By Dr. Ch. Chouchkov (auth.)
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Additional resources for Cutaneous Receptors
Lpu. : Nervenregeneration und verwandte Innervationsprobleme. Ergebn. d. Physio!. : Nerve endings, motor and sensory. In: Cytology and Cellular Pathology of the Nervous System. Penfield, W. ), New York: Hoerber, 1932, pp. : Die Apparate des Gefiihlsinnes der nackten und behaarten Siiugetierhaut, mit Beriicksichtigung des Menschen. Anat. Anz. 42, 193-205 (1912) Breathnach, A. : Ultrastructural observations on Merkel cells in human fetal skin. 1. Anat. , Horch, K. : Specific regeneration of cutaneous fibres in the cat.
Our results allow us to state definitively that after crushing, the complete reinnervation of receptors at ultrastructural level takes place. Moreover, reinnervation and regeneration are realized on the basis of persisting and proliferating perineural capsule cells, though the guiding mechanism remains unclear. Also, the phenomenon that after transection fewer reinnervated receptors are encountered, is not understood. , 1970) still remains open to speculation. Another conceivable problem is the establishement of completely new receptors.
Historical Survey The first study on denervated receptors was carried out by Meissner (1855), who proved that the corpuscles described by Wagner and Meissner (1852), change their structure after section of the afferent nerve fibres. The most prominent classic descriptions (Tamura, 1922; Boeke, 1922; Klein, 1932; Dijkstra, 1933) revealed not only the changes in the nerve fibres but also the relationships between receptor structures and their fate during denervation time. Although the opinions concerning the time of receptor preservation were different, most of the authors have concluded that nerve degeneration was followed by a reduction of the inner core and an augmentation in the size of the capsule (Sasybin, 1930; Dijkstra, 1933; Klein, 1932; Quilliam and Armstrong, 1963).