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A prospective study of soluble receptor for advanced glycation end-products and colorectal cancer risk in postmenopausal women.
Chen L, Duan Z, Tinker L, Sangi-Haghpeykar H, Strickler H, Ho GY, Gunter MJ, Rohan T, Logsdon C, White DL, Royse K, El-Serag HB, Jiao L. A prospective study of soluble receptor for advanced glycation end-products and colorectal cancer risk in postmenopausal women. Cancer epidemiology. 2016 Jun 1; 42:115-23.
Receptor for advanced glycation end products (RAGE) expressed on adipocytes and immune cells can bind to ligand N(e)-(carboxymethyl)-lysine (CML) and trigger dysregulation of adipokines and chronic inflammation. Soluble RAGE (sRAGE) mitigates the detrimental effect of RAGE. We examined the associations between circulating levels of CML-AGE and sRAGE and colorectal cancer (CRC).
In a case-cohort study of the Women's Health Initiative Study, blood levels of CML-AGE and sRAGE were measured using ELISA. We used multivariable Cox regression model to estimate hazard ratios (HRs) and 95% confidence intervals (CIs) of incident CRC in relation to quartiles (Q) of biomarker levels.
Average follow-up was 7.8 years for 444 cases and 805 subcohort members. In the subcohort, CML-AGE and sRAGE were inversely correlated with BMI (P values < 0.0001). Levels of CML-AGE and sRAGE were not associated with CRC. In BMI-specific analysis, the association between sRAGE and CRC was observed. Among women with BMI = 25kg/m(2), those with highest levels of sRAGE had significantly lower risk for CRC as compared to women with lowest levels of sRAGE (HRQ4versusQ1: 0.39; 95% CI: 0.17-0.91). This inverse association was not observed among women with BMI < 25kg/m(2) (P value for interaction = 0.01).
Among postmenopausal women, the RAGE pathway may be involved in obesity-related CRC.