Characterization of dermal skin innervation in fibromyalgia syndrome


Autoři: Dimitar Evdokimov aff001;  Philine Dinkel aff001;  Johanna Frank aff001;  Claudia Sommer aff001;  Nurcan Üçeyler aff001
Působiště autorů: Department of Neurology, University of Würzburg, Würzburg, Germany aff001
Vyšlo v časopise: PLoS ONE 15(1)
Kategorie: Research Article
doi: 10.1371/journal.pone.0227674

Souhrn

Introduction

We characterized dermal innervation in patients with fibromyalgia syndrome (FMS) as potential contribution to small fiber pathology.

Methods

Skin biopsies of the calf were collected (86 FMS patients, 35 healthy controls). Skin was immunoreacted with antibodies against protein gene product 9.5, calcitonine gene-related peptide, substance P, CD31, and neurofilament 200 for small fiber subtypes. We assessed two skin sections per patient; on each skin section, two dermal areas (150 x 700 μm each) were investigated for dermal nerve fiber length (DNFL).

Results

In FMS patients we found reduced DNFL of fibers with vessel contact compared to healthy controls (p<0.05). There were no differences for the other nerve fiber subtypes.

Discussion

We found less dermal nerve fibers in contact with blood vessels in FMS patients than in controls. The pathophysiological relevance of this finding is unclear, but we suggest the possibility of a relationship with impaired thermal tolerance commonly reported by FMS patients.

Klíčová slova:

Biopsy – Blood vessels – Epidermis – Fibromyalgia – Immunohistochemistry techniques – Nerve fibers – Myelinated nerve fibers – Nerve conduction study


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