Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/3074
Título: The D1822V APC polymorphism interacts with fat, calcium, and fiber intakes in modulating the risk of colorectal cancer in Portuguese persons
Autor: Guerreiro, Catarina Sousa
Cravo, Marília
Brito, Miguel
Vidal, Pedro L.
Fidalgo, Paulo O.
Leitão, Carlos Nobre
Palavras-chave: Calcium, Dietary
Case-control studies
Colorectal neoplasms
Dietary fats
Dietary fiber
Energy intake
Polymorphism, Genetic
Data: Jun-2007
Citação: Guerreiro CS, Cravo ML, Brito M, Vidal PM, Fidalgo PO, Leitão CN. The D1822V APC polymorphism interacts with fat, calcium, and fiber intakes in modulating the risk of colorectal cancer in Portuguese persons. Am J Clin Nutr. 2007;85(6):1592-7.
Resumo: Background - Both genetic and environmental factors affect the risk of colorectal cancer (CRC). Objective - We aimed to examine the interaction between the D1822V polymorphism of the APC gene and dietary intake in persons with CRC. Design - Persons with CRC (n = 196) and 200 healthy volunteers, matched for age and sex in a case-control study, were evaluated with respect to nutritional status and lifestyle factors and for the D1822V polymorphism. Results - No significant differences were observed in energy and macronutrient intakes. Cases had significantly (P < 0.05) lower intakes of carotenes, vitamins C and E, folate, and calcium than did controls. Fiber intake was significantly (P = 0.004) lower in cases than in controls, whereas alcohol consumption was associated with a 2-fold risk of CRC. In addition, cases were significantly (P = 0.001) more likely than were controls to be sedentary. The homozygous variant for the APC gene (VV) was found in 4.6% of cases and in 3.5% of controls. Examination of the potential interactions between diet and genotype found that a high cholesterol intake was associated with a greater risk of colorectal cancer only in noncarriers (DD) of the D1822V APC allele (odds ratio: 1.66; 95% CI: 1.00, 2.76). In contrast, high fiber and calcium intakes were more markedly associated with a lower risk of CRC in patients carrying the polymorphic allele (DV/VV) (odds ratio: 0.50; 95% CI: 0.27, 0.94 for fiber; odds ratio: 0.51; 95% CI: 0.28, 0.93 for calcium) than in those without that allele. Conclusion - These results suggest a significant interaction between the D1822V polymorphism and the dietary intakes of cholesterol, calcium, and fiber for CRC risk.
Peer review: yes
URI: http://hdl.handle.net/10400.21/3074
ISSN: 1938-3207
Versão do Editor: http://ajcn.nutrition.org/content/85/6/1592.full.pdf+html
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