Equipe universitaire 3509 Paris VII-Paris XI-Paris XIII, Microcirculation, Bioénergétique, Inflammation et Insuffisance circulatoire aiguë, Paris Diderot-Paris VII University, Paris, France.
Eur Spine J. 2013 Aug;22(8):1810-9. doi: 10.1007/s00586-013-2744-2. Epub 2013 Mar 19.
Cerebrospinal fluid (CSF) pressure elevation may worsen spinal cord ischaemia after spinal cord injury (SCI). We developed a rat model to investigate relationships between CSF pressure and spinal cord blood flow (SCBF).
Male Wistar rats had SCI induced at Th10 (n = 7) or a sham operation (n = 10). SCBF was measured using laser-Doppler and CSF pressure via a sacral catheter. Dural integrity was assessed using subdural methylene-blue injection (n = 5) and myelography (n = 5).
The SCI group had significantly lower SCBF (p < 0.0001) and higher CSF pressure (p < 0.0001) values compared to the sham-operated group. Sixty minutes after SCI or sham operation, CSF pressure was 8.6 ± 0.4 mmHg in the SCI group versus 5.5 ± 0.5 mmHg in the sham-operated group. No dural tears were found after SCI.
Our rat model allows SCBF and CSF pressure measurements after induced SCI. After SCI, CSF pressure significantly increases.
脑脊液(CSF)压力升高可能会使脊髓损伤(SCI)后脊髓缺血恶化。我们建立了一个大鼠模型来研究 CSF 压力与脊髓血流(SCBF)之间的关系。
雄性 Wistar 大鼠在 T10 进行 SCI(n = 7)或假手术(n = 10)。使用激光多普勒测量 SCBF,并通过骶骨导管测量 CSF 压力。通过硬脑膜下亚甲蓝注射(n = 5)和脊髓造影(n = 5)评估硬脑膜完整性。
与假手术组相比,SCI 组的 SCBF 显著降低(p < 0.0001),CSF 压力显著升高(p < 0.0001)。SCI 或假手术后 60 分钟,SCI 组的 CSF 压力为 8.6 ± 0.4mmHg,假手术组为 5.5 ± 0.5mmHg。SCI 后未发现硬脑膜撕裂。
我们的大鼠模型允许在诱导 SCI 后测量 SCBF 和 CSF 压力。SCI 后,CSF 压力显著升高。