Radioprotection by two phenolic compounds: Chlorogenic and quinic acid, on X-ray induced DNA damage in human blood lymphocytes in vitro

• Published in: Food and chemical toxicology 2013-03, Vol.53, p.359-363
• Main Authors: Cinkilic, Nilufer, Cetintas, Sibel Kahraman, Zorlu, Tolga, Vatan, Ozgur, Yilmaz, Dilek, Cavas, Tolga, Tunc, Sema, Ozkan, Lutfi, Bilaloglu, Rahmi
• Format: Article
• Language: English
• Subjects: Adult; Biological and medical sciences; Biological effects of radiation; Chlorogenic acid; Chlorogenic Acid - pharmacology; Comet Assay; DNA damage; DNA Damage - drug effects; Dose-Response Relationship, Drug; Dose-Response Relationship, Radiation; Female; Fundamental and applied biological sciences. Psychology; Humans; Ionizing radiations; Lymphocytes - drug effects; Lymphocytes - radiation effects; Male; Medical sciences; Quinic acid; Quinic Acid - pharmacology; Radiation-Protective Agents - pharmacology; Radioprotection; Tissues, organs and organisms biophysics; Toxicology; X-ray irradiation; X-Rays - adverse effects; Young Adult
• ISSN: 0278-6915; 1873-6351
• DOI: 10.1016/j.fct.2012.12.008

[Display omitted] ► Radioprotectivity of quinic and chlorogenic acid was evaluated in vitro. ► All concentrations of quinic acid and chlorogenic acid did not induce DNA damage. ► For both phenolics maximum damage protection was seen at the 4μg/ml concentration. ► Both phenolics decreased the DNA damage and showed significant radioprotectivity. The present study was designed to determine the radioprotective effect of two phytochemicals, namely, quinic acid and chlorogenic acid, against X-ray irradiation-induced genomic instability in non-tumorigenic human blood lymphocytes. The protective ability of two phenolic acids against radiation-induced DNA damage was assessed using the alkaline comet assay in human blood lymphocytes isolated from two healthy human donors. A Siemens Mevatron MD2 (Siemens AG, USA, 1994) linear accelerator was used for irradiation. The results of the alkaline comet assay revealed that quinic acid and chlorogenic acid decreased the DNA damage induced by X-ray irradiation and provided a significant radioprotective effect. Quinic acid decreased the presence of irradiation-induced DNA damage by 5.99–53.57% and chlorogenic acid by 4.49–48.15%, as determined by the alkaline comet assay. The results show that quinic acid and chlorogenic acid may act as radioprotective compounds. Future studies should focus on determining the mechanism by which these phenolic acids provide radioprotection.