In vivo radioprotection with garlic extract

Area of Science:

• Biochemistry
• Radiation Biology
• Pharmacology

Background:

• Gamma radiation exposure can cause significant chromosomal damage.
• Oxidative stress and depletion of cellular antioxidants are key mechanisms of radiation-induced damage.
• Natural compounds are being investigated for their potential radioprotective properties.

Purpose of the Study:

• To evaluate the radioprotective potential of garlic extract against gamma-radiation-induced chromosomal damage in mice.
• To investigate the effects of garlic extract on sulfhydryl content and glutathione S-transferase activity following radiation exposure.

Main Methods:

• The mouse bone marrow micronucleus test was employed to assess chromosomal damage.
• Garlic extract (125, 250, 500 mg/kg) was administered orally for 5 days prior to gamma irradiation (0.25-2 Gy).
• Biochemical assays measured sulfhydryl content and glutathione S-transferase activity.

Main Results:

• Garlic extract pre-treatment significantly reduced the frequency of micronucleated polychromatic erythrocytes in a dose-dependent manner.
• An anticlastogenic effect was observed at radiation doses of 0.5 and 1 Gy, but not 0.25 Gy.
• Irradiation and garlic extract increased sulfhydryl content and glutathione S-transferase activity, but co-administration led to a significant reduction.

Conclusions:

• Garlic extract exhibits significant radioprotective effects against gamma radiation-induced chromosomal damage in mice.
• The observed effects may be related to the modulation of cellular antioxidant systems, including sulfhydryl content and glutathione S-transferase.
• Further research into garlic extract as a natural radioprotector is warranted.