【摘要】 将 30只豚鼠按随机数字表法分为感染对照组 (A)、感染治疗组 (B)和健康对照组 (C)。B组感染后灌饲双歧杆菌悬液 (CFU为 5× 10 12 /L) 1.5mL ,2次 /d。观察细菌或内毒素移位、肠黏膜菌群和肠黏膜损伤情况。结果显示 :①感染后第 3d ,A、B组细菌移位率分别为 39%和 15 % (P=0 .0 0 4 0 ) ,第 5d时分别为 31%和 7% (P =0 .0 0 2 0 ) ;感染后第 1d ,A组内毒素水平显著高于B组。②A组回盲部黏膜菌群中双歧杆菌量仅为C组的 1/ 10～ 1/ 6 0 ,B组双歧杆菌量明显增多 ;A组大肠埃希氏菌量在第 1～ 3d时增加约 2 0～ 30倍 ,但第 3d后B组大肠埃希氏菌量显著减少并接近正常水平。③回肠黏膜损伤以第 1～ 3d最为明显 ,A组感染后第 5d损伤评分仍明显高于C组(P <0 .0 5 ) ;B组第 3d时已明显修复 ,第 5d时已与C组无明显差异。提示 :补充外源性双歧杆菌能促进感染后受损肠黏膜屏障和生物屏障修复 ,有效防治肠道细菌或内毒素移位。更多还原

【Abstract】 The effect of Bifidobacterium on the translocation of bacteria and endotoxin in animal intestine was investigated by observation on the endotoxins translocation, mucosal bacteria and the damaged conditions of mucosa after 1.5 mL of Bifidobacterium liquid(CFU=5×10¹²/L) was administrated orally 2 times per day after the guinea pigs were infected. The results indicate that supplementary Bifidobacteria can promote the recovery of intestinal mucosal barrier and biological barrier and therefore prevent the translocation of endotocins and bacteria in intestine effectively.更多还原