鶏および赤色野鶏から分離されたUreaplasmaの生物学的性状および血清学的性状

概要

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Attempts were made to isolate ureaplasmas from the oropharynx and cloaca of 114 gallinaceous birds of 22 different species under 12 genera in 3 families. Ureaplasmas were isolated from the throat of all 3 red jungle fowls (Gallus gallus) (100%) and 12 (27.9%) of 43 domestic fowls (Gallus gallus domesticus) examined, but none was isolated from the cloaca. These isolates formed minute colonies measuring 60μm approximately on a solid medium. Electron microscopic observation revealed cells having a size of about 500 nm in diameter bounded by a triple-layered limiting membrane devoid of a rigid cell wall. The isolates proved to require serum for growth and to be susceptible to 2.5% digitonin. They were noted to actively utilize urea but did not form film and spots, nor caused hemolysis on the solid medium. In the growth inhibition test as well as in the metabolism inhibition test, all the ureaplasmas isolated from birds were found to be antigenically interrelated but had no serological relation to ureaplasmas originated from man, monkeys or cattle. The serological properties of these isolates suggest that it would be reasonable to categorize them as an independent group distinct from those isolated from mammals.
1978-12-25