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Journal of Veterinary Diagnostic Investigation

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https://www.readbyqxmd.com/read/28068884/evaluation-of-protein-spectra-cluster-analysis-for-streptococcus-spp-identification-from-various-swine-clinical-samples
#1
Carlos E C Matajira, Luisa Z Moreno, Vasco T M Gomes, Ana Paula S Silva, Renan E Mesquita, Daniela S Doto, Franco F Calderaro, Fernando N de Souza, Ana Paula G Christ, Maria Inês Z Sato, Andrea M Moreno
Traditional microbiological methods enable genus-level identification of Streptococcus spp. isolates. However, as the species of this genus show broad phenotypic variation, species-level identification or even differentiation within the genus is difficult. Herein we report the evaluation of protein spectra cluster analysis for the identification of Streptococcus species associated with disease in swine by means of matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). A total of 250 S...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28068881/eu-approved-rapid-tests-might-underestimate-bovine-spongiform-encephalopathy-infection-in-goats
#2
Daniela Meloni, Elena Bozzetta, Jan P M Langeveld, Martin H Groschup, Wilfred Goldmann, Olivier Andrèoletti, Isabelle Lantier, Lucien Van Keulen, Alex Bossers, Danilo Pitardi, Romolo Nonno, Theodoros Sklaviadis, Francesco Ingravalle, Simone Peletto, Silvia Colussi, Pier Luigi Acutis
We report the diagnostic sensitivity of 3 EU-approved rapid tests (ELISAs; 1 from IDEXX and 2 from Bio-Rad) for the detection of transmissible spongiform encephalopathy diseases in goats. Ninety-eight goat brainstem samples were tested. All the rapid tests had 100% specificity and ≥80% sensitivity, with the IDEXX test significantly more sensitive than the 2 Bio-Rad tests. All tests detected 100% of samples from goats with clinical scrapie, but missed 8% (IDEXX) to 33% (Bio-Rad SG) of samples from preclinical goats...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28065163/diagnostic-approach-to-catastrophic-musculoskeletal-injuries-in-racehorses
#3
Santiago S Diab, Susan M Stover, Francisco Carvallo, Akinyi C Nyaoke, Janet Moore, Ashley Hill, Rick Arthur, Francisco A Uzal
Catastrophic musculoskeletal injuries are the most common cause of euthanasia or spontaneous death in racehorses, and the most common cause of jockey falls with potential for serious human injury. Horses are predisposed to the vast majority of these injuries by preexisting lesions that can be prevented by early diagnosis and adequate bone injury management. A thorough examination of the musculoskeletal system in racehorses often determines the cause of these injuries and generates data to develop injury prevention strategies...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28065162/validation-of-a-competitive-elisa-and-a-virus-neutralization-test-for-the-detection-and-confirmation-of-antibodies-to-senecavirus-a-in-swine-sera
#4
Melissa Goolia, Fabio Vannucci, Ming Yang, Devi Patnayak, Shawn Babiuk, Charles K Nfon
Senecavirus A (SVA; family Picornaviridae) is a nonenveloped, single-stranded RNA virus associated with idiopathic vesicular disease (IVD) in swine. SVA was detected in pigs with IVD in Brazil, United States, Canada, and China in 2015, triggering the need to develop and/or validate serologic assays for SVA. Our objective was to fully validate a previously developed competitive enzyme-linked immunosorbent assay (cELISA) as a screening test for antibodies to SVA. Additional objectives included the development and validation of a virus neutralization test (VNT) as a confirmatory test for SVA antibody detection, and the comparison of the cELISA, VNT, and an existing immunofluorescent antibody test (IFAT) for the detection of SVA antibodies in serial bleeds from SVA outbreaks...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28065124/pathologic-and-molecular-characterization-of-histomoniasis-in-peafowl-pavo-cristatus
#5
Lorelei L Clarke, Robert B Beckstead, Jeffrey R Hayes, Daniel R Rissi
Histomonas meleagridis is a flagellate protozoan organism that can cause severe necrotizing typhlitis and hepatitis in gallinaceous birds. Peafowl ( Pavo spp.) have been shown to be susceptible to histomoniasis in experimental settings, but there are few reports of natural histomoniasis in this species. A retrospective study of the archived cases at 2 veterinary diagnostic laboratories in the United States yielded 5 cases of peafowl with gross and histologic findings characteristic of histomoniasis. Lesions included bilateral, transmural fibrinonecrotic typhlitis and multifocal necrotizing hepatitis with associated trophozoites morphologically consistent with H...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28064834/use-of-hyaluronidase-in-the-comparison-between-manual-and-automated-hematology-analysis-with-the-advia-120-to-improve-analysis-of-feline-body-cavity-effusions
#6
Sei Ming Lee, Kenneth Williamson, William Weir, Lisa Hulme-Moir, Hayley Haining
Classification of body cavity effusions is an important step in the investigation and diagnosis of disease in cats. Feline inflammatory effusions are often highly proteinaceous and viscous, which can cause clumping of white cells and subsequently inaccurate nucleated cell counts (NCCs) using automated and manual methods. Microscopic assessment of cellularity can also be difficult given the variable thickness of smears and cell clumping, which skews white cell distribution. The ADVIA 120 uses 2 white cell-counting channels, the basophil/lobularity (WBC/baso) and differential/peroxidase channels, which can provide quite different results in highly viscous feline samples and often disagree with smear assessment of cellularity...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28064563/embryotoxic-effects-of-poincianella-caesalpinia-pyramidalis-leaves-on-pregnant-rats
#7
Antônio Carlos L Câmara, Ivana Cristina N Gadelha, Márcio B Castro, Rosane Maria T Medeiros, Franklin Riet-Correa, Benito Soto-Blanco
We investigated the embryotoxic and fetotoxic effects of Poincianella pyramidalis (Tul.) L.P. Queiroz (syn. Caesalpinia pyramidalis Tul.) leaves on pregnant rats ( Rattus norvegicus). Pregnant rats were divided into 4 groups: G1-fed a ration containing 5% P. pyramidalis leaves beginning on day 1 of pregnancy; G2-fed a ration containing 5% P. pyramidalis leaves commencing on day 6 of pregnancy; G3-fed a ration containing 10% P. pyramidalis leaves starting on day 6 of pregnancy; G4-control group. On day 21 of pregnancy, parameters of reproductive performance were recorded...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28064562/new-interpretive-criteria-for-danofloxacin-antibacterial-susceptibility-testing-against-mannheimia-haemolytica-and-pasteurella-multocida-associated-with-bovine-respiratory-disease
#8
Michael T Sweeney, Mark G Papich, Jeffrey L Watts
Danofloxacin is a fluoroquinolone antibacterial agent approved for use in veterinary medicine to treat and control bovine respiratory disease caused by Mannheimia haemolytica or Pasteurella multocida. Susceptible minimal inhibitory concentration (MIC) breakpoint (≤0.25 µg/mL) and disk diffusion interpretive criteria (≥22 mm) values for danofloxacin against M. haemolytica and P. multocida were first approved by the Clinical and Laboratory Standards Institute (CLSI) in 2003. However, intermediate and resistant breakpoint values were not established because only susceptible wild-type populations were evident at the time of breakpoint approvals...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28061633/mechanisms-of-bone-response-to-injury
#9
Keren E Dittmer, Elwyn C Firth
Bone, despite its relatively inert appearance, is a tissue that is capable of adapting to its environment. Wolff's law, first described in the 19th century, describes the ability of bone to change structure depending on the mechanical forces applied to it. The mechanostat model extended this principle and suggested that the amount of strain a bone detects depends on bone strength and the amount of muscle force applied to the bone. Experimental studies have found that low-magnitude, high-frequency mechanical loading is considered to be the most effective at increasing bone formation...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28061549/fast-and-simple-detection-methods-for-the-4-base-pair-deletion-of-canine-mdr1-abcb1-gene-by-pcr-and-isothermal-amplification
#10
Cathrin P Stiedl, Karin Weber
Dogs with a 4-bp deletion in the MDR1 (or ABCB1) gene show intolerance to certain drugs routinely used in veterinary medicine, such as ivermectin, vincristine, and doxorubicin. The mutation leads to a dysfunctional P-glycoprotein drug transporter, which results in drug accumulation in the brain and severe neurotoxicity. A rapid and accurate in-house test to determine the genotype of patients in cases of acute neurotoxic signs or in tumor patients is desirable. We describe a cost-effective detection method with simple technical equipment for veterinary practice...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/27927911/comparison-of-methodologies-in-determining-bone-marrow-fat-percentage-under-different-environmental-conditions-assessing-a-tool-for-ruminant-welfare-investigations
#11
David Murden, Jaimie Hunnam, Bert De Groef, Grant Rawlin, Christina McCowan
The use of bone marrow fat percentage has been recommended in assessing body condition at the time of death in wild and domestic ruminants, but few studies have looked at the effects of time and exposure on animal bone marrow. We investigated the utility of bone marrow fat extraction as a tool for establishing antemortem body condition in postmortem specimens from sheep and cattle, particularly after exposure to high heat, and compared different techniques of fat extraction for this purpose. Femora were collected from healthy and "skinny" sheep and cattle...
December 6, 2016: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/27927910/validation-of-various-parasite-detection-tests-for-use-in-the-australian-marsupials-quenda-isoodon-obesulus-and-brushtail-possums-trichosurus-vulpecula
#12
Alison E Hillman, Amanda L Ash, Amanda R Kristancic, Aileen D Elliot, Alan J Lymbery, Ian D Robertson, R C Andrew Thompson
We aimed to validate the use of 1) the modified agglutination test and a polymerase chain reaction (PCR) protocol in detecting Toxoplasma gondii infection in quenda (Isoodon obesulus) and brushtail possums (Trichosurus vulpecula); 2) immunofluorescence microscopy of feces and a PCR and sequencing protocol in detecting Giardia spp. infection in quenda; and 3) a fecal flotation protocol in detecting gastrointestinal helminth infections of quenda. Quenda and brushtail possum carcasses, and samples from trapped quenda, were tested with 2 parasite detection tests per parasite, and results were modeled using Bayesian latent class analysis to estimate test sensitivity and specificity...
December 6, 2016: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/27852816/occurrence-of-primary-lymphocytic-hypophysitis-in-two-horses-and-presence-of-scattered-t-lymphocytes-in-the-normal-equine-pituitary-gland
#13
Llorenç Grau-Roma, Robert Peckham, Jacqui Paton, Anina Stahel, Simone de Brot
The postmortem examination of a 14-year-old Appaloosa gelding with clinically diagnosed pituitary pars intermedia dysfunction showed a unique finding of moderate multifocal lymphocytic hypophysitis (LH). The pituitary glands of 24 horses submitted for postmortem examination were examined grossly and examined histologically for the presence of lymphocytes. Of these 23 horses, 1 additional case suffered from moderate LH. The 2 cases with LH tested negative for Equid herpesvirus 1 and 4 by polymerase chain reaction and immunohistochemistry (IHC), and no viral particles were observed by electron microscopy in 1 case examined...
November 15, 2016: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/27852815/alcohol-based-solutions-for-bovine-testicular-tissue-fixation
#14
Nelson C Cabrera, Jorge R Espinoza, Paul Vargas-Jentzsch, Patricio Sandoval, Luis A Ramos, Pedro M Aponte
Tissue fixation, a central element in histotechnology, is currently performed with chemical compounds potentially harmful for human health and the environment. Therefore, alternative fixatives are being developed, including alcohol-based solutions. We evaluated several ethanol-based mixtures with additives to study fixative penetration rate, tissue volume changes, and morphologic effects in the bovine testis. Fixatives used were Bouin solution, 4% formaldehyde (F4), 70% ethanol (E70), E70 with 1.5% glycerol (E70G), E70 with 5% acetic acid (E70A), E70 with 1...
November 15, 2016: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/27852814/spontaneous-proliferative-and-neoplastic-lesions-in-thyroid-and-parathyroid-glands-of-nondomestic-felids
#15
Jenny P Pope, James Steeil, Edward C Ramsay, Danielle Reel, Shelley J Newman
Based on microscopic and immunohistochemical characterization, we documented spontaneous proliferative and neoplastic lesions in the thyroid and parathyroid glands of nondomestic felids. Ten animals (4 leopards, 3 tigers, and 3 cougars), all with a previous diagnosis of thyroid neoplasia were identified from the University of Tennessee College of Veterinary Medicine database. The mean age of affected animals was 15.9 y. Twelve neoplasms were identified; 2 animals had 2 concurrent neoplasms. After immunohistochemical characterization using a panel of chromogranin A, thyroglobulin, and calcitonin, 7 of the former thyroid neoplasms were diagnosed as thyroid adenomas, 1 was diagnosed as a thyroid carcinoma, and 4 were diagnosed as parathyroid adenomas...
November 15, 2016: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/27852813/initial-development-and-preliminary-evaluation-of-a-multiplex-bead-assay-to-detect-antibodies-to-ehrlichia-canis-anaplasma-platys-and-ehrlichia-chaffeensis-outer-membrane-peptides-in-naturally-infected-dogs-from-grenada-west-indies
#16
Melinda J Wilkerson, Kelley E Black, Marta Lanza-Perea, Bhumika Sharma, Kathryn Gibson, Diana M Stone, Anushka George, Arathy D S Nair, Roman R Ganta
Tick-borne bacteria, Ehrlichia canis, Anaplasma platys, and Ehrlichia chaffeensis are significant pathogens of dogs worldwide, and coinfections of E. canis and A. platys are common in dogs on the Caribbean islands. We developed and evaluated the performance of a multiplex bead-based assay to detect antibodies to E. canis, A. platys, and E. chaffeensis peptides in dogs from Grenada, West Indies, where E. canis and A. platys infections are endemic. Peptides from outer membrane proteins of P30 of E. canis, OMP-1X of A...
November 15, 2016: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/27852812/a-retrospective-study-of-the-prevalence-of-calcium-oxalate-crystals-in-veterinary-aspergillus-cases
#17
Courtney L Payne, Michael J Dark, Julia A Conway, Lisa L Farina
Fungi in the genus Aspergillus are some of the most common fungal pathogens in veterinary species, primarily affecting the respiratory tract. In both human and veterinary cases, calcium oxalate crystals have been documented in sites of Aspergillus infection. Cases in multiple species (16 birds, 15 horses, 5 dogs, 1 ox, and 1 dolphin) were identified that had either positive cultures for Aspergillus sp., or had conidiophores present that could be identified as belonging to the genus Aspergillus Histologic slides were examined to confirm the presence of oxalate crystals and how often they were identified on the original report...
November 15, 2016: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/27852811/adrenal-function-in-cats-with-cholestatic-liver-disease
#18
Faith I Buckley, Orla Mahony, Cynthia R L Webster
Cats with cholestatic liver disease experience significant morbidity and mortality when they undergo invasive procedures under anesthesia. Although inadequate adrenal response might account for these outcomes, adrenal function in cats with cholestatic liver disease has not been documented, to our knowledge. The goal of our study was to describe adrenal function in these cats. Twenty-seven cats with a serum bilirubin >230 µmol/L (3 mg/dL) and serum alanine aminotransferase >2 times the upper limit of normal had pre- and 60-min post-adrenocorticotropic hormone (ACTH) cortisol analysis after administration of 5 µg/kg cosyntropin intravenously...
November 15, 2016: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28074717/endosulfan-poisoning-in-canids-and-felids-in-the-calabria-region-of-southern-italy
#19
Antonella De Roma, Carmela Rossini, Caterina Riverso, Giorgio Galiero, Mauro Esposito
Endosulfan, a highly toxic insecticide and acaricide, was globally banned under the Stockholm Convention in May 2011 because of its threats to human health and the environment. Despite the ban on its use, endosulfan is still present in the environment, causing poisoning events in domestic animals and wildlife. Toxicologic analysis of poisoned animals conducted by the Istituto Zooprofilattico Sperimentale del Mezzogiorno revealed that in the past 3 y, this pesticide has not disappeared in the regions of interest...
January 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28074716/semiquantitative-immunohistochemical-detection-of-progesterone-receptors-in-male-accessory-sex-glands-as-a-screening-assay-for-anabolic-steroid-use-in-bulls
#20
Claudia Zanardello, Katia Capello, Roberto Stella, Giancarlo Biancotto, Marta Vascellari
We investigated the immunohistochemical expression of progesterone receptors (PRs) in the prostate and bulbourethral glands of thirty-two 10-14-mo-old Charolais bulls following treatment with a low dosage of estrogens. Animals were divided into 2 groups: 16 animals (group T) were treated for 71 d with a therapeutic dose of trenbolone acetate and estradiol by subcutaneous implant, 16 animals (group C) received no treatment. Urine samples were collected both at the beginning of the trial and 9 times during the study...
January 2017: Journal of Veterinary Diagnostic Investigation
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