Complement C4 deficiency and HLA homozygosity in patients with frequent intraoral herpes simplex virus type 1 infections.
case_report · Level V
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Abstract
Three consecutive patients with no apparent immunodeficiency who had frequent intraoral herpes simplex type 1 recurrences, a rare complication of herpes simplex virus infection, were found to have a total deficiency of either the A or B isotype of the complement component C4 and to be homozygous for the studied HLA antigens. A combination of HLA homozygosity, which may lead to impaired T cell recognition of viral peptides, and deficiency in the classical complement pathway, which can compromise virus neutralization, may predispose to severe and frequent herpes simplex virus infections.
Medical subject headings
- Complement C4
- HLA Antigens
- Herpes Simplex
- Herpesvirus 1, Human
- Mouth Diseases