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Metal chelating and hydrogen peroxide scavenging effects of melatonin *

Antioxidant activity of a molecule is attributed to various mechanisms such as prevention of chain initiation, binding of transition metal ion catalysts and decomposition of peroxides. This study was aimed at evaluating the metal chelating and hydrogen peroxide (H2O2) scavenging activity of melatonin. The metal chelating and H2O2 scavenging activity increased with increasing concentrations of melatonin (20–60 μg/mL). α-Tocopherol, butylated hydroxyanisole (BHA), and butylated hydroxytoluene (BHT) were used as standards. Sixty micrograms per milliliter concentration of melatonin exhibited 95% chelating effect on ferrous ions and scavenged 83% of H2O2. On the other hand, the same concentration of α-tocopherol, BHA, and BHT exhibited 58, 61, and 72% inhibition, respectively, of the formation of the Fe2+–ferrozine complex and scavenged 48, 20, and 23%, respectively, of H2O2. Based on these results, it is concluded that melatonin is an effective metal chelating agent and scavenger of H2O2. These properties may be major reasons for the melatonin's ability to inhibit lipid peroxidation.

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As with any procedure, there could be pain or other substantial risks involved. These concerns should be discussed with your health care provider prior to any treatment so that you have proper informed consent and understand that there are no guarantees to healing.

THE INFORMATION IN THIS WEBSITE IS OFFERED FOR GENERAL EDUCATIONAL PURPOSES ONLY AND DOES NOT IMPLY OR GIVE MEDICAL ADVICE. No Doctor/Patient relationship shall be deemed to have arisen simply by reading the information contained on these pages, and you should consult with your personal physician/care giver regarding your medical treatment before undergoing any sort of treatment or therapy.

Published on 11-03-2008
Authors: ?lhami Gulcin 1 , Mehmet Emin Buyukokuroglu 2 and O. Irfan Kufrevioglu 1
Source: Journal of Pineal Research Volume 34 Issue 4, Pages 278 - 281