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Journal of Veterinary Diagnostic Investigation

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https://www.readbyqxmd.com/read/28205490/diagnosing-feline-infectious-peritonitis-using-the-sysmex-xt-2000iv-based-on-frozen-supernatants-from-cavitary-effusions
#1
Angelica Stranieri, Saverio Paltrinieri, Alessia Giordano
The delta total nucleated cells (ΔTNC) measurement with the Sysmex XT-2000iV (Sysmex Europe, Norderstedt, Germany) has high diagnostic accuracy on effusions in feline infectious peritonitis (FIP) cases, but the test can be performed only on fresh samples. We evaluated whether supernatants from effusions retain the ability to induce cell clumping and assessed the diagnostic accuracy of this modified ΔTNC method. Effusions were collected from FIP cats ( n = 19) and from cats with other diseases ( n = 15). ΔTNC was measured on fresh samples and on frozen-thawed supernatants after the addition of feline blood at 1:10 dilution...
February 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28205462/atypical-chronic-myeloid-leukemia-in-a-german-shepherd-dog
#2
Christina L Marino, Jimmy N S N Tran, Tracy Stokol
A 4-y-old neutered male German Shepherd Dog was presented with a 3-d duration of lethargy, restlessness, and vomiting. Physical examination revealed generalized lymphadenopathy, pale mucous membranes, systolic heart murmur, dehydration, and fever. Hematologic abnormalities included moderate-to-marked leukocytosis, characterized by neutrophilia with a left shift to progranulocytes and 2% presumptive myeloid blasts, marked anemia that was nonregenerative, and marked thrombocytopenia. Dysplasia was evident in neutrophils and platelets...
February 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28205458/nomenclature-classification-and-documentation-of-catastrophic-fractures-and-associated-preexisting-injuries-in-racehorses
#3
Susan M Stover
Racehorses are susceptible to bone fractures when damage from repetitive, high-magnitude loads incurred during training and racing exceed concurrent damage removal and replacement, resulting in transient periods of focal osteoporosis and bone weakening. Clinically, these events correspond to cortical stress fractures and subchondral bone stress remodeling. Evidence of these preexisting lesions include periosteal callus, endosteal callus, and intracortical focal hyperemia for cortical stress fractures; and subchondral focal hyperemia located superficial to sclerotic compacted trabecular bone tissue for subchondral stress remodeling...
February 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28205457/amoebic-gill-disease-outbreak-in-marine-fish-cultured-in-korea
#4
Wi-Sik Kim, Kyoung-Hui Kong, Jong-Oh Kim, Sung-Ju Jung, Jeong-Ho Kim, Myung-Joo Oh
In 2015, 6.7-60% mortality was observed in black seabream ( Acanthopagrus schlegelii), rock bream ( Oplegnathus fasciatus), and gray mullet ( Mugil cephalus) farmed in the southern coast of Korea. On examination, numerous amoebae were found on the gills of these 3 fish species with detection rate of 100%. Some rock bream and gray mullet were coinfected with bacteria ( Pseudomonas anguilliseptica, Vibrio tapetis, or Vibrio anguillarum). Histologic examination revealed extensive hyperplastic epithelium and lamellar fusion in the gills...
February 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28205456/histochemical-study-of-encephalitozoon-cuniculi-spores-in-the-kidneys-of-naturally-infected-new-zealand-rabbits
#5
Luis E Rodríguez-Tovar, Alejandra Villarreal-Marroquín, Alicia M Nevárez-Garza, Uziel Castillo-Velázquez, Heidi G Rodríguez-Ramírez, Magda C Navarro-Soto, Juan J Zárate-Ramos, Gustavo Hernández-Vidal, Armando Trejo-Chávez
Encephalitozoon cuniculi is an important microsporidian pathogen that is considered an emergent, zoonotic, and opportunistic. It infects both domestic and laboratory rabbits, generating severe chronic interstitial and granulomatous nephritis with fibrosis and granulomatous encephalitis. Encephalitozoonosis is diagnosed in paraffin-embedded sections by examining the spores in the host tissues. The spores are difficult to observe when the samples are stained with hematoxylin and eosin (H&E), particularly when there is an inflammatory reaction and tissue damage...
February 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28178907/investigation-of-agid-and-two-commercial-elisas-for-the-detection-of-bovine-viral-diarrhea-virus-specific-antibodies-in-sheep-serum
#6
Caitlin A Evans, Sasha R Lanyon, Michael P Reichel
Effective control and the eventual eradication of Bovine viral diarrhea virus (BVDV) from cattle populations depend on the accurate identification of infected animals. Although typically a disease agent of cattle, BVDV is known to infect a wide variety of nonbovine species, including sheep. However, validation of serologic tests in these nonbovine species, particularly sheep, is lacking. We analyzed 99 sheep sera (57 samples from Pestivirus-naive sheep, and 42 samples from BVDV-inoculated sheep) in order to investigate 3 serologic tests: the agarose gel immunodiffusion (AGID) and 2 commercial enzyme-linked immunosorbent assays (ELISAs) for detection of BVDV antibodies...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28176615/identification-by-next-generation-sequencing-of-aichivirus-b-in-a-calf-with-enterocolitis-and-neurologic-signs
#7
Ana S D Moreira, Sarah M Raabis, Melissa E Graham, Jennifer M Dreyfus, Samuel D Sibley, Jennifer A Godhardt-Cooper, Kathy L Toohey-Kurth, Tony L Goldberg, Simon F Peek
An 11-d-old Holstein bull calf was presented to the Veterinary Medical Teaching Hospital at the University of Wisconsin-Madison because of a 4-d history of diarrhea and persistent low-grade fever. Initial diagnosis was enteritis caused by Cryptosporidium and rotavirus. During hospitalization, the calf became stuporous and was only responsive to noxious stimuli, with hypotonia of all 4 limbs, tail, head, and neck. A cerebrospinal fluid analysis revealed xanthochromia, with marked lymphocytic pleocytosis, which was suggestive of viral meningitis and/or encephalitis...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28176614/acanthomatous-ameloblastoma-with-atypical-foci-in-five-dogs
#8
Jennifer L Malmberg, Elizabeth W Howerth, Barb E Powers, Paula A Schaffer
Acanthomatous ameloblastoma is a common, locally invasive, nonmetastasizing tumor of the canine oral cavity. The long-term prognosis for canine acanthomatous ameloblastoma is good if complete excision can be achieved, usually by maxillectomy or mandibulectomy. A variant of acanthomatous ameloblastoma with atypical foci was noted in 5 dogs. There was no age, breed, or sex predisposition. Atypical cells were pleomorphic with a high mitotic rate. They were immunohistochemically negative for cytokeratin, vimentin, melan A, PNL2, CD3, Pax5, CD18, chromogranin A, and synaptophysin...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28176612/comparison-of-the-sysmex-xt-2000iv-with-microscopic-differential-counts-of-canine-bone-marrow
#9
Iris Pernecker, Natali B Bauer, Sigrid Johannes, Melanie Ginder, Johannes H Harleman, Andreas Moritz
Canine bone marrow is frequently assessed in the advanced preclinical research environment. Automated analysis provides time savings and objectivity over the gold standard of microscopic (cytologic) evaluation. We compared the analysis of 90 canine bone marrow samples by the Sysmex XT-2000iV hematology analyzer (Sysmex Corp., Kobe, Japan) with cytologic evaluation. Gates for cell populations were created in the system's WBC/BASO channel. Variables "total nucleated red blood cells" (total_NRBC), "poly- and orthochromatic nucleated red blood cells" (poly_orth_NRBC), "total neutrophils" (total_NEUT), "mature neutrophils" (mature_NEUT), and myeloid-to-erythroid (M:E) ratio were compared with cytologic evaluation...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28176611/development-and-validation-of-a-real-time-pcr-assay-for-the-detection-of-toxoplasma-gondii-dna-in-animal-and-meat-samples
#10
Anna Maria Fausta Marino, Maurizio Percipalle, Renato Paolo Giunta, Antonio Salvaggio, Giulia Caracappa, Tiziana Alfonzetti, Alessandra Aparo, Stefano Reale
We report a rapid and reliable method for the detection of Toxoplasma gondii in meat and animal tissues based on real-time polymerase chain reaction (PCR). Samples were collected from cattle, small ruminants, horses, and pigs raised or imported into Sicily, Italy. All DNA preparations were assayed by real-time PCR tests targeted to a 98-bp long fragment in the AF 529-bp repeat element and to the B1 gene using specific primers. Diagnostic sensitivity (100%), diagnostic specificity (100%), limit of detection (0...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28176609/outbreak-of-highly-pathogenic-avian-influenza-in-minnesota-in-2015
#11
Ann Fitzpatrick, Sunil K Mor, Mary Thurn, Elizabeth Wiedenman, Tracy Otterson, Robert E Porter, Devi P Patnayak, Dale C Lauer, Shauna Voss, Stephanie Rossow, James E Collins, Sagar M Goyal
The incursion of highly pathogenic avian influenza (HPAI) into the United States during 2014 resulted in an unprecedented foreign animal disease (FAD) event; 232 outbreaks were reported from 21 states. The disease affected 49.6 million birds and resulted in economic losses of $950 million. Minnesota is the largest turkey-producing state, accounting for 18% of U.S. turkey production. Areas with concentrated numbers of turkeys in Minnesota were the epicenter of the outbreak. The first case was presumptively diagnosed in the last week of February 2015 at the Minnesota Veterinary Diagnostic Laboratory (MVDL) and confirmed as HPAI H5N2 at the National Veterinary Services Laboratories on March 4, 2015...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28176608/validation-of-commercial-elisas-for-quantifying-anabolic-growth-factors-and-cytokines-in-canine-acd-a-anticoagulated-plasma
#12
Kate Birdwhistell, Robert Basinger, Brian Hayes, Natalie Norton, David J Hurley, Samuel P Franklin
Platelet-rich plasma has been studied extensively in dogs, but validation of enzyme-linked immunosorbent assays (ELISAs) for quantifying anabolic growth factors and inflammatory cytokines in canine plasma prepared with citrate-based anticoagulants is not available. We performed a validation of commercial ELISAs for transforming growth factor-beta 1 (TGF-β1), platelet-derived growth factor-BB (PDGF-BB), vascular endothelial growth factor (VEGF), tumor necrosis factor-alpha (TNF-α), and interleukin-1 beta (IL-1β) for use with canine plasma prepared with acid-citrate-dextrose, solution A (ACD-A)...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28176607/factors-affecting-the-gamma-interferon-test-in-the-detection-of-bovine-tuberculosis-in-cattle
#13
Geoffrey W de Lisle, Richard S Green, Bryce M Buddle
The gamma interferon (IFN-γ) test has been used for many years as an ancillary test in the detection of bovine tuberculosis. We investigated the effect of skin testing and the length of time between blood collection and processing on the performance of the IFN-γ test. A series of blood samples were taken from groups of experimentally infected cattle ( n = 10), naturally infected ( n = 11), and uninfected animals ( n = 12) that were examined with a caudal fold skin test. Blood was taken on the day of tuberculin injection, 3 d later when the skin tests were read, and 11-19 d post-tuberculin injection, and was processed for the IFN-γ test at 8, 30, and 36 h postcollection...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28166712/experimental-acute-infection-of-alpacas-with-bovine-viral-diarrhea-virus-1-subgenotype-b-alters-peripheral-blood-and-galt-leukocyte-subsets
#14
Christina L Topliff, Abdulrahman A Alkheraif, Charles A Kuszynski, William C Davis, David J Steffen, Jack A Schmitz, Kent M Eskridge, Bryan Charleston, Jamie N Henningson, Clayton L Kelling
Bovine viral diarrhea virus (BVDV) is a pathogen in cattle and alpacas ( Vicugna pacos), causing acute and persistent BVDV infections. We characterized the effect of acute BVDV infection on the immune system of alpacas by determining lymphocyte subpopulations in peripheral blood and gut-associated lymphoid tissues (GALT) as well as serum interferon levels. Alpacas were experimentally infected with BVDV-1b (strain CO-06). Peripheral blood leukocytes were isolated at 0, 3, 6, and 9 d postinfection (dpi), and leukocytes of GALT at 9 dpi, and evaluated using flow cytometry...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28166696/development-and-validation-of-a-quantitative-pcr-for-rapid-and-specific-detection-of-california-sea-lion-adenovirus-1-and-prevalence-in-wild-and-managed-populations
#15
Galaxia Cortés-Hinojosa, Frances M D Gulland, Tracey Goldstein, Stephanie Venn-Watson, Rebecca Rivera, Linda L Archer, Thomas B Waltzek, Gregory C Gray, James F X Wellehan
California sea lion adenovirus 1 (CSLAdV-1) has been associated with hepatitis and enteritis in several wild and captive populations of diverse pinniped species. Currently available tests have been limited to pan-adenoviral polymerase chain reaction (PCR) followed by sequencing. We present the development of a quantitative probe-hybridization PCR (qPCR) assay for rapid, sensitive, and specific detection of this virus in California sea lions ( Zalophus californianus) and other pinnipeds. This assay did not amplify other mammalian adenoviruses and is able to detect consistently down to 10 viral copies per well...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28166691/rhombencephalitis-caused-by-listeria-monocytogenes-in-a-pastured-bull
#16
Carolina Matto, Gustavo Varela, María Inés Mota, Ruben Gianneechini, Rodolfo Rivero
A pastured 2-y-old cross-breed bull developed brainstem encephalitis (rhombencephalitis); Listeria monocytogenes was isolated from the brain. In the brainstem, there was perivascular cuffing, multiple microabscesses, and positive immunostaining for L. monocytogenes. Samples of bovine feces, water, feedstuffs, milking parlor soil, and bulk tank milk were collected from the dairy farm. Seven isolates of the genus Listeria were obtained, 6 of L. innocua and 1 of L. monocytogenes, which was found in the pasture where the bull grazed...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28114867/cecal-infarction-in-neonatal-calves
#17
John M Adaska, Robert B Moeller, Patricia C Blanchard, Sharif S Aly
Cecal infarction is an uncommon lesion in calves that results in localized peritonitis and, on occasion, perforation with secondary diffuse peritonitis and death. This lesion in calves has not been described previously. We reviewed the postmortem cases of cecal infarction in dairy calves ≤30 d of age that had been submitted over the course of 5 y to the Tulare branch of the California Animal Health and Food Safety Laboratory System. The area of cecal infarction and the associated lesion margins were examined histologically...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28114865/sudden-death-in-racehorses
#18
Santiago S Diab, Robert Poppenga, Francisco A Uzal
In racehorses, sudden death (SD) associated with exercise poses a serious risk to jockeys and adversely affects racehorse welfare and the public perception of horse racing. In a majority of cases of exercise-associated sudden death (EASD), there are no gross lesions to explain the cause of death, and an examination of the cardiovascular system and a toxicologic screen are warranted. Cases of EASD without gross lesions are often presumed to be sudden cardiac deaths (SCD). We describe an equine SD autopsy protocol, with emphasis on histologic examination of the heart ("cardiac histology protocol") and a description of the toxicologic screen performed in racehorses in California...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28114861/detection-of-classical-swine-fever-virus-infection-by-individual-oral-fluid-of-pigs-following-experimental-inoculation
#19
Stefano Petrini, Ilaria Pierini, Monica Giammarioli, Francesco Feliziani, Gian Mario De Mia
We evaluated the use of oral fluid as an alternative to serum samples for Classical swine fever virus (CSFV) detection. Individual oral fluid and serum samples were collected at different times post-infection from pigs that were experimentally inoculated with CSFV Alfort 187 strain. We found no evidence of CSFV neutralizing antibodies in swine oral fluid samples under our experimental conditions. In contrast, real-time reverse transcription-polymerase chain reaction could detect CSFV nucleic acid from the oral fluid as early as 8 d postinfection, which also coincided with the time of initial detection in blood samples...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28114859/eosinophilic-leukemia-in-three-african-pygmy-hedgehogs-atelerix-albiventris-and-validation-of-luna-stain
#20
David Martínez-Jiménez, Bridget Garner, Sheryl Coutermarsh-Ott, Caitlin Burrell, Sabrina Clark, Mary Nabity, Josué Díaz-Delgado, Aline Rodrigues-Hoffmann, Karen Zaks, Laila Proença, Stephen Divers, Corey Saba, Paola Cazzini
Neoplasia is usually encountered in the African pygmy hedgehog at a mean age of 3.5 y, and malignancy is common. Myelogenous leukemias are rarely reported in hedgehogs. We describe 3 cases of eosinophilic leukemia in adult, middle-aged (mean age: 2.3 y) hedgehogs, for which prognosis appears grave. In 1 case, attempted treatment was unsuccessful, and in all 3 cases, the disease course was rapid and all died soon after diagnosis. Blood smear evaluation, along with complete blood count, was critical in making the diagnosis in all cases...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
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