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Träfflista för sökning "WFRF:(Manjer Jonas) ;pers:(Larrañaga Nerea);pers:(Tjonneland Anne);pers:(Schulz Mandy);pers:(Martinez Garcia Carmen)"

Sökning: WFRF:(Manjer Jonas) > Larrañaga Nerea > Tjonneland Anne > Schulz Mandy > Martinez Garcia Carmen

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1.
  • Friedenreich, Christine, et al. (författare)
  • Physical activity and risk of endometrial cancer: The European prospective investigation into cancer and nutrition
  • 2007
  • Ingår i: International Journal of Cancer. - Wiley-Liss. - 0020-7136. ; 121:2, s. 347-355
  • Tidskriftsartikel (refereegranskat)abstract
    • The etiologic role of physical activity in endometrial cancer risk remains unclear given the few epidemiologic studies that have been conducted. To investigate this relation more fully, an analysis was,undertaken in the European prospective investigation into cancer and nutrition (EPIC). During an average 6.6 years of follow-up, 689 incident endometrial cancer cases were identified from an analytic cohort within EPIC of 253,023 women. Cox proportional hazards models were used to estimate the associations between type of activity (total, occupational, household, recreational) and endometrial cancer risk. For total activity, women in the highest compared with the lowest quartile of activity had a risk of 0.88 (95% confidence interval (95% CI = 0.61-1.27). No clear associations between each type of activity and endometrial cancer risk were found for the total study population combined. Associations were more evident in the stratified results, with premenopausal women who were active versus inactive experiencing a risk of 0.66 (95% CI = 0.38-1.14) overall. Among premenopausal women, for household and recreational activities the risk estimates in the highest as compared with the lowest quartiles were, respectively, 0.48 (95% CI = 0.23-0.99) and 0.78 (95% CI = 0.44-1.39). No effect modification by body mass index, hormone replacement therapy, oral contraceptive use or energy intake was found. This study provides no evidence of a protective effect of increased physical activity in endometrial cancer risk in all women but some support for a benefit among premenopausal women. The relative risk reductions are most apparent for household activities.
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2.
  • Rinaldi, Sabina, et al. (författare)
  • Endogenous androgens and risk of epithelial ovarian cancer
  • 2007
  • Ingår i: Cancer Epidemiol Biomarkers Prev. - 1055-9965. ; 16:1, s. 23-9
  • Tidskriftsartikel (refereegranskat)abstract
    • Few epidemiologic studies have examined the hypothesis that circulating androgens are involved in the development of ovarian cancer. We investigated the association between prediagnostic serum levels of androgens and sex hormone–binding globulin (SHBG) and ovarian cancer risk in a case-control study nested within the European Prospective Investigation into Cancer and Nutrition cohort. One hundred and ninety-two ovarian cancer cases and 346 matched controls not using exogenous hormones at baseline blood donation were eligible for the study. Serum levels of testosterone, androstenedione, dehydroepiandrosterone sulfate, and SHBG were measured by direct immunoassays. Free testosterone (fT) was calculated according to mass action laws. Multivariate conditional logistic regression was used to estimate odds ratios adjusted for possible confounders. Overall, there was no association between serum concentrations of androgens or SHBG and ovarian cancer risk. In postmenopausal women, fT concentrations were inversely related to risk highest versus lowest tertile odds ratio 0.45 (0.24-0.86); Ptrend = 0.01. Among women diagnosed before the age of 55 years, there was a negative association with SHBG and a positive association with fT and ovarian cancer risk, although these associations were not statistically significant. The present study suggests that circulating androgens and SHBG levels are not strongly associated with ovarian cancer risk, although levels of fT may be associated with an increased risk among women diagnosed at relatively young age. The heterogeneity of results on the associations of fT with ovarian cancer risk in postmenopausal women deserves further investigation.
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