Objective: To investigate the effect of hyperthermic intraoperative intraperitoneal chemotherapy(HIIC) and postoperative nutritional support on the intestinal permeability and the cellular immunity function in patients with advanced gastric cancer.
Methods: All the patients diagnosed as advanced gastric cancer in the Gastric Tumor Diagnosis and Treatment Center of Jiangsu Cancer Hospital were randomly divided into three groups using random digit table:(1)EN group treated with enteral nutrition during postoperative period; (2)HIIC+EN group treated with HIIC combined with postoperative enteral nutrition;(3)HIIC+PN group treated with HIIC combined with postoperative parenteral nutrition. Index of lactulose/mannitol(L/M) ratio was used to evaluate the permeability of intestinal mucosa. The percentage of CD4(+), CD8(+) and NK cell, the ratio of CD4/CD8 T cell in peripheral blood were tested by flow cytometry. The time points of these measurements were the day before surgery, postoperative days (POD) 3, 7, and 12.
Results: Compared with the day before surgery(POD-1), the ratio of L/M on POD+3 increased significantly in all the three groups(0.1235±0.0611 vs. 0.0280±0.0183, 0.1648±0.0571 vs. 0.0305±0.0208, 0.1702±0.0628 vs. 0.0298±0.0229)(P<0.05) and then decreased gradually. The L/M ratio of EN(0.0278±0.0217) and HIIC+EN(0.0336±0.0235) groups recovered to the baseline on POD+12, however HIIC+PN group still had elevated L/M ratio(0.0616±0.0430). The percentage of CD4(+)T cell and the ratio of CD4/CD8 in HIIC+EN group and HIIC+PN group were significantly lower than those in EN group(P=0.033, P=0.002, respectively). Compared with the POD-1,the percentage of CD4(+)T cell and the ratio of CD4/CD8 in HIIC+EN group and EN group on POD+12 were increased significantly(P<0.05).
Conclusions: HIIC may cause significant increase in intestinal permeability and inhibit cellular immunity in patients undergoing radical resection for advanced gastric cancer. Mucosal permeability can be reversed by enteral nutrition.
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