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Abstract Title:

The effect of melatonin on the liver of rats exposed to microwave radiation.

Abstract Source:

Bratisl Lek Listy. 2015 ;116(2):96-100. PMID: 25665474

Abstract Author(s):

B Djordjevic, D Sokolovic, G Kocic, A Veljkovic, M Despotovic, J Basic, T Jevtovic-Stoimenov, D M Sokolovic

Article Affiliation:

B Djordjevic

Abstract:

OBJECTIVES: We aimed to clarify if melatonin treatment (2 mg/kg i.p.) may favorably impact the liver tissue in rats exposed to microwave radiation. The experiment was performed on 84 six-weeks-old Wistar male rats exposed for 4h a day, for 20, 40 and 60 days, respectively, to microwaves (900 MHz, 100-300 microT, 54-160 V/m). Rats were divided in to four groups: I (control) - rats treated with saline, II (Mel) - rats treated with melatonin, III (MWs) - microwave exposed rats, IV (MWs + Mel) - MWs exposed rats treated with melatonin. We evaluated oxidative stress parameters (malondialdehyde and carbonyl group content), catalase, xanthine oxidase, deoxyribonuclease I and II activity.

BACKGROUND: Oxidative stress is the key mechanism of the microwave induced tissue injury. Melatonin, a lipophilic indoleamine primarily synthesized and released from the pineal gland is a powerful antioxidant.

RESULTS: Exposure to microwaves caused an increase in malondialdehyde after 40 (p<0.01), protein carbonyl content after 20 (p<0.05), catalase (p<0.05) and xantine oxidase activity (p<0.05) after 40 days. Increase in deoxyribonuclease I activity was observed after 60 days (p<0.05), while deoxyribonuclease II activity was unaffected. Melatonin treatment led to malondialdehyde decrease after 40 days (p<0.05), but surprisingly had no effect on other analyzed parameters.

CONCLUSION: Melatonin exerts certain antioxidant effects in the liver of rats exposed to microwaves, by diminishing the intensity of lipid peroxidation(Fig. 6, Ref. 32).

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