RESUMO
<p><b>OBJECTIVE</b>To explore the effect of ecoimmunonutrition on gut barrier function in rats with systemic inflammatory response syndrome (SIRS).</p><p><b>METHODS</b>Rat models of SIRS were established by injecting lipo polysaccharide (LPS) via the tail vein. Sixty male Sprague-Dawley rats were randomly divided into 4 groups. One of the four enteral nutrition formulas (standard EN, immunonutrition, econutrition, ecoimmunonutrition) was given to each group respectively for 7 days. Serum D-lactate, diamine oxidase (DAO), ratio of urinary lactulose to mannitol (L/M) were measured on day 1 before LPS injection (D (-1)) and day 1, 3, 6 after LPS injection (D(+1), D (+3), D (+6)).</p><p><b>RESULTS</b>After 7 days of treatment,the level of serum D-lactate in econutrition group was significantly lower than those in standard EN or immunonutrition group (P< 0.05), and the level of serum D-lactate in all above three groups were significantly higher compared with ecoimmunonutrition group (P< 0.01). The level of serum DAO in standard EN group was higher than those in other three groups(P< 0.01). The L/M was increased in all the groups on D(+1), D(+3). It fell back to the basic level on D(+6)) in all the groups.The L/M in immunonutrition group was lower than those in other groups on D (+1) (P< 0.05), and it was higher in standard EN group than those in other groups on D (+3) (P< 0.01).</p><p><b>CONCLUSION</b>Ecoimmunonutrition, a enteral nutrition composed of immune-enhanced nutrient and ecologic, may protect the gut barrier function more effectively in rats with SIRS.</p>