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[Comparative study on clinical effectiveness of mecillinam and pivmecillinam versus ampicillin in acute urinary
Abstract:
30 outpatients suffering from acute urinary infections underwent oral treatment with pivaloyloxymethyl-(2S,5R,6R)-6-(perhydroazepin-1-ylmethylenamino)penicillinate (pivmecillinam) (n = 15) or ampicillin (n = 15) in a first study. In a second study 6-beta-(hexahydro-1H-azepin-1-yl)-methylenamino penicillanic acid (mecillinam) (n = 16) or ampicillin (n = 14) were applied i.v. to 30 patients with pretreated urinary infections. The tolerance of the drugs proved to be comparatively good in both studies. The clinical and antibacterial effectiveness were equally good in the first study. However, in the second study the effectiveness of mecillinam However, in the second study the effectiveness of mecillinam seemed to be comparatively inferior.
Insights
Pivmecillinam and ampicillin showed similar effectiveness for acute urinary infections. However, intravenous mecillinam appeared less effective than ampicillin in a second study involving pretreated patients.
Area of Science:
- Infectious Diseases
- Pharmacology
- Urology
Background:
- Urinary tract infections (UTIs) are common, necessitating effective antibiotic treatments.
- Pivmecillinam and mecillinam are penicillin derivatives with potential utility in treating UTIs.
- Ampicillin serves as a common comparator antibiotic for UTI treatment efficacy studies.
Purpose of the Study:
- To compare the clinical and antibacterial effectiveness of oral pivmecillinam versus ampicillin in outpatients with acute UTIs.
- To evaluate the effectiveness of intravenous mecillinam compared to ampicillin in patients with pretreated UTIs.
Main Methods:
- Study 1: Randomized oral treatment of 30 acute UTI patients with pivmecillinam (n=15) or ampicillin (n=15).
- Study 2: Randomized intravenous treatment of 30 pretreated UTI patients with mecillinam (n=16) or ampicillin (n=14).
- Both studies assessed drug tolerance, clinical outcomes, and antibacterial effectiveness.
Main Results:
- In Study 1, oral pivmecillinam and ampicillin demonstrated comparable clinical and antibacterial effectiveness.
- In Study 2, intravenous mecillinam appeared to be comparatively inferior in effectiveness to ampicillin for pretreated UTIs.
- Drug tolerance was generally good for all treatments in both studies.
Conclusions:
- Oral pivmecillinam is a viable treatment option for acute UTIs, showing similar efficacy to ampicillin.
- Intravenous mecillinam may be less effective than ampicillin for pretreated urinary infections.
- Further research may be warranted to clarify the role of mecillinam in specific UTI patient populations.