Annotation. Recent biochemical and immunological observations in multiple sclerosis

Area of Science:

• Neuroimmunology
• Neurology
• Pathology

Background:

• Early biochemical and histological changes in normal-appearing white matter in Multiple Sclerosis (MS) may precede demyelination.
• Plaque formation in MS might be secondary to a primary lesion.
• Persistently elevated immunoglobulin G (IgG) levels in cerebrospinal fluid (CSF) suggest a chronic immune reaction within the CNS.

Purpose of the Study:

• To explore the potential primary mechanisms underlying Multiple Sclerosis (MS).
• To investigate the role of immune dysregulation in MS pathogenesis.
• To examine the hypothesis of multiple inducing agents contributing to MS.

Main Methods:

• Analysis of biochemical and histological changes in normal-appearing white matter.
• Measurement of immunoglobulin G (IgG) levels in cerebrospinal fluid (CSF).
• In vitro assays of T cell function to assess regulatory T cell activity.

Main Results:

• Evidence suggests early white matter changes in MS independent of or preceding demyelination.
• Elevated IgG levels in CSF indicate a persistent immune response in the CNS.
• In vitro T cell assays suggest a potential defect in regulator T cells in MS patients.

Conclusions:

• The pathogenesis of MS may involve primary lesions in white matter and a deregulated immune response.
• A regulator T cell defect could play a significant role in MS.
• MS might be a complex disorder triggered by multiple agents and potentiated by immune deregulation.