An HRP study of the distribution of primary afferent neurons innervating the buccal stretch receptor in rats.
Retrograde transport of horseradish peroxidase conjugated with wheat germ agglutinin (WGA-HRP) was used to observe the ganglionic origin of primary afferent neurons innervating the buccal stretch receptor (BSR) in the rat. WGA-HRP was applied to the proximal stump of the severed nerve branch innervating the BSR. HRP-labeled cell bodies were observed only in posterolateral portion of the ipsilateral trigeminal ganglion. The diameter of these cell bodies was 25.5-52.5 microns, of which 54.9% was in the range of 31-40 microns and 36.3% larger than 41 microns. Taken together with its ontogenetic origin, the BSR is suggested to have differentiated from the mechanoreceptors in the oral mucosa or the fascia of masticatory muscles.
Yamamoto
T
T
Department of Physiology, Tokyo Dental College, Chiba, Japan.
Hirayama
A
A
Ozono
S
S
D000818:Animals; D002610:Cheek / Q000294:innervation; D003584:Cytological Techniques; D006735:Horseradish Peroxidase; D007202:Indicators and Reagents; D008297:Male; D008465:Mechanoreceptors / Q000166:cytology*; D009475:Neurons, Afferent / Q000166:cytology*; D051381:Rats; D017208:Rats, Wistar; D012668:Trigeminal Ganglion / Q000166:cytology
D007202:Indicators and Reagents; D006735:Horseradish Peroxidase