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Title:
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Flavanol metabolites distribute in visceral adipose depots after a long-term intake of grape seed proanthocyanidin extract in rats
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Author:
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Serra Maqueda, Aida; Bladé, Cinta; Arola i Ferrer, Lluís; Macià i Puig, Ma Alba; Motilva Casado, Mª José
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Notes:
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A considerable number of epidemiological investigations and intervention studies have supported an association between the intake of
flavanol- and proanthocyanidin-containing foods and a decreased risk of metabolic diseases. Nonetheless, less is know about the capacity
of tissues to accumulate flavanols and/or their metabolites. The main objective of the present study was to determine (n 20) plasma bioavailability
and disposition in the liver, muscle, brown adipose tissue (BAT) and white adipose tissues (mesenteric and perirenal) in rats
after a long-term consumption of three doses of grape seed phenolic extract (5, 25 and 50 mg/kg body weight) for 21 d in order to determine
whether there is a dose–response relationship. Glucuronidated conjugates (total glucuronidated conjugates: C5 mg/kg 1·9; C25 mg/kg
6·4; C50 mg/kg 27·7mmol/l plasma) followed by methyl glucuronidated conjugates (total methyl glucuronidated conjugates: C5 mg/kg 1·98;
C25 mg/kg 4·48; C50 mg/kg 12·5mmol/l plasma) were the main flavanol metabolites quantified in plasma, also detecting a dimer in its free
form (C25 mg/kg 0·74; C50 mg/kg 0·79mmol/l plasma). Each of the studied organs has a particular behaviour of accumulation and response
to the assayed grape seed extract doses, with an exponential bioavailability–dose relationship in BAT, in which flavanols could play an
important role in the reduction or prevention of obesity, modulating the functionality of that tissue.
The present study was supported by grant no. AGL 2008- 00387/ALI and AGL2009-13517-C03-02 from the Spanish Government. It was also supported by the Catalan Government (Interdepartmental Commission for Research and Technological Innovation) through the A. Serra grant. |
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Subject(s):
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-Flavanols
-Long-term intake
-Tissue distribution
-Adipose tissue |
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Rights:
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(c) Cambridge University Press, 2013
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Document type:
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Article
Article - Published version |
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Published by:
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Cambridge University Press
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