Natural lymphatic (“atypical”) actinobacillosis in cattle caused by Actinobacillus lignieresii. Caffarena RD(1)(2), Rabaza A(1)(2), Casaux L(1)(2). Actinobacillosis is a globally prevalent infectious animal disease caused by Gram -negative bacilli of the genus Actinobacillus. Actinobacillus lignieresii is a. Species/Subspecies: Actinobacillus lignieresii. Etymology: Genus name: small ray rod (ray refers to the histological picture of radially localized club-like.

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Affected cattle with draining pyogranulomas contaminate the environment, favoring disease transmission, and should be treated with sodium iodide or antibiotics and isolated from the herd in order to control the disease.

Information on genomic background e. Temperatures Kind of temperature Temperature [Ref.: Salmonella enterica Typhoid feverParatyphoid feverSalmonellosis. Gross finding of the peritoneum showing extensive adhesion to the intestine. The bacteria isolated from the nodules were confirmed to be Actinobacillus lignieresii based on the results of 16S rRNA gene sequencing and immunohistochemistry.

Foamy fluid was identified ligniereski the trachea, and blood clots were found at the tracheal bifurcation. Information on isolation source, the sampling and environmental conditions Isolation, sampling and environmental information. The mesenteric lymph nodes were moderately swollen.

Actinobacillosis – Wikipedia

Rickettsia akari Rickettsialpox Orientia tsutsugamushi Scrub typhus. Acid from D-glucose GLU. A Gram-negative bacillus was isolated from the nodules of the peritoneum, and the isolate was catalase and oxidase positive. In our case, the stress of transportation is a likely predisposing factor for the infection.

Two animals died during the day quarantine period: Some coccidial schizonts were observed at the mucosa of the jejunum.


Thus, a diagnosis of atypical actinobacillosis caused by A. The histologic lesions were multifocal pyogranulomatous lymphadenitis, dermatitis, and cellulitis with Splendore-Hoeppli material.

Atypical Actinobacllus granulomas have been identified in the nasal cavity, cervical area and the lungs in cattle [ 7 ]. This type of A. The authors thank Mr. The jejunal mucosa was extensively congested and focally thickened.

Natural lymphatic (“atypical”) actinobacillosis in cattle caused by Actinobacillus lignieresii.

Retrieved 7 October Actinobacillosis is a zoonotic disease caused by Actinobacillus. Acid from D-fructose FRU. Section Name and taxonomic classification Morphology and physiology Culture and growth conditions Isolation, sampling and environmental information Application and interaction Molecular biology Strain availability. Young cattle are at a risk for infection and may develop the characteristic lesions in a few days lignieresio 8 ].

Click here to see all. Petechial to ecchymotic hemorrhages were observed throughout the lungs. The infection is most commonly caused by abrasions on different soft tissues through which the bacteria, Actinobacillus lignieresii, enters. We describe herein 2 outbreaks of actinobacillosis affecting primarily the lymph nodes of the head and neck. Views Read Edit View history. However, the isolate was susceptible to sulfamethoxazole-trimethoprim.

J Vet Med Sci.

Information on morphological and physiological properties Morphology and physiology. From Wikipedia, the free encyclopedia. Gross examination showed the peritoneum and mesentery consisted of numerous nodules of various sizes.

The presence of granulomas on the peritoneum suggests the organism was disseminated either via blood or via lymphatic vessels.

Anaplasma phagocytophilum Human granulocytic anaplasmosisAnaplasmosis Ehrlichia chaffeensis Human monocytotropic ehrlichiosis Ehrlichia ewingii Ehrlichiosis ewingii infection. One of the most common forms seen by veterinarians is mouth actinobacillosis of cattledue to Actinobacillus lignieresii.


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The cause of death in this animal was bovine respiratory disease complex unrelated to the actinobacillosis identified in animal 1. The isolate was assayed for susceptibility to 7 antibiotics: Immunohistochemistry analysis demonstrated that the Gram-negative bacilli identified in the asteroid bodies of the suppurative granulomas reacted with the antibody against A. Atypical actinobacillosis granulomas in cattle. Only first 5 entries are displayed.

Shimada for histopathological assistance. Enterotoxigenic Enteroinvasive Enterohemorrhagic O Numerous firm foci were disseminated throughout the peritoneum and the mesentery. Actinobacillus lignieresii was isolated from the lesions and identified by amplification, sequencing, and analysis of the 16S ribosomal r DNA gene.

No bacteria were isolated from any of the other lignleresii samples. Actinobacillosis is a globally prevalent infectious animal disease caused by Gram-negative bacilli of the genus Actinobacillus.

Actinobacillus species and their role in animal disease. One steer had an exophytic pyogranuloma in the gingiva and another died because of ruminal tympany secondary to oropharyngeal and esophageal obstruction by a pyogranulomatous mass.

Rickettsia typhi Murine typhus Rickettsia prowazekii Epidemic typhusBrill—Zinsser diseaseFlying squirrel typhus. Atypical actinobacillosis in bulls in Argentina: This page was last edited on 1 Octoberlihnieresii Journal of Veterinary Medicine, Series A.