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Veterinary Pathology

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https://www.readbyqxmd.com/read/27879444/histologic-and-immunohistochemical-analyses-of-soft-tissue-sarcomas-from-brca2-mutant-tp53-mutant-zebrafish-are-consistent-with-neural-crest-schwann-cell-origin
#1
L A White, J M Sexton, H R Shive
The zebrafish (Danio rerio) provides a powerful model for analyzing genetic contributors to cancer. Multiple zebrafish lines with cancer-associated genetic mutations develop soft tissue sarcomas that are histologically consistent with malignant peripheral nerve sheath tumor (MPNST). The goal of this study was to determine the phenotype of soft tissue sarcomas in a brca2-mutant/tp53-mutant zebrafish line using immunohistochemical markers that are commonly expressed in mammalian MPNST. We classified 70 soft tissue sarcomas from a brca2-mutant/tp53-mutant zebrafish cohort as MPNST, undifferentiated sarcoma, or other tumor based on histologic features...
November 22, 2016: Veterinary Pathology
https://www.readbyqxmd.com/read/27879443/skeletal-metastasis-of-canine-urothelial-carcinoma-pathologic-and-computed-tomographic-features
#2
V A Charney, M A Miller, H G Heng, H Y Weng, D W Knapp
Invasive urothelial (transitional cell) carcinoma (UC) is the most common cancer in the canine urinary tract. Prolonged survival of dogs with UC due to better management of the primary tumor and prevention of urethral obstruction might have contributed to an apparent increase in distant metastasis. Metastasis to bone is particularly concerning because the ensuing pain often leads to euthanasia; however, little is known of the frequency, site, or nature of UC skeletal metastasis. In a retrospective analysis, 17 (9%) of 188 canine UC cases had histologically confirmed skeletal metastasis, mainly to the vertebrae...
November 22, 2016: Veterinary Pathology
https://www.readbyqxmd.com/read/27879442/salmonella-enterica-serovar-pomona-infection-in-farmed-juvenile-american-alligators-alligator-mississippiensis
#3
K Sakaguchi, J G Nevarez, F Del Piero
A fatal epizootic of salmonellosis occurred in farmed juvenile American alligators in Louisiana. Six animals were examined. Gross lesions included severe fibrinonecrotizing enterocolitis, necrotizing splenitis, coelomic effusion, and perivisceral and pulmonary edema. Microscopic examination revealed severe necrotizing enterocolitis and splenitis with intralesional bacteria and pneumocyte necrosis with fibrin thrombi. Salmonella enterica serovar Pomona was isolated from intestine and lung. Clinical salmonellosis is a rare finding in reptiles and salmonellosis caused by S...
November 22, 2016: Veterinary Pathology
https://www.readbyqxmd.com/read/27879441/amyloid-a-amyloidosis-the-influence-of-genetics-and-seeding-on-pathogenesis-and-the-utility-of-mass-spectrometry
#4
EDITORIAL
P M Gaffney
No abstract text is available yet for this article.
November 22, 2016: Veterinary Pathology
https://www.readbyqxmd.com/read/27698080/tyrosine-kinase-receptor-expression-in-canine-liposarcoma
#5
G Avallone, V Pellegrino, P Roccabianca, E Lepri, L Crippa, G Beha, L De Tolla, G Sarli
The expression of tyrosine kinase receptors is attracting major interest in human and veterinary oncological pathology because of their role as targets for adjuvant therapies. Little is known about tyrosine kinase receptor (TKR) expression in canine liposarcoma (LP), a soft tissue sarcoma. The aim of this study was to evaluate the immunohistochemical expression of the TKRs fibroblast growth factor receptor 1 (FGFR1) and platelet-derived growth factor receptor-β (PDGFRβ); their ligands, fibroblast growth factor 2 (FGF2) and platelet-derived growth factor B (PDGFB); and c-kit in canine LP...
October 3, 2016: Veterinary Pathology
https://www.readbyqxmd.com/read/27694426/pathologic-findings-and-viral-antigen-distribution-during-natural-infection-of-ring-necked-pheasants-with-h5n2-highly-pathogenic-avian-influenza-virus-a
#6
D K Ajithdoss, M K Torchetti, L Badcoe, D S Bradway, T V Baszler
Highly pathogenic avian influenza (HPAI) is a major viral disease of poultry characterized by acute onset, systemic infection, and rapid death. In January 2015, H5N2 HPAI was identified by quantitative reverse transcriptase polymerase chain reaction (qRT-PCR) and gene sequencing as the cause of rapid death in 40 of 390 ring-necked pheasants (approximately 10% mortality), raised in a game bird farm in Washington State. We report clinicopathologic findings and viral antigen distribution in pheasants that died during the outbreak...
September 30, 2016: Veterinary Pathology
https://www.readbyqxmd.com/read/27694425/left-ventricular-apical-aneurysm-in-a-cat-with-primary-cardiomyopathy
#7
C Ramírez-Hernández, A Barbosa-Quintana, R Ramírez-Romero
A 13-year-old female Persian cat died suddenly after severe respiratory distress. At necropsy, the changes were compatible with congestive heart failure. The heart was enlarged with a flabby and puckered sac-like aneurysm at the apex of the left ventricle. The apical zone showed a thin muscular wall arising from the free wall of the left ventricle connected to a bulged saccular area through a wide communication. Microscopically, the wall of the aneurysm was composed of fibrous connective tissue with neovascularization and sparse atrophied myocardial cells at the margins...
September 30, 2016: Veterinary Pathology
https://www.readbyqxmd.com/read/27694424/ocular-lesions-in-red-tailed-hawks-buteo-jamaicensis-with-naturally-acquired-west-nile-disease
#8
A Wünschmann, A G Armién, M Khatri, L C Martinez, M Willette, A Glaser, J Alvarez, P Redig
Ocular lesions are common in red-tailed hawks with West Nile (WN) disease. These lesions consist of pectenitis, choroidal or retinal inflammation, or retinal necrosis, but detailed investigation of the ocular lesions is lacking. Postmortem examination of the eyes of 16 red-tailed hawks with naturally acquired WN disease and 3 red-tailed hawks without WN disease was performed using histopathology, immunohistochemistry for West Nile virus (WNV) antigen, glial fibrillary acid protein, cleaved caspase-3, and the terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling method...
September 30, 2016: Veterinary Pathology
https://www.readbyqxmd.com/read/27694423/posttransplant-lymphoproliferative-disorders-in-neuronal-xenotransplanted-macaques
#9
L Cavicchioli, S Ferraresso, S Westmoreland, S Kaliyaperumal, H Knight, C Crossan, L Scobie, A Danesi, M Vadori, D Trez, R Aron Badin, P Hantraye, E Cozzi
Posttransplant lymphoproliferative disorders (PTLDs) are a heterogeneous group of lymphoid proliferations that occur in the setting of depressed T-cell function due to immunosuppressive therapy used following solid organ transplantation, hematopoietic stem cell transplantation, and also xenotransplantation. In the present study, 28 immunosuppressed parkinsonian Macaca fascicularis were intracerebrally injected with wild-type or CTLA4-Ig transgenic porcine xenografts to identify a suitable strategy to enable long-term cell survival, maturation, and differentiation...
September 30, 2016: Veterinary Pathology
https://www.readbyqxmd.com/read/27681326/genetic-and-biochemical-biomarkers-in-canine-glaucoma
#10
K L Graham, C McCowan, A White
In many health-related fields, there is great interest in the identification of biomarkers that distinguish diseased from healthy individuals. In addition to identifying the diseased state, biomarkers have potential use in predicting disease risk, monitoring disease progression, evaluating treatment efficacy, and informing pathogenesis. This review details the genetic and biochemical markers associated with canine primary glaucoma. While there are numerous molecular markers (biochemical and genetic) associated with glaucoma in dogs, there is no ideal biomarker that allows early diagnosis and/or identification of disease progression...
September 28, 2016: Veterinary Pathology
https://www.readbyqxmd.com/read/27627984/hsp32-and-hsp90-immunoexpression-in-relation-to-kit-pattern-grading-and-mitotic-count-in-canine-cutaneous-mast-cell-tumors
#11
M Romanucci, M Massimini, A Ciccarelli, D Malatesta, L Bongiovanni, A Gasbarre, L Della Salda
Literature data indicate heat shock protein (Hsp) 32 and 90 as potential molecular targets in canine neoplastic mast cells (MCs). However, their immunoexpression patterns in canine mast cell tumors (MCTs) have not been investigated. Thus, the aim of this study was to evaluate the immunohistochemical expression of Hsp32 and Hsp90 in 22 canine cutaneous MCTs, in relation to KIT immunolabeling pattern, histological grade, and mitotic count. All cases showed cytoplasmic labeling of Hsp90, variably associated with nuclear and/or membranous labeling...
September 14, 2016: Veterinary Pathology
https://www.readbyqxmd.com/read/27627983/identification-of-mucosa-invading-and-intravascular-bacteria-in-feline-small-intestinal-lymphoma
#12
S N Hoehne, S P McDonough, M Rishniw, K W Simpson
Persistent bacterial infections of the gastrointestinal mucosa are causally linked to gastric carcinoma and mucosa-associated lymphoid tissue (MALT) lymphoma in people and laboratory animals. We examined the relationship of mucosa-associated bacteria to alimentary lymphoma in cats. Intestinal biopsies from 50 cats with alimentary lymphoma (small cell, n = 33; large cell, n = 17) and 38 controls without lymphoma (normal to minimal change on histopathology, n = 18; lymphocytic-plasmacytic enteritis, n = 20) were evaluated...
September 14, 2016: Veterinary Pathology
https://www.readbyqxmd.com/read/27733705/reviewers-summary
#13
(no author information available yet)
No abstract text is available yet for this article.
November 2016: Veterinary Pathology
https://www.readbyqxmd.com/read/27733704/response-to-regarding-mole-rats-and-cancer
#14
M A Delaney, J M Ward, T F Walsh, S K Chinnadurai, K Kerns, M J Kinsel, P M Treuting
No abstract text is available yet for this article.
November 2016: Veterinary Pathology
https://www.readbyqxmd.com/read/27733703/regarding-mole-rats-and-cancer
#15
J S Welsh, T L Traum
No abstract text is available yet for this article.
November 2016: Veterinary Pathology
https://www.readbyqxmd.com/read/27194431/pheochromocytoma-in-old-world-primates-macaca-mulatta-and-chlorocebus-aethiops
#16
L M A Colgin, D J Schwahn, F Castillo-Alcala, M Kiupel, A D Lewis
Pheochromocytoma, a rarely reported adrenal gland neoplasm in Old World primates, was diagnosed in 5 rhesus macaques (Macaca mulatta) and 2 African green monkeys (Chlorocebus aethiops) from 3 research institutions. Age and sex were available for 6 primates. Two males and 4 females were affected, ranging in age from 9 to 31 years. All neoplasms were unilateral and, in the cases reporting the affected gland, 4 involved the right adrenal gland and 2 involved the left. Diagnosis was established by characteristic histologic features...
November 2016: Veterinary Pathology
https://www.readbyqxmd.com/read/27586238/natural-outbreak-of-bvdv-1d-induced-mucosal-disease-lacking-intestinal-lesions
#17
M V Bianchi, G Konradt, S O de Souza, D M Bassuino, S Silveira, A C S Mósena, C W Canal, S P Pavarini, D Driemeier
Bovine viral diarrhea virus (BVDV) belongs to the Pestivirus genus, which is further divided into subgenotypes (1a-1u and 2a-c). When persistent infection occurs, the calf will be immunotolerant to BVDV and possibly develop mucosal disease. This study describes an outbreak of BVDV-1d-induced mucosal disease lacking intestinal lesions. Eleven calves presented with anorexia, sialorrhea, lameness, recumbency, and death. Three calves were necropsied, showing ulceration of the interdigital skin and the oral and nasal mucosa; linear ulcers in the tongue, esophagus, and rumen; and rounded ulcers in the abomasum...
September 1, 2016: Veterinary Pathology
https://www.readbyqxmd.com/read/27515387/veterinary-forensic-pathology-the-search-for-truth
#18
EDITORIAL
S P McDonough, B J McEwen
Veterinary forensic pathology is emerging as a distinct discipline, and this special issue is a major step forward in establishing the scientific basis of the discipline. A forensic necropsy uses the same skill set needed for investigations of natural disease, but the analytical framework and purpose of forensic pathology differ significantly. The requirement of legal credibility and all that it entails distinguishes the forensic from routine diagnostic cases. Despite the extraordinary depth and breadth of knowledge afforded by their training, almost 75% of veterinary pathologists report that their training has not adequately prepared them to handle forensic cases...
September 2016: Veterinary Pathology
https://www.readbyqxmd.com/read/27480760/forensic-entomology-in-animal-cruelty-cases
#19
A Brundage, J H Byrd
Forensic entomology can be useful to the veterinary professional in cases of animal cruelty. A main application of forensic entomology is to determine the minimum postmortem interval by estimating the time of insect colonization, based on knowledge of the rate of development of pioneer colonizers and on insect species succession during decomposition of animal remains. Since insect development is temperature dependent, these estimates require documentation of the environmental conditions, including ambient temperature...
September 2016: Veterinary Pathology
https://www.readbyqxmd.com/read/27418586/forensic-veterinary-pathology-sharp-injuries-in-animals
#20
A de Siqueira, S E Campusano Cuevas, F A Salvagni, P C Maiorka
Sharp-force injuries are injuries caused by a mechanical force using sharp objects against the skin. Sharp-force injuries are mainly classified as stab, incised, chop, and therapeutic wounds and are less frequent than blunt-force injuries in animals. The analysis of the edges of the wound is crucial, especially if more than one type of lesion is involved. It may be difficult to differentiate between sharp trauma and blunt trauma, because lacerations can resemble incised wounds. The accurate documentation and examination of these injuries may indicate the instrument involved, the relationship between the animal and the perpetrator, and the force of the stab...
September 2016: Veterinary Pathology
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