title: Differentiation of twelve Actinobacillus pleuropneumoniae serotypes by outer membrane lipoprotein gene-based restriction fragment length polymorphism.
abstract: Twelve Actinobacillus pleuropneumoniae serotypes were differentiated by restriction fragment length polymorphism (RFLP) of polymerase chain reaction (PCR)-amplified fragments from the outer membrane lipoprotein (omlA) gene. All 12 reference serotypes and 80 field isolates produced the expected 950-base pair (bp) fragment of the omlA gene by PCR. Combining the RFLP patterns obtained with SfaNI, Bst71I, AluI, NciI, nine distinct patterns were observed in the 12 serotype reference strains. The PCR-based RFLP analysis of omlA genes allows differentiation among the 12 serotypes, with the exception of group 1 (serotypes 1, 9 and 11), and group 2 (serotypes 2 and 8). When the PCR products from the 70 field isolates were subjected to RFLP analysis, 68 showed the same RFLP patterns as their respective serotype reference strain. Two isolates that could not be typed had the same RFLP patterns as those of serotype 5. These results suggest that PCR-based RFLP analysis of the omlA genes may be of value in differentiating among 12 A. pleuropneumoniae serotypes.
authors.affiliation: Department of Veterinary Pathology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University, Building no. 85, San 56-1, Shillim-dong, Kwanak-Gu 151-742, Seoul, Republic of Korea.
authors.forename: W-S
authors.initials: WS
authors.lastname: Cho
authors.forename: C
authors.initials: C
authors.lastname: Chae
mesh_terms: D000189:Actinobacillus Infections / Q000382:microbiology / Q000662:veterinary*; D016977:Actinobacillus pleuropneumoniae / Q000145:classification* / Q000235:genetics*; D000818:Animals; D001425:Bacterial Outer Membrane Proteins / Q000235:genetics*; D017931:DNA Primers; D015964:Gene Expression Regulation, Bacterial; D008074:Lipoproteins / Q000235:genetics*; D016133:Polymerase Chain Reaction / Q000662:veterinary; D012150:Polymorphism, Restriction Fragment Length; D012703:Serotyping; D013552:Swine; D013553:Swine Diseases / Q000382:microbiology*
chemical_list: D001425:Bacterial Outer Membrane Proteins; D017931:DNA Primers; D008074:Lipoproteins; C094096:OmlA protein, bacteria