扬子鳄胚胎大脑皮层神经元核内包涵体的超微结构特征  

Ultrastructural Research on Intranuclear Inclusions in the Developing Cerebral Cortex of Alligator sinensis

作　　者：杨传秀[1] 杨超[2] 陈壁辉[2] 

机构地区：[1]皖南医学院生理学教研室,芜湖241001 [2]安徽师范大学生命科学学院,芜湖241000

出　　处：《动物学杂志》2003年第2期20-22,T001,共4页Chinese Journal of Zoology

基　　金：国家自然科学基金资助 (No.39470 0 92 );安徽省优秀青年教师基金资助 (No .2 0 0 0jq135 )

摘　　要：孵化 4 0、5 0d扬子鳄胚胎的海马皮质及刚孵出的小鳄大脑皮层各部的部分神经元细胞核内均有核内包涵体出现。按其形态可将它们分为两大类 :膜性包涵体和核体。膜性包涵体位于近内核膜处 ,直径 0 3～ 0 9μm ,是由一到几层膜组成的囊泡状结构 ;核体体积较小 ,0 2～ 0 4 μm ,位于近核仁处或近内核膜 ,周缘的电子致密度较高 ,中心较清亮。本文就扬子鳄的核内包涵体同其它动物的核内包涵体的形态、出现时间进行了比较 ,并就其作用进行了讨论。Intranuclear inclusions were found in some neurons of the Alligator sinensis cerebral cortex on the 40 th , 50 th day and incubation period.These could be divided into membranous nuclear inclusions and nuclear bodies. The membranous nuclear inclusions comprised one to several layers of membrane located beside the inner nuclear membrane with a diameter of about 0.3-0.9?μm. The nuclear bodies were smaller in diameter (0.2-0.4?μm), consisted of a dark periphery and light core and lay near the inner nuclear membrane or nucleolus. The structure, emergence phase and function of intranuclear inclusions in Alligator sinensis were discussed and compared with those in some other animal species.

关 键 词：扬子鳄 胚胎 大脑皮层 神经元 细胞核 超微结构特征 核内包涵体 

分 类 号：Q954[生物学—动物学]