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Influence of clindamycin on fibronectin-staphylococcal interactions
The Journal of Antimicrobial Chemotherapy
|October 1, 1983
Summary
Subinhibitory clindamycin reduces Staphylococcus binding to fibronectin, potentially altering adherence without impacting clearance by the reticuloendothelial system. This impacts bacterial-host interactions.
Area of Science:
- Microbiology
- Infectious Diseases
- Pharmacology
Background:
- Staphylococcal infections pose significant challenges.
- Fibronectin plays a crucial role in bacterial adherence and host immune response.
- Understanding antibiotic effects on bacterial-host interactions is vital for effective treatment.
Purpose of the Study:
- To investigate the impact of subinhibitory clindamycin concentrations on Staphylococcus binding to fibronectin.
- To assess how clindamycin affects fibronectin-mediated phagocytosis of Staphylococcus.
- To determine the overall effect on bacterial adherence and clearance mechanisms.
Main Methods:
- In-vitro binding assays were employed to quantify fibronectin-staphylococcal interactions.
- Staphylococci were exposed to varying concentrations of clindamycin.
- Phagocytosis assays using human polymorphonuclear leukocytes were performed.
Main Results:
- Subinhibitory clindamycin caused a dose-dependent decrease in fibronectin binding to Staphylococcus.
- Fibronectin-mediated phagocytosis of treated staphylococci by leukocytes was reduced.
- Serum-mediated phagocytosis remained effective, indicating preserved clearance mechanisms.
Conclusions:
- Clindamycin at subinhibitory levels can alter Staphylococcus adherence to fibronectin.
- This modification may impact bacterial colonization without compromising phagocytic clearance.
- Clinical implications include potential modulation of staphylococcal pathogenesis and treatment strategies.