Antioxidant and antidiabetic effects of flavonoids: a structure-activity relationship based study

Sarian, Murni Nazira and Ahmed, Qamar Uddin and Mat So'ad, Siti Zaiton and Alhassan, Alhassan Muhammad and Murugesu, Suganya and Perumal, Vikneswari and Khatib, Alfi and Latip, Jalifah (2017) Antioxidant and antidiabetic effects of flavonoids: a structure-activity relationship based study. BioMed Research International, 2017. pp. 1-14. ISSN 2314-6133 E-ISSN 2314-6141

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Abstract

The best described pharmacological property of flavonoids is their capacity to act as potent antioxidant that has been reported to play an important role in the alleviation of diabetes mellitus. Flavonoids biochemical properties are structure dependent; however, they are yet to be thoroughly understood. Hence, the main aim of this work was to investigate the antioxidant and antidiabetic properties of some structurally related flavonoids to identify key positions responsible, their correlation, and the effect of methylation and acetylation on the same properties. Antioxidant potential was evaluated through dot blot, 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging, ABTS+ radical scavenging, ferric reducing antioxidant power (FRAP), and xanthine oxidase inhibitory (XOI) assays. Antidiabetic effect was investigated through α-glucosidase and dipeptidyl peptidase-4 (DPP-4) assays. Results showed that the total number and the configuration of hydroxyl groups played an important role in regulating antioxidant and antidiabetic properties in scavenging DPPH radical, ABTS+ radical, and FRAP assays and improved both α-glucosidase and DPP-4 activities. Presence of C-2-C-3 double bond and C-4 ketonic group are two essential structural features in the bioactivity of flavonoids especially for antidiabetic property. Methylation and acetylation of hydroxyl groups were found to diminish the in vitro antioxidant and antidiabetic properties of the flavonoids.

Item Type:	Article (Journal)
Additional Information:	4921/60855
Uncontrolled Keywords:	Antioxidant and antidiabetic; Flavonoids; Structure-activity relationship based study
Subjects:	Q Science > QD Chemistry
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Pharmacy > Department of Pharmaceutical Chemistry
Depositing User:	Dr Qamar Uddin Ahmed
Date Deposited:	27 Dec 2017 15:36
Last Modified:	03 Apr 2018 08:53
URI:	http://irep.iium.edu.my/id/eprint/60855

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