Altered axonal excitability properties in facial palsy.
Muscle Nerve
; 57(2): 268-272, 2018 02.
Article
in En
| MEDLINE
| ID: mdl-28457007
ABSTRACT
INTRODUCTION:
Axonal excitability measures give insight into the biophysical properties of peripheral nerve axons. In this study we applied these techniques to the study of facial palsy.METHODS:
Thirty patients with established facial palsy due to unresolved Bell's palsy or herpes zoster (>6 months duration), tumor invasion of the facial nerve, or traumatic facial nerve injury were assessed using facial nerve excitability techniques.RESULTS:
Full recordings were obtained in 23 patients (15 unrecovered Bell's palsy or herpes zoster, 5 trauma, 3 tumor-related). Compared with normal controls, the facial palsy group demonstrated changes in stimulus response properties, threshold electrotonus, refractoriness, superexcitability, and I/V slope. Depolarizing threshold electrotonus distinguished between viral and non-viral etiologies on subgroup analysis.DISCUSSION:
In this cross-sectional study, established facial palsy demonstrated findings similar to those seen in studies of regenerated axons. The improved understanding of underlying axonal characteristics offered by the technique may guide future treatment. Muscle Nerve 57 268-272, 2018.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Axons
/
Facial Paralysis
Type of study:
Observational_studies
/
Prevalence_studies
/
Qualitative_research
/
Risk_factors_studies
Limits:
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
Muscle Nerve
Year:
2018
Document type:
Article
Affiliation country: