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Circulating isoflavone and lignan concentrations and prostate cancer risk: a meta-analysis of individual participant data from seven prospective studies including 2828 cases and 5593 controls
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2018 (engelsk)Inngår i: International Journal of Cancer, ISSN 0020-7136, E-ISSN 1097-0215, Vol. 143, nr 11, s. 2677-2686Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Phytoestrogens may influence prostate cancer development. This study aimed to examine the association between pre-diagnostic circulating concentrations of isoflavones (genistein, daidzein, equol) and lignans (enterolactone and enterodiol) and the risk of prostate cancer. Individual participant data were available from seven prospective studies (two studies from Japan with 241 cases and 503 controls and five studies from Europe with 2,828 cases and 5,593 controls). Because of the large difference in circulating isoflavone concentrations between Japan and Europe, analyses of the associations of isoflavone concentrations and prostate cancer risk were evaluated separately. Prostate cancer risk by study-specific fourths of circulating concentrations of each phytoestrogen was estimated using multivariable-adjusted conditional logistic regression. In men from Japan, those with high compared to low circulating equol concentrations had a lower risk of prostate cancer (multivariable-adjusted OR for upper quartile [Q4] vs Q1=0.61, 95% confidence interval [CI]=0.39-0.97), although there was no significant trend (OR per 75 percentile increase=0.69, 95 CI=0.46-1.05, Ptrend =0.085); Genistein and daidzein concentrations were not significantly associated with risk (ORs for Q4 vs Q1=0.70, 0.45-1.10, and 0.71, 0.45-1.12, respectively). In men from Europe, circulating concentrations of genistein, daidzein and equol were not associated with risk. Circulating lignan concentrations were not associated with the risk of prostate cancer, overall or by disease aggressiveness or time to diagnosis. There was no strong evidence that pre-diagnostic circulating concentrations of isoflavones or lignans are associated with prostate cancer risk, although further research is warranted in populations where isoflavone intakes are high.

sted, utgiver, år, opplag, sider
John Wiley & Sons, 2018. Vol. 143, nr 11, s. 2677-2686
Emneord [en]
isoflavones, lignans, phytoestrogens, pooled analysis, prostate cancer risk
HSV kategori
Identifikatorer
URN: urn:nbn:se:umu:diva-150143DOI: 10.1002/ijc.31640ISI: 000450846900006PubMedID: 29971774Scopus ID: 2-s2.0-85054090054OAI: oai:DiVA.org:umu-150143DiVA, id: diva2:1232185
Forskningsfinansiär
Swedish Cancer SocietyTilgjengelig fra: 2018-07-10 Laget: 2018-07-10 Sist oppdatert: 2018-12-19bibliografisk kontrollert

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Johansson, AndersLandberg, RikardNilsson, Lena Maria

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