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Iron Biomarkers in Plasma, HFE Genotypes, and the Risk for Colorectal Cancer in a Prospective Setting
Umeå universitet, Medicinska fakulteten, Institutionen för medicinsk biovetenskap, Klinisk kemi.ORCID-id: 0000-0003-2844-1310
Umeå universitet, Medicinska fakulteten, Institutionen för medicinsk biovetenskap, Klinisk kemi.
Umeå universitet, Medicinska fakulteten, Institutionen för medicinsk biovetenskap, Patologi.ORCID-id: 0000-0002-9933-2843
Umeå universitet, Medicinska fakulteten, Institutionen för medicinsk biovetenskap, Patologi.
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2012 (Engelska)Ingår i: Diseases of the Colon & Rectum, ISSN 0012-3706, E-ISSN 1530-0358, Vol. 55, nr 3, s. 337-344Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

BACKGROUND: High iron levels can increase the formation of noxious oxygen radicals, which are thought to promote carcinogenesis. OBJECTIVE: The aim of this prospective study was to determine whether iron biomarkers and HFE genotypes, which influence iron regulation, constitute risk factors for colorectal cancer. DESIGN: This is a prospective nested case-referent study. SETTINGS: The study was performed within the population-based Northern Sweden Health and Disease Study. PATIENTS: The study included 226 cases of colorectal cancer and 437 matched referents. MAIN OUTCOME MEASURES: Conditional regression analysis was performed. Adjustments for smoking, smoking and BMI, and HFE C282Y and H63D were performed. RESULTS: The highest quintile of total iron-binding capacity showed significantly higher risk for colorectal cancer, unadjusted OR 2.35 (95% CI 1.38-4.02). When stratified by sex, the findings were only present in women (OR 3.34 (95% CI 1.59-7.02)). Ferritin was associated with reduced risk throughout quintiles 2 to 5 both in univariate and multivariate models. LIMITATIONS: Colorectal cancer may influence iron markers because of occult bleeding. Homozygotes for HFE C282Y were too few to make conclusions for this group. The relatively short follow-up time might be insufficient to detect risk of iron biomarkers. CONCLUSIONS: High iron levels do not increase the risk of colorectal cancer. HFE genotypes influencing iron uptake had no effect on colorectal cancer risk.

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2012. Vol. 55, nr 3, s. 337-344
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URN: urn:nbn:se:umu:diva-53248DOI: 10.1097/DCR.0b013e318241199eISI: 000300636200018OAI: oai:DiVA.org:umu-53248DiVA, id: diva2:511885
Tillgänglig från: 2012-03-23 Skapad: 2012-03-19 Senast uppdaterad: 2018-06-08Bibliografiskt granskad

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Ekblom, KimMarklund, Stefan L.Palmqvist, RichardVan Guelpen, BethanyHallmans, GöranWeinehall, LarsHultdin, Johan

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Ekblom, KimMarklund, Stefan L.Palmqvist, RichardVan Guelpen, BethanyHallmans, GöranWeinehall, LarsHultdin, Johan
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Klinisk kemiPatologiNäringsforskningEpidemiologi och global hälsa
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