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Leptin and soluble leptin receptor in risk of colorectal cancer in the European prospective investigation into Cancer and nutrition cohort
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2012 (Engelska)Ingår i: Cancer Research, ISSN 0008-5472, E-ISSN 1538-7445, Vol. 72, nr 20, s. 5328-5337Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Leptin, a peptide hormone produced primarily by the adipocytes, is hypothesized to play a role in the pathogenesis of colorectal cancer (CRC). Soluble leptin receptor (sOB-R) may regulate leptin's physiologic functions; however its relation to CRC risk is unknown. This study explored the association of leptin and sOB-R with risk of CRC in a prospective nested case-control study within the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort. A total of 1,129 incident CRC cases (713 colon, 416 rectal) were matched within risk sets to 1,129 controls. Conditional logistic regression was used to calculate relative risks (RR) and 95% confidence intervals (CI). After multivariable adjustment including body mass index (BMI), waist circumference, and baseline leptin concentrations, sOB-R was strongly inversely associated with CRC (RR comparing the highest quintile vs. the lowest, 0.55; 95% CI, 0.40-0.76; P-trend = 0.0004) and colon cancer (RR, 0.42; 95% CI, 0.28-0.63, P-trend = 0.0001); whereas no association was seen for rectal cancer (RR adjusted for BMI and waist circumference, 0.83; 95% CI, 0.48-1.44, P-trend = 0.38). In contrast, leptin was not associated with risk of CRC (RR adjusted for BMI and waist circumference, 0.85; 95% CI, 0.56-1.29, P-trend = 0.23). Additional adjustments for circulating metabolic biomarkers did not attenuate these results. These novel findings suggest a strong inverse association between circulating sOB-R and CRC risk, independent of obesity measures, leptin concentrations, and other metabolic biomarkers. Further research is needed to confirm the potentially important role of sOB-R in CRC pathogenesis. Cancer Res; 72(20); 5328-37. (C) 2012 AACR.

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Philadelphia, USA: American Association for Cancer Research , 2012. Vol. 72, nr 20, s. 5328-5337
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Cancer och onkologi
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URN: urn:nbn:se:umu:diva-61772DOI: 10.1158/0008-5472.CAN-12-0465ISI: 000309972700022OAI: oai:DiVA.org:umu-61772DiVA, id: diva2:572452
Tillgänglig från: 2012-11-27 Skapad: 2012-11-26 Senast uppdaterad: 2018-06-08Bibliografiskt granskad

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Söderberg, StefanPalmqvist, Richard

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