open access

Vol 47, No 4 (2013)
ARTYKUŁ ORYGINALNY
Submitted: 2012-05-30
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The dose-dependent neuroprotective effect of alpha-lipoic acid in experimental spinal cord injury

Murat Sayin1, Peyker Temiz2, Ahmet Var3, Cüneyt Temiz1
DOI: 10.5114/ninp.2013.36207
·
Neurol Neurochir Pol 2013;47(4):345-351.
Affiliations
  1. department of neurosurgery
  2. Acibadem Hospital, Department of Pathology, Istanbul/TURKEY, 34718 Istanbul, Türkiye
  3. 4Department of Biochemistry, Faculty of Agriculture, Zagazig University, Zagazig , Egypt, 4Department of Biochemistry, Faculty of Agriculture, University, Zagazig 44511, Egypt, 44511 Zagazig, Egypt

open access

Vol 47, No 4 (2013)
ARTYKUŁ ORYGINALNY
Submitted: 2012-05-30

Abstract

Background and purpose

Free radical production after spinal cord injury (SCI) plays an important role in secondary damage. The aim of this study was to investigate neuroprotective effects of the powerful antioxidant alpha-lipoic acid (ALA) in a spinal cord clip compression injury model.

Material and methods

Fifty-six Sprague-Dawley rats, weighing between 210 and 300 g, were randomly divided into seven groups. Spinal cord injury was performed by an aneurysm clip placed extradurally at the level of T9. Group 1 (sham) received laminectomy only. Group 2 (control) received SCI; Group 3 received 30 mg/kg of methylprednisolone sodium succinate (MPSS); Groups 4, 5, 6 and 7 received ALA at doses of 50, 100, 150, 200 mg/kg, respectively, via the intraperitoneal route immediately after SCI. The rats were neurologically tested 24 hours after trauma. Spinal cord samples from injury sites were harvested for measurement of lipid peroxidation products and histopathological evaluation.

Results

Spinal cord malonyldialdehyde levels of rats in treatment groups decreased after administration of ALA. The difference between the trauma group and groups receiving MPSS-ALA was statistically significant. The difference between the ALA (50, 100, 150 mg/kg) and MPSS groups was insignificant. Group 7 (ALA 200 mg/kg) was excluded from the study because of the possible toxic effect. Alpha lipoic acid and MPSS had similar effects on spinal cord injury in terms of lipid peroxidation, neurological recovery and histopathological changes.

Conclusions

Alpha lipoic acid at a dose range of 50–150 mg/kg is as effective as MPSS (30 mg/kg) in neuroprotection after SCI. Further, more detailed experimental studies are needed to determine the effects of ALA on the detrimental results of secondary SCI before its use in humans.

Abstract

Background and purpose

Free radical production after spinal cord injury (SCI) plays an important role in secondary damage. The aim of this study was to investigate neuroprotective effects of the powerful antioxidant alpha-lipoic acid (ALA) in a spinal cord clip compression injury model.

Material and methods

Fifty-six Sprague-Dawley rats, weighing between 210 and 300 g, were randomly divided into seven groups. Spinal cord injury was performed by an aneurysm clip placed extradurally at the level of T9. Group 1 (sham) received laminectomy only. Group 2 (control) received SCI; Group 3 received 30 mg/kg of methylprednisolone sodium succinate (MPSS); Groups 4, 5, 6 and 7 received ALA at doses of 50, 100, 150, 200 mg/kg, respectively, via the intraperitoneal route immediately after SCI. The rats were neurologically tested 24 hours after trauma. Spinal cord samples from injury sites were harvested for measurement of lipid peroxidation products and histopathological evaluation.

Results

Spinal cord malonyldialdehyde levels of rats in treatment groups decreased after administration of ALA. The difference between the trauma group and groups receiving MPSS-ALA was statistically significant. The difference between the ALA (50, 100, 150 mg/kg) and MPSS groups was insignificant. Group 7 (ALA 200 mg/kg) was excluded from the study because of the possible toxic effect. Alpha lipoic acid and MPSS had similar effects on spinal cord injury in terms of lipid peroxidation, neurological recovery and histopathological changes.

Conclusions

Alpha lipoic acid at a dose range of 50–150 mg/kg is as effective as MPSS (30 mg/kg) in neuroprotection after SCI. Further, more detailed experimental studies are needed to determine the effects of ALA on the detrimental results of secondary SCI before its use in humans.

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Keywords

spinal cord injury, alpha-lipoic acid, free radical, lipid peroxidation, methylprednisolone

About this article
Title

The dose-dependent neuroprotective effect of alpha-lipoic acid in experimental spinal cord injury

Journal

Neurologia i Neurochirurgia Polska

Issue

Vol 47, No 4 (2013)

Pages

345-351

Page views

434

Article views/downloads

641

DOI

10.5114/ninp.2013.36207

Bibliographic record

Neurol Neurochir Pol 2013;47(4):345-351.

Keywords

spinal cord injury
alpha-lipoic acid
free radical
lipid peroxidation
methylprednisolone

Authors

Murat Sayin
Peyker Temiz
Ahmet Var
Cüneyt Temiz

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