摘要
为研究三叉神经节神经元向三叉神经脊束核尾侧亚核（ＶＣ）和孤束核（ＮＴＳ）的分支投射，用荧光素逆行追踪双标记方法，Ｆａｓｔｂｌｕｅ（ＦＢ）和Ｎｕｃｌｅａｒｙｅｌｏｗ（ＮＹ）分别注射入三叉神经脊束核尾侧亚核和孤束核后，荧光显微镜（３６０ｎｍ激发波长）下可见三叉神经节内的多种逆行标记神经元。ＦＢ显示明亮的蓝色标记胞浆，而ＮＹ标记则为黄绿色的圆形胞核。虽大多数神经元为单标记，但部分也呈黄色胞核，蓝色胞浆的双标记细胞。双标记细胞多为直径３０μｍ以下的中、小型，鲜见大型细胞。分支投射神经元可能扩散传递口、舌伤害性痛觉信息并在ＶＣ和ＮＴＳ内与其他来源的内脏、躯体感觉传入信息相互影响。
The technique of double labeled fluorescent tracing was used to determine whether the projections to the nucleus of the solitary tract(NTS) and caudal subnucleus of spinal trigeminal nucleus(VC)from the neurons in the trigeminal ganglion(VG)via axon collaterals.After Fast blue(FB)and Nuclear yellow(NY)were injected into VC and NTS,respectively,varied labeled neurons in VG were found under the fluorescence microscope(360nm excitation wavelength).FB displayed a blue fluorescent cytoplasm and NY appeared gold yellow fluorescent nuclei.Although majority of the neurons were single labeled with either FB or NY,some double labeled neurons showing both yellow green nuclei and blue cytoplasm were observed.Most double labeled neurons were small and medium in size whose diameters were below 30μm.The interaction between the nociceptive information of oro lingual mucosa,transmitted diffusively via the divergent axon collaterals of the neurons in VG,and the visceral and somatic sensations from other sources might take place in VC and NTS.
出处
《解剖学报》
CAS
CSCD
北大核心
1998年第3期242-245,I005,共4页
Acta Anatomica Sinica
关键词
三叉神经节
VSP
NTS
分支投射
大鼠
trigeminal ganglion
caudal subnucleus of spinal trigeminal nucleus
nucleus of solitary tract
fluorescence
retrogrades transport
divergent projection
rat
