TY - JOUR
T1 - Genotipos vacA de Helicobacter pylori en cavidad oral y estómago de pacientes con gastritis crónica y úlcera gástrica
AU - Román-Román, Adolfo
AU - Giono-Cerezo, Silvia
AU - Camorlinga-Ponce, Margarita
AU - Martínez-Carrillo, Dinorah Nashely
AU - Loaiza-Loeza, Salome
AU - Fernández-Tilapa, Gloria
N1 - Funding Information:
This work was supported by the Secretaría de Educación Pública , via PIFI 2009 and by the Programa de Apoyo a la Reincorporación de Exbecados PROMEP 2009 , key PROMEP UAGUER-EXB-096 . During our study Adolfo Román-Román was a grant recipient from the Universidad Autónoma de Guerrero, México , and Silvia Giono-Cerezo was a grant recipient from the CONACyT, EDI, Cofaa, México .
PY - 2013/3
Y1 - 2013/3
N2 - Introduction: Helicobacter pylori adheres to various components of the human saliva. Therefore, the objective of this research was to simultaneously detect H. pylori in saliva and in gastric biopsy, and to determine the agreement between the vacA genotypes in both saliva and gastric biopsy. Materials and methods: A total of 162 patients with chronic gastritis and 34 with gastric ulcer were studied, and saliva and biopsy samples were collected from each patient. H. pylori DNA was detected by conventional PCR and nested PCR was used for vacA genotyping. Results: In 24% of the patients (47/196) H. pylori DNA was found in saliva and in biopsy; 52.5% (103/196) were salivanegative/ biopsypositive and 6.6% (13/196) were salivapositive/ biopsynegative. In either or both H. pylori vacAs1m1 or s1m2 genotypes were detected in saliva in 41.5% of the patients with chronic gastritis. Forty-seven percent had >1 genotype, and the s1m1/s1m2 combination was found in 36% of them. H. pylori vacAs1m1 and s1m2 were also found in the saliva and biopsy of patients with gastric ulcer. The genotypes found in saliva and biopsy of the same patient had 51.1% agreement. In 27.6% of the 47 patients salivapositive/biopsypositive two genotypes were found in saliva, and one or both in the stomach. Conclusions: The s1m1/s1m2 genotypes, alone or together, are found simultaneously in saliva and gastric biopsy of the same patient. These results suggest that H. pylori reaches the oral cavity by various ways, and that saliva can be the transmitting and re-infecting vector.
AB - Introduction: Helicobacter pylori adheres to various components of the human saliva. Therefore, the objective of this research was to simultaneously detect H. pylori in saliva and in gastric biopsy, and to determine the agreement between the vacA genotypes in both saliva and gastric biopsy. Materials and methods: A total of 162 patients with chronic gastritis and 34 with gastric ulcer were studied, and saliva and biopsy samples were collected from each patient. H. pylori DNA was detected by conventional PCR and nested PCR was used for vacA genotyping. Results: In 24% of the patients (47/196) H. pylori DNA was found in saliva and in biopsy; 52.5% (103/196) were salivanegative/ biopsypositive and 6.6% (13/196) were salivapositive/ biopsynegative. In either or both H. pylori vacAs1m1 or s1m2 genotypes were detected in saliva in 41.5% of the patients with chronic gastritis. Forty-seven percent had >1 genotype, and the s1m1/s1m2 combination was found in 36% of them. H. pylori vacAs1m1 and s1m2 were also found in the saliva and biopsy of patients with gastric ulcer. The genotypes found in saliva and biopsy of the same patient had 51.1% agreement. In 27.6% of the 47 patients salivapositive/biopsypositive two genotypes were found in saliva, and one or both in the stomach. Conclusions: The s1m1/s1m2 genotypes, alone or together, are found simultaneously in saliva and gastric biopsy of the same patient. These results suggest that H. pylori reaches the oral cavity by various ways, and that saliva can be the transmitting and re-infecting vector.
KW - Gastric ulcer
KW - Gastritis
KW - Helicobacter pylori
KW - Saliva
KW - Stomach
KW - vacA genotypes
UR - http://www.scopus.com/inward/record.url?scp=84875219414&partnerID=8YFLogxK
U2 - 10.1016/j.eimc.2012.09.002
DO - 10.1016/j.eimc.2012.09.002
M3 - Artículo
SN - 0213-005X
VL - 31
SP - 130
EP - 135
JO - Enfermedades Infecciosas y Microbiologia Clinica
JF - Enfermedades Infecciosas y Microbiologia Clinica
IS - 3
ER -