Neuroimaging and Neurocognitive Markers of Brain Injury in Young Children with Sickle Cell Disease

镰状细胞病幼儿脑损伤的神经影像学和神经认知标志物

基本信息

批准号：
10636709
负责人：
EBONI I LANCE
金额：
$ 37.33万
依托单位：
HUGO W. MOSER RES INST KENNEDY KRIEGER
依托单位国家：
美国
项目类别：
财政年份：
2023
资助国家：
美国
起止时间：
2023-04-01 至 2028-03-31
项目状态：
未结题

来源：
https://reporter.nih.gov/project-details/10636709
关键词：
3 year old 4 year old 5 year old 6 year old Acute Adult Age Anesthesia procedures Axon Behavioral Blood Brain Injuries Case/Control Studies Cephalic Cerebral Infarction Cerebrovascular Circulation Cerebrum Characteristics Child Chronic Disease Clinical Clinical Data Cognition Cognitive Cohort Studies Collection Data Data Collection Development Diagnosis Diagnostic Disease Early identification Early treatment Education Enzyme-Linked Immunosorbent Assay Evaluation Fetal Hemoglobin Future Goals Guidelines Hematological Disease Hemoglobin concentration result Impaired cognition Inflammatory Inherited Injury Intelligence Ischemic Stroke Knowledge Language Lesion Literature Longitudinal Studies Magnetic Resonance Imaging Mathematics Measures Medical Medical History Metabolic Metabolic stress Metabolism Morbidity - disease rate Neurocognitive Neurodevelopmental Deficit Neurologic Neurologic Examination Neurologic Symptoms Neurons Neuropsychological Tests Outcome Oxygen Participant Patients Performance Physical Function Physicians Pilot Projects Plasma Plasma Proteins Population Proteins Psychologist Reading Recommendation Recording of previous events Recurrence Research Research Personnel Risk Risk Factors Sample Size Sampling School-Age Population Sedation procedure Sensitivity and Specificity Services Sickle Cell Anemia Site Stroke Test Result Testing Therapeutic Intervention Time Training Vulnerable Populations White Blood Cell Count procedure Work brain magnetic resonance imaging brain tissue disability executive function experience high risk hydroxyurea improved male minimal risk multidisciplinary multimodality neurocognitive test neuroimaging neuroprotection predictive marker prevent prospective risk prediction screening sex skills standard of care verbal

项目摘要

Project Summary/Abstract Sickle cell disease (SCD) is an inherited blood disorder with several neurological and developmental complications. Young children with SCD between 2 and 5 years of age, in particular, have an increased risk for ischemic stroke and silent cerebral infarctions (SCI). SCI are hyperintense T2 brain magnetic resonance imaging (MRI) lesions with no accompanying acute neurological symptoms but with associated impaired cognition and increased risk of future progressive or additional stroke/SCI. Neuroimaging and neurocognitive profiles associated with SCI are well established in school-aged and adult SCD populations. This information is largely unknown in young children under 6 years of age with SCD due to risk of sedation/anesthesia with MRI. Our preliminary studies have shown that behavioral training can yield high quality neuroimaging data without sedation in 3 to 4 years old children with SCD through a pilot study. The long term goal of this application is to develop a diagnostic battery using a combination of unsedated neuroimaging measures, neurocognitive testing, and plasma brain injury protein levels to identify young children with SCD at risk for SCI. Through a prospective longitudinal case-control study, we will collect medical history and clinical data and perform neurological examination and blood draws annually in 100 children with SCD from study entry to study exit. Participants will also undergo initial neuroimaging battery at 3 to 4 years of age with repeat neuroimaging at study exit as well as longitudinal neurocognitive testing at study entry, with initial neuroimaging, and with exit neuroimaging. This multi-disciplinary and multi-modality proposal has two Aims. Aim 1 will identify the cross-sectional neuroimaging and neurocognitive findings in 3 to 4 year- old children with SCD and SCI on initial MRI by comparing their results to children with SCD without SCI. Aim 2 will compare longitudinal data from 6 year-old children with and without SCI on exit MRI. Exploratory aims will explore differences in the neuroimaging measures in children on different disease-modifying treatments (hydroxyurea) and plasma protein levels in children with and without SCI. The proposed work will determine which neuroimaging measures and neurocognitive testing may predict SCI, leading to a multi-site study to validate these findings in a larger regionally heterogenous SCD population. The study PI, a neurodevelopmental physician, is an early stage investigator well suited to expand her existing study cohort with support from a team of co-investigators, including a senior behavioral psychologist and neuroimaging physicist, as well as existing collaborators and staff.

项目概要/摘要镰状细胞病 (SCD) 是一种遗传性血液疾病，伴有多种神经和发育障碍并发症。尤其是 2 至 5 岁患有 SCD 的幼儿，罹患 SCD 的风险更高缺血性中风和无症状脑梗塞（SCI）。 SCI 是高信号 T2 脑磁共振不伴有急性神经系统症状但伴有相关受损的影像学 (MRI) 病变认知和未来进行性或额外中风/SCI 的风险增加。神经影像学和神经认知与 SCI 相关的概况在学龄和成人 SCD 人群中已得到很好的确立。该信息是由于 MRI 镇静/麻醉的风险，对于患有 SCD 的 6 岁以下幼儿来说，这一点在很大程度上是未知的。我们的初步研究表明，行为训练可以产生高质量的神经影像数据，而无需通过一项试点研究对患有 SCD 的 3 至 4 岁儿童进行镇静。该应用的长期目标是开发一种结合使用的诊断电池未镇静的神经影像学测量、神经认知测试和血浆脑损伤蛋白水平来识别患有 SCD 的幼儿有发生 SCI 的风险。通过前瞻性纵向病例对照研究，我们将收集病史和临床数据，每年进行神经系统检查和抽血 100 患有 SCD 的儿童从入学到毕业。参与者还将在 3 点接受初始神经影像检查至 4 岁，在研究退出时重复进行神经影像检查以及在研究时进行纵向神经认知测试入口、初始神经影像和出口神经影像。这项多学科、多模式的提案有两个目标。目标 1 将确定 3 至 4 年内的横断面神经影像学和神经认知发现通过将患有 SCD 和 SCI 的老年儿童的初始 MRI 结果与患有 SCD 但没有 SCI 的儿童进行比较。目的图 2 将比较有和没有 SCI 的 6 岁儿童退出 MRI 的纵向数据。探索性目标将探讨接受不同疾病缓解治疗的儿童神经影像学测量的差异患有和未患有 SCI 的儿童（羟基脲）和血浆蛋白水平。拟议的工作将决定哪些神经影像学测量和神经认知测试可以预测 SCI，从而开展了一项多中心研究在更大的区域异质性 SCD 人群中验证这些发现。该研究的 PI，神经发育医生，是一位早期研究人员，非常适合扩大她现有的研究队列在包括高级行为心理学家和神经影像学专家在内的联合研究人员团队的支持下物理学家，以及现有的合作者和工作人员。