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Chronic tick-borne encephalitis virus antigenemia: possible pathogenesis pathways.
I O Naslednikova1, N V Ryazantseva, V V Novitskii
1Department of Pathophysiology, Department of Fundamentals of Clinical Medicine, Siberian State Medical University, Ministry of Health of the Russian Federation, Tomsk, Russia. ira_naslednikova@mail.ru
Bulletin of Experimental Biology and Medicine
|July 20, 2005
Summary
Chronic tick-borne encephalitis virus antigenemia alters immune responses. Key changes include T cell proliferation, altered T cell subsets, and an imbalance in Th1/Th2 cytokine production, impacting immune regulation.
Area of Science:
- Immunology
- Virology
- Infectious Diseases
Background:
- Tick-borne encephalitis virus (TBEV) causes neurological disease.
- Chronic antigenemia suggests persistent viral activity.
- Immune dysregulation is implicated in chronic infections.
Purpose of the Study:
- To investigate the immune status of patients with chronic TBEV antigenemia.
- To analyze lymphocyte proliferative potential and immunophenotype.
- To assess the cytokine-producing capacity of mononuclear cells.
Main Methods:
- Analysis of T cell lymphoproliferative response.
- Determination of relative T cell content and T helper inducer subsets.
- Assessment of the immunoregulatory index.
- Measurement of Th1 and Th2 cytokine production.
Main Results:
- Significant alterations in T cell lymphoproliferative response were observed.
- Changes in the relative content of T cells and T helper inducers were noted.
- An imbalance in the production of immunoregulatory Th1 and Th2 cytokines was evident.
Conclusions:
- Chronic TBEV antigenemia is associated with significant immune system alterations.
- These changes include impaired T cell responses and skewed cytokine profiles.
- The findings highlight immune dysregulation in chronic TBEV infection.