Bibliographic citations
Flores, G., (2017). Asociación entre los patrones EPIYA de cepas de Helicobacter pylori y alteraciones patológicas de la mucosa gástrica de pacientes dispépticos atendidos en hospitales de 4 ciudades del norte del Perú [Tesis, Universidad Privada Antenor Orrego - UPAO]. https://hdl.handle.net/20.500.12759/3752
Flores, G., Asociación entre los patrones EPIYA de cepas de Helicobacter pylori y alteraciones patológicas de la mucosa gástrica de pacientes dispépticos atendidos en hospitales de 4 ciudades del norte del Perú [Tesis]. : Universidad Privada Antenor Orrego - UPAO; 2017. https://hdl.handle.net/20.500.12759/3752
@mastersthesis{renati/377207,
title = "Asociación entre los patrones EPIYA de cepas de Helicobacter pylori y alteraciones patológicas de la mucosa gástrica de pacientes dispépticos atendidos en hospitales de 4 ciudades del norte del Perú",
author = "Flores Trujillo, Gustavo Adolfo",
publisher = "Universidad Privada Antenor Orrego - UPAO",
year = "2017"
}
Objective To determine the association between the type of EPIYA patterns in Helicobacter pylori CagA + strains isolated from dyspeptic patients from hospitals in 4 cities in northern Peru and atrophy, metaplasia, or dysplasia of the gastric mucosa. Material and methods. A cross - sectional observational analytic study was carried out, in which 164 isolates of H. pylori were evaluated from cultures of gastric biopsies of dyspeptic patients. The cagA gene of extracted genomic DNA was amplified using polymerase chain reaction (PCR) to determine the type of EPIYA pattern. In parallel, the pathological analysis of the gastric biopsies was performed to observe atrophy, metaplasia or dysplasia of the gastric mucosa. Results. Of the 164 isolates of H. pylori obtained, it was found that 91.5% have the cagA gene in their genome. We found 13 types of EPIYA pattern: A, AABBCC, AABBC, AB, ABBBCC, ABBCCC, ABC, ABCC, ABCCC, AC, ACC, BC, BCC; the most frequent pattern was ABC. This pattern exists more frequently in biopsies with atrophy and metaplasia. There is no statistical association between the type of EPIYA pattern found in the isolated H. pylori CagA+ strains and pathological alterations tested, except between atrophy and type of EPIYA pattern (p=0.018) in samples obtained in the city of Cajamarca. Conclusions. A diversity of EPIYA patterns was identified for the first time in the strains of H. pylori CagA + isolated from dyspeptic patients from 4 cities in northern Peru; these patterns do not have a statistical association with atrophy, metaplasia and dysplasia.
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