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Open Access Characterization of Rabbit Pasteurella multocida Isolates by Use of Whole-Cell, Outer-Membrane, and Polymerase Chain Reaction Typing

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Purpose: To characterize Pasteurella multocida isolates from laboratory rabbits using serotyping, sodium dodecyl sulfate-polyacrylamide gel electrophoresis of whole-cell proteins (WCPs) and outer-membrane proteins (OMPs), and polymerase chain reaction (PCR) fingerprinting.

Methods: Fifty isolates were obtained from five sources: ATCC (1), Oklahoma (4), Michigan (9), Minnesota (7), and Texas (29). The PCR fingerprinting was conducted using two minisatellite probes for M13 and a modified M13 core sequence and two microsatellite probes—(GTG)5 and (GACA)4.

Results: Forty-five isolates were serogroup A, and five were serogroup D. Ten WCP patterns (W1–W10) with one variation (W1a) and 10 OMP (OM1-OM10) patterns were found. Primers M13 phage, modified M13 phage, (GTG)5, and (GACA)4 generated 7, 9, 5, and 9 fingerprint types, respectively. Combination of WCP, OMP, and PCR fingerprint results yielded 39 groups with a discrimination index of 0.98. The PCR fingerprint results generally indicated clonal association among isolates within geographic locations except for the isolates from Texas, which varied markedly in PCR fingerprint types.

Conclusion: Single primer PCR fingerprinting provided a simple and rapid means of typing P. multocida isolates from laboratory rabbits. Combinations of conventional and molecular typing enhanced differentiation among P. multocida isolated from rabbits with pasteurellosis.

Document Type: Research Article

Publication date: October 1, 1999

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  • Comparative Medicine (CM), an international journal of comparative and experimental medicine, is the leading English-language publication in the field and is ranked by the Science Citation Index in the upper third of all scientific journals. The mission of CM is to disseminate high-quality, peer-reviewed information that expands biomedical knowledge and promotes human and animal health through the study of laboratory animal disease, animal models of disease, and basic biologic mechanisms related to disease in people and animals.

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