B procyanidins of Annona crassiflora fruit peel inhibited glycation, lipid peroxidation and protein-bound carbonyls, with protective effects on glycated catalase

Sci Rep. 2019 Dec 16;9(1):19183. doi: 10.1038/s41598-019-55779-3.

Abstract

Advanced glycation end-products (AGEs) have been reported as results of increased oxidative stress. Consequently, the search for new antioxidant and anti-glycating agents is under intense investigation. Plant-derived procyanidins have previously demonstrated anti-glycation properties. Thus, this study aimed to isolate procyanidins from Annona crassiflora fruit peel, a species from the Brazilian Savanna, and investigate their antioxidant and anti-glycation effects. Free radical scavenging and quenching properties, formation of reactive oxygen species (ROS), AGEs, protein carbonyl and thiol groups, lipid peroxidation, crosslinked AGEs, as well as glycated catalase activity, were analyzed. In addition, in silico assessment of absorption, distribution, metabolism, excretion and toxicity was carried out. The procyanidins-enriched fraction, named here as F7, showed high antioxidant and anti-glycation capacities, with inhibitory activities against lipid peroxidation, and AGEs and ROS formation. In addition, there were reductions in AGEs-induced crosslinks and protein carbonyls and protective effects against oxidation of thiol groups and glycated-catalase. ADMET predictions of F7 showed favorable absorption and distribution, with no hepatotoxicity or mutagenicity. Together, our results support the anti-glycation activities of the procyanidins-enriched fraction from A. crassiflora, and suggest that these effects are triggered, at least in part, by scavenging free radical and dicarbonyls intermediates.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Annona / chemistry*
  • Antioxidants / pharmacology
  • Biflavonoids / chemistry
  • Biflavonoids / pharmacology*
  • Catalase / metabolism*
  • Catechin / chemistry
  • Catechin / pharmacology*
  • Cattle
  • Cell Line
  • Cell Survival / drug effects
  • Cross-Linking Reagents / chemistry
  • Fluorescence
  • Fruit / chemistry*
  • Glycation End Products, Advanced / metabolism
  • Glycosylation
  • Lipid Peroxidation / drug effects*
  • Phenols / analysis
  • Phytochemicals / pharmacology*
  • Proanthocyanidins / chemistry
  • Proanthocyanidins / pharmacology*
  • Protective Agents / pharmacology*
  • Protein Carbonylation / drug effects*
  • Reactive Oxygen Species / metabolism
  • Serum Albumin, Bovine / metabolism
  • Sulfhydryl Compounds / metabolism

Substances

  • Antioxidants
  • Biflavonoids
  • Cross-Linking Reagents
  • Glycation End Products, Advanced
  • Phenols
  • Phytochemicals
  • Proanthocyanidins
  • Protective Agents
  • Reactive Oxygen Species
  • Sulfhydryl Compounds
  • procyanidin B
  • Serum Albumin, Bovine
  • Catechin
  • Catalase