Analysis of mononuclear leukocyte functional activity in peripheral blood of patients with varying clinical severity of acute Lyme disease

Abstract

The aim of the study is to assess spontaneous and phytohemagglutinin (PHA)-induced proliferative and cytokine secretory activity in mononuclear blood cell cultures of patients with acute Lyme borreliosis (LB) over times before and after antibiotic therapy as well as depending on clinical severity. Materials and methods. Activity of blast transformation reaction (BTR) of lymphocytes and the secretion levels of interleukins (IL)-1β, IL-2, IL-6, IL-4, IL-10, IL-8, tumor necrosis factor (TNF)-α, monocyte chemoattractant protein (MCP)-1, interferon (IFN)-γ and IFN-α were assessed twice over time in the cultures of mononuclear blood cells of 18 and 14 patients with mild and moderate severity of acute LB. Results. It was determined that the moderate clinical course of acute LB as compared with the mild course was associated with the significant suppression of BTR levels, the increases in spontaneous and/or PHA-stimulated production levels of proinflammatory cytokines IL-1β, IL-6, IL-8, TNF-α and MCP-1, which were balanced by the increases in secretion levels of anti-inflammatory cytokines IL-10 and IL-4. The initial suppression of IFN-γ secretion in this group gave way to an increase in its production over time, which generally corresponded to the formation of an immune response of the mixed Th1/Th2 type.