Abstract
This prospective, randomized, controlled study evaluated plasma levels of interleukin-18 (IL-18) and monocyte chemotactic protein-1 (MCP-l) in patients undergoing cholecystectomy. Forty patients were randomized to undergo laparoscopic cholecystectomy (LC) or open cholecystectomy (OC). Plasma concentrations of IL-18 and MCP-1 were measured before anaesthesia (T(0)), before operation (T(1)), 30 min after the start of the operation (T(2)) and at the end of the operation (T(3)). Compared with T(0), the IL-18 concentration was significantly increased at T(2) and T(3) in both groups. In addition, the MCP-1 concentration was significantly increased at T(3) compared with T(0) in the LC group. Both the IL-18 and MCP-1 concentrations were significantly lower in the OC group than in the LC group at T(3). It is suggested that carbon dioxide pneumoperitoneum may cause immunodepression, that epidural anaesthesia can attenuate the stress response, and that IL-18 and MCP-1 are sensitive markers for evaluating the patient's immune function.
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