Plasmids and Resistance to 9 Chemotherapeutic Agents of Pasteurella multocida and Pasteurella haemolytica Epidemiological Aspects
- 12 January 1987
- journal article
- research article
- Published by Wiley in Journal of Veterinary Medicine, Series B
- Vol. 34 (1-10) , 509-518
- https://doi.org/10.1111/j.1439-0450.1987.tb00427.x
Abstract
Summary: A total of 163 strains of P. multocida and 60 of P. haemolytica from different animal species, which had been isolated from 1966 to 1986 in 2 European and 2 Asian countries were investigated for plasmids and for antimicrobial resistance.The agarose gel electrophoresis of alkaline extracted DNA showed that 35 P. multocida (21.5%) and 26 P. haemolytica strains (43.3%) carried plasmid DNA. In all but one strain only one plasmid was seen. The molecular size of the plasmids ranged from 1.3 to 28.8 Megadalton (Md), but small plasmids of ≤ 3.4 Md prevailed in both species.108 P. multocida (66.3%) and all P. haemolytica strains were resistant to one or more of the nine chemotherapeutic agents tested. Distinct differences according to the origin of strains were observed. Most frequently, resistance occurred to Oxacillin, Erythromycin and Streptomycin.Except for 20 plasmid‐carrying cattle strains of P. haemolytica which showed, in addition to the chemotherapeutics mentioned above, resistance to Ampicillin, Penicillin G, Tetracycline and Sulfamethoxazol‐Trimethoprim, no other antimicrobial resistance seemed to be associated with the presence of plasmid DNA.Zusammenfassung: Plasmidvorkommen und Resistenz gegen 9 Chemotherapeutika von Pasteurella multocida und Pasteurella haemolytica unter epidemiologischen Aspekten163 P. multocida und 60 P. haemolytica‐Stämme, die von 1966 bis 1986 von verschiedenen Tierarten isoliert worden waren und aus 2 europäischen und 2 asiatischen Ländern stammten, wurden auf das Vorhandensein von Plasmiden und auf ihre Chemotherapeutika‐Resistenz untersucht.Die Gel‐Elektrophorese von alkalisch‐extrahierter DNA zeigte, daß 35 P. multocida‐Stämme (21,5%) und 26 P. haemolytica‐Stämme (43,3%) Plasmid‐DNA enthielten; mit Ausnahme eines Stammes wurde lediglich ein Plasmid ermittelt. Die Molekülgröße der Plasmide lag zwischen 1,3–28,8 Megadalton (Mdal), doch herrschten kleine Plasmide ≤ 3,4 Mdal in beiden Spezies vor.108 P. multocida‐Stämme (66,3%) und alle P. haemolytica‐Stämme waren gegen ein oder mehrere von 9 überprüften Chemotherapeutika resistent. Es gab deutliche Unterschiede in AbhängigkeitKeywords
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