PMID- 28608236 OWN - NLM STAT- MEDLINE DCOM- 20180807 LR - 20220408 IS - 1573-6903 (Electronic) IS - 0364-3190 (Linking) VI - 42 IP - 10 DP - 2017 Oct TI - The Neuroprotective Effect of Curcumin Against Nicotine-Induced Neurotoxicity is Mediated by CREB-BDNF Signaling Pathway. PG - 2921-2932 LID - 10.1007/s11064-017-2323-8 [doi] AB - Nicotine abuse adversely affects brain and causes apoptotic neurodegeneration. Curcumin- a bright yellow chemical compound found in turmeric is associated with neuroprotective properties. The current study was designed to evaluate the role of CREB-BDNF signaling in mediating the neuroprotective effects of curcumin against nicotine-induced apoptosis, oxidative stress and inflammation in rats. Sixty adult male rats were divided randomly into six groups. Group 1 received 0.7 ml/rat normal saline, group 2 received 6 mg/kg nicotine. Groups 3, 4, 5 and 6 were treated concurrently with nicotine (6 mg/kg) and curcumin (10, 20, 40 and 60 mg/kg i.p. respectively) for 21 days. Open Field Test (OFT) was used to evaluate the motor activity. Hippocampal oxidative, anti-oxidant, inflammatory and apoptotic factors were evaluated. Furthermore, phosphorylated brain cyclic adenosine monophosphate (cAMP) response element binding protein (P-CREB) and brain derived neurotrophic factor (BDNF) levels were studied at gene and protein levels. We found that nicotine disturbed the motor activity in OFT and simultaneous treatment with curcumin (40 and 60 mg/kg) reduced the nicotine-induced motor activity disturbances. In addition, nicotine treatment increased lipid peroxidation and the levels of GSH, IL-1beta, TNF-alpha and Bax, while reducing Bcl-2, P-CREB and BDNF levels in the hippocampus. Nicotine also reduced the activity of superoxide dismutase, glutathione peroxidase and glutathione reductase in hippocampus. In contrast, various doses of curcumin attenuated nicotine-induced apoptosis, oxidative stress and inflammation; while elevating P-CREB and BDNF levels. Thus, curcumin via activation of P-CREB/BDNF signaling pathway, confers neuroprotection against nicotine-induced inflammation, apoptosis and oxidative stress. FAU - Motaghinejad, Majid AU - Motaghinejad M AD - Razi Drug Research Center and Department of Pharmacology, School of Medicine, Iran University of Medical Sciences, Hemmat High Way, Beside Milad Tower, P. O. Box 14496-14525, Tehran, Iran. Dr.motaghinejad6@gmail.com. FAU - Motevalian, Manijeh AU - Motevalian M AD - Razi Drug Research Center and Department of Pharmacology, School of Medicine, Iran University of Medical Sciences, Hemmat High Way, Beside Milad Tower, P. O. Box 14496-14525, Tehran, Iran. FAU - Fatima, Sulail AU - Fatima S AD - Razi Drug Research Center and Department of Pharmacology, School of Medicine, Iran University of Medical Sciences, Hemmat High Way, Beside Milad Tower, P. O. Box 14496-14525, Tehran, Iran. FAU - Faraji, Fahimeh AU - Faraji F AD - Razi Drug Research Center and Department of Pharmacology, School of Medicine, Iran University of Medical Sciences, Hemmat High Way, Beside Milad Tower, P. O. Box 14496-14525, Tehran, Iran. FAU - Mozaffari, Shiva AU - Mozaffari S AD - Polymer Engineering, Islamic Azad University of Tehran, Science and Research Branch, Tehran, Iran. LA - eng PT - Journal Article DEP - 20170612 PL - United States TA - Neurochem Res JT - Neurochemical research JID - 7613461 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Cyclic AMP Response Element-Binding Protein) RN - 0 (Neuroprotective Agents) RN - 6M3C89ZY6R (Nicotine) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/*metabolism MH - Cyclic AMP Response Element-Binding Protein/drug effects MH - Hippocampus/metabolism MH - Male MH - Neuroprotection/*drug effects MH - Neuroprotective Agents/*pharmacology MH - Neurotoxicity Syndromes/metabolism MH - Nicotine/*pharmacology MH - Oxidative Stress/*drug effects MH - Rats MH - Signal Transduction/drug effects OTO - NOTNLM OT - BDNF OT - CREB OT - Curcumin OT - Neurodegeneration OT - Nicotine EDAT- 2017/06/14 06:00 MHDA- 2018/08/08 06:00 CRDT- 2017/06/14 06:00 PHST- 2016/09/30 00:00 [received] PHST- 2017/06/02 00:00 [accepted] PHST- 2017/05/16 00:00 [revised] PHST- 2017/06/14 06:00 [pubmed] PHST- 2018/08/08 06:00 [medline] PHST- 2017/06/14 06:00 [entrez] AID - 10.1007/s11064-017-2323-8 [pii] AID - 10.1007/s11064-017-2323-8 [doi] PST - ppublish SO - Neurochem Res. 2017 Oct;42(10):2921-2932. doi: 10.1007/s11064-017-2323-8. Epub 2017 Jun 12.