{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,27]],"date-time":"2026-09-27T15:30:12Z","timestamp":1790523012781,"version":"4.1.0"},"reference-count":41,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2022,6,28]],"date-time":"2022-06-28T00:00:00Z","timestamp":1656374400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100009553","name":"Czech Health Research Council","doi-asserted-by":"publisher","award":["NU20-09-00114"],"award-info":[{"award-number":["NU20-09-00114"]}],"id":[{"id":"10.13039\/501100009553","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Antibiotics"],"abstract":"<jats:p>Mycobacterioses are less frequently occurring but serious diseases. In recent years, at a global level, the incidence of mycobacterioses induced by the rapidly growing species Mycobacterium abscessus (M. a.), which is considered to be the most resistant to antibiotics and most difficult to treat, has been on the rise. Correct identification to the level of the subspecies (M. a. abscessus, M. a. massiliense, and M. a. bolletii) and determination of its sensitivity to macrolides, which are the basis of combination therapy, are of principal importance for the management of the disease. We describe five cases of mycobacterioses caused by M. a., where the sequencing of select genes was performed to identify the individual subspecies and antibiotic resistance. The analysis of the rpoB gene showed two isolates each of M. a. abscessus and M. a. massiliense and one isolate of M. a. bolletii. The complete (full length) erm(41) gene responsible for the development of inducible resistance to macrolides was demonstrated in both M. a. abscessus and M. a. bolletii isolates. A partially deleted and non-functional erm(41) gene was demonstrated in M. a. massiliense isolates. The subsequent sequencing of the full length erm(41) gene products showed, however, the mutation (T28\u2192C) in both isolates of M. a. abscessus, causing a loss of the function and preserved sensitivity to macrolides. The antibiotic sensitivity testing confirmed that both the isolates of M. a. abscessus and M. a. massiliense were sensitive to clarithromycin even after prolonged 14-day incubation. The inducible resistance to clarithromycin was maintained only in M. a. bolletii. Thus, the sequence analysis of the erm(41) gene can reliably identify the preservation of sensitivity to macrolides and serve as an important tool in the establishment of therapeutic regimens in cases of infections with M. abscessus.<\/jats:p>","DOI":"10.3390\/antibiotics11070873","type":"journal-article","created":{"date-parts":[[2022,6,28]],"date-time":"2022-06-28T23:59:22Z","timestamp":1656460762000},"page":"873","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Mycobacterioses Induced by Mycobacterium abscessus: Case Studies Indicating the Importance of Molecular Analysis for the Identification of Antibiotic Resistance"],"prefix":"10.3390","volume":"11","author":[{"given":"Lenka","family":"Ryskova","sequence":"first","affiliation":[{"name":"Institute of Clinical Microbiology, Faculty of Medicine in Hradec Kralove, Charles University, 50003 Hradec Kralove, Czech Republic"},{"name":"University Hospital, Charles University, 50005 Hradec Kralove, Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Radka","family":"Bolehovska","sequence":"additional","affiliation":[{"name":"Institute of Clinical Microbiology, Faculty of Medicine in Hradec Kralove, Charles University, 50003 Hradec Kralove, Czech Republic"},{"name":"University Hospital, Charles University, 50005 Hradec Kralove, Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rudolf","family":"Kukla","sequence":"additional","affiliation":[{"name":"Institute of Clinical Microbiology, Faculty of Medicine in Hradec Kralove, Charles University, 50003 Hradec Kralove, Czech Republic"},{"name":"University Hospital, Charles University, 50005 Hradec Kralove, Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michal","family":"Svarc","sequence":"additional","affiliation":[{"name":"University Hospital, Charles University, 50005 Hradec Kralove, Czech Republic"},{"name":"Department of Pneumology, Faculty of Medicine in Hradec Kralove, Charles University, 50005 Hradec Kralove, Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alzbeta","family":"Zavrelova","sequence":"additional","affiliation":[{"name":"University Hospital, Charles University, 50005 Hradec Kralove, Czech Republic"},{"name":"4th Department of Internal Medicine, Faculty of Medicine in Hradec Kralove, Charles University, 50005 Hradec Kralove, Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hubert","family":"Vanicek","sequence":"additional","affiliation":[{"name":"University Hospital, Charles University, 50005 Hradec Kralove, Czech Republic"},{"name":"Department of Pediatrics, Faculty of Medicine in Hradec Kralove, Charles University, 50005 Hradec Kralove, Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5771-3381","authenticated-orcid":false,"given":"Ivo","family":"Pavlik","sequence":"additional","affiliation":[{"name":"Faculty of Regional Development and International Studies, Mendel University in Brno, tr. Generala Piky 7, 61300 Brno, Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2691-6458","authenticated-orcid":false,"given":"Pavel","family":"Bostik","sequence":"additional","affiliation":[{"name":"Institute of Clinical Microbiology, Faculty of Medicine in Hradec Kralove, Charles University, 50003 Hradec Kralove, Czech Republic"},{"name":"University Hospital, Charles University, 50005 Hradec Kralove, Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,6,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"74","DOI":"10.1186\/s12929-020-00667-6","article-title":"Of tuberculosis and non-tuberculous mycobacterial infections\u2014A comparative analysis of epidemiology, diagnosis and treatment","volume":"27","author":"Gopalaswamy","year":"2020","journal-title":"J. Biomed. 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