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Four doves (Nos. 1-4 birds) affected with neurological signs (ataxia, circling and torticollis) were investigated pathologically and microbiologically. Viral isolation was tried from the tracheal and cloacal swabs of all 4 birds and from liver, spleen, kidney, heart, lung and brain of Nos. 1 and 2 birds. No viruses were isolated from 4 birds, but they had high serum antibody titers against avian paramyxovirus 1 (APMV-1). Histologically, they had the characteristic histological changes of pigeon APMV-1 infection; nonpurulent encephalitis and interstitial nephritis. Immununohistochemically, APMV-1 antigens were detected in the necrotic renal tubular epithelial cells of 1 bird of them (No. 3 bird). Detection of APMV-1 ribonucleic acid (RNA) from formalin-fixed and paraffin-embedded (FFPE) sections was attempted by reverse transcription-polymerase chain reaction (RT-PCR). Sequencing the RT-PCR product showed the virus RNA belonged to the same APMV-1 genotype (VI) as the strains isolated from the world previous cases of pigeon APMV-1 infection. The RT-PCR of FFPE sections and sequencing of RT-PCR products are useful for molecular epidemiology of the virus when viral isolation from fresh samples is unsuccessful.

journal of veterinary medical science

Immunohistochemistry and molecular epidemiology of avian paramyxovirus 1 from formalin-fixed and paraffin-embedded sections of Japanese doves (&lt;i&gt;Columba livia&lt;/i&gt;) affected with neurological signs