BRAIN MRI & MAGNETIC RESONANCE SPECTROSCOPY IN TOURETTE SYNDROME

脑部核磁共振成像

• 批准号: 7369351
• 负责人: ROB NICOLSON
• 金额: $ 0.51万
• 依托单位: UNIVERSITY OF CALIFORNIA LOS ANGELES
• 依托单位国家: 美国
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-08-01 至 2007-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7369351
• 关键词: BRAIN; MRI; MAGNETIC; RESONANCE; SPECTROSCOPY

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. A number of volumetric and functional brain imaging studies suggest abnormalities in neuronal circuits involving the cortex, striatum, and thalamus as a possible cause of Tourette syndrome. Although the measurement of N-acetylaspartate (NAA), a neuronal marker, through proton magnetic resonance spectroscopy (MRS) provides a unique opportunity for the in vivo investigation of neuronal abnormalities in these regions, there have been, to date, no published studies of NAA or proton MRS in Tourette syndrome. However, pilot data from our initial MRS study of Tourette syndrome suggests neuronal abnormalities in the caudate nucleus and frontal lobes and a lack of the normal asymmetry seen in the caudate nucleus and frontal gray matter. The objective of the present study is to confirm and extend these findings in Tourette syndrome using magnetic resonance imaging and magnetic resonance spectroscopy. Children and adolescents with Tourette syndrome and a control group of children without tics or other major psychiatric illness will undergo magnetic resonance scanning on a 3 Tesla head only magnetic resonance scanner. Frontal gray and white matter volumes and the volume of the basal ganglia and the thalamus will be measured on magnetic resonance images using semiautomated techniques. The concentration of NAA will be measured in these regions as well using magnetic resonance spectroscopy. We hypothesize that patients will have reductions in frontal gray matter volumes and caudate nucleus volumes. Patients will also have abnormalities of NAA in these regions and will lack the normal asymmetry of the caudate nucleus, suggesting neuronal abnormalities. If these hypotheses are confirmed, these findings would further our knowledge of the neurobiological basis of Tourette syndrome and may ultimately be important in determining more effective treatments for tics.

该子项目是利用 NIH/NCRR 资助的中心拨款提供的资源的众多研究子项目之一。子项目和研究者 (PI) 可能已从另一个 NIH 来源获得主要资金，因此可以在其他 CRISP 条目中得到体现。列出的机构是中心的机构，不一定是研究者的机构。许多体积和功能性脑成像研究表明，涉及皮质、纹状体和丘脑的神经元回路异常可能是抽动秽语综合症的原因。尽管通过质子磁共振波谱 (MRS) 测量 N-乙酰天冬氨酸 (NAA)（一种神经元标记物）为体内研究这些区域的神经元异常提供了独特的机会，但迄今为止，尚未发表关于 NAA 或质子 MRS 在抽动秽语综合征中的研究。然而，我们最初对图雷特综合征的 MRS 研究的初步数据表明，尾状核和额叶存在神经元异常，并且尾状核和额叶灰质缺乏正常的不对称性。本研究的目的是利用磁共振成像和磁共振波谱证实并扩展抽动秽语综合征的这些发现。患有抽动秽语综合症的儿童和青少年以及没有抽动症或其他主要精神疾病的对照组儿童将在 3 特斯拉头部磁共振扫描仪上接受磁共振扫描。将使用半自动技术在磁共振图像上测量额叶灰质和白质体积以及基底神经节和丘脑的体积。还将使用磁共振波谱法测量这些区域的 NAA 浓度。我们假设患者额叶灰质体积和尾状核体积会减少。患者在这些区域也会出现 NAA 异常，并且缺乏尾状核的正常不对称性，表明神经元异常。如果这些假设得到证实，这些发现将进一步加深我们对抽动秽语综合征神经生物学基础的了解，并最终可能对确定更有效的抽动治疗方法很重要。