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Updated: Aug 10, 2026

Myelin Oligodendrocyte Glycoprotein (MOG35-55) Induced Experimental Autoimmune Encephalomyelitis (EAE) in C57BL/6 Mice
Published on: April 15, 2014
Myelin encephalitogenic protein fragments in cerebrospinal fluid of persons with multiple sclerosis
Abstract:
With a double-antibody radioimmunoassay performed on unconcentrated cerebrospinal fluid, eight of 14 patients in an acute phase of multiple sclerosis had levels of 3.4 to 15.4 ng per milliliter of the P1 fragment (residues 43-88) of myelin encephalitogenic protein. Encephalitogenic protein-P1 was found only in the acute phase and was present in six of seven persons in the first week of an exacerbation and absent in 29 multiple sclerosis patients who were stable or had a gradually progressive course. Six of 117 controls had detectable cerebrospinal fluid encephalitogenic protein-P1. Only in two of these, one with a recent cerebral infarction and one with diabetic nephropathy who was in coma, were the levels in the range encountered in patients in the acute phase of multiple sclerosis. Although not entirely specific for multiple sclerosis, the presence of material in the cerebrospinal fluid of multiple sclerosis patients cross-reacting with encephalitogenic protein-P1 appears to be a characteristic of acute exacerbations.
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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