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Improving the Assessment of Myelin and Axonal Integrity in Early Multiple Sclerosis

Improving the Assessment of Myelin and Axonal Integrity in Early Multiple Sclerosis
改善早期多发性硬化症髓磷脂和轴突完整性的评估
批准号:
10426053
负责人:
Francesca Rosaria Bagnato
金额:
$0.0万
依托单位国家:
美国
项目类别:
财政年份:
2021
资助国家:
美国
项目状态:
未结题
起止时间:
2021-07-01 至 2025-06-30

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英文摘要
PROJECT SUMMARY Neurodegeneration, characterized by myelin and axonal injury, is a key driver in multiple sclerosis (MS) pathology and a major determinant of patients’ disability and outcome. Currently, it is not possible to assess neurodegeneration in vivo because there are no magnetic resonance imaging (MRI) biomarkers sensitive and specific to myelin and axonal injury. Finding this biometric is set as a major priority by an MS International Panel of Experts, as a path toward halting neurodegeneration and promoting neuroprotection in MS. Accordingly, the long-term goal of the current lines of investigations is to identify MRI biomarkers of neurodegeneration and repair that can be used to monitor disease and predict likelihood of progression. The overall objective of this work is to establish the sensitivity to disease, neurological dysfunction and outcome, of two novel MRI methods in patients at the time of diagnosis. The central hypothesis of this proposal is that metrics derived from selective inversion recovery quantitative magnetization transfer imaging (SIR-qMT) and multi-compartment microscopic diffusion imaging using the spherical mean technique (SMT) are sensitive hallmarks of myelin and axonal neurodegenerative tissue injury early in the disease course, and relate to and predict disease progression more accurately than currently favored MRI measures. The central hypothesis will be tested by pursuing three specific aims: 1) Establish that metrics derived from SIR-qMT (Aim 1) and SMT (Aim 2) are sensitive hallmarks of neurodegenerative injury and reflect neurological dysfunction cross-sectionally, early in the disease course; 2) and explore if metrics derived from SIR-qMT and SMT predict clinical outcome and radiological progression, longitudinally, more accurately than currently favored MRI measures (Aim 3). Longitudinal data will also be used for sample size computations for proof of concept clinical trials on neuroprotection and repair (corollary analysis). The research proposed in this application is innovative because, through the use of two advanced and novel MRI techniques, this project 1) assesses and measures progression of neurodegeneration in Veterans with MS; and 2) delivers sample computations for proof of concept clinical trials on neuroprotection. The proposed research is significant because 1) it will lay the foundation for future larger studies providing a more accurate understanding of MS progression in Veterans; 2) it will help untangle the effects of modifiable and non-modifiable Veteran-related risk factors on disease progression and mortality; and 3) it has the potential to support new interventions and treatments.
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Improving the Assessment of Myelin and Axonal Integrity in Early Multiple Sclerosis
  • 批准号:
    10662233
  • 项目类别:
  • 资助金额:
    $0.0万
  • 财政年份:
    2021
  • 负责人:
    Francesca Rosaria Bagnato
  • 依托单位:
Longitudinal Measurement of Neurodegeneration in two Murine Models of Multiple Sclerosis: A Clinical and Histopathologic Validation Study
  • 批准号:
    10328569
  • 项目类别:
  • 资助金额:
    $19.15万
  • 财政年份:
    2021
  • 负责人:
    Francesca Rosaria Bagnato
  • 依托单位:
海外基金