Obesity and Free Fatty Acid Flux

肥胖和游离脂肪酸通量

• 批准号: 7734144
• 负责人: Anne E Sumner
• 金额: $ 25.96万
• 依托单位: NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES
• 依托单位国家: 美国
• 资助国家: 美国
• 起止时间: 至
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/7734144
• 关键词: Adipose tissue; Affect; African American; American; Area; Blood Circulation; Clinic; Communities; County; Data; Development; Diabetes Mellitus; Diet; District of Columbia; Elements; Energy Metabolism; Enrollment; Ensure; Goals; Heart Diseases; Hospitals; Individual; Investigation; Lead; Left; Length of Stay; Maryland; Measures; Metabolic; Minnesota; Muscle; Nonesterified Fatty Acids; Numbers; Obesity; Outpatients; Overweight; Participant; Prevalence; Process; Protocols documentation; Radioactive; Rate; Recruitment Activity; Research; Research Project Grants; Rest; Sex Characteristics; Site; United States National Institutes of Health; Week; Weight; Woman; day; design; ethnic difference; fatty acid metabolism; men; metropolitan; programs; sex; size; stable isotope

To determine if there are sex and ethnic differences in FFA flux and to ensure adequate enrollment of both African American and whites, this investigation is a collaborative effort between the National Institutes of Health (NIH) in Bethesda, Maryland and the Mayo Clinic in Olmsted County, Minnesota. The greater Washington, DC, metropolitan area, where NIH is located, has a large African-American community whereas over 90% of residents of Olmsted County are whites. Therefore, sex differences in FFA flux in African Americans will be mainly studied at the National Institutes of Health. Sex differences in FFA flux in whites will be mainly studied at the Mayo Clinic. The results of the two studies will be combined to determine if there are ethnic differences in FFA flux. To ensure results are attributable to ethnic differences (African American versus white) rather than site differences (NIH versus Mayo) some whites will be enrolled at NIH and some African Americans at Mayo. At NIH, 50 African-Americans (25M, 25W) and 14 whites (7M, 7W) will be enrolled. Equal numbers of normal weight, overweight and obese subjects will be recruited. As outpatients, participants will be placed on weight maintaining diets for two weeks and then admitted for a two-day hospital stay. On each in-hospital morning, resting energy expenditure will be measured and stable isotopes infused to measure FFA flux. Stable isotopes are naturally occurring forms of elements, which are safe and non-radioactive. At NIH 7 African-American men, 14 African-American women and 3 white women have completed the protocol and preliminary analyses are underway.

为了确定FFA通量中是否存在性别和种族差异，并确保非裔美国人和白人都足够入学，这项调查是马里兰州贝塞斯达国家卫生研究院（NIH）与明尼苏达州奥尔姆斯特郡的梅奥诊所的合作努力。 NIH所在的大华盛顿特区，大都市地区拥有一个大型的非裔美国人社区，而奥尔姆斯特德县（Olmsted County）的90％以上的居民是白人。因此，非裔美国人的FFA通量的性别差异将主要在美国国立卫生研究院进行研究。白人FFA通量的性别差异将主要在Mayo诊所进行研究。两项研究的结果将合并，以确定FFA通量是否存在种族差异。为了确保结果归因于种族差异（非裔美国人与白人），而不是现场差异（NIH与蛋黄酱），一些白人将在NIH和梅奥的一些非洲裔美国人中招募一些白人。 在NIH，将招募50名非裔美国人（25m，25W）和14名白人（7M，7W）。将招募相等数量的正常体重，超重和肥胖受试者。作为门诊患者，将参加两个星期的体重维持饮食，然后承认为期两天的住院住院。在每个院内早晨，将测量静息能量消耗，并注入稳定的同位素以测量FFA通量。稳定的同位素是自然存在的元素形式，它们是安全且非放射性活性的。在NIH 7名非裔美国人中，14名非裔美国妇女和3名白人妇女完成了协议，并正在进行初步分析。