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[Effect of cefaclor and tobramycin on the phagocytic activity of peritoneal macrophages in mice]
Abstract:
The influence of Cefaclor and of Tobramycin on phagocytosis of sheep erythrocytes by murine peritoneal macrophages was investigated. The antibiotics in various concentrations were either added to the cells directly during the phagocytosis period or injected i.v. into cell donor mice at different times before cell harvest and the cells subsequently assayed for phagocytic activity in vitro. When antibiotic was added during the phagocytosis a dose-dependent inhibition of phagocytosis was observed which, however, became significant only at extremely high concentrations of the antibiotic. In all other experimental set-ups, phagocytosis was not influenced by antibiotics. Restrictive usage of either antibiotic in clinical situation does not appear mandatory on the basis of the reported observations.
Insights
Cefaclor and Tobramycin antibiotics showed dose-dependent inhibition of sheep erythrocyte phagocytosis by macrophages only at very high concentrations. Other experimental conditions revealed no significant impact, suggesting restrictive clinical use may not be mandatory.
Area of Science:
- Immunology
- Pharmacology
Context:
- Investigating the impact of common antibiotics on cellular immune functions.
- Assessing the effects of Cefaclor and Tobramycin on macrophage phagocytosis.
Purpose:
- To determine the influence of Cefaclor and Tobramycin on the phagocytic activity of murine peritoneal macrophages against sheep erythrocytes.
- To evaluate antibiotic effects under direct in vitro exposure and in vivo administration.
Summary:
- Antibiotics were tested by direct addition to macrophages during phagocytosis and via intravenous injection into donor mice.
- Direct addition showed dose-dependent phagocytosis inhibition by Cefaclor and Tobramycin, but only at extremely high concentrations.
- In vivo administration and other in vitro conditions did not significantly affect macrophage phagocytic activity.
Impact:
- The findings suggest that Cefaclor and Tobramycin do not significantly impair macrophage phagocytosis under typical clinical exposure scenarios.
- Restrictive clinical usage of these antibiotics may not be necessary based on their limited impact on this specific immune function.
- Provides data for informed clinical decisions regarding antibiotic use and immune response.