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Cauda equina syndrome.

J Orendácová1, D Cízková, J Kafka

  • 1Institute of Neurobiology, Slovak Academy of Sciences, 040 01 Kosice, Slovak Republic. dufko@saske.sk

Progress in Neurobiology
|April 20, 2001
PubMed
Summary

Cauda equina syndrome, caused by nerve root compression, leads to severe symptoms like back pain and bladder dysfunction. Animal models reveal neural and vascular damage, aiding treatment development.

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Area of Science:

  • Neurology
  • Spinal Cord Research
  • Surgical Pathology

Background:

  • Cauda equina syndrome (CES) results from compression of lumbosacral nerve roots within the dural sac.
  • CES affects lower extremity motor and sensory functions, pelvic floor, and sphincters, causing symptoms like low back pain, saddle anesthesia, bilateral sciatica, weakness, and bladder dysfunction.
  • Etiologies include compressive (herniated discs, spinal stenosis, neoplasms) and non-compressive (ischemia, inflammation, infections) factors.

Purpose of the Study:

  • To investigate the effects of nerve root compression in CES on neural and vascular anatomy, impulse propagation, and neurotransmitter changes.
  • To explore the involvement of intrinsic spinal cord neurons in compression-induced CES.
  • To identify biomarkers and pathological changes in animal models of CES.

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Main Methods:

  • Utilized canine, porcine, and rat models to simulate CES and study compression effects.
  • Examined neural and vascular anatomy, impulse propagation, and neurotransmitter alterations.
  • Analyzed histopathological changes in lumbosacral segments, including NADPH diaphorase, Fos-like immunoreactivity, and heat shock protein HSP72 expression.

Main Results:

  • Demonstrated significant impairment of nerve root neural and vascular anatomy following compression.
  • Observed compromised impulse propagation and altered neurotransmitter levels in the spinal cord.
  • Detected prominent changes in NADPH diaphorase, Fos-like immunoreactive, and HSP72 in lumbosacral segments after short- and long-lasting compression in dogs.

Conclusions:

  • Compression-induced CES involves complex neural degeneration, including anterograde, retrograde, and transneuronal degeneration in lumbosacral segments.
  • Animal models provide valuable insights into the pathophysiology of CES, aiding understanding of neural and vascular insults.
  • Findings contribute to the development of improved diagnostic and therapeutic strategies for CES, back pain, and herniated lumbar discs.