Serum Levels of BDNF in Patients with Adenoma and Colorectal Cancer.

2021 
The present study is aimed at examining the serum levels of brain-derived neurotrophic factor (BDNF) and investigating its role in differential diagnosis of colorectal cancer (CRC). Materials and Methods. In a Chinese population, we conducted a case-control study to compare the diagnostic performance of serum levels of BDNF and carcinoembryonic antigen (CEA) for CRC. We enrolled 61 healthy controls, 31 patients with adenomas, and 81 patients with CRC. We explored the correlation between serum levels of BDNF and several pathological features, such as tumor differentiation and TNM staging. Results. The serum levels of BDNF were significantly (p < 0.0001) higher in patients with CRC (10.64 ± 3.84, n = 81) than in the healthy controls (4.69 ± 1.69 ng/mL, n = 61). Serum BDNF also correlated with tumor size, tumor differentiation, and TNM staging (p < 0.05). For early diagnosis, the combination of BDNF (AUC 0.719; 95% CI, 0.621-0.816) and CEA (AUC 0.733; 95% CI, 0.632-0.909) slightly improved the diagnostic performance for CRC (AUC 0.823; 95% CI, 0.737-0.909). Conclusions. Combined detection of serum BDNF and CEA may thus have the potential to become a new laboratory method for the early clinical diagnosis of CRC.
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