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Flavanone-rich citrus beverages counteract the transient decline in postprandial endothelial function in humans: a randomised, controlled, double-masked, cross-over intervention study.

Authors
  • Rendeiro, Catarina1
  • Dong, Honglin1
  • Saunders, Caroline2
  • Harkness, Laura3
  • Blaze, Melvin4
  • Hou, Yanpeng4
  • Belanger, Ronald L3
  • Corona, Giulia1
  • Lovegrove, Julie A1
  • Spencer, Jeremy P E1
  • 1 1Department of Food and Nutritional Sciences,School of Chemistry, Food and Pharmacy,University of Reading,PO Box 226,Reading RG2 6AP,UK.
  • 2 2PepsiCo R+D Nutrition,PepsiCo Inc.,Reading RG2 6UW,UK.
  • 3 3Global R+D Nutrition,PepsiCo Inc.,Valhalla, NY 10595,USA.
  • 4 4PepsiCo R+D Biological & Discovery Analytics,PepsiCo Inc.,New Haven, CT 06511,USA.
Type
Published Article
Journal
British Journal Of Nutrition
Publisher
Cambridge University Press
Publication Date
Jan 09, 2017
Pages
1–12
Identifiers
DOI: 10.1017/S0007114516004219
PMID: 28065188
Source
Medline
Keywords
License
Unknown

Abstract

Specific flavonoid-rich foods/beverages are reported to exert positive effects on vascular function; however, data relating to effects in the postprandial state are limited. The present study investigated the postprandial, time-dependent (0-7 h) impact of citrus flavanone intake on vascular function. An acute, randomised, controlled, double-masked, cross-over intervention study was conducted by including middle-aged healthy men (30-65 years, n 28) to assess the impact of flavanone intake (orange juice: 128·9 mg; flavanone-rich orange juice: 272·1 mg; homogenised whole orange: 452·8 mg; isoenergetic control: 0 mg flavanones) on postprandial (double meal delivering a total of 81 g of fat) endothelial function. Endothelial function was assessed by flow-mediated dilatation (FMD) of the brachial artery at 0, 2, 5 and 7 h. Plasma levels of naringenin/hesperetin metabolites (sulphates and glucuronides) and nitric oxide species were also measured. All flavanone interventions were effective at attenuating transient impairments in FMD induced by the double meal (7 h post intake; P<0·05), but no dose-response effects were observed. The effects on FMD coincided with the peak of naringenin/hesperetin metabolites in circulation (7 h) and sustained levels of plasma nitrite. In summary, citrus flavanones are effective at counteracting the negative impact of a sequential double meal on human vascular function, potentially through the actions of flavanone metabolites on nitric oxide.

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