Genetic basis of pyocin resistance in Neisseria gonorrhoeae
نویسندگان
چکیده
منابع مشابه
Genetic basis of the association of sulphonamide resistance with methionine auxotrophy in Neisseria gonorrhoeae.
Selection by sulphonamides was investigated in Neisseria gonorrhoeae because a sulphonamide-resistant (Sulr), methionine-requiring (Met-) phenotype that was common in the era of sulphonamide therapy became rare in the penicillin era. Cultures of wild-type (SulsMet+) gonococci on a conventional medium containing sulphadiazine (2-10 micrograms ml-1) yielded numerous, nonidentical mutations of two...
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Neisseria gonorrhoeae lipooligosaccharide (LOS) undergoes antigenic variation at a high rate, and this variation can be monitored by changes in a strain's ability to bind LOS-specific monoclonal antibodies. We report here the cloning and identification of a gene, lsi-2, that can mediate this variation. The DNA sequence of lsi-2 has been determined for N. gonorrhoeae 1291, a strain that expresse...
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Step-wise intrinsic resistance to ampicillin in Neisseria gonorrhoeae was analyzed genetically by DNA-mediated transformation experiments. A first-step ampicillin-resistant (Ampr1) mutant and a second-step ampicillin-resistant (Ampr2) mutant generated during sequential selection were used in these studies. Each selection step was accompanied by an approximate twofold increase in resistance. Fou...
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Fluoroquinolones and broad-spectrum cephalosporins are the most effective antimicrobial agents for the treatment of gonorrhea. However, clinically significant resistance to fluoroquinolones has emerged in Neisseria gonorrhoeae. Fluoroquinolone-resistant strains account for approximately 10% of all gonococcal strains in Hong Kong and the Republic of the Philippines. As many as 50% of strains fro...
متن کاملAntimicrobial resistance in Neisseria gonorrhoeae
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1994
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.176.22.6869-6876.1994