Research Article | Volume : 2 Issue : 3, March 2012

Neuroprotective effect of spiradoline and naloxone in focal cerebral ischemia: Promising behavioral and biochemical changes in Wistar rats

Binayak Deb Ch. Sreenath M. N. Satish Kumar K. Elango   

Open Access    DOI: 10.7324/JAPS.2012.2318


Brain ischemia modulates endogenous opioids production and the expression of opioid receptors. The present investigations aim to determine the neuroprotective effect of Spiradoline and Naloxone, administered intraperitoneally, against carotid artery occlusion induced cerebral ischemia in adult male Wistar rats. The ischemic assessment was carried out by evaluation of behavioral (cognitive and sensorimotor), and biochemical (antioxidants, acetylcholinesterase, brain swelling and hemispheric water content) parameters. The groups included sham-operated control, vehicle control, spiradoline-treated and naloxone-treated rats. Carotid artery occlusion induced behavioral impairment as per 8-arm radial maze, elevated plus maze, sensorimotor deficits, free radical production and biochemical changes. The results revealed that spiradoline significantly (p<0.05) antagonized the cognitive and sensorimotor deficits, indicated by reduced working memory errors, increased transfer latency time, and neurologic scores on 24 h and day 7 after ischemia, while naloxone produced transient improvement. The drugs significantly (p<0.05) restored the levels of antioxidants, and acetylcholinesterase on day 7. The brain edema development was significantly antagonized by spiradoline while naloxone showed lesser improvement. The results implied that the opioid agonist spiradoline has better efficacy than opioid antagonist naloxone for brain stroke therapy at tested doses, and spiradoline may be used in future combination therapies as a neuroprotective drug.

Keyword:     Spiradolinenaloxoneocclusionbehaviorantioxidants.

Copyright:The Author(s). This is an open access article distributed under the Creative Commons Attribution Non-Commercial License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

HTML Full Text


Article Metrics
366 Views 45 Downloads 411 Total



Related Search

By author names