Curcumin Protects Against Radiotherapy-Induced Oxidative Injury to the Skin Publisher Pubmed



Shabeeb D^{1, 2} ; Musa AE³ ; Ali HSA⁴ ; Najafi M⁵
Source: Drug Design# Development and Therapy Published:2020

Abstract

Objective: Side-effects to normal tissues reduce the therapeutic window of radiotherapy. During radiotherapy, the skin is inevitably exposed to doses of ionizing radiation, leading to varying degrees of skin damage. Natural antioxidants have been explored for their radio-protective potentials. Thus, the present study aimed to investigate the protective effect of curcumin against radiotherapy-induced oxidative damage to the skin. Methods: Forty rats were divided into four groups as follows: vehicle control (without irradiation or drug treatment), treatment with 150 mg/kg curcumin, 10 Gy single dose irradiation only, and 150 mg/kg curcumin plus 10 Gy radiation (RC). In the treatment groups, each rat was treated orally with 150 mg/kg curcumin 1 day before irradiation to 3 consecutive days after irradiation. Weeks 1, 2, or 4 after irradiation, all rats were sacrificed and their skin tissues collected and frozen at −80°C for the determination of malondialde-hyde (MDA), catalase (CAT), superoxide dismutase (SOD), and glutathione peroxidase (GSH-Px) activity in skin tissues. Results: Radiotherapy-induced oxidative injury to the skin was evidenced by elevated MDA levels as well as depleted CAT, SOD, and GSH-Px activities. However, the administration of curcumin before and after irradiation prevented radiotherapy-induced oxidative damage by significantly elevating the activities of antioxidant enzymes. Conclusion: From the findings of the present study, curcumin showed potential for protection against radiotherapy-induced oxidative injury to the skin. However, future studies are required to evaluate its clinical efficacy. © 2020 Shabeeb et al.