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Effect of smoking on failure of H. pylori therapy and gastric histology in a high gastric cancer risk area of Colombia / Efecto del tabaquismo en la falla al tratamiento anti-H. pylori y en la histología gástrica en una zona de alto riesgo de cáncer gástrico en Colombia
Camargo, M. Constanza; Piazuelo, M. Blanca; Mera, Robertino M; Fontham, Elizabeth T. H; Delgado, Alberto G; Yepez, M Clara; Ceron, Cristina; Bravo, Luis E; Bravo, Juan C; Correa, Pelayo.
Afiliação
  • Camargo, M. Constanza; Vanderbilt University. School of Medicine. Department of Medicine. Nashville. US
  • Piazuelo, M. Blanca; Vanderbilt University. School of Medicine. Department of Medicine. Nashville. US
  • Mera, Robertino M; Vanderbilt University. School of Medicine. Department of Medicine. Nashville. US
  • Fontham, Elizabeth T. H; Universidad de Nariño. Centro de Estudios en Salud. Pasto. CO
  • Delgado, Alberto G; Vanderbilt University. School of Medicine. Department of Medicine. Nashville. US
  • Yepez, M Clara; Louisiana State University. Health Sciences Center. School of Public Health. New Orleans. US
  • Ceron, Cristina; Louisiana State University. Health Sciences Center. School of Public Health. New Orleans. US
  • Bravo, Luis E; Universidad del Valle. School of Medicine. Department of Pathology. Cali. CO
  • Bravo, Juan C; Universidad del Valle. School of Medicine. Department of Pathology. Cali. CO
  • Correa, Pelayo; Vanderbilt University. School of Medicine. Department of Medicine. Nashville. US
Acta gastroenterol. latinoam ; Acta gastroenterol. latinoam;37(4): 238-245, 2007. tab
Article em En | LILACS | ID: lil-490741
Biblioteca responsável: BR1.1
ABSTRACT
It has been proposed that eradication of Helicobacter pylori infection is a sound strategy for gastric cancer prevention. Several factors including smoking have been associated to treatment failure rates. This study aimed to evaluate the smoking effect on the efficacy of H. pylori therapy, as well as on the histological parameters in the gastric mucosa from subjects from a high gastric cancer risk area. Two-hundred-sixty-four Colombian subjects with gastric precancerous lesions who participated in a chemoprevention trial, received anti- H. pylori treatment at baseline and had data recorded on cigarette use, were included in this study. A detailed histopathological assessment of the gastric mucosa was performed in biopsies taken before any intervention. H. pylori eradication was assessed in gastric biopsies at 36 months post-treatment. The overall eradication rate was 52.3%; rates of 41.3% and 57.1% were observed for active-smokers and non-smokers, respectively. Multivariate logistic regression analysis showed that smokers had a 2-fold higher probability of failure in Helicobacter pylori eradication than non-smokers (OR 2.0; 95% CI 1.01-3.95). At baseline, activesmokers had a higher score of intestinal metaplasia compared to non-smokers. In the corpus mucosa, active-smokers showed lower scores of H. pylori density, total inflammation, neutrophil infiltration, and mucus depletion than non-smokers. In the antrum, no significant differences were observed between active-smokers and non-smokers. In summary, in patients who smoked, H. pylori treatment was less effective. Smoking cessation may benefit H. pylori eradication rates.
RESUMEN
La erradicación del Helicobacter pylori ha sido propuesta como medida promisoria en la prevención del cáncer gástrico. Varios factores, incluyendo el tabaquismo, se asocian con la falla del tratamiento. El objetivo de este estudio fue evaluar el efecto del tabaquismo en la eficacia del tratamiento anti-H. pylori y en la histología gástrica en residentes de una zona de alto riesgo de cáncer gástrico. Este estudio incluyó 264 sujetos colombianos con lesiones gástricas preneoplásicas que participaron en un estudio de quimioprevención, recibieron tratamiento anti-H. pylori al ingreso, y proveyeron información sobre tabaquismo. Se realizó un detallado análisis histopatológico en las biopsias colectadas al ingreso. La erradicación de la infección fue evaluada en las biopsias gástricas a los 36 meses post-tratamiento. El porcentaje general de erradicación fue de 52.3%, con proporciones de 41.3% y 57.1% en fumadores activos y no fumadores, respectivamente. El análisis de regresión logística múltiple mostró que el riesgo de presentar falla al tratamiento fue doble en fumadores en comparación con los no fumadores (OR 2.0; 95% CI 1.01-3.95). Los fumadores presentaron un mayor índice de metaplasia intestinal comparado con los no fumadores. En la mucosa del cuerpo gástrico los fumadores mostraron menores índices de colonización por H. pylori, inflamación total, infiltración de neutrófilos y depleción de moco que los no fumadores. En el antro no se observaron diferencias significacomtivas entre ambos grupos. En conclusión, el tratamiento anti-H. pylori fue menos efectivo en sujetos fumadores. La cesación del consumo de tabaco puede beneficiar las tasas de erradicación del H. pylori.
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Texto completo: 1 Coleções: 01-internacional Base de dados: LILACS Tipo de estudo: Diagnostic_studies / Etiology_studies / Observational_studies / Prognostic_studies / Risk_factors_studies Limite: Female / Humans / Male País/Região como assunto: America do sul / Colombia Idioma: En Ano de publicação: 2007 Tipo de documento: Article
Texto completo: 1 Coleções: 01-internacional Base de dados: LILACS Tipo de estudo: Diagnostic_studies / Etiology_studies / Observational_studies / Prognostic_studies / Risk_factors_studies Limite: Female / Humans / Male País/Região como assunto: America do sul / Colombia Idioma: En Ano de publicação: 2007 Tipo de documento: Article