Abstract

目的 观察垂体腺苷酸环化酶激活肽(PACAP38)对培养的兔三叉神经节细胞及角膜瓣术后角膜神经生长的影响.方法 从2周龄新西兰白兔中分离三叉神经节细胞,并在神经元基础培养液中进行培养.培养24h后在培养液中分别加入1μmol/L PACAP38(A组)、 0.1μmol/L PACAP38(B组),C组培养液中加入PBS.1周后行抗神经纤维丝蛋白(NF200)免疫荧光染色鉴别培养的三叉神经节细胞.27只新西兰白兔右眼行角膜瓣手术,并分为3组,术后1d分别以10μmol/L PACAP38、5μmol/L PACAP38或PBS点眼,共8周,行角膜敏感度测定和NF200免疫荧光染色,评价术后不同时间角膜神经的修复情况.结果 PACAP38培养的三叉神经节细胞有较多神经细胞存活,伸出突触并交织呈网状,A组神经细胞存活最多.角膜瓣手术的3个组角膜敏感度随着术后时间的延长逐渐增加(Ftime=58.196,P=0.00),10μmol/L PACAP38点眼组角膜敏感度恢复最快.10μmol/L PACAP38点眼组和5μmol/L PACAP38点眼组角膜敏感度值明显高于PBS点眼组,差异均有统计学意义(P=0.000,P=0.005).角膜神经染色示10μmol/L PACAP38点眼组角膜神经密度较5μmol/L PACAP38点眼组和PBS点眼组高,神经干短端多膨大,以出芽方式发出细微的新生神经纤维芽.结论 PACAP38能促进兔三叉神经节细胞增生及诱导神经突形成,可促进角膜敏感性恢复及角膜神经修复再生。

Full Text
Paper version not known

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.