J L Tejedor 1 , A I Vela , A Gibello , A Casamayor , L Domínguez , J F Fernández-Garayzábal Show Affiliations »
Abstract
AIMS: Genetic comparison of Lactococcus garvieae isolated from mammals and fish. METHODS AND RESULTS: One hundred and ninety-seven L. garvieae isolates obtained from trout (n = 153), cow (n = 7) and pigs (n = 37) were genetically characterized by determining their pulsed-field gel electrophoresis (PFGE) profiles after macrorestriction with Bsp120I. Overall, L. garvieae isolates from pigs, cow and trout exhibited distinct PFGE patterns, with a low genetic relationship between them. Isolates from trout generated two pulsotypes [Genetic diversity (GD) 0.01] showing that the fish isolates were more genetically homogenous than the others. The L. garvieae isolates from cows displayed five (GD 0.71) different pulsotypes, while the swine isolates displayed 13 different pulsotypes (GD 0.35). Twenty-one of the 37 swine strains (56.8%) were grouped in a single cluster that included two closely related (93% similarity) pulsotypes. These pulsotypes exhibited a high frequency of isolation from different organs of the animals, and they were also broadly distributed among herds, suggesting a wide distribution across the swine population. This suggests that L. garvieae might be able to colonize different organs of the swine cardio-respiratory system. CONCLUSIONS: Results indicate that most L. garvieae isolates from pigs and trout exhibited a distinct genetic background. SIGNIFICANCE AND IMPACT OF THE STUDY: The present study describes the isolation of L. garvieae from both diseased and healthy pigs for the first time, and the findings suggest that pigs could be a previously unknown reservoir of this pathogen. © No claim to Spanish Government works. Letters in Applied Microbiology ©2011 The Society for Applied Microbiology.
AIMS: Genetic comparison of Lactococcus garvieae isolated from mammals and fish. METHODS AND RESULTS: One hundred and ninety-seven L. garvieae isolates obtained from trout (n = 153), cow (n = 7) and pigs (n = 37) were genetically characterized by determining their pulsed-field gel electrophoresis (PFGE) profiles after macrorestriction with Bsp120I. Overall, L. garvieae isolates from pigs , cow and trout exhibited distinct PFGE patterns, with a low genetic relationship between them. Isolates from trout generated two pulsotypes [Genetic diversity (GD ) 0.01] showing that the fish isolates were more genetically homogenous than the others. The L. garvieae isolates from cows displayed five (GD 0.71) different pulsotypes, while the swine isolates displayed 13 different pulsotypes (GD 0.35). Twenty-one of the 37 swine strains (56.8%) were grouped in a single cluster that included two closely related (93% similarity) pulsotypes. These pulsotypes exhibited a high frequency of isolation from different organs of the animals, and they were also broadly distributed among herds, suggesting a wide distribution across the swine population. This suggests that L. garvieae might be able to colonize different organs of the swine cardio-respiratory system. CONCLUSIONS: Results indicate that most L. garvieae isolates from pigs and trout exhibited a distinct genetic background. SIGNIFICANCE AND IMPACT OF THE STUDY: The present study describes the isolation of L. garvieae from both diseased and healthy pigs for the first time, and the findings suggest that pigs could be a previously unknown reservoir of this pathogen. © No claim to Spanish Government works. Letters in Applied Microbiology ©2011 The Society for Applied Microbiology.
Entities: Disease
Species
Mesh： See more »
Year: 2011
PMID： 21933202 DOI： 10.1111/j.1472-765X.2011.03153.x
Source DB: PubMed Journal: Lett Appl Microbiol ISSN： 0266-8254 Impact factor: 2.858