Simple method for detecting penicillinase-producing Neisseria gonorrhoeae and Staphylococcus aureus

Area of Science:

• Microbiology
• Clinical Diagnostics
• Antimicrobial Resistance

Background:

• Penicillinase-producing Neisseria gonorrhoeae (PPNG) and Staphylococcus aureus pose significant challenges in clinical settings.
• Accurate and rapid detection of these resistant strains is crucial for effective treatment and infection control.
• Existing diagnostic methods can be complex or costly.

Purpose of the Study:

• To evaluate a novel, simple filter paper acidometric test for detecting penicillinase production in Neisseria gonorrhoeae and Staphylococcus aureus.
• To compare the efficacy of this new test against established methods.

Main Methods:

• A filter paper acidometric test utilizing bromocresol purple as a pH indicator was employed.
• The test was performed on 300 strains of Neisseria gonorrhoeae and 70 strains of Staphylococcus aureus.
• Results were compared with the chromogenic cephalosporin and rapid iodometric methods.

Main Results:

• The filter paper acidometric test demonstrated complete agreement with both the chromogenic cephalosporin and rapid iodometric methods.
• The test successfully identified penicillinase-producing strains of both Neisseria gonorrhoeae and Staphylococcus aureus.

Conclusions:

• The filter paper acidometric test is a reliable and accurate method for detecting penicillinase-producing Neisseria gonorrhoeae and Staphylococcus aureus.
• This cost-effective and simple test is suitable for screening penicillinase-producing strains in clinical laboratories.