Molecular Studies of Cognition in Chronic Alcoholism

慢性酒精中毒认知的分子研究

• 批准号: 8126670
• 负责人: JAY W PETTEGREW
• 金额: $ 5.9万
• 依托单位: UNIVERSITY OF PITTSBURGH AT PITTSBURGH
• 依托单位国家: 美国
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-30 至 2011-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8126670
• 关键词: Acute; Alcoholism; Anterior; Area; Attention; Basal Ganglia; Biochemical; Brain; Brain region; Chin; Cholesterol; Chronic; Clinical; Cognition; Cognitive; Control Groups; Data; Disease; Ethanol; Figs - dietary; Future; Gangliosides; Glutamates; Glutamine; Gray unit of radiation dose; Impaired cognition; Impairment; Individual; Inferior; Inositol; Language; Lead; Left; Lipids; Lipoproteins; Magnetic Resonance Imaging; Magnetic Resonance Spectroscopy; Measurement; Measures; Membrane; Memory; Metabolic; Metabolism; Molecular; Morbidity - disease rate; Motor; N-acetylaspartate; Neurons; Neuropsychological Tests; Parietal; Phospholipids; Phosphorylation; Problem Solving; Property; Proteins; Recording of previous events; Reporting; Sensory; Severities; Signal Transduction; Signaling Protein; Subgroup; Testing; Thalamic structure; Therapeutic; Time; Tissues; Transport Vesicles; Wood material; Writing; abstracting; addiction; base; cognitive change; cognitive function; cohort; in vivo; indexing; inorganic phosphate; insight; macromolecule; magnetic resonance spectroscopic imaging; neuropsychological; problem drinker; receptor function; sugar; white matter

DESCRIPTION (provided by applicant): Chronic alcoholism is generally regarded as a diverse and heterogeneous disorder that can be dichotomized into cognitively intact and cognitively impaired subgroups. The existence of neuropsychological deficits in chronic alcoholism subjects documented through the use of objective tests has been known since at least the 1960's. The rationale for the present study is to investigate possible molecular underpinnings for the cognitive impairment observed in some chronic alcoholism subjects using 31P magnetic resonance spectroscopic imaging (31P MRSI) and short echo time (TE) 'H MRSI and to correlate regional molecular findings with neuropsychological test scores and voxel molecular levels with voxel tissue composition. We propose to study by in vivo 31P MRSI and short TE 'H MRS molecular alterations in brain membrane phospholipid and high-energy phosphate metabolism, synaptic/transport vesicles and phosphorylated proteins as well as molecular alterations in metabolites with N-acetyl moieties, glutamate-glutamine, and gangliosides (by measuring 'H macromolecule resonances) in a chronic alcoholism cohort (N=80; 40 cognitively unimpaired, 40 cognitively impaired) compared to a normal control group of individuals (N=40) matched for all relevant demographic variables. Cognitive status will be determined on the basis of neuropsychological testing utilizing an Average Impairment Rating, a global index of cognitive function, as the criterion measure. Neuropsychological tests are used to assess abstract reasoning and problem solving, memory, attention, language, spatial abilities, sensory/perceptual, and motor function. The Addiction Severity Index will be used to assess the history and severity of the addiction and to match the two alcoholism cohorts. Given the increased morbidity associated with cognitive impairment in chronic alcoholism subjects, further insights into the molecular basis for the cognitive changes could lead the way to future therapeutic and preventative measures.

描述（由申请人提供）：慢性酒精中毒通常被认为是一种多样化且异质性的疾病，可以分为认知完整和认知受损的亚组。至少从 20 世纪 60 年代起，人们就通过客观测试记录了慢性酒精中毒受试者存在神经心理缺陷的情况。本研究的基本原理是使用 31P 磁共振波谱成像 (31P MRSI) 和短回波时间 (TE) 'H MRSI 来研究在一些慢性酒精中毒受试者中观察到的认知障碍的可能分子基础，并将区域分子发现与神经心理学测试分数以及体素分子水平与体素组织组成相关联。我们建议通过体内 31P MRSI 和短 TE'H MRS 来研究脑膜磷脂和高能磷酸盐代谢、突触/运输囊泡和磷酸化蛋白质的分子变化，以及具有 N-乙酰基部分、谷氨酸-谷氨酰胺和神经节苷脂的代谢物的分子变化（通过测量 'H 大分子） 慢性酒精中毒队列（N = 80；40 名认知未受损，40 名认知受损）与所有相关人口统计学变量匹配的正常对照组（N = 40）进行比较。认知状态将根据神经心理学测试来确定，使用平均损伤评级（认知功能的全球指数）作为标准测量。神经心理学测试用于评估抽象推理和问题解决、记忆、注意力、语言、空间能力、感觉/知觉和运动功能。成瘾严重程度指数将用于评估成瘾的历史和严重程度，并匹配两个酗酒队列。鉴于慢性酒精中毒受试者中与认知障碍相关的发病率增加，进一步了解认知变化的分子基础可能会为未来的治疗和预防措施指明方向。