Serum leptin and weight gain over 8 years in African American and Caucasian young adults.

Serum leptin and weight gain over 8 years in African American and Caucasian young adults.
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非裔美国人和白种人年轻人 8 年来的血清瘦素和体重增加。

DOI:
10.1002/j.1550-8528.1999.tb00384.x
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发表时间:
1999
期刊:
Obesity research
影响因子:
--
通讯作者:
Schreiner,PJ
Schreiner,PJ
中科院分区:
--
文献类型:
--
作者:
Folsom,AR;Jensen,MD;JacobsJr,DR;Hilner,JE;Tsai,AW;Schreiner,PJ

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福尔松,亚伦r .,迈克尔d.詹森,小大卫r .雅各布斯,琼e.希尔纳,艾伯特w.蔡,和帕梅拉j.施莱纳。非裔美国人和白种人青年8年血清瘦素与体重增加的关系科学通报。1999;7:1-8。目的:人们对如何预防成年期体重增加非常感兴趣。瘦素,一种在脂肪组织中表达的肽激素,被认为可以向中枢神经系统发出关于身体脂肪储存水平的信号,从而可以控制食欲。关于血清瘦素浓度是否影响自由生活人群的长期体重变化的信息很少。研究方法和程序:从一项正在进行的非裔美国年轻人和白人成年人队列研究中,我们选择了参与者样本(n=492),按性别、种族和体重变化进行了8年的分层。用放射免疫法测定储存标本的血清瘦素。体重变化与基线瘦素浓度相关。结果:横截面上,瘦素浓度与体重指数呈正相关,与身体活动水平负相关,且女性高于男性。这些变量解释了72%的血清瘦素差异。在8年中,样本平均增加了7.8公斤(标准差= 10.8)。没有证据表明8年体重变化与初始瘦素浓度相关:基线瘦素每增加10 ng/ mL(约一个标准差),8年体重变化仅减少0.5 kg(95%置信区间= - 1.8至0.8,p= 0.47)。相反,瘦素变化与体重变化高度相关(r= 0.62)。讨论:我们的数据证实了肥胖决定瘦素水平的证据,但不支持瘦素缺乏在普通人群肥胖中起重要作用的假设。
FOLSOM, AARON R., MICHAEL D. JENSEN, DAVID R. JACOBS, JR., JOAN E. HILNER, ALBERT W. TSAI, AND PAMELA J. SCHREINER. Serum leptin and weight gain over 8 years in African American and Caucasian young adults.Obes Res. 1999;7:1–8.Objective: There is considerable interest in how to prevent weight gain in adulthood. Leptin, a peptide hormone expressed in adipose tissue, is believed to signal the central nervous system about the level of body fat stores, and thereby may control appetite. Little information exists on whether the serum leptin concentration influences long‐term weight changes in the free‐living population.Research Methods and Procedures: From an ongoing cohort study of young African American and white adults, we selected a sample of participants (n=492), stratified on sex, race, and weight changes over 8 years. Serum leptin was measured on stored specimens using a radioimmunoassay. Weight change was modeled in relation to baseline leptin concentrations.Results: Cross‐sectionally, leptin concentration was associated positively with body mass index, negatively with physical activity level, and was higher in women than men. These variables explained 72% of the variance in serum leptin. Over the 8 years, the sample gained an average of 7.8 kg (standard deviation = 10.8). There was no evidence that 8‐year weight change was associated with initial leptin concentration: 8‐year weight change was only 0.5 kg less (95% confidence interval = −1.8 to 0.8,p= 0.47) per each 10 ng/ mL increment (approximately one standard deviation) of baseline leptin. In contrast, leptin change correlated highly (r= 0.62) with weight change.Discussion: Our data corroborate evidence that adiposity determines leptin levels but do not support the hypothesis that leptin deficiency plays an important role in obesity in the general population.
性别、种族、身体成分和脂肪分布对儿童血清瘦素浓度的影响。
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影响因子: --
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发表时间: 1989-11-01
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影响因子: --
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影响因子: --
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