Plasma D‐Dimer Concentrations during Experimental EHV‐1 Infection of Horses     

L.S. Goehring  G. Soboll Hussey  M. Gomez Diez  K. Benedict  L.K. Maxwell  P.S. Morley  M.M. Sloet van Oldruitenborgh‐Oosterbaan  D.P. Lunn 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2013,27(6):1535-1542

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A new species of Rosenscheldia (Dothideomycetes) from Brazil     

Fbio A. Custdio  Andr L. Firmino  Olinto L. Pereira 《Forest Pathology》2019,49(1)

A fungus forming black stromata with several immersed ascomata was found associated with living branches of Protium warmingianum (Burseraceae) in the Mata da Biologia, city of Viçosa, Minas Gerais, Brazil. The new species differs from all five species found on literature and is fully described, illustrated and compared with the other species described in the genus. This is the first species of Rosenscheldia found on burseraceae hosts in Brazil and the first species on the host genus Protium.  相似文献   

Diplodia sapinea found on Scots pine in Finland     

Michael M. Müller  Jarkko Hantula  Michael Wingfield  Rein Drenkhan 《Forest Pathology》2019,49(1)

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斑点叉尾鮰暴发性出血溃疡症的病理学研究     

冯杨  段靖  黄小丽  汪开毓  邓永强  耿毅  欧阳萍  陈德芳 《华南农业大学学报》2019,40(1):65-71

【目的】探究两起斑点叉尾鮰Ietalurus punetaus暴发性体表出血溃疡症的发病病因和病理特征。【方法】利用湿片法对鳃组织和体表黏液进行压片,观察寄生虫寄生情况。从发病鱼的肝脏、脾脏和肾脏中分离病原菌,检测细菌感染情况;利用PCR法检测患病斑点叉尾鮰的肝、脾、肾混合组织匀浆中斑点叉尾鮰病毒(Channel catfish virus,CCV)的携带情况。运用组织病理学方法观察病鱼的病理损伤特点,综合分析并推测该病的致病原因。【结果】该出血溃疡症的靶器官主要为脾脏、肾脏、肝胰脏、肠道以及皮肤肌肉。主要表现为严重的血管反应,实质细胞可见肿胀、变性、坏死;而胃、脑和心脏病变较轻,仅有轻微的炎症;鳃丝、眼球和鳔等未见明显病变。所有的患病个体均出现中度至重度出血性坏死性脾炎、中度肾炎、轻度至中度坏死性肝胰腺炎和肠炎。患病斑点叉尾鮰体内未检测到寄生虫、细菌以及CCV。【结论】综合病理学、细菌学和病毒学检测结果,推测此次斑点叉尾鮰暴发性疾病由某种非CCV的病毒感染所致,温度应激可能是引发该病的条件诱因。  相似文献   

Pathological studies of cheek teeth apical infections in the horse: 4. Aetiopathological findings in 41 apically infected mandibular cheek teeth   总被引：5，自引：5，他引：0  

I.T. Dacre  S. Kempson  P.M. Dixon   《Veterinary journal (London, England : 1997)》2008,178(3):341

Examination of 41 extracted, apically infected mandibular cheek teeth (CT) without obvious causes of infection included radiography, computerised axial tomography and decalcified and undecalcified histology. In CT with recent infections, some pulps remained viable, with proliferative soft and calcified tissue changes confined to the apex. With more advanced CT infections, occlusal pulpar exposure was sometimes present (in 34% of the 41 CT), some infected pulp chambers were filled with necrotic pulp or food, and extensive destructive or proliferative changes were present in the calcified apical tissues.No physical route of infection to the apex was found in 24 CT (59%) that consequently were believed to have anachoretic infections. Fractures involving pulps, including fissure fractures between the clinical crown and infected pulps, were found in eight (20%) CT. Some CT had vertical, full length periodontal destruction between the infected apex and the gingival margin that were believed to be the route of infection in four (19%) CT and dysplastic changes were believed to have caused one (2%) infections.  相似文献   

Intranasal Osteosarcoma in a Dog—A Case Report     

Gabriela Noronha de Toledo  Pamela Rodrigues Reina Moreira  Daniele Santos Rolemberg  Andréia Coutinho Facin  Julio Edward Hough Monteiro  Mareliza Possa de Menezes  Maria Eduarda Bastos Andrade Moutinho da Conceição  Felipe Augusto Ruiz Sueiro  Rosemeri de Oliveira Vasconcelos  Paola de Castro Moraes  Mirela Tinucci Costa  Andrigo Barboza de Nardi 《Topics in companion animal medicine》2018,33(2):35-39

Osteosarcoma is the most commonly reported bone tumor in dogs, typically affecting the axial and appendicular skeleton. Involvement of the paranasal sinuses and the nasal cavity is extremely rare. This report describes a 6-year-old, female, cross-breed dog presented with signs of 90 days duration and diagnosed with a mass located in the right nasal cavity. Radiography, rhinoscopy, and computed tomography findings suggested the presence of an intranasal tumor. Osteosarcoma in the nasal cavity was diagnosed based on histopathological examination and clinical and imaging findings. Survival time was 12 months from diagnosis.  相似文献   

An exploratory investigation of echocardiographic parameters and the effects of posture on cardiac structure and function in the Livingstone's fruit bat (Pteropus livingstonii)          下载免费PDF全文

Aimee L. Drane  Robert Shave  Andrew Routh  Alberto Barbon 《Veterinary radiology & ultrasound》2018,59(1):89-97

There is growing evidence that dilated cardiomyopathy may be a major cause of death in captive Livingstone's fruit bats (Pteropus livingstonii). Therefore, the primary aim of this prospective, exploratory study was to examine whether a systematic cardiac ultrasound protocol is feasible in this critically endangered species and to report basic measures of cardiac structure and function from a cohort of apparently healthy bats. A secondary aim was to test the effect posture (dorsal recumbency vs. roosting) has upon cardiac function in this species. Transthoracic echocardiograms, including 2D, Doppler, and tissue Doppler measures of cardiac structure and function were completed as part of routine health examinations for bats at a single center (n = 19). Bats were then grouped by age and disease status and the mean and range data reported for each group. In healthy adult bats, with the exception of a reduction in heart rate (P ≤ 0.05), right atrial systolic area (P ≤ 0.05), and right ventricular velocity during atrial contraction, there were no significant changes in cardiac structure or function in response to the roosting position. However, in the bats presenting with dilated cardiomyopathy the current data suggest that left ventricular ejection fraction is improved while roosting. Further work is required to confirm our initial findings, generate diagnostic reference intervals, and explore the causes of dilated cardiomyopathy in this species.  相似文献   

Transmission from Seed to Seedling and Secondary Spread of Xanthomonas campestris pv. Campestris in Brassica Transplants: Effects of Dose and Watering Regime     

S.J. Roberts  L.H. Hiltunen  P.J. Hunter  J. Brough 《European journal of plant pathology / European Foundation for Plant Pathology》1999,105(9):879-889

The effects of inoculum load and watering regime on the transmission of Xanthomonas campestris pv. campestris from seed to seedlings of cauliflower were investigated. Seed, inoculated with different concentrations of bacteria, was sown in commercial module trays and subjected to four different watering regimes: high frequency overhead spray, low frequency overhead spray, high frequency capillary and low frequency capillary. Visible symptoms were recorded and leaf washings were carried out to detect the pathogen on symptomless plants. The effects of treatments on symptoms and on the proportion of contaminated but symptomless plants was similar. Initially, they were influenced only by the dose of bacteria with little difference between the watering regimes, but later the proportion of plants with symptoms was greater for plants subjected to overhead watering, due to spread and secondary infection. Generalised linear models were fitted to the data relating the proportion of symptomless contaminated plants or the proportion of plants with symptoms, p, to the mean dose of bacteria per seed, d, and the number of overhead waterings, noh. The equations were: p=1–exp(–0.014·d ^0.32·noh ^0.045) for symptomless contaminated/infected plants and p=1–exp(–0.0056·d ^0.44·noh ^0.014) for plants with symptoms. These models indicated that the one-hit probability for transmission of the pathogen (i.e. with/without visible symptoms) was 0.014 and for infection (i.e. with visible symptoms) was 0.0056.  相似文献   

Experimental reproduction of viral chorioretinitis in kangaroos     

L REDDACLIFF  P KIRKLAND  A PHILBEY  R DAVIS  L VOGELNEST  F HULST  D BLYDE  A DEYKIN  J SMITH  P HOOPER  A GOULD  A HYATT 《Australian veterinary journal》1999,77(8):522-528

OBJECTIVE: To investigate whether preparations containing Wallal and/or Warrego viruses could cause disease when inoculated subcutaneously into captive kangaroos. DESIGN AND PROCEDURE: Four groups of two kangaroos, seronegative to both Wallal and Warrego virus, were each inoculated with wild Wallal virus, cultured Wallal virus, wild Warrego virus, or wild Warrego virus followed by wild Wallal virus after 3 weeks. A single uninoculated animal served as a control. Animals were monitored weekly under anaesthesia, examined ophthalmoscopically (including fundic photography), and samples collected for haematological and serum biochemical analysis, virus isolation, PCR and serological examination for antibodies against Wallal and Warrego viruses. Animals inoculated with cultured Wallal virus were killed at week 10, and remaining kangaroos were reinoculated with cultured Wallal virus at week 12. RESULTS: Virus was isolated from the blood of two kangaroos 2 weeks after inoculation with Wallal virus preparations, and from a third kangaroo 2 weeks after reinoculation. By 3 weeks after inoculation, all kangaroos given Wallal virus preparations had seroconverted to Wallal virus and one had seroconverted to Warrego virus. Fundic changes were detected in the three viraemic kangaroos 4 or more weeks after inoculation, and lesions were present in the eye and brain typical of those seen in field cases of chorioretinitis. No other kangaroos had lesions. Wallal virus was identified by PCR and immunohistochemical analysis in the retina of one affected animal and orbivirus-like particles were seen by electron microscopy in the remains of retinal cells. CONCLUSION: The condition of chorioretinitis was reproduced in three of eight kangaroos by inoculation with preparations containing Wallal virus.  相似文献   

Equine Nasal and Paranasal Sinus Tumours. Part 1: Review of the Literature and Tumour Classification     

K. W. HEAD  P. M. DIXON 《Veterinary journal (London, England : 1997)》1999,157(3):261-278

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