Study on serum proteomic features in patients with and without recurrence or metastasis after surgical resection of esophageal carcinoma
The purpose of this study was to identify specific biomarkers for recurrence or metastasis of esophageal carcinoma in serum of patients subjected to esophagectomy. Surface-enhanced laser desorption/ionization time-of-flight mass spectrometry (SELDI-TOF-MS) combined with IMAC-Cu2+ ProteinChip array were performed for the serum protein profiling in patients after surgical resection of esophageal carcinoma. Two groups of patients were analyzed: 38 patients without recurrence or metastasis (Group 1) and 22 patients with recurrence or metastasis after resection (Group 2).