Sensor-based gait analysis in the premotor stage of LRRK2 G2019S-associated Parkinson's disease. (May 2022)

• Record Type: Journal Article
• Authors: Sánchez-Rodríguez, Antonio; Tirnauca, Cristina; Salas-Gómez, Diana; Fernández-Gorgojo, Mario; Martínez-Rodríguez, Isabel; Sierra, María; González-Aramburu, Isabel; Stan, Diana; Gutierrez-González, Angela; Meissner, Johannes M.; Andrés-Pacheco, Javier; Rivera-Sánchez, María; Sánchez-Peláez, María Victoria; Sánchez-Juan, Pascual; Infante, Jon
• Is Part Of: Parkinsonism & related disorders. Volume 98(2022)
• Page Start: 21
• Page End: 26
• Publication Date: 2022-05
• Subjects: Parkinson's disease -- LRRK2 -- Gait -- Sensors -- Asymptomatic carriers -- G2019S mutation -- Neural network; Parkinson's disease -- Periodicals; Movement disorders -- Periodicals; Movement Disorders -- Periodicals; Nerve Degeneration -- Periodicals; Nervous System Diseases -- Periodicals; Parkinson Disease -- Periodicals; Tremor -- Periodicals; Parkinson, Maladie de -- Périodiques; Parkinson's disease; 616.833
• DOI: 10.1016/j.parkreldis.2022.03.020
• Languages: English
• ISSNs: 1353-8020

Abstract

Abstract: Introduction: There is a need for biomarkers to monitor the earliest phases of Parkinson's disease (PD), especially in premotor stages. Here, we studied whether there are early gait alterations in carriers of the G2019S mutation of LRRK2 that can be detected by means of an inertial sensor system. Methods: Twenty-one idiopathic PD patients, 20 LRRK2 -G2019S PD, 27 asymptomatic carriers of LRRK2 -G2019S mutation (AsG2019S) and 36 controls walked equipped with 16 lightweight inertial sensors in three different experiments: i/normal gait, ii/fast gait and iii/dual-task gait. In the AsG2019S group, DaT-SPECT ( 123 I-ioflupane) with semi-quantitative analysis was carried out. Motor and cognitive performance were evaluated using MDS-UPDRS-III and MoCA scales. We employed neural network techniques to classify individuals based on their walking patterns. Results: PD patients and controls showed differences in speed, stride length and arm swing amplitude, variability and asymmetry in all three tasks (p < 0.01). In the AsG2019S group, the only differences were detected during fast walking, with greater step time on the non-dominant side (p < 0.05), lower step/stride time variability (p < 0.01) and lower step time asymmetry (p < 0.01). DaT uptake showed a significant correlation with step time during fast walking on the non-dominant side (r = −0.52; p < 0.01). The neural network was able to differentiate between AsG2019S and healthy controls with an accuracy rate of 82.5%. Conclusion: Our sensor-based analysis did not detect substantial and robust changes in the gait of LRRK2-G2019S asymptomatic mutation carriers. Nonetheless, step or stride time during fast walking, supported by the observed correlation with striatal DaT binding deserves consideration as a potential biomarker in future studies. Highlights: Gait analysis with inertial sensors detects changes in the premotor stages of LRRK2 -PD. Step time during fast gait correlates with striatal DaT binding in asymptomatic carriers of the LRRK2 -G2019S mutation. Artificial intelligence tools trained with gait variables show high potential accuracy as diagnostic biomarkers.