Histocompatibility types and measles antibodies in multiple sclerosis

Area of Science:

• Immunogenetics
• Neurology
• Viral Immunology

Background:

• Multiple sclerosis (MS) is a chronic neurological disease with complex etiology.
• Human Leukocyte Antigen (HLA) genes play a critical role in immune regulation.
• Previous studies suggest potential links between HLA antigens and MS susceptibility or progression.

Purpose of the Study:

• To investigate the association between specific HLA antigen frequencies and measles antibody titers in multiple sclerosis patients.
• To explore potential correlations between measles immune responses and HLA profiles in MS.

Main Methods:

• Serological determination of HLA antigens using a micro-lymphocytotoxicity test in 105 MS patients.
• Quantification of measles antibody titers via hemagglutination inhibition test.
• Statistical analysis, including chi-square tests, to compare antigen frequencies and antibody titers.

Main Results:

• MS patients exhibited significantly higher measles antibody titers compared to controls.
• Increased frequencies of HLA-B7 and HLA-Bw35, and decreased frequencies of HLA-A2, HLA-B12, and HLA-Bw40 were observed in MS patients.
• Significantly higher measles antibody geometric mean titers were found in MS patients with the HLA-A3 antigen or lacking the HLA-A2 antigen.
• The association between HLA-A3 and higher titers was more pronounced in female MS patients.

Conclusions:

• Elevated measles antibody titers in MS patients may be associated with specific HLA antigen profiles, particularly the presence of HLA-A3 or absence of HLA-A2.
• These findings suggest a potential role for HLA-mediated immune responses in the context of measles virus infection in multiple sclerosis.