Facilitation of adrenal sympathetic efferent nerve activity induced by mechanical stimulation of teeth in the rat.
The effects of afferent signals from the periodontal mechanoreceptors and muscle spindles of jaw-closing muscles on adrenal nerve activity were examined using anesthetized rats. The adrenal nerve activity increased with pressure stimulation of the teeth and by biting a wooden stick. However, after denervation of the periodontal ligament, the facilitation due to the stick-biting was not observed. These results indicate that periodontal afferents facilitate adrenal nerve activity.
Ikeda
K
K
Department of Removable Prosthodontics, Niigata University School of Dentistry, Japan. ikedak@dent.niigata-u.ac.jp
Shingai
T
T
Yamada
Y
Y
Kohno
S
S
D000311:Adrenal Glands / Q000294:innervation*; D000818:Animals; D002540:Cerebral Cortex / Q000502:physiology; D003714:Denervation; D004525:Efferent Pathways / Q000502:physiology; D004558:Electric Stimulation; D007568:Jaw / Q000502:physiology; D008297:Male; D009068:Movement / Q000502:physiology; D010513:Periodontal Ligament / Q000294:innervation; D010812:Physical Stimulation; D051381:Rats; D017208:Rats, Wistar; D011930:Reaction Time / Q000502:physiology; D013564:Sympathetic Nervous System / Q000502:physiology*; D014070:Tooth / Q000502:physiology*