Serum bactericidal test in volunteers--a review

Area of Science:

• Pharmacology
• Infectious Diseases
• Oncology

Background:

• Neutropenic cancer patients are highly susceptible to gram-negative sepsis.
• Effective antimicrobial therapy is crucial for managing infections in this immunocompromised population.

Purpose of the Study:

• To review the utility of the serum bactericidal test (SBT) for preclinical evaluation of antibiotics.
• To assess the efficacy of various antibiotic agents against gram-negative pathogens, particularly Pseudomonas aeruginosa.

Main Methods:

• The review summarizes studies employing the SBT in volunteers to evaluate antibiotic efficacy.
• Antibiotic trials included extended-spectrum cephalosporins, penicillins (mezlocillin, piperacillin, ticarcillin), aminoglycosides, and imipenem.

Main Results:

• Extended-spectrum cephalosporins demonstrated limited efficacy as single agents against Pseudomonas aeruginosa.
• Piperacillin was the most effective penicillin, with combinations including aminoglycosides showing enhanced activity.
• Imipenem alone exhibited activity comparable to broad-spectrum penicillin-aminoglycoside combinations.

Conclusions:

• The serum bactericidal test is a valuable tool for predicting clinical efficacy of antibiotics for gram-negative sepsis.
• Piperacillin and imipenem show significant potential for treating infections in neutropenic cancer patients.
• Further clinical trials are warranted to confirm the efficacy of promising agents like imipenem.