Development of antibiotic resistance inMycoplasma gallisepticum in vitro
| Autor: | A. Zanella, M. Stonfer, A. Pratelli, Piera Anna Martino |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Mycoplasma gallisepticum
General Immunology and Microbiology medicine.drug_class animal diseases Antibiotics Spiramycin Erythromycin biochemical phenomena metabolism and nutrition Tylosin Biology biology.organism_classification Microbiology chemistry.chemical_compound Antibiotic resistance Food Animals chemistry Streptomycin medicine Enrofloxacin Animal Science and Zoology medicine.drug |
| Zdroj: | Avian Pathology. 27:591-596 |
| ISSN: | 1465-3338 0307-9457 |
| DOI: | 10.1080/03079459808419389 |
| Popis: | The results of in vitro tests for induction of antibiotic resistance in some strains of Mycoplasma gallisepticum are reported. The number of passages required to induce resistance varied considerably between different antibiotics. In two groups of tests, with different strains of M. gallisepticum, resistance (/= 1 mg/ml) to streptomycin appeared after two to three passages, to erythromycin and spiramycin after five to eight passages, to tylosin after nine to eleven and to enrofloxacin after eight to ten passages. With chlortetracycline the increase in resistance was very low (no more than ten times the starting minimal inhibitory concentration). Cross-sensitivity tests using strains with induced resistance to the different antibiotics demonstrated that those which were resistant to tylosin were also resistant to other macrolides (1 mg/ml), whereas strains made resistant to erythromycin and spiramycin appeared only less sensitive (2 to 200 mug/ml) to tylosin in comparison with the original strains. Streptomycin, chlortetracycline and enrofloxacin induced very little or no cross-resistance. |
| Databáze: | OpenAIRE |
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