Detection of Helicobacter pylori in gastric biopsies, saliva and dental plaques of dyspeptic patients from Marília, São Paulo, Brazil: presence of vacA and cagA genes
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | The Journal of venomous animals and toxins including tropical diseases (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992012000200008 |
Resumo: | Helicobacter pylori, a gram-negative bacterium, possesses two important virulence factors: the vacuolating toxin (vacA), and the cytotoxin-associated gene product (cagA). The aim of the present study was to evaluate the presence of H. pylori in the stomach and oral cavity of humans and compare the cagA and vacA genotypes of H. pylori found in different samples (stomach, saliva and dental plaque) from the same patient. Gastric biopsies, saliva and dental plaques were obtained from 62 dyspeptic adults. DNA was extracted and evaluated for the presence of H. pylori and the alleles cagA and vacA. Persons with gastritis had a higher frequency of H. pylori -positive samples in the stomach while positive samples from gastric biopsies were significantly correlated with those from the oral cavity. There was a high H. pylori frequency in patients while the cagA gene was associated with vacA s1 alleles in gastric biopsies. Our results suggest a reservoir of the species in the oral cavity and that, in one patient, more than one H. pylori strain may exist in the saliva, dental plaque and stomach. We found a relationship between gastric infection and the bacterium in the oral cavity, with the cytotoxin genotype varying between saliva and dental plaque. |
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The Journal of venomous animals and toxins including tropical diseases (Online) |
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Detection of Helicobacter pylori in gastric biopsies, saliva and dental plaques of dyspeptic patients from Marília, São Paulo, Brazil: presence of vacA and cagA genesHelicobacter pyloricagAvacAdental plaquedyspeptic patientsalivaHelicobacter pylori, a gram-negative bacterium, possesses two important virulence factors: the vacuolating toxin (vacA), and the cytotoxin-associated gene product (cagA). The aim of the present study was to evaluate the presence of H. pylori in the stomach and oral cavity of humans and compare the cagA and vacA genotypes of H. pylori found in different samples (stomach, saliva and dental plaque) from the same patient. Gastric biopsies, saliva and dental plaques were obtained from 62 dyspeptic adults. DNA was extracted and evaluated for the presence of H. pylori and the alleles cagA and vacA. Persons with gastritis had a higher frequency of H. pylori -positive samples in the stomach while positive samples from gastric biopsies were significantly correlated with those from the oral cavity. There was a high H. pylori frequency in patients while the cagA gene was associated with vacA s1 alleles in gastric biopsies. Our results suggest a reservoir of the species in the oral cavity and that, in one patient, more than one H. pylori strain may exist in the saliva, dental plaque and stomach. We found a relationship between gastric infection and the bacterium in the oral cavity, with the cytotoxin genotype varying between saliva and dental plaque.Centro de Estudos de Venenos e Animais Peçonhentos (CEVAP/UNESP)2012-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992012000200008Journal of Venomous Animals and Toxins including Tropical Diseases v.18 n.2 2012reponame:The Journal of venomous animals and toxins including tropical diseases (Online)instname:Universidade Estadual Paulista (UNESP)instacron:UNESP10.1590/S1678-91992012000200008info:eu-repo/semantics/openAccessRasmussen,LTLabio,RW deC Neto,ASilva,LCQueiroz,VFSmith,MACPayão,SLMeng2012-06-21T00:00:00Zoai:scielo:S1678-91992012000200008Revistahttp://www.scielo.br/jvatitdPUBhttps://old.scielo.br/oai/scielo-oai.php||editorial@jvat.org.br1678-91991678-9180opendoar:2012-06-21T00:00The Journal of venomous animals and toxins including tropical diseases (Online) - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Detection of Helicobacter pylori in gastric biopsies, saliva and dental plaques of dyspeptic patients from Marília, São Paulo, Brazil: presence of vacA and cagA genes |
title |
Detection of Helicobacter pylori in gastric biopsies, saliva and dental plaques of dyspeptic patients from Marília, São Paulo, Brazil: presence of vacA and cagA genes |
spellingShingle |
Detection of Helicobacter pylori in gastric biopsies, saliva and dental plaques of dyspeptic patients from Marília, São Paulo, Brazil: presence of vacA and cagA genes Rasmussen,LT Helicobacter pylori cagA vacA dental plaque dyspeptic patient saliva |
title_short |
Detection of Helicobacter pylori in gastric biopsies, saliva and dental plaques of dyspeptic patients from Marília, São Paulo, Brazil: presence of vacA and cagA genes |
title_full |
Detection of Helicobacter pylori in gastric biopsies, saliva and dental plaques of dyspeptic patients from Marília, São Paulo, Brazil: presence of vacA and cagA genes |
title_fullStr |
Detection of Helicobacter pylori in gastric biopsies, saliva and dental plaques of dyspeptic patients from Marília, São Paulo, Brazil: presence of vacA and cagA genes |
title_full_unstemmed |
Detection of Helicobacter pylori in gastric biopsies, saliva and dental plaques of dyspeptic patients from Marília, São Paulo, Brazil: presence of vacA and cagA genes |
title_sort |
Detection of Helicobacter pylori in gastric biopsies, saliva and dental plaques of dyspeptic patients from Marília, São Paulo, Brazil: presence of vacA and cagA genes |
author |
Rasmussen,LT |
author_facet |
Rasmussen,LT Labio,RW de C Neto,A Silva,LC Queiroz,VF Smith,MAC Payão,SLM |
author_role |
author |
author2 |
Labio,RW de C Neto,A Silva,LC Queiroz,VF Smith,MAC Payão,SLM |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Rasmussen,LT Labio,RW de C Neto,A Silva,LC Queiroz,VF Smith,MAC Payão,SLM |
dc.subject.por.fl_str_mv |
Helicobacter pylori cagA vacA dental plaque dyspeptic patient saliva |
topic |
Helicobacter pylori cagA vacA dental plaque dyspeptic patient saliva |
description |
Helicobacter pylori, a gram-negative bacterium, possesses two important virulence factors: the vacuolating toxin (vacA), and the cytotoxin-associated gene product (cagA). The aim of the present study was to evaluate the presence of H. pylori in the stomach and oral cavity of humans and compare the cagA and vacA genotypes of H. pylori found in different samples (stomach, saliva and dental plaque) from the same patient. Gastric biopsies, saliva and dental plaques were obtained from 62 dyspeptic adults. DNA was extracted and evaluated for the presence of H. pylori and the alleles cagA and vacA. Persons with gastritis had a higher frequency of H. pylori -positive samples in the stomach while positive samples from gastric biopsies were significantly correlated with those from the oral cavity. There was a high H. pylori frequency in patients while the cagA gene was associated with vacA s1 alleles in gastric biopsies. Our results suggest a reservoir of the species in the oral cavity and that, in one patient, more than one H. pylori strain may exist in the saliva, dental plaque and stomach. We found a relationship between gastric infection and the bacterium in the oral cavity, with the cytotoxin genotype varying between saliva and dental plaque. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992012000200008 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992012000200008 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1678-91992012000200008 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Centro de Estudos de Venenos e Animais Peçonhentos (CEVAP/UNESP) |
publisher.none.fl_str_mv |
Centro de Estudos de Venenos e Animais Peçonhentos (CEVAP/UNESP) |
dc.source.none.fl_str_mv |
Journal of Venomous Animals and Toxins including Tropical Diseases v.18 n.2 2012 reponame:The Journal of venomous animals and toxins including tropical diseases (Online) instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
The Journal of venomous animals and toxins including tropical diseases (Online) |
collection |
The Journal of venomous animals and toxins including tropical diseases (Online) |
repository.name.fl_str_mv |
The Journal of venomous animals and toxins including tropical diseases (Online) - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
||editorial@jvat.org.br |
_version_ |
1748958539217371136 |