Association of plasma total and high-molecular-weight adiponectin with risk of colorectal cancer: an observational study in Chinese male.
2012
The research is to investigate the association between plasma concentrations of total and high-molecular-weight (HMW) adiponectin and risk of early and advanced colorectal cancer. One hundred and sixty-five male colorectal cancer patients and one hundred and two controls were enrolled; based on the T factor of the TNM system, intraepithelial carcinoma and submucosally invasive carcinoma were defined as early cancer, and invasion into the muscularis propria or deeper was defined as advanced cancer. The plasma levels of glucose, fasting insulin, total cholesterol, triglyceride, and total and HMW adiponectin levels were measured. Each factor level was designated as low or high, and the risk of cancer was estimated by univariate and multivariate logistic regression analyses. In the patients with early cancer, high waist/hip ratio (WHR), high fasting insulin, high HOMA model insulin resistance index (HOMA-IR), low total adiponectin and HMW adiponectin were all associated with a significant increase in the odds ratio (OR) by univariate analysis. In multivariate analysis, WHR, HOMA-IR, total adiponectin and HMW adiponectin were all related to increased cancer risk. However, in the patients with advanced cancer, only low HMW adiponectin was associated with a significant increase in the OR by univariate analysis. In multivariate analysis, a low HMW adiponectin level was still related to increased cancer risk, with an adjusted OR of 3.971 (P = 0.036). In conclusion, a decreased level of adiponectin was a strong risk factor not only for early colorectal cancer but also for advanced colorectal in Chinese male patients. HMW adiponectin might be more closely associated with colorectal cancer risk than total adiponectin.
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