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Cerebrospinal fluid lymphocytes in experimental allergic encephalomyelitis
Clinical and Experimental Immunology
|October 1, 1978
Summary
Experimental allergic encephalomyelitis in guinea pigs causes cerebrospinal fluid (CSF) pleocytosis, characterized by a significant increase in lymphocytes, 12-16 days post-sensitization.
Area of Science:
- Neuroimmunology
- Experimental models of neurological disease
Background:
- Experimental allergic encephalomyelitis (EAE) is a model for demyelinating diseases.
- Cerebrospinal fluid (CSF) analysis is crucial for diagnosing neurological conditions.
Purpose of the Study:
- To characterize cerebrospinal fluid (CSF) pleocytosis in guinea pigs with experimental allergic encephalomyelitis (EAE).
- To investigate the cellular composition of CSF during EAE development.
Main Methods:
- Induction of EAE in guinea pigs using homologous myelin basic protein.
- Analysis of cerebrospinal fluid (CSF) cell counts and types at specific time points post-sensitization.
Main Results:
- Significant CSF pleocytosis (616+/-148 cells/microliter) observed 12-16 days after sensitization.
- Pleocytosis was absent in healthy animals at 9-10 days post-sensitization.
- CSF pleocytosis predominantly comprised lymphocytes (89% small lymphocytes, 8% larger lymphocytes), with monocytes as the remainder. Lymphocytes were mainly E-rosetting or null cells, with few B-cell markers.
Conclusions:
- The cellular profile of CSF pleocytosis in EAE resembles patterns seen in delayed hypersensitivity responses.
- CSF pleocytosis is a key indicator of EAE development in this guinea pig model.