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http://dx.doi.org/10.6116/kjh.2022.37.4.39.

Ulmi Cortex Ameliorates Scopolamine-induced Memory Impairments in Mice.  

Kim, Eung-Gyu (Department of Herbology, College of Korean Medicine, Daegu Haany University)
Roh, Seong-Soo (Department of Herbology, College of Korean Medicine, Daegu Haany University)
Publication Information
The Korea Journal of Herbology / v.37, no.4, 2022 , pp. 39-48 More about this Journal
Abstract
Objectives : In the present study, we assessed the effects of water extract of Ulmus davidiana(UED) on the learning and memory impairments induced by scopolamine in mice through its favorable acetylcholinesterase (AChE) activity and antioxidant effect. Methods : The memory and cognitive enhancing effect of the UDE was investigated using a passive avoidance test, the Morris water maze test and Y-maze test in mice. In addition, to examine the mechanism of UDE using acetylcholinesterase (AChE) and antioxidant activity. Results : The water extract of UDE (100, and 200 mg/kg) significantly reversed the scopolamine-induced cognitive impairments in the passive avoidance test (P < 0.05). Moreover, UDE (100, and 200 mg/kg) also improved escape latencies in training trials and increased swimming times and distances within the target zone of the Morris water maze (P < 0.05). On the Y-maze test, UDE (100, and 200 mg/kg) also significantly reversed scopolamine-induced cognitive impairments in mice (P < 0.05). In an in vitro study, UDE was found to inhibit acetylcholinesterase, changes in neurotrophic factor (CREB), and antioxidant activity in a dose-dependent manner. Conclusions : The water extract of UDE dramatically possesses the anti-amnestic and cognitive-enhancing activities related to the memory processes, and these activities were parallel to treatment duration and dependent on the learning models. These results suggest that the administration of UDE enhances learning and memory, and that this effect is partially mediated by ERK-CREB-BDNF signaling and the survival of immature neurons.
Keywords
Ulmus davidiana; Learning and Memory; Scopolamine; acetylcholinesterase; Antioxidant; CREB;
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