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Journal of Comparative Pathology

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https://www.readbyqxmd.com/read/28320532/atypical-histiocytosis-in-red-squirrels-sciurus-vulgaris
#1
S H Smith, K Stevenson, J Del-Pozo, S Moss, A Meredith
Four red squirrels (Sciurus vulgaris) were subjected to necropsy examination over a 3-year period as part of a broader surveillance study. The squirrels presented with cutaneous, subcutaneous and/or internal swellings and nodules that consisted microscopically of sheets of atypical round cells and multinucleated giant cells. There was moderate anisokaryosis with rare mitoses. Nuclei ranged from oval to indented or C-shaped and some were bizarre, twisted or multilobulated. Many giant cells also had a bizarre morphology, with anisokaryosis within individual cells...
March 17, 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28318536/chromobacterium-violaceum-infection-in-a-horse
#2
Márcia Elisa Hammerschmitt, Veronica Machado Rolim, Gustavo Geraldo Medina Snel, Franciele Maboni Siqueira, David Driemeier, Saulo Petinatti Pavarini
Chromobacterium violaceum is an opportunistic pathogen of mammals that produces characteristic violet pigment in bacterial culture. We report pneumonia and septicaemia caused by C. violaceum in a horse. Necropsy examination was performed on a 3-year-old Quarter Horse stallion with a history of recurrent episodes of pneumonia, fever, dyspnoea and sanguineous nasal discharge. The lungs were not collapsed, but they contained dark red foci mixed with white areas, and multiple nodules of firm consistency. Within the liver and kidney there were randomly distributed, multifocal, white pinpoint lesions (0...
March 16, 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28284556/morphology-and-morphometry-of-the-lung-in-corn-snakes-pantherophis-guttatus-infected-with-three-different-strains-of-ferlavirus
#3
J M Starck, A Neul, V Schmidt, T Kolb, S Franz-Guess, D Balcecean, M Pees
Ophidian paramyxovirus (ferlavirus) is a global threat to reptilian sauropsids in herpetological collections, with occasional but fatal effects. This study characterizes the effects of three different genetic strains of ferlavirus on the dynamic changes of histology and morphometry of the lung of corn snakes (Pantherophis guttatus). Lungs from 42 corn snakes were either sham-infected or infected experimentally under standardized conditions. From 4 to 49 days after intratracheal inoculation, the lungs were examined qualitatively and quantitatively...
March 8, 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28258732/immunohistochemical-expression-of-placental-alkaline-phosphatase-in-five-cases-of-seminoma-in-rabbits
#4
B Banco, J Ferreira da Silva, S Cotti Cometti, D Stefanello, V Grieco
Testicular seminoma is reported in the rabbit but data about the immunophenotype of these tumours are lacking. The classification of human testicular germ cell tumours includes spermatocytic tumour (ST) originating from the post-pubertal spermatogonia/spermatocytes, which metastasizes rarely, and seminoma (SE), originating from gonocytes, which is malignant and metastasizes frequently. Gonocytes express placental alkaline phosphatase (PLAP) and are stained with periodic acid-Schiff (PAS). We report five cases of seminoma in pet rabbits...
February 28, 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28238470/fatal-salmonellosis-in-captive-maras-dolichotis-patagonum-caused-by-salmonella-enteritidis
#5
S Nakamura, Y Yoshimura, H Hayashidani, T Iwata, S Iseda, Y Une
We report epidemic occurrences of fatal salmonellosis caused by Salmonella Enteritidis in captive maras (Dolichotis patagonum) in a zoological garden in Japan. The deaths were sudden or followed a peracute course within a few hours of the first observations of clinical abnormalities. Gross lesions included haemorrhages in the subcutis and skeletal muscles, liver, spleen, lung, heart and gastrointestinal tract. Microscopically, there were haemorrhagic and necrotizing lesions with gram-negative bacilli in the liver, spleen, small intestine and Peyer's patches...
February 23, 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28233523/mycobacterial-arthritis-and-synovitis-in-painted-reed-frogs-hyperolius-marmoratus
#6
M Barrows, K Koeppel, A Michel, E Mitchell
Several species of atypical mycobacteria have been isolated from wild and captive amphibians. In captive anurans, cutaneous and visceral mycobacteriosis are common and can result in significant mortality, particularly when animals are immunocompromised. Mycobacterial arthritis and synovitis are reported rarely in amphibians. We describe 20 cases in painted reed frogs (Hyperolius marmoratus), which presented with cachexia, limb paresis or paralysis or 'spindly leg syndrome'. Histopathology revealed multifocal histiocytic to granulomatous synovitis affecting appendicular, rib or spinal intervertebral joints...
February 20, 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28233522/comparison-of-clinical-and-pathological-diagnoses-in-cats-and-dogs
#7
T I Schertenleib, A Pospischil, M Hässig, P R Kircher, M Hilbe
The comparison of clinical ante-mortem and pathological post-mortem diagnoses is a prerequisite for quality control, but is rarely done in veterinary medicine. This study reports the occurrence and concurrence of clinical and pathological diagnoses linked to death in 1,000 cats and 1,000 dogs examined and subjected to necropsy examination at the University of Zurich, Switzerland. Potential factors influencing the correlation between diagnoses were examined retrospectively. In 5.8% of cats and 5.2% of dogs no diagnosis was made; in 2...
February 20, 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28238305/polyomavirus-infection-in-gouldian-finches-erythrura-gouldiae-and-other-pet-birds-of-the-family-estrildidae
#8
E Circella, A Caroli, M Marino, M Legretto, N Pugliese, G Bozzo, G Cocciolo, D Dibari, A Camarda
A syndrome characterized by apathy, diarrhoea and high mortality of nestlings was observed in a flock of pet birds of the family Estrildidae. Enlargement of the liver, pulmonary congestion and urate accretions in the kidney were observed. Microscopically, there was glomerular atrophy, oedema and congestion of the lungs and necrosis and fibrosis of the liver. Cowdry type B intranuclear inclusion bodies were detected in the tissues. Polyomavirus was detected by polymerase chain reaction. The entire genome of the virus was amplified and sequenced, revealing 99 % identity to the sequence of finch polyomavirus isolated from the Eurasian bullfinch (family Fringillidae)...
February 18, 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28213989/the-post-mortem-examination-in-ruminants-and-its-possible-benefit-to-ruminant-clinical-medicine
#9
K Wäsle, A Pospischil, M Hässig, C Gerspach, M Hilbe
To highlight the important role of post-mortem examination of ruminants and to identify possible benefits for modern ruminant medicine, a comparison of clinical and pathological diagnoses was conducted and influencing factors were identified. For this purpose, results from 2,000 ruminants that had undergone necropsy examination at the University of Zurich, Switzerland, were analysed retrospectively. Both clinical and pathological diagnoses were available for 81.40% of cattle, 80.22% of sheep and 66.66% of goats; no diagnoses were available for 3...
February 14, 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28196645/oral-squamous-cell-carcinoma-in-three-related-kowari-dasyuroides-byrnei
#10
Richard Saunders, Rowena Killick, Michelle Barrows, Mark Stidworthy
We report three kowari (Dasyuroides byrnei) with squamous cell carcinoma affecting the gingiva. These cases occurred in rapid succession in a related group of individuals of similar age, suggesting a familial tendency to this condition and a typical age of presentation. Other conditions affecting the oral cavity can mimic the appearance of oral squamous cell carcinoma in this species, and so knowledge of this condition can assist the veterinarian in making rapid decisions regarding prognosis and improving the welfare of these animals...
February 11, 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28185624/clinical-pathology-of-the-critically-endangered-gough-bunting-rowettia-goughensis
#11
M P Dagleish, P G Ryan, S Girling, A L Bond
The Gough bunting (Rowettia goughensis) is indigenous to Gough Island and critically endangered due to predation by invasive house mice (Mus musculus). A planned ecosystem restoration by eradication of house mice via aerially delivered rodenticide requires a reproductively balanced population of Gough buntings being held in captivity to avoid primary and secondary poisoning. To aid disease detection during the period of captivity, Gough buntings (n = 25; five adult females, 15 adult males and five juveniles) were captured, measured and sampled to determine reference ranges for routine haematological and biochemical parameters and to identify any faecal bacterial species and intestinal and haemoparasites...
February 6, 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28161098/peracute-bacterial-meningitis-due-to-infection-with-klebsiella-pneumoniae-in-captive-bred-ruffed-lemurs-varecia-variegate
#12
E Sasaki, T Tokiwa, K Tsugo, Y Higashi, H Hori, Y Une
We describe the development of neurological signs in four juvenile black-and-white ruffed lemurs (Varecia variegate), housed at a petting zoo in Japan. The clinical course was severe, with three lemurs dying within 1 day of the appearance of clinical signs. The other lemur was treated and survived. Pathological analyses demonstrated meningitis and the presence of gram-negative bacilli in the cerebrum, cerebellum, palatine tonsil and liver. Klebsiella pneumoniae was isolated from the brain of all of the dead lemurs...
February 1, 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28089357/localization-of-toll-like-receptor-tlr-2-and-tlr4-mrna-in-the-colorectal-mucosa-of-miniature-dachshunds-with-inflammatory-colorectal-polyps
#13
N Yokoyama, H Ohta, J Yamazaki, Y Kagawa, O Ichii, N Khoirun, T Morita, T Osuga, S Y Lim, N Sasaki, K Morishita, K Nakamura, M Takiguchi
Inflammatory colorectal polyps (ICRPs) are characterized by the formation of multiple or solitary polyps with marked neutrophil infiltration in the colorectal area, and are speculated to be a novel form of breed-specific canine idiopathic inflammatory bowel disease (IBD). In human IBD, toll-like receptor (TLR) 2 and TLR4 have been reported to be involved in the pathogenesis of the disease. The aim of this study was to evaluate the expression of TLR2 and TLR4 mRNA in the colorectal mucosa of dogs with ICRPs by in-situ hybridization using an RNAscope assay...
January 12, 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28087057/120-years-of-tuberculosis-research-an-historical-perspective-from-the-archive-of-the-journal-of-comparative-pathology
#14
EDITORIAL
S Kennedy
No abstract text is available yet for this article.
January 10, 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28011041/establishment-of-a-patient-derived-xenograft-of-canine-enteropathy-associated-t-cell-lymphoma-large-cell-type
#15
K S Im, J H Kim, A J Graef, I Cornax, D M Seelig, M G O'Sullivan, R C Kovi, J F Modiano
The pathogenesis of canine T-cell lymphoma remains incompletely understood, partly because there are no well-established in-vivo models to study these malignancies. For this study, we generated a patient-derived tumour xenograft (PDTX) from a 10-year-old neutered male golden retriever dog with enteropathy-associated intestinal T-cell lymphoma, large cell type. One of two female, 15-week-old beige/nude/XID mice developed a visible tumour 7 weeks after sections of tumour material from the spleen were surgically implanted...
January 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/27899174/concurrent-gliosarcoma-and-choroid-plexus-carcinoma-in-a-cow
#16
A Ortloff, J Neumann, O Illanes
Brain tumours in cattle are uncommon and the spontaneous development of primary brain tumours of different histological types is rare in both man and animals. In man, multiple concurrent primary tumours of different types are occasionally described. We report the rare simultaneous occurrence of two different primary brain tumours, gliosarcoma and choroid plexus carcinoma, diagnosed by microscopical and immunofluorescence evaluation in an 8-year-old cow with a 2-month history of neurological disease. Gliosarcoma is a rare variant of glioblastoma multiforme, characterized by the presence of malignant glial cells and mesenchymal tissue...
January 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/27865423/embryonal-rhabdomyosarcoma-of-the-oesophagus-in-a-young-dog
#17
N Devriendt, L Van Brantegem, A Willems, E Raes, H de Rooster
A 15-month-old great Dane dog, showing clinical signs related to hypertrophic osteopathy, was diagnosed radiographically with a mass in the region of the thoracic oesophagus. Exploratory thoracotomy revealed an extensive, highly vascularized and locally invasive oesophageal mass and the presence of nodules in adjacent lung lobes. The dog was humanely destroyed intra-operatively. Histological examination revealed that the mass was an embryonal rhabdomyosarcoma. This is the first report of rhabdomyosarcoma of the oesophagus of a dog...
January 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/27863700/the-journal-of-comparative-pathology-educational-trust-2016-awards
#18
EDITORIAL
M J Day
No abstract text is available yet for this article.
January 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28041618/pyogenic-ventriculitis-and-ventricular-empyema-associated-with-staphylococcus-pseudintermedius-in-a-puppy
#19
S A Headley, L G Pretto-Giordano, D F Nóbrega, C S Altrão, L A Villas-Boas, A A Alfieri, A P F R L Bracarense
A 40-day-old male, blue heeler puppy with hindlimb ataxia, nystagmus, apathy, motor incoordination and hyperaesthesia of the forelimbs died 3 days after the onset of clinical signs. Significant gross findings included cerebellar herniation, cerebral oedema and dilation of the third and right lateral cerebral ventricles due to the accumulation of a purulent exudate. Histopathological examination revealed pyogenic ventriculitis and purulent meningoencephalitis. Pure colonies of a coagulase-positive Staphylococcus were isolated from the purulent cerebral exudate...
December 29, 2016: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28034455/proliferative-enteropathy-caused-by-lawsonia-intracellularis-in-chickens
#20
T Ohta, K Kimura, K Katsuda, H Kobayashi, O Mikami, M Haritani, T Onodera
Proliferative enteropathy (PE) is an infectious disease caused by Lawsonia intracellularis (Li), an obligate intracellular bacterium. PE is endemic in swine herds and has been reported in a variety of mammals including horses, hamsters, rabbits, rats, guinea pigs, ferrets, foxes, dogs, sheep, deer and non-human primates. Avian cases are reported only in ratite birds, including emus and ostriches. Some studies show an absence of Lawsonia spp. infection in chickens. In this study, we performed morphological and bacteriological examinations on the intestines of two broiler chickens that had been condemned at a poultry slaughter plant in Japan due to intestinal haemorrhage, which was a result of focal coccidial enteritis...
December 26, 2016: Journal of Comparative Pathology
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