目的 观察角膜创伤后,TCRδ-/-小鼠角膜神经末梢修复情况。推测γδ T细胞在角膜神经末梢再生中的作用。
方法 选取C57小鼠和γδT细胞缺陷小鼠TCRδ-/-各4只,刮除角膜上皮。96小时后,小鼠处死,取角膜进行免疫荧光染色。用anti-tubulin III-PE嗜染神经末梢,用DAPI嗜染角膜上皮细胞。角膜平铺制片后,去卷积显微镜下观察计数,对所有数据进行统计学分析,评价角膜神经末梢修复情况。
结果 γδT细胞缺陷组小鼠角膜神经末梢修复较差,神经末梢计数明显低于正常组C57小鼠( P < 0. 01)。
结论 角膜神经的修复过程中依赖γδT细胞的存在,该细胞可能是通过介导角膜早期炎症反应促进神经末梢的修复。
Objective The contribution of TCRδ-/- mice to sensory Corneal nerve regeneration was investigated in C57 wildtype murine and TCRδ-/- mice.
Methods using a model of corneal abrasion that removes the stratified epithelium and subbasalar nerve plexus,Point counting analysis of sub-basal nerve density in wound-related corneal regions at 96 hours after central epithelial abrasion comparing wildtype and TCRδ-/- mice, (n=4, means ± SEM).
Result In TCRδ-/- mice, there was a 30% attenuation compared with C57 wildtype mouse.
Conclusion These results document a beneficial role for the Corneal nerve regeneration depending on gamma delta T cell related inflammatory response to corneal epithelial abrasion. Gamma Delta T cell is necessary for Efficient Corneal Nerve Regeneration.
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