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AIM To compare the effects of intravenous route and peritoneal route on liver targeted uptake andexpression of plasmid delivered by glyco-poly-L-lysine (G-PLL).METHODS The plasmid pTM/MMP-1 which could be expressed in eukaryotic cells was bound to thegalactose-terminal glyco-poly-L-lysine (G-PLL), and then was transferred into Wistar rats by intravenousand intraperitoneal injection respectively. Afterwards the expression and distribution of the plasmid wereobserved at different time points by in situ hybridization and immunohistochemistry.RESULTS The plasmid could be expressed obviously in 24 hours after being transferred in vivo by bothintravenous and intraperitoneal route. One week later the expression began to decrease, and still could beovserved three weeks later. Although both the intravenous and intraperitoneal route could deliver theplasmid to liver targetly, the effect of the former was better as compared with that of the latter.CONCLUSION Intravenous route was better for liver targeted uptake and expression of G-PLL-boundplasmid than peritoneal route.
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综合应用中西药物预防术后肠粘连的实验研究
术后肠粘连和粘连性肠梗阻的发病率在小儿剖腹术中约占6%,且发病率逐年增高.因此,术后肠粘连的预防甚为重要.对术后肠粘连的预防,国外多应用皮质激素类或促进局部纤溶的药物,国内则广泛应用中药制剂.但文献报告多为单独用某种药物.