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Biochemical changes associated with the symptomatic human intervertebral disk

T Kitano1, J E Zerwekh, Y Usui

  • 1Department of Orthopaedic Surgery, University of Texas Southwestern Medical Center, Dallas 75235-8885.

Clinical Orthopaedics and Related Research
|August 1, 1993
PubMed
Summary
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Symptomatic spinal discs show altered biochemistry, including higher collagen and lower water and glycosaminoglycans (GAGs). These biochemical changes in the nucleus pulposus may contribute to painful disc syndrome.

Area of Science:

  • Biochemistry
  • Orthopedics
  • Spinal Health

Background:

  • Intervertebral disc degeneration is a common cause of low back pain.
  • Understanding the biochemical changes in symptomatic discs is crucial for developing effective treatments.

Purpose of the Study:

  • To investigate the biochemical differences between symptomatic and asymptomatic intervertebral discs.
  • To identify key biochemical markers associated with painful disc syndrome.

Main Methods:

  • Biochemical analysis of nucleus pulposus from symptomatic and asymptomatic adult discs, as well as normal discs from young subjects.
  • Quantification of collagen, glycosaminoglycans (GAGs), water content, and pH.
  • Comparison of biochemical composition across different disc groups.

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Main Results:

  • Symptomatic discs had significantly higher collagen content compared to young and asymptomatic adult discs.
  • Diseased discs exhibited significantly lower total glycosaminoglycans (GAGs) and water content.
  • A significantly reduced mean pH was observed in symptomatic discs.
  • No significant differences in the percentage composition of hyaluronic acid (HA), chondroitin sulfate (CS), or keratan sulfate (KS) were found.

Conclusions:

  • Significant biochemical alterations characterize symptomatic intervertebral discs.
  • These changes, including increased collagen and decreased GAGs and water, may play a role in the development of painful disc syndrome.