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Related Experiment Videos

Hyaluronan in human cerebrospinal fluid

U B Laurent1, T C Laurent, L K Hellsing

  • 1Department of Ophthalmology, University of Uppsala, Sweden.

Acta Neurologica Scandinavica
|September 1, 1996
PubMed
Summary

Hyaluronan levels in cerebrospinal fluid (CSF) increase with age and are elevated in various neurological conditions like meningitis and head injury. Monitoring hyaluronan may aid in diagnosing inflammatory diseases and CSF flow obstructions.

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Area of Science:

  • Biochemistry
  • Neurology
  • Medical Diagnostics

Background:

  • Hyaluronan (HA) is a glycosaminoglycan present in various biological fluids.
  • Its concentration and role in cerebrospinal fluid (CSF) across different diseases are not fully established.
  • Understanding HA levels may offer insights into neurological pathologies.

Purpose of the Study:

  • To determine the reference interval for hyaluronan concentration in human CSF.
  • To investigate the correlation between hyaluronan levels and various neurological diseases.
  • To explore the origin and molecular characteristics of hyaluronan in the central nervous system.

Main Methods:

  • Radioassay using cartilage proteins to measure hyaluronan concentration in 200 lumbar CSF, 27 ventricular CSF, and 11 brain cyst fluid specimens.

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  • Gel chromatography for determining molecular weight distributions.
  • Histochemistry for localizing hyaluronan in brain tissue.

    • Main Results:

    • Lumbar CSF hyaluronan concentration increases significantly with age.
    • Markedly elevated hyaluronan levels were observed in meningitis, cerebellar tumor metastasis, spinal stenosis, head injury, cerebral infarction, inflammatory disorders, hydrocephalus, and encephalitis.
    • Ventricular CSF contained significantly less hyaluronan than lumbar CSF.
    • Hyaluronan molecular weight varied between CSF and brain cyst fluids.

    Conclusions:

    • Hyaluronan concentration in CSF is age-dependent and significantly altered in several neurological conditions.
    • Elevated hyaluronan is particularly indicative of inflammatory diseases, tumors, and CSF flow obstructions.
    • Further screening of CSF hyaluronan may prove valuable for clinical diagnostics.