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@ARTICLE{Breit:258786,
author = {Breit, Sorin and Milosevic, Luka and Naros, Georgios and
Cebi, Idil and Weiss, Daniel and Gharabaghi, Alireza},
title = {{S}tructural-{F}unctional {C}orrelates of {R}esponse to
{P}edunculopontine {S}timulation in a {R}andomized
{C}linical {T}rial for {A}xial {S}ymptoms of {P}arkinson's
{D}isease.},
journal = {Journal of Parkinson's Disease},
volume = {13},
number = {4},
issn = {1877-7171},
address = {Amsterdam},
publisher = {IOS Press},
reportid = {DZNE-2023-00680},
pages = {563 - 573},
year = {2023},
abstract = {Axial symptoms of Parkinson's disease (PD) can be
debilitating and are often refractory to conventional
therapies such as dopamine replacement therapy and deep
brain stimulation (DBS) of the subthalamic nuclei
(STN).Evaluate the efficacy of bilateral DBS of the
pedunculopontine nucleus area (PPNa) and investigate
structural and physiological correlates of clinical
response.A randomized, double-blind, cross-over clinical
trial was employed to evaluate the efficacy of bilateral
PPNa-DBS on axial symptoms. Lead positions and neuronal
activity were evaluated with respect to clinical response.
Connectomic cortical activation profiles were generated
based on the volumes of tissue activated.PPNa-DBS modestly
improved (p = 0.057) axial symptoms in the medication-off
condition, with greatest positive effects on gait symptoms
(p = 0.027). Electrode placements towards the anterior
commissure (ρ= 0.912; p = 0.011) or foramen caecum (ρ=
0.853; p = 0.031), near the $50\%$ mark of the
ponto-mesencephalic junction, yielded better therapeutic
responses. Recording trajectories of patients with better
therapeutic responses (i.e., more anterior electrode
placements) had neurons with lower firing-rates (p = 0.003)
and higher burst indexes (p = 0.007). Structural connectomic
profiles implicated activation of fibers of the posterior
parietal lobule which is involved in orienting behavior and
locomotion.Bilateral PPNa-DBS influenced gait symptoms in
patients with PD. Anatomical and physiological information
may aid in localization of a favorable stimulation target.},
keywords = {Humans / Parkinson Disease: therapy / Parkinson Disease:
drug therapy / Deep Brain Stimulation: methods / Subthalamic
Nucleus / Pedunculopontine Tegmental Nucleus / Gait /
Parkinson’s disease (Other) / Deep brain stimulation
(Other) / Parkinson’s disease (Other) / pedunculopontine
nucleus (Other)},
cin = {AG Gasser},
ddc = {610},
cid = {I:(DE-2719)1210000},
pnm = {353 - Clinical and Health Care Research (POF4-353)},
pid = {G:(DE-HGF)POF4-353},
typ = {PUB:(DE-HGF)16},
pmc = {pmc:PMC10357146},
pubmed = {pmid:37092235},
doi = {10.3233/JPD-225031},
url = {https://pub.dzne.de/record/258786},
}