Immunological Criteria for Predicting Severe and Complicated Forms of Chickenpox
The aim of the study was to evaluate the levels of mediators of the immune response, cellular immunity, and phagocytic activity in patients with chickenpox with various values of the clinical and laboratory parameters and propose criteria for predicting the severity and complications of the disease.
Materials and Methods. The blood levels of pro-inflammatory mediators were evaluated by ELISA using monoclonal antibodies (Protein Contour, Russia).
Results. The inflammatory mediators and neutrophil chemiluminescence were studied in patients with either presence or absence of Varicella zoster DNA. We found that in patients with positive viral DNA, the levels of IFN-α and IFN-γ were significantly lower compared to patients with negative DNA results. Thus, complications of chickenpox, in particular secondary viral-bacterial pneumonia, can be predicted based on low (less than double-normal) levels of IL-6 and IFN-γ, induced chemiluminescence, CD16, and CD20. This type of immune response indicates the state of immune deficiency with prevailing suppression of the T-effector and phagocytic mechanisms in these patients.
Conclusion. Prognosis of the development of severe and complicated forms of chickenpox can be based on the insufficiently increased (less than two normal values) levels of IL-6 and IFN-γ, induced chemiluminescence, CD16, and CD20. These relatively low levels are indicative of reduced immune response to the infection, which may require additional immune correcting therapy.
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