High and low level tetracycline resistance inShigella sonnei
نویسندگان
چکیده
منابع مشابه
Ampicillin resistance of Shigella sonnei.
The ampicillin resistance of clinical isolates of Shigella sonnei is due to beta-lactamase production. Two kinds of resistance are found: low level, nontransmissible; and high level, tranmissible. The nontransmissible type of resistance results from a chromosomal mutation which increases the production of a beta-lactamase that hydrolyses cephalosporins relatively rapidly and gives cephalothin r...
متن کاملHoneybees and Tetracycline Resistance
Like animals and people, insects can serve as both collectors and disseminators of antibiotic resistance genes, as exquisitely demonstrated by a recent study (B. Tian, N. H. Fadhil, J. E. Powell, W. K. Kwong, and N. A. Moran, mBio 3[6]:e00377-12, doi:10.1128/mBio.00377-12, 2012). Notably, the relatively confined ecosystem of the honeybee gut demonstrates a large propensity for harboring a diver...
متن کاملStreptococcal tetracycline resistance mediated at the level of protein synthesis.
The mechanism of tetracycline resistance was examined in strains containing each of the three previously identified resistance determinants in Streptococcus spp. Uptake of tetracycline was measured in tetracycline-sensitive cells as well as in cells containing each of the three resistance determinants. In cells containing tetL, uptake was not observed. However, in sensitive cells and cells cont...
متن کاملIdentification of tet(B), encoding high-level tetracycline resistance, in Neisseria meningitidis.
A Neisseria meningitidis strain, NIID129, with high-level resistance to tetracycline (Tet) was isolated from a Japanese woman’s nasopharynx; the MIC of tetracycline (Pfizer Pharmaceuticals Inc.) was 32 g/ml on Muller-Hinton agar (Difco) as determined by the microdilution method performed in accordance with NCCLS guidelines (6) and 24 g/ml when measured by the Etest (AB Biodisk). In order to det...
متن کاملAntimicrobial susceptibility of Neisseria gonorrhoeae in Zaire: high level plasmid-mediated tetracycline resistance in central Africa.
OBJECTIVE To determine the in vitro antimicrobial susceptibility of gonococcal strains isolated in 1988 among female prostitutes in Kinshasa, Zaire and to characterise strains with high level tetracycline resistance. METHODS Minimal inhibitory concentrations of 8 antimicrobials were measured by agar dilution technique. Plasmid-profiles and serovars were determined. RESULTS Two hundred and t...
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ژورنال
عنوان ژورنال: Journal of Hygiene
سال: 1978
ISSN: 0022-1724
DOI: 10.1017/s0022172400053833