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[Substituted methoxyphenol with antioxidative activity: correlation between physicochemical and biological results]
J P Souchard1, B Limasset, F Michel
1Physico-Chimie et Radiobiologie, Université Paul Sabatier, Toulouse.
Comptes Rendus Des Seances De La Societe De Biologie Et De Ses Filiales
|January 1, 1995
Summary
Guaiacol derivatives were studied for anti-inflammatory and antioxidant properties. Curcumin and methyl ferulate showed the most promising results in scavenging reactive oxygen species (ROS) and inhibiting inflammatory enzymes.
Area of Science:
- Pharmacology
- Medicinal Chemistry
- Biochemistry
Background:
- Guaiacol derivatives are present in traditional medicines with anti-inflammatory properties.
- Their activity may stem from interactions with reactive oxygen species (ROS) or inflammatory enzymes.
Purpose of the Study:
- To compare biological and physico-chemical methods for evaluating antioxidant properties of guaiacol derivatives.
- To assess the in vitro anti-inflammatory and ROS scavenging activities of six guaiacol derivatives.
Main Methods:
- Inhibition of cyclooxygenase activity in human platelets.
- Measurement of ROS release from human polymorphonuclear leucocytes (PMNs) using luminol chemiluminescence.
- Electron Spin Resonance (ESR) with spin-trapping (DMPO) to quantify hydroxyl and superoxide radical scavenging.
Main Results:
- Curcumin and methyl ferulate were most active in PMN tests for ROS release.
- Curcumin and cyclovalone inhibited platelet cyclooxygenase activity.
- ESR studies indicated superior ROS scavenging by vanillin, methyl ferulate, and curcumin.
Conclusions:
- Curcumin and methyl ferulate demonstrate significant antioxidant and anti-inflammatory potential.
- Comparative analysis validates both biological and physico-chemical assays for assessing these compounds.