严重脓毒症患者血管内皮生长因子水平及其与预后的关系

目的 通过检测严重脓毒症患者血清血管内皮生长因子(vascttlar endothelial growth Factor,VEGF)水平,探讨其与疾病严重程度及预后的关系.方法 采用对照研究方法,收集2006-07-2007-11期间天津医科大学第二医院ICU收治的严重脓毒症病例,根据28 d转归分为生存组和死亡组,对照组为健康人,严重脓毒症患者均于发病后1,3,7 d检测血常规、血气分析、血生化、G-反应蛋白、乳酸,计算APACHE Ⅱ评分,采用ELISA方法检测血清VEGF水平,统计学分析计量资料采用F检验,相关分析用spearman相关系数,死亡危险因素筛选采用Logistic回归分析.结果 共入选病例29例,生存16例,死亡13例,对照31例,对照组VECF为(78.77 4±8.15)pg/mL,生存组1,3,7 d VEGF为(210.47±59.40)pg/mL,(161.79±32.58)pg/mL,(85.33±12.13)pg/mL,其峰值出现在第1天,随病程进展VEGF逐渐下降,第7天与对照组比较差异无统计学意义(P>0.05);死亡组1,3,7 d VEGF为(324.12±44.35)pg/mL,(185.40±30.92)pg/mL,(273.32±55.23)pg/mL,其峰值亦出现在第1天,随病程进展第7天VEGF下降不明显,与对照组比较差异有统计学意义(P<0.01),VEGF与APACHE Ⅱ评分呈正相关(rs=0.510,P<0.01),均为影响预后的死亡危险冈素.结论 严重脓毒症患者VEGF水平在发病早期升高,其与APACHEⅡ评分有显著的相关性,是影响预后的死亡危险因素之一.

Levels of vascular endothelial growth factor in severe sepsis patients and its relation to prognosis

Objective To investigate the relationship between the serum levels of vascular endothelial growth factor(VEGF) and severity and prognosis by evaluating its changes in severe sepsis patients. Method Us-ing control study design, a total of 29 severe sepsis patients who admired in ICU department of Second Hospital of Tianjin Medical University from July 2006 to November 2007 were enrolled. The patients were divided into survival group (n=16) and death group (n=13) according to the clinical outcomes at 28 days after onset.A total of 31 healthy persons were enrolled into the control group. Clinical and laboratory data including blood routine test,blood-gas analysis,blood chemistry,C-reactive protein,lactic acid were collected on the first,third and 7th day after on-set,respectively. APACHE Ⅱ score were calculated. VEGF levels were determined using ELISA method. Quantita-tive data were analyzed by Ftest. Results The VEGFlevels ofthe control groupwere (78.77±8.15) pg/mL, the VEGF levels of the survival group on the first,third and 7th day were (210.47±59.40) pg/mL, (161.79 ±32.58) pg/mL and (85.33±12.13) pg/mL, respectively. The peak value of VEGF levels appeared on the first day, Then,it decreased with the progression of the disease. The VEGF levels did not differ significantly between the control group and survival group on the 7th day (P>0.05). The VEGF levels in the death group on the first, third and 7th day were (324.12±44.35) pg/mL,(185.40±30.92) pg/mLand (273.32±55.23) pg/mL, respectively. The peak value of VEGF levels in the death group also appeared on the first day, but it did not de-crease significandy on the 7 th day as compared that on theist day. The value of VEGF levels on the 7 th day were significantly higher than that of the control group (P<0.01 ). The levels of VEGF were positive correlated with APACHEⅡ score(rs = 0.510,P<0.01), both VEGF levels and APACHEⅡ score were risk factors for the clinical outcomes of these patients. Conclusions The serum levels of VEGF are elevated at early stage in severe sepsis patients. The VEGF levels, which might be a potential prognositic factor for sepsis patients are significantly correlated with APACHE Ⅱ score.