Myelinated nerve endings in human skin

Research output: Contribution to journalArticle

93 Citations (Scopus)

Abstract

We used immunohistochemical techniques and confocal microscopy to study the morphometry of myelinated nerve endings in glabrous and hairy skin. A total of 30 healthy volunteers took part in this study designed to assess the possibility of obtaining reliable information on myelinated fibers using samples of hairy skin and to determine whether differences exist between myelinated terminations from different sites. We obtained consistent information on cutaneous myelinated terminations using hairy as well as glabrous skin samples. Myelinated endings from hairy and glabrous skin differ in density and distribution. However, from a comparison of our findings with data from nerve biopsy studies, we conclude that all cutaneous myelinated terminations are thinner terminal branches of large myelinated Aβ fibers, whereas cutaneous terminations of small myelinated Aδ fibers lose their myelin before entering the dermis and become indistinguishable from C-fiber terminations. The classic criteria, based on fiber size, used to distinguish myelinated fiber subgroups in sensory nerves are therefore not suitable for identifying myelinated terminations in the skin.

Original languageEnglish
Pages (from-to)767-775
Number of pages9
JournalMuscle and Nerve
Volume35
Issue number6
DOIs
Publication statusPublished - Jun 2007

Fingerprint

Nerve Endings
Skin
Myelinated Nerve Fibers
Unmyelinated Nerve Fibers
Dermis
Myelin Sheath
Confocal Microscopy
Healthy Volunteers
Biopsy

Keywords

  • Aβ fibers
  • Aδ fibers
  • Morphometry
  • Myelinated fibers
  • Skin biopsy

ASJC Scopus subject areas

  • Clinical Neurology
  • Neuroscience(all)

Cite this

Myelinated nerve endings in human skin. / Provitera, Vincenzo; Nolano, Maria; Pagano, Angela; Caporaso, Giuseppe; Stancanelli, Annamaria; Santoro, Lucio.

In: Muscle and Nerve, Vol. 35, No. 6, 06.2007, p. 767-775.

Research output: Contribution to journalArticle

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AU - Stancanelli, Annamaria

AU - Santoro, Lucio

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AB - We used immunohistochemical techniques and confocal microscopy to study the morphometry of myelinated nerve endings in glabrous and hairy skin. A total of 30 healthy volunteers took part in this study designed to assess the possibility of obtaining reliable information on myelinated fibers using samples of hairy skin and to determine whether differences exist between myelinated terminations from different sites. We obtained consistent information on cutaneous myelinated terminations using hairy as well as glabrous skin samples. Myelinated endings from hairy and glabrous skin differ in density and distribution. However, from a comparison of our findings with data from nerve biopsy studies, we conclude that all cutaneous myelinated terminations are thinner terminal branches of large myelinated Aβ fibers, whereas cutaneous terminations of small myelinated Aδ fibers lose their myelin before entering the dermis and become indistinguishable from C-fiber terminations. The classic criteria, based on fiber size, used to distinguish myelinated fiber subgroups in sensory nerves are therefore not suitable for identifying myelinated terminations in the skin.

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