Treating primary progressive aphasia and elucidating neurodegeneration in the language network using transcranial direct current stimulation

使用经颅直流电刺激治疗原发性进行性失语症并阐明语言网络中的神经退行性变

基本信息

  • 批准号:
    10201511
  • 负责人:
  • 金额:
    $ 75.5万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
  • 财政年份:
    2019
  • 资助国家:
    美国
  • 起止时间:
    2019-08-15 至 2024-06-30
  • 项目状态:
    已结题

项目摘要

PROJECT SUMMARY/ABSTRACT This revised application responds to PAR-18-175: “Pilot Clinical Trials for the Spectrum of Alzheimer's Disease and Age-related Cognitive Decline.” Primary progressive aphasia (PPA), a debilitating condition of language loss affecting many patients with frontotemporal dementia (FTD) and Alzheimer's disease (AD), currently lacks effective treatments. Recent studies suggest that transcranial direct current stimulation (tDCS), a form of noninvasive neuromodulation, may show promise as an intervention for PPA. However, these research efforts are hampered because they do not address important questions about plasticity in the language system, and because they do not fully utilize knowledge regarding the properties of the language network in PPA to guide treatment. This proposal aims to further advance investigation into tDCS as a potential intervention in PPA and to establish which components of the language network in PPA are most capable of tDCS-induced behaviorally relevant plasticity. Our proposal seeks to determine whether neuromodulation therapies in persons with PPA should aim to strengthen connections in the most degenerated regions of the language network or bolster compensatory changes in more intact areas. We will address this knowledge gap by pursuing a randomized, sham-controlled crossover study of high-density tDCS (HD-tDCS) focused over the anterior regions of the left hemisphere language network in participants with two PPA variants that are characterized by decreased word production but which feature different sites of maximal degeneration. This will allow for comparison of stimulation in a region that is degenerated in some subjects but relatively spared in others. Stimulation will be paired with a behavioral language therapy aimed at augmenting tDCS effects in the language system. Our first aim will be to determine how this intervention differentially impacts language performance in subjects with the two PPA variants. We will then use network graph statistical analyses of neuroimaging data to characterize language networks. We will focus on hubs as centers of critical connectivity in networks, and we propose that measuring changes in the ability of regions in the language network to function as hubs (indexed by hub scores) may be a way to describe how neurodegeneration impacts language network functions in PPA. Thus, the second aim of the proposal will explore differences in hub scores across the language network at baseline in our two PPA subtype groups. The third aim of the proposal will extend this approach by examining behaviorally relevant changes in hub scores induced by tDCS. The final aim of the project will integrate and extend prior findings by developing a model that employs clinical phenotypes, patterns of brain atrophy, and hub score data to predict which individuals are most likely to benefit from our stimulation approach. Taken together, this project will advance a potential intervention for a devastating condition associated with neurodegenerative diseases, elucidate network mechanisms of plasticity in these disorders, and develop a potentially generalizable, network-informed approach for predicting response to therapeutic neuromodulation.
项目总结/文摘

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

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Roy H Hamilton其他文献

Disparities in Genetic Testing for Neurologic Disorders.
神经系统疾病基因检测的差异。
  • DOI:
    10.1212/wnl.0000000000209161
  • 发表时间:
    2024
  • 期刊:
  • 影响因子:
    9.9
  • 作者:
    A. Baldwin;Juliette Copeland;Meron Azage;Laynie Dratch;Kelsey Johnson;Rachel A Paul;Defne A. Amado;M. Baer;Andres Deik;Lauren B. Elman;Michael Guo;A. Hamedani;David J Irwin;Aaron Lasker;Jennifer Orthmann;Colin C. Quinn;T. Tropea;Steven S Scherer;Russell T Shinohara;Roy H Hamilton;Colin A Ellis
  • 通讯作者:
    Colin A Ellis
Abstracts of Scientific Papers and Posters Presented at the Annual Meeting of the Association of Academic Physiatrists: New Orleans, Louisiana March 6 – 10, 2013
学术物理医师协会年会上发表的科学论文和海报摘要:路易斯安那州新奥尔良,2013 年 3 月 6 日至 10 日

Roy H Hamilton的其他文献

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{{ truncateString('Roy H Hamilton', 18)}}的其他基金

Phase II clinical trial of transcranial direct current stimulation in the treatment of primary progressive aphasia
经颅直流电刺激治疗原发性进行性失语症II期临床试验
  • 批准号:
    10522254
  • 财政年份:
    2022
  • 资助金额:
    $ 75.5万
  • 项目类别:
Phase II clinical trial of transcranial direct current stimulation in the treatment of primary progressive aphasia
经颅直流电刺激治疗原发性进行性失语症II期临床试验
  • 批准号:
    10705285
  • 财政年份:
    2022
  • 资助金额:
    $ 75.5万
  • 项目类别:
Treating primary progressive aphasia and elucidating neurodegeneration in the language network using transcranial direct current stimulation
使用经颅直流电刺激治疗原发性进行性失语症并阐明语言网络中的神经退行性变
  • 批准号:
    10450141
  • 财政年份:
    2019
  • 资助金额:
    $ 75.5万
  • 项目类别:
TMS as a Biomarker of Plasticity in Aphasia Recovery
TMS 作为失语症恢复可塑性的生物标志物
  • 批准号:
    8578928
  • 财政年份:
    2013
  • 资助金额:
    $ 75.5万
  • 项目类别:
TMS as a Biomarker of Plasticity in Aphasia Recovery
TMS 作为失语症恢复可塑性的生物标志物
  • 批准号:
    9097676
  • 财政年份:
    2013
  • 资助金额:
    $ 75.5万
  • 项目类别:
TMS as a Biomarker of Plasticity in Aphasia Recovery
TMS 作为失语症恢复可塑性的生物标志物
  • 批准号:
    8688215
  • 财政年份:
    2013
  • 资助金额:
    $ 75.5万
  • 项目类别:
TMS as a Biomarker of Plasticity in Aphasia Recovery
TMS 作为失语症恢复可塑性的生物标志物
  • 批准号:
    9304199
  • 财政年份:
    2013
  • 资助金额:
    $ 75.5万
  • 项目类别:
TMS to explore interhemispheric interactions and to treat aphasia and neglect
TMS 探索大脑半球间的相互作用并治疗失语症和忽视
  • 批准号:
    7531513
  • 财政年份:
    2008
  • 资助金额:
    $ 75.5万
  • 项目类别:
TMS to explore interhemispheric interactions and to treat aphasia and neglect
TMS 探索大脑半球间的相互作用并治疗失语症和忽视
  • 批准号:
    7620029
  • 财政年份:
    2008
  • 资助金额:
    $ 75.5万
  • 项目类别:
TMS to explore interhemispheric interactions and to treat aphasia and neglect
TMS 探索大脑半球间的相互作用并治疗失语症和忽视
  • 批准号:
    7806482
  • 财政年份:
    2008
  • 资助金额:
    $ 75.5万
  • 项目类别:

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