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首页> 外文期刊>Cell and Tissue Research >Sympathetic and sensory innervation of small intensely fluorescent (SIF) cells in rat superior cervical ganglion
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Sympathetic and sensory innervation of small intensely fluorescent (SIF) cells in rat superior cervical ganglion

机译：大鼠上颈神经节中小强度荧光（SIF）细胞的交感和感觉神经支配

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摘要

The sympathetic ganglion contains small intensely fluorescent (SIF) cells derived from the neural crest. We morphologically characterize SIF cells and focus on their relationship with ganglionic cells, preganglionic nerve fibers and sensory nerve endings. SIF cells stained intensely for tyrosine hydroxylase (TH), with a few cells also being immunoreactive for dopamine beta-hydroxylase (DBH). Vesicular acetylcholine transporter (VAChT)-immunoreactive puncta were distributed around some clusters of SIF cells, whereas some SIF cells closely abutted DBH-immunoreactive ganglionic cells. SIF cells contained bassoon-immunoreactive products beneath the cell membrane at the attachments and on opposite sites to the ganglionic cells. Ganglion neurons and SIF cells were immunoreactive to dopamine D2 receptors. Immunohistochemistry for P2X3 revealed ramified nerve endings with P2X3 immunoreactivity around SIF cells. Triple-labeling for P2X3, TH and VAChT allowed the classification of SIF cells into three types based on their innervation: (1) with only VAChT-immunoreactive puncta, (2) with only P2X3-immunoreactive nerve endings, (3) with both P2X3-immunoreactive nerve endings and VAChT-immunoreactive puncta. The results of retrograde tracing with fast blue dye indicated that most of these nerve endings originated from the petrosal ganglion. Thus, SIF cells in the superior cervical ganglion are innervated by preganglionic fibers and glossopharyngeal sensory nerve endings and can be classified into three types. SIF cells might modulate sympathetic activity in the superior cervical ganglion.
机译：交感神经节包含源自神经c的小的强荧光（SIF）细胞。我们在形态上表征SIF细胞，并专注于它们与神经节细胞，神经节前神经纤维和感觉神经末梢的关系。 SIF细胞对酪氨酸羟化酶（TH）的染色强烈，少数细胞对多巴胺β-羟化酶（DBH）也具有免疫反应性。囊泡乙酰胆碱转运蛋白（VAChT）免疫反应点分布在一些SIF细胞簇周围，而一些SIF细胞紧靠DBH免疫反应神经节细胞。 SIF细胞在细胞膜下方，附着处和神经节细胞的相对位置上均含有大肠免疫反应产物。神经节神经元和SIF细胞对多巴胺D2受体具有免疫反应性。 P2X3的免疫组织化学显示，SIF细胞周围的神经末梢具有P2X3免疫反应性。通过对P2X3，TH和VAChT进行三重标记，可以根据神经支配将SIF细胞分为三种类型：（1）仅具有VAChT免疫反应性小突点;（2）仅具有P2X3免疫反应性神经末梢;（3）同时具有P2X3 -免疫反应性神经末梢和VAChT-免疫反应性泪点。用速溶蓝色染料进行逆行示踪的结果表明，这些神经末梢中的大多数起源于石油神经节。因此，上颈神经节中的SIF细胞由神经节前纤维和舌咽感觉神经末梢支配，并且可以分为三种类型。 SIF细胞可能会调节上颈神经节的交感神经活动。

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