Direct projections from the medial preoptic area to spinally-projecting neurons in Barrington's nucleus: an electron microscope study in the rat

被引:21
作者
Ding, YQ [1 ]
Wang, D
Xu, JQ
Ju, G
机构
[1] Fourth Mil Med Univ, Inst Neurosci, Xian 710032, Peoples R China
[2] Fourth Mil Med Univ, Dept Anat, Xian 710032, Peoples R China
关键词
medial preoptic area; Barrington's nucleus; micturition; double labeling; electron microscope; rat;
D O I
10.1016/S0304-3940(99)00562-5
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Direct projections from the medial preoptic area (MPO) to the pontine micturition center neurons directly projecting to the lumbosacral spinal cord were revealed electron microscopically in the rat by a double labeling method. Biotinylated dextran amine (BDA) was injected into the MPO and horseradish peroxidase (HRP) was injected into the lumbosacral cord segments. At light microscopic revel, BDA-labeled presumptive axon terminals completely overlapped with HRP-labeled neurons in Barrington's nucleus. Electron microscopic observation showed that some BDA-labeled axon terminals made synaptic contacts with dendrites of HRP-labeled neurons in Barrington's nucleus. The present results indicated that the MPO may be involved in the modulation of the pontine micturition reflex in the rat. (C) 1999 Elsevier Science Ireland Ltd. All rights reserved.
引用
收藏
页码:175 / 178
页数:4
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