Antioxidant vitamins and risk of gastric cancer: A case-control study in Portugal

• Tipo: Artigo em Revista Científica Internacional
• Data: 2006

Autores

Lunet N (Autor) FMUP; Valbuena, C (Autor) Outra; Carneiro F (Autor) FMUP; Cláudia Lopes (Autor) Outra; Barros H (Autor) FMUP

Revista

Título: Nutrition and Cancer

Vol. 55

Páginas: 71-77

ISSN: 0163-5581

Editora: Taylor & Francis

Indexação

ISI Web of Knowledge - 24 Citações

Scopus - 26 Citações

Outras Informações

ID Authenticus: P-004-QEM

DOI: 10.1207/s15327914nc5501_9

Abstract (EN): We quantified the effect of antioxidant vitamins in gastric cancer risk, taking into account Helicobacter pylori seropositivity and overall fruit and vegetable intake. incident cases were identified in two large hospitals in Porto, Portugal, and controls were randomly sampled among city dwellers. Food intake was assessed with a previously validated semiquantitative food-frequency questionnaire. A commercially available chromatographic immunoassay was used for the detection of immunoglobulin G antibodies. Complete questionnaire information and serum samples were available for 233 cases and 311 controls. Compared with subjects in the lowest tertile of dietary intake, the odds ratios (ORs) for those in the highest were 0.85 (95% confidence interval, CI = 0.45-1.60) for vitamin C, 1.04 (95% CI = 0.60-1.80) for vitamin E, and]. 33 (95% CI = 0.77-2.30)for provitamin A carotenoids after further adjusting for fruit and vegetable consumption. Fruit and vegetables remained an independent protective factor (OR = 0.45; 95% CI = 0.23-0.89) after further adjustment for the intake of antioxidant vitamins. H. pylori status had no significant interaction with dietary items. Factors other than H. pylori infection and intake of vitamin C and provitamin A carotenoids seem to account for the inverse association between fruit and vegetable consumption and gastric cancer.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7