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Adrenergic vessel innervation in the rat incisor pulp
Author(s) -
LARSSON PÄRANDERS,
LINDE ANDERS
Publication year - 1971
Publication title -
european journal of oral sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.802
H-Index - 93
eISSN - 1600-0722
pISSN - 0909-8836
DOI - 10.1111/j.1600-0722.1971.tb01987.x
Subject(s) - adrenergic , pulp (tooth) , adrenergic neurons , dentinogenesis , reserpine , sympathectomy , medicine , endocrinology , chemistry , dentin , incisor , odontoblast , anatomy , dentistry , receptor
– The presence of adrenergic axons and nerve terminals has been demonstrated in the rat incisor pulp by means of the histochemical fluorescence method of H illarp & F alck . Adrenergic, nerve terminals in close connection with blood vessel walls were observed at all levels in this tissue, although there was an excess in the apical region. Administration of a MAO‐inhibitor and noradrenaline increased the fluorescence intensity markedly, while reserpine and sympathectomy could abolish the fluorescence. The findings suggest the presence of an adrenergic regulation of blood flow in the rat incisor pulp and consequently an indirect nervous influence on the dentinogenesis. The possible relation between a suggested circadian rhythm in the activity of peripheral adrenergic neurons and the incremental pattern of the dentin is discussed.