Vitamin K: Genetics of Vascular Calcification

维生素 K：血管钙化的遗传学

• 批准号: 6894687
• 负责人: Jose M. Ordovas
• 金额: $ 8万
• 依托单位: TUFTS UNIVERSITY BOSTON
• 依托单位国家: 美国
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-05-15 至 2006-04-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6894687
• 关键词: apolipoprotein E; calcification; cardiovascular disorder; clinical research; clinical trial phase III; diet therapy; dietary supplements; gene mutation; human subject; lipoprotein lipase; nutrition of aging; nutrition related tag; osteoporosis; pathologic process; patient oriented research; single nucleotide polymorphism; vitamin D; vitamin D receptors; vitamin K; vitamin metabolism; vitamin therapy

Vascular calcification of the coronary arteries and aorta is a risk factor for coronary heart disease (CHD) and other cardiovascular diseases (CVD). In addition, vascular calcification has also been associated with osteoporosis. Both CVD and osteoporosis represent major age-associated health problems and their impact will increase in importance as the global aging of the population continues. A substantial proportion of CHD risk results from modifiable coronary risk factors, such as hypertension, hyperlipidemia, and cigarette smoking. This knowledge has been used to implement successful prevention and therapeutic strategies to stop the increase in CHD mortality that took place during the latter part of the 20th Century. Likewise, identification of those modifiable factors that contribute to an increase in vascular calcification and a reduction in bone mass in older populations could lead to additional effective interventions to reduce the burden not only for CHD but also for fractures in the general population. From the standpoint of prevention, the identification of dietary risk factors common to both diseases is particularly important, because the relatively low cost and safety of dietary therapy. The primary objectives of this study are to identify genetic components underlying vitamin K metabolism, osteoporosis, and vascular calcification and the variability in response to dietary supplementation in elderly men and women. For this purpose, we will evaluate associations between single nucleotide polymorphisms (SNPs) and haplotypes at certain candidate genes [apolipoprotein E (APOE), lipoprotein lipase (LPL), Matrix Gla Protein (MGP), Vitamin D Receptor (VDR)] and baseline levels of vitamin K metabolism related measures, osteoporosis, and vascular calcification in 450 elderly subjects participating in a NIH funded phase III clinical study. Moreover, we will analyze gene by treatment interactions in order to determine the contribution of the genes examined to the variability in response to vitamin supplementation. To the best of our knowledge, this is the first proposal of its kind to study the influence of genetic variation in response to vitamin K supplementation, progression of age-related bone loss and vascular calcification. This research should provide the basis for more comprehensive genetic studies aimed to provide better identification of risk and more precise therapeutic approaches for these age-related disorders.

冠状动脉和主动脉的血管钙化是冠心病（CHD）和其他心血管疾病（CVD）的危险因素。另外，血管钙化也与骨质疏松症有关。 CVD和骨质疏松症都代表了与年龄相关的主要健康问题，随着人口的全球衰老持续，其影响将增加。 CHD风险很大一部分是由于可改变的冠状动脉危险因素（例如高血压，高脂血症和吸烟）。这些知识已被用来实施成功的预防和治疗策略，以阻止20世纪后期发生的CHD死亡率的增加。同样，鉴定那些有助于增加血管钙化和减少较早人群的骨骼的可修改因素可能会导致额外的有效干预措施，以减少 不仅对冠心病，而且对普通人群的骨折负担。从预防的角度来看，两种疾病常见的饮食危险因素的鉴定尤其重要，因为饮食疗法的成本相对较低。这项研究的主要目标是确定维生素K代谢，骨质疏松症和血管钙化的基础遗传成分，以及对老年男性和女性饮食补充的响应变异性。 For this purpose, we will evaluate associations between single nucleotide polymorphisms (SNPs) and haplotypes at certain candidate genes [apolipoprotein E (APOE), lipoprotein lipase (LPL), Matrix Gla Protein (MGP), Vitamin D Receptor (VDR)] and baseline levels of vitamin K metabolism related measures, osteoporosis, and vascular参加NIH资助的III期临床研究的450名老年受试者的钙化。此外，我们将通过 治疗相互作用是为了确定所检查的基因对响应维生素补充的变异性的贡献。据我们所知，这是研究遗传变异对维生素K补充，与年龄相关的骨质流失和血管钙化的进展的第一个建议。这项研究应为更全面的遗传研究提供基础，旨在为这些与年龄有关的风险更好地识别风险和更精确的治疗方法 疾病。