Related Experiment Videos
Immunological alterations associated with recurrent herpes simplex genitalis.
R Cauda1, V Laghi, M Tumbarello
1Department of Infectious Diseases, Catholic University, Rome, Italy.
Clinical Immunology and Immunopathology
|May 1, 1989
Summary
Immune cell changes, including decreased helper T-cells and natural killer (NK) cell activity, are observed during herpes simplex genitalis recurrences. These immune responses normalize between outbreaks, suggesting a cyclical pattern in the host
Area of Science:
- Immunology
- Virology
- Dermatology
Background:
- Recurrent herpes simplex genitalis (HSV-2) significantly impacts patient quality of life.
- Understanding the host immune response during different phases of genital herpes is crucial for developing effective management strategies.
Purpose of the Study:
- To investigate the dynamic changes in immune cell populations and functions during recurrent herpes simplex genitalis infections.
- To correlate these immunological parameters with the clinical course of the disease, including acute illness, convalescence, and quiescent periods.
Main Methods:
- Immunological profiling of 12 patients with recurrent genital herpes at three distinct time points: acute illness, convalescence, and quiescence.
- Flow cytometry was used to quantify helper (CD4+) and suppressor/cytotoxic (CD8+) T-cells, including CD11+ suppressor cells and CD16+ NK cells.
- Lymphoproliferative responses to HSV-2 antigens and NK cell activity against HSV-2-infected targets and K562 cell lines were assessed.
Main Results:
- During acute illness (within 24 hours of lesion onset), a decrease in CD4+ cells, an increase in CD8+ cells (particularly CD11+ suppressor cells), and reduced NK cell activity were observed.
- In the convalescent phase (Days 5-7), CD8+ cells remained elevated, NK cell activity and lymphoproliferative responses increased, correlating with CD16+ cell numbers and HLA-DR expression.
- During quiescent periods between recurrences, immunological parameters returned to baseline levels, showing no significant alterations.
Conclusions:
- Recurrent herpes simplex genitalis is associated with transient but significant alterations in cellular immunity, characterized by an initial imbalance favoring suppressor T-cells and reduced NK cell function.
- The immune system demonstrates a capacity to recover and mount effective responses during the later stages of infection and between recurrences.
- These findings highlight the dynamic interplay between HSV-2 and the host immune system throughout the infection cycle.