Fatal Chlamydia psittaci infection in a domestic kitten     

Hailey Sanderson  Marce Vasquez  Hally Killion  Madison Vance  Kerry Sondgeroth  Jonathan Fox 《Journal of veterinary diagnostic investigation》2021,33(1):101

Chlamydia psittaci has not been reported to cause disease in domestic cats, to our knowledge. In contrast, C. felis infection is common in domestic cats and typically results in conjunctivitis, upper respiratory tract infection, and less frequently pneumonia. Herein, we report the pathologic findings and diagnostic features of a fatal case of psittacosis in a 7-wk-old domestic kitten. The animal was 1 of a litter of 5 that, together with the queen, were yielded to a pet rescue center in Wyoming. Over a period of ~3 wk, the kittens and queen became sick, thin, and icteric prior to death, despite antimicrobial treatments. Postmortem evaluation of a kitten revealed necrosuppurative hepatitis with Gimenez stain–positive intracellular bacteria, nonsuppurative pneumonia, and mild leptomeningitis. The diagnosis of psittacosis was made by 16S rRNA PCR using multiple primer sets and sequencing from liver. Psittacosis should be considered a differential diagnosis in domestic cats with intracellular bacterial hepatitis and interstitial pneumonia.  相似文献   

Randomly primed,strand-switching,MinION-based sequencing for the detection and characterization of cultured RNA viruses     

Kelsey T. Young  Kevin K. Lahmers  Holly S. Sellers  David E. Stallknecht  Rebecca L. Poulson  Jerry T. Saliki  Stephen Mark Tompkins  Ian Padykula  Chris Siepker  Elizabeth W. Howerth  Michelle Todd  James B. Stanton 《Journal of veterinary diagnostic investigation》2021,33(2):202

RNA viruses rapidly mutate, which can result in increased virulence, increased escape from vaccine protection, and false-negative detection results. Targeted detection methods have a limited ability to detect unknown viruses and often provide insufficient data to detect coinfections or identify antigenic variants. Random, deep sequencing is a method that can more fully detect and characterize RNA viruses and is often coupled with molecular techniques or culture methods for viral enrichment. We tested viral culture coupled with third-generation sequencing for the ability to detect and characterize RNA viruses. Cultures of bovine viral diarrhea virus, canine distemper virus (CDV), epizootic hemorrhagic disease virus, infectious bronchitis virus, 2 influenza A viruses, and porcine respiratory and reproductive syndrome virus were sequenced on the MinION platform using a random, reverse primer in a strand-switching reaction, coupled with PCR-based barcoding. Reads were taxonomically classified and used for reference-based sequence building using a stock personal computer. This method accurately detected and identified complete coding sequence genomes with a minimum of 20× coverage depth for all 7 viruses, including a sample containing 2 viruses. Each lineage-typing region had at least 26× coverage depth for all viruses. Furthermore, analyzing the CDV sample through a pipeline devoid of CDV reference sequences modeled the ability of this protocol to detect unknown viruses. Our results show the ability of this technique to detect and characterize dsRNA, negative- and positive-sense ssRNA, and nonsegmented and segmented RNA viruses.  相似文献   

Socio-spatial organization reveals paternity and low kinship in the Honduran white bat (Ectophylla alba) in Costa Rica     

Edgar G. GUTIÉRREZ  Isabela VIVAS-TORO  Daniela CARMONA-RUÍZ  David VILLALOBOS-CHAVES  Bernal RODRÍGUEZ-HERRERA  Melina Del REAL-MONROY  Gloria LEÓN-AVILA  Jorge ORTEGA 《Integrative zoology》2021,16(5):646-658

Ectophylla alba is a tent-making bat that roosts in mixed-sex clusters comprising adults and offspring. Our goal was to determine the genetic identity of individuals belonging to different roosting groups. We tested the hypothesis of kin selection as a major force structuring group composition. We used 9 microsatellites designed for E. alba to determine the genetic identity and probability of parentage of individuals. We analyzed parentage and kinship using the software ML-Relate, GenAIEx, and Cervus. The obtained relationship probabilities (0.5) revealed a clear maternal relationship between female adults and offspring with allele compatibility, and at least 5 relationships between male adults and pups. We found a low degree of relatedness within roosting groups. Between roosting groups at different sites, the mean probability of a half-sibling relationship ranged from 0.214 to 0.244 and, for full-sibling relationship, from 0.383 to 0.553. Genetically, adult individuals were poorly related within clusters, and kinship as an evolutionary force could not explain group membership.  相似文献   

Effects of Annealing and Concentration of Calcium Salts on Thermal and Rheological Properties of Maize Starch During an Ecological Nixtamalization Process     

David Santiago‐Ramos  Juan de Dios Figueroa‐Crdenas  Jos Juan Vles‐Medina  Rosalía Reynoso‐Camacho  Minerva Ramos‐Gmez  Marcela Gaytn‐Martínez  Eduardo Morales‐Snchez 《Cereal Chemistry》2015,92(5):475-480

The objective of the present work was to study the effect of annealing and concentration of Ca(OH)₂ (lime) and calcium salts on the thermal and rheological properties of maize starch during an ecological nixtamalization process. Thermal and rheological properties of maize starch changed during the ecological nixtamalization process because of three main causes: the annealing phenomenon, type of calcium salt, and calcium salt concentration. In all treatments thermal properties (T_o, T_p, and T_f) of nixtamal starch increased owing to the annealing process, whereas the type of salt or lime increased thermal properties and decreased pasting properties in this order: CaCl₂ > CaSO₄ > Ca(OH)₂ ≈ CaCO₃. This behavior was because of the dissociation of each salt or lime in water. Anions (OH⁻) can penetrate much more easily into the starch granule and start the gelatinization process by rupturing hydrogen bonds. Additionally, amylose‐lipid complexes were formed during the nixtamalization processes, as indicated by an increasing peak at 4.5 Å in X‐ray diffraction patterns.  相似文献   

IMAGING DIAGNOSIS—MULTIMODALITY FINDINGS IN AN ADULT DOG WITH PRIMARY SARCOMA OF THE PULMONARY ARTERY AND MYOCARDIAL METASTASES          下载免费PDF全文

Susanne M. Stieger‐Vanegas  Bryan Bottorff  David Sisson  Christiane V. Löhr 《Veterinary radiology & ultrasound》2016,57(4):E34-E41

Intravascular pulmonary artery sarcomas in combination with myocardial metastasis are rare in dogs. We describe the radiographic, echocardiographic, and electrocardiographic‐gated (ECG‐gated) computed tomographic angiography (CTA) findings in a dog with pulmonary artery sarcoma. All imaging studies demonstrated severe main pulmonary artery enlargement. Echocardiography and ECG‐gated CTA revealed a mass occluding the lumen of the right pulmonary artery. In addition, CTA revealed focal left ventricular myocardial contrast enhancement and parenchymal lung changes. Postmortem examination confirmed the presence of a large thrombus associated with arteriosclerosis and an intravascular sarcoma in the right pulmonary artery with metastases to the myocardium, lungs and brain.  相似文献   

INVITED REVIEW—IMAGE REGISTRATION IN VETERINARY RADIATION ONCOLOGY: INDICATIONS,IMPLICATIONS, AND FUTURE ADVANCES          下载免费PDF全文

Yang Feng  Jessica Lawrence  Kun Cheng  Dean Montgomery  Lisa Forrest  Duncan B. Mclaren  Stephen McLaughlin  David J. Argyle  William H. Nailon 《Veterinary radiology & ultrasound》2016,57(2):113-123

The field of veterinary radiation therapy (RT) has gained substantial momentum in recent decades with significant advances in conformal treatment planning, image‐guided radiation therapy (IGRT), and intensity‐modulated (IMRT) techniques. At the root of these advancements lie improvements in tumor imaging, image alignment (registration), target volume delineation, and identification of critical structures. Image registration has been widely used to combine information from multimodality images such as computerized tomography (CT), magnetic resonance imaging (MRI), and positron emission tomography (PET) to improve the accuracy of radiation delivery and reliably identify tumor‐bearing areas. Many different techniques have been applied in image registration. This review provides an overview of medical image registration in RT and its applications in veterinary oncology. A summary of the most commonly used approaches in human and veterinary medicine is presented along with their current use in IGRT and adaptive radiation therapy (ART). It is important to realize that registration does not guarantee that target volumes, such as the gross tumor volume (GTV), are correctly identified on the image being registered, as limitations unique to registration algorithms exist. Research involving novel registration frameworks for automatic segmentation of tumor volumes is ongoing and comparative oncology programs offer a unique opportunity to test the efficacy of proposed algorithms.  相似文献   

A SURVEY OF RADIOLOGISTS AND REFERRING VETERINARIANS REGARDING IMAGING REPORTS          下载免费PDF全文

Andrea Weissman  Mauricio Solano  Olivier Taeymans  Shannon P. Holmes  David Jiménez  Bruce Barton 《Veterinary radiology & ultrasound》2016,57(2):124-129

An imaging report is a vital communication tool between a radiologist and clinician. In a field where in‐person communication may not be readily available, it is imperative that the report clearly relays pertinent clinical information in a timely manner. The purpose of this observational study was to describe and compare opinions and expectations of small animal general practitioners, veterinary specialists, and veterinary radiologists regarding the imaging report. Online surveys were distributed, and data were collected from 202 veterinary clinicians and 123 veterinary radiologists. The majority (89%) of clinicians were satisfied with their imaging reports and stated that they read the radiology report as soon as it was available (92%). Just less than half (48%) of clinicians indicated it was standard of care that a board‐certified veterinary radiologist read all imaging studies. Radiologists and clinicians agreed that a clinical history (98% and 94%, respectively) and clinical question (82% and 68%, respectively) were needed to generate a good radiology report. Fifty‐five percent to 70% of clinicians prefer red bulleted reports, which included incidental findings (96%); while radiologists slightly favored prose reporting (37–46%). Clinicians found it helpful when additional imaging (86%), medical (71%), and surgical recommendations (73%) were made. About one‐third of specialists who had been in practice for >11 years thought they were better able to interpret imaging for their own specialty than the radiologist. Clinicians voiced discontentment with reports that were not completed in a timely manner or did not give a prioritized differential list. Further studies are warranted to provide a more in‐depth evaluation of veterinary radiology reporting structure and style.  相似文献   

Continuous positive airway pressure (CPAP) decreases pulmonary shunt in anaesthetized horses          下载免费PDF全文

Martina Mosing  Paul MacFarlane  David Bardell  Laura Lüthi  Peter J. Cripps  Regula Bettschart‐Wolfensberger 《Veterinary anaesthesia and analgesia》2016,43(6):611-622

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Best practice recommendations for prehospital veterinary care of dogs and cats          下载免费PDF全文

Rita M. Hanel DVM  DACVIM  DACVECC  Lee Palmer DVM  MS  DACVECC  NREMT‐T  WEMT  CCRP  Janice Baker DVM  DACVPM  Jo‐Anne Brenner BA  EMT‐I  EMT‐T  David Dorman DVM  PhD  DABVT  John C. Gicking DVM  DACVECC  Brian Gilger DVM  MS  DACVO  DABT  Cynthia M. Otto DVM  PhD  DACVECC  DACVSMR  Elizabeth Rozanski DVM  DACVECC  DACVIM  Brian Trumpatori DVM 《Journal of Veterinary Emergency and Critical Care》2016,26(2):166-233

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Clinical and histologic description of ocular anatomy in captive black‐tailed prairie dogs (Cynomys ludovicianus)          下载免费PDF全文

Jessica M. Meekins  David Eshar  Amy J. Rankin  Jamie N. Henningson 《Veterinary ophthalmology》2016,19(2):110-116

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