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  • Diet/*history  (1)
  • Genome, Bacterial/*genetics  (1)
  • 2015-2019  (2)
  • 1
    Publication Date: 2016-01-09
    Description: The stomach bacterium Helicobacter pylori is one of the most prevalent human pathogens. It has dispersed globally with its human host, resulting in a distinct phylogeographic pattern that can be used to reconstruct both recent and ancient human migrations. The extant European population of H. pylori is known to be a hybrid between Asian and African bacteria, but there exist different hypotheses about when and where the hybridization took place, reflecting the complex demographic history of Europeans. Here, we present a 5300-year-old H. pylori genome from a European Copper Age glacier mummy. The "Iceman" H. pylori is a nearly pure representative of the bacterial population of Asian origin that existed in Europe before hybridization, suggesting that the African population arrived in Europe within the past few thousand years.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4775254/" 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/PMC4775254/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maixner, Frank -- Krause-Kyora, Ben -- Turaev, Dmitrij -- Herbig, Alexander -- Hoopmann, Michael R -- Hallows, Janice L -- Kusebauch, Ulrike -- Vigl, Eduard Egarter -- Malfertheiner, Peter -- Megraud, Francis -- O'Sullivan, Niall -- Cipollini, Giovanna -- Coia, Valentina -- Samadelli, Marco -- Engstrand, Lars -- Linz, Bodo -- Moritz, Robert L -- Grimm, Rudolf -- Krause, Johannes -- Nebel, Almut -- Moodley, Yoshan -- Rattei, Thomas -- Zink, Albert -- 2P50 GM076547/GM/NIGMS NIH HHS/ -- P50 GM076547/GM/NIGMS NIH HHS/ -- R01 GM087221/GM/NIGMS NIH HHS/ -- S10 RR027584/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2016 Jan 8;351(6269):162-5. doi: 10.1126/science.aad2545.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Mummies and the Iceman, European Academy of Bozen/Bolzano (EURAC), Viale Druso 1, 39100 Bolzano, Italy. frank.maixner@eurac.edu albert.zink@eurac.edu. ; Institute of Clinical Molecular Biology, Kiel University, Schittenhelmstrasse 12, 24105 Kiel, Germany. ; CUBE-Division of Computational Systems Biology, Department of Microbiology and Ecosystem Science, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria. ; Institute for Archaeological Sciences, University of Tubingen, Rumelinstrasse 23, 72072 Tubingen, Germany. Max Planck Institute for the Science of Human History, Kahlaische Strasse 10, 07745 Jena, Germany. ; Institute for Systems Biology, 401 Terry Avenue North, Seattle, WA 98109, USA. ; Scuola Superiore Sanitaria Provinciale "Claudiana," Via Lorenz Bohler 13, 39100 Bolzano, Italy. ; Department of Gastroenterology, Hepatology, and Infectious Diseases, Otto-von-Guericke University, Leipziger Strasse 44, 39120 Magdeburg, Germany. ; Universite de Bordeaux, Centre National de Reference des Helicobacters et Campylobacters and INSERM U853, 146 rue Leo Saignat, 33076 Bordeaux, France. ; Institute for Mummies and the Iceman, European Academy of Bozen/Bolzano (EURAC), Viale Druso 1, 39100 Bolzano, Italy. ; Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, 141 83 Stockholm, Sweden. ; Department of Veterinary and Biomedical Sciences, Pennsylvania State University, University Park, PA 16802, USA. ; Robert Mondavi Institute for Food Science, University of California, Davis, CA 95616, USA. ; Department of Zoology, University of Venda, Private Bag X5050, Thohoyandou 0950, Republic of South Africa. Department of Integrative Biology and Evolution, Konrad Lorenz Institute for Ethology, University of Veterinary Medicine Vienna, Savoyenstrasse 1a, 1160 Vienna, Austria.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26744403" target="_blank"〉PubMed〈/a〉
    Keywords: Asia ; Chromosome Mapping ; DNA, Bacterial/genetics/isolation & purification ; Europe ; Genome, Bacterial/*genetics ; Helicobacter Infections/*microbiology ; Helicobacter pylori/*genetics/isolation & purification ; Human Migration ; Humans ; *Hybridization, Genetic ; Ice Cover/microbiology ; Mummies/microbiology ; Phylogeny ; Phylogeography ; Sequence Analysis, DNA ; Stomach/*microbiology
    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: 2016-03-10
    Description: The origins of the genus Homo are murky, but by H. erectus, bigger brains and bodies had evolved that, along with larger foraging ranges, would have increased the daily energetic requirements of hominins. Yet H. erectus differs from earlier hominins in having relatively smaller teeth, reduced chewing muscles, weaker maximum bite force capabilities, and a relatively smaller gut. This paradoxical combination of increased energy demands along with decreased masticatory and digestive capacities is hypothesized to have been made possible by adding meat to the diet, by mechanically processing food using stone tools, or by cooking. Cooking, however, was apparently uncommon until 500,000 years ago, and the effects of carnivory and Palaeolithic processing techniques on mastication are unknown. Here we report experiments that tested how Lower Palaeolithic processing technologies affect chewing force production and efficacy in humans consuming meat and underground storage organs (USOs). We find that if meat comprised one-third of the diet, the number of chewing cycles per year would have declined by nearly 2 million (a 13% reduction) and total masticatory force required would have declined by 15%. Furthermore, by simply slicing meat and pounding USOs, hominins would have improved their ability to chew meat into smaller particles by 41%, reduced the number of chews per year by another 5%, and decreased masticatory force requirements by an additional 12%. Although cooking has important benefits, it appears that selection for smaller masticatory features in Homo would have been initially made possible by the combination of using stone tools and eating meat.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zink, Katherine D -- Lieberman, Daniel E -- England -- Nature. 2016 Mar 24;531(7595):500-3. doi: 10.1038/nature16990. Epub 2016 Mar 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Human Evolutionary Biology, Harvard University, 11 Divinity Avenue, Cambridge, Massachusetts 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26958832" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Animals ; Bite Force ; Carnivory ; Diet/*history ; Female ; Food Handling/*history ; Goats ; History, Ancient ; Hominidae ; Humans ; Male ; Mastication/*physiology ; Meat/*history ; Particle Size ; Plants ; Tool Use Behavior ; Tooth/physiology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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