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Journal of Veterinary Diagnostic Investigation

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https://www.readbyqxmd.com/read/28482758/lesions-caused-by-virulent-aeromonas-hydrophila-in-farmed-catfish-ictalurus-punctatus-and-i-punctatus-%C3%A3-i-furcatus-in-mississippi
#1
Wes A Baumgartner, Lorelei Ford, Larry Hanson
In 2009, a virulent strain of Aeromonas hydrophila caused severe disease and high mortalities (motile aeromonad septicemia variant [MASv]) in farmed channel catfish ( Ictalurus punctatus) and hybrid catfish ( I. punctatus × I. furcatus) in eastern Mississippi and Alabama. As is common in MAS, there is severe hemorrhagic dermatitis with ulceration, as well as abdominal hyperemia, petechiation, and mild ascites. Additional findings in MASv cases include panophthalmitis and orbital cellulitis, leading to ocular rupture, and brains are often hyperemic with mild random acute hemorrhage...
May 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28482756/bronchopneumonia-associated-with-mannheimia-granulomatis-infection-in-a-belgian-hare-lepus-europaeus
#2
Ann P Britton, Tony Redford, Erin Zabek, Ken R Sojonky, Andrea P Scouras, Danielle Lewis, Tomy Joseph
Mannheimia granulomatis was first isolated from pneumonic European hares in the 1980s and has since been reported sporadically in pneumonic Swedish roe deer and Australian cattle. Although the pneumonic lesions caused by M. haemolytica in livestock have been extensively studied and reported, little is published with regard to the pneumonic lesions associated with M. granulomatis infection in any species. We describe the histopathology of purulent bronchopneumonia associated with M. granulomatis in a Belgian hare ( Lepus europaeus) resident in British Columbia, Canada, and compare the lesions with those caused by M...
May 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28480825/imported-leishmaniasis-in-a-dog-in-a-sandfly-populated-area-in-northeastern-romania
#3
Geta Pavel, Dorina Timofte, Diana Mocanu, Razvan Malancus, Carmen Solcan
We report the importation of a clinical case of canine leishmaniasis (CanL) in Romania, a country where several types of sandflies are present with the potential to develop a new focus of CanL. The Staffordshire Bull Terrier dog was imported into Romania from Spain 1.5 y before he developed clinical symptomatology that included proliferative dermatitis, lymphadenomegaly, and bilateral uveitis. Hematologic analyses showed regenerative anemia and subacute inflammation. Cytologic examination of lymph node fine-needle aspirates revealed Leishmania spp...
May 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28480803/validation-of-an-improved-anaplasma-antibody-competitive-elisa-for-detection-of-anaplasma-ovis-antibody-in-domestic-sheep
#4
Kathleen L Mason, Michael V Gonzalez, Chungwon Chung, Michelle R Mousel, Stephen N White, Joshua B Taylor, Glen A Scoles
An accurate and simple-to-perform new version of a competitive ELISA (cELISA) kit that became commercially available in 2015 for testing of cattle for antibody to Anaplasma marginale was validated for detection of Anaplasma ovis antibody in domestic sheep. True positives and negatives were identified using nested PCR (nPCR) as the gold standard. Negative bovine control sera supplied with the kit were used to calculate % inhibition (%I), designated bovine control ELISA (BcELISA), and this was compared to %I calculated from negative ovine sera derived from hand-raised, pathogen-free sheep, designated ovine control ELISA (OcELISA)...
May 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28480802/optimization-of-fecal-cytology-in-the-dog-comparison-of-three-sampling-methods
#5
Petros S Frezoulis, Elisavet Angelidou, Anastasia Diakou, Timoleon S Rallis, Mathios E Mylonakis
Dry-mount fecal cytology (FC) is a component of the diagnostic evaluation of gastrointestinal diseases. There is limited information on the possible effect of the sampling method on the cytologic findings of healthy dogs or dogs admitted with diarrhea. We aimed to: (1) establish sampling method-specific expected values of selected cytologic parameters (isolated or clustered epithelial cells, neutrophils, lymphocytes, macrophages, spore-forming rods) in clinically healthy dogs; (2) investigate if the detection of cytologic abnormalities differs among methods in dogs admitted with diarrhea; and (3) investigate if there is any association between FC abnormalities and the anatomic origin (small- or large-bowel diarrhea) or the chronicity of diarrhea...
May 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28467283/pigmented-tumors-in-fallow-deer-dama-dama-11-cases
#6
Kelly L Hughes, Rob J Bildfell, Benjamin Alcantar
Pigmented tumors have been reported infrequently in captive deer. We document herein the clinical progression and gross and histopathologic features of pigmented tumors diagnosed as melanoma and pigmented schwannoma in 11 white fallow deer ( Dama dama). Affected animals were part of a captive herd maintained at a drive-through park in southern Oregon and were 5-17 y of age during the study period (2004-2013). Primary lesion locations included periocular, perineal, and neck tissues, with cutaneous and internal metastases later identified at autopsy in some cases of malignant melanoma...
May 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28467282/development-of-a-quantitative-pcr-assay-for-measurement-of-trichechid-herpesvirus-1-load-in-the-florida-manatee-trichechus-manatus-latirostris
#7
Jason A Ferrante, Galaxia Cortés-Hinojosa, Linda L Archer, James F X Wellehan
Trichechid herpesvirus 1 (TrHV-1) is currently the only known herpesvirus in any sirenian. We hypothesized that stress may lead to recrudescence of TrHV-1 in manatees, thus making TrHV-1 a potential biomarker of stress. We optimized and validated a TrHV-1 real-time quantitative probe hybridization PCR (qPCR) assay that was used to quantify TrHV-1 in manatee peripheral blood mononuclear cells (PBMCs). Average baseline TrHV-1 loads in a clinically healthy wild Florida manatee ( Trichechus manatus latirostris) population ( n = 42) were 40...
May 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28467276/acute-leukemia-in-six-horses-1990-2012
#8
Emily A Barrell, Midori Goto Asakawa, M Julia B Felippe, Thomas J Divers, Tracy Stokol
Acute leukemia is rare in horses. Herein we describe historical, clinicopathologic, and postmortem findings in 6 horses with acute leukemia. Medical records of horses with >20% bone marrow blasts and cytochemical or immunophenotyping results were reviewed. Affected horses were 2-8 y of age and of different breeds and sex. Horses were presented acutely with nonspecific signs (e.g., fever, lethargy). Characteristic hemogram findings were bi- or pancytopenia with low blast numbers. Histologic examination revealed extramedullary infiltrates, especially in lymph nodes, spleen, kidney, liver, and lungs...
May 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28467177/development-of-a-rapid-simple-and-specific-real-time-pcr-assay-for-detection-of-pseudorabies-viral-dna-in-domestic-swine-herds
#9
Katherine A Sayler, Troy Bigelow, Leo G Koster, Sabrina Swenson, Courtney Bounds, Felipe Hernández, Samantha M Wisely
Despite successful eradication of pseudorabies virus (PRV) from the commercial pig industry in the United States in 2004, large populations of feral swine in certain regions act as wildlife reservoirs for the virus. Given the threat of reintroduction of the virus into domestic herds, a rapid, reliable, easily implemented assay is needed for detection of PRV. Although a real-time PCR (rtPCR) assay exists, improvements in rtPCR technology and a greater understanding of the diversity of PRV strains worldwide require an assay that would be easier to implement, more cost effective, and more specific...
May 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28467174/nodular-typhlocolitis-heterakiasis-and-mesenchymal-neoplasia-in-a-ring-necked-pheasant-phasianus-colchicus-with-immunohistochemical-characterization-of-visceral-metastases
#10
Lauren Himmel, Rachel Cianciolo
A 9-y-old, male ring-necked pheasant ( Phasianus colchicus) was autopsied following euthanasia because of acute distress, recumbency, and dyspnea. The bird had experienced a protracted period of neuromuscular disease localized to the left sciatic nerve. Gross and histologic examination of the large intestine revealed intramural nodules predominantly comprised of atypical, whorling spindle cells with small cores of granulomatous inflammation centered on cross-sections of immature adult nematodes. The body structures of these metazoan organisms and clinical disease manifestation are consistent with Heterakis isolonche infection...
May 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28460600/comparison-of-the-bbl-mycobacteria-growth-indicator-tube-the-bactec-12b-and-solid-media-for-the-isolation-of-mycobacterium-bovis
#11
Gary F Yates, Marian Price-Carter, Kirstie Bland, Maree A Joyce, Farina Khan, Melissa Surrey, Geoffrey W de Lisle
We compared different methods for their ability to isolate Mycobacterium bovis from tissue samples from animals with lesions resembling bovine tuberculosis. In the first trial, M. bovis was isolated from 86 of 200 tissue samples that were cultured using 2 liquid media, BACTEC 12B and BBL mycobacteria growth indicator tube (MGIT), and a solid medium, Middlebrook 7H11 supplemented with pyruvate (7H11P). M. bovis was isolated from 2 samples with MGIT but not BACTEC 12B. M. bovis was isolated from 9 samples with BACTEC but not MGIT; these 9 samples came from the North Canterbury/Marlborough region of New Zealand...
April 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28460559/discrimination-of-streptococcus-equi-subsp-equi-and-streptococcus-equi-subsp-zooepidemicus-using-matrix-assisted-laser-desorption-ionization-time-of-flight-mass-spectrometry
#12
Rinosh J Mani, Anil J Thachil, Akhilesh Ramachandran
Accurate and timely identification of infectious etiologies is of great significance in veterinary microbiology, especially for critical diseases such as strangles, a highly contagious disease of horses caused by Streptococcus equi subsp. equi. We evaluated a matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) platform for use in species- and subspecies-level identification of S. equi isolates from horses and compared it with an automated biochemical system. We used 25 clinical isolates each of S...
April 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28425387/zebra-borne-neurotropic-equid-herpesvirus-1-meningoencephalitis-in-a-thomson-s-gazelle-eudorcas-thomsonii
#13
Kanako Sakaguchi, Kenneth Kim, Ingeborg Langohr, Annabel G Wise, Roger K Maes, Gordon Pirie, Tokuma Yanai, Mohie Haridy, Lorrie Gaschen, Fabio Del Piero
We describe the histopathologic, immunohistochemical, and molecular features of a case of meningoencephalitis in a Thomson's gazelle ( Eudorcas thomsonii) naturally infected with zebra-borne equid herpesvirus 1 (EHV-1) and the implications for the molecular detection of zebra-borne EHV-1. A 4-y-old female Thomson's gazelle was submitted for postmortem examination; no gross abnormalities were noted except for meningeal congestion. Microscopic evaluation demonstrated multifocal nonsuppurative meningoencephalitis with intranuclear eosinophilic and amphophilic inclusion bodies and EHV-9 antigen in neurons...
April 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28424022/analytical-validation-of-an-automated-assay-for-ferric-reducing-ability-of-plasma-in-dog-serum
#14
Camila Peres Rubio, Silvia Martinez-Subiela, Josefa Hernández-Ruiz, Asta Tvarijonaviciute, José Joaquín Ceron
We performed analytical validation of an automated ferric-reducing ability of plasma (FRAP) assay in the serum of dogs. Intra- and interassay precision, accuracy, detection limit, and effects of hemolysis and lipemia were evaluated. Intra- and interassay coefficients of variation were <1% and <13%, respectively. The assay showed a high correlation with a FRAP assay described previously, and results were linear when serial sample dilutions were tested. The detection limit was lower than the values observed in sera from healthy dogs; decreased serum FRAP was found in dogs with leishmaniosis...
April 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28424002/enzyme-linked-immunosorbent-assays-for-coproantigen-detection-of-ancylostoma-caninum-and-toxocara-canis-in-dogs-and-toxocara-cati-in-cats
#15
David A Elsemore, Jinming Geng, Jennifer Cote, Rita Hanna, Araceli Lucio-Forster, Dwight D Bowman
We report the development and field validation of 2 ELISAs for the detection of Ancylostoma caninum or Toxocara canis coproantigens in the feces of dogs with experimental and natural infections, and evidence of cross-reactivity with respective feline counterparts. A. caninum-specific coproantigens were detected in feces of experimentally infected dogs starting at 9 d post-infection (dpi), whereas eggs were not seen until 23 dpi. T. canis-specific coproantigens were detected in 3 of 5 experimentally infected dogs by 31 dpi, and 4 of the 5 animals by 38 dpi...
April 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28423998/preexisting-lesions-associated-with-complete-diaphyseal-fractures-of-the-third-metacarpal-bone-in-12-thoroughbred-racehorses
#16
Sarah N Gray, Mathieu Spriet, Tanya C Garcia, Francisco A Uzal, Susan M Stover
We characterized features of complete diaphyseal fractures of third metacarpal bones in Thoroughbred racehorses. Given that stress fractures are known to occur in the third metacarpal bone, an additional aim was to determine if complete fractures are associated with signs of a preexisting incomplete stress fracture. Bilateral metacarpi from 12 Thoroughbred racehorses euthanized because of complete unilateral metacarpal diaphyseal fracture were examined visually and radiographically. Open, comminuted, transverse or short oblique fractures occurred in the middle of the diaphysis or supracondylar region...
April 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28423989/outbreaks-of-bovine-herpesvirus-2-infections-in-calves-causing-ear-and-facial-skin-lesions
#17
Tatiane Terumi Negrão Watanabe, Robert B Moeller, Beate M Crossley, Patricia C Blanchard
We describe 3 outbreaks of superficial dermatitis caused by bovine herpesvirus 2 (BoHV-2) in dairy breed calves. Clinically, all of the affected calves were 12-26 d of age, had alopecia and crusts on the face and ears, and were non-pruritic and afebrile. Affected animals recovered spontaneously without any treatment within 2-4 wk after onset of clinical signs based on 1 herd with follow up. Histologic examination of all skin crust or tissue samples identified neutrophilic inflammation, mild hyperkeratosis, multinucleate syncytial cells, and intranuclear inclusion bodies in the syncytial cells...
April 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28423988/tumor-collision-of-uterine-adenocarcinoma-and-leiomyosarcoma-in-a-goat
#18
Jenna C Dockweiler, Brieuc Cossic, Sean P McDonough, Susan L Fubini, Kayla M Le, Callum G Donnelly, Robert O Gilbert, Soon Hon Cheong
An aged mixed-breed goat doe was presented with a 9-mo history of serosanguineous vaginal discharge. Vaginal speculum examination revealed serosanguineous discharge but otherwise no abnormalities. Transrectal ultrasonography showed normal ovaries and multifocal cystic lesions within the uterus. Ovariohysterectomy was recommended because of a strong suspicion of neoplasia. Multiple, non-resectable masses were noted in and around the uterus intraoperatively, and euthanasia was elected. Autopsy revealed multiple masses within the uterus, cervix, and lung parenchyma...
April 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28423984/congenital-amelanotic-melanoma-in-a-crossbred-heifer-calf
#19
Christine M Winslow, Jason Wood, John N Gilliam, Melanie A Breshears
A large, pedunculated cutaneous mass protruding from the left flank fold and an enlarged left prefemoral lymph node were found on examination of a 3-d-old crossbred Aberdeen Angus heifer. The calf was asymptomatic aside from peripheral lymphadenopathy, and the mass, along with the left prefemoral lymph node, was surgically excised. Histologic examination of the mass and the lymph node revealed a homogeneous population of neoplastic cells that stained positively with immunohistochemical stains S100 and melan A, supporting a diagnosis of congenital amelanotic melanoma with nodal metastasis...
April 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28382856/postmortem-findings-in-ontario-racehorses-2003-2015
#20
Josepha DeLay
Postmortem lesions and cause of death were evaluated retrospectively for 963 horses examined as part of the Ontario Racing Commission Death Registry over a 13-y period. The Death Registry was established in 2003 to identify factors leading to death or euthanasia of racehorses in this Canadian province. Postmortem examination was carried out on 56% of horses reported to the Death Registry and included Standardbred, Thoroughbred, and American Quarter Horses. Musculoskeletal injury was the most common reason for death associated with racing or training among all racehorses and involved 68% of horses...
April 1, 2017: Journal of Veterinary Diagnostic Investigation
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