| 鸡脑光信息通路的对侧联系 |
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| 引用本文： | 刘春凌,胡满,王鹏,张利卫,杨昊,刘振斌.鸡脑光信息通路的对侧联系[J].中国动物保健,2012(6):5-7. |
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| 作者姓名： | 刘春凌 胡满 王鹏 张利卫 杨昊 刘振斌 |
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| 作者单位： | 1. 河北农业大学动物科技学院河北保定071001
2. 河北北方学院动物科技学院河北张家口075000 |
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| 基金项目： | 国家自然科学基金(30840059);河北农业大学校长基金(20040416) |
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| 摘 要： | 目的:为了进一步阐明光照对鸡生产性能的神经调节机制,为养鸡生产科学利用光照和兽医神经外科学提供一定的理论依据,用HRP追踪技术对鸡脑光信息通路的对侧联系进行了观察。方法:用脑立体定位仪向鸡脑圆核注射微量3%WGA-HRP,存活30小时后灌流固定,取脑并制作冰冻切片,用TMB法检测鸡脑光信息通路中投射向对侧的HRP标记神经细胞。结果:将WGA-HRP注入圆核后,除在同侧鸡离顶盖光信息通路的中央灰质层(SGC)和SP/IPS核见有大量HRP标记神经细胞外,在对侧SGC、SP/IPS核和圆核也观察到了一些HRP标记神经细胞体和纤维,但其数量较少,分布范围小,在对侧圆核的不同部位HRP标记细胞和纤维分布位置不同,标记范围呈前后小中间大的纺锤状。讨论:结果表明鸡离顶盖光信息通路主要是同侧投射,也有部分对侧投射。对侧投射可能通过对同侧投射辅助和抑制作用来整合信息,使特定单元结合和处理来自双眼的信息,有助于大脑获得更加精确而全面的信息。
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| 关 键 词： | 鸡脑 光信息通路 对侧 联系 |
The Contralateral Connections of Optical Pathway in Chick Brain |
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| Liu Chunling,Hu Man,Wang Peng,Zhang Liwei,Yang Hao,Liu Zhenbin.The Contralateral Connections of Optical Pathway in Chick Brain[J].China Animal Health,2012(6):5-7. |
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| Authors: | Liu Chunling Hu Man Wang Peng Zhang Liwei Yang Hao Liu Zhenbin |
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| Institution: | 1 (1. College of Animal Science and Technology, Agricultural University of Hebei, Baoding Hebei, 071001; 2. College of Animal Science and Technology, Hebei North University, Zhangjiakou Hebei, 075000) |
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| Abstract: | Purpose:In order to further understand the nerve regulation mechanism in affect of light on chick production performance so as to provide some theoretical basis for the application on the using of light to improve the chick production performance and on the veterinary nerve surgery, the contralateral connections of optical pathway in chick brain were observed using HRP tracing method. Methods: Small amount of 3% WGA-HRP was injected into Rt in chicken brain using the stereotaxic instrument. After survival period of 30 hours, the chicks were perfused to fix the animals. The brains were removed and were sectioned by the cryostat. The HRP labeled nervous cells projecting to contralateral side in the optical pathway were tested using TMB method. Results: After injecting WGA-HRP into nucleus rotundus, besides the numerous labled nervous cells in the ipsilateral SGC and SP/IPS of the chicken tectofugal optical pathway, some HRP labeled nervous cells and fibers were also observed in the contralateral SGC, SP/IPS and nucleus rotundus. Their number is fewer than those of the ipsilateral side, having smaller distributing area. The locations of the labeled nervous cells and fibers are different with the regions of the contralateral nucleus rotundus. Their labeled extent showed a spindlye shape from the anterior to the posterior part of the nucleus rotundus. Discussion: The results indicated that the ipsilateral projection is the main projection in the tectofugal optical pathway. There are also some contralateral projections in it. The contralateral projections may play a role by assistant and inhibition process. The projection could make the specific units combined and managed the messages came from binoculus, being helpful for the cerebrum to gain more exact and overall messages. |
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| Keywords: | chick brain optical pathway contralateral side connection |
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