title: Autologous nerve implantation into denervated monkey skin promotes regeneration of Meissner's corpuscle.
abstract: BACKGROUND
  The aim of this study was to observe the effects of autologous nerve implantation into the denervated finger flap on the regression and regeneration of sensory nerve endings and Meissner's corpuscles.
  
  
  METHODS
  Bilateral nerves of fingers were separated: one was removed and the other was implanted into the denervated finger in the implantation group. In the non-implantation group, both nerves were removed. The ventral skin of fingers was collected for immunohistochemistry and electron microscopy 3, 6, 9 and 12 months after surgery.
  
  
  RESULTS
  The nerve endings in the Meissner's corpuscles began to degenerate 3 months after denervation. The elementary structure of Meissner's corpuscles was not significantly altered. Nerve fibers were present around the Meissner's corpuscles, accompanied by growing into its inward. The axons in the denervated nerve disappeared and the Meissner's corpuscles began to atrophy at month 6. More regenerated nerve fibers were observed after nerve implantation, including intensive and thick fibers, accompanied by reinnervation of Meissner's corpuscles. More nerve fibers and a higher proportion of myelinated nerve fibers were noted at month 9 in the implantation group, and the reinnervation was present in the majority of Meissner's corpuscles. Naive myelinated nerve fibers appeared at the caudal end of Meissner's corpuscles. The nerve fibers in the Meissner's corpuscles increased to the normal level at 12 months after nerve implantation.
  
  
  CONCLUSIONS
  The implanted nerve regenerated a large amount of free nerve endings, which helped to regenerate simple Meissner's corpuscles via governing previously degenerated corpuscles.<br />
authors: Department of Plastic Surgery, Southwest Hospital, 3rd Military Medical University, Chongqing, China.
authors: Zhen-Xiang
authors: ZX
authors: Wang
authors: Dong-Lin
authors: DL
authors: Luo
authors: Yu
authors: Y
authors: Pan
authors: Liang
authors: L
authors: Chen
authors: Zhe
authors: Z
authors: Li
authors: Ling
authors: L
authors: Tao
authors: Xia
authors: X
authors: Dai
authors: Yue-Jun
authors: YJ
authors: Li
authors: Xue-Yong
authors: XY
authors: Li
authors: Shi-Rong
authors: SR
authors: Li
mesh_terms: D000818:Animals; D003714:Denervation; D055724:Electrophysiological Phenomena; D000882:Haplorhini; D007150:Immunohistochemistry; D008465:Mechanoreceptors / Q000502:physiology* / Q000648:ultrastructure; D009412:Nerve Fibers / Q000637:transplantation*; D009416:Nerve Regeneration / Q000502:physiology*; D019919:Prosthesis Implantation; D012867:Skin / Q000294:innervation*; D014182:Transplantation, Autologous