Tetracyclines and Host-Defense Mechanisms

Author:

Forsgren Arne1,Gnarpe Håkan1

Affiliation:

1. Institute of Medical Microbiology, University of Uppsala, Uppsala, Sweden

Abstract

The effects of different tetracyclines on the bactericidal action of serum and on phagocytosis and intracellular killing of bacteria were investigated. Opsonization, phagocytosis, and intracellular killing were not significantly affected by any of the investigated tetracyclines. The bactericidal action of serum onEscherichia coliwas substantially reduced by all tetracyclines investigated. In this respect, doxycycline had a much more pronounced action than the other tetracyclines. The serum bactericidal effect could be completely restored by addition of Mg2+.

Publisher

American Society for Microbiology

Subject

Infectious Diseases,Pharmacology (medical),Pharmacology

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