THE CHROMOSOME 18 CLINICAL RESEARCH CENTER
18 号染色体临床研究中心
基本信息
- 批准号:7378193
- 负责人:
- 金额:$ 7.76万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2006
- 资助国家:美国
- 起止时间:2006-04-01 至 2007-03-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
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. OBJECTIVE: Aneusomy syndromes are chromosomal disorders resulting from loss or duplications of chromosomal regions. There are two opposing views about how aneusomy causes disease. One view strongly supports the notion that a chromosomal imbalance, regardless of which region is unbalanced, is sufficient to explain many of the phenotypic features seen in aneusomy syndromes. Since the majority of aneusomy syndromes result in broad features such as mental retardation, experts argue that single gene correlations with these phenotypes is highly unlikely. The other view argues that by analyzing a wide variety of syndromes, it can be demonstrated that different aneuploid phenotypes are specific and distinguishable from one another. From this information it has been inferred that aneuploid phenotypes are determined by specific genes encoded in the region of imbalance. In San Antonio, we are systematically studying children with chromosome 18 aneusomies to test the following hypotheses: 1. Growth hormone deficiency in children with chromosome 18 deletions is accompanied by cognitive and microstructural abnormalities of the brain that can be ameliorated by GH therapy. 2. The physical and behavioral findings in individuals with the abnormalities of chromosome 18 are due to the genes that are present on a non-diploid number. Therefore, correlation of the physical and behavioral findings with the extent of their deletion will help to identify the genes involved. An understanding of the molecular mechanisms of these findings will provide the insight necessary to devise appropriate therapy. METHODS: The UTHSCSA Department of Pediatrics established the Chromosome 18 Clinical Research Center with the following three goals: 1. To be the international medical and educational resource for the families of individuals with chromosome 18 abnormalities. 2. To perform and facilitate both clinical and basic research relating to the syndromes of chromosome 18. 3. To devise treatments to help these individuals overcome the effects of their chromosome abnormality. In order to attain these goals, extensive data must to be gathered on both the phenotype and genotype of these individuals: We therefore propose the following specific aims: 1. Perform a genotypic analysis to determine: A. The genotype of the affected individual B. The parent of origin of the chromosome with the abnormality 2. Gather comprehensive clinical data on individuals with chromosome 18 abnormalities including: A. Determination of growth hormone status. B. Measurement of corticotropin, thyroid and sex hormone levels C. Behavioral and neuropsychometric evaluations D. Audiological and ear, nose and throat examination E. Magnetic resonance imaging (MRI) of the brain F. Dysmorphology evaluation G. Neurology examination H. Dental evaluation I. Speech Pathology evaluation J. Psychiatric evaluation The phenotypic assessment will be longitudinal; therefore the participants will have a wide age range. This wide age range as well as the fact that some participants may be assessed multiple times means that every component of our assessment may not be appropriate for every participant at every visit.
该子项目是利用NIH/NCRR资助的中心赠款提供的资源的许多研究子项目之一。子项目和研究者(PI)可能从另一个NIH来源获得主要资金,因此可以在其他CRISP条目中表示。所列机构为中心,不一定是研究者所在机构。目的:非整倍体综合征是由于染色体区域丢失或重复而引起的染色体异常。关于异染色体是如何导致疾病的,有两种对立的观点。一种观点强烈支持这样的观点,即染色体不平衡,无论哪个区域不平衡,都足以解释异体综合征中看到的许多表型特征。由于大多数异染色体综合征导致广泛的特征,如精神发育迟滞,专家认为,单基因与这些表型的相关性是极不可能的。另一种观点认为,通过分析各种各样的综合征,可以证明不同的非整倍体表型是特异的,可以相互区分。从这些信息中可以推断,非整倍体表型是由不平衡区域中编码的特定基因决定的。在圣安东尼奥,我们正在系统地研究18号染色体异常的儿童,以验证以下假设:1。18号染色体缺失的儿童生长激素缺乏症伴随着大脑的认知和微结构异常,可以通过GH治疗来改善。2. 18号染色体异常个体的身体和行为发现是由于非二倍体上存在的基因。因此,将身体和行为发现与其缺失程度相关联将有助于识别相关基因。对这些发现的分子机制的理解将为设计适当的治疗提供必要的见解。 方法:UTHSCSA儿科部门建立了18号染色体临床研究中心,有以下三个目标:1。成为18号染色体异常个体家庭的国际医疗和教育资源。 2.开展和促进与18号染色体综合征相关的临床和基础研究。3.设计治疗方法来帮助这些人克服染色体异常的影响。 为了实现这些目标,必须收集关于这些个体的表型和基因型的广泛数据:因此,我们提出以下具体目标:1。进行基因型分析以确定: A.受影响个体的基因型 B。具有异常2的染色体的起源的亲本。收集18号染色体异常个体的全面临床数据,包括: A.生长激素状态的测定。 B。促肾上腺皮质激素、甲状腺激素和性激素水平的测量 C.行为和神经心理测量评估 D.听力学和耳鼻喉科检查 E.脑磁共振成像(MRI) F.形态学评价 G.神经学检查H.牙科评估 I. 言语病理学评估 表型评估将是纵向的;因此参与者将具有广泛的年龄范围。这种广泛的年龄范围以及一些参与者可能会被多次评估的事实意味着我们评估的每个组成部分可能不适合每次访视的每位参与者。
项目成果
期刊论文数量(0)
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专利数量(0)
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{{ truncateString('JANNINE De Mars CODY', 18)}}的其他基金
Molecular and Cellular Mechanisms of Chromosome 18q23 Dysmyelination
染色体 18q23 髓鞘脱失的分子和细胞机制
- 批准号:
10592982 - 财政年份:2023
- 资助金额:
$ 7.76万 - 项目类别:
Chromosome 18 Cohort Phenotype Enrichment to Strengthen the Gabriella Miller Kids First Program
18 号染色体队列表型富集以加强 Gabriella Miller Kids First 计划
- 批准号:
10637695 - 财政年份:2023
- 资助金额:
$ 7.76万 - 项目类别:
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