA. ; School of Anthropology, Emil W. Haury Building, University of Arizona, Tucson, Arizona 85721-0030, USA. ; Departamento de Prehistoria y Arqueologia, UNED. Paseo Senda del Rey 7, 20840, Madrid, Spain. ; 1] Oxford Radiocarbon Accelerator Unit, Research Laboratory for Archaeology &the History of Art, University of Oxford, Oxford OX1 3QY, UK [2] The Kimmel Center for Archaeological Science, Weizmann Institute of Science, Rehovot 76100, Israel. ; rea de Prehistoria, Universitat de Girona, pl. Ferrater Mora 1, 17071 Girona, Spain. ; CNRS, UMR 5608, TRACES, Toulouse Jean Jaures University, Maison de la Recherche, 5 Allees Antonio Machado, 31058 Toulouse, Cedex 9, France. ; Department of Anthropology, Trent University, Life and Health Sciences Building Block C, 2140 East Bank Drive, Peterborough, Ontario K9J 7B8, Canada. ; Dipartimento di Antichita, Filosofia e Storia, Universita di Genova, Via Balbi 2, Genova I-16126, Italy. ; Ephoreia of Paleoanthropology of Southern Greece, Ardittou 34B, Athens 11636, Greece. ; Universita di Ferrara, Dipartimento di Studi Umanistici, Sezione di Scienze Preistoriche e Antropologiche, Corso Ercole I d'Este 32, I-44100 Ferrara, Italy. ; Service public de Wallonie, DGO4, Direction de l'Archeologie, rue des Brigades d'Irlande, 1, B-5100 Jambes, Belgium. ; Departamento de Historia, Universidad de Oviedo, c/Teniente Alfonso Martinez, s/n, 33011 Oviedo, Spain. ; Departement d'Anthropologie, Universite de Montreal, C. P. 6128, Succursale Centre-ville, Montreal, Quebec H3T 1N8, Canada. ; Service of Scientific Heritage, Royal Belgian Institute of Natural Sciences, 1000 Brussels, Belgium. ; Monrepos Archaeological Research Centre and Museum for Human Behavioural Evolution, Schloss Monrepos, D-56567 Neuwied, Germany. ; UCD Earth Institute and School of Archaeology, University College Dublin, Belfield, Dublin 4, Ireland. ; 1] Department of Prehistory and Europe, Franks House, The British Museum, London N1 5QJ, UK [2] The Natural History Museum, Cromwell Road, London SW7 5BD, UK [3].〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25143113" target="_blank"〉PubMed〈/a〉
    Keywords: Acculturation/*history ; Animals ; Bayes Theorem ; *Extinction, Biological ; *Geography ; History, Ancient ; Humans ; Mass Spectrometry ; *Neanderthals/genetics/physiology ; Radiometric Dating ; *Spatio-Temporal Analysis ; Time Factors ; Tool Use Behavior ; Uncertainty
    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: 2011-11-04
    Description: The earliest anatomically modern humans in Europe are thought to have appeared around 43,000-42,000 calendar years before present (43-42 kyr cal BP), by association with Aurignacian sites and lithic assemblages assumed to have been made by modern humans rather than by Neanderthals. However, the actual physical evidence for modern humans is extremely rare, and direct dates reach no farther back than about 41-39 kyr cal BP, leaving a gap. Here we show, using stratigraphic, chronological and archaeological data, that a fragment of human maxilla from the Kent's Cavern site, UK, dates to the earlier period. The maxilla (KC4), which was excavated in 1927, was initially diagnosed as Upper Palaeolithic modern human. In 1989, it was directly radiocarbon dated by accelerator mass spectrometry to 36.4-34.7 kyr cal BP. Using a Bayesian analysis of new ultrafiltered bone collagen dates in an ordered stratigraphic sequence at the site, we show that this date is a considerable underestimate. Instead, KC4 dates to 44.2-41.5 kyr cal BP. This makes it older than any other equivalently dated modern human specimen and directly contemporary with the latest European Neanderthals, thus making its taxonomic attribution crucial. We also show that in 13 dental traits KC4 possesses modern human rather than Neanderthal characteristics; three other traits show Neanderthal affinities and a further seven are ambiguous. KC4 therefore represents the oldest known anatomically modern human fossil in northwestern Europe, fills a key gap between the earliest dated Aurignacian remains and the earliest human skeletal remains, and demonstrates the wide and rapid dispersal of early modern humans across Europe more than 40 kyr ago.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Higham, Tom -- Compton, Tim -- Stringer, Chris -- Jacobi, Roger -- Shapiro, Beth -- Trinkaus, Erik -- Chandler, Barry -- Groning, Flora -- Collins, Chris -- Hillson, Simon -- O'Higgins, Paul -- FitzGerald, Charles -- Fagan, Michael -- England -- Nature. 2011 Nov 2;479(7374):521-4. doi: 10.1038/nature10484.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Oxford Radiocarbon Accelerator Unit, Research Laboratory for Archaeology and the History of Art, University of Oxford, Oxford OX1 3QY, UK. thomas.higham@rlaha.ox.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22048314" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bayes Theorem ; Caves ; Dentition ; Emigration and Immigration/*history ; Fossils ; Great Britain ; History, Ancient ; Humans ; Maxilla/*anatomy & histology ; Neanderthals/anatomy & histology ; Radiometric Dating
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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