SENSITIVITY OF NEISSERIA GONORRHOEAE TO PARTIALLY PURIFIED R-TYPE PYOCINES AND A POSSIBLE APPROACH TO EPIDEMIOLOGICAL TYPING

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Abstract
Summary Strains of Neisseria gonorrhoeae from a variety of sources were examined for sensitivity to 11 partially purified R-type pyocines from Pseudomonas aeruginosa. Selective inhibition of gonococci by pyocines of Kageyama groups Rl and R5 was observed. “Matched isolates”, those from consorts or different body sites of individual patients, usually had very similar pyocine-sensitivity patterns and identical sensitivities to five antibiotics tested. This study included local isolates, strains from diverse geographic regions, and strains from disseminated gonococcal infections. It also proposed a relationship between pyocinereceptor sites in the lipopolysaccharide of Ps. aeruginosa and N. gonorrhoeae. Topics needing further evaluation are discussed.