Axonal Degeneration of the Vagus Nerve in Parkinson's Disease-A High-Resolution Ultrasound Study

Overview

Journal Front Neurol

Specialty Neurology

Date 2018 Nov 29

PMID 30483212

Citations 20

Authors

Johann Otto Pelz

Elena Belau

Christopher Fricke

Joseph Classen

David Weise

Affiliations

Soon will be listed here.

Abstract

Recent histopathological studies revealed degeneration of the dorsal motor nucleus early in the course of Parkinson's disease (PD). Degeneration of the vagus nerve (VN) axons following neurodegeneration of brainstem vagal nuclei should be detectable by high-resolution ultrasound (HRUS) as a thinning of the VNs. We measured both VNs cross-sectional area (VN-CSA) of 35 patients with PD and 35 age- and sex-matched healthy controls at the level of the thyroid gland using HRUS. On both sides, the VN-CSA was significantly smaller in PD patients than in controls (right: 2.1 ± 0.4 vs. 2.3 ± 0.5 mm2, left 1.5 ± 0.4 vs. 1.8 ± 0.4 mm2; both < 0.05). There was no correlation between the right or left VN-CSA and age, the Hoehn & Yahr stage, disease duration, the motor part of the Unified Parkinson's Disease Rating Scale score, the Montreal Cognitive Assessment score, or the Non-motor Symptoms Questionnaire, and Scale for Parkinson's disease score including its gastrointestinal domain. These findings provide evidencethat atrophy of the VNs in PD patients can be detected by HRUS.

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