Journal
NUTRITION
Volume 26, Issue 5, Pages 534-541Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.nut.2009.06.017
Keywords
Oxidative stress; Antioxidant intake; Inflammation; Food-frequency questionnaire; Systolic blood pressure; Complement factor-3; Plasminogen activator inhibitor-1
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Funding
- Health Department of the Government of Navarra [22/2007]
- Linea Especial about Nutrition, Obesity and Health [LE/97]
- University of Navarra
- Capes Foundation of the Ministry of Education of Brazil [375605-0]
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Objective: Oxidative stress has been related to the development of obesity and other features accompanying chronic diseases Furthermore, dietary antioxidant intake has been suggested to protect against oxidative damage and related clinical complications Therefore, the aim of this study was to assess the potential associations among dietary total antioxidant capacity (TAC) and several early metabolic syndrome manifestations in healthy young adults. Methods: Anthropometric variables and blood pressure from 153 healthy subjects (20 8 +/- 27 y old) were measured Dietary intake was assessed by a validated food-frequency questionnaire and a 3-d record, which were also used to calculate TAC and to adjust by daily energy intake. Fasting blood samples were collected for measuring biochemical markers. Results: Dietary TAC showed positive and significant associations with fiber, folic acid, vitamin A and C. magnesium, selenium, and zinc intakes, after adjusting by sex and daily energy intake Interestingly, systolic blood pressure, serum glucose. and free fatty acids were also found to be negatively associated with dietary TAC independently of sex and daily energy intake Also, a relevant relation was found between body mass index and TAC values. Interestingly, after adjusting by sex and daily enemy intake, complement factor-3 circulating levels appeared to be negatively and significantly associated with dietary TAC, whereas blood plasminogen activator inhibitor-1 and homocysteine concentrations showed an Inverse marginally statistical trend. Conclusions: These data suggest that dietary TAC may be also a potential early estimate of the risk to develop metabolic syndrome features and that dietary TAC could be a useful research tool in assessing antioxidant intake (C) 2010 Elsevier Inc. All rights reserved
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