Pleuropneumonia caused by Actinobacillus pleuropneumoniae biotype 2 in growing and finishing pigs. 1992

R K Frank, and M M Chengappa, and R D Oberst, and K J Hennessy, and S C Henry, and B Fenwick
Department of Veterinary Diagnosis, College of Veterinary Medicine, Kansas State University, Manhattan 66502.

Actinobacillus pleuropneumoniae biotype 2 was isolated in pure culture or as the predominant isolate from the lungs of 9 growing and finishing pigs with pleuropneumonia. Gross and microscopic lesions resembled those caused by A. pleuropneumoniae biotype 1 serotypes (Nos. 1, 5, and 7) traditionally seen in the United States. The overall mortality rate for growing and finishing pigs on this 1,200-sow farrow-to-finish farm ranged from 0.37% to 0.84% per month from July 1990 to February 1991, and mortality due to respiratory disease ranged from 0.17% to 0.52% per month for the same period. This Actinobacillus species did not require V factor (no satellitism on blood agar with a Staphylococcus streak), was strongly beta-hemolytic, and demonstrated restriction fragment length polymorphisms in hybridization studies with A. suis, A. lignieresii, and A. equuli. Biochemically, the isolate most closely resembled A. pleuropneumoniae, and a DNA fragment considered specific for A. pleuropneumoniae biotypes 1 and 2 was demonstrated using polymerase chain reaction. Necrohemorrhagic pleuropneumonia similar to that caused by A. pleuropneumoniae biotype 1 was reproduced experimentally in 2 4-week-old pigs inoculated intratracheally with broth cultures of the A. pleuropneumoniae biotype 2. This study demonstrated the presence of A. pleuropneumoniae biotype 2 in the United States.

UI MeSH Term Description Entries
D008168 Lung Either of the pair of organs occupying the cavity of the thorax that effect the aeration of the blood. Lungs
D009693 Nucleic Acid Hybridization Widely used technique which exploits the ability of complementary sequences in single-stranded DNAs or RNAs to pair with each other to form a double helix. Hybridization can take place between two complimentary DNA sequences, between a single-stranded DNA and a complementary RNA, or between two RNA sequences. The technique is used to detect and isolate specific sequences, measure homology, or define other characteristics of one or both strands. (Kendrew, Encyclopedia of Molecular Biology, 1994, p503) Genomic Hybridization,Acid Hybridization, Nucleic,Acid Hybridizations, Nucleic,Genomic Hybridizations,Hybridization, Genomic,Hybridization, Nucleic Acid,Hybridizations, Genomic,Hybridizations, Nucleic Acid,Nucleic Acid Hybridizations
D011001 Pleuropneumonia Inflammation of the lung parenchyma that is associated with PLEURISY, inflammation of the PLEURA. Pleuropneumonias
D004269 DNA, Bacterial Deoxyribonucleic acid that makes up the genetic material of bacteria. Bacterial DNA
D000189 Actinobacillus Infections Infections with bacteria of the genus ACTINOBACILLUS. Infections, Actinobacillus,Actinobacillus Infection,Infection, Actinobacillus
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D013552 Swine Any of various animals that constitute the family Suidae and comprise stout-bodied, short-legged omnivorous mammals with thick skin, usually covered with coarse bristles, a rather long mobile snout, and small tail. Included are the genera Babyrousa, Phacochoerus (wart hogs), and Sus, the latter containing the domestic pig (see SUS SCROFA). Phacochoerus,Pigs,Suidae,Warthogs,Wart Hogs,Hog, Wart,Hogs, Wart,Wart Hog
D013553 Swine Diseases Diseases of domestic swine and of the wild boar of the genus Sus. Disease, Swine,Diseases, Swine,Swine Disease
D015183 Restriction Mapping Use of restriction endonucleases to analyze and generate a physical map of genomes, genes, or other segments of DNA. Endonuclease Mapping, Restriction,Enzyme Mapping, Restriction,Site Mapping, Restriction,Analysis, Restriction Enzyme,Enzyme Analysis, Restriction,Restriction Enzyme Analysis,Analyses, Restriction Enzyme,Endonuclease Mappings, Restriction,Enzyme Analyses, Restriction,Enzyme Mappings, Restriction,Mapping, Restriction,Mapping, Restriction Endonuclease,Mapping, Restriction Enzyme,Mapping, Restriction Site,Mappings, Restriction,Mappings, Restriction Endonuclease,Mappings, Restriction Enzyme,Mappings, Restriction Site,Restriction Endonuclease Mapping,Restriction Endonuclease Mappings,Restriction Enzyme Analyses,Restriction Enzyme Mapping,Restriction Enzyme Mappings,Restriction Mappings,Restriction Site Mapping,Restriction Site Mappings,Site Mappings, Restriction
D016133 Polymerase Chain Reaction In vitro method for producing large amounts of specific DNA or RNA fragments of defined length and sequence from small amounts of short oligonucleotide flanking sequences (primers). The essential steps include thermal denaturation of the double-stranded target molecules, annealing of the primers to their complementary sequences, and extension of the annealed primers by enzymatic synthesis with DNA polymerase. The reaction is efficient, specific, and extremely sensitive. Uses for the reaction include disease diagnosis, detection of difficult-to-isolate pathogens, mutation analysis, genetic testing, DNA sequencing, and analyzing evolutionary relationships. Anchored PCR,Inverse PCR,Nested PCR,PCR,Anchored Polymerase Chain Reaction,Inverse Polymerase Chain Reaction,Nested Polymerase Chain Reaction,PCR, Anchored,PCR, Inverse,PCR, Nested,Polymerase Chain Reactions,Reaction, Polymerase Chain,Reactions, Polymerase Chain

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