Pulmonary Infection Caused by Mycobacterium neoaurum: The First Case in Korea

Kim, Changki; Choi, Soo In; Jeon, Byung Ryul; Lee, Yong-Wha; Lee, You Kyoung; Shin, Hee Bong

doi:10.3343/alm.2014.34.3.243

Cited by 8 publications

(10 citation statements)

References 14 publications

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“…are known as pathogenic species. Both M. peregrinum and M. neoaurum are fast growing mycobacteria that can cause bloodstream infections in immunocompromised hosts, and, unlike other NTM species [57]. M. marinum is a recognized fish pathogen that can also infect endothermic organisms, including humans.…”

Section: Discussionmentioning

confidence: 99%

Molecular Identification and Characterization of Vibrio Species and Mycobacterium Species in Wild and Cultured Marine Fish from the Eastern Mediterranean Sea

et al. 2020

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In contrast to numerous documented pathogens and infectious diseases of aquaculture, there is a lack of baseline data and information regarding pathogenic agents’ prevalence in wild marine fish populations. This study focused on two common fish pathogenic microorganisms, namely Mycobacterium species and Vibrio species, both of which are known to be major causes of fish loss, occasionally to the extent of being a limiting factor in fish production. Both microorganisms are known as zoonotic agents. In total, 210 wild marine indigenous and Lessepsian fish from four different species from the eastern Mediterranean Sea were sampled and tested for Vibrio species and Mycobacterium species during a two-year period (2016–2017). Using PCR with 16S rRNA primers, we detected different strain variations of Mycobacterium species and Vibrio species and, based on the sequencing results, the overall prevalence for Vibrio species in wild fish in 2016 was significantly higher compared to 2017. No significant difference was detected for Mycobacterium species prevalence in wild fish between 2016 and 2017. In addition, 72 gilthead seabream (Sparus aurata) from an Israeli offshore marine farm were also examined during the two-year period (2017–2018). The results suggest that Mycobacterium species prevalence was significantly higher in 2018, while in 2017 there was no positive results for Mycobacterium species. In addition, there was no significant difference between both years in regard to the prevalence of Vibrio species for maricultured fish. These results highlight the necessity of continuous molecular monitoring in order to evaluate the prevalence of pathogenic microorganisms in both wild and cultured fish populations.

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Section: Discussionmentioning

confidence: 99%

Molecular Identification and Characterization of Vibrio Species and Mycobacterium Species in Wild and Cultured Marine Fish from the Eastern Mediterranean Sea

et al. 2020

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“…Se ha realizado una investigación bacteriológica en diferentes especies de micobacterias patógenas encontradas frecuentemente en el aislamiento de muestras clínicas (17,18) . En las nueve especies de micobacterias estudiadas no hallamos diferencias significativas respecto a la morfología de las colonias en medio sólido 7H11 por microscopía de fase invertida, a pesar de que estudios previos hacen presumir la diferenciación colonial microscópica de diferentes especies, fundamentada en las moléculas lipídicas, proteicas y azúcares (9,(11)(12)(13) .…”

Section: Discussionunclassified

“…Las tendencias a la agrupación celular se observaron en diferentes grados en las muestras teñidas con el método de ZN para cada especie de micobacteria, por ejemplo, Mycobacterium chelonae, Mycobacterium marinum, Mycobacterium terrae y Mycobacterium neoaurum mostraron un patrón de bacilos no agrupados; en Mycobacterium avium formaban diplobacilos; en Mycobacterium fortuitum y Mycobacterium smegmatis formaban cadenas cortas y en Mycobacterium gordonae se observó cadenas largas. En M. tuberculosis se observó la formación de cordones con el mayor patrón de agrupación, esto podría relacionarse con la virulencia de la bacteria según lo mencionado en estudios previos (14,18) .…”

Section: Identificación De Micobacteriasunclassified

“…Las diferentes especies de micobacterias estudiadas son capaces de formar cordones en etapas tempranas en el medio 7H11, tal como se observan en las figuras. La formación de cordones fue reportada por primera vez por Robert Koch y fue atribuida a una relación entre la virulencia y el fenotipo de M. tuberculosis (18) , posterior a esto, otros estudios reportaron la formación de cordones por otras especies de micobacterias (19) .…”

Section: Identificación De Micobacteriasunclassified

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Identificación de micobacterias en medio sólido mediante microscopía de fase invertida y tinción Ziehl-Neelsen

Rojas‐Jaimes

Giraldo-Chavez

Huyhua-Flores

et al. 2018

Rev Peru Med Exp Salud Publica

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With the aim of identifying morphological differences in colonies of different species of mycobacteria by means of inverted phase microscopy, nine species of high-prevalence pathogenic mycobacteria were seeded in 7H11 solid medium and were observed for up to 21 days. Additionally, Ziehl-Neelsen (ZN) stains were carried out for each one of them. No morphological variations were identified among the species grown on solid medium; however, it was identified that all are able to form cords in solid medium in an early stage of growth, being corroborated by the Ziehl-Neelsen stain in Mycobacterium tuberculosis. so techniques based on detecting M. tuberculosis depending on the identification of the cords should be taken with caution so as not to generate a bad diagnosis, so microbiological characteristics could also be established as a minimum time to detect growth, temperature of growth and bacillary characteristics based on the Ziehl-Neelsen stain for each species studied.

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“…Central nervous system infections involving Mycobacterium mucogenicum are rare but serious, particularly for immunocompromised patients resulting in meningitis due to this organism 5 . Skin and soft tissue infections caused by these organisms have also been reported 4,10 .…”

Section: Introductionmentioning

confidence: 99%

Mycobacterium mucogenicum and Mycobacterium neoaurum Bloodstream Infection in Immunocompromised Hosts

Villalobos¹,

Rotstein²

2020

Preprint

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Background Mycobacterium mucogenicum and Mycobacterium neoaurum are an infrequent cause of bloodstream infection in humans. When they are isolated from blood, it is not unusual for them to be considered to be contaminants initially. Methods A retrospective chart review of patients diagnosed with M. mucogenicum and M. neoaurum bacteremia was conducted from January 1998 to December 2018 at the University Health Network, Toronto, Canada. Results We identified 28 patients who had bloodstream infection caused by these organisms. These patients were immunocompromised hosts, patients with chronically indwelling vascular access devices or injection drug users. In 28.5% of the patients the isolation of these mycobacteria was considered colonization, 82% of the cases received antimicrobial therapy and in 95% of the patients the central line was removed. Conclusions The removal of the vascular access device and treatment with either single or combination antimicrobial therapy produced successful outcomes for these infections.

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Pulmonary Infection Caused by Mycobacterium neoaurum: The First Case in Korea

Cited by 8 publications

References 14 publications

Molecular Identification and Characterization of Vibrio Species and Mycobacterium Species in Wild and Cultured Marine Fish from the Eastern Mediterranean Sea

Molecular Identification and Characterization of Vibrio Species and Mycobacterium Species in Wild and Cultured Marine Fish from the Eastern Mediterranean Sea

Identificación de micobacterias en medio sólido mediante microscopía de fase invertida y tinción Ziehl-Neelsen

Mycobacterium mucogenicum and Mycobacterium neoaurum Bloodstream Infection in Immunocompromised Hosts

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