PMID- 28940173 OWN - NLM STAT- MEDLINE DCOM- 20180605 LR - 20181202 IS - 1976-3786 (Electronic) IS - 0253-6269 (Linking) VI - 40 IP - 10 DP - 2017 Oct TI - Liquiritigenin ameliorates memory and cognitive impairment through cholinergic and BDNF pathways in the mouse hippocampus. PG - 1209-1217 LID - 10.1007/s12272-017-0954-6 [doi] AB - Liquiritigenin (LQ), a flavonoid extracted from the radix of Glycyrrhiza, has anti-inflammatory and neuroprotective properties. In this study, we evaluated the cognitive enhancing effects of LQ on learning and memory impairments induced by scopolamine (0.5 mg/kg, i.p.), a muscarinic antagonist, using the Y-maze, passive avoidance, and novel object recognition tests. A single administration of LQ significantly improved scopolamine-induced cognitive impairments in these behavioral tests. In addition, LQ dramatically inhibited acetylcholinesterase and thiobarbituric acid reactive substance activities in the hippocampus of scopolamine-induced mice in a dose-dependent manner. Furthermore, LQ markedly increased the protein level of brain-derived neurotrophic factor (BDNF) and phosphorylation of extracellular signal-regulated kinase (ERK) and cAMP response element binding (CREB) in the hippocampus of scopolamine-induced mice. Taken together, our results indicate that LQ may be useful for the treatment of learning and memory impairments, and that the beneficial effects of LQ are mediated, in part, by cholinergic and BDNF/ERK/CREB signaling enhancement and/or protection. FAU - Ko, Yong-Hyun AU - Ko YH AD - Department of Pharmacology, School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Republic of Korea. FAU - Kwon, Seung-Hwan AU - Kwon SH AD - Department of Pharmacology, School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Republic of Korea. FAU - Lee, Seok-Yong AU - Lee SY AD - Department of Pharmacology, School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Republic of Korea. FAU - Jang, Choon-Gon AU - Jang CG AD - Department of Pharmacology, School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Republic of Korea. jang@skku.edu. LA - eng PT - Journal Article DEP - 20170922 PL - Korea (South) TA - Arch Pharm Res JT - Archives of pharmacal research JID - 8000036 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Flavanones) RN - 0 (Neuroprotective Agents) RN - DL48G20X8X (Scopolamine) RN - EC 3.1.1.7 (Acetylcholinesterase) RN - T194LKP9W6 (liquiritigenin) SB - IM MH - Acetylcholinesterase/*metabolism MH - Animals MH - Behavior, Animal/drug effects MH - Brain-Derived Neurotrophic Factor/*metabolism MH - Cognitive Dysfunction/metabolism/*prevention & control MH - Disease Models, Animal MH - Flavanones/isolation & purification/*therapeutic use MH - Hippocampus/*drug effects/metabolism MH - Male MH - Memory Disorders/metabolism/*prevention & control MH - Mice, Inbred Strains MH - Neuroprotective Agents/isolation & purification/*therapeutic use MH - Scopolamine/administration & dosage OTO - NOTNLM OT - Alzheimer's disease OT - Brain-derived neurotrophic factor OT - Extracellular signal-regulated kinase OT - Liquiritigenin OT - Scopolamine OT - cAMP response element binding EDAT- 2017/09/25 06:00 MHDA- 2018/06/06 06:00 CRDT- 2017/09/24 06:00 PHST- 2017/06/22 00:00 [received] PHST- 2017/09/08 00:00 [accepted] PHST- 2017/09/25 06:00 [pubmed] PHST- 2018/06/06 06:00 [medline] PHST- 2017/09/24 06:00 [entrez] AID - 10.1007/s12272-017-0954-6 [pii] AID - 10.1007/s12272-017-0954-6 [doi] PST - ppublish SO - Arch Pharm Res. 2017 Oct;40(10):1209-1217. doi: 10.1007/s12272-017-0954-6. Epub 2017 Sep 22.