Effect of Pentoxifylline on Ischemia- induced Brain Damage and Spatial Memory Impairment in Rat

Document Type: Original Article

Authors

1 Anatomy Department, Tehran Medical Branch, Islamic Azad University, Tehran, Iran

2 Anatomy Department, Tehran University of Medical Sciences, Tehran, Iran

3 Genetic Department, Tehran Medical Branch, Islamic Azad University, Tehran, Iran

4 Pharmaceutical Science Branch & Pharmaceutical Science Research Centre, Islamic Azad University, Tehran, Iran

5 Cellular & Molecular Research Centre, Tehran University of Medical Sciences, Tehran, Iran

Abstract

Objective(s)
The brief interruption of cerebral blood flow causes permanent brain damage and behavioral dysfunction. The hippocampus is highly vulnerable to ischemic insults, particularly the CA1 pyramidal cell layer. There is no effective pharmacological strategy for improving brain tissue damage induced by cerebral ischemia. Previous studies reported that pentoxifylline (PTX) has a neuroprotective effect on brain trauma. The possible neuroprotector effects of PTX on behavioral deficit were studied in male Wistar rats subjected to a model of transient global brain ischemia.
Materials and Methods
Animals (n= 32) were assigned to control, sham-operated, vehicle, and PTX- treated (200 mg/kg IP) groups. PTX administered at 1hr before and 3 hr after ischemia. Global cerebral ischemia was induced by bilateral common carotid artery occlusion, followed by reperfusion.
Results
Morris Water maze testing revealed that PTX administration in cerebral ischemia significantly improved hippocampal-dependent memory and cognitive spatial abilities after reperfusion as compared to sham-operated and vehicle-treated animals. After the behavioral test, the rats were sacrificed and brain sections were stained with Nissl staining. There were no significant differences between number of pyramidal cells in both control and PTX groups.
Conclusion
Our study demonstrated that pentoxifylline had a protective effect on rats with transient global ischemia and could reduce cognitive impairment.

Keywords


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