Myelin encephalitogenic protein fragments in cerebrospinal fluid of persons with multiple sclerosis

Neurology
|October 1, 1977
PubMed

Insights

Elevated levels of myelin encephalitogenic protein-P1 fragment in cerebrospinal fluid indicate active multiple sclerosis exacerbations. This biomarker is primarily detected during acute phases, distinguishing it from stable or progressive multiple sclerosis cases.

Area of Science:

  • Neuroimmunology
  • Neurology
  • Biochemistry

Background:

  • Multiple sclerosis (MS) is a chronic inflammatory demyelinating disease of the central nervous system.
  • Identifying reliable biomarkers for acute MS exacerbations is crucial for diagnosis and management.

Purpose of the Study:

  • To investigate the presence and significance of the P1 fragment of myelin encephalitogenic protein (residues 43-88) in cerebrospinal fluid (CSF) during different phases of multiple sclerosis.

Main Methods:

  • Double-antibody radioimmunoassay was employed to quantify myelin encephalitogenic protein-P1 levels in unconcentrated CSF.
  • CSF samples were analyzed from patients with acute MS exacerbations, stable MS, and healthy controls.

Main Results:

  • Myelin encephalitogenic protein-P1 was detected in 8 of 14 patients during the acute phase of MS (3.4-15.4 ng/mL).
  • The protein was present in 6 of 7 individuals within the first week of an exacerbation but absent in stable or progressive MS patients.
  • Detectable levels were found in 6 of 117 controls, with only two showing levels comparable to acute MS patients.

Conclusions:

  • The presence of myelin encephalitogenic protein-P1 in CSF is characteristic of acute multiple sclerosis exacerbations.
  • While not entirely specific, this biomarker shows potential for identifying active inflammatory phases in MS.

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