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Abstract Title:

Radioprotective Role of Natural Polyphenols: From Sources to Mechanisms.

Abstract Source:

Anticancer Agents Med Chem. 2021 Apr 18. Epub 2021 Apr 18. PMID: 33874875

Abstract Author(s):

Muhammad Adnan, Azhar Rasul, Muhammad A Shah, Ghulam Hussain, Muhammad Asrar, Ammara Riaza, Iqra Sarfraza, Arif Hussaina, Khatereh Khorsandid, Ngit S Laie, Syed M Hussaina

Article Affiliation:

Muhammad Adnan

Abstract:

The identification and development of radioprotective agents has emerged as a subject matter of research during recent years due to the growing usage of ionizing radiation in different areas of human life. Previous work on synthetic radioprotectors has achieved limited progress because of the numerous issues associated with toxicity. Compounds extracted from plants have potential to serve as lead candidates for developing ideal radioprotectors due to their low cost, safety and selectivity. Polyphenols are the most abundant and commonly dispersed group of biologically active molecules possessing broad range of pharmacological activities. Polyphenols have displayed efficacy for radioprotection during various investigations and can be administered at high doses with lesser toxicity. Detoxification of free radicals, modulating inflammatory responses, DNA repair, stimulation of hematopoietic recovery, and immune functions are the main mechanisms for radiation protection with polyphenols. Epicatechin, epigallocatechin-3-gallate, apigenin, caffeic acid phenylethylester, and silibinin provide cytoprotection together with the suppression of many pro-inflammatory cytokines owing to their free radical scavenging, anti-oxidant, and anti-inflammatory properties. Curcumin, resveratrol, quercetin, gallic acid, and rutin's radioprotective properties are regulated primarily by direct or indirect decline in cellular stress. Thus, polyphenols may serve as potential candidates for radioprotection in the near future, however, extensive investigations are still required to better understand their protection mechanisms.

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