Abstract
BackgroundThe purpose of this study was to provide more insight in the course of cytokine concentrations related to pathologic response (pR) and complications after neoadjuvant chemoradiotherapy (NCRT) and esophagectomy in esophageal cancer patients. MethodsPatients treated with NCRT followed by transthoracic esophagectomy (n = 35) or transthoracic esophagectomy alone (n = 8) were included. Eight different cytokine concentrations were determined during NCRT, esophagectomy, and the first postoperative week. ResultsPlatelet-activating factor before NCRT was associated with pR (P = .011) and remained elevated in patients with a better response. Concentrations of intestinal fatty acid–binding protein and angiopoietin 1 (Ang-1) were different between patients with and without NCRT. Decreased concentrations of Ang-1 on the third postoperative day were associated with postoperative complications (P = .046). ConclusionsIn this observational study, elevated platelet-activating factor concentrations before NCRT were associated with pR. NCRT is associated with decreased Ang-1 concentrations, whereas reduced Ang-1 concentrations were associated with postoperative complications.
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