Akihisa Matsuda1, Marina Yamada2, Satoshi Matsumoto2, Nobuyuki Sakurazawa2, Takeshi Yamada3, Takeshi Matsutani3, Masao Miyashita2, Eiji Uchida3. 1. Department of Surgery, Nippon Medical School Chiba Hokusoh Hospital, 1715 Kamagari, Inzai, Chiba, 270-1694, Japan. a-matsu@nms.ac.jp. 2. Department of Surgery, Nippon Medical School Chiba Hokusoh Hospital, 1715 Kamagari, Inzai, Chiba, 270-1694, Japan. 3. Department of Surgery, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo, 113-8603, Japan.
Abstract
PURPOSE: Lysophosphatidylcholine (LPC), which is generated from phosphatidylcholine (PC) and metabolized by autotaxin (ATX), modulates immune responses via its anti-inflammatory property. We investigated the association between LPC and postoperative complications (POCs) after colorectal cancer surgery (CRC). METHODS: The subjects of this study were 43 patients who underwent surgery for CRC. Peripheral blood samples were collected preoperatively and immediately after surgery, and on postoperative days (PODs) 1, 3, 5, and 7. Patients were divided into a No-POC group (n = 33) and a POC group (n = 10). Blood LPC, IL-6, PC, and ATX levels were measured by specific enzymatic assays or ELISA. RESULTS: The postoperative to preoperative LPC ratios were lowest on POD 1 in both groups. The POC group had significantly lower LPC ratios throughout the perioperative period than the No-POC group. The LPC ratios were inversely correlated with IL-6. The predictive impact of LPC ratios on POCs was demonstrated by ROC analysis (cut-off 51.2%, AUC 0.798) and multivariate analysis (OR 15.1, P = 0.01). The postoperative PC ratios decreased more after surgery in the POC group. ATX levels did not change significantly in either group. CONCLUSIONS: Decreased postoperative LPC is associated with increased postoperative inflammatory response and POCs. The decreased PC supply to the circulation is a mechanism of the postoperative LPC decrease.
PURPOSE:Lysophosphatidylcholine (LPC), which is generated from phosphatidylcholine (PC) and metabolized by autotaxin (ATX), modulates immune responses via its anti-inflammatory property. We investigated the association between LPC and postoperative complications (POCs) after colorectal cancer surgery (CRC). METHODS: The subjects of this study were 43 patients who underwent surgery for CRC. Peripheral blood samples were collected preoperatively and immediately after surgery, and on postoperative days (PODs) 1, 3, 5, and 7. Patients were divided into a No-POC group (n = 33) and a POC group (n = 10). Blood LPC, IL-6, PC, and ATX levels were measured by specific enzymatic assays or ELISA. RESULTS: The postoperative to preoperative LPC ratios were lowest on POD 1 in both groups. The POC group had significantly lower LPC ratios throughout the perioperative period than the No-POC group. The LPC ratios were inversely correlated with IL-6. The predictive impact of LPC ratios on POCs was demonstrated by ROC analysis (cut-off 51.2%, AUC 0.798) and multivariate analysis (OR 15.1, P = 0.01). The postoperative PC ratios decreased more after surgery in the POC group. ATX levels did not change significantly in either group. CONCLUSIONS: Decreased postoperative LPC is associated with increased postoperative inflammatory response and POCs. The decreased PC supply to the circulation is a mechanism of the postoperative LPC decrease.
Entities:
Keywords:
Colorectal cancer; Lysophosphatidylcholine; Postoperative complications; Surgery
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