对处于变态期和成年期的华西雨蛙脑端脑的组织学研究。
Histological studies on the telencephalon of Hynobius leechii at the metamorphosis phase and the adult phase.
机构信息
College of Chemistry and Life Science, Shenyang Normal University, Shenyang 110034, China.
出版信息
Neurosci Bull. 2009 Aug;25(4):196-202. doi: 10.1007/s12264-009-0213-z.
OBJECTIVE
To investigate the telencephalon developmental characteristics of Hynobius leehii, and enrich the research data of comparable neurobiology and nervous system development of amphibian.
METHODS
HE staining and Nissl staining methods were used to study the telencephalon histological structure of Hynobius leechii at both the metamorphosis and the adult phases, and to explore the developmental phases of telencephalon.
RESULTS
The olfactory bulb could be roughly divided into 6 layers from lateral to medial. The lateral cerebral ventricles at the metamorphosis phase were smaller than those at the adult phase, and there were no clear borderlines between the primordial pallium and the primordial hippocampus, or between the primordial pallium and the primordial piriform area. Moreover, the cells in the primordial piriform area were more closely distributed than those in the primordial hippocampus or the primordial pallium. Compared with those at the adult phase, cells in nucleuses at the metamorphosis phase were larger in number and more closely distributed.
CONCLUSION
The telencephalon of Hynobius leehii at the metamorphosis phase has generally formed the adult structure. However, it is still at a transition state of differentiation to maturity during the development of Hynobius leehii.
目的
研究中国林蛙端脑的发育特征，丰富比较神经生物学和两栖动物神经系统发育的研究数据。
方法
采用 HE 染色和尼氏染色方法，研究中国林蛙变态期和成年期端脑的组织学结构，探讨端脑的发育阶段。
结果
嗅球从外侧到内侧可大致分为 6 层。变态期侧脑室小于成年期，原始大脑皮层与原始海马、原始梨状区之间无明显界限，原始梨状区的细胞比原始海马或原始大脑皮层更紧密地分布。与成年期相比，变态期核内细胞数量更多，分布更紧密。
结论
中国林蛙变态期的端脑已基本形成成年结构，但在其发育过程中仍处于分化成熟的过渡状态。
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