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Intrathecal production of measles-specific IgA in subacute sclerosing panencephalitis
A Visudtibhan1, P D Mehta, J Kulczycki
1Institute for Basic Research in Developmental Disabilities, Staten Island, NY 10314-6399, USA.
Objective:
We measured measles-specific IgA in matched pairs of cerebrospinal fluid (CSF) and sera of patients with subacute sclerosing panencephalitis (SSPE), multiple sclerosis (MS), other central nervous system (CNS) infectious diseases (INF) and other neurological diseases (OND) by using enzyme linked immunosorbent assay.
Materials And Methods:
CSF and sera from 23 patients with SSPE, 15 with MS, 14 with INF, and 15 with OND were included in the study.
Results:
The ratios of measles-specific IgA in CSF to serum were increased in SSPE patients compared to patients with MS, INF or OND.
Conclusion:
The data indicate a local production of measles-specific IgA in the CNS of SSPE patients.
Insights
Measles-specific immunoglobulin A (IgA) in cerebrospinal fluid (CSF) and serum was measured. Subacute sclerosing panencephalitis (SSPE) patients showed higher CSF/serum IgA ratios, indicating local CNS production.
Area of Science:
- Neurology
- Immunology
- Virology
Background:
- Subacute sclerosing panencephalitis (SSPE) is a severe, progressive neurological disorder associated with measles virus infection.
- Distinguishing SSPE from other neurological conditions like multiple sclerosis (MS) is crucial for diagnosis and management.
- Measles-specific antibodies in the central nervous system (CNS) may serve as biomarkers for SSPE.
Purpose of the Study:
- To investigate the presence and significance of measles-specific immunoglobulin A (IgA) in the cerebrospinal fluid (CSF) and serum of patients with SSPE.
- To compare measles-specific IgA levels in SSPE patients with those in patients suffering from multiple sclerosis (MS), other central nervous system (CNS) infections (INF), and other neurological diseases (OND).
Main Methods:
- Enzyme-linked immunosorbent assay (ELISA) was employed to quantify measles-specific IgA.
- Matched pairs of CSF and serum samples were analyzed from 23 SSPE patients, 15 MS patients, 14 INF patients, and 15 OND patients.
Main Results:
- A significantly elevated ratio of measles-specific IgA in CSF compared to serum was observed in patients with SSPE.
- This elevated ratio in SSPE patients was distinct when compared to the ratios found in patients with MS, INF, or OND.
Conclusions:
- The findings strongly suggest local production of measles-specific IgA within the CNS of individuals with SSPE.
- This localized immune response in the CNS is a potential diagnostic indicator for SSPE.