Characteristics of nocardiosis patients with different immune status from a Chinese tertiary general hospital during 8-year period: A STROBE-compliment observational study.

Nocardia is an opportunistic pathogen from environment, which is generally thought to infect immunosuppressed patients (ISPs), but recent studies showed it could also cause infections in immunocompetent patients (ICPs).The aim of this study was to compare the clinical characteristics, patients' outcome, Nocardia species' identification, and antibiotic susceptibility profiles of nocardiosis between ICPs and ISPs.The detailed clinical data were collected from all the nonrepetitive nocardiosis patients during 2011 and 2018, from a tertiary general hospital in Beijing, China. Then each Nocardia isolate was identified to species level by DNA sequencing. The antibiotic susceptibility testing was performed by E test method, and interpreted following CLSI M24 document. The clinical and microbiological characteristics between ICPs and ISPs were compared statistically.A total of 23 nonrepetitive nocardiosis patients with detailed clinical data were enrolled in this study. Among them, 9 were ICPs and 14 were ISPs. All the skin and soft tissue infections occurred in ICPs (33.3% vs 0%, P < .05). Bronchiectasis occurred more frequently in ICPs (44.4% vs 21.4%), whereas chronic kidney diseases and coinfection with aspergillosis occurred more frequently in ISPs (35.7% vs 0%, 35.7% vs 0%, respectively), although they did not reach the statistical significance. There were no significant differences in other clinical characteristics, Nocardia species' identification, and antibiotic susceptibility between ISPs and ICPs (P > .05).Nocardiosis could occur in both ISPs and ICPs. Skin and soft tissue infection and bronchiectasis occurred more frequently in ICPs. Chronic kidney diseases and co-infection with aspergillosis occurred more frequently in ISPs. These characteristics should be noticed by physicians in diagnosis of nocardiosis.

Whole-genome sequence of Nocardiopsis alba strain ATCC BAA-2165, associated with honeybees.

The actinomycete Nocardiopsis alba was reportedly associated with honeybees in separate occurrences. We report the complete genome of Nocardiopsis alba ATCC BAA-2165 isolated from honeybee guts. It will provide insights into the metabolism and genetic regulatory networks of this genus of bacteria that enable them to live in a range of environments.

Nocardiosis cutánea y sus formas clínicas / Cutaneous nocardiosis and its various presentations

La nocardiosis cutánea es una dermatosis infecciosa poco frecuente, que puede presentarse tanto en individuos inmunocompetentes como en inmunocomprometidos. A continuación se describen tres pacientes de sexo masculino inmunosuprimidos, en tratamiento con corticoesteroides, que presentaron diferentes formas clínicas de nocardiosis cutánea.

Cutaneous nocardiosis is a rare opportunistic infection found in bothimmunocompromised and immunocompetent patients. We describe three male immunocompromised patients who exhibited diff erent clinical forms of cutaneous nocardiosis. All of them were under corticosteroid regimen.

Cutaneous Nocardia asteroides infection of nontraumatic origin

E relatado um caso de infeccao cutanea de origem nao traumatica por Nocardia asteroides em paciente hospitalizado com doenca broncopulmonar obstrutiva cronica. O diagnostico foi feito pelo exame direto e histologico e culturas do exsudato e fragmento de biopsia. E discutida a classificacao das formas clinicas das infeccoes por Nocardia que afetam a pele.