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Ndanga MED, Abdul JBPAA, Edoa JR, Ibinda GARM, Adegbite BR, Mevyann RC, Biyogho CM, Mahoumbou J, Manguinga S, Roguet NM, Lell B, Kremsner PG, Alabi AS, Grobusch MP, Adegnika AA. Species identification and drug susceptibility testing of non-tuberculous mycobacteria by Line Probe Assay in Lambaréné, Gabon-a cross-sectional study. BMC Infect Dis 2023; 23:651. [PMID: 37789292 PMCID: PMC10548664 DOI: 10.1186/s12879-023-08617-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Accepted: 09/18/2023] [Indexed: 10/05/2023] Open
Abstract
BACKGROUND Non-tuberculous mycobacteria (NTM) are a group of bacteria that cause rare lung infections and are increasingly recognized as causative agents of opportunistic and device-associated infections in humans. In Gabon, there is a lack of data on NTM species identification and drug susceptibility. The aim of this study was to identify the frequency of NTM species and their genotypic susceptibility pattern to commonly used antibiotics for NTM infections in Gabon. METHODS A cross-sectional study was conducted at the CERMEL TB laboratory from January 2020 to December 2022, NTM subspecies identification and drug susceptibility testing to macrolides and aminoglycosides were performed using the genotype NTM-DR kit. RESULTS The study found that out of 524 culture-positive specimens, 146 (28%) were NTM, with the predominant group being Mycobacterium avium complex (MAC) and Mycobacterium abscessus complex (MABC). All MAC isolates were fully susceptible to macrolides and aminoglycosides, while five MABC isolates carried mutations indicative of reduced susceptibility to macrolide and aminoglycoside drugs. CONCLUSIONS These findings suggest that clinicians may use macrolides and aminoglycosides to manage NTM infections caused by MAC, but further investigation is required to determine MABC drug susceptibility.
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Affiliation(s)
- Micheska Epola Dibamba Ndanga
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
- Ecole Doctorale d'infectiologie Tropicale de Franceville, Franceville, Gabon
| | | | - Jean Ronald Edoa
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
| | | | - Bayodé Romeo Adegbite
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
- Center of Tropical Medicine and Travel Medicine, Department of Infectious Diseases, Amsterdam University Medical Centers, Location University of Amsterdam, Amsterdam Infection & Immunity, Amsterdam Public Health, University of Amsterdam, Amsterdam, The Netherlands
| | | | | | - Jocelyn Mahoumbou
- Programme National de Lutte Contre La Tuberculose, Libreville, Gabon
| | | | | | - Bertrand Lell
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
- Department of Medicine I, Division of Infectious Diseases and Tropical Medicine, Medical University of Vienna, Vienna, Austria
| | - Peter Gottfried Kremsner
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
- German Center for Infection Research, Tübingen, Germany
- Institut Für Tropenmedizin, Universität Tübingen, Tübingen, Germany
| | - Abraham Sunday Alabi
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
- Health Focus GmbH, Potsdam, Germany
| | - Martin Peter Grobusch
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon.
- Center of Tropical Medicine and Travel Medicine, Department of Infectious Diseases, Amsterdam University Medical Centers, Location University of Amsterdam, Amsterdam Infection & Immunity, Amsterdam Public Health, University of Amsterdam, Amsterdam, The Netherlands.
- Institut Für Tropenmedizin, Universität Tübingen, Tübingen, Germany.
- Masanga Medical Research Unit (MMRU), Masanga, Sierra Leone.
- Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Cape Town, South Africa.
| | - Ayola Akim Adegnika
- Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
- German Center for Infection Research, Tübingen, Germany
- Institut Für Tropenmedizin, Universität Tübingen, Tübingen, Germany
- Fondation Pour La Recherche Scientifique, Cotonou, Bénin
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
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Epola Dibamba Ndanga M, Babatundé Pacome Achimi Agbo Abdul J, Ronald Edoa J, Chester Mevyann R, Romeo Adegbite B, Mfoumbi A, Mebiame Biyogho C, Beh Mba R, Mahoumbou J, McCall MBB, Peter Grobusch M, Akim Adegnika A, Sunday Alabi A. Non-tuberculous mycobacteria isolation from presumptive tuberculosis patients in Lambaréné, Gabon. Trop Med Int Health 2022; 27:438-444. [PMID: 35167171 DOI: 10.1111/tmi.13736] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE The prevalence of clinical cases of pulmonary non-tuberculous mycobacteria (NTM) is increasing worldwide. The aim of this study was to determine the proportion and the NTM species isolated from presumptive tuberculosis patients in Lambaréné, Gabon. METHOD From January 2018 to December 2020, sputum samples from presumptive TB patients were analysed at the tuberculosis reference laboratory of the Centre de Recherches Médicales de Lambaréné. Two sputum samples were collected per patient, and culture was performed using Bactec MGIT 960. The GenoType Mycobacterium CM/AS was used for NTM isolates confirmation and species differentiation. RESULTS Among 1363 sputum samples analysed, 285 (20.9%) were Auramin acid fast bacilli (AFB) smear-positive. NTM were isolated in 137/1363 (10%) of the samples. The most prevalent NTM species was Mycobacterium intracellulare (n=74; 54%). CONCLUSION These results show the presence of NTM among presumptive TB patients in Gabon, which could potentially complicate TB diagnosis. This presents a new public health challenge, and emphasises the need to consider NTM in planning the prevention and management of tuberculosis control.
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Affiliation(s)
| | | | | | | | - Bayodé Romeo Adegbite
- Centre de Recherches Médicales de Lambaréné, Lambaréné, Gabon.,Center of Tropical Medicine and Travel Medicine, Amsterdam University Medical Centers, University of Amsterdam, The Netherlands
| | - Arnaut Mfoumbi
- Centre de Recherches Médicales de Lambaréné, Lambaréné, Gabon
| | | | - Romual Beh Mba
- Centre de Recherches Médicales de Lambaréné, Lambaréné, Gabon
| | - Jocelyn Mahoumbou
- Programme National de Lutte contre la Tuberculose, Libreville, Gabon
| | - Matthew B B McCall
- Centre de Recherches Médicales de Lambaréné, Lambaréné, Gabon.,Department of Medical Microbiology, Radboud University Medical Centre, Nijmegen, The Netherlands.,Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany
| | - Martin Peter Grobusch
- Centre de Recherches Médicales de Lambaréné, Lambaréné, Gabon.,Center of Tropical Medicine and Travel Medicine, Amsterdam University Medical Centers, University of Amsterdam, The Netherlands.,Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany
| | - Ayola Akim Adegnika
- Centre de Recherches Médicales de Lambaréné, Lambaréné, Gabon.,Programme National de Lutte contre la Tuberculose, Libreville, Gabon.,Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany.,German Center for Infection Research, Tübingen, Germany.,Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands.,Fondation pour la Recherche Scientifique, Cotonou, Bénin
| | - Abraham Sunday Alabi
- Centre de Recherches Médicales de Lambaréné, Lambaréné, Gabon.,Health Focus GmbH, Potsdam, Germany
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