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Chien YC, Chang CH, Huang CK, Chen YH, Liu CJ, Chen CY, Wang PH, Shu CC, Kuo LC, Wang JY, Ku SC, Wang HC, Yu CJ. The impact of nontuberculous mycobacterial lung disease in critically ill patients: Significance for survival and ventilator use. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2024; 57:328-336. [PMID: 38220536 DOI: 10.1016/j.jmii.2023.12.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 12/16/2023] [Accepted: 12/28/2023] [Indexed: 01/16/2024]
Abstract
BACKGROUND This study investigates the impact of nontuberculous mycobacterial lung disease (NTM-LD) on mortality and mechanical ventilation use in critically ill patients. METHODS We enrolled patients with NTM-LD or tuberculosis (TB) in intensive care units (ICU) and analysed their association with 30-day mortality and with mechanical ventilator-free survival (VFS) at 30 days after ICU admission. RESULTS A total of 5996 ICU-admitted patients were included, of which 541 (9.0 %) had TB and 173 (2.9 %) had NTM-LD. The overall 30-day mortality was 22.2 %. The patients with NTM-LD had an adjusted hazard ratio (aHR) of 1.49 (95 % CI, 1.06-2.05), and TB patients had an aHR of 2.33 (95 % CI, 1.68-3.24), compared to ICU patients with negative sputum mycobacterial culture by multivariable Cox proportional hazard (PH) regression. The aHR of age<65 years, obesity, idiopathic pulmonary fibrosis, end-stage kidney disease, active cancer and autoimmune disease and diagnosis of respiratory failure were also significantly positively associated with ICU 30-day mortality. In multivariable Cox PH regression for VFS at 30 days in patients requiring invasive mechanical ventilation, NTM-LD was negatively associated with VFS (aHR 0.71, 95 % CI: 0.56-0.92, p = 0.009), while TB showed no significant association. The diagnosis of respiratory failure itself predicted unfavourable outcome for 30-day mortality and a negative impact on VFS at 30 days. CONCLUSIONS NTM-LD and TB were not uncommon in ICU and both were correlated with increasing 30-day mortality in ICU patients. NTM-LD was associated with a poorer outcome in terms of VFS at 30 days.
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Affiliation(s)
- Ying-Chun Chien
- Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan; Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chin-Hao Chang
- Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan
| | - Chun-Kai Huang
- Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Yung-Hsuan Chen
- Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Chia-Jung Liu
- Department of Internal Medicine, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu, Taiwan
| | - Chung-Yu Chen
- Department of Internal Medicine, National Taiwan University, Hospital Yun-Lin Branch, Douliu City, Taiwan
| | - Ping-Huai Wang
- Department of Internal Medicine, Far Eastern Memorial Hospital, New Taipei City, Taiwan
| | - Chin-Chung Shu
- Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan.
| | - Lu-Cheng Kuo
- Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Jann-Yuan Wang
- Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Shih-Chi Ku
- Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Hao-Chien Wang
- Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan; Department of Medicine, National Taiwan University Cancer Center, Taipei, Taiwan
| | - Chong-Jen Yu
- Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan; Department of Internal Medicine, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu, Taiwan
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2
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Jeong JH, Heo M, Ju S, Lee SJ, Cho YJ, Jeong YY, Lee JD, Yoo JW. Pulmonary mycobacterial infection is associated with increased mortality in patients with acute respiratory distress syndrome. Medicine (Baltimore) 2021; 100:e26969. [PMID: 34414967 PMCID: PMC8376361 DOI: 10.1097/md.0000000000026969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 08/01/2021] [Indexed: 01/04/2023] Open
Abstract
Although pulmonary mycobacterial infection is associated with acute respiratory distress syndrome (ARDS) in critically ill patients, its clinical implication on patients with ARDS has not been clearly elucidated. The aim of study was to investigate the clinical significance of pulmonary mycobacterial infection in patients with ARDS.Between January 2014 and April 2019, medical records of 229 patients with ARDS who met the Berlin criteria and received invasive mechanical ventilation in medical intensive care unit were reviewed. Clinical characteristics and the rate of mortality between patients with and without pulmonary mycobacterial infection were compared. Factors associated with a 28-day mortality were analyzed statistically.Twenty two (9.6%) patients were infected with pulmonary mycobacteria (18 with tuberculosis and 4 with non-tuberculous mycobacteria). There were no differences in baseline characteristics, the severity of illness scores. Other than a higher rate of renal replacement therapy required in those without pulmonary mycobacterial infection, the use of adjunctive therapy did not differ between the groups. The 28- day mortality rate was significantly higher in patients with pulmonary mycobacterial infection (81.8% vs 58%, P = .019). Pulmonary mycobacterial infection was significantly associated with 28-day mortality (hazard ratio 1.852, 95% confidence interval 1.108-3.095, P = .019).Pulmonary mycobacterial infection was associated with increased 28-day mortality in patients with ARDS.
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Affiliation(s)
- Jong Hwan Jeong
- Department of Internal Medicine, Gyeongsang National University Hospital, Jinju, Korea
| | - Manbong Heo
- Department of Internal Medicine, Gyeongsang National University Hospital, Jinju, Korea
| | - Sunmi Ju
- Department of Internal Medicine, Gyeongsang National University Hospital, Jinju, Korea
| | - Seung Jun Lee
- Department of Internal Medicine, Gyeongsang National University Hospital, Jinju, Korea
- Gyeongsang National University College of Medicine, Jinju, Korea
| | - Yu Ji Cho
- Department of Internal Medicine, Gyeongsang National University Hospital, Jinju, Korea
- Gyeongsang National University College of Medicine, Jinju, Korea
| | - Yi Yeong Jeong
- Department of Internal Medicine, Gyeongsang National University Hospital, Jinju, Korea
- Gyeongsang National University College of Medicine, Jinju, Korea
| | - Jong Deog Lee
- Department of Internal Medicine, Gyeongsang National University Hospital, Jinju, Korea
- Gyeongsang National University College of Medicine, Jinju, Korea
| | - Jung-Wan Yoo
- Department of Internal Medicine, Gyeongsang National University Hospital, Jinju, Korea
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Abstract
No previous studies have examined Mycobacterium avium complex pulmonary disease (MAC-PD) in only elderly patients ⩾75 years old. Here, we investigated the exacerbating factors of MAC-PD in elderly patients and clarified cases that can be followed up without MAC medication. From April 2011 to March 2019, 126 advanced aged patients at our institute were newly diagnosed with MAC-PD, and could be observed based on radiological findings for over a year. Their medical records were retrospectively examined for clinical and radiological findings at the time of diagnosis and 1 year later. To identify the predictors of exacerbation, clinical characteristics of 109 treatment-naïve patients were compared between exacerbated and unchanged groups. Additionally, the unchanged group was followed for one more year. In the current study, positive acid-fast bacilli smears from the sputum test, the presence of cavitary lesions and extensive radiological findings, particularly abnormal shadows in ⩾3 lobes, were predictive of exacerbation among treatment-naïve elderly MAC-PD patients. In the unchanged group, <10% showed exacerbation of radiological findings within the subsequent year. In conclusion, if the sputum smear is negative, no cavitary lesions are present, and abnormal shadows are restricted to ⩽2 lobes, elderly patients with MAC-PD may remain untreated for a few years.
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4
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Lee MR, Chang LY, Ko JC, Wang HC, Huang YW. Nontuberculous mycobacterial lung disease epidemiology in Taiwan: A systematic review. J Formos Med Assoc 2020; 119 Suppl 1:S4-S12. [PMID: 32482605 DOI: 10.1016/j.jfma.2020.05.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 05/15/2020] [Accepted: 05/15/2020] [Indexed: 12/11/2022] Open
Abstract
Nontuberculous mycobacteria (NTM) are critical emerging global infectious pathogens. Though NTM can be mere colonizers when isolated from human specimens, NTM are also responsible for diverse human infections. NTM-lung disease (NTM-LD) is the most common human disease entity. The present review aims to provide general insight into NTM-LD epidemiology in Taiwan. In reviewing NTM epidemiology in Taiwan, we discovered three distinguishing features. First, NTM disease incidence has increased in Taiwan over the past decade. Second, the distribution of NTM varies geographically in Taiwan. Mycobacterium avium-intracellulare complex (MAC) is the dominant species in northern Taiwan, whereas Mycobacterium abscessus complex and MAC may be equally dominant in southern Taiwan. Third, researchers in Taiwan have published valuable research investigating NTM among special patient populations, including patients in intensive care units, with ventilator dependency, with pulmonary tuberculosis, and who are infected with specific NTM species. The largest obstacle to clarifying NTM epidemiology in Taiwan may be the lack of routine NTM species identification in laboratories. Increased awareness of NTM diseases and acknowledgment that NTM species identification is crucial and guides clinical management are essential steps for facilitating the identification of NTM species in laboratories.
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Affiliation(s)
- Meng-Rui Lee
- Department of Internal Medicine, National Taiwan University Hospital, Hsin-Chu Branch, Hsin-Chu, Taiwan; Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Lih-Yu Chang
- Department of Internal Medicine, National Taiwan University Hospital, Hsin-Chu Branch, Hsin-Chu, Taiwan
| | - Jen-Chung Ko
- Department of Internal Medicine, National Taiwan University Hospital, Hsin-Chu Branch, Hsin-Chu, Taiwan; Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Hao-Chien Wang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Yi-Wen Huang
- Respiratory and Critical Care Center, Changhua Hospital, Ministry of Health & Welfare, Changhua, Taiwan.
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Feng JY, Chen WC, Chen YY, Su WJ. Clinical relevance and diagnosis of nontuberculous mycobacterial pulmonary disease in populations at risk. J Formos Med Assoc 2020; 119 Suppl 1:S23-S31. [PMID: 32482607 DOI: 10.1016/j.jfma.2020.05.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 04/26/2020] [Accepted: 05/12/2020] [Indexed: 12/11/2022] Open
Abstract
The lungs are the most common disease site of nontuberculous mycobacteria (NTM). However, the isolation of NTM in a respiratory specimen does not indicate lung disease (LD). Differentiation between NTM colonization and NTM-LD remains challenging. In this brief review, we summarize the clinical impact of NTM-LD on morbidity and mortality in high-risk populations. The diagnosis criteria for NTM-LD-including clinical features, radiological presentations, and microbiological evidence-are also reviewed, according to the latest American Thoracic Society (ATS)/Infectious Disease Society of America (IDSA) guideline and the British Thoracic Society (BTS) guideline. However, the diagnosis of NTM-LD does not necessitate the initiation of anti-NTM treatment. Both environmental, host, and bacterial factors should be considered to identify patients that require NTM-LD treatment.
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Affiliation(s)
- Jia-Yih Feng
- Department of Chest Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Wei-Chih Chen
- Department of Chest Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan; Institute of Emergency and Critical Care Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Ying-Ying Chen
- Department of Internal Medicine, Taipei Veterans General Hospital Taoyuan Branch, Taoyuan, Taiwan
| | - Wei-Juin Su
- Department of Chest Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan.
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Shu CC, Wu MF, Pan SW, Wu TS, Lai HC, Lin MC. Host immune response against environmental nontuberculous mycobacteria and the risk populations of nontuberculous mycobacterial lung disease. J Formos Med Assoc 2020; 119 Suppl 1:S13-S22. [PMID: 32451216 DOI: 10.1016/j.jfma.2020.05.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/21/2020] [Accepted: 05/04/2020] [Indexed: 12/16/2022] Open
Abstract
Nontuberculous mycobacterial lung disease (NTM-LD) prevalence has been increasing over the recent decades. Numerous host factors are associated with NTM-LD development, including susceptible phenotypes such as ciliary defect and lung structural change, pulmonary clearance defect with poor clearance of secretions, and immune suppression. Specifically, regarding the susceptible host phenotypes without clear pathogenesis, a slender body, pectus excavatum, and postmenopausal female status are common. Also, decreased host immunity to NTM, especially T helper 1 cell responses is frequently observed. Even so, the underlying mechanisms remain unclear and relevant large-scale studies are lacking. Infections due to host genetics associated defects are mostly untreatable but rare in Asia, particularly Taiwan. Nevertheless, some risks for NTM-LD are controllable over disease progression. We suggest that clinicians first manage host factors and deal with the controllable characteristics of NTM-LD, followed by optimizing anti-NTM treatment. Further researches focusing on NTM-LD pathogenesis, especially the host-NTM interaction may advance understanding the nature of the disease and develop efficient therapeutic regimens.
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Affiliation(s)
- Chin-Chung Shu
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan; College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Ming-Fang Wu
- Graduate Institute of Toxicology, College of Medicine, National Taiwan University, Taipei, Taiwan; Institute of Statistical Sciences, Academia Sinica, Taipei, Taiwan
| | - Sheng-Wei Pan
- Department of Chest Medicine, Taipei Veterans General Hospital, Taiwan; School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Ting-Shu Wu
- Division of Infectious Diseases, Department of Internal Medicine, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, No. 5, Fuxing St., Guishan Dist., Taoyuan 33305, Taiwan.
| | - Hsin-Chih Lai
- Central Research Laboratory, Xiamen Chang Gung Hospital, Xiamen, Fujian, China; Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
| | - Meng-Chih Lin
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
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Wu MF, Shu CC, Wang JY, Yan BS, Lai HC, Chiang BL, Wu LSH, Yu CJ. NLRP3 inflammasome is attenuated in patients with Mycobacterium avium complex lung disease and correlated with decreased interleukin-1β response and host susceptibility. Sci Rep 2019; 9:12534. [PMID: 31467293 PMCID: PMC6715708 DOI: 10.1038/s41598-019-47609-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 06/28/2019] [Indexed: 01/30/2023] Open
Abstract
The incidence of nontuberculous mycobacteria lung disease (NTM-LD) is increasing in patients without human immunodeficiency virus. Mycobacterium avium complex (MAC) is one of the most common pathogenic species. The presence of MAC has a clinical relevance of around 35~42%, indicating the possibility of host susceptibility. Previous studies have shown that interleukin (IL)-1β and IL-1-receptor knock-out mice are susceptible to mycobacterial infections; however, the role of inflammasome-driven interleukin (IL)-1β has not been studied in MAC-LD. We enrolled patients with MAC-LD and healthy controls. Peripheral blood mononuclear cells (PBMCs), monocytes, and monocyte-derived macrophages were stimulated by MAC bacilli. The responses of interleukin(IL)-1β and the expression of inflammasome and toll-like receptors (TLRs) were measured. Single nucleotide polymorphisms (SNPs) were also examined for NLRP3 and TLR2 genes. In the patients with MAC-LD, the IL-1β responses decreased in PBMCs, monocytes, and macrophages assayed by MAC bacilli in comparison to the healthy controls. In addition, the level of caspase-1 after stimulation was lower in the MAC-LD group, although the mRNA level of IL-1β was not significantly lower. In surveying the activation of IL-1β, the MAC-LD group had an attenuated mRNA level of NLRP3 but similar levels of AIM2 and ASC compared with the controls. The SNPs rs3806268 and rs34298354 in NLRP3 for females and rs3804100 in TLR2 for males were associated with MAC-LD. In conclusion, our patients with MAC-LD had attenuated IL-1β production, which may have been due to lower activation of the NLRP3-caspase-1 axis. Two SNPs of NLRP3 and one of TLR2 were correlated with MAC-LD, possibly indicating host susceptibility.
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Affiliation(s)
- Ming-Fang Wu
- Institute of Statistical Sciences, Academia Sinica, Taipei, Taiwan.,Graduate Institute of Toxicology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chin-Chung Shu
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Jann-Yuan Wang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Bo-Shiun Yan
- Institute of Biochemistry and Molecular Biology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Hsin-Chih Lai
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, and Research Center for Chinese Herbal Medicine and Research Center for Food and Cosmetic Safety, College of Human Ecology, Chang Gung University of Science and Technology, Tao-Yuan, Taiwan
| | - Bor-Luen Chiang
- College of Medicine, National Taiwan University, Taipei, Taiwan.,Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan
| | - Lawrence Shih-Hsin Wu
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan.
| | - Chong-Jen Yu
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan. .,College of Medicine, National Taiwan University, Taipei, Taiwan.
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Shu CC, Wu LSH, Wu MF, Lai HC, Wang PH, Cheng SL, Wang JY, Yu CJ. Mono- and poly-functional T cells in nontuberculous mycobacteria lung disease patients: Implications in analyzing risk of disease progression. Cytokine 2019; 120:176-185. [PMID: 31085455 DOI: 10.1016/j.cyto.2019.05.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Revised: 04/29/2019] [Accepted: 05/01/2019] [Indexed: 12/21/2022]
Abstract
AT A GLANCE The diagnosis and progression of nontuberculous mycobacteria lung disease (NTN-LD) are important for clinical judgement but cannot easily be predicted. The immunological response of mono- and poly-functional T cells, a representative of host reactivity to NTM, could be a surrogate biomarker for disease and progression prediction. BACKGROUND Mycobacterium avium complex (MAC) and M. abscessus (MAB) induced lung disease (LD) have become a clinical concern. Predicting clinical disease relevance and progression is important, but suitable biomarkers are lacking. The host immune response of mono- and poly-functional T cells might aid in clinical judgement. METHODS We enrolled 140 participants, including 42 MAC-LD, 25 MAB-LD, 31 MAC airway colonization (MAC-Co), 15 MAB-Co patients, and 27 healthy controls. Their blood mono- and poly-functional T cells were measured and analyzed after in-vitro stimulation. RESULTS Patients with MAC-LD generally had lower total IFN-γ+, total TNF-α+ and triple-positive T cells but higher mono-IL-2+ expression than the controls and MAC-Co group. The MAB-LD group had lower total IL-2 and triple positive cells than the controls and colonization group. Multivariate analysis revealed that body mass index (BMI), mono-IL2+ CD4+ and triple positive-CD8+ cells (PMA stimulation) significantly predicted MAC-LD from the controls. By contrast, male gender and triple positive-CD4+ cells predicted MAC-LD from colonization. On the other hand, the triple positive-CD4+ cells (PMA stimulation) alone or together with the mock/MAB ratio of IL-2+/TNF-α+ CD4 cells could predict MAB-LD in the MAB-Co group or the controls. Among MAC/MAB-LD patients without anti-mycobacterial treatment, MAC-specific mono-IFN-γ+ CD4+ cells and PMA-induced triple positive-CD4+ cells were correlated with progression, with an area under the ROC curve of 0.875. CONCLUSIONS The patients with MAC/MAB-LD had attenuated poly-functional T cells. The triple-positive CD4+ cells could be useful in diagnosing disease from colonization. MAC-specific mono-IFN-γ+ CD4+ cells and triple positive-CD4+ might predict radiographic progression, which could be useful in making treatment decisions.
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Affiliation(s)
- Chin-Chung Shu
- Department of Internal Medicine, National Taiwan University Hospital, Taiwan
| | | | - Ming-Fang Wu
- Institute of Statistical Science, Academia Sinica, Taipei, Taiwan; Graduate Institute of Toxicology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Hsin-Chih Lai
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan; Research Center for Chinese Herbal Medicine and Research Center for Food and Cosmetic Safety, College of Human Ecology, Chang Gung University of Science and Technology, Tao-Yuan, Taiwan; Department of Laboratory Medicine, Xiamen Chang Gung Memorial Hospital, Xiamen, Fujian, China
| | - Ping-Huai Wang
- Division of Chest Medicine, Department of Internal Medicine, Far Eastern Memorial Hospital, Taiwan; Department of Nursing, Oriental Institute of Technology, Taiwan.
| | - Shih-Lung Cheng
- Division of Chest Medicine, Department of Internal Medicine, Far Eastern Memorial Hospital, Taiwan; Department of Chemical Engineering and Materials Science, Yuan-Ze University, Taiwan
| | - Jann-Yuan Wang
- Department of Internal Medicine, National Taiwan University Hospital, Taiwan
| | - Chong-Jen Yu
- Department of Internal Medicine, National Taiwan University Hospital, Taiwan
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9
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Cowman SA, Jacob J, Obaidee S, Andres Floto R, Wilson R, Haworth CS, Loebinger MR. Latent class analysis to define radiological subgroups in pulmonary nontuberculous mycobacterial disease. BMC Pulm Med 2018; 18:145. [PMID: 30170572 PMCID: PMC6119278 DOI: 10.1186/s12890-018-0675-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 06/13/2018] [Indexed: 11/17/2022] Open
Abstract
Background Nontuberculous mycobacterial (NTM) pulmonary disease has conventionally been classified on the basis of radiology into fibrocavitary and nodular-bronchiectatic disease. Whilst being of great clinical utility, this may not capture the full spectrum of radiological appearances present. The aim of this study was to use latent class analysis (LCA) as an unbiased method of grouping subjects with NTM-pulmonary disease based on their CT features and to compare the clinical characteristics of these groups. Methods Individuals with NTM-pulmonary disease were recruited and a contemporaneous CT scan obtained. This was scored using an NTM-specific scoring system. LCA was used to identify groups with common radiological characteristics. The analysis was then repeated in an independent cohort. Results Three classes were identified in the initial cohort of 85 subjects. Group 1 was characterised by severe bronchiectasis, cavitation and aspergillomas, Group 2 by relatively minor radiological changes, and Group 3 by predominantly bronchiectasis only. These findings were reproduced in an independent cohort of 62 subjects. Subjects in Group 1 had a lower BMI and serum albumin, higher serum CRP, and a higher mortality. Conclusions These findings suggest that NTM-pulmonary may be divided into three radiological subgroups, and that important clinical and survival differences exist between these groups. Electronic supplementary material The online version of this article (10.1186/s12890-018-0675-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Steven A Cowman
- National Heart and Lung Institute, Imperial College London, London, UK. .,Host Defence Unit, Royal Brompton Hospital, London, UK.
| | - Joseph Jacob
- National Heart and Lung Institute, Imperial College London, London, UK.,Department of Radiology, Royal Brompton Hospital, London, UK
| | - Sayed Obaidee
- Cambridge Centre for Lung Infection, Papworth Hospital, Cambridge, UK
| | - R Andres Floto
- Cambridge Centre for Lung Infection, Papworth Hospital, Cambridge, UK.,Department of Medicine, University of Cambridge, Cambridge, UK
| | - Robert Wilson
- National Heart and Lung Institute, Imperial College London, London, UK.,Host Defence Unit, Royal Brompton Hospital, London, UK
| | - Charles S Haworth
- Cambridge Centre for Lung Infection, Papworth Hospital, Cambridge, UK.,Department of Medicine, University of Cambridge, Cambridge, UK
| | - Michael R Loebinger
- National Heart and Lung Institute, Imperial College London, London, UK.,Host Defence Unit, Royal Brompton Hospital, London, UK
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10
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Pan SW, Shu CC, Feng JY, Wang JY, Chan YJ, Yu CJ, Su WJ. Microbiological Persistence in Patients With Mycobacterium avium Complex Lung Disease: The Predictors and the Impact on Radiographic Progression. Clin Infect Dis 2018; 65:927-934. [PMID: 28541556 DOI: 10.1093/cid/cix479] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Accepted: 05/23/2017] [Indexed: 01/05/2023] Open
Abstract
Background Persistent growth of Mycobacterium avium complex (MAC) in the lungs indicates continuous infection in MAC lung disease (MAC-LD), but its clinical significance has not been investigated. We aimed to evaluate the predictors of persistent culture-positivity for MAC (MAC-PP) and its impact on radiographic deterioration in MAC-LD. Methods Patients with MAC-LD at multiple medical centers from 2011 to 2016 were enrolled retrospectively. Microbiological persistence of MAC-LD was defined as MAC-PP exceeding 1 year, in contrast with the negative-conversion group. The outcome was radiographic progression, namely, increased number of involved lung areas or cavitary formation. Results Among 126 patients with MAC-LD, 75 (60%) were in the MAC-PP group; these patients had a higher proportion of radiographic progression (54%) than patients in the negative-conversion group (odds ratio [OR], 3.318; 95% confidence interval, 1.146-9.612). Independent predictors of MAC-PP were low body mass index (BMI), radiographic nodular-bronchiectatic (NB) pattern, and increase in the highest grade of acid-fast bacilli smear (AFS). Patients with BMI <21 kg/m2, NB pattern, and positive AFS had an OR of 17.7 for MAC-PP, and those with ≥2 of the factors had a 4.5-fold increased OR for MAC-PP relative to the comparison group. Other than MAC-PP, the highest AFS grade and no anti-MAC treatment were correlated with radiographic progression. Conclusion Microbiological persistence in patients with MAC-LD is not uncommon and leads to an increased risk of radiographic progression. The predictors of MAC-PP are low BMI, NB pattern, and high AFS grade; if these risk factors are present, anti-MAC treatment should be seriously considered.
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Affiliation(s)
- Sheng-Wei Pan
- Department of Chest Medicine, Taipei Veterans General Hospital.,School of Medicine.,Institute of Public Health, National Yang-Ming University
| | - Chin-Chung Shu
- Department of Internal Medicine.,Department of Traumatology, National Taiwan University Hospital.,Graduate Institute of Clinical Medicine, National Taiwan University
| | - Jia-Yih Feng
- Department of Chest Medicine, Taipei Veterans General Hospital.,School of Medicine
| | | | - Yu-Jiun Chan
- Institute of Public Health, National Yang-Ming University.,Division of Infectious Diseases, Department of Internal Medicine.,Division of Microbiology, Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | | | - Wei-Juin Su
- Department of Chest Medicine, Taipei Veterans General Hospital.,School of Medicine
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11
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Kumagai S, Ito A, Hashimoto T, Marumo S, Tokumasu H, Kotani A, Yamaki H, Shirata M, Furuuchi K, Fukui M, Ishida T. Development and validation of a prognostic scoring model for Mycobacterium avium complex lung disease: an observational cohort study. BMC Infect Dis 2017. [PMID: 28629426 PMCID: PMC5477133 DOI: 10.1186/s12879-017-2544-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Background Patients with Mycobacterium avium complex (MAC) lung disease (LD) have a heterogeneous prognosis. This study aimed to develop and validate a prognostic scoring model for these patients using independent risk factors for survival. Methods We retrospectively analyzed the data of patients with MAC-LD from two hospitals (cohort 1, n = 368; cohort 2, n = 118). Cohort 1 was evaluated using a multivariate Cox proportional hazards model to identify independent risk factors for overall survival (OS). A prognostic scoring model composed of these factors was developed, and cohort 1 was stratified into three groups according to risk using the log-rank test. Finally, the prognostic scoring model was validated using the data of cohort 2. Results Seven independent risk factors for OS were selected from cohort 1, including the male sex, age ≥ 70 years, the presence of a malignancy, body mass index <18.5 kg/m2, lymphocyte count <1000 cells/μL, serum albumin levels <3.5 g/dL, and fibrocavitary disease. The areas under the receiver operating characteristic curves for the prognostic scoring model were 0.84 [95% confidence interval (CI), 0.80 − 0.89] for cohort 1 and 0.84 (95% CI, 0.75 − 0.92) for cohort 2. The 5-year OS rates of patients stratified into low-risk, intermediate-risk, and high-risk groups were 97.6, 76.6, and 30.8%, respectively (P < 0.001), in cohort 1, and 97.2, 82.3, and 45.4%, respectively (P < 0.001), in cohort 2. Conclusions This study is the first to develop and validate a prognostic scoring model for patients with MAC-LD. This model may prove useful in clinical settings and practical in estimating the prognosis. Electronic supplementary material The online version of this article (doi:10.1186/s12879-017-2544-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Shogo Kumagai
- Department of Respiratory Medicine, Kurashiki Central Hospital, 1-1-1 Miwa, Kurashiki, Okayama, 710-0052, Japan.
| | - Akihiro Ito
- Department of Respiratory Medicine, Kurashiki Central Hospital, 1-1-1 Miwa, Kurashiki, Okayama, 710-0052, Japan
| | - Toru Hashimoto
- Department of Respiratory Medicine, Kurashiki Central Hospital, 1-1-1 Miwa, Kurashiki, Okayama, 710-0052, Japan
| | - Satoshi Marumo
- Respiratory Disease Center, Tazuke Kofukai Medical Research Institute, Kitano Hospital, Osaka, Japan
| | - Hironobu Tokumasu
- Department of Consultation, Kurashiki Clinical Research Institute, Okayama, Japan
| | - Aya Kotani
- Respiratory Disease Center, Tazuke Kofukai Medical Research Institute, Kitano Hospital, Osaka, Japan
| | - Haruka Yamaki
- Respiratory Disease Center, Tazuke Kofukai Medical Research Institute, Kitano Hospital, Osaka, Japan
| | - Masahiro Shirata
- Respiratory Disease Center, Tazuke Kofukai Medical Research Institute, Kitano Hospital, Osaka, Japan
| | - Koji Furuuchi
- Department of Respiratory Medicine, Kurashiki Central Hospital, 1-1-1 Miwa, Kurashiki, Okayama, 710-0052, Japan
| | - Motonari Fukui
- Respiratory Disease Center, Tazuke Kofukai Medical Research Institute, Kitano Hospital, Osaka, Japan
| | - Tadashi Ishida
- Department of Respiratory Medicine, Kurashiki Central Hospital, 1-1-1 Miwa, Kurashiki, Okayama, 710-0052, Japan
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12
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The trend and the disease prediction of vascular endothelial growth factor and placenta growth factor in nontuberculous mycobacterial lung disease. Sci Rep 2016; 6:37266. [PMID: 27876856 PMCID: PMC5120340 DOI: 10.1038/srep37266] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 10/27/2016] [Indexed: 11/09/2022] Open
Abstract
Nontuberculous mycobacteria (NTM)-lung disease (LD) is an increasing health problem worldwide. The diagnosis of this disease remains difficult, however the application of placenta growth factor (PlGF) and vascular endothelial growth factor (VEGF) has not yet been studied. We screened patients with Mycobacterium avium complex or M. abscessus isolated from sputum, and enrolled 32 patients with NTM-LD and 93 with NTM pulmonary colonization. The NTM-LD group had a lower body mass index, higher proportion of bronchiectasis, more respiratory symptoms and pulmonary lesions, and higher titers of sputum acid-fast stain than the NTM pulmonary colonization group. The plasma level of PlGF was lower in the NTM-LD group than in the NTM colonization group, whereas the level of VEGF was higher in the NTM-LD group. In multivariable logistic regression analysis excluding NTM cultures, the predictive model for NTM-LD included sputum AFS titer, a nodular-bronchiectasis radiographic pattern, plasma VEGF/PlGF ratio, and chest radiographic score (VEGF/P1GF ratio became not significant as a factor in multivariable generalized linear model). The four-factor predictive index had good positive likelihood ratio and negative likelihood ratio for predicting NTM-LD in the patients with NTM in their sputum.
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13
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Lee MR, Tsai CJ, Hu JY, Lee SW, Ko JC, Wang HC, Yu CJ, Lee LN, Hsueh PR. Acquisition of Mycobacterium abscessus among ventilator-dependent patients in Taiwan chronic respiratory care facilities. Future Microbiol 2016; 11:491-500. [PMID: 27064349 DOI: 10.2217/fmb.16.6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM To investigate the acquisition of Mycobacterium abscessus among ventilator-dependent patients. MATERIALS & METHODS We prospectively recruited ventilator-dependent patients in five respiratory care wards (RCWs). Respiratory specimens were cultured for mycobacteria on day 1 (D1), 3 months (M3) and 6 months (M6) after enrollment. RESULTS 72 patients had cultures taken at all three time points. The proportion of patients with a culture positive for M. abscessus increased from 15.3% (11/72) on D1 to 30.6% (22/72) at M3 and 38.9% (28/72) at M6. Two M. abscessus subspecies abscessus isolates obtained from different patients had identical randomly amplified polymorphic DNA patterns. Being in RCW D and advanced age were significantly associated with initial cultures positivity. CONCLUSION Our study reveals that acquisition of M. abscessus was common among ventilator-dependent patients.
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Affiliation(s)
- Meng-Rui Lee
- Department of Internal Medicine, National Taiwan University Hospital Hsin-Chu Branch, Hsin-Chu, Taiwan.,Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan.,Institute of Preventive Epidemiology & Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan.,Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health & Welfare, Taoyuan City, Taiwan
| | - Chia-Jung Tsai
- Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health & Welfare, Taoyuan City, Taiwan
| | - Jia-Ying Hu
- Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health & Welfare, Taoyuan City, Taiwan
| | - Shih-Wei Lee
- Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health & Welfare, Taoyuan City, Taiwan
| | - Jen-Chung Ko
- Department of Internal Medicine, National Taiwan University Hospital Hsin-Chu Branch, Hsin-Chu, Taiwan
| | - Hao-Chien Wang
- Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Chong-Jen Yu
- Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Li-Na Lee
- Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan.,Department of Laboratory Medicine, National Taiwan University College of Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Po-Ren Hsueh
- Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan.,Department of Laboratory Medicine, National Taiwan University College of Medicine, National Taiwan University Hospital, Taipei, Taiwan
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14
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Yeung MW, Khoo E, Brode SK, Jamieson FB, Kamiya H, Kwong JC, Macdonald L, Marras TK, Morimoto K, Sander B. Health-related quality of life, comorbidities and mortality in pulmonary nontuberculous mycobacterial infections: A systematic review. Respirology 2016; 21:1015-25. [PMID: 27009804 DOI: 10.1111/resp.12767] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 01/25/2016] [Accepted: 01/30/2016] [Indexed: 11/28/2022]
Abstract
Nontuberculous mycobacterial (NTM) infections are increasing in disease frequency worldwide. This systematic review examines health-related quality of life (HRQOL), comorbidities and mortality associated with pulmonary NTM disease. We searched MEDLINE, EMBASE, CINAHL, Scopus Life Sciences, conference proceedings and Google (earliest date available to February 2015) for primary studies. Eligible studies compared populations with and without pulmonary NTM disease in high-income jurisdictions. We excluded studies on HIV/AIDS. All languages were accepted. Two reviewers followed MOOSE and PRISMA reporting guidelines and independently appraised quality using STROBE. All studies were summarized qualitatively regardless of quality. Of 3193 citations screened, we included 17 studies mostly from Taiwan (n = 5) and the USA (n = 4). Two studies assessed HRQOL; one assessed comorbidities, 11 assessed mortality, and three assessed multiple outcomes. Populations with pulmonary NTM reported significantly worse or similar HRQOL than the general population, depending on the instruments used. Some suggested greater prevalence of having bronchiectasis (n = 2) and greater risk of developing pulmonary tuberculosis (n = 1). Most (n = 7) suggested no difference in mortality, although only one was age-matched and gender-matched to the general population. Four suggested NTM populations had higher mortality-two of which compared with the general population and were deemed of high quality, while two compared with non-NTM patients from hospital. High clinical heterogeneity in study design may explain discordant results. Bias assessments and controlling for confounding were carried out poorly. No consistent trends were observed although there is suggestion of an increased health burden from respiratory diseases and increased mortality associated with pulmonary NTM disease.
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Affiliation(s)
| | - Edwin Khoo
- Public Health Ontario, Toronto, Ontario, Canada
| | - Sarah K Brode
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada.,West Park Healthcare Centre, Toronto, Ontario, Canada.,University Health Network and Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Frances B Jamieson
- Public Health Ontario, Toronto, Ontario, Canada.,Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Hiroyuki Kamiya
- Respiratory Medicine, Japanese Red Cross Medical Center, Tokyo, Japan
| | - Jeffrey C Kwong
- Public Health Ontario, Toronto, Ontario, Canada.,University Health Network and Mount Sinai Hospital, Toronto, Ontario, Canada.,Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada.,Department of Family and Community Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Liane Macdonald
- Public Health Ontario, Toronto, Ontario, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Theodore K Marras
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada.,University Health Network and Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Kozo Morimoto
- Respiratory Disease Center, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Beate Sander
- Public Health Ontario, Toronto, Ontario, Canada.,Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada.,Institute of Health Policy, Management and Evaluation at the University of Toronto, Toronto, Ontario, Canada.,Toronto Health Economics and Technology Assessment (THETA) collaborative, Toronto, Ontario, Canada
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15
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Factors associated with subsequent nontuberculous mycobacterial lung disease in patients with a single sputum isolate on initial examination. Clin Microbiol Infect 2015; 21:250.e1-7. [DOI: 10.1016/j.cmi.2014.08.025] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Revised: 07/03/2014] [Accepted: 08/07/2014] [Indexed: 11/18/2022]
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16
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Chu H, Zhao L, Xiao H, Zhang Z, Zhang J, Gui T, Gong S, Xu L, Sun X. Prevalence of nontuberculous mycobacteria in patients with bronchiectasis: a meta-analysis. Arch Med Sci 2014; 10:661-8. [PMID: 25276148 PMCID: PMC4175767 DOI: 10.5114/aoms.2014.44857] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Revised: 05/18/2013] [Accepted: 05/24/2013] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION Nontuberculous mycobacteria (NTM) have emerged as critical opportunistic pathogens of lung diseases recently. Patients with preexisting bronchiectasis are susceptible to NTM. Nevertheless, patients with preexisting bronchiectasis are susceptible to NTM but the prevalence of NTM pulmonary infection in different species and geographical areas is still not fully understood. MATERIAL AND METHODS The relevant data of the prevalence of NTM in patients with bronchiectasis were retrieved by searching the main databases such as PubMed, MEDLINE, Cochrane Library, and EMBASE. This meta-analysis was performed using Rev. Man 5.1 and Stata 11.0 software. The collected information of NTM prevalence was chosen as the effect size. RESULTS The results of the meta-analysis showed that the overall prevalence of NTM was 9.3% in patients with bronchiectasis. The further stratification of subgroup analysis indicated that the combined prevalence of NTM was higher in studies whose "sample size" was more than or equal to 100 (p = 0.002), in studies in which "time of study" was after or equal to 2002 (p < 0.001), in studies in which "participants' geographic location" was Asian (p < 0.001) and in studies whose "method of study" was retrospective (p = 0.002) as well, compared with corresponding groups. CONCLUSIONS Our findings suggested that the prevalence NTM infection is high in patients with bronchiectasis. A larger number of definitive randomized trials are still required to assess this research issue.
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Affiliation(s)
- Haiqing Chu
- Department of Respiratory Disease, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Lan Zhao
- Department of Respiratory Disease, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Heping Xiao
- Department of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Zhemin Zhang
- Department of Respiratory Disease, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jinbo Zhang
- Department of Respiratory Disease, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Tao Gui
- Department of Respiratory Disease, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Sugang Gong
- Department of Respiratory Disease, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Liyun Xu
- Department of Respiratory Disease, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xiwen Sun
- Department of Radiology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
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17
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Lai CC, Hsueh PR. Diseases caused by nontuberculous mycobacteria in Asia. Future Microbiol 2014; 9:93-106. [PMID: 24328383 DOI: 10.2217/fmb.13.138] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The isolation rate of nontuberculous mycobacteria (NTM) species and the prevalence of NTM-associated diseases are on the rise in Asian, as well as in Western countries; however, the species distribution of NTM isolates and the types of diseases caused by NTM species vary from region to region. In this review, we present an update on the epidemiology of NTM in Asia. We demonstrate that the distribution of NTM species varies within Asia and differs from that in North America and Europe. In addition, the clinical manifestations of NTM diseases include respiratory tract infections, disseminated infections, skin and soft tissue infections, lymphadenitis, empyema, ocular infections, CNS infections and genitourinary infections. Finally, the rate of adaptive resistance of anti-NTM antimicrobial agents remains high and may be associated with a poor outcome for patients with NTM diseases.
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Affiliation(s)
- Chih-Cheng Lai
- Department of Intensive Care Medicine, Chi Mei Medical Center, Liouying, Tainan, Taiwan
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18
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Nontuberculous mycobacterial infection is associated with increased respiratory failure: a nationwide cohort study. PLoS One 2014; 9:e99260. [PMID: 24918925 PMCID: PMC4053398 DOI: 10.1371/journal.pone.0099260] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Accepted: 05/13/2014] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND AND PURPOSE Population study on relationship between nontuberculous mycobacterial (NTM) infection and respiratory failure (RF) is limited. This study evaluated the RF risk, including acute respiratory failure (ARF), chronic respiratory failure (CRF) and ARF on CRF, in patients with NTM infection in Taiwan. METHODS We used the National Health Insurance Research Database of Taiwan to identify 3864 newly diagnosed NTM patients (NTM cohort) from 1999 to 2009, and 15456 non-NTM patients (non-NTM cohort), frequency matched by demographic status for comparison. Incidence and hazard of developing RF were measured by the end of 2010. RESULTS The incidence rate of RF was 4.31-fold higher in the NTM cohort than in the non-NTM cohort (44.0 vs.10.2 per 1000 person-years), with an adjusted hazard ratio (HR) of 3.11 (95% CI: 2.73-3.54). The cumulative proportional incidence of RF was 10% higher in the NTM cohort than in the non-NTM cohort (P<0.0001). The RF risk was much greater within 6 months after the diagnosis of NTM infection with a HR of 7.45 (95% CI = 5.50-10.09). Age-specific comparison showed that the younger NTM patients had a higher HR of RF than the elderly NTM patients (HR: 4.42, 95% CI: 3.28-5.96 vs. HR: 2.52, 95% CI: 2.17-2.92). Comorbidity increased the risk of RF in both cohorts, particularly in those with chronic obstructive pulmonary disease. CONCLUSION Our study suggests patients with NTM infection are at a high risk of RF. The risk appears much greater soon after patients diagnosed with NTM infection.
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Abstract
BACKGROUND Mycobacterium abscessus has been associated with respiratory tract infections, localized skin and soft tissue infections and sepsis. However, outbreaks of M. abscessus are rare. AIM to report an outbreak of M. abscessus causing respiratory tract infections in a Pediatric Intensive Care Unit (PICU) in Kuwait, its investigation and control measures. METHODS Respiratory secretions were obtained from ventilator-dependent patients showing signs of sepsis, including fever, malaise and weight loss. The specimens were cultured on appropriate routine media. After the results of the sample taken from the index case as acid-fast bacilli positive, all patients were screened for M. abscessus carriage. Isolates were identified by INNO-LiPA Mycobacteria v2 line probe assay and DNA sequencing. Molecular fingerprinting DiversiLab strain typing was performed on the isolates. Epidemiologic investigation was conducted during the outbreak. FINDINGS the outbreak affected 5 patients, 4 of whom had severe infections including 1 patient with septicemia. Asymptomatic carriage of outbreak strain was found in 1 patient. All environmental samples were negative for M. abscessus but some were positive for M. gordonae and M. fortuitum. The source could not be identified. Stringent infection control measures were put in place, including reemphasizing hand hygiene and closure of the Pediatric Intensive Care Unit to new admissions. A year later, no further case has occurred after the last case. CONCLUSION To our knowledge, this is the first report of a hospital-acquired outbreak of respiratory tract infection caused by M. abscessus in a Pediatric Intensive Care Unit. In the absence of definite source identification, reinforcement of standard infection control guidelines was successful in containing the outbreak.
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Shu CC, Ato M, Wang JT, Jou R, Wang JY, Kobayashi K, Lai HC, Yu CJ, Lee LN, Luh KT. Sero-diagnosis of Mycobacterium avium complex lung disease using serum immunoglobulin A antibody against glycopeptidolipid antigen in Taiwan. PLoS One 2013; 8:e80473. [PMID: 24260398 PMCID: PMC3832490 DOI: 10.1371/journal.pone.0080473] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Accepted: 10/12/2013] [Indexed: 11/25/2022] Open
Abstract
Background Lung disease (LD) due to non-tuberculous mycobacteria is an important clinical concern. Mycobacterium avium complex (MAC) is one of the most common causative agents but the diagnosis of MAC-LD remains challenging. Detection of serum IgA antibody against MAC glycopeptidolipid (GPL) has recently been shown to improve the diagnosis of MAC-LD, but has yet to be validated worldwide. Methods This prospective study was conducted in a tertiary referral center in northern Taiwan and enrolled patients with MAC-LD, MAC contamination, other lung diseases, and control subjects. Serum immunoglobulin A (IgA) antibody against MAC-GPL was detected in the participants and its specificity and sensitivity was assessed. Results There were 56 patients with MAC-LD, 11 with MAC contamination, 13 M. kansasii-LD, 26 LD due to rapidly-growing mycobacteria (RGM), 48 pulmonary tuberculosis, and 42 household contacts of patients with TB. Patients with MAC-LD were older and 32% of them had an underlying co-morbidity. By logistic regression, serum MAC-GPL IgA level was an independent predictor of MAC-LD among the study subjects and those with culture-positive specimens for MAC. By the receiver operating characteristic curve, serum MAC-GPL IgA had a good power to discriminate MAC-LD from MAC contamination. Under the optimal cut-off value of 0.73 U/mL, its sensitivity and specificity were 60% and 91%, respectively. Among MAC-LD patients, presence of co-morbidity was associated with MAC-GPL <0.73 U/ml in logistic regression analysis. Conclusions Measurement of serum anti-MAC-GPL IgA level is useful for the diagnosis of MAC-LD. However, its implement in clinical practice for immuno-compromised hosts needs careful consideration.
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Affiliation(s)
- Chin-Chung Shu
- Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
- Department of Traumatology, National Taiwan University Hospital, Taipei, Taiwan
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Manabu Ato
- Department of Immunology, National Infectious Diseases, Tokyo, Japan
| | - Jann-Tay Wang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Ruwen Jou
- Center for Research, Diagnostics and Vaccine Development, Centers for Disease Control, Taipei, Taiwan
| | - Jann-Yuan Wang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
- * E-mail: (JYW); (KK)
| | - Kazuo Kobayashi
- Department of Medicine, Asoka Hospital, Tokyo, Japan
- * E-mail: (JYW); (KK)
| | - Hsin-Chih Lai
- Department of Medical Biotechnology and Laboratory Science, Chang Gung University, Tao-Yuan, Taiwan
| | - Chong-Jen Yu
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Li-Na Lee
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
- Department of Laboratory Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Kwen-Tay Luh
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
- Department of Laboratory Medicine, National Taiwan University Hospital, Taipei, Taiwan
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Hagan G, Nathani N. Clinical review: tuberculosis on the intensive care unit. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2013; 17:240. [PMID: 24093433 PMCID: PMC4056111 DOI: 10.1186/cc12760] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Rates of tuberculosis (TB) are increasing in most west European nations. Patients with TB can be admitted to an ICU for a variety of reasons, including respiratory failure, multiorgan failure and decreased consciousness associated with central nervous system disease. TB is a treatable disease but the mortality for patients admitted with TB to an ICU remains high. Management challenges exist in establishing a prompt diagnosis and administering effective treatment on the ICU with potentially poor gastric absorption and high rates of organ dysfunction and drug toxicity. In this review reasons for ICU admission, methods of achieving a confident diagnosis through direct and inferred methods, anti-tuberculosis treatment (including steroid and other adjuvant therapies) and specific management problems with particular relevance to the intensivist are discussed. The role of therapeutic drug monitoring, judicious use of alternative regimes in the context of toxicity or organ dysfunction and when to suspect paradoxical tuberculosis reactions are also covered. Diagnostic and therapeutic algorithms are proposed to guide ICU doctors in the management of this sometimes complicated disease.
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22
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Legesse M, Mamo G, Ameni G, Medhin G, Bjune G, Abebe F. Community-based prevalence of undiagnosed mycobacterial diseases in the Afar Region, north-east Ethiopia. Int J Mycobacteriol 2013; 2:94-102. [PMID: 26785896 DOI: 10.1016/j.ijmyco.2013.04.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 03/29/2013] [Accepted: 04/01/2013] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Information on the community-based prevalence of tuberculosis (TB) in different settings is vital for planning, execution and evaluation of strategies to control the disease. OBJECTIVE To assess community-based prevalence of undetected active pulmonary TB (PTB) in pastoralists of the Amibara District. METHODS Between March and April 2010, a community-based cross-sectional survey of undiagnosed active PTB was conducted in the pastoralists of the Amibara District of the Afar Region, north-east Ethiopia. The study participants were interviewed for symptoms suggestive of PTB using a structured questionnaire. Sputum samples were collected and processed for smear microscopy and culture. Mycobacterium genus typing was performed using a multiplex polymerase chain reaction (PCR). RESULTS Out of 222 individuals who had symptoms suggestive of PTB, 4 (1.8%) were found positive by smear microscopy, while mycobacterial growth was observed on 62 (27.9%) samples. Mycobacterium genus typing was carried out for 42 of these 62 samples; 39 (92.9%) gave a positive signal for the genus Mycobacterium. Of these, 23 (59%) isolates proved to be members of the Mycobacterium tuberculosis (Mtb) complex, while the remaining 16 (41.0%) were found to be members of non-tuberculous Mycobacteria (NTM) species. CONCLUSION Sputum culture is highly sensitive, and it is the gold standard for the bacteriological diagnosis of PTB, while smear microscopy is less sensitive to detect acid fast bacilli (AFB) in stained sputum smears. The findings of the present study warrant the strengthening of culture facility services in the study area. The study also provides important preliminary information on the status of NTM infection in the pastoral setting. Nevertheless, further investigations into the species identification of the NTM infections would be useful in the study area.
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Affiliation(s)
- Mengistu Legesse
- Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Ethiopia; Department of Community Medicine, Institute for Health and Society, University of Oslo, Norway.
| | - Gezahegne Mamo
- Faculty of Veterinary Medicine, Addis Ababa University, Ethiopia; Department of Community Medicine, Institute for Health and Society, University of Oslo, Norway
| | - Gobena Ameni
- Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Ethiopia
| | - Girmay Medhin
- Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Ethiopia
| | - Gunnar Bjune
- Department of Community Medicine, Institute for Health and Society, University of Oslo, Norway
| | - Fekadu Abebe
- Department of Community Medicine, Institute for Health and Society, University of Oslo, Norway
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23
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Kotilainen H, Valtonen V, Tukiainen P, Poussa T, Eskola J, Järvinen A. Prognostic value of American Thoracic Society criteria for non-tuberculous mycobacterial disease: a retrospective analysis of 120 cases with four years of follow-up. ACTA ACUST UNITED AC 2012; 45:194-202. [PMID: 23039965 DOI: 10.3109/00365548.2012.722227] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
BACKGROUND Non-tuberculous mycobacteria (NTM) cause disease in healthy and immunocompromised patients. The American Thoracic Society (ATS) 2007 diagnostic criteria were devised to distinguish NTM disease from airway colonization. The aim of this study was to evaluate the prognostic value of the ATS criteria. METHODS In a 4-y follow-up study that ended on 8 June 2006, we retrospectively analyzed the symptoms, underlying diseases, and mortality of 120 adult non-HIV patients with NTM culture findings obtained between 1990 and 1998. We categorized the patients according to the 2007 ATS NTM case definition into positive and negative groups. RESULTS Only 61/120 patients (51%) fulfilled the ATS criteria for NTM disease. As compared to ATS-negative subjects, the ATS-positive group showed lower age, a higher proportion of females, and fewer fatal underlying diseases. Among ATS-negative subjects, 46/59 (78%) did not fulfil the microbiological criteria and 43/59 (73%) did not fulfil the radiological criteria. Mycobacterium avium complex (MAC) comprised 61% of isolations in the ATS-positive and 47% in the ATS-negative group (p = 0.15). No significant difference in median survival time was found between the groups: ATS-positive 7.4 y (95% confidence interval (CI) 0.2-14.6) and ATS-negative 5.3 y (95% CI 3.0-7.6). No significant difference was found in symptoms except fatigue, which was more common in the ATS-positive (56% vs 37%, p = 0.04). Symptoms lasted for less than a year in 48%, which suggests a more rapid disease progression than has previously been reported. CONCLUSIONS The fulfillment of ATS criteria was poorly associated with any difference in prognosis, and based on our findings would be a poor prognostic marker.
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Affiliation(s)
- Hannele Kotilainen
- Division of Infectious Diseases, Department of Medicine, Helsinki University Central Hospital, Helsinki, Finland.
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Shu CC, Wang JT, Wang JY, Yu CJ, Lee LN. Mycobacterial peritonitis: difference between non-tuberculous mycobacteria and Mycobacterium tuberculosis. Clin Microbiol Infect 2012; 18:246-52. [DOI: 10.1111/j.1469-0691.2011.03547.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Shu CC, Lee CH, Hsu CL, Wang JT, Wang JY, Yu CJ, Lee LN. Clinical Characteristics and Prognosis of Nontuberculous Mycobacterial Lung Disease with Different Radiographic Patterns. Lung 2011; 189:467-74. [DOI: 10.1007/s00408-011-9321-4] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Accepted: 09/08/2011] [Indexed: 11/30/2022]
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Simons S, van Ingen J, Hsueh PR, Van Hung N, Dekhuijzen PNR, Boeree MJ, van Soolingen D. Nontuberculous mycobacteria in respiratory tract infections, eastern Asia. Emerg Infect Dis 2011. [PMID: 21392422 PMCID: PMC3165997 DOI: 10.3201/eid1703100604] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
To characterize the distribution of nontuberculous mycobacteria (NTM) species isolated from pulmonary samples from persons in Asia and their association with pulmonary infections, we reviewed the literature. Mycobacterium avium complex bacteria were most frequently isolated (13%-81%) and were the most common cause of pulmonary NTM disease (43%-81%). Also pathogenic were rapidly growing mycobacteria (M. chelonae, M. fortuitum, M. abscessus). Among all NTM isolated from pulmonary samples, 31% (582/1,744) were considered clinically relevant according to American Thoracic Society diagnostic criteria. Most patients were male (79%) and had a history of tuberculosis (37%). In Asia, high prevalence of rapidly growing mycobacteria and a history of tuberculosis are distinct characteristics of pulmonary NTM disease. This geographic variation is not well reflected in the American Thoracic Society criteria for NTM infections and could be incorporated in future guidelines.
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Affiliation(s)
- Sami Simons
- Department of Pulmonary Diseases, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands.
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Simons S, van Ingen J, Hsueh PR, Van Hung N, Dekhuijzen PNR, Boeree MJ, van Soolingen D. Nontuberculous mycobacteria in respiratory tract infections, eastern Asia. Emerg Infect Dis 2011; 17:343-9. [PMID: 21392422 DOI: 10.3201/eid1703.100604] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
To characterize the distribution of nontuberculous mycobacteria (NTM) species isolated from pulmonary samples from persons in Asia and their association with pulmonary infections, we reviewed the literature. Mycobacterium avium complex bacteria were most frequently isolated (13%-81%) and were the most common cause of pulmonary NTM disease (43%-81%). Also pathogenic were rapidly growing mycobacteria (M. chelonae, M. fortuitum, M. abscessus). Among all NTM isolated from pulmonary samples, 31% (582/1,744) were considered clinically relevant according to American Thoracic Society diagnostic criteria. Most patients were male (79%) and had a history of tuberculosis (37%). In Asia, high prevalence of rapidly growing mycobacteria and a history of tuberculosis are distinct characteristics of pulmonary NTM disease. This geographic variation is not well reflected in the American Thoracic Society criteria for NTM infections and could be incorporated in future guidelines.
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Affiliation(s)
- Sami Simons
- Department of Pulmonary Diseases, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands.
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Simons S, van Ingen J, Hsueh PR, Van Hung N, Dekhuijzen PR, Boeree MJ, van Soolingen D. Nontuberculous Mycobacteria in Respiratory Tract Infections, Eastern Asia. Emerg Infect Dis 2011. [DOI: 10.3201/eid170310060] [Citation(s) in RCA: 129] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Shu CC, Wang JT, Wang JY, Lee LN, Yu CJ. In-hospital outcome of patients with culture-confirmed tuberculous pleurisy: clinical impact of pulmonary involvement. BMC Infect Dis 2011; 11:46. [PMID: 21338482 PMCID: PMC3051910 DOI: 10.1186/1471-2334-11-46] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2010] [Accepted: 02/21/2011] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Outcomes for hospitalized patients with tuberculous pleurisy (TP) have rarely been reported, and whether or not pulmonary involvement affects outcomes is uncertain. This study aimed to analyze the in-hospital mortality rate of culture-confirmed TP with an emphasis on the clinical impact of pulmonary involvement. METHODS Patients who were hospitalized for pleural effusion (PE) of unconfirmed diagnosis and finally diagnosed as TP were identified. We classified them according to the disease extent: isolated pleurisy (isolated pleurisy group) and pleurisy with pulmonary involvement (pleuro-pulmonary group). RESULTS Among the 205 patients hospitalized before the diagnosis was established, 51 (24.9%) belonged to the isolated pleurisy group. Compared to the pleuro-pulmonary group, patients in the isolated pleurisy group were younger, had fewer underlying co-morbidities, and presented more frequently with fever and chest pain. Fewer patients in the isolated pleurisy group had hypoalbuminemia (< 3.5 g/dL) and anemia. The two groups were similar with regards to PE analysis, resistance pattern, and timing of anti-tuberculous treatment. Patients who had a typical pathology of TP on pleural biopsy received anti-tuberculous treatment earlier than those who did not, and were all alive at discharge. The isolated pleurisy group had a lower in-hospital mortality rate, a shorter length of hospital stay and better short-term survival. In addition, the presence of underlying comorbidities and not receiving anti-tuberculous treatment were associated with a higher in-hospital mortality rate. CONCLUSION In culture-confirmed tuberculous pleurisy, those with pulmonary involvement were associated with a higher in-hospital mortality rate. A typical pathology for TP on pleura biopsy was associated with a better outcome.
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Affiliation(s)
- Chin-Chung Shu
- Department of Internal Medicine, National Taiwan University Hospital, Taipei city, Taiwan
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Hsiao CH, Lin YT, Lai CC, Chou CH, Hsueh PR. Identification of nontuberculous mycobacterial infection by IS6110 and hsp65 gene analysis on lung tissues. Diagn Microbiol Infect Dis 2010; 68:241-6. [PMID: 20850247 DOI: 10.1016/j.diagmicrobio.2010.05.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2010] [Revised: 04/26/2010] [Accepted: 05/06/2010] [Indexed: 11/30/2022]
Abstract
The clinical, histologic, and radiographic presentations of nontuberculous mycobacterial (NTM) lung disease are usually indistinguishable from those of reactivated pulmonary tuberculosis (TB), so it remains a great challenge for the clinician to make treatment decisions for patients with old TB and a positive culture result for NTM. This study investigated whether the mycobacterial specific heat shock protein 65 (hsp65) and Mycobacterium tuberculosis (MTB)-specific IS6110 gene would present in pulmonary lesions of patients with NTM pulmonary infection. Formalin-fixed and paraffin-embedded (FFPE) tissue blocks of 24 patients with NTM infections treated at the hospital from 1998 to 2008 were included. Mycobacterial hsp65 gene was amplified in 20 of the 24 patients, and the species identified by sequencing was consistent with corresponding culture results in 12 of these patients. MTB-specific IS6110 gene was detected in 3 of the 7 patients who had old TB and a subsequent diagnosis of fibrocavitary NTM lung disease. Polymerase chain reaction (PCR) analysis of hsp65 gene also confirmed the presence of MTB genes in 2 of these 3 patients. Our results indicate that PCR amplification and sequencing of the mycobacterial hsp65 gene is a sensitive assay for identification of NTM species in FFPE materials. However, consistent results of PCR analysis, microbiology study, histologic manifestations, radiology, and clinical presentation are important for correct diagnosis of NTM pulmonary infection. The presence of MTB gene in patients with fibrocavitary NTM lung lesions poses a clinical dilemma for deciding concurrent treatment TB and NTM infection.
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Affiliation(s)
- Cheng-Hsiang Hsiao
- Department of Pathology, National Taiwan University College of Medicine, National Taiwan University Hospital, Taipei, Taiwan
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Shu CC, Wang JT, Lee CH, Wang JY, Lee LN, Yu CJ. Predicting results of mycobacterial culture on sputum smear reversion after anti-tuberculous treatment: a case control study. BMC Infect Dis 2010; 10:48. [PMID: 20205743 PMCID: PMC2845134 DOI: 10.1186/1471-2334-10-48] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2009] [Accepted: 03/06/2010] [Indexed: 11/18/2022] Open
Abstract
Background Little is currently known regarding sputum smear reversion (acid-fast smear becomes positive again after negative conversion) during anti-tuberculous treatment. This study aimed to evaluate its occurrence in patients with pulmonary tuberculosis (TB) and identify factors predicting results of mycobacterial culture for smear-reversion of sputum samples. Methods The retrospective review was performed in a tertiary referral center and a local teaching hospital in Taiwan. From 2000 to 2007, patients with smear-positive culture-confirmed pulmonary TB experiencing smear reversion after 14 days of anti-tuberculous treatment were identified. Results The 739 patients with smear-positive pulmonary TB had 74 (10%) episodes of sputum smear reversion that grew Mycobacterium tuberculosis in 22 (30%) (Mtb group). The remaining 52 episodes of culture-negative sputum samples were classified as the non-Mtb group. The anti-tuberculous regimen was modified after confirming smear reversion in 15 (20%). Fourteen episodes in the Mtb group and 15 in the non-Mtb group occurred during hospitalization. All were admitted to the negative-pressure rooms at the time of smear reversion. Statistical analysis showed that any TB drug resistance, smear reversion within the first two months of treatment or before culture conversion, and the absence of radiographic improvement before smear reversion were associated with the Mtb group. None of the smear reversion was due to viable M. tuberculosis if none of the four factors were present. Conclusions Sputum smear reversion develops in 10% of patients with smear-positive pulmonary TB, with 30% due to viable M. tuberculosis bacilli. Isolation and regimen modification may not be necessary for all drug-susceptible patients who already have radiographic improvement and develop smear reversion after two months of treatment or after sputum culture conversion.
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Affiliation(s)
- Chin-Chung Shu
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
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Antonelli M, Azoulay E, Bonten M, Chastre J, Citerio G, Conti G, De Backer D, Lemaire F, Gerlach H, Groeneveld J, Hedenstierna G, Macrae D, Mancebo J, Maggiore SM, Mebazaa A, Metnitz P, Pugin J, Wernerman J, Zhang H. Year in review in Intensive Care Medicine, 2008: I. Brain injury and neurology, renal failure and endocrinology, metabolism and nutrition, sepsis, infections and pneumonia. Intensive Care Med 2008; 35:30-44. [PMID: 19066847 PMCID: PMC7094904 DOI: 10.1007/s00134-008-1371-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2008] [Accepted: 12/01/2008] [Indexed: 12/16/2022]
Affiliation(s)
- Massimo Antonelli
- Department of Intensive Care and Anesthesiology, Policlinico Universitario A. Gemelli, Università Cattolica del Sacro Cuore, Largo A. Gemelli, 8, 00168, Rome, Italy.
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