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Sökning: WFRF:(Weijenberg MP)

  • Resultat 1-6 av 6
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1.
  • Farvid, Maryam S, et al. (författare)
  • Consumption of red and processed meat and breast cancer incidence : A systematic review and meta-analysis of prospective studies.
  • 2018
  • Ingår i: International Journal of Cancer. - 0020-7136 .- 1097-0215. ; 143:11, s. 2787-2799
  • Tidskriftsartikel (refereegranskat)abstract
    • = 44.4%). In addition, we identified two nested case-control studies evaluating the association between red meat and breast cancer stratified by N-acetyltransferase 2 acetylator genotype. We did not observe any association among those with either fast (per 25 g/day pooled odds ratio (OR), 1.18; 95%CI, 0.93-1.50) or slow N-acetyltransferase 2 acetylators (per 25 g/day pooled OR, 0.99; 95%CI, 0.91-1.08). In the prospective observational studies, high processed meat consumption was associated with increased breast cancer risk.
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2.
  • Kim, Dong-Hyun, et al. (författare)
  • Pooled analyses of 13 prospective cohort studies on folate intake and colon cancer
  • 2010
  • Ingår i: Cancer Causes and Control. - : SPRINGER. - 0957-5243 .- 1573-7225. ; 21:11, s. 1919-1930
  • Tidskriftsartikel (refereegranskat)abstract
    • Studies of folate intake and colorectal cancer risk have been inconsistent. We examined the relation with colon cancer risk in a series of 13 prospective studies. Study- and sex-specific relative risks (RRs) were estimated from the primary data using Cox proportional hazards models and then pooled using a random-effects model. Among 725,134 participants, 5,720 incident colon cancers were diagnosed during follow-up. The pooled multivariate RRs (95% confidence interval [CI]) comparing the highest vs. lowest quintile of intake were 0.92 (95% CI 0.84-1.00, p-value, test for between-studies heterogeneity = 0.85) for dietary folate and 0.85 (95% CI 0.77-0.95, p-value, test for between-studies heterogeneity = 0.42) for total folate. Results for total folate intake were similar in analyses using absolute intake cutpoints (pooled multivariate RR = 0.87, 95% CI 0.78-0.98, comparing a parts per thousand yen560 mcg/days vs. < 240 mcg/days, p-value, test for trend = 0.009). When analyzed as a continuous variable, a 2% risk reduction (95% CI 0-3%) was estimated for every 100 mu g/day increase in total folate intake. These data support the hypothesis that higher folate intake is modestly associated with reduced risk of colon cancer.
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3.
  • van Roekel, Eline H., et al. (författare)
  • Circulating metabolites associated with alcohol intake in the european prospective investigation into cancer and nutrition cohort
  • 2018
  • Ingår i: Nutrients. - : MDPI AG. - 2072-6643. ; 10:5
  • Tidskriftsartikel (refereegranskat)abstract
    • Identifying the metabolites associated with alcohol consumption may provide insights into the metabolic pathways through which alcohol may affect human health. We studied associations of alcohol consumption with circulating concentrations of 123 metabolites among 2974 healthy participants from the European Prospective Investigation into Cancer and Nutrition (EPIC) study. Alcohol consumption at recruitment was self-reported through dietary questionnaires. Metabolite concentrations were measured by tandem mass spectrometry (BIOCRATES AbsoluteIDQTMp180 kit). Data were randomly divided into discovery (2/3) and replication (1/3) sets. Multivariable linear regression models were used to evaluate confounder-adjusted associations of alcohol consumption withmetabolite concentrations. Metabolites significantly related to alcohol intake in the discovery set (FDR q-value < 0.05) were further tested in the replication set (Bonferroni-corrected p-value < 0.05). Of the 72metabolites significantly related to alcohol intake in the discovery set, 34 were also significant in the replication analysis, including three acylcarnitines, the amino acid citrulline, four lysophosphatidylcholines, 13 diacylphosphatidylcholines, seven acyl-alkylphosphatidylcholines, and six sphingomyelins. Our results confirmed earlier findings that alcohol consumption was associated with several lipid metabolites, and possibly also with specific acylcarnitines and amino acids. This provides further leads for future research studies aiming at elucidating the mechanisms underlying the effects of alcohol in relation to morbid conditions.
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5.
  • Smits, KM, et al. (författare)
  • Association of metabolic gene polymorphisms with tobacco consumption in healthy controls
  • 2004
  • Ingår i: International Journal of Cancer. - : John Wiley and Sons. - 0020-7136. ; 110:2, s. 266-270
  • Tidskriftsartikel (refereegranskat)abstract
    • Polymorphisms in genes that encode for metabolic enzymes have been associated with variations in enzyme activity between individuals. Such variations could be associated with differences in individual exposure to carcinogens that are metabolized by these genes. In this study, we examine the association between polymorphisms in several metabolic genes and the consumption of tobacco in a large sample of healthy individuals. The database of the International Collaborative Study on Genetic Susceptibility to Environmental Carcinogens was used. All the individuals who were controls from the case-control studies included in the data set with information on smoking habits and on genetic polymorphisms were selected (n = 20,938). Sufficient information was available on the following genes that are involved in the metabolism of tobacco smoke constituents: CYPIAI, GSTMI, GSTTI, NAT2 and GSTPI. None of the tested genes was clearly associated with smoking behavior. Information on smoking dose, available for a subset of subjects, showed no effect of metabolic gene polymorphisms on the amount of smoking. No association between polymorphisms in the genes studied and tobacco consumption was observed; therefore, no effect of these genes on smoking behavior should be expected.
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6.
  • Smits, KM, et al. (författare)
  • Interaction between smoking, GSTM1 deletion and colorectal cancer: results from the GSEC study
  • 2003
  • Ingår i: Biomarkers. - : Taylor & Francis. - 1366-5804. ; 8:3-4, s. 299-310
  • Tidskriftsartikel (refereegranskat)abstract
    • Cigarette smoking has inconsistently been associated with an increased risk of colorectal cancer. One of the enzymes responsible for the detoxification of the carcinogenic compounds present in tobacco smoke is glutathione S-transferase-mu (GST-mu). The gene that codes for this enzyme is GSTM1. In this study, we evaluated the associations and interaction between GSTM1 deletion, smoking behaviour and the development of colorectal cancer. We performed a pooled analysis within the International Collaborative Study on Genetic Susceptibility to Environmental Carcinogens (GSEC). We selected six studies on colorectal cancer, including 1130 cases and 2519 controls, and restricted our analyses to Caucasians because the number of patients from other races was too limited. In addition we performed a meta-analysis including the studies from the GSEC database and other studies identified on MEDLINE on the same subject. The prevalence of the GSTM1 null genotype was within the range reported in other studies: 51.8% of the cases had the GSTM1 null genotype versus 56.6% of the controls. No significant association between the GSTM1 null genotype and colorectal cancer was found (odds ratio 0.92, 95% confidence interval 0.73-1.14). Our results suggest a possible positive association between lack of the GST-mu enzyme and colorectal cancer for non-smoking women (odds ratio 1.47, 95% confidence interval 0.80-2.70). There was no interaction between the effects of smoking and GSTM1 genotype on colorectal cancer risk in men and women (chi(2) = 0.007, p = 0.97). Our findings do not support an association between the GSTM1 null genotype and colorectal cancer. In addition, we did not find any modification of the smoking-induced colorectal cancer risk by GSTM1 genotype.
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