Infectious antibodies in systemic lupus erythematosus patients

Area of Science:

• Immunology
• Infectious Diseases
• Rheumatology

Background:

• Infections are suspected environmental triggers for systemic lupus erythematosus (SLE) in genetically susceptible individuals.
• Recent advancements allow simultaneous testing of multiple antibodies, aiding in understanding SLE induction mechanisms.

Purpose of the Study:

• To compare the prevalence and titers of antibodies to various infectious agents between SLE patients and healthy controls.
• To investigate the role of specific infectious agents in the pathogenesis of SLE.

Main Methods:

• Sera from 120 SLE patients and 140 controls were analyzed using the BioPlex 2200 Multiplexed Immunoassay.
• Antibody levels against eight infectious agents (Epstein-Barr virus, cytomegalovirus, Toxoplasma gondii, rubella, Treponema pallidum, herpes simplex virus, hepatitis C virus, hepatitis B virus) were quantified.

Main Results:

• Cytomegalovirus IgM and Epstein-Barr virus early antigen IgG were significantly more prevalent in SLE patients.
• Hepatitis B core and rubella IgG antibodies were less prevalent in SLE patients.
• Elevated titers of cytomegalovirus IgM, Toxoplasma gondii IgG, Epstein-Barr virus early antigen IgG, and viral capsid antigen IgG were observed in SLE patients.

Conclusions:

• Previous exposure to certain infectious agents may be implicated in the induction or prevention of SLE.
• Specific viral and parasitic antibody profiles differentiate SLE patients from controls, highlighting potential roles in disease development.