The study of n-3PUFAs protecting the intestinal barrier in rat HS/R model

Lipids in Health and Disease

Research

Jieshou Li¹  Xinying Wang¹  Ning Li¹  Yang Li¹ 

[1] Research Institute of General Surgery, Jinling Hospital, School of Medicine, Nanjing University, 305 Zhongshan East Road, 210002, Nanjing, China;

关键词: Hemorrhagic shock;    Resuscitation;    Tight junction;    Occludin protein;    I-FABP;    n-3 PUFAs;   

DOI  :  10.1186/1476-511X-13-146

 received in 2014-06-14, accepted in 2014-08-05,  发布年份 2014

来源: Springer

【 摘 要 】

BackgroundN-3 PUFAs have been demonstrated in vitro it could prevent the intestinal tight junctions (TJs) from the ischemia/re-perfusion injury and the inflammatory reaction injury. The purpose of this study was to evaluate the protection of n-3 PUFAs on the intestinal TJs in the rat model of hemorrhagic shock followed by resuscitation.MethodsMale SD rats (n = 72; 250 ~ 300 g) were randomly divided into 6 groups: SHAM, hemorrhagic shock (HS), hemorrhagic shock/resuscitation (HS/R), ω-6 group, ω-3 group and ω-3 treatment group. Shock was induced, and a mean arterial pressure was maintained at 35 to 40 mmHg for 60 minutes. Resuscitation was carried out by returning half of the shed blood and Ringer’s lactate solution. In ω-6 and ω-3 group, Intralipid or fish oil (0.2 g/Kg), respectively, was infused 30 minutes after shock. And fish oil was infused with resuscitation in ω-3 treatment group. Half of each group was killed at 30 minutes and 4 hours after resuscitation, respectively. The serum samples and the intestinal sample was collected for further examination.ResultThere is no difference between ω-3, ω-3 treatment and sham group in Chiu’s score, but the other three groups have higher scores than they did. Compared with HS, HSR and ω-6 group, ω-3 and ω-3 treatment group showed most intact in intestinal mucoscal villi and TJs through HE, SEM and LSCM. The levels of IL-6 and TNF-α of bowel tissue in ω-3 and ω-3 treatment group were significantly lower than HS and HSR groups’. At the time point of 30 min, the levels of serum endotoxin were dramatically higher in HS、HSR and ω-6 groups when compared with ω-3, ω-3 treatment and sham group. However, it in ω-3 group was greater than sham and HS group until 4 hours.ConclusionFish oil pretreatment before resuscitation showed a beneficial effect to the intestinal TJs and atteunated inflammation after H/R in HS/R rat model and is better than ω-6 PUFAs did.

【 授权许可】

CC BY   
© Li et al.; licensee BioMed Central Ltd. 2014