雏鸡投射向圆核的SP/IPS核细胞形态研究  

Morphological Studies on the Neurons in Nuclei SP/IPS Projecting to Nucleus Rotundus in Chicks

作　　者：廖智慧[1] 胡满[1] 郑世学[1] 崔亚利[1] 赵丽杰[1] 刘佳[1] 陈坤[1] 狄惠[1] 

机构地区：[1]河北农业大学动物科技学院,保定071001

出　　处：《畜牧兽医学报》2007年第10期1126-1130,共5页ACTA VETERINARIA ET ZOOTECHNICA SINICA

基　　金：教育部留学回国人员科研启动基金(2005383);河北农业大学校长基金(20040416)

摘　　要：顶盖前下核/顶盖前间下核(Nucleus subpre-tectalis/nucleus interstito-pretectalis-subpretectalis,SP/IPS核)向圆核的投射是鸟类视觉信息传导通路的一个重要组成部分。本试验使用羰花青荧光染料DiI逆向神经标记技术研究了这些投射向圆核的SP/IPS细胞(S细胞)的形态特征。根据树突的数量及分枝情况,标记出的S细胞可分为Ⅰ型细胞和Ⅱ型细胞,然后根据次级树突的数量又分别将这2种细胞分为简单型和复杂型2种。形态学测量表明,Ⅰ型细胞的胞体大小、面积均小于Ⅱ型细胞,其数目也略少。The projection from nucleus subpre-tectalis/nucleus interstito-pretectalis-subpretectalis （SP/IPS） to nucleus rotundus （Rt） is an important part of avian visual pathway. To reveal the morphological features of SP/IPS cells （S cells） which project to Rt, they were retrogradely labeled with cyanine perchlorate DiⅠ in chicks. Two different types of neurons, ＂type Ⅰ cells＂ and ＂type Ⅱ cells＂ were identified. Based on the amount of the secondary dendrites, these cells were further divided into simple and complex cells, respectively. Morphological analysis indicated that the type Ⅰ cells were smaller and fewer than type Ⅱ cells.

关 键 词：雏鸡 SP/IPS核 圆核 视觉 

分 类 号：S852.16[农业科学—基础兽医学]