Methylprednisolone inhibits production of interleukin-1β and interleukin-6 in the spinal cord following compression injury in rats

Eugene Fu, Samuel Saporta

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

Interleukin-1β (IL-1β) and interleukin-6 (IL-6) are major inflammatory cytokines produced after spinal cord injury (SCI). This study sought to evaluate the effects of methylprednisolone (MP) on IL-1β and IL-6 protein in spinal cord tissue following SCI. Halothane-anesthetized, female Sprague-Dawley rats weighing (280-320 g) underwent laminectomy at T7-T8. No lesions were produced in animals in the saline control and MP control groups. SCI was induced by temporary placement of an aneurysm clip at T7-T8, with a closing pressure of 55 g at the spinal level of T7-T8, resulting in spinal cord compression for one minute. Animals with SCI were treated with MP (30 mg/kg sc) or an equal volume of saline. IL-1β and IL-6 spinal cord protein were measured by enzyme-linked immunosorbent assays (ELISA). Data were summarized as mean ± SD and compared by two-way analysis of variance (ANOVA). IL-1β and IL-6 levels were elevated in the SCI + Saline animals (P < 0.01) compared with saline control, MP control, and SCI + MP-treated animals. The rise in IL-1β and IL-6 levels after SCI was blunted after administration of MP, suggesting an interaction between glucocorticosteroids and the cytokine cascade after spinal cord trauma. Further evaluation of the effects of MP on the cytokine cascade may be important in assessing whether or not the anti-inflammatory effects of glucocorticosteroids confer neuroprotection after SCI.

Original languageEnglish
Pages (from-to)82-85
Number of pages4
JournalJournal of Neurosurgical Anesthesiology
Volume17
Issue number2
DOIs
StatePublished - Apr 1 2005

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Spinal Cord Compression
Methylprednisolone
Spinal Cord Injuries
Interleukin-1
Interleukin-6
Wounds and Injuries
Cytokines
Spinal Cord
Laminectomy
Halothane
Surgical Instruments
Aneurysm
Sprague Dawley Rats
Analysis of Variance
Proteins
Anti-Inflammatory Agents
Enzyme-Linked Immunosorbent Assay
Pressure
Control Groups

Keywords

  • Cytokines
  • Interleukins
  • Methylprednisolone
  • Spinal cord injury

ASJC Scopus subject areas

  • Anesthesiology and Pain Medicine
  • Clinical Neurology

Cite this

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title = "Methylprednisolone inhibits production of interleukin-1β and interleukin-6 in the spinal cord following compression injury in rats",
abstract = "Interleukin-1β (IL-1β) and interleukin-6 (IL-6) are major inflammatory cytokines produced after spinal cord injury (SCI). This study sought to evaluate the effects of methylprednisolone (MP) on IL-1β and IL-6 protein in spinal cord tissue following SCI. Halothane-anesthetized, female Sprague-Dawley rats weighing (280-320 g) underwent laminectomy at T7-T8. No lesions were produced in animals in the saline control and MP control groups. SCI was induced by temporary placement of an aneurysm clip at T7-T8, with a closing pressure of 55 g at the spinal level of T7-T8, resulting in spinal cord compression for one minute. Animals with SCI were treated with MP (30 mg/kg sc) or an equal volume of saline. IL-1β and IL-6 spinal cord protein were measured by enzyme-linked immunosorbent assays (ELISA). Data were summarized as mean ± SD and compared by two-way analysis of variance (ANOVA). IL-1β and IL-6 levels were elevated in the SCI + Saline animals (P < 0.01) compared with saline control, MP control, and SCI + MP-treated animals. The rise in IL-1β and IL-6 levels after SCI was blunted after administration of MP, suggesting an interaction between glucocorticosteroids and the cytokine cascade after spinal cord trauma. Further evaluation of the effects of MP on the cytokine cascade may be important in assessing whether or not the anti-inflammatory effects of glucocorticosteroids confer neuroprotection after SCI.",
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N2 - Interleukin-1β (IL-1β) and interleukin-6 (IL-6) are major inflammatory cytokines produced after spinal cord injury (SCI). This study sought to evaluate the effects of methylprednisolone (MP) on IL-1β and IL-6 protein in spinal cord tissue following SCI. Halothane-anesthetized, female Sprague-Dawley rats weighing (280-320 g) underwent laminectomy at T7-T8. No lesions were produced in animals in the saline control and MP control groups. SCI was induced by temporary placement of an aneurysm clip at T7-T8, with a closing pressure of 55 g at the spinal level of T7-T8, resulting in spinal cord compression for one minute. Animals with SCI were treated with MP (30 mg/kg sc) or an equal volume of saline. IL-1β and IL-6 spinal cord protein were measured by enzyme-linked immunosorbent assays (ELISA). Data were summarized as mean ± SD and compared by two-way analysis of variance (ANOVA). IL-1β and IL-6 levels were elevated in the SCI + Saline animals (P < 0.01) compared with saline control, MP control, and SCI + MP-treated animals. The rise in IL-1β and IL-6 levels after SCI was blunted after administration of MP, suggesting an interaction between glucocorticosteroids and the cytokine cascade after spinal cord trauma. Further evaluation of the effects of MP on the cytokine cascade may be important in assessing whether or not the anti-inflammatory effects of glucocorticosteroids confer neuroprotection after SCI.

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