›› 2007, Vol. 34 ›› Issue (7): 26-28.

• 动物营养与饲料科学 • 上一篇    下一篇

PCI-Ghrelin-28aa质粒微球对小鼠的促生长效应

杨连玉1,2,耿春银1,谢金芳1,刘佳佳1,徐永平2
  

  1. 1.吉林农业大学动物科技学院,长春 130118;2.大连赛姆生物工程技术有限公司博士后科研流动站,大连 116620
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-07-20 发布日期:2007-07-20

Somatotropic Efficacies of PCI-Ghrelin-28aa Carried with PLGA Microspheres

YANG Lianyu1,2,GENG Chunyin1,XIE Jinfang1,LIU Jiajia1,XU Yongping2
  

  1. 1.Faculty of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China; 2.Postdoctoral Research Center of Dalian SEM BIOEngineering Technology Lt. d. Co, Dalian 116620, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-07-20 Published:2007-07-20

摘要: 以乳酸-乙醇酸共聚物为载体,采用复乳-液中蒸发法制备PCI-Ghrelin-28aa真核表达质粒微球,微球大小与文献报道相符,平均粒径分布在2~3 μm间,测得的包封率为99.27%,载药量6.8 μg/mg,回收率65.7%;将质粒微球肌肉注射小鼠,并记录25 d里小鼠的体重变化情况;体重统计结果表明,25 d时微球包裹质粒组累积增重比裸质粒组、生理盐水组分别高14.3%、27.9%(P<0.05)。结论认为,载PCIGhrelin28aa质粒微球具有缓释作用,并有增强质粒吸收及表达的趋势。

关键词: PLGA; Ghrelin; 生长

Abstract: Injectable sustained release PCI-Ghrelin-28aa were prepared by double emulsion-in liquid evaporation process, using biodegrable poly lactic acid as carrier. The result of transfection in vivo showed that after 25 days, accumulative increased body weights on the group injected with PCI-Ghrelin-28aa microspheres was higher than those group injected with naked plasmid(14.3%), saline(27.9%) respectively. In conclusion, PCI-Ghrelin-28aa microspheres have a controlled release effect and tendency to enhance absorb and expression of PCI-Ghrelin-28aa.

Key words: PLGA; Ghrelin; growth

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