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題 名 | Capability of Neurite Regeneration of Retinal Explant from Adult Rat after Optic Nerve Injury=成年大白鼠視神經受傷後的視網膜人工培養之神經軸突的再生能力 |
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作 者 | 蔡榮坤; 王惠珠; 許明木; | 書刊名 | The Kaohsiung Journal of Medical Sciences |
卷 期 | 14:5 1998.05[民87.05] |
頁 次 | 頁274-279 |
分類號 | 416.746 |
關鍵詞 | 大白鼠; 視神經受傷; 視網膜; 人工培養; 神經軸突再生能力; Adult rat; Neurite regeneration; Optic nerve axotomy; |
語 文 | 英文(English) |
中文摘要 | 成年哺乳動物的中樞神經受傷後無法自行再生。 為了瞭解成年哺乳動物的視神經受傷後是否由內在喪失再生的功能,我們利用成年大白鼠在視神經受傷後取其視網膜移植片作組織培養來研究其軸突再生的能力。在大白鼠視神經受傷後我們在受傷後三天,一星期,二星期及三星期分別取出其神網膜作體外培養四天後,再觀察視神經軸突的再生能力。而利用免疫細胞組織染色的方法來確認再生之軸突源於視網膜神經元。結果顯示當視神經受傷後成年大白鼠的視網膜移植具有神經軸突再生的能力。而且在視神經受傷後一星期的一組再生能力最強,過了一星期後此再生能力逐漸減弱。相反的,沒有受傷的對照眼在組織培養中並無軸突再生的能力。這結果顯示當成年大白鼠的視神經受傷後,其視網膜的移植片在組織培養中具有神經軸突再生的能力,而且此再生能力再受傷一週後就隨著時間而遞減。 |
英文摘要 | Axons of the central nervous system in adult mammals do not regenerate spontaneously after axotomy. To understand whether the optic nerve of adult annmals loses the intrinsic capability to regenerate after injury, we have studied the capability of neurite regeneration of retinal explants from adult rat after optic nerve axotomy in vitro. After experimental blunt damage to the optic nerve of adult Wistar rat, the retinal explants from three days, one week, two weeks and three weeks after axotomy were put in tissue culture to observe the neurite growth after four days' incubatin. The neurites were identified as retinal neuron origin by immunocytochemical staining using monoclonal antibody to neurofilament. The results demonstrate that retinal explants from adult rat after optic nerve damage have the capability of neurite regeneration; the capability is strongest in the group of one week after axotomy of optic nerve, but it decreases with passage of the time. On the other hand, the retinal explant from the control group of uninjured eye does not regenerate neurite in tissue culture. These results indicate that the retinal explant of adult rat has intrinsic capability to regenerate after optic nerve injury in vitro, and the capability of neurite regeneration decreases after one week post-trauma. |
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