Atypical cutaneous actinobacillosis in young beef cattle

Cahalan, Stephen D.; Sheridan, Lisa; Akers, C. R.; Lorenz, I.; Cassidy, Joseph P.

doi:10.1136/vr.100906

Cited by 10 publications

(11 citation statements)

References 11 publications

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“…Actinobacillosis usually is considered a sporadic condition, typically involving the tongue in cattle (“wooden tongue”) . Lymphadenitis and granulomatous skin lesions involving other tissues (oral cavity, fore‐stomachs, skin of the head, neck and occasionally limbs) also have been reported, sometimes with several animals concomitantly affected in a single herd . In our report, 2 animals from a single herd had nodular dermatitis affecting the hind limbs with associated swelling, enlarged regional lymph nodes, pneumonia, and weight loss.…”

Section: Discussionsupporting

confidence: 56%

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Atypical actinobacillosis affecting hind limbs and lungs in a single beef cattle herd

Relun¹,

Cesbron

Bourdeau³

et al. 2018

Veterinary Internal Medicne

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Actinobacillosis usually is a sporadic infection that affects the tongue in cattle (“wooden tongue”) with possible spread to the digestive tract. Two 4‐year‐old Rouge‐des‐Prés cows from a single French beef herd were referred for chronic (2‐6 months) swelling and cutaneous nodules in the distal hind limbs. In addition to cutaneous signs, physical examination disclosed cachexia, lameness, lymphadenitis of the hind limbs, and pneumonia in both cows. Cytologic examination of direct skin smears was inconclusive, and no parasites were observed in examination of multiple skin scrapings. Histopathological examination of skin and lung biopsy specimens identified chronic, diffuse, severe pyogranulomatous dermatitis, associated with Splendore‐Hoeppli phenomenon and intralesional Gram‐negative bacteria. Cultures from skin, lymph nodes, and lungs (both cows were euthanized for welfare reasons) identified a Pasteurellaceae organism, confirmed as Actinobacillus lignieresii by partial sequencing of the rpoB gene. This report emphasizes that actinobacillosis can appear as a small outbreak in cattle with cutaneous and respiratory signs.

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Section: Discussionsupporting

confidence: 56%

“…However, their occurrence could not be excluded because the cows had been treated with ivermectin and fenvalerate before referral. The difficulty that cows have licking their forelimbs could explain why, although forelimbs may have had wounds, only hindquarters were affected, as previously reported …”

Section: Discussionmentioning

confidence: 54%

Atypical actinobacillosis affecting hind limbs and lungs in a single beef cattle herd

Relun¹,

Cesbron

Bourdeau³

et al. 2018

Veterinary Internal Medicne

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“…Actinobacillosis does not normally occur in outbreaks and is normally sporadic, affecting only a small proportion of cattle at a time . There has been a report of an outbreak of cutaneous actinobacillosis with high morbidity over 11 months associated with overcrowding, rough food and a contaminated environment . In an outbreak of lymphatic, or atypical, actinobacillosis in a dairy herd, 40 of 540 cows had lesions in the lymph nodes of the mandible and neck …”

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confidence: 99%

“…1 There has been a report of an outbreak of cutaneous actinobacillosis with high morbidity over 11 months associated with overcrowding, rough food and a contaminated environment. 6 In an outbreak of lymphatic, or atypical, actinobacillosis in a dairy herd, 40 of 540 cows had lesions in the lymph nodes of the mandible and neck. 7 A. lignieresii is very closely related to the pig pathogen Actinobacillus pleuropneumoniae, with 16S rRNA sequencing unable to distinguish the two species.…”

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confidence: 99%

Diverse strains of Actinobacillus lignieresii isolated from clinically affected cattle in a geographically restricted area

Turni

Yee

Epstein³

et al. 2019

Aust Veterinary J

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Objective To investigate whether an outbreak of Actinobacillus lignieresii was caused by one or multiple strains. Methods Nine isolates of A. lignieresii were obtained from the lymph nodes of 15 affected cattle from two farms to determine whether a single strain was involved. An enterobacterial repetitive insertion consensus sequence (ERIC) PCR was used for genotyping, and the repeats‐in‐toxin genes were analysed by PCR and sequencing. Results Isolates from the two farms belonged to two and three genotypes, with a total of four genotypes detected. Genes of the apxICABD operons of some strains had deletions in the apxIA (~697 bp) and in the apxID (~187 bp) genes. The toxin gene deletions and the ERIC PCR patterns suggested the involvement of different A. lignieresii genotypes. Conclusion There was no evidence that a unique genotype was associated with actinobacillosis on the two farms, confirming that this disease was associated with other contributing factors.

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“…However, the infection may not be limited to the oral cavity and tongue, and can spread to the adjacent soft tissues of the mouth and regional lymph nodes [ 8 ]. Granulomatous lesions in the skin (cutaneous form), lymph nodes [ 5 ], head, flank, wall of the stomach and limbs [ 2 ] have been reported in cases of A. lignieresii infection. Atypical Actinobacillus granulomas have been identified in the nasal cavity, cervical area and the lungs in cattle [ 7 ].…”

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confidence: 99%

Multifocal suppurative granuloma caused by <i>Actinobacillus lignieresii</i> in the peritoneum of a beef steer

Kasuya¹,

Manchanayake

Uenoyama³

et al. 2017

The Journal of Veterinary Medical Science

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An imported crossbred Angus beef steer aged eight to twelve months died suddenly on the eighth day of a quarantine period in Japan. Gross examination showed the peritoneum and mesentery consisted of numerous nodules of various sizes. Histological examination revealed chronic suppurative granulomatous peritonitis with eosinophilic rosettes surrounding colonies of Gram-negative bacilli. The bacteria isolated from the nodules were confirmed to be Actinobacillus lignieresii based on the results of 16S rRNA gene sequencing and immunohistochemistry. Antibiotic sensitivity testing showed that the isolate was resistant to penicillin. Thus, a diagnosis of atypical actinobacillosis caused by A. lignieresii was made.

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Atypical cutaneous actinobacillosis in young beef cattle

Cited by 10 publications

References 11 publications

Atypical actinobacillosis affecting hind limbs and lungs in a single beef cattle herd

Atypical actinobacillosis affecting hind limbs and lungs in a single beef cattle herd

Diverse strains of Actinobacillus lignieresii isolated from clinically affected cattle in a geographically restricted area

Multifocal suppurative granuloma caused by <i>Actinobacillus lignieresii</i> in the peritoneum of a beef steer

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