[Effect of staphylococcal toxin on lymphocyte receptors and function]

Area of Science:

• Immunology
• Microbiology
• Toxicology

Background:

• Staphylococcal toxins are implicated in various infections.
• Understanding their immunomodulatory effects is crucial for treating septic diseases.

Purpose of the Study:

• To investigate the in vitro effects of staphylococcal toxin on lymphocyte and leukocyte functions.
• To elucidate the mechanisms behind toxin-induced alterations in immune cell behavior.

Main Methods:

• In vitro assessment of lymphocyte rosette-formation with red blood cells.
• Analysis of lymphocyte subpopulation ratios.
• Evaluation of spontaneous, antigen-, and mitogen-dependent leukocyte migration.

Main Results:

• Staphylococcal toxin (10(-3) concentration) inhibited lymphocyte rosette-formation in healthy donors and septic patients.
• The toxin altered lymphocyte subpopulation ratios and modified leukocyte migration.
• Leukocyte migration changes were attributed to altered granulocyte properties, not lymphocyte lymphokine production.

Conclusions:

• Staphylococcal toxin exhibits significant immunomodulatory effects on lymphocytes and leukocytes.
• The toxin's impact on leukocyte migration is primarily mediated by granulocyte dysfunction.
• Findings suggest a role for staphylococcal toxins in the pathogenesis of purulent septic diseases.