Helicobacter pylori detection in gastric biopsies, saliva and dental plaque of Brazilian dyspeptic patients
Mem. Inst. Oswaldo Cruz
;
105(3): 326-330, May 2010. ilus, tab
Article
in English
| LILACS
| ID: lil-547305
ABSTRACT
Helicobacter pylori is an important human pathogen that causes chronic gastritis and is associated with the development of peptic ulcer disease and gastric malignancies. The oral cavity has been implicated as a potential H. pylori reservoir and may therefore be involved in the reinfection of the stomach, which can sometimes occur following treatment of an H. pylori infection. The objectives of this paper were (i) to determine the presence of H. pylori in the oral cavity and (ii) to examine the relationship between oral H. pylori and subsequent gastritis. Gastric biopsies, saliva samples and dental plaques were obtained from 78 dyspeptic adults. DNA was extracted and evaluated for the presence of H. pylori using polymerase chain reaction and Southern blotting methods. Persons with gastritis were frequently positive for H. pylori in their stomachs (p < 0.0001) and there was a statistically significant correlation between the presence of H. pylori in gastric biopsies and the oral cavity (p < 0.0001). Our results suggest a relationship between gastric infection and the presence of this bacterium in the oral cavity. Despite this, H. pylori were present in the oral cavity with variable distribution between saliva and dental plaques, suggesting the existence of a reservoir for the species and a potential association with gastric reinfection.
Full text:
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Index:
LILACS (Americas)
Main subject:
Saliva
/
Helicobacter pylori
/
Helicobacter Infections
/
Dental Plaque
/
Dyspepsia
/
Gastritis
Type of study:
Diagnostic study
Limits:
Female
/
Humans
/
Male
Country/Region as subject:
South America
/
Brazil
Language:
English
Journal:
Mem. Inst. Oswaldo Cruz
Journal subject:
Tropical Medicine
/
Parasitology
Year:
2010
Type:
Article
/
Project document
Affiliation country:
Brazil
Institution/Affiliation country:
Faculdade de Medicina de Marília/BR
/
Faculdades Integradas de Ourinhos/BR
/
Universidade Federal de São Paulo/BR
/
Universidade do Sagrado Coração/BR
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