• Rangachar Poorani, Anant N Bhatt, and Undurti N Das.
• Institute of Nuclear Medicine and Allied Sciences, DRDO, Delhi, India.
• Arch Med Sci. 2020 Jan 1; 16 (6): 1448-1456.

IntroductionThe current study explored the radio-protective property of γ-linolenic acid (GLA) in C57BL/6J mice against low linear energy transfer ionizing radiation (IR; X-rays) and its modulatory effect on the production of lipid mediators such as prostaglandin E2 (PGE2), leukotriene E4 and lipoxin A4 (LXA4) in mice plasma.MethodsThe effect of GLA pre-treatment on radiation induced inflammation was assessed by estimating plasma levels of high mobility group box 1 protein (HMGB1), TMOP/NO and various anti-oxidant enzymes.Resultsγ-linolenic acid pre-treated mice exposed to lethal IR dose (7.5 Gy) showed a decrease in plasma levels of HMGB1, PGE2 and LXA4 and a fall in TMOP/NO ratio and improvement in anti-oxidant enzymes: catalase, glutathione transferase and glutathione peroxidase compared to IR mice, suggesting that GLA suppresses IR-induced inflammation and restores the pro- vs. anti-oxidant ratio to near normal, which could explain its radioprotective action.ConclusionsGLA showed radioprotective action.Copyright: © 2020 Termedia & Banach.

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