Endobronchial inoculation with Apx toxins of Actinobacillus pleuropneumoniae leads to pleuropneumonia in pigs.
To establish the role of the Apx toxins in the pathogenesis of porcine pleuropneumonia, specific-pathogen-free pigs were inoculated deeply endobronchially with either culture filtrates of Actinobacillus pleuropneumoniae serotype 8 or 9, culture filtrates depleted of the Apx toxins by affinity chromatography, depleted culture filtrate supplemented with purified recombinant Apx toxins (rApx), or purified rApx toxins alone. Results of these experiments indicate that ApxI, ApxIII, and, to a lesser extent, ApxII are the bacterial factors that trigger the development of clinical symptoms and lung lesions typical for porcine pleuropneumonia.
Kamp
E M
EM
Department of Bacteriology, Institute for Animal Science and Health, Lelystad, The Netherlands. E.M.Kamp@id.dlo.nl
Stockhofe-Zurwieden
N
N
van Leengoed
L A
LA
Smits
M A
MA
D016977:Actinobacillus pleuropneumoniae / Q000145:classification / Q000472:pathogenicity*; D000818:Animals; D001426:Bacterial Proteins / Q000494:pharmacology*; D001427:Bacterial Toxins / Q000494:pharmacology*; D001980:Bronchi; D003603:Cytotoxins / Q000494:pharmacology; D004333:Drug Administration Routes; D006460:Hemolysin Proteins; D008168:Lung / Q000473:pathology; D011001:Pleuropneumonia / Q000139:chemically induced / Q000473:pathology / Q000662:veterinary*; D012703:Serotyping; D013045:Species Specificity; D013047:Specific Pathogen-Free Organisms; D013552:Swine; D013553:Swine Diseases / Q000139:chemically induced / Q000209:etiology* / Q000473:pathology
C085361:ApxII toxin, bacteria; C079721:ApxIII toxin protein, Actinobacillus; D001426:Bacterial Proteins; D001427:Bacterial Toxins; D003603:Cytotoxins; D006460:Hemolysin Proteins; C087744:ApxI toxin, Bacteria