肿瘤坏死因子-α、内毒素与重症胸腹创伤后急性心肌损伤的关系及机制

Correlations between Tumor Necrosis Factor-α and Lipopolysaccharide with Acute Myocardial Dysfunction after Severe Thoraco-abdominal Injuries and Their Mechanisms

目的 探讨肿瘤坏死因子-α （TNF-α）、内毒素 （LPS） 与重症胸腹创伤后心肌损伤的发生关系及可能的作用机制。 方法 回顾性分析2009年1月至2012年6月在解放军第二五三医院就诊、创伤指数 （TI） ≥17分、除外合并颅脑损伤及急诊死亡的胸腹创伤82例患者的临床资料，其中男58例，女24例；年龄16～76（43.59±16.33） 岁。开放性损伤17例，闭合性损伤65例；坠落伤23例，交通伤47例，钝性伤8例，锐器剌伤4例。伤后至就诊时间（1.51±0.52） h。在救治的同时抽血检测肌酸激酶同工酶（CK-MB）、心肌肌钙蛋白T （cTnT）、TNF-α、LPS，并对检测结果进行相关性分析。 结果 心肌损伤指标检测结果：CK-MB （158.74±31.59） U/L，cTnT （496.25±58.46） pg/ml；损伤因子检测结果：TNF-α （36.41±18.09） ng/ml，LPS （343.66±106.02） U/L；均高于正常健康人。CK-MB与TNF-α、LPS的相关系数 （r） 分别为0.923 1和0.883 2，cTnT与TNF-α、LPS的r值分别为0.955 6和0.889 1，均呈显著正相关。 结论 TNF-α、LPS参与了重症胸腹创伤后心肌损伤的发生、发展，加强对TNF-α、LPS的早期干预，或有可能减轻重症胸腹创伤后心肌细胞的损伤，提高重症胸腹创伤患者的生存率。

Objective To investigate the correlations between tumor necrosis factor-α （TNF-α） and lipopolysaccharide （LPS） with acute myocardial dysfunction after severe thoraco-abdominal injuries and possible mechanisms. MethodsClinical data of 82 patients with severe thoraco-abdominal injuries who were admitted to the 253rd Hospital of People’s Liberation Army from January 2009 to June 2012 were retrospectively analyzed,whose trauma index （TI） were all above or equal to 17 points. Patients with concomitant brain injuries and patients who were brought in dead were excluded from this study. There were 58 male and 24 female patients with their age of 16-76 （43.59±16.33） years. There were 17 patients with open injuries and 65 patients with closed injuries. There were 23 patients with fall injuries,47 patients with trafficinjuries,8 patients with blunt injuries,and 4 patients with penetrating injuries. The time from injury to admission was 1.51±0.52 hours. Blood creatine kinase-MB （CK-MB）,cardiac troponin T （cTnT）,TNF-α and LPS were examined during emergency treatment,and the correlations between the results were analyzed. Results Myocardial dysfunction was shown by CK-MB of 158.74±31.59 U/L and cTnT of 496.25±58.46 pg/ml. Injury factors were TNF-α of 36.41±18.09 ng/mland LPS of 343.66±106.02 U/L. CK-MB was positively correlated with TNF-α and LPS with the correlation coefficient （r）of 0.923 1and 0.883 2 respectively. cTnT was also positively correlated with TNF-α and LPS with r of 0.955 6 and 0.889 1respectively. Conclusion Both TNF-α and LPS participate in the pathogenesis and development of acute myocardial dysfunction after severe thoraco-abdominal injuries. Early intervention against TNF-α and LPS may alleviate acute myocardial dysfunction and improve patients’ survival rate after severe thoraco-abdominal injuries.