کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5541448 1402504 2017 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Chromobacterium violaceum Infection in a Horse
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
Chromobacterium violaceum Infection in a Horse
چکیده انگلیسی
Chromobacterium violaceum is an opportunistic pathogen of mammals that produces characteristic violet pigment in bacterial culture. We report pneumonia and septicaemia caused by C. violaceum in a horse. Necropsy examination was performed on a 3-year-old Quarter Horse stallion with a history of recurrent episodes of pneumonia, fever, dyspnoea and sanguineous nasal discharge. The lungs were not collapsed, but they contained dark red foci mixed with white areas, and multiple nodules of firm consistency. Within the liver and kidney there were randomly distributed, multifocal, white pinpoint lesions (0.1-0.5 cm diameter) in the capsule and extending into the parenchyma. The brain and spinal cord contained numerous petechiae. Microscopically, the lung had severe multifocal to coalescing infiltration of degenerate neutrophils within the alveoli and parenchyma associated with extensive areas of necrosis and haemorrhage. Rod-shaped bacteria were often present in the centre of the lesions. There was intense intra-alveolar exudation of fibrin and fibrinoid degeneration of blood vessels associated with thrombosis and ischaemic necrosis adjacent to areas of severe haemorrhage. Similar lesions were present in the liver and kidneys. A pure culture of C. violaceum was obtained from samples of the lung and liver. The identity of the organism was confirmed by amplifying and sequencing the 16S rRNA gene with subsequent analysis of sequence similarity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Comparative Pathology - Volume 156, Issue 4, May 2017, Pages 334-338
نویسندگان
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