title: Antioxidant biomarkers and food intake in elderly women.
abstract: OBJECTIVE
  To investigate the relationship between antioxidant biomarkers and food intake in elderly women.
  
  
  METHODS
  Cross-sectional study.
  
  
  METHODS
  Recreation Center for the Elderly in the city of Itajaí, Santa Catarina, Brazil.
  
  
  METHODS
  73 elderly women with an average age of 71 years, 93% caucasian, average body weight 68.7 ± 13.1 kg and average BMI 28.5 ± 2.3 kg/m².
  
  
  METHODS
  Nutritional status was assessed based on the Body Mass Index (BMI). Data on food intake were obtained by applying the 24h diet recall method in three non-consecutive days, including Sunday. The assessment of antioxidant biomarkers was performed based on tests for total plasma thiols and phenolic compounds. The linear regression analysis was used to assess the effect of the consumption of food groups on antioxidant biomarkers.
  
  
  RESULTS
  A positive association was found between thiols and intake of carotenoid-rich vegetables (p=0.03), oils, fats and oilseeds (p=0.03); a negative association was observed between total concentrations of phenolic compounds and intake of cereals (p=0.04).
  
  
  CONCLUSIONS
  The intake of foods from the carotenoid-rich vegetables, oils, fats and oilseeds food groups increased the levels of plasma thiols, and the intake of foods from the group of cereals decreased the plasma concentration of phenols. Studies should be conducted to investigate the association between the intake of antioxidant-rich foods and the plasma antioxidant profile, as a way to protect against the aging process.
authors.affiliation: Post-Graduate Program in Nutrition, Federal University of Santa Catarina, Florianópolis, SC, Brazil. brunnab@gmail.com
authors.forename: B C B
authors.initials: BC
authors.lastname: Boaventura
authors.forename: P F
authors.initials: PF
authors.lastname: Di Pietro
authors.forename: M A A
authors.initials: MA
authors.lastname: de Assis
authors.forename: C
authors.initials: C
authors.lastname: Ambrosi
authors.forename: L A N
authors.initials: LA
authors.lastname: Nesello
authors.forename: F O
authors.initials: FO
authors.lastname: Da Silva
authors.forename: F A G
authors.initials: FA
authors.lastname: Vasconcelos
authors.forename: J C F
authors.initials: JC
authors.lastname: Moreira
authors.forename: M A
authors.initials: MA
authors.lastname: Fausto
mesh_terms: D000368:Aged; D000975:Antioxidants / Q000378:metabolism*; D015415:Biomarkers / Q000097:blood; D015992:Body Mass Index; D001938:Brazil; D002338:Carotenoids / Q000494:pharmacology*; D004032:Diet / Q000009:adverse effects; D004041:Dietary Fats / Q000494:pharmacology*; D002523:Edible Grain / Q000009:adverse effects*; D002149:Energy Intake; D005260:Female; D015577:Geriatric Assessment; D006801:Humans; D016014:Linear Models; D015596:Nutrition Assessment; D009752:Nutritional Status; D010636:Phenols / Q000097:blood; D013438:Sulfhydryl Compounds / Q000097:blood
chemical_list: D000975:Antioxidants; D015415:Biomarkers; D004041:Dietary Fats; D010636:Phenols; D013438:Sulfhydryl Compounds; D002338:Carotenoids