Aim of study. To study chemotactic properties of glutamate and glutamate receptor agonists on T cells migration from healthy donors and patients with multiple sclerosis (MS) in vitro. Materials and methods. T cell migration of 15 patients with MS and 15 healthy donors was studied in vitro using transwells. Lymphocytes were activated with PMA (10 ng/mL). T cells were added to transwells with fibronectin (10 μg/mL) pretreated membrane. The lower chamber contained glutamate or AMPA or NMDA (100 μM for each) in complete RPMI medium. Migrated cells were collected and stained with antibodies to CD3-marker for subsequent analysis by cytofluorimetry. Results and conclusion. In presence of glutamate, there is a tendency to a decrease in migration activity in both groups of donors. T-cell chemotaxis of healthy donors, but not MS patients, decreased in concentration gradient of NMDA. The activation of lymphocytes with PMA leads to a decrease in the number of migrated cells by an average of 17% (p < 0.01). In MS patients there is a tendency to an increase in chemotaxis of activated cells in concentration gradient of glutamate, and a decrease with AMPA. Thus, glutamate and glutamate receptors agonists do not possess pronounced chemotactic properties, but rather enhance T-cell migration through synthesis of adhesion molecules on the surface of lymphocytes and endothelium.
Mast cell heparin stimulates migration of capillary endothelial cells in vitro.