The Characterization of Helicobacter pylori DNA Associated with Ancient Human Remains Recovered from a Canadian Glacier
Helicobacter pylori is a gram-negative bacterium that colonizes the stomach of nearly half of the world’s population. Genotypic characterization of H. pylori strains involves the analysis of virulence-associated genes, such as vacA, which has multiple alleles. Previous phylogenetic analyses have rev...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.293.4946 2023-05-15T16:16:43+02:00 The Characterization of Helicobacter pylori DNA Associated with Ancient Human Remains Recovered from a Canadian Glacier Treena Swanston Monique Haakensen Harry Deneer Ernest G. Walker The Pennsylvania State University CiteSeerX Archives 2011 application/zip http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.293.4946 en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.293.4946 Metadata may be used without restrictions as long as the oai identifier remains attached to it. ftp://ftp.ncbi.nlm.nih.gov/pub/pmc/da/fc/PLoS_One_2011_Feb_16_6(2)_e16864.tar.gz text 2011 ftciteseerx 2016-01-07T21:40:50Z Helicobacter pylori is a gram-negative bacterium that colonizes the stomach of nearly half of the world’s population. Genotypic characterization of H. pylori strains involves the analysis of virulence-associated genes, such as vacA, which has multiple alleles. Previous phylogenetic analyses have revealed a connection between modern H. pylori strains and the movement of ancient human populations. In this study, H. pylori DNA was amplified from the stomach tissue of the Kwäday Dän Ts’ìnchi individual. This ancient individual was recovered from the Samuel Glacier in Tatshenshini-Alsek Park, British Columbia, Canada on the traditional territory of the Champagne and Aishihik First Nations and radiocarbon dated to a timeframe of approximately AD 1670 to 1850. This is the first ancient H. pylori strain to be characterized with vacA sequence data. The Tatshenshini H. pylori strain has a potential hybrid vacA m2a/m1d middle (m) region allele and a vacA s2 signal (s) region allele. A vacA s2 allele is more commonly identified with Western strains, and this suggests that European strains were present in northwestern Canada during the ancient individual’s time. Phylogenetic analysis indicated that the vacA m1d region of the ancient strain clusters with previously published novel Native American strains that are closely related to Asian strains. This indicates a past connection between the Kwäday Dän Ts’ìnchi individual and the ancestors who arrived in Text First Nations Unknown Aishihik ENVELOPE(-137.512,-137.512,61.598,61.598) British Columbia ENVELOPE(-125.003,-125.003,54.000,54.000) Canada Champagne ENVELOPE(-136.483,-136.483,60.788,60.788) Samuel Glacier ENVELOPE(-136.804,-136.804,59.699,59.699) Tatshenshini-Alsek Park ENVELOPE(-137.454,-137.454,59.599,59.599) |
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Open Polar |
collection |
Unknown |
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ftciteseerx |
language |
English |
description |
Helicobacter pylori is a gram-negative bacterium that colonizes the stomach of nearly half of the world’s population. Genotypic characterization of H. pylori strains involves the analysis of virulence-associated genes, such as vacA, which has multiple alleles. Previous phylogenetic analyses have revealed a connection between modern H. pylori strains and the movement of ancient human populations. In this study, H. pylori DNA was amplified from the stomach tissue of the Kwäday Dän Ts’ìnchi individual. This ancient individual was recovered from the Samuel Glacier in Tatshenshini-Alsek Park, British Columbia, Canada on the traditional territory of the Champagne and Aishihik First Nations and radiocarbon dated to a timeframe of approximately AD 1670 to 1850. This is the first ancient H. pylori strain to be characterized with vacA sequence data. The Tatshenshini H. pylori strain has a potential hybrid vacA m2a/m1d middle (m) region allele and a vacA s2 signal (s) region allele. A vacA s2 allele is more commonly identified with Western strains, and this suggests that European strains were present in northwestern Canada during the ancient individual’s time. Phylogenetic analysis indicated that the vacA m1d region of the ancient strain clusters with previously published novel Native American strains that are closely related to Asian strains. This indicates a past connection between the Kwäday Dän Ts’ìnchi individual and the ancestors who arrived in |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Treena Swanston Monique Haakensen Harry Deneer Ernest G. Walker |
spellingShingle |
Treena Swanston Monique Haakensen Harry Deneer Ernest G. Walker The Characterization of Helicobacter pylori DNA Associated with Ancient Human Remains Recovered from a Canadian Glacier |
author_facet |
Treena Swanston Monique Haakensen Harry Deneer Ernest G. Walker |
author_sort |
Treena Swanston |
title |
The Characterization of Helicobacter pylori DNA Associated with Ancient Human Remains Recovered from a Canadian Glacier |
title_short |
The Characterization of Helicobacter pylori DNA Associated with Ancient Human Remains Recovered from a Canadian Glacier |
title_full |
The Characterization of Helicobacter pylori DNA Associated with Ancient Human Remains Recovered from a Canadian Glacier |
title_fullStr |
The Characterization of Helicobacter pylori DNA Associated with Ancient Human Remains Recovered from a Canadian Glacier |
title_full_unstemmed |
The Characterization of Helicobacter pylori DNA Associated with Ancient Human Remains Recovered from a Canadian Glacier |
title_sort |
characterization of helicobacter pylori dna associated with ancient human remains recovered from a canadian glacier |
publishDate |
2011 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.293.4946 |
long_lat |
ENVELOPE(-137.512,-137.512,61.598,61.598) ENVELOPE(-125.003,-125.003,54.000,54.000) ENVELOPE(-136.483,-136.483,60.788,60.788) ENVELOPE(-136.804,-136.804,59.699,59.699) ENVELOPE(-137.454,-137.454,59.599,59.599) |
geographic |
Aishihik British Columbia Canada Champagne Samuel Glacier Tatshenshini-Alsek Park |
geographic_facet |
Aishihik British Columbia Canada Champagne Samuel Glacier Tatshenshini-Alsek Park |
genre |
First Nations |
genre_facet |
First Nations |
op_source |
ftp://ftp.ncbi.nlm.nih.gov/pub/pmc/da/fc/PLoS_One_2011_Feb_16_6(2)_e16864.tar.gz |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.293.4946 |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766002568451850240 |