Viruses and antibody deficiency syndromes

Area of Science:

• Immunology
• Virology
• Infectious Diseases

Background:

• Primary immunodeficiencies (PIDs) are a group of inherited disorders that impair the immune system's ability to fight infections.
• Viral infections are a significant concern in individuals with PIDs, leading to increased morbidity and mortality.
• The etiology of some PIDs, particularly non-familial cases, remains incompletely understood.

Purpose of the Study:

• To summarize common viral infections observed in patients with primary immunodeficiencies.
• To investigate the potential role of retroviral infections in the development of common variable hypogammaglobulinemia (CVID).

Main Methods:

• Literature review of viral infections associated with PIDs.
• Retroviral (HIV) isolation attempts from blood mononuclear cells of patients with CVID.

Main Results:

• Common viral infections in PIDs include Echovirus, poliovirus, varicella zoster, non-A non-B hepatitis, and hepatitis B.
• Epstein-Barr virus (EBV) associated X-linked lymphoproliferative syndrome (XLP) and congenital rubella syndrome (CRS) were reviewed.
• Human immunodeficiency virus (HIV) was isolated from 3 out of 31 patients with common variable hypogammaglobulinemia.

Conclusions:

• Viral infections pose a substantial threat to individuals with primary immunodeficiencies.
• The findings suggest that retroviral infections, specifically HIV, may be an underlying cause for some cases of non-familial common variable hypogammaglobulinemia.
• Further research is warranted to elucidate the role of retroviruses in the pathogenesis of certain PIDs.