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The in vitro effect of sulbactam on polymorphonuclear leukocyte function
1Departamento de Enfermedades Infecciosas y Parasitarias, Hospital Infantil de Mexico Federico Gomez, Mexico City, D.F.
Diagnostic Microbiology and Infectious Disease
|July 1, 1989
Summary
Sulbactam enhances the ability of human white blood cells (polymorphonuclear leukocytes) to kill Staphylococcus aureus in laboratory settings. This finding suggests sulbactam may improve immune response when used therapeutically.
Area of Science:
- Immunology
- Pharmacology
- Microbiology
Background:
- Polymorphonuclear leukocytes (PMNs) are crucial for combating bacterial infections like Staphylococcus aureus.
- Understanding how antibiotics affect immune cell function is vital for optimizing treatment strategies.
Purpose of the Study:
- To investigate the in vitro effects of sulbactam on human PMN functions, including chemotaxis, respiratory burst, and microbicidal activity against S. aureus.
- To assess whether sulbactam can modulate the inhibitory effects of ampicillin on PMN function.
Main Methods:
- Human PMNs from healthy volunteers were incubated with varying concentrations of sulbactam (0.5–20 µg/ml).
- Assays were performed to evaluate PMN chemotaxis, respiratory burst (chemiluminescence), and bactericidal activity against S. aureus.
- The impact of sulbactam on ampicillin's inhibitory effect on PMN chemiluminescence was also examined.
Main Results:
- Sulbactam significantly enhanced PMN microbicidal activity against S. aureus at concentrations of 5 and 10 µg/ml.
- No inhibitory effects of sulbactam on PMN function were observed within the tested concentration range.
- Sulbactam partially reversed the in vitro inhibitory effect of ampicillin on PMN chemiluminescence.
Conclusions:
- Therapeutic concentrations of sulbactam can enhance the in vitro microbicidal capacity of human PMNs against S. aureus.
- Sulbactam may improve the host's immune response when co-administered with ampicillin, potentially enhancing treatment efficacy against S. aureus infections.