Tetracycline is a broad-spectrum antibiotic used in humans, animals, and aquaculture; therefore, many bacteria from different ecosystems are exposed to this antibiotic. In order to determine the genetic basis for resistance to tetracycline in bacteria from the oral cavity, saliva and dental plaque samples were obtained from 20 healthy adults who had not taken antibiotics during the previous 3 m...

BACKGROUND Tetracyclines have been extensively used as adjunctives to conventional periodontal therapy. Emergence of resistant strains, however, has been reported. This study evaluated longitudinally the tetracycline resistance patterns of the subgingival microbiota of periodontitis subjects treated with systemic or local tetracycline therapy+scaling and root planing (SRP). METHODS Thirty chr...

Abstract Antibiotic resistance in soil environment has eminently been compared and studied between agricultural pristine soils, the role of concentrated animal feeding operations markedly recognized as one major sources antibiotic resistance. This study described tetracycline small-scale farms pursuit presenting its possible contribution to persistence environment. Results would render addition...

Since February 1985 Neisseria gonorrhoeae resistant to tetracycline has been recognised increasingly in the United States of America, 99 isolates from 17 states having been reported by April 1987.' These isolates exhibit high resistance to tetracycline (minimal inhibitory concentration B 16 mg tetracycline/l), which is encoded on a 25-2 megadalton transmissible plasmid.2 We present what we beli...

Gram-negative bacteria were collected from different clinical labs situated in Karachi. Of these 83 isolates, 99% found resistant against one or more of the following antibiotics: ampicillin, co-amoxiclav, gentamycin, neomycin, streptomycin and tetracycline. Most isolates multi-drug (MDR) having resistance to three antibiotics at a time. For 4.8% Susceptible, 3.6% Intermediate while 91.5% Resis...

This study aimed to identify Staphylococcus sp. and antibiotic resistance in Tutur District, Pasuruan. A total of 273 samples cow's milk were evaluated identified as Furthermore, the test was carried out according CLSI standards. showed 41 isolates 97 positive CMT. The results reported seven resistant antibiotics consisted one multidrug-resistant isolate, i.e. S. saprophyticus which penicillin,...

The tetracycline uptake kinetics of 35 Bifidobacterium longum strains isolated from the human gastrointestinal tract were examined by fluorescence spectroscopy, and the suitability of the technique as a screening tool of tetracycline resistance or susceptibility was determined. The strains were first grouped into three classes based on their corresponding minimum inhibitory concentrations (MICs...

The ecological impact of antibiotic resistance in the absence of selective pressure has been poorly studied. We assessed the carriage of tetracycline resistance genes, persistence in the microbiota, fecal population counts and virulence factor genes in 309 commensal, intestinal Escherichia coli strains obtained from 128 Swedish infants followed during the first year of life with regular quantit...