Journal of Korean Neurosurgical Society

The Korean Neurosurgical Society (대한신경외과학회)
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Evaluation of the Combination of Methylprednisolone and Tranilast after Spinal Cord Injury in Rat Models

  • Mbori, Ngwayi James Reeves (Department of Orthopedic Surgery (Unit III), First Affiliated Hospital of Jiamusi University, Heilongjiang Province) ;
  • Chuan, Xie Yun (Department of Orthopedic Surgery (Unit III), First Affiliated Hospital of Jiamusi University, Heilongjiang Province) ;
  • Feng, Qiao Xiao (Department of Orthopedic Surgery (Unit III), First Affiliated Hospital of Jiamusi University, Heilongjiang Province) ;
  • Alizada, Mujahid (Department of Neurosurgery, First Affiliated Hospital of Jiamusi University, Heilongjiang Province) ;
  • Zhan, Jing (Department of Orthopedic Surgery (Unit III), First Affiliated Hospital of Jiamusi University, Heilongjiang Province)
  • Received : 2015.11.17
  • Accepted : 2016.03.28
  • Published : 2016.07.01
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Abstract

Objective : The aim of our study was to evaluate the neuroprotective functions of the combination therapy using methylprednisolone (MP) and tranilast (TR) after spinal cord injury (SCI) in adult rats. Methods : Spinal cord compression injury model was achieved using Yasargil aneurysm clip. Rats were divided into control group, MP group, TR group, and combination therapy group using TR and MP. Rat models were assessed for locomotor functional recovery using Basso, Beattie, and Bresnahan (BBB) score, spinal cord water content and myeloperoxidase (MPO) activity 24 hours post SCI, haematoxylin and eosin staining and glial fibrillary acid protein (GFAP) staining at 7 and 14 days post SCI. Results : The spinal cord water content and MPO activity in the combination therapy group was significantly lower than the control group and the individual therapy groups p<0.05. The combination therapy group had significantly higher BBB scores than control group and individual therapy groups (p<0.05). At one week after SCI, GFAP expression in the combination group was significantly lower than the control group (p<0.05) but there was no significant difference compared to the individual therapy groups (p>0.05). At 2 weeks after SCI there was a slight decrease in GFAP expression compared to the first week but the difference was not statistically significant (p>0.05), GFAP expression between the groups was not statistically significant p>0.05. Conclusion : Combining MP and TR is therapeutically more effective in improving functional recovery, inhibiting inflammation and glial scar formation after acute SCI.

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References

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