Parosteal osteosarcoma of the mandible in a dog

A mandibular parosteal osteosarcoma was diagnosed in a 7-year-old Collie with prolapse of the third eyelid. Diagnosis was made by histologic evaluation of a mass removed by surgical excision. The dog was euthanatized because of local recurrence of the tumor, with metastasis to the lungs. Parosteal osteosarcomas are rarely reported in dogs and usually involve long bones in human beings.     

Bacterial-associated diarrhea in the dog: a critical appraisal.

The clinical documentation of enteropathogenic bacteria causing diarrhea in dogs is clouded by the presence of many of these organisms existing as normal constituents of the indigenous intestinal flora. The diagnosis of a putative bacterial enteropathogen(s) in dogs should be made based on a combination of parameters, including signalment and predisposing factors, clinical signs, serologic assays for toxins, fecal culture, and PCR. Relying on results of fecal culture alone is problematic, because C perfringens, C difficile, Campylobacter spp, and pathogenic and non-pathogenic E coli are commonly isolated from apparently healthy dogs [10,13,33]. Nevertheless, culture may be useful in procuring isolates for the application of molecular techniques, such as PCR, for detection of specific toxin genes or molecular typing of isolated strains to establish clonality in suspected outbreaks. The oversimplistic attempt to characterize bacterially associated diarrhea by anatomic localization of clinical signs should be discouraged, because most of the previously mentioned bacteria have been associated with small and large intestinal diarrhea. Accurate diagnosis of infections may require diagnostic laboratories to incorporate PCR-based assays using genus- and species-specific primers to facilitate detection of toxin genes and differentiation of species that appear phenotypically and biochemically similar. There has been tremendous interest in the application of microarray technology for the simultaneous detection of thousands of genes or target DNA sequences on one glass slide. This powerful tool could be used for detection of specific pathogenic bacterial strains in fecal specimens obtained from dogs in the future.     

XX. Forstliche Versuche

Ohne Zusammenfassung     

鸭疫里氏杆菌各血清型在我国的分布

鸭疫里氏杆菌病(Riemerella anatipestifersis,RA)是家鸭、火鸡、鹅和多种其它鸟类的一种接触性传染病,能引起1～8周龄的鸭发生浆膜炎、心包炎、气囊炎和肝周炎等为特征的急性败血性传染病。我国近年来对该病病原的分离及其血清型的鉴定等方面进行了较多的研究,目前已证实我国有1、2、3、4、5、6、7、8、10、11、13、14、15、17等14种血清型的RA,另新发现4种新血清型(22、23、24、25型),多种血清型的存在是造成该病防制困难的重要原因。本文介绍了我国对RA血清型的研究,及各血清型在我国的分布,以期对综合防制该病有一定的启发和指导。     

Immunodiscrimination Between Native and Recombinant Somatotropin: a Possible Pathway?

Veterinary Research Communications -