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Campbell AM, Willis K, Parsons E. Forecasting climate-associated non-tuberculous mycobacteria (NTM) infections in the UK using international surveillance data and machine learning. PLOS GLOBAL PUBLIC HEALTH 2024; 4:e0003262. [PMID: 39159199 PMCID: PMC11332936 DOI: 10.1371/journal.pgph.0003262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Accepted: 07/17/2024] [Indexed: 08/21/2024]
Abstract
Nontuberculous mycobacteria (NTM) cause skin and lung infections, have high mortality rates, and are resistant to a range of antibiotics and water treatment methods. As NTM reside in environmental reservoirs, they are sensitive to environmental conditions. The suitability of their environmental reservoirs can increase as a result of climate change, subsequently increasing environmental exposure and infection rates. NTM infections are not generally notifiable, including in the UK, but sustained increases have been observed in regions that report NTM infection rates. To assess the burden of NTM infections in the UK under projected climate change, we examined the relationship between climate variables and available NTM surveillance data internationally. Statistically significant increases were found in regions where NTM infections are notifiable, which were positively associated with increased precipitation and temperatures. A random forest regressor was trained using supervised learning from international NTM surveillance data and linked climate variables. The random forest model was applied to UK climate projections, projecting a 6.2% increase in NTM infection rates over the next 10 years, with notable regional variation. Our random forest model predicts that the forecasted impacts of climate change in the UK, including increasing temperatures and frequency of heavy rainfall, will lead to increases in NTM infection rates. Robust surveillance in the future is necessary to increase data available to train models, increasing our predictive power in forecasting climate-associated NTM trends. Our results highlight a novel aspect of how climate change will impact health outcomes in the UK.
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Affiliation(s)
- Amy Marie Campbell
- Global Assessment and Emerging Hazards Division, UK Health Security Agency, London, United Kingdom
| | - Katy Willis
- Global Assessment and Emerging Hazards Division, UK Health Security Agency, London, United Kingdom
| | - Edward Parsons
- Global Assessment and Emerging Hazards Division, UK Health Security Agency, London, United Kingdom
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Hu Y, Zhang C, Jia L. Pneumonia due to Mycobacterium cosmeticum in a patient with systemic sclerosis: A case report. Clin Case Rep 2023; 11:e7464. [PMID: 37273677 PMCID: PMC10238707 DOI: 10.1002/ccr3.7464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 05/10/2023] [Accepted: 05/19/2023] [Indexed: 06/06/2023] Open
Abstract
Pulmonary infection due to Mycobacterium cosmeticum was reported in only two patients previously. More studies are warranted to define its characteristics and treatments. We report a systemic sclerosis patient who had a pulmonary infection due to M. cosmeticum and then successfully recovered after treatment with combination antibiotic regimen.
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Affiliation(s)
- Yueqin Hu
- Department of pharmacyYichang Central People's Hospital & The First Clinical Medical College of China Three Gorges UniversityYichangChina
| | - Chao Zhang
- Department of pneumologyYichang Central People's Hospital & The First Clinical Medical College of China Three Gorges UniversityYichangChina
| | - Liangliang Jia
- Department of pharmacyYichang Central People's Hospital & The First Clinical Medical College of China Three Gorges UniversityYichangChina
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3
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Moghaddam S, Nojoomi F, Dabbagh Moghaddam A, Mohammadimehr M, Sakhaee F, Masoumi M, Siadat SD, Fateh A. Isolation of nontuberculous mycobacteria species from different water sources: a study of six hospitals in Tehran, Iran. BMC Microbiol 2022; 22:261. [PMID: 36309645 DOI: 10.1186/s12866-022-02674-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 10/20/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Purpose
Nontuberculous mycobacteria (NTM) are ubiquitous bacteria that are naturally resistant to disinfectants and antibiotics and can colonize systems for supplying drinking water. Therefore, this study aimed to evaluate the prevalence of NTM in the drinking water of six hospitals in Tehran, Iran.
Methods
Totally, 198 water samples were collected. Each water sample was filtered via a membrane filter with a pore size of 0.45 µm and then decontaminated by 0.005% cetylpyridinium chloride. The membrane filters were incubated on two Lowenstein-Jensen media at 25 °C and 37 °C for 8 weeks. The positive cultures were identified with phenotypic tests, and then NTM species were detected according to the hsp65, rpoB, and 16S rDNA genes. Drug susceptibility testing (DST) was also carried out.
Results
Overall, 76 (40.4%) of the isolates were slowly growing mycobacteria (SGM) and 112 (59.6%) of the ones were rapidly growing mycobacteria (RGM). The most common NTM were Mycobacterium aurum, M. gordonae, M. phocaicum, M. mucogenicum, M. kansasii, M. simiae, M. gadium, M. lentiflavum, M. fortuitum, and M. porcinum. Among these 188 samples, NTM ranged from 1 to > 300 colony-forming unit (CFU) /500 mL, with a median of 182 CFU/500 mL. In the infectious department of all hospitals, the amount of CFU was higher than in other parts of the hospitals. The DST findings in this study indicated the diversity of resistance to different drugs. Among RGM, M. mucogenicum was the most susceptible isolate; however, M. fortuitum showed a different resistance pattern. Also, among SGM isolates, M. kansasii and M. simiae, the diversity of DST indicated.
Conclusions
The current study showed NTM strains could be an important component of hospital water supplies and a possible source of nosocomial infections according to the CFU reported in this study. The obtained findings also help clarify the dynamics of NTM variety and distribution in the water systems of hospitals in the research area.
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Moore RR, Holder D, Earnest S. Diagnosing and treating Mycobacterium kansasii. JAAPA 2022; 35:32-34. [PMID: 35762953 DOI: 10.1097/01.jaa.0000824932.43060.3f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
ABSTRACT This article describes an 18-year-old immunocompetent patient who developed Mycobacterium kansasii, manifested with shortness of breath and a cavitary lung lesion seen on radiograph. Initial sputum smears were negative; however, after 2 weeks, the cultures grew M. kansasii and the patient was started on an antimycobacterial regimen.
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Affiliation(s)
- Randy R Moore
- Randy R. Moore practices in family medicine at Wellness Pointe Family Health in Longview, Tex., and is a major in the Texas Army National Guard. Douglas Holder is a radiologist at Red River Valley Radiology Associates and Open Imaging of Longview, Tex. Sarah Earnest is a family nurse practitioner at Special Health Resources in Longview, Tex. The authors have disclosed no potential conflicts of interest, financial or otherwise
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The Presence of Opportunistic Premise Plumbing Pathogens in Residential Buildings: A Literature Review. WATER 2022. [DOI: 10.3390/w14071129] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Opportunistic premise plumbing pathogens (OPPP) are microorganisms that are native to the plumbing environment and that present an emerging infectious disease problem. They share characteristics, such as disinfectant resistance, thermal tolerance, and biofilm formation. The colonisation of domestic water systems presents an elevated health risk for immune-compromised individuals who receive healthcare at home. The literature that has identified the previously described OPPPs (Aeromonas spp., Acinetobacter spp., Helicobacter spp., Legionella spp., Methylobacterium spp., Mycobacteria spp., Pseudomonas spp., and Stenotrophomonas spp.) in residential drinking water systems were systematically reviewed. By applying the Preferred reporting items for systematic reviews and meta-analyses guidelines, 214 studies were identified from the Scopus and Web of Science databases, which included 30 clinical case investigations. Tap components and showerheads were the most frequently identified sources of OPPPs. Sixty-four of these studies detected additional clinically relevant pathogens that are not classified as OPPPs in these reservoirs. There was considerable variation in the detection methods, which included traditional culturing and molecular approaches. These identified studies demonstrate that the current drinking water treatment methods are ineffective against many waterborne pathogens. It is critical that, as at-home healthcare services continue to be promoted, we understand the emergent risks that are posed by OPPPs in residential drinking water. Future research is needed in order to provide consistent data on the prevalence of OPPPs in residential water, and on the incidence of waterborne homecare-associated infections. This will enable the identification of the contributing risk factors, and the development of effective controls.
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Identification of Nontuberculous Mycobacteria in Drinking Water in Cali, Colombia. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18168451. [PMID: 34444201 PMCID: PMC8392123 DOI: 10.3390/ijerph18168451] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 08/03/2021] [Accepted: 08/05/2021] [Indexed: 11/29/2022]
Abstract
Nontuberculous mycobacteria (NTM) are ubiquitous microorganisms naturally resistant to antibiotics and disinfectants that can colonize drinking water supply systems. Information regarding the spread of NTM in specifically South America and Colombia is limited. We aimed to identify and characterize NTM present in tap water samples from Cali, Colombia. Drinking water samples and faucet biofilm swabs were collected in 18 places, including the city’s three main water treatment plants (WTPs). Filter-trapped material and eluates (0.45 μm) from swab washes were plated in 7H11 agar plates. Suspected colonies were evaluated microscopically, and NTM species were identified based on the rpoB gene. Antibiotic susceptibility testing was also performed. Fifty percent (9/18) of sampling points were positive for NTM (including two WTPs), from which 16 different isolates were identified: Mycobacterium mucogenicum (8/16), M. phocaicum (3/16), M. chelonae (2/16), M. mageritense (2/16), and M. fortuitum (1/16), all rapidly growing mycobacteria. A susceptibility profile was obtained from 68.75% (11/16) of the isolates. M. chelonae was the most resistant species. All NTM isolated are potentially responsible for human diseases; our findings might provide a baseline for exploring NTM transmission dynamics and clinical characterization, as well as potential associations between NTM species found in drinking water and isolates from patients.
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Niño-Padilla EI, Velazquez C, Garibay-Escobar A. Mycobacterial biofilms as players in human infections: a review. BIOFOULING 2021; 37:410-432. [PMID: 34024206 DOI: 10.1080/08927014.2021.1925886] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 04/18/2021] [Accepted: 04/28/2021] [Indexed: 06/12/2023]
Abstract
The role of biofilms in pathogenicity and treatment strategies is often neglected in mycobacterial infections. In recent years, the emergence of nontuberculous mycobacterial infections has necessitated the development of novel prophylactic strategies and elucidation of the mechanisms underlying the establishment of chronic infections. More importantly, the question arises whether members of the Mycobacterium tuberculosis complex can form biofilms and contribute to latent tuberculosis and drug resistance because of the long-lasting and recalcitrant nature of its infections. This review discusses some of the molecular mechanisms by which biofilms could play a role in infection or pathological events in humans.
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Affiliation(s)
| | - Carlos Velazquez
- Departamento de Ciencias Químico Biológicas, Universidad de Sonora, Hermosillo, Sonora, México
| | - Adriana Garibay-Escobar
- Departamento de Ciencias Químico Biológicas, Universidad de Sonora, Hermosillo, Sonora, México
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Aljishi A, Alwazzeh MJ, Kristjansson M. Pneumonia due to Mycobacterium cosmeticum in a renal transplant recipient. BMJ Case Rep 2021; 14:14/3/e234800. [PMID: 33653829 PMCID: PMC7929799 DOI: 10.1136/bcr-2020-234800] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
A 69-year-old man renal transplant recipient for 4 years, presented with 4-day history of cough and dyspnoea. He was diagnosed with community-acquired pneumonia and treated accordingly. He deteriorated requiring intensive care unit admission and intubation. Mycobacterial culture from bronchoalveolar lavage grew colonies within 7 days of incubation while Mycobacterium tuberculosis PCR was negative. The antibiotic regimen was adjusted to cover for rapidly growing mycobacteria with imipenem, amikacin and clarithromycin. The final culture reported Mycobacterium cosmeticum. He improved on the antibiotic regimen given which the organism turned to be sensitive to. We reported the second case with M. cosmeticum that fulfilled the diagnostic criteria for non-tuberculous mycobacterial lung infection. Improvement of patient’s lung infection on appropriate antibiotics points to a causal relationship.
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Affiliation(s)
- Ahmed Aljishi
- Department of Medicine, King Fahad Specialist Hospital, Dammam, Saudi Arabia
| | - Marwan Jabr Alwazzeh
- Department of Medicine, King Fahd Hospital of the University, Imam Abdulrahman Bin Faisal University, Al Khobar, Saudi Arabia
| | - Mar Kristjansson
- Department of Medicine, King Fahad Specialist Hospital, Dammam, Saudi Arabia
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Hernández-Jarguín AM, Martínez-Burnes J, Molina-Salinas GM, de la Cruz-Hernández NI, Palomares-Rangel JL, López Mayagoitia A, Barrios-García HB. Isolation and Histopathological Changes Associated with Non-Tuberculous Mycobacteria in Lymph Nodes Condemned at a Bovine Slaughterhouse. Vet Sci 2020; 7:vetsci7040172. [PMID: 33182568 PMCID: PMC7712099 DOI: 10.3390/vetsci7040172] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 11/04/2020] [Accepted: 11/08/2020] [Indexed: 01/11/2023] Open
Abstract
Background: non-tuberculous mycobacteria (NTM) infect humans and animals and have a critical confounding effect on the diagnosis of bovine tuberculosis. The Official Mexican Standard (Norma Oficial Mexicana, NOM-ZOO-031-1995) for food safety regulates Mycobacterium bovis in cattle, but not the NTM species. The study's objective was to isolate and identify the NTM present in condemned bovine lymph nodes in a slaughterhouse, characterize the histological lesions, and correlate bacteriological and microscopic findings with the antemortem tuberculin skin test. Methods: from 528 cattle, one or two pooled samples of lymph nodes from each animal were cultured for Mycobacteria spp. and processed for histopathology. Results: mycobacteria were isolated from 54/528 (10.2%) of the condemned lymph nodes; 25/54 (46.2%) of these isolates were NTM; 4 bacteriological cultures with fungal contamination were discarded. Granulomatous and pyogranulomatous inflammation were present in 6/21 (28.6%) and 7/21 (33.3%) of the NTM-positive lymph nodes, respectively. The species of NTM associated with granulomatous lymphadenitis were M. scrofulaceum, M. triviale, M. terrae, and M. szulgai, while those causing pyogranulomatous lesions were M. szulgai, M. kansasii, M. phlei, and M. scrofulaceum. Conclusions: the NTM infections can cause false-positive results in the tuberculin test because of cross immune reactivity and interference with the postmortem identification of M. bovis in cattle.
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Affiliation(s)
- Angélica M. Hernández-Jarguín
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Tamaulipas. Cd. Victoria, Tamaulipas C.P. 87000, Mexico; (J.M.-B.); (N.I.d.l.C.-H.); (J.L.P.-R.); (H.B.B.-G.)
- Correspondence:
| | - Julio Martínez-Burnes
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Tamaulipas. Cd. Victoria, Tamaulipas C.P. 87000, Mexico; (J.M.-B.); (N.I.d.l.C.-H.); (J.L.P.-R.); (H.B.B.-G.)
| | - Gloria M. Molina-Salinas
- Unidad de Investigación Médica Yucatán, Unidad Médica de Alta Especialidad Hospital de Especialidades 1 Mérida, Yucatán, Instituto Mexicano del Seguro Social, CP 97150, Mexico;
| | - Ned I. de la Cruz-Hernández
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Tamaulipas. Cd. Victoria, Tamaulipas C.P. 87000, Mexico; (J.M.-B.); (N.I.d.l.C.-H.); (J.L.P.-R.); (H.B.B.-G.)
| | - José L. Palomares-Rangel
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Tamaulipas. Cd. Victoria, Tamaulipas C.P. 87000, Mexico; (J.M.-B.); (N.I.d.l.C.-H.); (J.L.P.-R.); (H.B.B.-G.)
| | - Alfonso López Mayagoitia
- Department of Pathology & Microbiology, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, PE C1A4P3, Canada;
| | - Hugo B. Barrios-García
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Tamaulipas. Cd. Victoria, Tamaulipas C.P. 87000, Mexico; (J.M.-B.); (N.I.d.l.C.-H.); (J.L.P.-R.); (H.B.B.-G.)
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Lopez-Luis BA, Sifuentes-Osornio J, Pérez-Gutiérrez MT, Chávez-Mazari B, Bobadilla-Del-Valle M, Ponce-de-León A. Nontuberculous mycobacterial infection in a tertiary care center in Mexico, 2001-2017. Braz J Infect Dis 2020; 24:213-220. [PMID: 32428442 PMCID: PMC9392119 DOI: 10.1016/j.bjid.2020.04.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 04/06/2020] [Accepted: 04/17/2020] [Indexed: 11/02/2022] Open
Abstract
INTRODUCTION Nontuberculous mycobacteria (NTM) comprise several pathogens with a complex profile of virulence, diverse epidemiological and clinical patterns as well as host specificity. Recently, an increase in the number of NTM infections has been observed; therefore, the objective of this study was to evaluate the clinical characteristics and outcomes of these infections. METHODS We included patients with NTM infections between 2001-2017 and obtained risk factors, clinical features and outcomes; finally, we compared this data between slowly growing (SGM) and rapidly growing mycobacteria (RGM). RESULTS A total of 230 patients were evaluated, 158 (69%) infected and 72 (31%) colonized/pseudoinfected. The average annual incidence in the first 11 years of the study was 0.5 cases per 1000 admissions and increased to 2.0 cases per 1000 admissions later on. The distribution of NTM infections was as follows: bloodstream and disseminated disease 72 (45%), lung infection 67 (42%), skin and soft tissue infection 19 (12%). Mycobacterium avium complex was the most common isolate within SGM infections, and HIV-infected patients were the most affected. Within RGM infections, M. fortuitum was the most common isolate from patients with underlying conditions such as cancer, type-2 diabetes mellitus, presence of invasive devices, and use of immunosuppressive therapy. We did not find significant differences in deaths and persistent infections between disseminated SGM infection when compared to disseminated RGM infection (42% vs. 24%, p=0.22). However, disseminated SGM infection required a longer duration of therapy than disseminated RGM infection (median, 210 vs. 42 days, p=0.01). NTM lung disease showed no significant differences in outcomes among treated versus non-treated patients (p=0.27). CONCLUSIONS Our results show a significant increase in the number of Non-tuberculosis-mycobacteria infections in our setting. Patients with slow-growing-mycobacteria infections were mainly persons living with human immunodeficiency virus . Older patients with chronic diseases were common among those with rapidly-growing-mycobacteria infections. For non-tuberculosis-mycobacteria lung infection, antibiotic therapy should be carefully individualized.
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Affiliation(s)
- Bruno Ali Lopez-Luis
- Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Department of Infectious Diseases, Laboratory of Clinical Microbiology, Mexico City, Mexico
| | - José Sifuentes-Osornio
- Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Department of Infectious Diseases, Laboratory of Clinical Microbiology, Mexico City, Mexico
| | - María Teresa Pérez-Gutiérrez
- Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Department of Infectious Diseases, Laboratory of Clinical Microbiology, Mexico City, Mexico
| | - Bárbara Chávez-Mazari
- Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Department of Infectious Diseases, Laboratory of Clinical Microbiology, Mexico City, Mexico
| | - Miriam Bobadilla-Del-Valle
- Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Department of Infectious Diseases, Laboratory of Clinical Microbiology, Mexico City, Mexico
| | - Alfredo Ponce-de-León
- Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Department of Infectious Diseases, Laboratory of Clinical Microbiology, Mexico City, Mexico.
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Revisiting John Snow to Meet the Challenge of Nontuberculous Mycobacterial Lung Disease. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16214250. [PMID: 31683836 PMCID: PMC6862550 DOI: 10.3390/ijerph16214250] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 10/25/2019] [Accepted: 10/28/2019] [Indexed: 01/09/2023]
Abstract
Nontuberculous mycobacteria (NTM) are ubiquitous components of the soil and surface water microbiome. Disparities by sex, age, and geography demonstrate that both host and environmental factors are key determinants of NTM disease in populations, which predominates in the form of chronic pulmonary disease. As the incidence of NTM pulmonary disease rises across the United States, it becomes increasingly evident that addressing this emerging human health issue requires a bold, multi-disciplinary research framework that incorporates host risk factors for NTM pulmonary disease alongside the determinants of NTM residence in the environment. Such a framework should include the assessment of environmental characteristics promoting NTM growth in soil and surface water, detailed evaluations of water distribution systems, direct sampling of water sources for NTM contamination and species diversity, and studies of host and bacterial factors involved in NTM pathogenesis. This comprehensive approach can identify intervention points to interrupt the transmission of pathogenic NTM species from the environment to the susceptible host and to reduce NTM pulmonary disease incidence.
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Cerna-Cortes JF, Cortes-Cueto AL, Villegas-Martínez D, Leon-Montes N, Salas-Rangel LP, Rivera-Gutierrez S, Lopez-Hernandez D, Helguera-Repetto AC, Fernandez-Rendon E, Gonzalez-y-Merchand JA. Bacteriological quality of bottled water obtained from Mexico City small water purification plants: Incidence and identification of potentially pathogenic nontuberculous mycobacteria species. Int J Food Microbiol 2019; 306:108260. [DOI: 10.1016/j.ijfoodmicro.2019.108260] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 07/01/2019] [Accepted: 07/03/2019] [Indexed: 01/15/2023]
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Wee WY, Dutta A, Jayaraj J, Choo SW. Comparative genome sequencing and analyses of Mycobacterium cosmeticum reveal potential for biodesulfization of gasoline. PLoS One 2019; 14:e0214663. [PMID: 30964891 PMCID: PMC6456199 DOI: 10.1371/journal.pone.0214663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 03/18/2019] [Indexed: 11/18/2022] Open
Abstract
Mycobacterium cosmeticum is a nontuberculous Mycobacterium recovered from different water sources including household potable water and water collected at nail salon. Individual cases of this bacterium have been reported to be associated with gastrointestinal tract infections. Here we present the first whole-genome study and comparative analysis of two new clinically-derived Mycobacterium sp. UM_RHS (referred as UM_RHS after this) and Mycobacterium sp. UM_NYF (referred as UM_NYF after this) isolated from patients in Indonesia and Malaysia respectively to have a better understanding of the biological characteristic of these isolates. Both strains are likely Mycobacterium cosmeticum as supported by the evidence from molecular phylogenetic, comparative genomic and Average Nucleotide Identity (ANI) analyses. We found the presence of a considerably large number of putative virulence genes in the genomes of UM_RHS and UM_NYF. Interestingly, we also found a horizontally transferred genomic island carrying a putative dsz operon proposing that they may have potential to perform biodesulfization of dibenzothiophene (DBT) that may be effective in cost reduction and air pollution during fuel combustion. This comparative study may provide new insights into M. cosmeticum and serve as an important reference for future functional studies of this bacterial species.
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Affiliation(s)
- Wei Yee Wee
- Monash University Malaysia, School of Science, Bandar Sunway, Malaysia
| | - Avirup Dutta
- The Novo Nordisk Foundation Center for Basic Metabolic Research, Human Genomics and Metagenomics in Metabolism, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | | | - Siew Woh Choo
- Department of Biological Sciences, Xi’an Jiaotong-Liverpool University, Suzhou Dushu Lake Science and Education Innovation District, Suzhou Industrial Park, Suzhou, P. R. China
- Suzhou Genome Centre (SGC), Health Technologies University Research Centre (HT-URC), Xi’an Jiaotong-Liverpool University, Suzhou Dushu Lake Science and Education Innovation District, Suzhou Industrial Park, Suzhou, P. R. China
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Schiavano GF, De Santi M, Sisti M, Amagliani G, Brandi G. Disinfection of Mycobacterium avium subspecies hominissuis in drinking tap water using ultraviolet germicidal irradiation. ENVIRONMENTAL TECHNOLOGY 2018; 39:3221-3227. [PMID: 28862077 DOI: 10.1080/09593330.2017.1375028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 08/30/2017] [Indexed: 06/07/2023]
Abstract
Nontuberculous mycobacteria are resistant to conventional water treatments, and are opportunistic human pathogen, particularly in hospitalized patients. The aim of this investigation was to assess the effectiveness of an ultraviolet UV-C lamp treatment against Mycobacterium avium subspecies hominissuis in drinking tap water. Ultraviolet treatments (0-192 mJ/cm2) were performed using UV lamp immerged onto cylindrical glass tubes containing artificially contaminated water. The results showed that susceptibility to UV varied considerably according to the strains and the diameter of the tube. With a dose of 32 mJ/cm2, a significant inactivation (p < .05) of 3 log (99.9%) or more was obtained in only 5 of the 14 strains. To obtain a complete inactivation of all strains an irradiation of 192 mJ/cm2 was needed, a dose that is much higher than the limits recommended by the international standards for UV disinfection of drinking water. In conclusion, it may be difficult to standardize a UV dose for the elimination of waterborne mycobacteria.
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Affiliation(s)
- Giuditta Fiorella Schiavano
- a Department of Biomolecular Science, Toxicological, Hygiene and Environmental Sciences Unit , University of Urbino Carlo Bo , Urbino , PU , Italy
| | - Mauro De Santi
- a Department of Biomolecular Science, Toxicological, Hygiene and Environmental Sciences Unit , University of Urbino Carlo Bo , Urbino , PU , Italy
| | - Maurizio Sisti
- a Department of Biomolecular Science, Toxicological, Hygiene and Environmental Sciences Unit , University of Urbino Carlo Bo , Urbino , PU , Italy
| | - Giulia Amagliani
- a Department of Biomolecular Science, Toxicological, Hygiene and Environmental Sciences Unit , University of Urbino Carlo Bo , Urbino , PU , Italy
| | - Giorgio Brandi
- a Department of Biomolecular Science, Toxicological, Hygiene and Environmental Sciences Unit , University of Urbino Carlo Bo , Urbino , PU , Italy
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Honda JR, Virdi R, Chan ED. Global Environmental Nontuberculous Mycobacteria and Their Contemporaneous Man-Made and Natural Niches. Front Microbiol 2018; 9:2029. [PMID: 30214436 PMCID: PMC6125357 DOI: 10.3389/fmicb.2018.02029] [Citation(s) in RCA: 123] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 08/10/2018] [Indexed: 11/15/2022] Open
Abstract
Seminal microbiological work of environmental nontuberculous mycobacteria (NTM) includes the discovery that NTM inhabit water distribution systems and soil, and that the species of NTM found are geographically diverse. It is likely that patients acquire their infections from repeated exposures to their environments, based on the well-accepted paradigm that water and soil bioaerosols - enriched for NTM - can be inhaled into the lungs. Support comes from reports demonstrating NTM isolated from the lungs of patients are genetically identical to NTM found in their environment. Well documented sources of NTM include peat-rich soils, natural waters, drinking water, hot water heaters, refrigerator taps, catheters, and environmental amoeba. However, NTM have also been recovered in biofilms from ice machines, heated nebulizers, and heater-cooler units, as well as seat dust from theaters, vacuum cleaners, and cobwebs. New studies on the horizon aim to significantly expand the current knowledge of environmental NTM niches in order to improve our current understanding of the specific ecological factors driving the emergence of NTM lung disease. Specifically, the Hawaiian Island environment is currently being studied as a model to identify other point sources of exposure as it is the U.S. state with the highest number of NTM lung disease cases. Because of its geographic isolation and unique ecosystem, the Hawaiian environment is being probed for correlative factors that may promote environmental NTM colonization.
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Affiliation(s)
- Jennifer R. Honda
- Department of Biomedical Research and the Center for Genes, Environment, and Health, National Jewish Health, Denver, CO, United States
| | - Ravleen Virdi
- Department of Biomedical Research and the Center for Genes, Environment, and Health, National Jewish Health, Denver, CO, United States
| | - Edward D. Chan
- Medicine and Academic Affairs, National Jewish Health, Denver, CO, United States
- Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado Denver, Aurora, CO, United States
- Department of Medicine, Denver Veterans Affairs Medical Center, Denver, CO, United States
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Abstract
Mycobacterium porcinum is a rapidly growing environmental mycobacterium responsible for opportunistic infections. The 7,025,616-bp draft genome of M. porcinum strain CSURP1564 exhibits a 66.71% G+C content, 6,687 protein-coding genes, and 65 predicted RNA genes. In silico DNA-DNA hybridization confirms its assignment to the Mycobacterium fortuitum complex.
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Mishra PS, Narang P, Narang R, Goswami B, Mendiratta DK. Spatio-temporal study of environmental nontuberculous mycobacteria isolated from Wardha district in Central India. Antonie van Leeuwenhoek 2017; 111:73-87. [DOI: 10.1007/s10482-017-0927-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Accepted: 08/09/2017] [Indexed: 10/19/2022]
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Nishiuchi Y, Iwamoto T, Maruyama F. Infection Sources of a Common Non-tuberculous Mycobacterial Pathogen, Mycobacterium avium Complex. Front Med (Lausanne) 2017; 4:27. [PMID: 28326308 PMCID: PMC5339636 DOI: 10.3389/fmed.2017.00027] [Citation(s) in RCA: 112] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Accepted: 02/22/2017] [Indexed: 01/08/2023] Open
Abstract
Numerous studies have revealed a continuous increase in the worldwide incidence and prevalence of non-tuberculous mycobacteria (NTM) diseases, especially pulmonary Mycobacterium avium complex (MAC) diseases. Although it is not clear why NTM diseases have been increasing, one possibility is an increase of mycobacterial infection sources in the environment. Thus, in this review, we focused on the infection sources of pathogenic NTM, especially MAC. The environmental niches for MAC include water, soil, and dust. The formation of aerosols containing NTM arising from shower water, soil, and pool water implies that these niches can be infection sources. Furthermore, genotyping has shown that clinical isolates are identical to environmental ones from household tap water, bathrooms, potting soil, and garden soil. Therefore, to prevent and treat MAC diseases, it is essential to identify the infection sources for these organisms, because patients with these diseases often suffer from reinfections and recurrent infections with them. In the environmental sources, MAC and other NTM organisms can form biofilms, survive within amoebae, and exist in a free-living state. Mycobacterial communities are also likely to occur in these infection sources in households. Water distribution systems are a transmission route from natural water reservoirs to household tap water. Other infection sources include areas with frequent human contact, such as soil and bathrooms, indicating that individuals may carry NTM organisms that concomitantly attach to their household belongings. To explore the mechanisms associated with the global spread of infection and MAC transmission routes, an epidemiological population-wide genotyping survey would be very useful. A good example of the power of genotyping comes from M. avium subsp. hominissuis, where close genetic relatedness was found between isolates of it from European patients and pigs in Japan and Europe, implying global transmission of this bacterium. It is anticipated that whole genome sequencing technologies will improve NTM surveys so that the mechanisms for the global spread of MAC disease will become clearer in the near future. Better understanding of the niches exploited by MAC and its ecology is essential for preventing MAC infections and developing new methods for its effective treatment and elimination.
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Affiliation(s)
- Yukiko Nishiuchi
- Toneyama Institute for Tuberculosis Research, Osaka City University Medical School , Toyonaka , Japan
| | - Tomotada Iwamoto
- Department of Infectious Diseases, Kobe Institute of Health , Kobe , Japan
| | - Fumito Maruyama
- Section of Microbiology, Graduate School of Medicine and Faculty of Medicine, Kyoto University , Kyoto , Japan
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Nontuberculous Mycobacteria in Saudi Arabia and Gulf Countries: A Review. Can Respir J 2017; 2017:5035932. [PMID: 28348502 PMCID: PMC5350348 DOI: 10.1155/2017/5035932] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 01/05/2017] [Accepted: 02/01/2017] [Indexed: 01/15/2023] Open
Abstract
Nontuberculous Mycobacteria (NTM) are causing growing health problems worldwide. This is indicated by an increasing amount of scientific reports showing not only well-identified species reemerging but also emergence of new species. The emergence and reemergence of NTM are particularly worrying in developing countries due to scarce published data and improper identification. Here we aimed to examine the main epidemiological aspects and diagnostic challenges associated with NTM in countries of the Gulf Cooperation Council (GCC) and compare these findings to the international arena findings. Data revealed that countries of the GCC are largely dominated by rapidly growing mycobacteria species such as M. fortuitum (29%) and M. abscessus (17%) with high rate of definitive respiratory diseases. On the other hand, most of the developed countries are dominated by slowly growing mycobacteria such as MAC, M. kansasii, and M. gordonae. More efforts are needed, however, to gain insights into NTM issues in countries of the GCC.
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20
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Cerna-Cortes JF, Cortes-Cueto AL, Cano-Gaona MR, Leon-Montes N, Helguera-Repetto AC, Rivera-Gutierrez S, Salas-Rangel LP, Castro-Rosas J, Gonzalez-Y-Merchand JA. Microbiological Quality and Occurrence of Nontuberculous Mycobacteria in Fresh-Squeezed Orange Juice Samples Purchased from Street Vendors in Mexico City. J Food Prot 2016; 79:2190-2195. [PMID: 28221956 DOI: 10.4315/0362-028x.jfp-16-197] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Nontuberculous mycobacteria (NTM) are potentially pathogenic agents commonly found in a natural ecosystem. For this reason, food is considered another source of NTM transmission for humans. The aims of this study were to evaluate the microbiological quality and the occurrence of NTM in fresh-squeezed orange juice samples purchased from street vendors. All 102 samples analyzed were positive for aerobic mesophilic bacteria (AMB), with limits ranging from 1.8 to 6.2 log CFU/ml. A total of 55 (54%), 25 (25%), and 13 (13%) orange juice samples were positive for total coliforms (TC), fecal coliforms (FC), and Escherichia coli , respectively. TC, FC, and E. coli were present with limits ranging from <3 to >1,100 most probable number (MPN)/ml, <3 to 460 MPN/ml, and <3 to 11 MPN/ml, respectively. Six orange juice samples harbored NTM. These NTM were identified by using three molecular markers (hsp65, rrs, and rpoB genes) and corresponded to the fast-growing mycobacteria: Mycobacterium fortuitum (n = 3), Mycobacterium rhodesiae (n = 1), Mycobacterium obuense (n = 1), and a mixture of M. fortuitum and Mycobacterium mucogenicum in an additional sample (n = 1). No correlation was found between the presence NTM in orange juice samples with the presence and concentration of the indicator microorganisms (aerobic mesophilic bacteria, TC, and FC). Overall, these results suggest that fresh-squeezed orange juice might represent a vehicle for NTM transmission in humans. Therefore, prevention of contamination by humans (proper handling and washing of oranges) during juice preparation should be recommended.
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Affiliation(s)
- Jorge F Cerna-Cortes
- Departamento de Microbiologia, Escuela Nacional de Ciencias Biologicas-Instituto Politecnico Nacional, Prolongacion Carpio y Plan de Ayala S/N, Col. Casco de Santo Tomas, México, D.F., C.P. 11340, México
| | - Ana Laura Cortes-Cueto
- Departamento de Microbiologia, Escuela Nacional de Ciencias Biologicas-Instituto Politecnico Nacional, Prolongacion Carpio y Plan de Ayala S/N, Col. Casco de Santo Tomas, México, D.F., C.P. 11340, México
| | - Maria Rosalia Cano-Gaona
- Departamento de Microbiologia, Escuela Nacional de Ciencias Biologicas-Instituto Politecnico Nacional, Prolongacion Carpio y Plan de Ayala S/N, Col. Casco de Santo Tomas, México, D.F., C.P. 11340, México
| | - Nancy Leon-Montes
- Departamento de Microbiologia, Escuela Nacional de Ciencias Biologicas-Instituto Politecnico Nacional, Prolongacion Carpio y Plan de Ayala S/N, Col. Casco de Santo Tomas, México, D.F., C.P. 11340, México
| | - Addy C Helguera-Repetto
- Departamento de Inmunobioquimica, Torre de Investigación, Instituto Nacional de Perinatología Isidro Espinosa de los Reyes, Montes Urales 800, Colonia Lomas de Virreyes, México, D.F., C.P. 11000, Mexico
| | - Sandra Rivera-Gutierrez
- Departamento de Microbiologia, Escuela Nacional de Ciencias Biologicas-Instituto Politecnico Nacional, Prolongacion Carpio y Plan de Ayala S/N, Col. Casco de Santo Tomas, México, D.F., C.P. 11340, México
| | - Laura P Salas-Rangel
- Departamento de Microbiologia, Escuela Nacional de Ciencias Biologicas-Instituto Politecnico Nacional, Prolongacion Carpio y Plan de Ayala S/N, Col. Casco de Santo Tomas, México, D.F., C.P. 11340, México
| | - Javier Castro-Rosas
- Centro de Investigaciones Quimicas, Instituto de Ciencias Básicas e Ingenieria, Universidad Autonoma del Estado de Hidalgo, Centro Universitario, Carretera Pachuca-Tulancingo km 4.5, Mineral de la Reforma, Hidalgo, C.P. 42183, México
| | - Jorge A Gonzalez-Y-Merchand
- Departamento de Microbiologia, Escuela Nacional de Ciencias Biologicas-Instituto Politecnico Nacional, Prolongacion Carpio y Plan de Ayala S/N, Col. Casco de Santo Tomas, México, D.F., C.P. 11340, México
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Mougari F, Guglielmetti L, Raskine L, Sermet-Gaudelus I, Veziris N, Cambau E. Infections caused by Mycobacterium abscessus: epidemiology, diagnostic tools and treatment. Expert Rev Anti Infect Ther 2016; 14:1139-1154. [PMID: 27690688 DOI: 10.1080/14787210.2016.1238304] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Mycobacterium abscessus is an emerging mycobacteria that is responsible for lung diseases and healthcare-associated extrapulmonary infections. Recent findings support its taxonomic status as a single species comprising 3 subspecies designated abscessus, bolletii and massiliense. We performed a review of English-language publications investigating all three of these subspecies. Areas covered: Worldwide, human infections are often attributable to environmental contamination, although the isolation of M. abscessus in this reservoir is very rare. Basic research has demonstrated an association between virulence and cell wall components and cording, and genome analysis has identified gene transfer from other bacteria. The bacteriological diagnosis of M. abscessus is based on innovative tools combining molecular biology and mass spectrometry. Genotypic and phenotypic susceptibility testing are required to predict the success of macrolide (clarithromycin or azithromycin)-based therapeutic regimens. Genotyping methods are helpful to assess relapse and cross-transmission and to search for a common source. Treatment is not standardised, and outcomes are often unsatisfactory. Expert commentary: M. abscessus is still an open field in terms of clinical and bacteriological research. Further knowledge of its ecology and transmission routes, as well as host-pathogen interactions, is required. Because the number of human cases is increasing, it is also necessary to identify more active treatments and perform clinical trials to assess standard effective regimens.
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Affiliation(s)
- Faiza Mougari
- a Centre National de Référence des Mycobactéries et Résistance des Mycobactéries aux Antituberculeux (CNR-MyRMA) , Assistance publique-Hôpitaux de Paris (APHP) , Paris , France.,b AP-HP, Hôpital Lariboisière-Fernand Widal , Service de Bactériologie , Paris , France.,c IAME, UMR 1137, INSERM , Université Paris Diderot, Sorbonne Paris Cité , Paris , France
| | - Lorenzo Guglielmetti
- a Centre National de Référence des Mycobactéries et Résistance des Mycobactéries aux Antituberculeux (CNR-MyRMA) , Assistance publique-Hôpitaux de Paris (APHP) , Paris , France.,b AP-HP, Hôpital Lariboisière-Fernand Widal , Service de Bactériologie , Paris , France.,d Sorbonne Universités, UPMC Université Paris 06, CR7, Centre d'Immunologie et des Maladies Infectieuses, CIMI, team E13 (Bacteriology) , Paris , France.,e INSERM, U1135, Centre d'Immunologie et des Maladies Infectieuses, CIMI, team E13 (Bacteriology) , Paris , France
| | - Laurent Raskine
- a Centre National de Référence des Mycobactéries et Résistance des Mycobactéries aux Antituberculeux (CNR-MyRMA) , Assistance publique-Hôpitaux de Paris (APHP) , Paris , France.,b AP-HP, Hôpital Lariboisière-Fernand Widal , Service de Bactériologie , Paris , France
| | - Isabelle Sermet-Gaudelus
- f AP-HP, Groupe Hospitalier Necker-Enfants Malades , Centre de Ressources et de Compétences pour la Mucoviscidose (CRCM) et Centre de Formation de Traitement à Domicile Chez l'Enfant (CFTDE) , Paris , France
| | - Nicolas Veziris
- a Centre National de Référence des Mycobactéries et Résistance des Mycobactéries aux Antituberculeux (CNR-MyRMA) , Assistance publique-Hôpitaux de Paris (APHP) , Paris , France.,d Sorbonne Universités, UPMC Université Paris 06, CR7, Centre d'Immunologie et des Maladies Infectieuses, CIMI, team E13 (Bacteriology) , Paris , France.,e INSERM, U1135, Centre d'Immunologie et des Maladies Infectieuses, CIMI, team E13 (Bacteriology) , Paris , France.,g AP-HP, Hôpital Pitié-Salpêtrière , Laboratory of Bacteriology , Paris , France
| | - Emmanuelle Cambau
- a Centre National de Référence des Mycobactéries et Résistance des Mycobactéries aux Antituberculeux (CNR-MyRMA) , Assistance publique-Hôpitaux de Paris (APHP) , Paris , France.,b AP-HP, Hôpital Lariboisière-Fernand Widal , Service de Bactériologie , Paris , France.,c IAME, UMR 1137, INSERM , Université Paris Diderot, Sorbonne Paris Cité , Paris , France
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Mohajeri P, Yazdani L, Shahraki AH, Alvandi A, Atashi S, Farahani A, Almasi A, Rezaei M. Verification of Frequency in Species of Nontuberculous Mycobacteria in Kermanshah Drinking Water Supplies Using the PCR-Sequencing Method. Microb Drug Resist 2016; 23:359-364. [PMID: 27668545 DOI: 10.1089/mdr.2016.0064] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Nontuberculous mycobacteria are habitants of environment, especially in aquatic systems. Some of them cause problems in immunodeficient patients. Over the last decade, 16S rRNA gene sequencing was established in 45 novel species of nontuberculous mycobacteria. Experiences revealed that this method underestimates the diversity, but does not distinguish between some of mycobacterium subsp. To recognize emerging rapidly growing mycobacteria and identify their subsp, rpoB gene sequencing has been developed. OBJECTIVES To better understand the transmission of nontuberculous mycobacterial species from drinking water and preventing the spread of illness with these bacteria, the aim of this study was to detect the presence of bacteria by PCR-sequencing techniques. MATERIALS AND METHODS Drinking water samples were collected from different areas of Kermanshah city in west of IRAN. After decontamination with cetylpyridinium chloride, samples were filtered with 0.45-micron filters, the filter transferred directly on growth medium waiting to appear in colonies, then DNA extraction and PCR were performed, and products were sent to sequencing. RESULTS We found 35/110 (32%) nontuberculous mycobacterial species in drinking water samples, isolates included Mycobacterium goodii, Mycobacterium aurum, and Mycobacterium gastri with the most abundance (11.5%), followed by Mycobacterium smegmatis, Mycobacterium porcinum, Mycobacterium peregrinum, Mycobacterium mucogenicum, and Mycobacterium chelonae (8%). CONCLUSIONS In this study, we recognized the evidence of contamination by nontuberculous mycobacteria in corroded water pipes. As a result of the high prevalence of these bacteria in drinking water in Kermanshah, this is important evidence of transmission through drinking water. This finding can also help public health policy makers control these isolates in drinking water supplies in Kermanshah.
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Affiliation(s)
- Parviz Mohajeri
- 1 Department of Microbiology, School of Medicine, Kermanshah University of Medical Sciences , Kermanshah, Iran
| | - Laya Yazdani
- 1 Department of Microbiology, School of Medicine, Kermanshah University of Medical Sciences , Kermanshah, Iran
| | | | - Amirhoshang Alvandi
- 1 Department of Microbiology, School of Medicine, Kermanshah University of Medical Sciences , Kermanshah, Iran
| | - Sara Atashi
- 3 West Tuberculosis Center, Kermanshah University of Medical Sciences , Kermanshah, Iran
| | - Abbas Farahani
- 4 Department of Microbiology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences , Ahvaz, Iran
| | - Ali Almasi
- 5 Department of Environmental Health, Public Health College, Kermanshah University of Medical Sciences , Kermanshah, Iran
| | - Mansour Rezaei
- 6 Department of Biostatistics, Faculty of Medicine, Kermanshah University of Medical Sciences , Kermanshah, Iran
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Phelippeau M, Aboubaker Osman D, Musso D, Drancourt M. Epidemiology of Nontuberculous Mycobacteria in French Polynesia. J Clin Microbiol 2015; 53:3798-804. [PMID: 26400787 PMCID: PMC4652114 DOI: 10.1128/jcm.01560-15] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 09/16/2015] [Indexed: 11/20/2022] Open
Abstract
As few data are available in the Pacific countries and territories of the Oceania region regarding nontuberculous mycobacteria,we retrospectively identified 87 such isolates from French Polynesia from 2008 to 2013 by hybridization using DNA-strip, matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) and partial rpoB gene sequencing. Partial rpoB gene sequencing classified 42/87 (48.3%) isolates in the Mycobacterium fortuitum complex, 28 (32.2%) in the Mycobacterium abscessus complex, 8 (9.2%) in the Mycobacterium mucogenicum complex, and 5 (5.7%) in the Mycobacterium avium complex. Two isolates were identified as Mycobacterium acapulcensis and Mycobacterium cosmeticum by partial 16S rRNA gene sequencing. One isolate, unidentified by MALDI-TOF MS and yielding less than 92% and 96% sequence similarity with rpoB and hsp65 reference sequences, respectively, was regarded as a potentially new species. Samples from three patients exhibiting>2 Mycobacterium porcinum isolates and from one patient with emphysema and a lung abscess exhibiting 2 Mycobacterium senegalense isolates fulfilled the American Thoracic Society microbiological criteria for nontuberculous mycobacterial lung infection.Remote geographic areas, such as French Polynesia, are potential sources for the discovery of new mycobacterial species.
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MESH Headings
- Adult
- Aged
- Bacterial Proteins/genetics
- Chaperonin 60/genetics
- Cluster Analysis
- DNA, Bacterial/chemistry
- DNA, Bacterial/genetics
- DNA, Ribosomal/chemistry
- DNA, Ribosomal/genetics
- DNA-Directed RNA Polymerases/genetics
- Female
- Humans
- Male
- Middle Aged
- Mycobacterium Infections, Nontuberculous/epidemiology
- Mycobacterium Infections, Nontuberculous/microbiology
- Nontuberculous Mycobacteria/classification
- Nontuberculous Mycobacteria/isolation & purification
- Nucleic Acid Hybridization
- Phylogeny
- Polynesia/epidemiology
- RNA, Ribosomal, 16S/genetics
- Retrospective Studies
- Sequence Analysis, DNA
- Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
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Affiliation(s)
- Michael Phelippeau
- Aix-Marseille Université, URMITE, UMR CNRS 7278, IRD 198, Inserm 1095, Marseille, France
| | | | - Didier Musso
- Pôle de recherche et de veille sur les maladies infectieuses émergentes, Institut Louis Malardé, Tahiti, French Polynesia
| | - Michel Drancourt
- Aix-Marseille Université, URMITE, UMR CNRS 7278, IRD 198, Inserm 1095, Marseille, France
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Lecuona M, Abreu R, Rodríguez-Álvarez C, Castro B, Campos S, Hernández-Porto M, Mendoza P, Arias A. First isolation of Mycobacterium canariasense from municipal water supplies in Tenerife, Canary Islands, Spain. Int J Hyg Environ Health 2015; 219:48-52. [PMID: 26324115 DOI: 10.1016/j.ijheh.2015.08.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 08/16/2015] [Accepted: 08/17/2015] [Indexed: 01/13/2023]
Abstract
BACKGROUND Nontuberculous mycobacteria (NTM) are common bacteria in water and especially water supply distribution systems. Some species can cause infections, especially in immunocompromised patients and other risk groups. This study examined the frequency of occurrence of NTM in 135 household potable water samples collected from household water taps in Tenerife Island. METHODS Mycobacteria species were identified by polymerase chain reaction targeting the 16S rRNA and 16S-23S rRNA regions, and by double-reverse hybridization on a dipstick using colloidal gold-bound and membrane-bound probes (Speed-Oligo(®) Mycobacteria). Some species were identified by sequencing the gene that encodes the 16S rRNA region. RESULTS NTM were present in 47.4% of the samples. Mycobacterium fortuitum was the NTM isolated most frequently (70.3%), followed by Mycobacterium canariasense (6.3%) and Mycobacterium chelonae (6.3%). Other species were isolated at lower percentage frequencies. CONCLUSION We isolated and identified the species M. canariasense in water supplies for public consumption. This species has previously been reported only in hospital settings. The elevated presence of NTM in the water supply indicates that it may be a reservoir for infections caused by recently described species of mycobacteria.
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Affiliation(s)
- María Lecuona
- University Hospital of Canary Islands, Tenerife, Ofra, s/n 38320, San Cristóbal de La Laguna, Canary Islands, Spain; Preventive Medicine and Public Health, University of La Laguna, Santa Cruz de Tenerife 38071, Canary Islands, Spain
| | - Rossana Abreu
- University Hospital of Canary Islands, Tenerife, Ofra, s/n 38320, San Cristóbal de La Laguna, Canary Islands, Spain; Preventive Medicine and Public Health, University of La Laguna, Santa Cruz de Tenerife 38071, Canary Islands, Spain
| | | | - Beatriz Castro
- University Hospital of Canary Islands, Tenerife, Ofra, s/n 38320, San Cristóbal de La Laguna, Canary Islands, Spain
| | - Silvia Campos
- University Hospital of Canary Islands, Tenerife, Ofra, s/n 38320, San Cristóbal de La Laguna, Canary Islands, Spain
| | - Miriam Hernández-Porto
- University Hospital of Canary Islands, Tenerife, Ofra, s/n 38320, San Cristóbal de La Laguna, Canary Islands, Spain
| | - Pablo Mendoza
- Vircell S.L. Molecular Diagnostic Department, The Technology Park of Health Sciences, Granada, Spain
| | - Angeles Arias
- Preventive Medicine and Public Health, University of La Laguna, Santa Cruz de Tenerife 38071, Canary Islands, Spain.
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Microbiological Quality of Ready-to-Eat Vegetables Collected in Mexico City: Occurrence of Aerobic-Mesophilic Bacteria, Fecal Coliforms, and Potentially Pathogenic Nontuberculous Mycobacteria. BIOMED RESEARCH INTERNATIONAL 2015; 2015:789508. [PMID: 25918721 PMCID: PMC4396000 DOI: 10.1155/2015/789508] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Accepted: 09/24/2014] [Indexed: 01/08/2023]
Abstract
The aims of this study were to evaluate the microbiological quality and the occurrence of nontuberculous mycobacteria (NTM) in a variety of salads and sprouts from supermarkets and street vendors in Mexico City. Aerobic-mesophilic bacteria (AMB) were present in 100% of RTE-salads samples; 59% of samples were outside guidelines range (>5.17 log10 CFU per g). Although fecal coliforms (FC) were present in 32% of samples, only 8% of them exceeded the permissible limit (100 MPN/g). Regarding the 100 RTE-sprouts, all samples were also positive for AMB and total coliforms (TC) and 69% for FC. Seven NTM species were recovered from 7 salad samples; they included three M. fortuitum, two M. chelonae, one M. mucogenicum, and one M. sp. Twelve RTE-sprouts samples harbored NTM, which were identified as M. porcinum (five), M. abscessus (two), M. gordonae (two), M. mucogenicum (two), and M. avium complex (one). Most RTE-salads and RTE-sprouts had unsatisfactory microbiological quality and some harbored NTM associated with illness. No correlation between the presence of coliforms and NTM was found. Overall, these results suggest that RTE-salads and RTE-sprouts might function as vehicles for NTM transmission in humans; hence, proper handling and treatment before consumption of such products might be recommendable.
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Draft Genome Sequence of Mycobacterium cosmeticum DSM 44829. GENOME ANNOUNCEMENTS 2014; 2:2/2/e00315-14. [PMID: 24723727 PMCID: PMC3983316 DOI: 10.1128/genomea.00315-14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
ABSTRACT
We announce the draft genome sequence of
Mycobacterium cosmeticum
strain DSM 44829, a nontuberculous species responsible for opportunistic infection. The genome described here is composed of 6,462,090 bp, with a G+C content of 68.24%. It contains 6,281 protein-coding genes and 75 predicted RNA genes.
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