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Background: In recent years, immunonutrition has been introduced and proposed to have a positive modulatory effect on inflammatory and immune responses and gut function for surgical patients, especially for patients undergoing gastrointestinal cancer resection. We conducted this parallel-group, randomized and double-blind clinical controlled trial to investigate the efficacy of perioperative enteral immunonutrition (EIN) on clinical and immunological outcomes of patients undergoing esophageal resection.
Methods: A randomized, parallel-group, double-blind, clinical trial was conducted between December 1, 2017 and March 1, 2018. This study enrolled 120 patients with esophageal cancer. And 112 patients were divided into two groups randomly: EIN group and enteral nutrition (EN) group. The EIN contained extra immunonutritional substrates, including a consistent combination of arginine, RNA and the omega-3 fatty acids compared with EN. Immune indicators were measured at preoperative day 7, postoperative day (POD) 1, 3, 7 and post-discharge day (PDD) 30.
Results: There were 56 participants randomized to each group. Finally, 53 patients in EIN and 50 patients in EN were analyzed. Immune indicator was the primary outcome in this study. EIN yielded a significantly lower rate of CD8/CD3 (%) at POD 3 compared with EN group (P=0.005). The rate of CD4/CD8 (%) in EIN group was higher than that in EN group at POD3 (P=0.004). The serum levels of IgM at POD 3 and 7 were significantly higher in EN group compared with EIN group (P=0.025 and P=0.009, respectively). The rate of NK (%) and the serum level of IgA were significantly higher in EIN group compared with EN group at PDD 30 (P=0.022 and P=0.041, respectively). No significant differences were found in 2-year progressionfree survival and overall survival.
Conclusions: Immunonutrition is a safe and feasible nutritional treatment, which has a positive modulatory impact on immune responses after esophagectomy. Although no significant difference was found in clinical and survival outcomes between EIN and EN groups, immunonutrition could still have a positive effect on immunological function of patients undergoing esophagectomy.
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| http://dx.doi.org/10.21037/apm-20-1399 | DOI Listing |
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