Simple test for identifying penicillinase-producing staphylococci

Simple test for identifying penicillinase-producing staphylococci.

The resistance of staphylococci to penicillin depends primarily on the ability of the organism to produce penicillinase (f3-lactamase). In some strains of potentially penicillin-resistant staphylococci, demonstration in vitro of resistance (i.e., of penicillinase production) may require not only prior induction of synthesis of the enzyme but also a highly sensitive method for detecting its pres...

Pyrrolidonyl peptidase activity: a simple test for differentiating staphylococci.

Identification of Penicillinase Producing Strains

The auxotypes and serogroups of 250 consecutive isolates of Neisseria gonorrhoeae from Franceville, Gabon, including 33 penicillinase producing (PPNG) strains, were identified and the results tabulated for four periods. The PPNG and certain non-PPNG strains were isolated in clusters against a relatively stable pattern of non-PPNG biotypes. Most of the non-PPNG strains were non-requiring or prol...

Rapid penicillinase paper strip test for detection of beta-lactamase-producing Haemophilus influenzae and Neisseria gonorrhoeae.

A modified 1-min iodometric paper strip test for penicillinase activity was developed for detection of beta-lactamase-producing isolates of Haemophilus influenzae and Neisseria gonorrhoeae. The test is simple to perform and uses reagent-impregnated strips that may be stored for 1 year or more prior to use.

Penicillinase-producing gonococci in the Netherlands.

Probably most penicillinase-producing strains of Neisseria gonorrhoeae (PPNG) isolated in the Netherlands are sent to the Laboratory for Chemotherapy of the Rijks Instituut voor de Volksgezondheid (RIV). The co-operation between the RIV and the Office of the Chief Medical Officer of Health (CMOH) has resulted in a quarterly review of the PPNG strains isolated by the RIV Laboratory for Chemother...