title: Streptococcus constellatus-associated pyoderma in a dog.
abstract: This report describes a case of chronic and deep pyodermitis in a 4-year-old male dog with a 3-month skin problems history that had been treated unsuccessfully with fluoroquinolone therapy, prescribed by a private medical veterinary practice, without an early diagnosis. Microbiological examination and antimicrobial susceptibility testing were performed in our laboratory (Faculty of Veterinary Medicine) and a diagnosis of Streptococcus constellatus-associated pyoderma in the dog was made. A new antimicrobial treatment, with tetracyclines, was designed after the definitive diagnosis and antimicrobial susceptibility testing performed by the Kirby-Bauer disc diffusion method. The dog remained free of clinical illness at completion of therapy. To our knowledge, this is the first case of a canine pyoderma caused by S. constellatus, a commensal organism which may also cause pyogenic infections. Furthermore, this study confirms that a fluoroquinolone represents a poor empirical choice for initial therapy of canine pyoderma.
authors.affiliation: Department of Pathology and Animal Health, Faculty of Veterinary Medicine, University of Naples 'Federico II', Via F. Delpino 1, 80137 Naples, Italy.
authors.forename: Luisa
authors.initials: L
authors.lastname: De Martino
authors.affiliation: Department of Pathology and Animal Health, Faculty of Veterinary Medicine, University of Naples 'Federico II', Via F. Delpino 1, 80137 Naples, Italy.
authors.forename: Sandra
authors.initials: S
authors.lastname: Nizza
authors.affiliation: Department of Pathology and Animal Health, Faculty of Veterinary Medicine, University of Naples 'Federico II', Via F. Delpino 1, 80137 Naples, Italy.
authors.forename: Claudio
authors.initials: C
authors.lastname: de Martinis
authors.affiliation: Department of Veterinary Clinical Sciences, Faculty of Veterinary Medicine, University of Naples 'Federico II', Via F. Delpino 1, 80137 Naples, Italy.
authors.forename: Valentina
authors.initials: V
authors.lastname: Foglia Manzillo
authors.affiliation: Department of Pathology and Animal Health, Faculty of Veterinary Medicine, University of Naples 'Federico II', Via F. Delpino 1, 80137 Naples, Italy.
authors.forename: Valentina
authors.initials: V
authors.lastname: Iovane
authors.affiliation: Department of Pathology and Animal Health, Faculty of Veterinary Medicine, University of Naples 'Federico II', Via F. Delpino 1, 80137 Naples, Italy.
authors.forename: Orlando
authors.initials: O
authors.lastname: Paciello
authors.affiliation: Department of Pathology and Animal Health, Faculty of Veterinary Medicine, University of Naples 'Federico II', Via F. Delpino 1, 80137 Naples, Italy.
authors.forename: Ugo
authors.initials: U
authors.lastname: Pagnini
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000008:administration & dosage; D004283:Dog Diseases / Q000175:diagnosis* / Q000188:drug therapy / Q000382:microbiology* / Q000473:pathology; D004285:Dogs; D006651:Histocytochemistry; D008297:Male; D008826:Microbial Sensitivity Tests; D008853:Microscopy; D011711:Pyoderma / Q000175:diagnosis / Q000188:drug therapy / Q000382:microbiology / Q000662:veterinary*; D012867:Skin / Q000473:pathology; D013290:Streptococcal Infections / Q000175:diagnosis / Q000188:drug therapy / Q000382:microbiology / Q000662:veterinary*; D034365:Streptococcus constellatus / Q000302:isolation & purification*
chemical_list: D000900:Anti-Bacterial Agents