三叉神经躯体感觉纤维的中枢投射  

Central Projection of Trigeminal Nerve Somatosensory Fibers

作　　者：冷冰[1] 薛昊罡[1] LENG Bing;XUE Haogang(Affiliated Hospital of Beihua University,Jilin 132011,China)

机构地区：[1]北华大学附属医院,吉林吉林132011

出　　处：《北华大学学报（自然科学版）》2023年第1期64-67,共4页Journal of Beihua University（Natural Science）

基　　金：吉林省科技发展计划项目(200905123)。

摘　　要：目的应用示踪物标记法验证硬骨鱼三叉神经躯体感觉纤维的中枢分布.方法将12条10~15 cm的罗非鱼作为本研究的实验动物,通过尼氏染色确定罗非鱼三叉神经感觉核的细胞形态和感觉核的构造.将示踪剂生物胞素注射到罗非鱼的三叉神经根,观察三叉神经一级躯体感觉终末纤维在中枢分布的标记形式.结果将示踪剂注入非鱼三叉神经根后,标记的三叉神经感觉纤维终末中枢分布在同侧三叉神经感觉核、三叉神经下行核、内索核以及面神经叶.结论硬骨鱼三叉神经一级躯体感觉纤维的中枢投射与哺乳动物、鸟类、爬行动物及两栖动物等脊椎动物极其相似.Objective The central distribution of trigeminal nerve somatosensory fibers were verified by the method of tract-tracing in a teleost,tilapia(Oreochromis niloticus).Method Twelve tilapia(10 cm to 15 cm)were used as experimental animals in this study.The cytoarchitecture and organization of the trigeminal sensory nucleus in the tilapia were determined by Nissl staining.The labeling patterns of primary trigeminal nerve somatosensory fibers in the central distribution were observed by biocytin injection into the trigeminal nerve root.Results After the tracer was injected into the trigeminal nerve root of tilapia,the labeled trigeminal sensory fiber terminal were centered in the ipsilateral trigeminal sensory nucleus,the descending trigeminal nucleus,the medial funicular nucleus and the facial lobe.Conclusion The central projection of the primary trigeminal somatosensory fibers in teleost fish are very similar to those in vertebrates such as mammals,birds,reptiles and amphibians.

关 键 词：三叉神经 躯体感觉 中枢分布 罗非鱼 

分 类 号：R6[医药卫生—外科学]