Neuroprotective effect of forsythiaside against transient cerebral global ischemia in gerbil.

Abstract

Forsythiaside, a phenylethanoside, has been reported to have anti-oxidative activity and memory ameliorating effects against a scopolamine-induced memory deficit model. The aim of this study was to determine whether forsythiaside has neuroprotective activity on transient cerebral global ischemia in gerbil. Transient cerebral ischemia was induced by bilateral common carotid artery occlusion for 5 min and followed by reperfusion for 7 days. Oral administration of forsythiaside was conducted immediately after reperfusion and once a day over the next 7 days. The forsythiaside administration significantly increased the number of viable neurons detected by neuronal nuclei immunostaining and decreased degenerating neuronal cells detected by Fluoro-Jade B staining in the hippocampal CA1 region, at the 7th day post-ischemia (P<0.05). Forsythiaside also significantly decreased the number of ionized calcium-binding adaptor molecule-1-detected activated microglia and glial fibrillary acidic protein-detected astrocytes, both of which were increased after ischemic insults, and decreased interleukin-1β and tumor necrosis factor-α expression levels, which were also increased after the insults (P<0.05). In addition, forsythiaside significantly improved ischemia-induced cognitive impairments in the Y-maze task (P<0.05). These results suggest that forsythiaside exhibits neuroprotective properties, which are, in part, mediated by its anti-inflammatory activities supported by forsythiaside-induced reductions of activated glial cells and expression levels of interleukin-1β and tumor necrosis factor-α.

• Authors: Jong Min Kim, Sunho Kim, Dong Hyun Kim, Choong Ho Lee, Se Jin Park, Ji Wook Jung, Kwang Ho Ko, Jae Hoon Cheong, Seung Ho Lee, Jong Hoon Ryu
• Journal: European journal of pharmacology (Eur J Pharmacol) Vol. 660 Issue 2-3 Pg. 326-33 (Jun 25 2011) ISSN: 1879-0712 [Electronic] Netherlands
• PMID: 21501605 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2011 Elsevier B.V. All rights reserved.

Chemical References

• Glycosides
• Interleukin-1beta
• Neuroprotective Agents
• Tumor Necrosis Factor-alpha
• forsythiaside

Topics

• Animals
• Astrocytes (drug effects, pathology)
• Carotid Stenosis (complications)
• Cell Death (drug effects)
• Gene Expression Regulation (drug effects)
• Gerbillinae
• Glycosides (pharmacology, therapeutic use)
• Hippocampus (drug effects, pathology)
• Interleukin-1beta (metabolism)
• Ischemic Attack, Transient (drug therapy, etiology, metabolism, pathology)
• Maze Learning (drug effects)
• Memory Disorders (etiology, physiopathology)
• Microglia (drug effects, pathology)
• Neurons (drug effects, pathology)
• Neuroprotective Agents (pharmacology, therapeutic use)
• Tumor Necrosis Factor-alpha (metabolism)