Effects of pregabalin on brain edema, neurologic and histologic outcomes in experimental traumatic brain injury

Area of Science:

• Neuroscience
• Pharmacology
• Trauma Research

Background:

• Traumatic brain injury (TBI) frequently causes brain edema and increased intracranial pressure (ICP), leading to neurological deficits and mortality.
• Pregabalin has demonstrated potential neuroprotective properties in various neurological conditions.

Purpose of the Study:

• To investigate the neuroprotective effects of pregabalin in an experimental model of traumatic brain injury (TBI) in male rats.
• To assess the impact of pregabalin on brain edema, intracranial pressure (ICP), and neurological outcomes following TBI.

Main Methods:

• Adult male Wistar rats were subjected to TBI using the Marmarou method and treated with pregabalin (30 or 60 mg/kg) or vehicle 30 minutes post-injury.
• Measurements included brain water content, Evans blue content, histopathological analysis, ICP monitoring, and the Veterinary Coma Scale (VCS) at various time points post-TBI.

Main Results:

• The 60 mg/kg pregabalin group exhibited significantly reduced brain water content, decreased ICP, and improved VCS scores compared to the vehicle group (P < 0.05).
• Pregabalin administration also led to a reduction in brain edema and apoptosis.
• Delayed but significant improvements in ICP and neurological outcomes were observed following post-TBI pregabalin administration.

Conclusions:

• Post-injury administration of pregabalin demonstrates significant neuroprotective effects in experimental TBI, mitigating brain edema and improving neurological function.
• Pregabalin offers a potential therapeutic strategy for managing TBI, although the precise mechanisms require further investigation.