Cefazolin and cephalexin levels in prostatic tissue and sera

Area of Science:

• Pharmacology
• Urology
• Infectious Diseases

Background:

• Bacterial prostatitis is a common complication following transurethral resection of the prostate (TURP).
• Optimizing antibiotic prophylaxis is crucial to prevent postoperative infections.

Purpose of the Study:

• To compare the efficacy of cefazolin and cephalexin in achieving therapeutic drug levels in prostatic tissue and serum.
• To determine which antibiotic is more suitable for preventing acute bacterial prostatitis after TURP.

Main Methods:

• A comparative study involving 18 patients receiving intramuscular cefazolin and 17 patients receiving oral cephalexin preoperatively.
• Measurement of cefazolin and cephalexin concentrations in prostatic tissue and serum.
• Comparison of drug levels with established minimum inhibitory concentrations (MICs).

Main Results:

• Cefazolin demonstrated significantly higher concentrations in both serum and prostatic tissue compared to cephalexin.
• Cefazolin levels frequently surpassed the MICs required for susceptible bacteria.
• Cephalexin levels often remained below the necessary MICs.

Conclusions:

• Cefazolin appears to be a more effective antibiotic than cephalexin for prophylaxis against acute bacterial prostatitis in patients undergoing TURP.
• Higher tissue penetration and sustained therapeutic levels support the preference for cefazolin.