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Chaptal M, Andrejak C, Bonifay T, Beillard E, Guillot G, Guyomard-Rabenirina S, Demar M, Trombert-Paolantoni S, Jacomo V, Mosnier E, Veziris N, Djossou F, Epelboin L. Epidemiology of infection by pulmonary non-tuberculous mycobacteria in French Guiana 2008–2018. PLoS Negl Trop Dis 2022; 16:e0010693. [PMID: 36084148 PMCID: PMC9491559 DOI: 10.1371/journal.pntd.0010693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 09/21/2022] [Accepted: 07/22/2022] [Indexed: 11/19/2022] Open
Abstract
Introduction Unlike diseases caused by Mycobacterium tuberculosis, M. leprae and M. ulcerans, the epidemiology of pulmonary non-tuberculous mycobacteria (PNTM) has not received due attention in French Guiana. The main objective of the current study was to define the incidence of these PNTM infections: NTM pulmonary diseases (NTM-PD) and casual PNTM isolation (responsible of latent infection or simple colonization). The secondary objectives were to determine species diversity and geographic distribution of these atypical mycobacteria. Methods A retrospective observational study (2008–2018) of French Guiana patients with at least one PNTM positive respiratory sample in culture was conducted. Patients were then classified into two groups: casual PNTM isolation or pulmonary disease (NTM-PD), according to clinical, radiological and microbiological criteria defined by the American Thoracic Society / Infectious Disease Society of America (ATS / IDSA) in 2007. Results 178 patients were included, out of which 147 had casual PNTM isolation and 31 had NTM-PD. Estimated annual incidence rate of respiratory isolates was 6.17 / 100,000 inhabitants per year while that of NTM-PD was 1.07 / 100,000 inhabitants per year. Among the 178 patients, M. avium complex (MAC) was the most frequently isolated pathogen (38%), followed by M. fortuitum then M. abscessus (19% and 6% of cases respectively), the latter two mycobacteria being mainly found in the coastal center region. Concerning NTM-PD, two species were mainly involved: MAC (81%) and M. abscessus (16%). Discussion/Conclusion This is the first study on the epidemiology of PNTM infections in French Guiana. PNTM’s incidence looks similar to other contries and metropolitan France and NTM-PD is mostly due to MAC and M.abscessus. Although French Guiana is the French territory with the highest tuberculosis incidence, NTM should not be overlooked.
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Affiliation(s)
- Milène Chaptal
- Tropical and Infectious Diseases Department, Andrée Rosemon Hospital, Cayenne, French Guiana
- Pneumology Department, University Hospital of Guadeloupe, Pointe-à-Pitre, France
- * E-mail:
| | | | - Timothée Bonifay
- Penitentiary ambulatory care and consultation unit, Andrée Rosemon Hospital, Cayenne, French Guiana
| | | | - Geneviève Guillot
- Medical Department, Andrée Rosemon Hospital, Cayenne, Guyane française
| | | | - Magalie Demar
- Laboratory, Andrée Rosemon Hospital, Cayenne, French Guiana
| | | | | | - Emilie Mosnier
- Tropical and Infectious Diseases Department, Andrée Rosemon Hospital, Cayenne, French Guiana
| | - Nicolas Veziris
- Sorbonne Université, INSERM U1135, Centre d’Immunologie et des Maladies Infectieuses (CIMI-Paris), Centre National de Référence des Mycobactéries et de la Résistance des Mycobactéries aux Antituberculeux, Département de Bactériologie, Groupe hospitalier APHP, Sorbonne Université, Site Saint-Antoine, Paris, France
| | - Felix Djossou
- Tropical and Infectious Diseases Department, Andrée Rosemon Hospital, Cayenne, French Guiana
| | - Loïc Epelboin
- Tropical and Infectious Diseases Department, Andrée Rosemon Hospital, Cayenne, French Guiana
- Centre d’investigation Clinique INSERM 1424, Centre Hospitalier de Cayenne, Andrée Rosemon, Cayenne, French Guiana
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Oudah M, Sabath BF. Spontaneous resolution of Mycobacterium kansasii presenting as a spiculated lung mass. Respir Med Case Rep 2021; 34:101512. [PMID: 34522604 PMCID: PMC8427316 DOI: 10.1016/j.rmcr.2021.101512] [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: 08/20/2021] [Accepted: 09/04/2021] [Indexed: 11/07/2022] Open
Abstract
A 68-year old woman with a long smoking history underwent lung cancer screening by low-dose computed tomography. This detected a 3.0 cm spiculated mass in the left upper lobe. Transbronchial biopsy revealed necrotizing granulomatous inflammation and cultures grew Mycobacterium kansasii. Given lack of symptoms and concerns over drug toxicity, the patient declined antimicrobial therapy and she was monitored radiographically. Serial CT scans at six and twenty-two months showed progressive resolution of the mass. We present the first report of Mycobacterium kansasii presenting as a solitary lung nodule that spontaneously resolved without treatment.
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Affiliation(s)
- Marwa Oudah
- Department of Internal Medicine, Greater Baltimore Medical Center, Baltimore, MD, USA
| | - Bruce F Sabath
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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Chen C, Lu J, Long B, Rao Z, Gao Y, Wang W, Gao W, Yang J, Zhang S. Detection of Mycobacterium kansasii using a combination of loop-mediated isothermal amplification (LAMP) and lateral flow biosensors. Int Microbiol 2020; 24:75-82. [PMID: 32880033 PMCID: PMC7872997 DOI: 10.1007/s10123-020-00143-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 08/09/2020] [Accepted: 08/28/2020] [Indexed: 12/17/2022]
Abstract
Mycobacterium kansasii is an opportunistic pathogen that causes both intrapulmonary and extrapulmonary infections. The symptoms of the pulmonary diseases caused by M. kansasii closely resemble Mycobacterium tuberculosis. Rapid and accurate differentiation of M. kansasii from M. tuberculosis, as well as other mycobacteria, is crucial for developing effective therapeutics and disease treatment. In this study, we combined loop-mediated isothermal amplification (LAMP) with lateral flow biosensors (LFB) to detect M. kansasii, by targeting the species-specific sequence of rpoB, a gene which encodes the β subunit of bacterial RNA polymerase. The assay was validated to ensure that it was highly selective by testing M. kansasii, M. tuberculosis, other species of respiratory bacteria, and other nontuberculous mycobacteria. The detection limit of the assay was 1 fg/μL of DNA and 50 CFU of bacilli in sputum. The M. kansasii-LAMP-LFB assay is a fast, cheap, and accurate method for detecting M. kansasii by constant temperature amplification and simple interpretation.
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Affiliation(s)
- Chuang Chen
- Sichuan Center for Disease Control and Prevention, Chengdu, 610041, Sichuan Province, China
| | - Jia Lu
- Sichuan Center for Disease Control and Prevention, Chengdu, 610041, Sichuan Province, China
| | - Bo Long
- Sichuan Center for Disease Control and Prevention, Chengdu, 610041, Sichuan Province, China
| | - Zhengyuan Rao
- Sichuan Center for Disease Control and Prevention, Chengdu, 610041, Sichuan Province, China
| | - Yuan Gao
- Sichuan Center for Disease Control and Prevention, Chengdu, 610041, Sichuan Province, China
| | - Weina Wang
- Sichuan Center for Disease Control and Prevention, Chengdu, 610041, Sichuan Province, China
| | - Wenfeng Gao
- Sichuan Center for Disease Control and Prevention, Chengdu, 610041, Sichuan Province, China
| | - Jun Yang
- Sichuan Center for Disease Control and Prevention, Chengdu, 610041, Sichuan Province, China
| | - Shu Zhang
- Sichuan Center for Disease Control and Prevention, Chengdu, 610041, Sichuan Province, China.
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Moon P, Guillaumin E, Chan ED. Non-tuberculous mycobacterial lung disease due to multiple "minor" risk factors: an illustrative case and a review of these "lesser elements". J Thorac Dis 2020; 12:4960-4972. [PMID: 33145070 PMCID: PMC7578471 DOI: 10.21037/jtd-20-986] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
| | | | - Edward D Chan
- Department of Academic Affairs, National Jewish Health, Denver, CO, USA.,Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.,Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, CO, USA
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