title: [Unusually infected sebaceous cyst by Dermabacter hominis].
abstract: Dermabacter hominis species is constituted by Gram positive facultative anaerobic coryneform rods being part of the resident microbiota human skin, and exceptionally associated to infections in immunocompromised or severely debilitated patients. An immunocompetent young adult woman with a neck sebaceous cyst infected by D. hominis as unique etiologic agent is presented. Phenotypic identification of the causative agent was achieved through simple tests, based on the originally scheme proposed by Funke and Bernard, and feasible to be performed in a hospital Microbiology Laboratory. Phenotypic characteristics as coccoid morphology, the acrid/spermatic odor, esculin hydrolysis, the production of pyrrolidonyl-arylamidase, lysine and ornithine decarboxylase, are key tests to identify D. hominis. The matrix-asisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) confirmed the phenotypic identification.
authors: Departamento de Microbiología, Instituto de Investigaciones Médicas Alfredo Lanari, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina. Electronic address: eugeniabertona@gmail.com.
authors: Eugenia
authors: E
authors: Bertona
authors: Departamento de Microbiología, Instituto de Investigaciones Médicas Alfredo Lanari, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina.
authors: Adriana N
authors: AN
authors: De Paulis
authors: Departamento de Microbiología, Instituto de Investigaciones Médicas Alfredo Lanari, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina.
authors: Miguel A
authors: MA
authors: Gutiérrez
authors: Área Quirúrgica, Instituto de Investigaciones Médicas Alfredo Lanari, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina.
authors: Victoria
authors: V
authors: Santa María
authors: Laboratorio de Bacteriología, Departamento de Bioquímica Clínica, Hospital de Clínicas José de San Martín, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina.
authors: Carlos A
authors: CA
authors: Vay
authors: Departamento de Microbiología, Instituto de Investigaciones Médicas Alfredo Lanari, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina.
authors: Silvia C
authors: SC
authors: Predari
mesh_terms: D000038:Abscess / Q000209:etiology / Q000382:microbiology* / Q000601:surgery; D000193:Actinomycetales Infections / Q000209:etiology / Q000382:microbiology* / Q000601:surgery; D001426:Bacterial Proteins / Q000032:analysis; D015373:Bacterial Typing Techniques; D004322:Drainage; D024901:Drug Resistance, Multiple, Bacterial; D004814:Epidermal Cyst / Q000150:complications / Q000382:microbiology*; D005260:Female; D006801:Humans; D007121:Immunocompetence; D008835:Micrococcaceae / Q000187:drug effects / Q000201:enzymology / Q000302:isolation & purification*; D008875:Middle Aged
chemical_list: D001426:Bacterial Proteins
keywords: Dermabacter hominis; Quiste sebáceo infectado; Sebaceous infected cyst