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Effect of Fermented Spirulina maxima Extract on Cognitive-Enhancing Activities in Mice with Scopolamine-Induced Dementia
Joint Authors
Kang, Do Hyung
Lee, Hyeon Yong
Choi, Woon Yong
Source
Evidence-Based Complementary and Alternative Medicine
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-11-26
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
This work provides the first demonstration that Spirulina maxima extract fermented with the lactic acid bacterium Lactobacillus planetarium HY-08 has the ability to ameliorate scopolamine-induced memory impairment in mice.
The fermented extract exhibited good cognitive-enhancing activities, as demonstrated through Morris water maze and passive avoidance experiments: in these tests, the mice administered the fermented extract at a dose of 400 mg/kg exhibited an escape latency time and a latency time of 88.5 and 76.0 sec, respectively, whereas those administered donepezil, which was used as a positive control, showed an escape latency time and a latency time of 81.3 and 83.3 sec, respectively.
However, an extract of 200 mg/kg was considered economically feasible for maintaining relatively high memory-improving activities because only a slight difference in activities was found between 200 and 400 mg/kg.
The study also provides the first demonstration that β-carotene, one of the major bioactive substances in S.
maxima, has memory-enhancing activity.
A detailed analysis of the mechanism for the cognitive-enhancing activities of the fermented extract revealed that the fermented extract effectively increased the phosphorylation of both extracellular signal-regulated kinases (p-ERK) and p-cAMP response element-binding protein (p-CREB) and sequentially upregulated the expression of brain-derived neurotrophic factor (BDNF), whose signaling pathway responds to a reduction in oxidative stress in the brain.
The results indicate that the improved efficacy of the fermented extract was likely due to the synergistic effects of β-carotene and other bioactive substances.
Therefore, it can be concluded that the fermented extract exerts memory-improving effects in the hippocampus of scopolamine-treated mice through an initial increase in ERK signaling and a sequential induction of the expression of p-CREB and BDNF, and these effects are related to the antioxidant activities of β-carotene and other components.
American Psychological Association (APA)
Choi, Woon Yong& Kang, Do Hyung& Lee, Hyeon Yong. 2018. Effect of Fermented Spirulina maxima Extract on Cognitive-Enhancing Activities in Mice with Scopolamine-Induced Dementia. Evidence-Based Complementary and Alternative Medicine،Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1156121
Modern Language Association (MLA)
Choi, Woon Yong…[et al.]. Effect of Fermented Spirulina maxima Extract on Cognitive-Enhancing Activities in Mice with Scopolamine-Induced Dementia. Evidence-Based Complementary and Alternative Medicine No. 2018 (2018), pp.1-9.
https://search.emarefa.net/detail/BIM-1156121
American Medical Association (AMA)
Choi, Woon Yong& Kang, Do Hyung& Lee, Hyeon Yong. Effect of Fermented Spirulina maxima Extract on Cognitive-Enhancing Activities in Mice with Scopolamine-Induced Dementia. Evidence-Based Complementary and Alternative Medicine. 2018. Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1156121
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1156121