Metabolomics Reveals Metabolically Healthy and Unhealthy Obese Individuals Differ in their Response to a Caloric Challenge

被引:40
作者
Badoud, Flavia [1 ]
Lam, Karen P. [2 ]
Perreault, Maude [1 ]
Zulyniak, Michael A. [1 ]
Britz-McKibbin, Philip [2 ]
Mutch, David M. [1 ]
机构
[1] Univ Guelph, Dept Human Hlth & Nutr Sci, Guelph, ON N1G 2W1, Canada
[2] McMaster Univ, Dept Chem & Chem Biol, Hamilton, ON, Canada
基金
加拿大自然科学与工程研究理事会; 加拿大健康研究院;
关键词
INSULIN-RESISTANCE; BRANCHED-CHAIN; FATTY-ACIDS; YOUNG-ADULTS; AMINO-ACIDS; PLASMA; PREDICTORS; PROFILES; MARKERS; WEIGHT;
D O I
10.1371/journal.pone.0134613
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Objective To determine if metabolically healthy obese (MHO) individuals have a different metabolic response to a standardized diet compared to lean healthy (LH) and metabolically unhealthy obese (MUO) individuals. Methods Thirty adults (35-70 yrs) were classified as LH, MHO, and MUO according to anthropometric and clinical measurements. Participants consumed a standardized high calorie meal (similar to 1330 kcal). Blood glucose and insulin were measured at fasting, and 15, 30, 60, 90 and 120 min postprandially. Additional blood samples were collected for the targeted analysis of amino acids (AAs) and derivatives, and fatty acids (FAs). Results The postprandial response (i.e., area under the curve, AUC) for serum glucose and insulin were similar between MHO and LH individuals, and significantly lower than MUO individuals (p < 0.05). Minor differences were found in postprandial responses for AAs between MHO and MUO individuals, while three polyunsaturated FAs (linoleic acid,gamma-linolenic acid, arachidonic acid) showed smaller changes in serum after the meal in MHO individuals compared to MUO. Fasting levels for various AAs (notably branched-chain AA) and FAs (e.g., saturated myristic and palmitic acids) were found to correlate with glucose and insulin AUC. Conclusion MHO individuals show preserved insulin sensitivity and a greater ability to adapt to a caloric challenge compared to MUO individuals.
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页数:15
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