Abstract
Objective
To test propofol lipid emulsion formulation for its immunosuppressive effects.
Design
Propofol lipid emulsion and the emulsion alone were tested at increasing concentrations and compared to initial values and between each other. Propofol alone could not be tested due to its insolubility into the culture medium.
Patients and participants
Lymphocytes from 12 surgical intensive care (ICU) patients (median APACHE score 16 and median TISS score 28) and 12 healthy volunteers.
Measurements
Phytohaemagglutinin-, concanavalin A-and pokeweed mitogen-induced lymphocyte proliferative responses were measured in the presence of increasing concentrations of propofol lipid emulsion formulation or the lipid emulsion.
Results
Lymphocyte proliferative responses from ICU patients were in general on a lower level than in the volunteers. The propofol lipid emulsion formulation (Diprivan®) decreased pokeweed mitogen-induced proliferative responses of lymphocytes from ICU patients at propofol concentrations found in the circulation (1–10 μg/ml) and the lipid emulsion alone at 100 μg/ml triglyceride concentrations while the other mitogen-induced responses were not affected. No changes were observed in the mitogen-induced responses of lymphocytes from healthy volunteers.
Conclusions
Propofol emulsion formulation decreased in surgical intensive care patients pokeweed mitogen-induced lymphocytic responses in vitro at clinically found concentrations, indicating the need for further studies to test B-lymphocyte functions and T-B-lymphocyte co-operation during propofol lipid emulsion administration.
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Pirttikangas, C.O., Perttilä, J. & Salo, M. Propofol emulsion reduces proliferative responses of lymphocytes from intensive care patients. Intensive Care Med 19, 299–302 (1993). https://doi.org/10.1007/BF01690552
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DOI: https://doi.org/10.1007/BF01690552