Turkish Neurosurgery
Amantadine’s neuroprotective effects in rabbit spinal cord ischemia/reperfusion model
Caner Unluer1, Pinar Kuru Bektasoglu2, Berrin İmge Erguder3, Ata Turker Arikok4, İlcim Ermutlu5, Bora Gurer6, Hayri Kertmen1
1University of Health Sciences, Ankara Etlik City Hospital, Department of Neurosurgery, Ankara,
2Turkish Ministry of Health, University of Health Sciences, Fatih Sultan Mehmet Education and Research Hospital, Department of Neurosurgery, Istanbul,
3Ankara University School of Medicine, Department of Biochemistry, Ankara,
4University of Health Sciences, Ankara Etlik City Hospital, Department of Pathology, Ankara,
5Cizre State Hospital, Department of Neurosurgery, Sirnak,
6Istinye University Faculty of Medicine, Department of Neurosurgery, Istanbul,
DOI: 10.5137/1019-5149.JTN.45875-23.3

Aim:This study used an experimental rabbit spinal cord ischemia-reperfusion injury (SCIRI) model to examine the effects of amantadine, a drug with neuroprotective and anti-inflammatory activities, on oxidative stress, tissue necrosis, apoptosis, and neurological recovery.Material and Methods:Rabbits were randomized into five groups: control, ischemia, vehicle, methylprednisolone (MP), and amantadine (AMT). At 24th-hour neurological examination was performed, spinal cord tissue was collected and biochemical and histopathological examinations were performed. Results:When ischemia and vehicle groups were compared with control group, significant increase was seen in serum and tissue caspase-3, malondialdehyde (MDA), and myeloperoxidase (MPO) levels (p<0.001); significant decrease was seen in serum and tissue catalase (CAT) levels (p<0.001); and significant increase was seen in serum xanthine oxidase (XO) levels (p<0.001). When the ischemia group and the MP and AMT groups were compared, low serum and tissue caspase-3 levels (p<0.001), high serum and tissue CAT levels (p<0.001), significantly low serum XO levels (p<0.001), low serum and tissue MDA levels (p<0.05) and tissue MPO levels (p<0.001) were found. Both AMT and MP groups showed decreased histopathological score and higher number of normal neurons (p<0.001) compared to ischemia group. Both AMT and MP showed better modified Tarlov scores compared to the ischemia group (p<0.001).Conclusion:In this study we demonstrated, for the first time in the literature, the antioxidant, anti-inflammatory, anti-apoptotic, and neuroprotective effects of AMT on SCIRI using biochemical, microscopic, and ultrastructural techniques. AMT might be a candidate medication for SCIRI prophylaxis and treatment.

Corresponding author : Pinar Kuru Bektasoglu