Pathological findings in four aborted bovine fetuses with isolation or detection of Ureaplasma diversum
2016
Iribe, T. (Yamaguchi Seibu Livestock Health and Hygiene Service Center, Shimonoseki (Japan)) | Ohishi, D. | Yokoyama, A. | Tanimura, N.
Ureaplasma diversum was isolated or detected in four cases of Japanese Black and Japanese Polled aborted fetuses in Yamaguchi prefecture. In all cases pneumonic lesions were histopathologically confirmed. Pneumonic lesions had mononuclear cell infiltration mainly consisting of lymphocytes, which had characteristic nodules and follicles. In the placenta of Case 1 interstitial edema, mononuclear cell infiltration, arteritis with thrombus formation, and chorionic epithelial necrosis were present. In regard to the sensitivity of detection for U. diversum, the genetic test was more effective than cultivation. PCR using DNA that was extracted from paraffin-embedded lesion tissue showed a positive reaction regardless of the PCR negative when using organ emulsion. These results suggest the possibility that pneumonia and fetal placental lesions were caused by U. diversum and were related to the Japanese beef cattle abortions.
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