Neuro-protective Effect of Acetyl-11-keto-β-boswellic Acid in a Rat Model of Scopolamine-induced Cholinergic Dysfunction

Author:

Assaran Amir Hossein12,Hosseini Mahmoud1234,Shirazinia Matin4,Eshaghi Ghalibaf Mohammad Hosein3,Beheshti Farimah56,Mobasheri Leila7,Mirzavi Farshad8,Rajabian Arezoo49

Affiliation:

1. Psychiatry and Behavioral Sciences Research Center, Mashhad University of Medical Sciences, Mashhad, Iran

2. Department of Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran

3. Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran

4. Neuroscience Research Center, Mashhad University of Medical Sciences, Mashhad, Iran

5. Neuroscience Research Center, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran

6. Department of Physiology, School of Medical Sciences, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran

7. Department of Pharmacology, Mashhad University of Medical Sciences, Mashhad, Iran

8. Cardiovascular Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran

9. Department of Neuroscience, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran

Abstract

Background:: Acetyl-11-keto-β-boswellic acid (AKBA) is a major component of the oleo-gum resin of B. serrata with multiple pharmacological activities. The objective of this study was to explore the underlying mechanisms of neuroprotective potential of AKBA against scopolamine-mediated cholinergic dysfunction and memory deficits in rats. Methods:: The rats received AKBA (2.5, 5, and 10 mg/kg, oral) for 21 days. In the third week, scopolamine was administered 30 min before the Morris water maze and passive avoidance tests. In order to perform biochemical assessments, the hippocampus and prefrontal cortex were extracted from the rats euthanized under deep anesthesia. Results:: In the MWM test, treatment with AKBA (5 and 10 mg/kg) decreased the latency and distance to find the platform. Moreover, in the PA test, AKBA remarkably increased latency to darkness and stayed time in lightness while decreasing the frequency of entry and time in the darkness. According to the biochemical assessments, AKBA decreased acetylcholinesterase activity and malondialdehyde levels while increasing antioxidant enzymes and total thiol content. Furthermore, AKBA administration restored the hippocampal mRNA and protein levels of brain-derived neurotrophic factor (BDNF) and mRNA expression of B-cell lymphoma (Bcl)- 2 and Bcl-2- associated X genes in brain tissue of scopolamine-injured rats. Conclusion:: The results suggested the effectiveness of AKBA in preventing learning and memory dysfunction induced by scopolamine. Accordingly, these protective effects might be produced by modulating BDNF, cholinergic system function, oxidative stress, and apoptotic markers.

Funder

Mashhad University of Medical Sciences

Publisher

Bentham Science Publishers Ltd.

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