Chemical composition, antioxidant and anti-AGEs activities of a French poplar type propolis.
Accumulation in tissues and serum of advanced glycation end-products (AGEs) plays an important role in pathologies such as Alzheimer's disease or, in the event of complications of diabetes, atherosclerosis or renal failure. Therefore, there is a potential therapeutic interest in compounds able to lower intra and extracellular levels of AGEs. Among them, natural antioxidants (AO) with true anti-AGEs capabilities would represent good candidates for development. The purpose of this study was to evaluate the AO and anti-AGEs potential of a propolis batch and then to identify the main compounds responsible for these effects. In vivo, protein glycation and oxidative stress are closely related. Thus, AO and antiglycation activities were evaluated using both DPPH and ORAC assays, respectively, as well as a newly developed automated anti-AGEs test. Several propolis extracts exhibited very good AO and anti-AGEs activities, and a bioguided fractionation allowed us to identify pinobanksin-3-acetate as the most active component.
EA 921 SONAS/SFR 4207 QUASAV, Université d'Angers , 16 Boulevard Daviers, 49045 Angers cedex 01, France.
Séverine
S
Boisard
Anne-Marie
AM
Le Ray
Julia
J
Gatto
Marie-Christine
MC
Aumond
Patricia
P
Blanchard
Séverine
S
Derbré
Catherine
C
Flurin
Pascal
P
Richomme
D000975:Antioxidants / Q000494:pharmacology*; D005591:Chemical Fractionation; D044950:Flavanones / Q000032:analysis / Q000494:pharmacology; D005419:Flavonoids / Q000032:analysis; D017127:Glycation End Products, Advanced / Q000037:antagonists & inhibitors*; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D059808:Polyphenols / Q000032:analysis; D032107:Populus / Q000737:chemistry*; D011429:Propolis / Q000737:chemistry* / Q000494:pharmacology*
D000975:Antioxidants; D044950:Flavanones; D005419:Flavonoids; D017127:Glycation End Products, Advanced; D010936:Plant Extracts; D059808:Polyphenols; C108261:pinobanksin; D011429:Propolis