14 research outputs found
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The origins and spread of the Neolithic in the Old World using Ancient Genomes
One of the biggest innovations in human prehistory was the advent of food production, consisting of the ability to grow crops and domesticate animals for consumption. This wide-scale transition from hunting and gathering to food production led to more permanent settlements, and set in motion major societal changes. In western Eurasia, this revolution spread from the Near East into Europe, Africa and diverse regions of Asia.
Agriculture was brought into Europe by the descendants of early Anatolian farmers starting approximately 8,000 years ago. But little was known of the people who developed agriculture in the Fertile Crescent: where they all closely related to the early Anatolian farmers, or were there multiple ethnic groups who developed agriculture in parallel? In the first data chapter, I use the first genome from a Neolithic woman from Ganj Dareh, in the Zagros Mountains (Iran), a site with evidence of early goat domestication 10,000 years ago. I showed that Western Iran wan inhabited by populations mostly similar to Hunter- gatherer populations from the Caucasus, but remarkably, very distinct from the Anatolian farmers who spread the Neolithic package into Europe. While a degree of cultural diffusion between Anatolia, Mesopotamia and the Zagros highlands likely happened, genetic dissimilarity supports a model in which Neolithic societies of that area were distinct.
The second chapter deals with how Africa was affected by population movements, originating in the Near East, during the Neolithic times. Characterising genetic diversity in Africa is a crucial step for analyses reconstructing human evolution. Using Mota, an ancient genome from a male from the Ethiopian highlands, I showed a backflow into Africa by populations closely related to the Anatolian Neolithic farmers.
The third chapter deals with some common problems and themes in the analysis of ancient DNA, such as merging capture datasets with diverse number of ascertained SNPs, combining capture and shotgun data in the same analysis, and the effect of UDG treatment in ancient samples. I describe the most common problems and their effect in summary statistics, and propose a guide on how to work with ancient DNA to avoid data compatibility problems.BBSRC DT
Upper Palaeolithic genomes reveal deep roots of modern Eurasians.
We extend the scope of European palaeogenomics by sequencing the genomes of Late Upper Palaeolithic (13,300 years old, 1.4-fold coverage) and Mesolithic (9,700 years old, 15.4-fold) males from western Georgia in the Caucasus and a Late Upper Palaeolithic (13,700 years old, 9.5-fold) male from Switzerland. While we detect Late Palaeolithic-Mesolithic genomic continuity in both regions, we find that Caucasus hunter-gatherers (CHG) belong to a distinct ancient clade that split from western hunter-gatherers ∼45 kya, shortly after the expansion of anatomically modern humans into Europe and from the ancestors of Neolithic farmers ∼25 kya, around the Last Glacial Maximum. CHG genomes significantly contributed to the Yamnaya steppe herders who migrated into Europe ∼3,000 BC, supporting a formative Caucasus influence on this important Early Bronze age culture. CHG left their imprint on modern populations from the Caucasus and also central and south Asia possibly marking the arrival of Indo-Aryan languages.This research was supported by the European Research Council (ERC) Starting Grant to R.P. (ERC-2010-StG 263441). D.B., M.H and AM. were also supported by the ERC (295729-CodeX, 310763-GeneFlow and 647787-LocalAdaptation respectively). The National Geographic Global Exploration Fund funded fieldwork in Satsurblia Cave l from April 2013 to February 2014 (grant- GEFNE78–13). V.S. was supported by a scholarship from the Gates Cambridge Trust and M.G.L. by a BBSRC DTP studentship. C.G. was supported by the Irish Research Council for Humanities and Social Sciences (IRCHSS) ERC Support Programme and the Marie-Curie Intra-European Fellowships (FP7-IEF-328024). R.M. was funded by the BEAN project of the Marie Curie ITN (289966) and L.C. by the Irish Research Council (GOIPG/2013/1219). R.L.M. was funded by the ALS Association of America (2284) and Fondation Thierry Latran (ALSIBD). M.C. was supported by Swiss NSF grant 31003A_156853. We acknowledge Shota Rusataveli Georgian National Science Foundation as well as the DJEI/DES/SFI/HEA Irish Centre for High-End Computing (ICHEC) for the provision of computational facilities and Science Foundation Ireland (12/ERC/B2227) for provision of sequencing facilities. We thank Valeria Mattiangeli and Matthew D. Teasdale for their assistance.This is the final version of the article. It was first available from NPG via http://dx.doi.org/10.1038/ncomms991
Genome-wide data from two early Neolithic East Asian individuals dating to 7700 years ago.
Ancient genomes have revolutionized our understanding of Holocene prehistory and, particularly, the Neolithic transition in western Eurasia. In contrast, East Asia has so far received little attention, despite representing a core region at which the Neolithic transition took place independently ~3 millennia after its onset in the Near East. We report genome-wide data from two hunter-gatherers from Devil's Gate, an early Neolithic cave site (dated to ~7.7 thousand years ago) located in East Asia, on the border between Russia and Korea. Both of these individuals are genetically most similar to geographically close modern populations from the Amur Basin, all speaking Tungusic languages, and, in particular, to the Ulchi. The similarity to nearby modern populations and the low levels of additional genetic material in the Ulchi imply a high level of genetic continuity in this region during the Holocene, a pattern that markedly contrasts with that reported for Europe.V.S. was supported by the Gates Cambridge Trust. R.P. was funded by the European Research Council (ERC) starting grant ADNABIOARC (263441) and the Irish Research Council Advanced Research Project Grant from January 2014 to December 2016. M.H. was supported by ERC Consolidator Grant 310763 “GeneFlow.” This work was supported by the Research Fund (1.140113.01) of Ulsan National Institute of Science and Technology to J.B. This work was also supported by the Research Fund (14-BR-SS-03) of Civil-Military Technology Cooperation Program to J.B. and Y.S.C. M.G.-L. was supported by a Biotechnology and Biological Sciences Research Council Doctoral Training Partnerships studentship. A.M. and A.E. were supported by the ERC Consolidator Grant 647787 “LocalAdaptation.” D.G.B. was funded by ERC Investigator grant 295729-CodeX
A922 Sequential measurement of 1 hour creatinine clearance (1-CRCL) in critically ill patients at risk of acute kidney injury (AKI)
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Design, In Vitro Evaluation and In Vivo Biocompatibility of Additive Manufacturing Three-Dimensional Printing of β beta-Tricalcium Phosphate Scaffolds for Bone Regeneration
The reconstruction of bone deficiencies remains a challenge due to the limitations of autologous bone grafting. The objective of this study is to evaluate the bone regeneration efficacy of additive manufacturing of tricalcium phosphate (TCP) implants using lithography-based ceramic manufacturing (LCM). LCM uses LithaBone TCP 300 slurry for 3D printing, producing cylindrical scaffolds. Four models of internal scaffold geometry were developed and compared. The in vitro studies included cell culture, differentiation, seeding, morphological studies and detection of early osteogenesis. The in vivo studies involved 42 Wistar rats divided into four groups (control, membrane, scaffold (TCP) and membrane with TCP). In each animal, unilateral right mandibular defects with a total thickness of 5 mm were surgically performed. The animals were sacrificed 3 and 6 months after surgery. Bone neoformation was evaluated by conventional histology, radiology, and micro-CT. Model A (spheres with intersecting and aligned arrays) showed higher penetration and interconnection. Histological and radiological analysis by micro-CT revealed increased bone formation in the grafted groups, especially when combined with a membrane. Our innovative 3D printing technology, combined with precise scaffold design and efficient cleaning, shows potential for bone regeneration. However, further refinement of the technique and long-term clinical studies are crucial to establish the safety and efficacy of these advanced 3D printed scaffolds in human patients
Ancient Ethiopia genome reveals extensive Eurasian admixture in Eastern Africa.
Characterizing genetic diversity in Africa is a crucial step for most analyses reconstructing the evolutionary history of anatomically modern humans. However, historic migrations from Eurasia into Africa have affected many contemporary populations, confounding inferences. Here, we present a 12.5× coverage ancient genome of an Ethiopian male (“Mota”) who lived approximately 4500 years ago. We use this genome to demonstrate that the Eurasian backflow into Africa came from a population closely related to Early Neolithic farmers, who had colonized Europe 4000 years earlier
Teachers' network and digital repository of educational resources: A history of contemporary capitalism I. The crisis of the liberal State and the first globalization through filmic, literary and aesthetic sources.
Se trata de crear un repositorio digital de apoyo a la docencia virtual, con contribuciones innovadoras en el empleo de fuentes artísticas y culturales para el estudio de la crisis del Estado liberal y de la primera globalización (1920-1930).This project aims to create a digital repository to support virtual teaching, with innovative contributions in the use of artistic and cultural sources for the study of the crisis of the liberal State and the first globalization (1920-1930).Depto. de Filosofía y SociedadFac. de FilosofíaFALSEUCMsubmitte
Red de docentes y repositorio digital de recursos educativos: Una historia del capitalismo contemporáneo III. El neoliberalismo y la crisis multifactorial contemporánea a través fuentes fílmicas, literarias y estéticas
Depto. de Filosofía y SociedadFac. de FilosofíaFALSEsubmitte