Relación de la genotipificación de Helicobacter pylori con la forma e intensidad de la gastritis en población adulta portadora de patología gástrica benigna

Background: The damaging capacity of Helicobacter pylori is variable and depends, in part, on its genetic polymorphism. Aim: To study H pylori genes vacA, cagA and iceA and the relationship of these genotypes with the features of acute damage in chronic gastritis. Material and methods: Gastric endos...

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Autores principales: Araya O,Juan Carlos, Anabalón R,Leonardo, Roa E,Iván, Bravo E,María, Villaseca H,Miguel Ángel, Guzmán G,Pablo, Roa S,Juan Carlos
Lenguaje:Spanish / Castilian
Publicado: Sociedad Médica de Santiago 2004
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Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872004001100002
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spelling oai:scielo:S0034-988720040011000022005-01-12Relación de la genotipificación de Helicobacter pylori con la forma e intensidad de la gastritis en población adulta portadora de patología gástrica benignaAraya O,Juan CarlosAnabalón R,LeonardoRoa E,IvánBravo E,MaríaVillaseca H,Miguel ÁngelGuzmán G,PabloRoa S,Juan Carlos Gastritis Genes bacterial Helicobacter pylori Background: The damaging capacity of Helicobacter pylori is variable and depends, in part, on its genetic polymorphism. Aim: To study H pylori genes vacA, cagA and iceA and the relationship of these genotypes with the features of acute damage in chronic gastritis. Material and methods: Gastric endoscopic biopsies were obtained in 75 adults for pathological study and genetic typification of H pylori by specific PCR. Results: In only 64 cases, complete information was available. In 53 of these, there was H pylori infection demonstrated by PCR. Twenty one percent had infection by two or more H pylori strains, vacA gene had genotypes s2/m2, s1/m1 and s1/m2 in 36, 25 and 8% of cases respectively, cagA gene was present in 49% of infected patients. iceA gene had genotypes iceA 1 ad iceA 2 in 15 and 60% of patients respectively. The presence of cagA or alleles s1/m1 and s1/m2 of vacA gene was directly correlated with polymorphonuclear infiltration and the severity of epithelial damage. The genotype s2/m2 of vacA gene was significantly associated with a milder or absent mucosal damage. No association was found between iceA alleles and the pathological features of gastritis. Conclusions: Alleles of vacA and cagA genes of H pilory are associated with the severity of gastric mucosal damageinfo:eu-repo/semantics/openAccessSociedad Médica de SantiagoRevista médica de Chile v.132 n.11 20042004-11-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872004001100002es10.4067/S0034-98872004001100002
institution Scielo Chile
collection Scielo Chile
language Spanish / Castilian
topic Gastritis
Genes
bacterial
Helicobacter pylori
spellingShingle Gastritis
Genes
bacterial
Helicobacter pylori
Araya O,Juan Carlos
Anabalón R,Leonardo
Roa E,Iván
Bravo E,María
Villaseca H,Miguel Ángel
Guzmán G,Pablo
Roa S,Juan Carlos
Relación de la genotipificación de Helicobacter pylori con la forma e intensidad de la gastritis en población adulta portadora de patología gástrica benigna
description Background: The damaging capacity of Helicobacter pylori is variable and depends, in part, on its genetic polymorphism. Aim: To study H pylori genes vacA, cagA and iceA and the relationship of these genotypes with the features of acute damage in chronic gastritis. Material and methods: Gastric endoscopic biopsies were obtained in 75 adults for pathological study and genetic typification of H pylori by specific PCR. Results: In only 64 cases, complete information was available. In 53 of these, there was H pylori infection demonstrated by PCR. Twenty one percent had infection by two or more H pylori strains, vacA gene had genotypes s2/m2, s1/m1 and s1/m2 in 36, 25 and 8% of cases respectively, cagA gene was present in 49% of infected patients. iceA gene had genotypes iceA 1 ad iceA 2 in 15 and 60% of patients respectively. The presence of cagA or alleles s1/m1 and s1/m2 of vacA gene was directly correlated with polymorphonuclear infiltration and the severity of epithelial damage. The genotype s2/m2 of vacA gene was significantly associated with a milder or absent mucosal damage. No association was found between iceA alleles and the pathological features of gastritis. Conclusions: Alleles of vacA and cagA genes of H pilory are associated with the severity of gastric mucosal damage
author Araya O,Juan Carlos
Anabalón R,Leonardo
Roa E,Iván
Bravo E,María
Villaseca H,Miguel Ángel
Guzmán G,Pablo
Roa S,Juan Carlos
author_facet Araya O,Juan Carlos
Anabalón R,Leonardo
Roa E,Iván
Bravo E,María
Villaseca H,Miguel Ángel
Guzmán G,Pablo
Roa S,Juan Carlos
author_sort Araya O,Juan Carlos
title Relación de la genotipificación de Helicobacter pylori con la forma e intensidad de la gastritis en población adulta portadora de patología gástrica benigna
title_short Relación de la genotipificación de Helicobacter pylori con la forma e intensidad de la gastritis en población adulta portadora de patología gástrica benigna
title_full Relación de la genotipificación de Helicobacter pylori con la forma e intensidad de la gastritis en población adulta portadora de patología gástrica benigna
title_fullStr Relación de la genotipificación de Helicobacter pylori con la forma e intensidad de la gastritis en población adulta portadora de patología gástrica benigna
title_full_unstemmed Relación de la genotipificación de Helicobacter pylori con la forma e intensidad de la gastritis en población adulta portadora de patología gástrica benigna
title_sort relación de la genotipificación de helicobacter pylori con la forma e intensidad de la gastritis en población adulta portadora de patología gástrica benigna
publisher Sociedad Médica de Santiago
publishDate 2004
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872004001100002
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