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Brain Connectivity Changes with Spinal Cord Stimulation Treatment of Chronic Pain: A Resting State NIRS/EEG Study

Brain Connectivity Changes with Spinal Cord Stimulation Treatment of Chronic Pain: A Resting State NIRS/EEG Study
慢性疼痛的脊髓刺激治疗引起的大脑连接变化:静息状态 NIRS/EEG 研究
批准号:
10701130
负责人:
SVETLANA PUNDIK
金额:
$0.0万
依托单位国家:
美国
项目类别:
财政年份:
2023
资助国家:
美国
项目状态:
未结题
起止时间:
2023-07-01 至 2025-06-30

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中文摘要
翻译
慢性疼痛是一种复杂的神经系统疾病,对功能和生活质量有不利影响。
英文摘要
Chronic pain is a complex neurological disease that adversely impacts function and quality of life. Brain structure and function are altered when an individual is in the chronic pain state. Furthermore, chronic pain is associated with disruptions in functional brain connectivity. Spinal cord stimulation (SCS) is a clinically available non-pharmacological therapy that is used in the management of chronic pain. Although SCS is effective for many, there are individuals who do not benefit. Therefore, in order to better understand brain mechanisms that underlie SCS treatment of chronic pain and to develop brain biomarkers of SCS efficacy, we propose to evaluate functional brain changes in response to SCS. Finding a brain signature of pain relief in response to SCS would improve understanding of how SCS alleviates chronic pain and may help to identify those most likely to respond. The main objective of this study is to assess changes in brain connectivity in response to SCS in individuals with chronic neuropathic pain. We will study two cohorts: Cohort 1 – naive to SCS patients who are undergoing SCS trial period; Cohort 1 – long- term SCS users (≥6 months post implantation). We aim to identify neurophysiological brain signatures of pain relief in these two populations using resting state Near Infrared Spectroscopy and Electroencephalography (rs-fNIRS/EEG). Study Design: We will enroll veterans with refractory chronic neuropathic pain who are currently receiving clinical care within the medical center. Cohort 1: Individuals with chronic neuropathic pain who are naïve to SCS and were selected for SCS trial period as part of their clinical care will participate in two study visits: before the beginning of the SCS trial and the end of the trial period. Data collection will be consistent across all data collection timepoints (T1 – T3) and include rs- fNIRS/EEG and clinical pain measures. Cohort 2: Participants with effective implanted SCS ≥ 6 months will participate in three study visits conducted 24-48 hours apart. Data will be collected during SCS use and following an SCS washout period. Data collection will be consistent across all data collection timepoints(T1-T4) and include rs-fNIRS/EEG and clinical pain measures. Both cohorts will receive paresthesia based SCS. AIM 1 is to characterize neurophysiological (rs-fNIRS/EEG) brain signature of pain relief during the SCS trial period for patients with chronic neuropathic pain who are naïve to SCS. AIM 2 is to characterize neurophysiological (rs-fNIRS/EEG) brain signature of pain relief in patients with chronic neuropathic pain who have utilized SCS for ≥6 months. Outcome Measures to address both aims include rs-functional connectivity (rs-fNIRS/EEG); and a composite clinical pain assessment that will include Numeric Pain Rating Scale (NPRS), Patient Reported Outcomes Measurement Information System-29 profile v2.1(PROMIS-29); EQ-5D-5L; Patient Global Impression of Change (PGIC); painDetect; and activity monitoring. Significance: Studying changes in brain connectivity in response to SCS will provide insight into the treatment mechanism of SCS. Use of neuroimaging methods such as rs-fNIRS/EEG that can be easily applied in the clinical setting to further refine patient selection for SCS may improve outcome in SCS therapy. This grant will provide preliminary data for future studies aimed at developing biomarkers of pain-relief with SCS treatment.
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