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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Sociedad Médica de Santiago
2004
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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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