نتایج جستجو برای: adna

تعداد نتایج: 215  

Journal: :Biology letters 2013
Franck Lejzerowicz Philippe Esling Wojciech Majewski Witold Szczuciński Johan Decelle Cyril Obadia Pedro Martinez Arbizu Jan Pawlowski

Deep-sea subsurface sediments are the most important archives of marine biodiversity. Until now, these archives were studied mainly using the microfossil record, disregarding large amounts of DNA accumulated on the deep-sea floor. Accessing ancient DNA (aDNA) molecules preserved down-core would offer unique insights into the history of marine biodiversity, including both fossilized and non-foss...

2007
David Caramelli Giampietro Lago

The first aDNA studies used bacterial cloning to amplify small sequences retrieved from skins of animal and human mummies, and revealed the inefficient reaction kinetics of this technique (Higuchi et al., 1984; Pääbo 1985, 1989). These studies demonstrated that the genetic material surviving in ancient specimens was often principally microbial or fungal in origin. Endogenous DNA was generally l...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2016
Montgomery Slatkin Fernando Racimo

We review studies of genomic data obtained by sequencing hominin fossils with particular emphasis on the unique information that ancient DNA (aDNA) can provide about the demographic history of humans and our closest relatives. We concentrate on nuclear genomic sequences that have been published in the past few years. In many cases, particularly in the Arctic, the Americas, and Europe, aDNA has ...

Journal: :American journal of physical anthropology 2011
Marie-France Deguilloux Ludovic Soler Marie-Hélène Pemonge Chris Scarre Roger Joussaume Luc Laporte

Recent paleogenetic studies have confirmed that the spread of the Neolithic across Europe was neither genetically nor geographically uniform. To extend existing knowledge of the mitochondrial European Neolithic gene pool, we examined six samples of human skeletal material from a French megalithic long mound (c.4200 cal BC). We retrieved HVR-I sequences from three individuals and demonstrated th...

2014
Nathan Wales Kenneth Andersen Enrico Cappellini María C. Ávila-Arcos M. Thomas P. Gilbert

Ancient DNA (aDNA) recovered from archaeobotanical remains can provide key insights into many prominent archaeological research questions, including processes of domestication, past subsistence strategies, and human interactions with the environment. However, it is often difficult to isolate aDNA from ancient plant materials, and furthermore, such DNA extracts frequently contain inhibitory subs...

2017
Roseina Woods Melissa M Marr Selina Brace Ian Barnes

The field of ancient DNA (aDNA) has recently been in a state of exponential growth, largely driven by the uptake of Next Generation Sequencing (NGS) techniques. Much of this work has focused on the mammalian megafauna and ancient humans, with comparatively less studies looking at micromammal fauna, despite the potential of these species in testing evolutionary, environmental and taxonomic theor...

Journal: :Trends in ecology & evolution 2016
David Gokhman Eran Meshorer Liran Carmel

Recent years have witnessed the rise of ancient DNA (aDNA) technology, allowing comparative genomics to be carried out at unprecedented time resolution. While it is relatively straightforward to use aDNA to identify recent genomic changes, it is much less clear how to utilize it to study changes in epigenetic regulation. Here we review recent works demonstrating that highly degraded aDNA still ...

Journal: :NTM Zeitschrift für Geschichte der Wissenschaften, Technik und Medizin 2017

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2000
T Hines

Pregnancy is associated with blunted reflex responses to cardiac and arterial baroreceptor stimulation. We tested the hypothesis that arterial baroreceptor afferent discharge is attenuated in response to a pressure stimulus in pregnant rats. Multifiber aortic depressor nerve activity (ADNA), mean arterial pressure (MAP), and heart rate were measured in anesthetized (pentobarbital sodium, 35 mg/...

Journal: :Memorias do Instituto Oswaldo Cruz 2010
Chang Seok Oh Min Seo Nam Jin Lim Sang Jun Lee Eun-Joo Lee Soong Deok Lee Dong Hoon Shin

In this study, Ascaris DNA was extracted and sequenced from a medieval archaeological sample in Korea. While Ascaris eggs were confirmed to be of human origin by archaeological evidence, it was not possible to pinpoint the exact species due to close genetic relationships among them. Despite this shortcoming, this is the first Ascaris ancient DNA (aDNA) report from a medieval Asian country and t...

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