The Degree of Cardiovascular Autonomic Dysfunction is not Different in GBA-Related and Idiopathic Parkinson’s Disease Patients: A Case-Control Instrumental Evaluation

Author:

Giannini Giulia12,Minardi Raffaella1,Barletta Giorgio2,Cani Ilaria12,Cecere Annagrazia1,Baldelli Luca12,Fiorentino Alessia1,Guaraldi Pietro1,Sambati Luisa1,Capellari Sabina12,Cortelli Pietro12,Carelli Valerio12,Calandra-Buonaura Giovanna12

Affiliation:

1. IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy

2. Department of Biomedical and NeuroMotor Sciences (DiBiNeM), Alma Mater Studiorum, University of Bologna, Bologna, Italy

Abstract

Background: Increased prevalence of cardiovascular autonomic failure might play a key role on Parkinson’s disease (PD) progression of glucocerebrosidase gene (GBA)-mutated patients, determining a malignant phenotype of disease in these patients. Objective: To objectively characterize, for the first time, the cardiovascular autonomic profile of GBA-mutated patients compared to idiopathic PD patients by means of cardiovascular reflex tests (CRTs). Methods: This is a case-control (1 : 2) study on PD patients belonging to well-characterized prospective cohorts. For each PD patient carrying GBA variants, two idiopathic PD patients, matched for sex and disease duration at CRTs, were selected. Patients recruited in these cohorts underwent a complete clinical and instrumental evaluation including specific autonomic questionnaires, CRTs and extensive genetic analysis. Results: A total of 23 GBA-PD patients (19 males, disease duration 7.7 years) were included and matched with 46 non-mutated PD controls. GBA-mutated patients were younger than controls (59.9±8.1 vs. 64.3±7.2 years, p = 0.0257) and showed a more severe phenotype. Despite GBA-mutated patients reported more frequently symptoms suggestive of orthostatic hypotension (OH) than non-mutated patients (39.1% vs 6.5%, p = 0.001), the degree of cardiovascular autonomic dysfunction, when instrumentally assessed, did not differ between the two groups, showing the same prevalence of neurogenic OH, delayed OH and cardiovascular reflex impairment (pathological Valsalva maneuver). Conclusion: GBA-PD patients did not show different instrumental cardiovascular autonomic pattern than non-mutated PD. Our findings suggested that symptoms suggestive of OH should be promptly investigated by clinicians to confirm their nature and improve patient care and management.

Publisher

IOS Press

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