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

doi:10.1292/jvms.24-0069

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

Author information

Mio KOBAYASHI
Laboratory of Veterinary Pathology, Cooperative Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
Cooperative Division of Veterinary Sciences, Tokyo University of Agriculture and Technology, Tokyo, Japan
Keisuke TAKESUE
Laboratory of Veterinary Pathology, Cooperative Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
Tetsuhito KIGATA
Laboratory of Veterinary Anatomy, Cooperative Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
Natsumi KOBAYASHI
Laboratory of Veterinary Toxicology, Cooperative Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
Susumu IWAIDE
Cooperative Division of Veterinary Sciences, Tokyo University of Agriculture and Technology, Tokyo, Japan
Laboratory of Veterinary Toxicology, Cooperative Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
Tomoaki MURAKAMI
Laboratory of Veterinary Toxicology, Cooperative Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
Hayato HARIMA
Laboratory of Veterinary Public Health, Cooperative Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
Akiko YAMAZAKI
Cooperative Department of Veterinary Medicine, Iwate University, Iwate, Japan
Daigo AZAKAMI
Animal Medical Center, Tokyo University of Agriculture and Technology, Tokyo, Japan
Laboratory of Veterinary Clinical Oncology, Tokyo University of Agriculture and Technology, Tokyo, Japan
Makoto SHIBUTANI
Laboratory of Veterinary Pathology, Cooperative Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
Toshinori YOSHIDA
Laboratory of Veterinary Pathology, Cooperative Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan

Keywords: malacia, pigeon protozoan encephalitis, rock pigeon, Sarcocystis calchasi

JOURNAL OPEN ACCESS
Supplementary material

2024 Volume 86 Issue 8 Pages 906-910

DOI https://doi.org/10.1292/jvms.24-0069

Browse “Advance online publication” version

Details

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.

Corresponding author

Register with J-STAGE for free!