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The value of CSF analysis for the differential diagnosis of HTLV-I associated myelopathy and multiple sclerosis
M Puccioni-Sohler1, B Kitze, K Felgenhauer
1Klinik und Poliklinik für Neurologie, Georg-August-Universität Göttingen, Germany.
Insights
Researchers investigated intrathecal antibody synthesis in patients with HTLV-I associated myelopathy/tropical spastic paraparesis (HAM/TSP) and multiple sclerosis. Findings reveal distinct viral antibody response patterns in these neurological conditions.
Area of Science:
- Neuroimmunology
- Virology
- Clinical Neurology
Background:
- Chronic neurological diseases like HAM/TSP and multiple sclerosis involve complex immune responses.
- Intrathecal synthesis of antibodies can indicate ongoing immune activity within the central nervous system.
Purpose of the Study:
- To analyze intrathecal synthesis of virus-specific antibodies in patients with HAM/TSP and multiple sclerosis.
- To compare immune responses in patients with neurological diseases to a non-inflammatory control group.
Main Methods:
- Enzyme-linked immunosorbent assay (ELISA) was used to detect virus-specific antibodies (measles, rubella, varicella zoster, herpes simplex) in cerebrospinal fluid (CSF) and serum.
- Analysis included 17 patients with HAM/TSP, 6 with multiple sclerosis, and 6 with idiopathic epilepsy from Brazil.
Main Results:
- All HAM/TSP and multiple sclerosis patients exhibited an intrathecal immune response, characterized by oligoclonal IgG.
- A polyspecific intrathecal immune response against measles and rubella viruses was found in only one HAM/TSP patient.
- Multiple sclerosis patients consistently showed specific antibodies against measles and rubella (MRZ response), absent in controls.
Conclusions:
- Intrathecal antibody synthesis, particularly the MRZ response, may serve as a biomarker in multiple sclerosis.
- The study highlights the diagnostic and theoretical relevance of mono- and polyspecific intrathecal immune responses in chronic neurological diseases.
Abstract:
Cerebrospinal fluid (CSF) and serum of 17 patients with HAM/TSP (HTLV-I associated myelopathy/tropical spastic paraparesis), six with multiple sclerosis and six with idiopathic epilepsy (non inflammatory control) from Brazil were analysed for the presence of intrathecal synthesis of virus-specific antibodies against measles, rubella, varicella zoster virus and herpes simplex virus by enzyme-linked immunosorbent assay (ELISA). All HAM/TSP and multiple sclerosis cases had an intrathecal immune response (oligoclonal IgG). In HAM/TSP, only 1/17 case showed a polyspecific intrathecal immune response against measles and rubella virus. In multiple sclerosis, specific antibodies against measles and rubella (MRZ response) were observed in all patients but not in the control with idiopathic epilepsy. The diagnostic and theoretical relevance of mono- and polyspecific immune responses is discussed for these chronic neurological diseases.