双歧三联活菌对体外循环心脏直视手术患者肠黏膜屏障功能的影响

目的 探讨双歧三联活菌对体外循环心脏直视手术患者肠黏膜屏障功能的影响.方法 择期拟行体外循环下瓣膜置换术患者40例,年龄30～64岁,体重40～80 Kg,ASA分级Ⅱ或Ⅲ级,采用随机数字表法,将患者随机分为对照组(C组)和双歧三联活菌组(Y组),每组20例.Y组于术前7d开始,每日口服双歧三联活菌制剂(每片含活菌数0.5×107 CFU)4片,每日3次,连服7 d.分别于体外循环前(T1)、主动脉开放10 min(T2)、停体外循环即刻(T3)、术后2、6和18 h(T4～6)时采集中心静脉血样5 ml,采用紫外分光光度法测定血浆二胺氧化酶(DAO)活性和D-乳酸浓度,酶联免疫吸附法测定血浆IL-6和IL-10的浓度.结果 与T1时比较,两组其余时点血浆DAO活性和D-乳酸IL-6和IL-10浓度均升高(P＜0.05);与C组比较,Y组T2～5时血浆DAO活性和D-乳酸浓度降低,T4,5时血浆IL-6和IL-10浓度降低(P＜0.05).结论 双歧三联活菌可在一定程度上抑制炎性反应,改善体外循环心脏直视手术患者的肠黏膜屏障功能.

Abstract：

Objective To investigate the effects of probiotics on the plasma diamine oxidase (DAO) activity and D-lactate, IL-6 and IL-10 levels in patients undergoing open heart surgery under cardiopulmonary bypass (CPB) , trying to elucidate the mechanism of protective effect of probiotics against CPB- induced injury to intestinal mucosal barrier. Methods Forty ASA Ⅱ - Ⅲ patients of both sexes aged 30-64 yr weighing 40-80 kg undergoing open heart operation under CPB were randomized into 2 groups ( n = 20 each) : control group (group C) and probiotics group (group Y) . Group Y received Jinshuangqi (Bifid Triple Viable containing bifido-bacterium, lacto-bacillus, streptococcus thermophiles) 4 pills 3 times a day for 7 days before operation. Venous blood samples were taken from CVP line before operation (T1 ), at 10 min after aortic unclamping (T2 ) and at the end of CPB (T3 ) and at 2, 6, 18 h (T4,5,6) after operation for determination of plasma DAO activity and D-lactate, IL-6 and IL-10 levels.Results Plasma DAO activity, D-lactate, IL-6 and IL-10 levels were significantly increased after CPB was started at T2-6 as compared with the baseline values at T1 in both groups. Plasma DAO activity and D-lactate level were significantly lower at T2-5 , the plasma IL-6 level was significantly lower and plasma IL-10 level higher at T4,5 in group Y than in group C. Conclusion Probiotics can protect intestinal mucosal barrier in patients undergoing open heart surgery under CPB and attenuate inflammatory response.

Influence of probiotics on intestinal mucosal barrier function in patients undergoing open heart surgery under cardiopulmonary bypass

Objective To investigate the effects of probiotics on the plasma diamine oxidase (DAO) activity and D-lactate, IL-6 and IL-10 levels in patients undergoing open heart surgery under cardiopulmonary bypass (CPB) , trying to elucidate the mechanism of protective effect of probiotics against CPB- induced injury to intestinal mucosal barrier. Methods Forty ASA Ⅱ - Ⅲ patients of both sexes aged 30-64 yr weighing 40-80 kg undergoing open heart operation under CPB were randomized into 2 groups ( n = 20 each) : control group (group C) and probiotics group (group Y) . Group Y received Jinshuangqi (Bifid Triple Viable containing bifido-bacterium, lacto-bacillus, streptococcus thermophiles) 4 pills 3 times a day for 7 days before operation. Venous blood samples were taken from CVP line before operation (T1 ), at 10 min after aortic unclamping (T2 ) and at the end of CPB (T3 ) and at 2, 6, 18 h (T4,5,6) after operation for determination of plasma DAO activity and D-lactate, IL-6 and IL-10 levels.Results Plasma DAO activity, D-lactate, IL-6 and IL-10 levels were significantly increased after CPB was started at T2-6 as compared with the baseline values at T1 in both groups. Plasma DAO activity and D-lactate level were significantly lower at T2-5 , the plasma IL-6 level was significantly lower and plasma IL-10 level higher at T4,5 in group Y than in group C. Conclusion Probiotics can protect intestinal mucosal barrier in patients undergoing open heart surgery under CPB and attenuate inflammatory response.