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  • Title: Comparison of neuropathology in Parkinson's disease subjects with and without deep brain stimulation.
    Author: Pal GD, Ouyang B, Serrano G, Shill HA, Goetz C, Stebbins G, Metman LV, Driver-Dunckley E, Mehta SH, Caviness JN, Sabbagh MN, Adler CH, Beach TG, Arizona Study of Aging Neurodegenerative Disorders.
    Journal: Mov Disord; 2017 Feb; 32(2):274-277. PubMed ID: 27911008.
    Abstract:
    BACKGROUND: The aim of this postmortem study was to compare, in Parkinson's disease subjects with and without bilateral subthalamic nucleus deep brain stimulation (STN-DBS), the loss of pigmented neurons within the substantia nigra and pathological alpha-synuclein density within the SN and other brain regions. METHODS: PD subjects were identified from the Arizona Study of Aging and Neurodegenerative Disorders database (STN-DBS = 11, non-DBS = 156). Pigmented neuron loss scores within the substantia nigra as well as alpha-synuclein density scores within the substantia nigra and 9 other brain regions were compared, the latter individually and in summary as the Lewy body brain load score. RESULTS: DBS subjects had higher alpha-synuclein density scores within the substantia nigra, olfactory bulb, and locus ceruleus, as well as higher total Lewy body brain load scores when compared with non-DBS subjects. No differences in substantia nigra pigmented neuron loss scores were found. CONCLUSIONS: STN-DBS subjects tend to have higher alpha-synuclein density scores, but do not have a differential loss of substantia nigra pigmented neurons. © 2016 International Parkinson and Movement Disorder Society.
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