【摘要】 目的　探讨生长激素减轻梗阻性黄疸时肠细菌及内毒素移位的作用及其机理。方法　将 60只大鼠随机均分为假手术组 (SO组 )、梗阻性黄疸组 (OJ组 )及生长激素组 (rhGH组 ) ,rhGH组每天皮下注射Saizen 0 .75u/kg ,SO组及OJ组则用等量生理盐水作对照。检测各组血内毒素水平 ,并取腹水、血及肠系膜淋巴结、肝脏、肾脏和脾脏作细菌培养 ,同时测定末段回肠之粘膜厚度及绒毛高度。结果　OJ组血内毒素值为 (0 .77± 0 .0 3 )u/ml,较rhGH组的 (0 .40±0 .0 2 )u/ml明显增高 (P <0 .0 1) ,rhGH组接近SO组的 (0 .3 3± 0 .0 3 )u/ml水平。OJ组细菌移位率为 5 8.8% ,较rhGH组 (10 .0 % )明显增高 (P<0 .0 1) ,rhGH组与SO组 (0 )比较 ,P>0 .0 5。rhGH组绒毛高度为 (2 3 7.5 2± 13 .65 ) μm ,较OJ组的(183 .3 9± 11.0 9) μm明显增高 (P<0 .0 1) ;rhGH组粘膜厚度为 (3 2 0 .81± 14 .3 4) μm ,较OJ组的 (2 5 5 .62± 16.5 8) μm增厚(P <0 .0 1)。结论　生长激素对肠粘膜屏障具有明显的保护作用 ,可有效减轻梗阻性黄疸时肠菌及内毒素的移位。更多还原

【Abstract】 Objective To investigate the effect of recombinant human growth hormone (rhGH) on intestinal bacteria and endotoxin translocation in experimental obstructive jaundice. Methods Obstructive jaundice rat models were made and divided into three groups: sham operation (SO) group, obstructive jaundice (OJ) group and obstructive with rhGH (OG) group. The number in each group was 20. The mice in rhGH group underwent subcutaneous injection each day of Saizen, with the dose of 0.75 u/kg, while SO group and OJ group received nitric sodium injection. All these maitained for 2 weeks, then the animals were killed and the endotoxin were determined by limulus test, and bacterial cultures of ascites, blood, mesenchymal lymph node, kidney, spleen and liver were made, and the height of villi and the thickness of intestinal walls were examined.Results The value of endotoxin in OJ group was (0.77±0.03) u/ml, higher than that in OG group and SO group, while it was (0.40±0.02) u/ml and (0.33±0.03) u/ml ( P <0.01). The bacteria translocation rate in OJ group was 58.8%, much higher than that in OG group, which was 10.0% ( P <0.01). There was no difference between OG group and SO group ( P >0.05). Villi height in OJ group was (183.39±11.09) μm, and thickness was (255.62±16.58) μm. While in OG group was (237.52±13.65) μm, and (320.81±14.34) μm ( P <0.01) respectively.Conclusion rhGH has significant effect on protecting the injuried mucosa barrier in obstructive jaundice, and can decrease endotoxemia and bacteria translocation.更多还原