[Specifics of cytokine regulation in tick-borne encephalitis and Lyme borreliosis].

The aim of the study was to evaluate the dynamics of T-lymphocyte cytokine profile during the acute period of tick-bore encephalitis (febrile and meningeal forms) and non-erythematous Lyme borreliosis (NELB). ELISA (Vector-Best, Novosybirsk) and IHA (Virion, Tomsk) techniques were used for laboratory diagnostics of tick-borne encephalitis (TBE). Etiological verification of Lyme borreliosis (LB) was performed using immune-enzyme test systems for detection of IgG and IgM antibodies to Borellia burgdorferi (NOVATEC Immunodiagnostica, Germany). Thirty-eight subjects constituted the meningeal TBE group; the febrile TBE group consisted of 25 subjects. NELB was diagnosed in 20 subjects. Immunological tests were performed on days 1-7, 8-14, 15-21, and 22-28 of the disease. The study found that primary T-lymphocytes prevailed at early stages during the acute period of febrile TBE. In NELB, secondary T-lymphocytes were registered beginning from days 15-21. Meningeal TBE was characterized by a deep reduction in IFNgamma-producing CD3+ lymphocyte reserve.