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Sökning: L773:1021 335X > Kaaks Rudolf

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1.
  • Campa, Daniele, et al. (författare)
  • Genetic variability of the forkhead box O3 and prostate cancer risk in the European Prospective Investigation on Cancer
  • 2011
  • Ingår i: Oncology Reports. - Athen : National Hellenic Research Foundation. - 1021-335X .- 1791-2431. ; 26:4, s. 979-986
  • Tidskriftsartikel (refereegranskat)abstract
    • Forkhead box O3 (FOXO3) has a wide range of functions: it promotes tumor suppression, cell cycle arrest, repair of damaged DNA, detoxification of reactive oxygen species, apoptosis and plays a pivotal role in promoting longevity. FOXO3 is a key downstream target of the PI3K-Akt pathway in response to cellular stimulation by growth factors or insulin and has been proposed as a bridge between ageing and tumor suppression. Three SNPs in the FOXO3 gene (rs3800231, rs9400239 and rs479744) that have been shown to be strongly and consistently associated with longevity, were examined in relation to PC risk in a case control study of 1571 incident PC cases and 1840 controls nested within the European Prospective Investigation into Cancer and Nutrition (EPIC). There was no statistically significant association between the SNPs and PC risk regardless of the model of inheritance (dominant, codominant and recessive). The associations were not modified by disease aggressiveness, circulating levels of steroid sex hormones, or IGFs or BMI. We conclude that polymorphisms in the FOXO3 gene that are associated with longevity are not major risk factors for PC risk, in this population of Caucasian men.
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2.
  • Stattin, Pär, et al. (författare)
  • Plasma leptin and colorectal cancer risk : a prospective study in Northern Sweden.
  • 2003
  • Ingår i: Oncology Reports. - 1021-335X .- 1791-2431. ; 10:6, s. 2015-2021
  • Tidskriftsartikel (refereegranskat)abstract
    • Obesity is associated with an increased risk of colorectal cancer. Circulating levels of leptin are high in obesity and strongly correlated to levels of insulin. Leptin stimulates growth of colon cancer cells. In a nested case-control study, we measured leptin levels in prediagnostic plasma from 75 men and 93 women who were diagnosed with colorectal cancer mean time 3.4 years (SD 2.4) after recruitment and among 327 control subjects. Logistic regression analyses showed increases in colorectal cancer risk in men with increasing levels of leptin, odds ratios (OR) were 1.00 (ref), 0.85 (95% C.I.=0.33-2.23), 1.04 (0.43-2.53), and 2.15 (0.89-5.22), (pfor trend=0.08). There was a distinct threshold between the third and fourth quartile of leptin, and the odds ratio for top quartile vs. three bottom quartiles was 2.28 (1.09-4.76). Adjustment for body mass index and insulin did not affect risk estimates. In separate analysis, odds ratio for top vs. bottom tertile of colon cancer was 1.96 (95% C.I.=0.72-5.29), whereas no increase was seen for rectal cancer. In women, no association between leptin and risk was seen. These data support the hypothesis that leptin is a risk marker for colorectal cancer in men, but not in women.
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