Journal of Veterinary Medical Science
Online ISSN : 1347-7439
Print ISSN : 0916-7250
ISSN-L : 0916-7250
Pathology
Meningoencephalitis with malacia caused by Sarcocystis calchasi in a rock pigeon in Japan
Mio KOBAYASHI, Keisuke TAKESUE, Tetsuhito KIGATA, Natsumi KOBAYASHI, Susumu IWAIDE, Tomoaki MURAKAMI, Hayato HARIMA, Akiko YAMAZAKI, Daigo AZAKAMI, Makoto SHIBUTANI, Toshinori YOSHIDA
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Supplementary material

2024 Volume 86 Issue 8 Pages 906-910

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Abstract

Sarcocystis spp. cause pigeon protozoan encephalitis, a neuronal disease. A female pigeon exhibiting torticollis had a necrotic area in the cerebral hemisphere surrounded by lesions with perivascular cuffing, gliosis, granulomatous foci, and meningitis. Non-necrotic lesions were also observed in the brainstem. Intact and degenerative schizonts were observed within the neuropils and neurons in the lesions. Deoxyribonucleic acid (DNA) was extracted from paraffin-embedded brain tissues and genetically analyzed after gel electrophoresis to determine Sarcocystis spp. using specific primer sets for 28S ribosomal ribonucleic acid and internal transcribed spacer region-1. DNA sequencing confirmed a significant homology with S. calchasi. This is the first report of meningoencephalitis with malacia caused by S. calchasi in a rock pigeon in Japan.

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© 2024 by the Japanese Society of Veterinary Science

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