| Content Provider | Springer Nature : BioMed Central |
|---|---|
| Author | Schuwerk, Lukas Hoeltig, Doris Waldmann, Karl-Heinz Valentin-Weigand, Peter Rohde, Judith |
| Abstract | Serotyping is the most common method to characterize field isolates of Actinobacillus (A.) pleuropneumoniae, the etiological agent of porcine pleuropneumonia. Based on serology, many farms seem to be infected and antibodies against a wide variety of serovars are detectable, but, so far it is unknown to what degree respective serovars contribute to outbreaks of clinical manifest disease. In this study, 213 German A. pleuropneumoniae field isolates retrieved for diagnostic purposes from outbreaks of porcine pleuropneumonia between 2010 and 2019 were genetically serotyped and analyzed regarding their apx-toxin gene profile using molecular methods. Serotyping revealed a prominent role of serovar 2 in clinical cases (64% of all isolates) and an increase in the detection of this serovar since 2010 in German isolates. Serovar 9/11 followed as the second most frequent serovar with about 15% of the isolates. Furthermore, very recently described serovars 16 (n = 2) and 18 (n = 8) were detected. Most isolates (93.4%) showed apx-profiles typical for the respective serovar. However, this does not hold true for isolates of serovar 18, as 75% (n = 6) of all isolates of this serovar deviated uniformly from the “typical” apx-gene profile of the reference strain 7311555. Notably, isolates from systemic lesions such as joints or meninges did not harbor the complete apxICABD operon which is considered typical for highly virulent strains. Furthermore, the extremely low occurrence (n = 1) of NAD independent (biovar II) isolates in German A. pleuropneumoniae was evident in our collection of clinical isolates. |
| Related Links | https://veterinaryresearch.biomedcentral.com/counter/pdf/10.1186/s13567-020-00890-x.pdf |
| Ending Page | 10 |
| Page Count | 10 |
| Starting Page | 1 |
| File Format | HTM / HTML |
| ISSN | 12979716 |
| DOI | 10.1186/s13567-020-00890-x |
| Journal | Veterinary Research |
| Issue Number | 1 |
| Volume Number | 52 |
| Language | English |
| Publisher | BioMed Central |
| Publisher Date | 2021-01-20 |
| Access Restriction | Open |
| Subject Keyword | Veterinary Medicine Veterinary Science Virology Microbiology Immunology Actinobacillus pleuropneumoniae apx Serotyping Virulence Atypical Biovar Systemic Veterinary Medicine/Veterinary Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Veterinary Medicine |
| Journal Impact Factor | 3.7/2023 |
| 5-Year Journal Impact Factor | 3.8/2023 |
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