Effect of in vitro inoculation of bovine respiratory syncytial virus on bovine pulmonary alveolar macrophage function   总被引：2，自引：0，他引：2  

E Trigo  H D Liggitt  J F Evermann  R G Breeze  L Y Huston  R Silflow 《American journal of veterinary research》1985,46(5):1098-1103

Viruses may predispose the respiratory tract to the development of secondary bacterial pneumonia by impairing functions of alveolar macrophages. The effects of bovine respiratory syncytial virus (BRSV) on selected functions of bovine pulmonary alveolar macrophages (PAM) were examined in vitro. Alveolar macrophages were obtained from nonsedated cattle, using a polypropylene tube passed intranasally into the lung. The PAM lavaged from the lung were allowed to adhere to glass coverslips or plastic tissue culture plates, and were exposed to BRSV for 2 hours. Control and BRSV-inoculated PAM were compared at intervals over a 72-hour period for their abilities to phagocytize and kill Staphylococcus epidermidis, rosette with and phagocytize antibody-coated sheep RBC (SRBC), phagocytize latex particles, and influence lysosomal enzyme activity. Challenge exposure with BRSV did not affect the ability of PAM to adhere and did not affect cell viability. There were numerical differences between control and BRSV-inoculated cell populations in phagocytosis and killing of S epidermidis, but these were not significant (P greater than 0.05). There was less than 5% difference in the abilities of control and BRSV-challenged PAM to phagocytize latex beads. When Fc-receptor-mediated phagocytosis of antibody-coated SRBC was compared with controls, BRSV-challenged PAM had significantly (P less than 0.05) impaired phagocytic function, which was maximal 72 hours after BRSV inoculation; the phagocytic impairment occurred in spite of normal Fc-receptor function, as determined by rosetting with antibody-coated SRBC.(ABSTRACT TRUNCATED AT 250 WORDS)  相似文献   

A bovine disease similar to farmer's lung: extrinsic allergic alveolitis   总被引：8，自引：0，他引：8  

H M Pirie  C O Dawson  R G Breeze  A Wiseman  J Hamilton 《The Veterinary record》1971,88(14):346-351

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Changes to the Journal in 2006     

ML REVINGTON 《Australian veterinary journal》2005,83(9):540-541

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Identification of Chlamydia gallinacea in a parrot and in free‐range chickens in Australia     

HS Stokes  JM Martens  A Chamings  K Walder  ML Berg  Y Segal  ATD Bennett 《Australian veterinary journal》2019,97(10):398-400

Chlamydia gallinacea is a recently described bacterial species in a genus known to infect and cause disease in animals and humans. Our report describes the identification of C. gallinacea infection in free‐range laying chickens (Gallus gallus) in Australia, and the identification of C. gallinacea infection in a parrot, a wild Australian galah (Eolophus roseicapillus). There is currently little knowledge of the effects of C. gallinacea infection on avian hosts, but it has been linked to respiratory disease in humans and could potentially cause similar disease in other species. Our report highlights the need for further study and surveillance of Chlamydia species in both wild and domestic hosts in Australia.  相似文献   

Qualitative and quantitative ultrasound attributes of maternal‐foetal structures in pregnant ewes          下载免费PDF全文

PDA da Silva  RAR Uscategui  VJC Santos  AR Taira  RSG Mariano  MGK Rodrigues  APR Simões  MC Maronezi  ML Avante  WRR Vicente  MAR Feliciano 《Reproduction in domestic animals》2018,53(3):725-732

The aim of this study was to examine foetal organs and placental tissue to establish a correlation between the changes in the composition of these structures associated with their maturation and the ultrasonographic characteristics of the images. Twenty‐four pregnant ewes were included in the study. Ultrasonography assessments were performed in B‐mode, from the ninth gestational week until parturition. The lungs, liver and kidneys of foetuses and placentomes were located in transverse and longitudinal sections to evaluate the echogenicity (hypoechoic, isoechoic, hyperechoic or mixed) and echotexture (homogeneous and heterogeneous) of the tissues of interest. For quantitative evaluation of the ultrasonographic characteristics, it was performed a computerized image analysis using a commercial software (Image ProPlus^®). Mean numerical pixel values (NPVs), pixel heterogeneity (standard deviation of NPVs) and minimum and maximum pixel values were measured by selecting five circular regions of interest in each assessed tissue. All evaluated tissues presented significant variations in the NPVs, except for the liver. Pulmonary NPVmean, NPVmin and NPVmax decreased gradually through gestational weeks. The renal parameters gradually decreased with the advancement of the gestational weeks until the 17th week and later stabilized. The placentome NPVmean, NPVmin and NPVmax decreased gradually over the course of weeks. The hepatic tissue did not show echogenicity and echotexture variations and presented medium echogenicity and homogeneous echotexture throughout the experimental period. It was concluded that pixels numerical evaluation of maternal‐foetal tissues was applicable and allowed the identification of quantitative ultrasonographic characteristics showing changes in echogenicity related to gestational age.  相似文献   

Toxoplasma gondii antibody in domestic cats in Melbourne     

B SUMNER  ML ACKLAND 《Australian veterinary journal》1999,77(7):447-449

OBJECTIVES: To determine the prevalence of Toxoplasma gondii in a population of domestic cats in Melbourne. DESIGN: An ELISA assay was used to measure T gondii antibody titres in 103 cats from north-eastern Melbourne. Cats were obtained from outer suburban areas (less than 30 km from the Melbourne GPO) and from rural areas (more than 30 km from the Melbourne GPO). RESULTS: Thirty-nine percent of cats were positive for T gondii IgG. Older cats tended to have higher antibody titres. There was no significant difference in the T gondii antibody titres between males and females, or between cats living in urban areas and cats from rural areas. CONCLUSIONS: A significant proportion of cats from Melbourne have been exposed to Toxoplasma. This may have implications for the health of wildlife and humans.  相似文献   

辽宁省棉铃虫虫情划区的调查研究   总被引：1，自引：0，他引：1  

褚茗莉  许国庆  田本志  赵季秋  蒋玉文  孙立德 《辽宁农业科学》2000,(1):15-18

研究表明,北方特早熟棉区的辽宁省各地棉铃虫的发生程度与气温（年均等温线８～９℃）、降水（年平均降水量５００～７００ｍｍ）及寄主植物的分布三个条件重合程度呈明显的正相关。据此,将本省棉铃虫的发生区域划分为：重发生区、轻发生区、可发生区、偶发生区、不发生区,并绘制出棉铃虫区域划分图。  相似文献   

Pyloric outflow obstruction secondary to sclerosing encapsulating peritonitis in a dog     

KA Carroll  ML Wallace  TL Hill  JW Bartges  JL Ruby  AT Mulder II  JI Helmick 《Australian veterinary journal》2020,98(1-2):11-16

A 6-year-old, male neutered mixed breed dog was presented emergently with a three-week history of hyporexia, vomiting, diarrhoea and weight loss. Upon examination, the patient was dull, had generalised muscle atrophy, moderate abdominal pain and a mild amount of peritoneal effusion. A fluid-filled, distended, corrugated small bowel with marked gastroparesis and moderate peritoneal effusion was noted on abdominal ultrasonography. Endoscopy revealed hyperaemic and friable mucosa and a subjectively narrowed pylorus. Emergency exploratory celiotomy was performed due to worsening patient condition and revealed thick, diffuse, fibrous adhesions of the abdominal cavity. Based on these findings, sclerosing encapsulating peritonitis (SEP) was suspected. A large mass of omentum adjacent to the greater curvature of the stomach had caused a pyloric outflow obstruction. Adhesiolysis was attempted but was unsuccessful due to the friability of the small intestines. The dog was humanely euthanased under anaesthesia. A diagnosis of SEP was confirmed via necropsy. No underlying cause was identified. This is the first known case of a pyloric outflow obstruction secondary to SEP in a dog. Although rare, this condition should be considered as a differential for dogs with signs of a pyloric outflow obstruction with concurrent ascites and abdominal pain, hyporexia, vomiting and diarrhoea.  相似文献   

Companion animal veterinarians' use of clinical communication skills     

ML McArthur  JR Fitzgerald 《Australian veterinary journal》2013,91(9):374-380

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Oxytetracycline by injection for horses     

ML Jansen 《New Zealand veterinary journal》2013,61(2)

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