Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Comparative Study
. 2005 Aug;276(1-2):31-7.
doi: 10.1007/s11010-005-2734-8.

Comparative Analysis of the Protective Effects of Melatonin and Caffeic Acid Phenethyl Ester (CAPE) on Mobile Phone-Induced Renal Impairment in Rat

Comparative Study

Comparative Analysis of the Protective Effects of Melatonin and Caffeic Acid Phenethyl Ester (CAPE) on Mobile Phone-Induced Renal Impairment in Rat

Fehmi Ozguner et al. Mol Cell Biochem. .


Melatonin and caffeic acid phenethyl ester (CAPE), a component of honeybee propolis, were recently found to be potent free radical scavengers and antioxidants. There are a number of reports on the effects induced by electromagnetic radiation (EMR) in various cellular systems. Mechanisms of adverse effects of EMR indicate that reactive oxygen species may play a role in the biological effects of this radiation. The present study was carried out to compare the protective effects of melatonin and CAPE against 900 MHz EMR emitted mobile phone-induced renal tubular injury. Melatonin was administered whereas CAPE was given for 10 days before the exposure. Urinary N-acetyl-beta-D-glucosaminidase (NAG, a marker of renal tubular injury) and malondialdehyde (MDA, an index of lipid peroxidation), were used as markers of oxidative stress-induced renal impairment in rats exposed to EMR. Superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-Px) activities were studied to evaluate the changes of antioxidant status in renal tissue. Urinary NAG and renal MDA were increased in EMR exposed rats while both melatonin and CAPE caused a significant reduction in the levels of these parameters. Likewise, renal SOD and GSH-Px activities were decreased in EMR exposed animals while melatonin caused a significant increase in the activities of these antioxidant enzymes but CAPE did not. Melatonin caused a significant decrease in urinary NAG activity and MDA levels which were increased because of EMR exposure. CAPE also reduced elevated MDA levels in EMR exposed renal tissue, but the effect of melatonin was more potent than that of CAPE. Furthermore, treatment of EMR exposed rats with melatonin increased activities of SOD and GSH-Px to higher levels than those of control rats. In conclusion, melatonin and CAPE prevent renal tubular injury by reducing oxidative stress and protect the kidney from oxidative damage induced by 900 MHz mobile phone. Nevertheless, melatonin seems to be a more potent antioxidant compared with CAPE in kidney.

Similar articles

See all similar articles

Cited by 9 articles

See all "Cited by" articles


    1. Clin Chem. 1972 Jan;18(1):5-25 - PubMed
    1. Rinsho Byori. 1983 Sep;Spec No 56:90-101 - PubMed
    1. Clin Chim Acta. 2004 Feb;340(1-2):153-62 - PubMed
    1. J Pineal Res. 1999 Sep;27(2):122-8 - PubMed
    1. Clin Chem. 1988 Mar;34(3):497-500 - PubMed

Publication types

MeSH terms