Clostridium piliforme encephalitis in a weaver bird (Ploceus castaneiceps)

Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc
Asli MeteLeslie Woods

Abstract

A juvenile Taveta golden weaver (Ploceus castaneiceps) bird housed in a zoo aviary developed a sudden onset of neurological signs. The bird demonstrated head tilt, rolling onto its back, and inability to perch. Euthanasia was elected due to lack of response to intensive care, and a necropsy was performed. There were no significant abnormal findings on gross examination. On histopathology, the remarkable findings were localized to the brain and consisted of multifocal cerebral microabscesses and rarefaction. Filamentous rod-shaped bacteria were present within and at the periphery of the necrotic foci, and dispersed throughout the neuroparenchyma and intracellularly in neurons. The bacteria were Gram negative, and Warthin-Starry stain demonstrated characteristic "hay stacking." Real-time polymerase chain reaction analysis of the brain identified the agent as Clostridium piliforme. An additional microscopic finding was severe crypt enteritis; however, the bacteria were not observed in the intestinal sections.

References

May 18, 2001·Veterinary Pathology·J T RaymondM M Garner
Nov 28, 2002·Experimental Animals·Toshinori FurukawaEiko Okada
Apr 9, 2008·Avian Pathology : Journal of the W.V.P.A·L BanoS F Bilgili
Dec 30, 2008·Veterinary Pathology·S A HeadleyA Sukura
Apr 14, 2009·The Veterinary Record·S F E Scholes, G T Edwards

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Citations

Apr 6, 2013·The Journal of Veterinary Medical Science·Keiko YoshidaKazuyuki Uchida
Jul 13, 2017·Journal of Wildlife Diseases·Aslı MeteLeslie Woods
Nov 19, 2019·Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·Mauricio A Navarro, Francisco A Uzal
Jul 10, 2021·Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·Juan A GarcíaFrancisco A Uzal

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Methods Mentioned

BETA
light microscopy
PCR

Software Mentioned

BLAST

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