title: Multifocal suppurative granuloma caused by Actinobacillus lignieresii in the peritoneum of a beef steer.
abstract: 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.
authors: Moji Branch Shinmoji Detention Facility, Animal Quarantine Service, 3-1-2 Shinmojikita, Moji, Kitakyushu, Fukuoka 800-0113, Japan.
authors: Kazufumi
authors: K
authors: Kasuya
authors: Tilusha
authors: T
authors: Manchanayake
authors: Kei
authors: K
authors: Uenoyama
authors: Sayaka
authors: S
authors: Kawa
authors: Kou
authors: K
authors: Takayama
authors: Naoto
authors: N
authors: Imai
authors: Tomoyuki
authors: T
authors: Shibahara
mesh_terms: D000187:Actinobacillosis / Q000382:microbiology / Q000401:mortality / Q000473:pathology*; D000188:Actinobacillus / Q000187:drug effects / Q000235:genetics / Q000302:isolation & purification*; D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology; D002417:Cattle; D002418:Cattle Diseases / Q000382:microbiology / Q000473:pathology*; D017809:Fatal Outcome; D006099:Granuloma / Q000382:microbiology / Q000473:pathology / Q000662:veterinary*; D008297:Male; D010403:Penicillin Resistance; D010538:Peritonitis / Q000382:microbiology / Q000473:pathology / Q000662:veterinary*; D013492:Suppuration / Q000382:microbiology / Q000473:pathology / Q000662:veterinary
chemical_list: D000900:Anti-Bacterial Agents