PMID- 30588862 OWN - NLM STAT- MEDLINE DCOM- 20190902 LR - 20190902 IS - 1537-6524 (Electronic) IS - 1537-6516 (Linking) VI - 29 IP - 5 DP - 2019 Jun TI - Neuromodulatory potential of phenylpropanoids; para-methoxycinnamic acid and ethyl-p-methoxycinnamate on aluminum-induced memory deficit in rats. PG - 334-343 LID - 10.1080/15376516.2018.1561779 [doi] AB - Para-methoxycinnamic acid (PMCA) and Ethyl-p-methoxycinnamate (EPMC) are reported to possess neuroprotective effect in reversing an acute memory deficit. However, there is a dearth of evidence for their therapeutic effect in chronic memory deficit. Thus, there is a scope to study these derivatives against the chronic model of cognitive dysfunction. The present study was aimed to determine the cognitive enhancing activity of PMCA and EPMC in aluminum-induced chronic dementia. Cognitive enhancing property of PMCA and EPMC was assessed using Morris water maze by analyzing spatial memory parameters such as escape latency, D-quadrant latency, and island entries. To find a possible mechanism, the effect of test compounds on altered acetylcholinesterase (AChE) activity and oxidative stress was determined in the hippocampus and frontal cortex of rats. Docking interaction of these derivatives with acetylcholinesterase enzyme and glutamate receptors was also studied. Treatment with PMCA and EPMC showed a significant improvement in spatial memory markers and altered hippocampal AChE activity in rats with cognitive dysfunction. The implication of hippocampal and cortical oxidative stress in memory impairment was confirmed with decreased catalase/increased thiobarbituric acid reactive substances (TBARS) in rats. PMCA and EPMC reversed the oxidative stress in the brain by negatively affecting TBARS levels. Against depleted catalase levels, PMCA was more effective than EPMC in raising the depleted catalase levels. In silico analysis revealed poor affinity of EPMC and PMCA with AChE enzyme and glutamate receptor. To conclude, PMCA and EPMC exerted cognitive enhancing property independent of direct AChE and glutamate receptor inhibition. FAU - Rijal, Samita AU - Rijal S AD - a Department of Pharmacology, Manipal College of Pharmaceutical Sciences , Manipal Academy of Higher Education , Manipal , India. FAU - Changdar, Nilanjan AU - Changdar N AD - a Department of Pharmacology, Manipal College of Pharmaceutical Sciences , Manipal Academy of Higher Education , Manipal , India. FAU - Kinra, Manas AU - Kinra M AD - a Department of Pharmacology, Manipal College of Pharmaceutical Sciences , Manipal Academy of Higher Education , Manipal , India. FAU - Kumar, Ayush AU - Kumar A AD - a Department of Pharmacology, Manipal College of Pharmaceutical Sciences , Manipal Academy of Higher Education , Manipal , India. FAU - Nampoothiri, Madhavan AU - Nampoothiri M AD - a Department of Pharmacology, Manipal College of Pharmaceutical Sciences , Manipal Academy of Higher Education , Manipal , India. FAU - Arora, Devinder AU - Arora D AD - b School of Pharmacy and Pharmacology , QUM, MHIQ, Griffith University , Queensland , Australia. FAU - Shenoy, Rekha R AU - Shenoy RR AD - a Department of Pharmacology, Manipal College of Pharmaceutical Sciences , Manipal Academy of Higher Education , Manipal , India. FAU - Ranganath Pai, K Sreedhara AU - Ranganath Pai KS AUID- ORCID: 0000-0002-2017-9533 AD - a Department of Pharmacology, Manipal College of Pharmaceutical Sciences , Manipal Academy of Higher Education , Manipal , India. FAU - Joseph, Alex AU - Joseph A AD - c Department of Pharmaceutical Chemistry , Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education , Manipal , India. FAU - Mudgal, Jayesh AU - Mudgal J AUID- ORCID: 0000-0001-8190-7031 AD - a Department of Pharmacology, Manipal College of Pharmaceutical Sciences , Manipal Academy of Higher Education , Manipal , India. LA - eng PT - Journal Article DEP - 20190204 PL - England TA - Toxicol Mech Methods JT - Toxicology mechanisms and methods JID - 101134521 RN - 0 (Cinnamates) RN - 0 (Neuroprotective Agents) RN - 0 (ethyl 4-methoxycinnamate) RN - 6G4ML8401A (4-methoxycinnamic acid) RN - CPD4NFA903 (Aluminum) RN - EC 3.1.1.7 (Acetylcholinesterase) SB - IM MH - Acetylcholinesterase/metabolism MH - Aluminum/*toxicity MH - Animals MH - Avoidance Learning/drug effects MH - Behavior, Animal/drug effects MH - Cinnamates/*pharmacology MH - Frontal Lobe/drug effects/enzymology MH - Hippocampus/drug effects/enzymology MH - Male MH - Maze Learning/drug effects MH - Memory Disorders/chemically induced/*prevention & control MH - Molecular Docking Simulation MH - Neuroprotective Agents/*pharmacology MH - Oxidative Stress/drug effects MH - Rats, Wistar MH - Spatial Memory/drug effects OTO - NOTNLM OT - -methoxycinnamic acid OT - Acetylcholinesterase OT - dementia OT - docking OT - ethyl--methoxycinnamate EDAT- 2018/12/28 06:00 MHDA- 2019/09/03 06:00 CRDT- 2018/12/28 06:00 PHST- 2018/12/28 06:00 [pubmed] PHST- 2019/09/03 06:00 [medline] PHST- 2018/12/28 06:00 [entrez] AID - 10.1080/15376516.2018.1561779 [doi] PST - ppublish SO - Toxicol Mech Methods. 2019 Jun;29(5):334-343. doi: 10.1080/15376516.2018.1561779. Epub 2019 Feb 4.