PMID- 27505300 OWN - NLM STAT- MEDLINE DCOM- 20170302 LR - 20171009 IS - 1873-2682 (Electronic) IS - 1011-1344 (Linking) VI - 162 DP - 2016 Sep TI - Radio-protective effect of some new curcumin analogues. PG - 694-702 LID - S1011-1344(16)30238-X [pii] LID - 10.1016/j.jphotobiol.2016.08.002 [doi] AB - In the present study, novel symmetrical curcumin analogues (2-7) have been synthesized by substituting the phenolic OH of curcumin with different linkers providing additional keto-enol tautomerism, very essential for radioprotective activity. The structures of the synthesized compounds (2-7) were elucidated by elemental analysis, IR, (1)H-NMR, (13)C-NMR and mass spectral data and were found consistent with the assigned structures. The curative effect of these new compounds, against the oxidative stress due to exposure of rats to the whole body gamma-irradiation (7Gy) was investigated. Gamma-irradiated rats exhibited elevations of ALT, AST activities, urea, creatinine, triglycerides, total cholesterol, malondialdehyde (MDA), nitric oxide (NO), Interleukin-6 (IL-6), Tumor Necrosis Factor-alpha (TNF-alpha) and Nuclear Factor-kappa B (NF-kappaB) levels. Contrariwise, the total protein, albumin, total calcium level, SOD, CAT, GSH-Px, GST activities and GSH content were decreased. Treatment of gamma-irradiated rats with the new curcumin analogues (2-7) showed significant amelioration in the in-vivo antioxidant status, liver and kidney functions, as well as the anti-inflammatory markers (IL-6, TNF-alpha and NF-kappaB). Inhibition of NF-kappaB could be responsible for the improvement of the antioxidant and anti-inflammatory status in gamma-irradiated animals, by down-regulation of IL-1beta and TNF-alpha level. In conclusion, the new curcumin analogues (2-7) exhibited post-protective effect on gamma-irradiation, by NF-kappaB inhibition. CI - Copyright (c) 2016 Elsevier B.V. All rights reserved. FAU - El-Gazzar, Marwa G AU - El-Gazzar MG AD - Drug Radiation Research Department, National Center for Radiation Research & Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), 3 Ahmed El-Zomor St., P.O. Box: 29, Nasr City, Cairo, Egypt. Electronic address: marwa.galal@eaea.org.eg. FAU - Zaher, Nashwa H AU - Zaher NH AD - Drug Radiation Research Department, National Center for Radiation Research & Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), 3 Ahmed El-Zomor St., P.O. Box: 29, Nasr City, Cairo, Egypt. FAU - El-Hossary, Ebaa M AU - El-Hossary EM AD - Drug Radiation Research Department, National Center for Radiation Research & Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), 3 Ahmed El-Zomor St., P.O. Box: 29, Nasr City, Cairo, Egypt. FAU - Ismail, Amel F M AU - Ismail AFM AD - Drug Radiation Research Department, National Center for Radiation Research & Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), 3 Ahmed El-Zomor St., P.O. Box: 29, Nasr City, Cairo, Egypt. LA - eng PT - Journal Article DEP - 20160802 PL - Switzerland TA - J Photochem Photobiol B JT - Journal of photochemistry and photobiology. B, Biology JID - 8804966 RN - 0 (Antioxidants) RN - 0 (Biomarkers) RN - 0 (Interleukin-6) RN - 0 (NF-kappa B) RN - 0 (Radiation-Protective Agents) RN - 0 (Tumor Necrosis Factor-alpha) RN - 4Y8F71G49Q (Malondialdehyde) RN - 97C5T2UQ7J (Cholesterol) RN - EC 1.11.1.6 (Catalase) RN - EC 1.11.1.9 (Glutathione Peroxidase) RN - EC 1.15.1.1 (Superoxide Dismutase) RN - IT942ZTH98 (Curcumin) SB - IM MH - Animals MH - Antioxidants/metabolism MH - Biomarkers/blood MH - Catalase/metabolism MH - Cholesterol/blood MH - Curcumin/analogs & derivatives/chemical synthesis/*pharmacology MH - Down-Regulation/*drug effects/radiation effects MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Gamma Rays MH - Glutathione Peroxidase/metabolism MH - Interleukin-6/blood MH - Magnetic Resonance Spectroscopy MH - Malondialdehyde/blood MH - NF-kappa B/blood MH - Oxidative Stress/*drug effects/radiation effects MH - Radiation-Protective Agents/chemical synthesis/chemistry/*pharmacology MH - Rats MH - Rats, Wistar MH - Spectrophotometry, Infrared MH - Superoxide Dismutase/metabolism MH - Tumor Necrosis Factor-alpha/blood OTO - NOTNLM OT - Anti-inflammatory OT - Antioxidant OT - Curcumin OT - Gamma radiation OT - Nuclear Factor-kappa B OT - Radio-protective EDAT- 2016/08/10 06:00 MHDA- 2017/03/03 06:00 CRDT- 2016/08/10 06:00 PHST- 2016/04/05 00:00 [received] PHST- 2016/08/01 00:00 [accepted] PHST- 2016/08/10 06:00 [entrez] PHST- 2016/08/10 06:00 [pubmed] PHST- 2017/03/03 06:00 [medline] AID - S1011-1344(16)30238-X [pii] AID - 10.1016/j.jphotobiol.2016.08.002 [doi] PST - ppublish SO - J Photochem Photobiol B. 2016 Sep;162:694-702. doi: 10.1016/j.jphotobiol.2016.08.002. Epub 2016 Aug 2.