Vol 59, No 4 (2000)
Original article
Published online: 2000-08-02
Substance-P of neural cells in human trigeminal ganglion
Folia Morphol 2000;59(4):327-331.
Abstract
Expression of substance-P in human neurons of trigeminal ganglia has been investigated by immunohistochemistry and morphometry. These neurons constituted 12.8% to 32.6% of the total neuronal population in the trigeminal ganglia. Substance-P positive granulations were concentrated around the nucleus, distributed focally in neuroplasm or dispersed over the neuroplasm. Morphometric analysis has indicated the presence of three populations of SP-positive cells: small, medium-sized and large.
The results suggest a functional differentiation on the level of the first neurons of the afferent path of the stomatognatic system. Substance-P is likely to play a role in the transmission not only of nociceptive impulses but also of those involved in the mechano-functional stimulation of system activities.
The results suggest a functional differentiation on the level of the first neurons of the afferent path of the stomatognatic system. Substance-P is likely to play a role in the transmission not only of nociceptive impulses but also of those involved in the mechano-functional stimulation of system activities.
Keywords: substance-Phuman trigeminal ganglianeuronsimmunohistochemistrymorphometry
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