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  • Title: Immunohistochemical localization of calbindin D28k in the periodontal Ruffini endings of rat incisors.
    Author: Ochi K, Wakisaka S, Youn SH, Hanada K, Maeda T.
    Journal: Neurosci Lett; 1997 Jun 13; 228(3):195-8. PubMed ID: 9218641.
    Abstract:
    It was examined whether calbindin D28k (CB) might be located in the rat incisor periodontal Ruffini ending, an essential mechanoreceptor in periodontal ligament, by light- and electron-microscopic immunohistochemistry. Some thick nerve fibers showing CB-like immunoreactivity (LI) entered the lingual half of the periodontal ligament of the incisor and showed the dendritic terminal arborization. Electron-dense immunoreaction products indicating CB-LI were distributed diffusely in axoplasm of the axon terminals, no mitochondria, however, were not labeled. Neither cell bodies nor cytoplasmic extensions of the terminal Schwann cells exhibited CB-LI. CB was presumed to be involved in the maintenance of Ca2+ homeostasis in the mechano-electric transduction in mechanoreceptors in the periodontal ligament.
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