Affiliations: [a] Department of Gastrointestinal Surgery, Jingmen First People’s Hospital, Jingmen 448000, Hubei, China | [b] Department of Ophthalmology, Jingmen First People’s Hospital, Jingmen 448000, Hubei, China | [c] Department of Anesthesiology, Jingmen First People’s Hospital, Jingmen 448000, Hubei, China
Correspondence:
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Corresponding author: Songbai Zhang, Department of Gastrointestinal Surgery, Jingmen First People’s Hospital, Xiangshan Avenue 67, Jingmen, Hubei, China. E-mail: zhangsongbai@aliyun.com.
Note: [1] These authors contributed equally to this work.
Abstract: The aim of present study was to investigate the clinical significances of mannose receptor (MR) and CD163 in colorectal cancer (CRC). Enzyme-linked immunosorbent assay (ELISA) and immunohistochemistry (IHC) were utilized for this analysis. Preoperative serum MR and CD163 levels ranged from 0.153 to 0.804 μg/ml (median = 0.359 μg/ml) and from 0.319 to 1.314 μg/ml (median = 0.685 μg/ml) in CRC patients respectively. Strikingly, preoperative serum levels of MR and CD163 were significantly increased in CRC patients than in healthy individuals (P< 0.0001). ROC analyses suggested that the optimum diagnostic cut-offs for serum MR and CD163 were 0.3485 μg/ml (AUC 0.7205, sensitivity 54.82%, and specificity 80.46%) and 0.6111 μg/ml (AUC 0.7463, sensitivity 62.65%, and specificity 80.46%) respectively. Detection of serum MR and CD163 together obviously enhanced the diagnostic accuracy (AUC 0.7968, sensitivity 69.28%, and specificity 77.01%). Then, preoperative serum MR and CD163 levels correlated significantly with serum CEA, CA19-9 and CA72-4 concentrations in CRC patients (P< 0.05). High MR and CD163 expression in serum was associated significantly with shorter overall survival (P< 0.05) and demonstrated as adversely prognostic factors (P< 0.05). Further, expression of MR and CD163 in CRC tissues was significantly higher than that in para-cancer tissues (P< 0.001). High expression of MR and CD163 in CRC tissues also correlated significantly with shorter overall survival (P< 0.05). MR and CD163 expression in serum or CRC tissues all correlated positively with the degree of lymphatic metastasis (P< 0.0001). In conclusion, MR and CD163 may be novel biomarkers for CRC patients.
Keywords: Mannose receptor, CD163, marker, colorectal cancer
