Modulation of striatal cholinergic interneuron activity to prevent dystonic cerebral palsy

调节纹状体胆碱能中间神经元活动以预防肌张力障碍性脑瘫

基本信息

  • 批准号:
    10636773
  • 负责人:
  • 金额:
    $ 18.64万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
  • 财政年份:
    2021
  • 资助国家:
    美国
  • 起止时间:
    2021-07-01 至 2026-06-30
  • 项目状态:
    未结题

项目摘要

PROJECT SUMMARY This proposal will determine whether increasing striatal cholinergic interneuron (ChI) activity in the developing mouse brain can prevent dystonia following neonatal brain injury . Dystonic cerebral palsy (CP) due to neonatal brain injury is the most common cause of childhood dystonia and is often medically refractory and functionally debilitating. Yet, its unique pathophysiology remains understudied. Dystonia pathophysiology is more commonly studied in models of rare genetic dystonias which are characterized by striatal ChI hyperexcitability. However, anticholinergic medications are often ineffective for treating dystonia in CP. Determining whether there is striatal cholinergic pathology specific to dystonic CP could yield better targeted treatments. To this end, I have developed a clinically-relevant rodent model of neonatal hypoxic brain injury that displays electrophysiologic markers of dystonia three weeks after injury, mimicking the clinical latency period between neonatal brain injury and dystonia emergence. This latency period allows testing of pre-symptomatic interventions for dystonia prevention. My preliminary data demonstrate increased striatal ChI number in my model but that striatal ChI excitation in young mice during the pre-symptomatic window may be protective against dystonia. In sum, these data suggest that increased striatal ChI number and striatal ChI hyperexcitability may be compensatory mechanisms that are protective against dystonia and, therefore, could be enhanced to prevent dystonia following neonatal brain injury. To test this hypothesis, I propose the following aims: (1) determine whether chemogenetic modulation of striatal ChI activity in young mice after neonatal brain injury changes dystonia severity in adult mice; (2) determine whether chemogenetic modulation of striatal ChI activity in young, otherwise healthy, mice can cause dystonia in adult mice; and (3) determine whether the striatal ChI hyperexcitability observed in genetic dystonias is also present in my model of dystonia following neonatal brain injury. These studies will determine whether pre- symptomatically increasing striatal ChI firing after neonatal brain injury could reduce or prevent dystonia. My long-term career goal is to run a translational research lab focused on preventative treatment development for dystonic CP. I have studied basal ganglia pathophysiology for ten years and have developed a new model of dystonia following neonatal brain injury which will be used for the proposed experiments. However, to complete the proposed research and facilitate my transition to independence, I need additional mentored training in slice electrophysiology (Dr. Steve Mennerick) and chemogenetics (Dr. Jordan McCall). As my physician-scientist advisor, Dr. Joel Perlmutter will provide expertise in dystonia pathophysiology and ensure the translational relevance of my research. The Washington University School of Medicine and Department of Neurology provide a world-renowned research environment and a legacy of passionately and effectively supporting junior faculty. In sum, my proposed research, mentorship team, training plan, and institutional environment pave my path to independence and submission of an R01 on identification of treatment targets for dystonic CP.
项目总结

项目成果

期刊论文数量(12)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
The Role of Child Neurologists in the Management of Motor Disability in Cerebral Palsy: Establishing the Path Forward.
儿童神经科医生在脑瘫运动障碍管理中的作用:建立前进的道路。
  • DOI:
    10.1016/j.pediatrneurol.2023.03.018
  • 发表时间:
    2023
  • 期刊:
  • 影响因子:
    3.8
  • 作者:
    Gelineau-Morel,Rose;Kim,Young-Min;O'Malley,JenniferA;Wilson,JennyL;Aravamuthan,BhoomaR
  • 通讯作者:
    Aravamuthan,BhoomaR
Uncertainties regarding cerebral palsy diagnosis: opportunities to operationalize the consensus definition.
脑瘫诊断的不确定性:实施共识定义的机会。
  • DOI:
    10.1101/2023.06.29.23292028
  • 发表时间:
    2023
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Aravamuthan,BhoomaR;Fehlings,DarcyL;Novak,Iona;Gross,Paul;Alyasiri,Noor;Tilton,Ann;Shevell,Michael;Fahey,Michael;Kruer,Michael
  • 通讯作者:
    Kruer,Michael
Cerebral Palsy in Child Neurology and Neurodevelopmental Disabilities Training: An Unmet Need.
  • DOI:
    10.1177/08830738211072711
  • 发表时间:
    2022-03
  • 期刊:
  • 影响因子:
    1.9
  • 作者:
  • 通讯作者:
A Broader Perspective on Motor Rehabilitation Guidelines for Cerebral Palsy.
脑瘫运动康复指南的更广泛视角。
  • DOI:
    10.1212/wnl.0000000000201048
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    9.9
  • 作者:
    Tilton,AnnHenderson;Coffman,Keith;Aravamuthan,BhoomaR
  • 通讯作者:
    Aravamuthan,BhoomaR
Mice born preterm develop gait dystonia and reduced cortical parvalbumin immunoreactivity.
早产小鼠出现步态肌张力障碍并降低皮质小白蛋白免疫反应性。
  • DOI:
    10.1101/2024.02.01.578353
  • 发表时间:
    2024
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Gemperli,Kat;Folorunso,Femi;Norin,Benjamin;Joshua,Rebecca;Hill,Clayton;Rykowski,Rachel;Galindo,Rafael;Aravamuthan,BhoomaR
  • 通讯作者:
    Aravamuthan,BhoomaR
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BHOOMA ARAVAMUTHAN其他文献

BHOOMA ARAVAMUTHAN的其他文献

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{{ truncateString('BHOOMA ARAVAMUTHAN', 18)}}的其他基金

Modulation of striatal cholinergic interneuron activity to prevent dystonic cerebral palsy
调节纹状体胆碱能中间神经元活动以预防肌张力障碍性脑瘫
  • 批准号:
    10353430
  • 财政年份:
    2021
  • 资助金额:
    $ 18.64万
  • 项目类别:
Modulation of striatal cholinergic interneuron activity to prevent dystonic cerebral palsy
调节纹状体胆碱能中间神经元活动以预防肌张力障碍性脑瘫
  • 批准号:
    10215974
  • 财政年份:
    2021
  • 资助金额:
    $ 18.64万
  • 项目类别:

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