نتایج جستجو برای: penicillinase

تعداد نتایج: 945  

Journal: :The British journal of venereal diseases 1983
W S Ng P Y Chau J Ling P Echeverria R Rockhill K Arnold

Sixty four penicillinase-producing Neisseria gonorrhoeae (PPNG) and 24 non-penicillinase-producing (non-PPNG) strains isolated from six different south east Asian localities were tested by the agar dilution method against 15 antibiotics. All isolates were susceptible to spectinomycin and sulphamethoxazole-trimethoprim (19:1 ratio). A large proportion of both PPNG and non-PPNG strains showed, ho...

Journal: :Genitourinary medicine 1986
C A Ison J Gedney J R Harris C S Easmon

Though the incidence of gonorrhoea caused by penicillinase producing Neisseria gonorrhoeae (PPNG) strains at St Mary's Hospital rose rapidly from 1980 to reach 6.2% in 1982, it declined in 1983 (8.6%) and in 1984 (6.5%), a trend that has continued in 1985. The use of penicillinase stable antibiotics or more effective contact tracing are unlikely to be responsible for this recent decline. We hav...

Journal: :Genitourinary medicine 1991
C A Ison C S Easmon

OBJECTIVE To study the epidemiology of Neisseria gonorrhoeae that exhibit both chromosomal and plasmid-mediated resistance to penicillin. MATERIALS AND METHODS A total of 1589 strains of N gonorrhoeae isolated from patients attending St Mary's Hospital, London were tested for both their susceptibility to penicillin and for their auxotype and serotype. RESULTS Of the 940 non-penicillinase pr...

Journal: :Journal of bacteriology 1968
B K Ghosh M G Sargent J O Lampen

Cells of uninduced Bacillus licheniformis (strain 749) in mid-logarithmic phase have no extensive intracytoplasmic membrane. After induction with cephalosporin C, characteristic organelles that contain tubules and vesicles with single-layered membranes and no visible internal substructure can be seen in thin sections in the periplasm. A magnoconstitutive penicillinase producer (749/C) contains ...

Journal: :Antimicrobial agents and chemotherapy 1977
J H Jorgensen J C Lee G A Alexander

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.

Journal: :Antimicrobial agents and chemotherapy 1978
P D Duck J R Dillon L Eidus

Thiamphenicol was compared with penicillin, tetracycline, and chloramphenicol for its ability to inhibit 530 isolates of Neisseria gonorrhoeae, including 13 penicillinase-producing isolates. Thiamphenicol proved to be as active as chloramphenicol in inhibiting all of the isolates.

Journal: :Genitourinary medicine 1986
J R Dillon M Pauzé K H Yeung

Though the number of penicillinase producing Neisseria gonorrhoeae (PPNG) strains isolated in Canada comprises under 1% of all gonococcal isolates, it continues to increase appreciably each year. Most strains are imported from areas of endemic infection with PPNG strains. Two local outbreaks in 1984, however, were notable for the number of patients infected and for the distinctive phenotypes of...

Journal: :Proceedings of the National Academy of Sciences 1969

Journal: :Sexually Transmitted Infections 1986

2004
E FROST B IVANOFF

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...

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