Genetics of water balance

水平衡的遗传学

基本信息

  • 批准号:
    8287663
  • 负责人:
  • 金额:
    $ 35.29万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
  • 财政年份:
    2010
  • 资助国家:
    美国
  • 起止时间:
    2010-07-01 至 2014-04-30
  • 项目状态:
    已结题

项目摘要

DESCRIPTION (provided by applicant): Disorders of water metabolism are common among the elderly, the acutely and chronically ill, and among patients taking certain medications. Abnormal water balance is detected clinically by an increase or decrease in the serum sodium concentration (hyper- and hyponatremia, respectively). Hyponatremia is the most common of the electrolyte abnormalities and even a modest reduction in serum sodium concentration (i.e., water excess) is associated with substantial morbidity and mortality. Rare mutations in water-regulatory genes cause familial abnormalities of water balance; however, these account for only a small minority of cases of hyponatremia. Our preliminary data strongly support the heritability of systemic water balance; in addition, we have identified a non-synonymous polymorphism in a water-regulatory gene that is associated with hyponatremia in several human populations. No prior studies have addressed the genetics of water balance on a population-wide basis and there is at present no way to predict who is at greatest risk from medications or disease states statistically associated with the development of hyponatremia. The over-arching objective of this proposal is to define the genetics of systemic water balance on a population-wide basis using data derived from prior large-scale NHLBI-sponsored (and other NIH-sponsored) cohort and family-based studies. In Aim I, we will quantify the heritability of water balance in additional human populations using data from family-based components of large NHLBI-funded cohort studies. In Aim II, we will identify human genetic polymorphisms associated with aberrant water balance via a candidate gene approach. Banked genomic DNA previously obtained in the course of large NHLBI-funded cohort studies will be used. In Aim III, genome-wide association studies will be performed to identify in an unbiased fashion genetic polymorphisms associated with aberrant systemic water balance in large cohorts. For this Aim, we will use high-density genotyping data generated as part of ongoing analysis in several NHLBI-funded cohort studies. Through this combination of approaches made possible by NHLBI-supported data generation, we hope to elucidate the human genetic basis for systemic water balance and identify polymorphisms associated with hypo- and hypernatremia. PUBLIC HEALTH RELEVANCE: Disorders of water metabolism cause substantial morbidity and mortality among the elderly, the acutely and chronically ill, and among patients taking certain commonly- prescribed medications. Our preliminary data indicate that heredity determines, in large part, which patients are most susceptible to this complication. We will use an array of data generated in the course of multiple large NHLBI-funded cohort studies to elucidate the human genetic basis for abnormalities in systemic water balance.
描述(由申请人提供): 水代谢障碍在老年人、急性和慢性病患者以及服用某些药物的患者中很常见。临床上,水平衡异常表现为血钠浓度的升高或降低(分别为高钠血症和低钠血症)。低钠血症是最常见的电解质异常,即使是血清钠浓度的轻微降低(即水分过剩)也会导致相当大的发病率和死亡率。水分调节基因的罕见突变导致家族性水分平衡异常;然而,这些只占低钠血症的一小部分。我们的初步数据有力地支持了系统性水平衡的遗传性;此外,我们还发现了一个水调节基因的非同义多态性,该基因与几个人群的低钠血症有关。以前没有研究在全人群的基础上解决水平衡的遗传学问题,目前还没有办法预测谁在与低钠血症的发展统计上相关的药物或疾病状态中风险最大。这项建议的总体目标是利用之前由NHLBI赞助(和其他由NIH赞助)的大规模队列和基于家庭的研究得出的数据,在全人群的基础上定义系统性水平衡的遗传学。在目标I中,我们将使用NHLBI资助的大型队列研究中以家庭为基础的部分数据来量化额外人口中水平衡的遗传力。在AIM II中,我们将通过候选基因方法识别与水平衡异常相关的人类基因多态。之前在NHLBI资助的大型队列研究过程中获得的银行基因组DNA将被使用。在AIM III中,将进行全基因组关联研究,以公正的方式识别与大型队列中异常的系统性水平衡相关的遗传多态。为此,我们将在几项NHLBI资助的队列研究中使用高密度基因分型数据,作为正在进行的分析的一部分。通过NHLBI支持的数据生成的这种方法的组合,我们希望阐明全身性水平衡的人类遗传基础,并识别与低钠血症和高钠血症相关的基因多态性。 公共卫生相关性:水代谢障碍在老年人、急性和慢性病患者以及服用某些常用处方药的患者中会导致相当大的发病率和死亡率。我们的初步数据表明,遗传在很大程度上决定了哪些患者最容易发生这种并发症。我们将使用NHLBI资助的多个大型队列研究过程中产生的一系列数据来阐明系统性水平衡异常的人类遗传基础。

项目成果

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DAVID M COHEN其他文献

DAVID M COHEN的其他文献

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{{ truncateString('DAVID M COHEN', 18)}}的其他基金

A Novel Locus in the Regulation of Human Water Balance
人体水平衡调节的新途径
  • 批准号:
    10474258
  • 财政年份:
    2017
  • 资助金额:
    $ 35.29万
  • 项目类别:
A Novel Locus in the Regulation of Human Water Balance
人体水平衡调节的新途径
  • 批准号:
    10047697
  • 财政年份:
    2017
  • 资助金额:
    $ 35.29万
  • 项目类别:
Polymorphism affecting water balance
多态性影响水平衡
  • 批准号:
    8394605
  • 财政年份:
    2010
  • 资助金额:
    $ 35.29万
  • 项目类别:
Polymorphism affecting water balance
多态性影响水平衡
  • 批准号:
    8195867
  • 财政年份:
    2010
  • 资助金额:
    $ 35.29万
  • 项目类别:
Polymorphism affecting water balance
多态性影响水平衡
  • 批准号:
    7927715
  • 财政年份:
    2010
  • 资助金额:
    $ 35.29万
  • 项目类别:
Genetics of water balance
水平衡的遗传学
  • 批准号:
    7889338
  • 财政年份:
    2010
  • 资助金额:
    $ 35.29万
  • 项目类别:
Polymorphism affecting water balance
多态性影响水平衡
  • 批准号:
    8262628
  • 财政年份:
    2010
  • 资助金额:
    $ 35.29万
  • 项目类别:
Genetics of water balance
水平衡的遗传学
  • 批准号:
    8466312
  • 财政年份:
    2010
  • 资助金额:
    $ 35.29万
  • 项目类别:
Genetics of water balance
水平衡的遗传学
  • 批准号:
    8099666
  • 财政年份:
    2010
  • 资助金额:
    $ 35.29万
  • 项目类别:
Genetics of water balance
水平衡的遗传学
  • 批准号:
    9095708
  • 财政年份:
    2009
  • 资助金额:
    $ 35.29万
  • 项目类别:

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