Source:Brain Research Bulletin
Author(s): Judit Málly, Trevor W. Stone, Gabriella Sinkó, Noémi Geisz, Elek Dinya
BackgroundTranscranial magnetic stimulation (rTMS) may influence the progression of PD compared with levodopa. The long term mind modification effect of repeated rTMS and tDCS is not known, nor are the predictors for the effect of NBS.Objective/hypothesisWe hypothesized that the regularly repeated rTMS would decrease the development of PD. Later, the treatment protocol was completed with transcranial direct current stimulation (tDCS), supposing that there is an add-on effect. NBS may differently influence motor and mental aspects of the disease.MethodsThirty patients with PD were followed for 3.5 years in an open study. They were stimulated with 1 Hz rTMS every half year for 1.5 years. After that the tDCS was add to the stimulation over both sides of the cerebellum for the next 2 years. UPDRS, Trail Making Test and dual tests were used. The linear regression lines of score systems and percentage of yearly increment were counted, analyzed by ANOVA.ResultsThe yearly progression rate for UPDRS total was 2 % for 3.5 years, 0.6 % ≤ 65 years, 3.6 % > 65 years. The increment was around zero during the rTMS + tDCS stimulations in patients ≤ 65 years. The slope of the equation showed the same tendency. The individual sensitivity to the NBS was high. tTMS and tDCS >65 yrs improved pathological executive function (p < 0.0001).ConclusionThe motor ability in PD was maintained at the same level in patients ≤ 65 years with NBS for the 3.5 years in contrast to patients > 65 years. The cognitive function of patients >65 yrs was favorable influenced by rTMS and tDCS. Age is the main predictor of the effect of NBS. rTMS and tDCS can slow the progression of PD without any side effects but in an age-dependent way.
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