Emergence of Mycobacterium simiae: A retrospective study from a tertiary care center in Lebanon.
The objective of this study is to describe the clinical significance of Mycobacterium simiae at a major tertiary care center in Lebanon.This is a retrospective study of patients with positive cultures for M. simiae isolated between 2004 and 2016 at the American University of Beirut Medical Center.Th...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2018-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC5884548?pdf=render |
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| author | Amal Hamieh Ralph Tayyar Houssam Tabaja Saeed E L Zein Pierre Bou Khalil Nathalie Kara Zeina A Kanafani Nadim Kanj Imad Bou Akl George Araj Ghina Berjaoui Souha S Kanj |
| author_facet | Amal Hamieh Ralph Tayyar Houssam Tabaja Saeed E L Zein Pierre Bou Khalil Nathalie Kara Zeina A Kanafani Nadim Kanj Imad Bou Akl George Araj Ghina Berjaoui Souha S Kanj |
| author_sort | Amal Hamieh |
| collection | DOAJ |
| description | The objective of this study is to describe the clinical significance of Mycobacterium simiae at a major tertiary care center in Lebanon.This is a retrospective study of patients with positive cultures for M. simiae isolated between 2004 and 2016 at the American University of Beirut Medical Center.This study included 103 M. simiae isolates recovered from 51 patients. Their mean age was 62.7 years. The majority were males and smokers. Specimens were mostly from respiratory sources (97%). Common comorbidities included chronic lung disease (such as chronic obstructive pulmonary disease), solid tumor, systemic disease, and diabetes mellitus. Productive cough and dyspnea were the most common symptoms. Frequent radiographic findings were infiltrates and nodules on chest X-ray and nodules, infiltrates, and bronchiectasis on chest computed tomography scan. Among 18 tested isolates, 5.8% were resistant to clarithromycin, 11.7% to amikacin, and 70-100% to other antimicrobials. Out of 13 patients receiving early treatment, 5 noted improvement, one had recurrence of symptoms, two received alternative diagnosis, and five died. Two of those deaths were related to M. simiae. Common treatment regimens included clarithromycin in different combinations with trimethoprim-sulfamethoxazole, moxifloxacin, and amikacin. Moreover, clofazimine was used in only two patients whose isolates were resistant to all but one agent. Duration of treatment ranged from 6-24 months.In Lebanon, M. simiae is increasingly encountered with true infection rates of at least 47%. Furthermore, the prevalence of multidrug resistance among the Lebanese M. simiae isolates is very high limiting the treatment options. |
| first_indexed | 2024-12-10T16:08:33Z |
| format | Article |
| id | doaj.art-1f32269d122843d69a489adee4e7c008 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-10T16:08:33Z |
| publishDate | 2018-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-1f32269d122843d69a489adee4e7c0082022-12-22T01:42:10ZengPublic Library of Science (PLoS)PLoS ONE1932-62032018-01-01134e019539010.1371/journal.pone.0195390Emergence of Mycobacterium simiae: A retrospective study from a tertiary care center in Lebanon.Amal HamiehRalph TayyarHoussam TabajaSaeed E L ZeinPierre Bou KhalilNathalie KaraZeina A KanafaniNadim KanjImad Bou AklGeorge ArajGhina BerjaouiSouha S KanjThe objective of this study is to describe the clinical significance of Mycobacterium simiae at a major tertiary care center in Lebanon.This is a retrospective study of patients with positive cultures for M. simiae isolated between 2004 and 2016 at the American University of Beirut Medical Center.This study included 103 M. simiae isolates recovered from 51 patients. Their mean age was 62.7 years. The majority were males and smokers. Specimens were mostly from respiratory sources (97%). Common comorbidities included chronic lung disease (such as chronic obstructive pulmonary disease), solid tumor, systemic disease, and diabetes mellitus. Productive cough and dyspnea were the most common symptoms. Frequent radiographic findings were infiltrates and nodules on chest X-ray and nodules, infiltrates, and bronchiectasis on chest computed tomography scan. Among 18 tested isolates, 5.8% were resistant to clarithromycin, 11.7% to amikacin, and 70-100% to other antimicrobials. Out of 13 patients receiving early treatment, 5 noted improvement, one had recurrence of symptoms, two received alternative diagnosis, and five died. Two of those deaths were related to M. simiae. Common treatment regimens included clarithromycin in different combinations with trimethoprim-sulfamethoxazole, moxifloxacin, and amikacin. Moreover, clofazimine was used in only two patients whose isolates were resistant to all but one agent. Duration of treatment ranged from 6-24 months.In Lebanon, M. simiae is increasingly encountered with true infection rates of at least 47%. Furthermore, the prevalence of multidrug resistance among the Lebanese M. simiae isolates is very high limiting the treatment options.http://europepmc.org/articles/PMC5884548?pdf=render |
| spellingShingle | Amal Hamieh Ralph Tayyar Houssam Tabaja Saeed E L Zein Pierre Bou Khalil Nathalie Kara Zeina A Kanafani Nadim Kanj Imad Bou Akl George Araj Ghina Berjaoui Souha S Kanj Emergence of Mycobacterium simiae: A retrospective study from a tertiary care center in Lebanon. PLoS ONE |
| title | Emergence of Mycobacterium simiae: A retrospective study from a tertiary care center in Lebanon. |
| title_full | Emergence of Mycobacterium simiae: A retrospective study from a tertiary care center in Lebanon. |
| title_fullStr | Emergence of Mycobacterium simiae: A retrospective study from a tertiary care center in Lebanon. |
| title_full_unstemmed | Emergence of Mycobacterium simiae: A retrospective study from a tertiary care center in Lebanon. |
| title_short | Emergence of Mycobacterium simiae: A retrospective study from a tertiary care center in Lebanon. |
| title_sort | emergence of mycobacterium simiae a retrospective study from a tertiary care center in lebanon |
| url | http://europepmc.org/articles/PMC5884548?pdf=render |
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