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Updated: Aug 14, 2026
Myeloid Innate Signaling Pathway Regulation by MALT1 Paracaspase Activity
Published on: January 7, 2019
Linezolid diminishes inflammatory cytokine production from human peripheral blood mononuclear cells
Pilar Garcia-Roca1, Javier Mancilla-Ramirez, Araceli Santos-Segura
1Departamento de Inmunoquímica y Biología Celular, Hospital Infantil de México, Federico Gómez, México, D.F., México.
Background:
Active peptides produced by monocytes, in response to endotoxin, initiate and maintain the acute phase of inflammatory response. Some antibiotics have been reported to have immunomodulatory effects in addition to their antimicrobial activity. We examined the effect of linezolid on cytokine synthesis.
Methods:
The modulatory effects of erythromycin and linezolid were evaluated in LPS-stimulated human peripheral blood mononuclear cells (PBMCs). Blood was obtained by venipuncture from healthy donor volunteers. PBMCs were separated by Ficoll-Paque. More than 90% of the cells were monocytes as determined by esterase staining. Cells were incubated in the presence of LPS, with or without various concentrations of erythromycin and linezolid. The concentration of each cytokine was determined by ELISA with commercially available reagents.
Results:
The two drugs suppressed significantly the synthesis of the cytokines tested in a concentration-dependent manner.
Conclusions:
These data indicate that antibacterial agents may modify acute phase inflammatory response through their effects on cytokines synthesis by monocytes.
