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Van Braeckel E, Bosteels C. Growing from common ground: nontuberculous mycobacteria and bronchiectasis. Eur Respir Rev 2024; 33:240058. [PMID: 38960614 PMCID: PMC11220627 DOI: 10.1183/16000617.0058-2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Accepted: 05/28/2024] [Indexed: 07/05/2024] Open
Abstract
Bronchiectasis and nontuberculous mycobacteria (NTM) are intricately intertwined, with NTM capable of being both a cause and consequence of bronchiectatic disease. This narrative review focuses on the common ground of bronchiectasis and NTM pulmonary disease (NTM-PD) in terms of diagnostic approach, underlying risk factors and treatment strategies. NTM-PD diagnosis relies on a combination of clinical, radiological and microbiological criteria. Although their epidemiology is complicated by detection and reporting biases, the prevalence and pathogenicity of NTM species vary geographically, with Mycobacterium avium complex and Mycobacterium abscessus subspecies most frequently isolated in bronchiectasis-associated NTM-PD. Diagnosis of nodular bronchiectatic NTM-PD should prompt investigation of host factors, including disorders of mucociliary clearance, connective tissue diseases and immunodeficiencies, either genetic or acquired. Treatment of NTM-PD in bronchiectasis involves a multidisciplinary approach and considers the (sub)species involved, disease severity and comorbidities. Current guideline-based antimicrobial treatment of NTM-PD is considered long, cumbersome and unsatisfying in terms of outcomes. Novel treatment regimens and strategies are being explored, including rifampicin-free regimens and inclusion of clofazimine and inhaled antibiotics. Host-directed therapies, such as immunomodulators and cytokine-based therapies, might enhance antimycobacterial immune responses. Optimising supportive care, as well as pathogen- and host-directed strategies, is crucial, highlighting the need for personalised approaches tailored to individual patient needs. Further research is warranted to elucidate the complex interplay between host and mycobacterial factors, informing more effective management strategies.
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Affiliation(s)
- Eva Van Braeckel
- Department of Respiratory Medicine, Ghent University Hospital, Ghent, Belgium
- Respiratory Infection and Defense Lab (RIDL), Department of Internal Medicine and Paediatrics, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
- European Reference Network on rare respiratory diseases (ERN-LUNG)
| | - Cédric Bosteels
- Department of Respiratory Medicine, Ghent University Hospital, Ghent, Belgium
- Respiratory Infection and Defense Lab (RIDL), Department of Internal Medicine and Paediatrics, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
- European Reference Network on rare respiratory diseases (ERN-LUNG)
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2
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Ghaffari K, Falahati V, Motallebirad T, Safarabadi M, Tashakor AH, Azadi D. Microbiological and Molecular Study of Paranasal Sinus Infections of Children with Malignancy and Unknown Origin Fever in Markazi Province, Iran. CURRENT THERAPEUTIC RESEARCH 2024; 100:100745. [PMID: 38617893 PMCID: PMC11015527 DOI: 10.1016/j.curtheres.2024.100745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 03/13/2024] [Indexed: 04/16/2024]
Abstract
Background Children with malignancies are vulnerable to various infections, including sinus infections. Sinusitis is primarily caused by bacterial infections, followed by fungal infections. Due to this, evaluating the occurrence, diversity, and antibiotic susceptibility patterns of bacterial species that cause paranasal sinus infections in children with malignancy and unexplained fever is important. Objective To investigate the bacterial species accountable for sinusitis in children with malignancy and unexplained fever, and determine their susceptibility to antibiotics. Methods The study involved collecting 90 sinus samples from children aged 5 to 15 years with malignancy in Arak City, Iran. The isolates were identified using a combination of phenotypic, biochemical, and molecular techniques, including specific polymerase chain reaction and 16S ribosomal RNA gene sequencing. Drug susceptibility testing was performed following the Clinical & Laboratory Standards Institute 2021 guidelines. Results A total of 36 isolates (40%) were obtained, including 4 isolates of Nocardia (11.12%), 4 isolates of Escherichia coli (11.12%), 3 isolates of Klebsiella pneumoniae (8.33%), 5 isolates of Pseudomonas aeruginosa (13.88%), 3 isolates of Acinetobacter baumannii (8.33%), 4 isolates of Staphylococcus aureus (11.12%), 3 isolates of Staphylococcus epidermidis (8.33%), 5 isolates of Streptococcus agalactiae (13.88%), 2 isolates of Streptococcus pneumoniae (5.55%), and 3 isolates of Enterococcus faecium (8.33%). The isolates showed the most sensitivity to imipenem and trimethoprim-sulfamethoxazole and the least sensitivity to erythromycin and tetracycline. Conclusions The findings of the study indicate that sinusitis can contribute to fever of unknown origin in patients with cancer. Therefore, it is recommended to use a combination of molecular and phenotypic methods for accurate identification of isolates. This approach can provide more reliable and precise results, leading to better diagnosis and treatment of sinusitis infections in children with malignancy.
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Affiliation(s)
- Kazem Ghaffari
- Department of Basic Sciences, Khomein University of Medical Sciences, Khomein, Iran
- Student Research Comittee, Khomein University Of Medical Sciences, Khomein, Iran
| | - Vahid Falahati
- Department of Pediatrics, Arak University of Medical Sciences, Arak, Iran
| | - Tahereh Motallebirad
- Department of Basic Sciences, Khomein University of Medical Sciences, Khomein, Iran
| | - Mahdi Safarabadi
- Department of Nursing, Khomein University of Medical Sciences, Khomein, Iran
| | - Amir Hossein Tashakor
- Department of Microbiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Davood Azadi
- Department of Basic Sciences, Khomein University of Medical Sciences, Khomein, Iran
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3
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Toth E, Waller JL, Bollag WB, Siddiqui B, Mohammed A, Kheda M, Padala S, Young L, Baer SL, Tran S. Non-tuberculous mycobacterial infections in patients with end-stage renal disease: Prevalence, risk factors, and mortality. J Investig Med 2023; 71:707-715. [PMID: 36202430 DOI: 10.1136/jim-2022-002462] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/10/2022] [Indexed: 01/06/2023]
Abstract
Non-tuberculous mycobacterial (NTM) disease has increased in prevalence in the USA, however, little is known on NTM in the population with end-stage renal disease (ESRD). Thus, we investigated patients with ESRD to determine risk factors for NTM disease and mortality. We queried the United States Renal Data System from 2005 to 2015 using International Classification of Diseases (ICD)-9/ICD-10 codes to identify NTM and risk factors. Logistic regression was used to examine the association of risk factors with NTM and Cox proportional hazards modeling was used to assess the association of NTM with mortality. Of 1,068,634 included subjects, 3232 (0.3%) individuals were identified with any NTM diagnosis. Hemodialysis versus peritoneal dialysis (OR=0.10, 95% CI=0.08 to 0.13) was protective for NTM, whereas black (OR=1.27, 95% CI=1.18 to 1.37) or other race compared with white race (OR=1.39, 95% CI=1.21 to 1.59) increased the risk of NTM. HIV (OR=15.71, 95% CI=14.24 to 17.33), history of any transplant (OR=4.25, 95% CI=3.93 to 4.60), kidney transplant (OR=3.00, 95% CI=2.75 to 3.27), diabetes (OR=1.32, 95% CI=1.23 to 1.43), rheumatologic disease (OR=1.92, 95% CI=1.77 to 2.08), and liver disease (OR=2.09, 95% CI=1.91 to 2.30) were associated with increased risk for NTM diagnosis. In multivariable analysis, there was a significant increase in mortality with any NTM diagnosis (HR=1.83, 95% CI=1.76 to 1.91, p≤0.0001). Controlling for relevant demographic and clinical risk factors, there was an increased risk of mortality associated with any diagnosis of NTM. Early diagnosis and treatment of NTM infection may improve survival in patients with ESRD.
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Affiliation(s)
- Eszter Toth
- Department of Medicine, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Jennifer L Waller
- Department of Biostatistics and Epidemiology, Augusta University, Augusta, Georgia, USA
| | - Wendy B Bollag
- Department of Physiology, Medical College of Georgia, Augusta, Georgia, USA
- Research, Charlie Norwood VA Medical Center, Augusta, Georgia, USA
| | - Budder Siddiqui
- Department of Medicine, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Azeem Mohammed
- Department of Medicine, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Mufaddal Kheda
- Department of Medicine, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Sandeep Padala
- Department of Medicine, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Lufei Young
- College of Nursing, Augusta University, Augusta, Georgia, USA
| | - Stephanie L Baer
- Department of Medicine, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
- Infection Control, Charlie Norwood VA Medical Center, Augusta, GA, USA
| | - Sarah Tran
- Department of Medicine, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
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Park H, Kang YA, Park Y. Disseminated Nontuberculous Mycobacterial Infection in a Tertiary Referral Hospital in South Korea: A Retrospective Observational Study. Yonsei Med J 2023; 64:612-617. [PMID: 37727920 PMCID: PMC10522876 DOI: 10.3349/ymj.2023.0046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 06/22/2023] [Accepted: 07/17/2023] [Indexed: 09/21/2023] Open
Abstract
PURPOSE Disseminated nontuberculous mycobacterial (D-NTM) disease occurs primarily in immunocompromised hosts. However, these cases have rarely been reported in South Korea. This study aimed to describe the clinical manifestations, disease course, and underlying immune deficiencies of patients with D-NTM disease. MATERIALS AND METHODS We retrospectively reviewed the cases of D-NTM disease from January 2005 to December 2019 at a tertiary referral hospital in South Korea. D-NTM disease was defined as a bloodstream infection or infection of two or more non-contiguous body organs with species identification. RESULTS Of the 53342 mycobacterial samples from 23338 patients, extrapulmonary NTM was detected in 104 patients, and 3 (2.9%) were diagnosed with D-NTM disease. Mycobacterium avium was isolated from two patients, while M. abscessus subspecies abscessus was identified in one. The patients were aged between 18 and 25 years, and two patients were male. All patients were immunocompromised - one received lung transplantation, one was diagnosed with anhidrotic ectodermal dysplasia with T-cell immune deficiency, and one had monocytopenia and mycobacterial infection syndrome associated with GATA2 mutations. All patients underwent a standard macrolide-based regimen for >5 months, and their sputum tested negative. However, one patient died of bacterial sepsis, while the other two survived. CONCLUSION D-NTM disease is rare in a tertiary referral center in South Korea. They occur primarily in immunocompromised patients at a relatively young age. Careful investigation of the underlying immune status is required when treating patients with D-NTM disease.
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Affiliation(s)
- Hyejin Park
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Yonsei University College of Medicine, Severance Hospital, Seoul, Korea
| | - Young Ae Kang
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Yonsei University College of Medicine, Severance Hospital, Seoul, Korea
- Institute of Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, Korea
| | - Youngmok Park
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Yonsei University College of Medicine, Severance Hospital, Seoul, Korea.
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Case series of Rapidly growing mycobacterial Post-Operative surgical site infection in Kidney transplant recipients. IDCases 2022; 30:e01640. [DOI: 10.1016/j.idcr.2022.e01640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 10/10/2022] [Accepted: 10/31/2022] [Indexed: 11/06/2022] Open
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Bacterial and Viral Infections in Liver Transplantation: New Insights from Clinical and Surgical Perspectives. Biomedicines 2022; 10:biomedicines10071561. [PMID: 35884867 PMCID: PMC9313066 DOI: 10.3390/biomedicines10071561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 06/11/2022] [Accepted: 06/27/2022] [Indexed: 01/03/2023] Open
Abstract
End-stage liver disease patients undergoing liver transplantation are prone to develop numerous infectious complications because of immunosuppression, surgical interventions, and malnutrition. Infections in transplant recipients account for the main cause of mortality and morbidity with rates of up to 80%. The challenges faced in the early post-transplant period tend to be linked to transplant procedures and nosocomial infections commonly in bloodstream, surgical, and intra-abdominal sites. Viral infections represent an additional complication of immunosuppression; they can be donor-derived, reactivated from a latent virus, nosocomial or community-acquired. Bacterial and viral infections in solid organ transplantation are managed by prophylaxis, multi-drug resistant screening, risk assessment, vaccination, infection control and antimicrobial stewardship. The aim of this review was to discuss the epidemiology of bacterial and viral infections in liver transplants, infection control issues, as well as surgical frontiers of ex situ liver perfusion.
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7
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Thoracic Infections in Solid Organ Transplants. Radiol Clin North Am 2022; 60:481-495. [DOI: 10.1016/j.rcl.2022.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Vazirani J, Crowhurst T, Morrissey CO, Snell GI. Management of Multidrug Resistant Infections in Lung Transplant Recipients with Cystic Fibrosis. Infect Drug Resist 2021; 14:5293-5301. [PMID: 34916813 PMCID: PMC8670859 DOI: 10.2147/idr.s301153] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Accepted: 11/26/2021] [Indexed: 12/12/2022] Open
Abstract
Cystic fibrosis (CF) is an inherited multisystem disease characterised by bronchiectasis and chronic respiratory infections which eventually cause end stage lung disease. Lung transplantation (LTx) is a well-established treatment option for patients with CF-associated lung disease, improving survival and quality of life. Navigating recurrent infections in the setting of LTx is often difficult, where immune suppression must be balanced against the constant threat of infection. Sepsis/infections are one of the major contributors to post-LTx mortality and multiresistant organisms (eg, Burkholderia cepacia complex, Mycobacterium abscessus complex, Scedosporium spp. and Lomentospora spp.) pose a significant threat to survival. This review will summarize current and novel therapies to assist with the management of multiresistant bacterial, mycobacterial, viral and fungal infections which threaten the CF LTx cohort.
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Affiliation(s)
- Jaideep Vazirani
- Lung Transplant Service, Department of Respiratory Medicine, The Alfred Hospital and Monash University, Melbourne, VIC, Australia
| | - Thomas Crowhurst
- Lung Transplant Service, Department of Respiratory Medicine, The Alfred Hospital and Monash University, Melbourne, VIC, Australia.,Department of Medicine, The University of Adelaide, Adelaide, SA, Australia
| | - C Orla Morrissey
- Department of Infectious Diseases, The Alfred Hospital and Monash University, Melbourne, Vic, Australia
| | - Gregory I Snell
- Lung Transplant Service, Department of Respiratory Medicine, The Alfred Hospital and Monash University, Melbourne, VIC, Australia
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9
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Grimes R, Cherrier L, Nasar A, Nailor MD, Walia R, Goodlet KJ. Outcomes of nontuberculous mycobacteria isolation among lung transplant recipients: A matched case-control with retrospective cohort study. Am J Health Syst Pharm 2021; 79:338-345. [PMID: 34634122 DOI: 10.1093/ajhp/zxab389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
DISCLAIMER In an effort to expedite the publication of articles , AJHP is posting manuscripts online as soon as possible after acceptance. Accepted manuscripts have been peer-reviewed and copyedited, but are posted online before technical formatting and author proofing. These manuscripts are not the final version of record and will be replaced with the final article (formatted per AJHP style and proofed by the authors) at a later time. PURPOSE Lung transplant recipients are at increased risk for acquiring nontuberculous mycobacteria (NTM), but the clinical significance of NTM isolation, particularly among patients not meeting guideline-endorsed diagnostic criteria for NTM pulmonary disease, is unclear. METHODS A case-control study of lung transplant recipients with culture-positive NTM infections treated at a large transplant center during a 7-year period (2013-2019) was performed. RESULTS Twenty-nine cases were matched 1:2 to non-NTM controls. The median time to NTM isolation was 10.7 months post transplant. Only 34.5% of all cases, and half of treated cases, met diagnostic criteria for NTM pulmonary infection. All-cause mortality at 12 months was numerically higher among NTM cases versus controls (20.7% vs 8.6%, P = 0.169); however, no deaths were attributed to NTM. No increase in the 12-month rate of acute rejection was observed (27.6% vs 36.2%, P = 0.477). Recent augmented immunosuppression was associated with increased odds of NTM isolation, while azithromycin prophylaxis was associated with reduced odds of isolation and was not associated with macrolide resistance. Both adverse events and actual or potential drug-drug interactions occurred in more than 90% of treated cases; these events included ocular toxicity, hearing loss, and supratherapeutic calcineurin inhibitor concentrations. Eight of the 14 treated cases (57.1%) required early antibiotic discontinuation due to adverse events or drug-drug interactions. CONCLUSION Among lung transplant recipients, most patients with NTM isolation did not meet guideline criteria for infection and had outcomes similar to non‒NTM-infected patients, which may reflect transient lung colonization by NTM rather than true disease. As adverse events are common with NTM therapy, limiting unnecessary antibiotic treatment represents an area for future antimicrobial stewardship efforts.
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Affiliation(s)
- Razelle Grimes
- Department of Pharmacy Services, St. Joseph's Hospital and Medical Center, Phoenix, AZ, USA
| | - Lauren Cherrier
- Department of Pharmacy Services, St. Joseph's Hospital and Medical Center, Phoenix, AZ, and Division of Transplant Pulmonology, Norton Thoracic Institute, Dignity Health, St. Joseph's Hospital and Medical Center, Phoenix, AZ, USA
| | - Aasya Nasar
- Department of Pharmacy Services, St. Joseph's Hospital and Medical Center, Phoenix, AZ, and Division of Transplant Pulmonology, Norton Thoracic Institute, Dignity Health, St. Joseph's Hospital and Medical Center, Phoenix, AZ, USA
| | - Michael D Nailor
- Department of Pharmacy Services, St. Joseph's Hospital and Medical Center, Phoenix, AZ, USA
| | - Rajat Walia
- Division of Transplant Pulmonology, Norton Thoracic Institute, Dignity Health, St. Joseph's Hospital and Medical Center, Phoenix, AZ, USA
| | - Kellie J Goodlet
- Department of Pharmacy Practice, Midwestern University College of Pharmacy, Glendale, AZ, USA
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Poon YK, La Hoz RM, Hynan LS, Sanders J, Monogue ML. Tedizolid vs Linezolid for the Treatment of Nontuberculous Mycobacteria Infections in Solid Organ Transplant Recipients. Open Forum Infect Dis 2021; 8:ofab093. [PMID: 33884276 PMCID: PMC8047851 DOI: 10.1093/ofid/ofab093] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 03/04/2021] [Indexed: 11/14/2022] Open
Abstract
Background Treatment options for nontuberculous mycobacteria (NTM) infections are limited by the pathogen's intrinsic resistance profile and toxicities. Tedizolid and linezolid display in vitro activity against NTM species. However, safety data and treatment outcomes are limited in the solid organ transplant (SOT) population. Methods This was a single-center retrospective cohort study of adult SOT recipients receiving linezolid or tedizolid for an NTM infection from January 1, 2010, to August 31, 2019. The primary outcome compared the hematologic safety profiles of tedizolid vs linezolid. We also described nonhematological adverse drug events (ADEs) and therapy discontinuation rates. In an exploratory analysis, we assessed symptomatic microbiologic and clinical outcomes in those receiving tedizolid or linezolid for at least 4 weeks. Results Twenty-four patients were included (15 tedizolid, 9 linezolid). No differences were identified comparing the effects of tedizolid vs linezolid on platelet counts, absolute neutrophil counts (ANCs), and hemoglobin over 7 weeks using mixed-effects analysis of variance models. ANC was significantly decreased in both groups after 7 weeks of therapy (P = .04). Approximately 20% of patients in each arm discontinued therapy due to an ADE. Seven of 12 (58%) and 2 of 3 (67%) patients were cured or clinically cured with tedizolid- and linezolid-containing regimens, respectively. Conclusions This study suggests no significant safety benefit of tedizolid over linezolid for the treatment of NTM infections in SOT recipients. Tedizolid or linezolid-containing regimens demonstrated a potential benefit in symptomatic and microbiologic improvement. Larger cohorts are needed to further delineate the comparative role of linezolid and tedizolid for the treatment of NTM infections in SOT recipients.
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Affiliation(s)
- Yi Kee Poon
- Department of Pharmacy, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Ricardo M La Hoz
- Division of Infectious Diseases and Geographic Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Linda S Hynan
- Department of Population & Data Sciences (Biostatistics), University of Texas Southwestern Medical Center, Dallas, Texas, USA.,Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - James Sanders
- Department of Pharmacy, University of Texas Southwestern Medical Center, Dallas, Texas, USA.,Division of Infectious Diseases and Geographic Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Marguerite L Monogue
- Department of Pharmacy, University of Texas Southwestern Medical Center, Dallas, Texas, USA.,Division of Infectious Diseases and Geographic Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
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Davarpanah M, Azadi D, Shojaei H. Prevalence and molecular characterization of non-tuberculous mycobacteria in hospital soil and dust of a developing country, Iran. MICROBIOLOGY-SGM 2020; 165:1306-1314. [PMID: 31613207 DOI: 10.1099/mic.0.000857] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The presence and diversity of mycobacteria that are capable of survival in a harsh and adverse condition, such as hospital environments, have not been comprehensively studied. This study aimed to assess the frequency and diversity of mycobacteria in hospital soil and dust of a developing country using a combination of molecular and conventional methods. A total of 318 hospital dust and soil samples collected from 38 hospitals were analysed using standard protocols for characterization of mycobacteria. The conventional tests were used for preliminary identification and Runyon's classification, the PCR amplification of the hsp65 gene and sequence analyses of 16SrRNA were applied for genus and species identification. In total, 28 samples (8.8 %) were positive for mycobacteria. The isolates included 33 mycobacteria species including 19 rapidly growing and 14 slowly growing organisms. The most prevalent species were M. setense and M. lentiflavum, five isolates (15.1 %) each, M. fortuitum, four isolates (12.12 %) and M. kumamotonense and M. massiliense/abscessus complex three isolates (9.1 %) each, M. arupense and M. frederiksbergense, two isolates (6 %) each. The remaining isolates consisted the single strains of eight various mycobacterium species, the results of our study revealed that soil and dust in hospitals can be the reservoir of mycobacteria. This reaffirms the fact that these organisms due to intrinsic resistance can persist in hospitals and create a threat to patient's health, in particular to those who suffer from weakness of immunity.
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Affiliation(s)
- Masoumeh Davarpanah
- Department of microbiology, school of medicine, Tehran University of Medical Sciences, Tehran, Tehran, Iran
| | - Davood Azadi
- Molecular Medicine Research Center, Faculty of Medicine, Arak University of Medical Sciences, Arak, Iran.,Department of laboratory sciences, Khomein University of Medical Sciences, Khomein, Iran
| | - Hasan Shojaei
- Department of Microbiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
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12
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Pulmonary Mycobacterium Spindle Cell Pseudotumor in Patient With Liver Transplant. Am J Med Sci 2019; 359:42-50. [PMID: 31902440 DOI: 10.1016/j.amjms.2019.10.016] [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: 06/28/2019] [Revised: 10/21/2019] [Accepted: 10/29/2019] [Indexed: 11/23/2022]
Abstract
We report a case of liver transplant patient who presented with lung masses, found to be Mycobacterium spindle cell pseudotumors. The masses demonstrated hypermetabolic activities on positron emission tomography. Core biopsy revealed sheets of spindle histiocytic cells with abundant acid-fast bacilli identified as Mycobacterium avium-intracellulare complex. This finding is a rare presentation of Mycobacterium infection, mainly nontuberculous Mycobaterium. It is characterized by a benign, spindle cell mass-forming reaction. Most of the reported cases had acquired immune deficiency syndrome or organ transplant. Histopathology illustrating the proliferation of spindle cell shaped histiocytes containing numerous acid-fast bacilli is the gold standard for diagnosis. The standard treatment has not been well established; previously reported cases followed the standard treatment for Mycobacterium based on organ involvement. Our case is the first case to our knowledge that reports pulmonary Mycobacterium spindle cell pseudotumors in a liver transplant recipient.
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Chaddha U, Patil PD, Omar A, Walia R, Panchabhai TS. A 47-Year-Old Man With Fever, Dry Cough, and a Lung Mass After Redo Lung Transplantation. Chest 2019; 153:e147-e152. [PMID: 29884277 DOI: 10.1016/j.chest.2017.09.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 08/09/2017] [Accepted: 09/11/2017] [Indexed: 11/29/2022] Open
Abstract
CASE PRESENTATION A 47-year-old man who was a redo double lung transplant recipient (cytomegalovirus [CMV] status: donor positive/recipient positive; Epstein-Barr virus status: donor positive/recipient positive) presented to the hospital with 1 week of generalized malaise, low-grade fevers, and dry cough. His redo lung transplantation was necessitated by bronchiolitis obliterans syndrome, and his previous lung transplantation 5 years earlier was for silicosis-related progressive massive fibrosis. He denied any difficulty breathing or chest pain. There was no history of GI or urinary symptoms, and the patient had no anorexia, weight loss, night sweats, sick contacts, or history of travel. He had a history of 1 earlier episode of CMV viremia that was treated with valganciclovir. His immunosuppressive regimen included tacrolimus, mycophenolate mofetil, and prednisone, and his infection prophylaxis included trimethoprim-sulfamethoxazole, itraconazole, and valganciclovir. Results of a chest radiograph 8 weeks earlier were normal.
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Affiliation(s)
- Udit Chaddha
- Department of Pulmonary, Critical Care and Sleep Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, CA
| | - Pradnya D Patil
- Department of Hematology and Oncology, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
| | - Ashraf Omar
- Department of Pulmonary Medicine, Norton Thoracic Institute, St. Joseph's Hospital and Medical Center, Phoenix, AZ
| | - Rajat Walia
- Department of Pulmonary Medicine, Norton Thoracic Institute, St. Joseph's Hospital and Medical Center, Phoenix, AZ
| | - Tanmay S Panchabhai
- Department of Pulmonary Medicine, Norton Thoracic Institute, St. Joseph's Hospital and Medical Center, Phoenix, AZ.
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14
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Longworth SA, Daly JS. Management of infections due to nontuberculous mycobacteria in solid organ transplant recipients-Guidelines from the American Society of Transplantation Infectious Diseases Community of Practice. Clin Transplant 2019; 33:e13588. [PMID: 31077618 DOI: 10.1111/ctr.13588] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 05/06/2019] [Indexed: 01/06/2023]
Abstract
These updated guidelines from the American Society of Transplantation Infectious Diseases Community of Practice review the epidemiology, diagnosis, prevention, and management of nontuberculous mycobacterial infections in the pre- and post-transplant period. NTM commonly cause one of five different clinical syndromes: pleuropulmonary disease, skin and soft tissue infection, osteoarticular infection, disseminated disease, including that caused by catheter-associated infection, and lymphadenitis. Diagnosis of these infections can be challenging, particularly when they are isolated from nonsterile spaces, owing to their ubiquity in nature. Consequently, diagnosis of pulmonary infections with these pathogens requires fulfillment of microbiologic, radiographic, and clinical criteria to address this concern. A combination of culture and molecular diagnostic techniques is often required to make a species-level identification. Treatment varies depending on the species isolated and is complex, owing to drug toxicities, need for long-term multidrug regimens, and consideration of complex drug-drug interactions between antimicrobials and immunosuppressive agents. Given these treatment challenges, efforts should be made in both the hospital and community settings to limit exposure to these pathogens to the extent feasible.
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Affiliation(s)
- Sarah A Longworth
- Division of Infectious Disease, Hospital of University of Pennsylvania, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Jennifer S Daly
- UMass Memorial Health Care, University of Massachusetts Medical School, Worcester, Massachusetts
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15
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Safdar A. Respiratory Tract Infections: Sinusitis, Bronchitis, and Pneumonia. PRINCIPLES AND PRACTICE OF TRANSPLANT INFECTIOUS DISEASES 2019. [PMCID: PMC7120972 DOI: 10.1007/978-1-4939-9034-4_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Solid organ and hematopoietic stem cell transplant recipients are at increased risk of upper and lower respiratory tract infections. While these infections are frequently encountered in the general population, the spectrum of their clinical presentation including morbidity and mortality is increased in patients undergoing transplantation procedures. Impaired innate and adaptive immunity, potential anatomical abnormalities resulting from extensive surgical procedures, presences of indwelling medical devices, and increased healthcare exposure put transplant recipients at particularly high risk for respiratory tract disease. Infections of the respiratory tract can be divided into those affecting the paranasal sinuses, the upper airways such as bronchitis and tracheobronchitis, and the lower airways like pneumonia. Each of these clinical syndromes can further be classified based on their chronicity, acute vs. chronic; their setting, community vs. nosocomial; and the etiology such as bacteria, viruses, fungi, and rarely parasites. It is also important to realize that such immunologically vulnerable patients are at risk for polymicrobial infection that may present concurrently or in a sequential, consecutive fashion. This chapter reviews the common respiratory tract infections affecting transplant recipients with particular attention directed toward epidemiological risk factors, clinical presentations, diagnostic strategies, and common pathogens. Specific causes of opportunistic pneumonias are also reviewed.
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Affiliation(s)
- Amar Safdar
- Clinical Associate Professor of Medicine, Texas Tech University Health Sciences Center El Paso, Paul L. Foster School of Medicine, El Paso, TX USA
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16
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Abstract
Nontuberculous mycobacterial (NTM) are found ubiquitously in the environment and are usually of low pathogenicity. Infection occurs via inhalation of aerosols, and some species may cause severe infections. The incidence of NTM infections is rising worldwide. The risk of developing NTM disease depends on the susceptibility of the host as well as the frequency and duration of exposure. In addition to congenital immune deficiencies and immunosuppressive therapy, structural lung and systemic diseases, including rheumatoid arthritis (RA), are associated with an increased risk for NTM infections. The immune response to NTM is complex and relies on the interplay between professional phagocytes and lymphoid cells. This interplay is concerted by three key cytokines: interleukin-12 (IL-12), tumor necrosis factor-α (TNF-α), and interferon-γ (IFN-γ). Targeted immunotherapies, e. g., treatment with TNF inhibitors, interfere with these essential pathways and increase the risk of NTM infection significantly. This review focuses on the relationship between the immune response to NTM and intrinsic and iatrogenic dispositions for NTM infection, with an emphasis on RA.
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Affiliation(s)
- A Nowag
- Klinische Infektiologie, Labor Dr. Wisplinghoff, Horbeller Straße 18-20, 50858, Köln, Deutschland.,Institut für Medizinische Mikrobiologie, Immunologie und Hygiene (IMMIH), Uniklinik Köln, Köln, Deutschland
| | - M Platten
- Klinik I für Innere Medizin, Uniklinik Köln, Köln, Deutschland.,Deutsches Zentrum für Infektionsforschung, Standort Bonn-Köln, Bonn-Köln, Deutschland
| | - G Plum
- Institut für Medizinische Mikrobiologie, Immunologie und Hygiene (IMMIH), Uniklinik Köln, Köln, Deutschland
| | - P Hartmann
- Klinische Infektiologie, Labor Dr. Wisplinghoff, Horbeller Straße 18-20, 50858, Köln, Deutschland. .,Institut für Medizinische Mikrobiologie, Immunologie und Hygiene (IMMIH), Uniklinik Köln, Köln, Deutschland. .,Deutsches Zentrum für Infektionsforschung, Standort Bonn-Köln, Bonn-Köln, Deutschland.
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17
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Abstract
The good clinical result of lung transplantation is constantly undermined by the high incidence of infection, which negatively impacts on function and survival. Moreover, infections may also have immunological interactions that play a role in the acute rejection and in the development of chronic lung allograft dysfunction. There is a temporal sequence in the types of infection that affects lung allograft: in the first postoperative month bacteria are the most frequent cause of infection; following this phase, cytomegalovirus and Pneumocystis carinii are common. Fungal infections are particularly feared due to their association with bronchial complication and high mortality. Scrupulous postoperative surveillance is mandatory for the successful management of lung transplantation patients with respect to early detection and treatment of infections. This paper is aimed to address clinicians in the management of the major infectious complications that affect the lung transplant population.
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Affiliation(s)
- Mario Nosotti
- Thoracic Surgery and Lung Transplantation Unit, Milano, Italy
| | - Paolo Tarsia
- Internal Medicine Department, Respiratory Unit and Cystic Fibrosis Adult Centre, Ca' Granda Foundation IRCCS Ospedale Maggiore Policlinico, Milano, Italy.,Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milano, Italy
| | - Letizia Corinna Morlacchi
- Internal Medicine Department, Respiratory Unit and Cystic Fibrosis Adult Centre, Ca' Granda Foundation IRCCS Ospedale Maggiore Policlinico, Milano, Italy.,Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milano, Italy
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18
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Rao M, Silveira FP. Non-tuberculous Mycobacterial Infections in Thoracic Transplant Candidates and Recipients. Curr Infect Dis Rep 2018; 20:14. [PMID: 29754381 DOI: 10.1007/s11908-018-0619-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
PURPOSE OF REVIEW To review and discuss the epidemiology, risk factors, clinical presentation, diagnosis, and treatment of non-tuberculous mycobacteria (NTM) in thoracic transplantation. RECENT FINDINGS Non-tuberculous mycobacteria are ubiquitous but are an uncommon cause of disease after solid organ transplantation. The incidence of infection is higher in thoracic transplant recipients than in abdominal transplant recipients, with most cases seen after lung transplantation. It is associated with increased morbidity and, occasionally, mortality. Infection in the pre-transplant setting can occur in lung transplant candidates, often posing a dilemma regarding transplant listing. Disease manifestations are diverse, and pulmonary disease is the most common. Diagnosis requires a high index of suspicion. Treatment requires a multiple-drug combination and is limited by drug-drug interactions and tolerability. Mycobacterium abscessus is a challenge in lung transplant recipients, due to its intrinsic resistance and propensity to relapse even after prolonged therapy. Mycobacterium chimaera is an emerging pathogen associated with contamination of heater-cooler units and is described to cause disease months after cardiothoracic surgery. NTM infections in thoracic organ transplant recipients are uncommon but are associated with substantial morbidity and mortality. Data from larger multicenter studies is needed to better define the epidemiology of NTM in thoracic transplantation, best treatment options, and the management of infected transplant candidates.
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Affiliation(s)
- Mana Rao
- Essen Medical Associates, Bronx, NY, USA
| | - Fernanda P Silveira
- Department of Medicine, Division of Infectious Diseases, University of Pittsburgh, 3601 Fifth Avenue Suite 3A, Pittsburgh, PA, 15213, USA.
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Abstract
The skin is colonized by a diverse collection of microorganisms which, for the most part, peacefully coexist with their hosts. Skin and soft tissue infections (SSTIs) encompass a variety of conditions; in immunocompromised hosts, SSTIs can be caused by diverse microorganisms-most commonly bacteria, but also fungi, viruses, mycobacteria, and protozoa. The diagnosis of SSTIs is difficult because they may commonly masquerade as other clinical syndromes or can be a manifestation of systemic disease. In immunocompromised hosts, SSTI poses a major diagnostic challenge, and clinical dermatological assessment should be initially performed; to better identify the pathogen and to lead to appropriate treatment, etiology should include cultures of lesions and blood, biopsy with histology, specific microbiological analysis with special stains, molecular techniques, and antigen-detection methodologies. Here, we reviewed the epidemiology, pathophysiology, clinical presentation, and diagnostic techniques, including molecular biological techniques, used for SSTIs, with a focus on the immunocompromised host, such as patients with cellular immunodeficiency, HIV, and diabetic foot infection.
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20
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Vieira AP, Trindade MAB, de Paula FJ, Sakai-Valente NY, Duarte AJDS, Lemos FBC, Benard G. Severe type 1 upgrading leprosy reaction in a renal transplant recipient: a paradoxical manifestation associated with deficiency of antigen-specific regulatory T-cells? BMC Infect Dis 2017; 17:305. [PMID: 28438129 PMCID: PMC5404339 DOI: 10.1186/s12879-017-2406-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 04/13/2017] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Due to its chronic subclinical course and large spectrum of manifestations, leprosy often represents a diagnostic challenge. Even with proper anti-mycobacteria treatment, leprosy follow up remains challenging: almost half of leprosy patients may develop reaction episodes. Leprosy is an infrequent complication of solid organ transplant recipients. This case report illustrates the challenges in diagnosing and managing leprosy and its reactional states in a transplant recipient. CASE PRESENTATION A 53-year-old man presented 34 months after a successful renal transplantation a borderline-tuberculoid leprosy with signs of mild type 1 upgrading reaction (T1R). Cutaneous manifestations were atypical, and diagnosis was only made when granulomatous neuritis was found in a cutaneous biopsy. He was successfully treated with the WHO recommended multidrug therapy (MDT: rifampicin, dapsone and clofazimine). However he developed a severe T1R immediately after completion of the MDT but no signs of allograft rejection. T1R results from flare-ups of the host T-helper-1 cell-mediated immune response against Mycobacterium leprae antigens in patients with immunologically unstable, borderline forms of leprosy and has been considered an inflammatory syndrome in many aspects similar to the immune reconstitution inflammatory syndromes (IRS). The T1R was successfully treated by increasing the prednisone dose without modifying the other immunosuppressive drugs used for preventing allograft rejection. Immunological study revealed that the patient had a profound depletion of both in situ and circulating regulatory T-cells and lack of expansion of the Tregs upon M. leprae stimulation compared to T1R leprosy patients without iatrogenic immunosuppression. CONCLUSIONS Our case report highlights that leprosy, especially in the transplant setting, requires a high degree of clinical suspicion and the contribution of histopathology. It also suggests that the development of upgrading inflammatory syndromes such as T1R can occur despite the sustained immunosuppressors regimen for preventing graft rejection. Our hypothesis is that the well-known deleterious effects of these immunosuppressors on pathogen-induced regulatory T-cells contributed to the immunedysregulation and development T1R.
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Affiliation(s)
- Ana Paula Vieira
- Laboratory of Medical Investigation Unit 56, Division of Clinical Dermatology, Medical School, University of São Paulo, São Paulo, Brazil
| | | | - Flávio Jota de Paula
- Renal Transplantation Service, Clinics Hospital, Medical School, University of São Paulo, São Paulo, Brazil
| | - Neusa Yurico Sakai-Valente
- Laboratory of Medical Investigation Unit 53, Tropical Medicine Institute, University of São Paulo, São Paulo, Brazil
| | - Alberto José da Silva Duarte
- Laboratory of Medical Investigation Unit 56, Division of Clinical Dermatology, Medical School, University of São Paulo, São Paulo, Brazil
| | | | - Gil Benard
- Laboratory of Medical Investigation Unit 56, Division of Clinical Dermatology, Medical School, University of São Paulo, São Paulo, Brazil. .,Laboratory of Medical Investigation Unit 53, Tropical Medicine Institute, University of São Paulo, São Paulo, Brazil.
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21
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Brix SR, Iking-Konert C, Stahl RAK, Wenzel U. Disseminated Mycobacterium haemophilum infection in a renal transplant recipient. BMJ Case Rep 2016; 2016:bcr-2016-216042. [PMID: 27799227 DOI: 10.1136/bcr-2016-216042] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Opportunistic infections are a major concern in renal and transplant medicine. We present the case of a renal transplant recipient with a generalised Mycobacterium haemophilum infection after an increase in immunosuppressive therapy and treatment with a tumour necrosis factor-α (TNF-α) inhibitor. Infection involved skin and soft tissue, joints and bones, as well as the renal transplant with an interstitial nephritis. Rapid diagnosis using PCR and DNA sequencing allowed early appropriate treatment. Triple antibiotic therapy and reduction in immunosuppression resulted in a slow but sustained recovery. Immunosuppression causes severe opportunistic infections. TNF-α inhibitors are very effective and well tolerated but have an increased susceptibility to infections with mycobacteria. Mycobacterial infections represent a significant clinical risk to transplant recipients because of their aggressive clinical course and the need for complex toxic antibiotic treatments. In these patients, M. haemophilum is a cause of skin infections.
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Affiliation(s)
- Silke R Brix
- Medical Clinic, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | | | - Rolf A K Stahl
- Medical Clinic, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Ulrich Wenzel
- Medical Clinic, University Hospital Hamburg-Eppendorf, Hamburg, Germany
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22
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Species diversity and molecular characterization of nontuberculous mycobacteria in hospital water system of a developing country, Iran. Microb Pathog 2016; 100:62-69. [PMID: 27616445 DOI: 10.1016/j.micpath.2016.09.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Accepted: 09/06/2016] [Indexed: 11/24/2022]
Abstract
BACKGROUND Hospital environment is of crucial importance in cross-transmission of opportunistic pathogens to the patients. Nontuberculous mycobacteria have the remarkable capability to withstand the adverse condition of hospital environments and pose a potential threat to the health of patients. The current study aimed to assess the frequency and diversity of mycobacteria in hospital water of a developing country using a combination of conventional and molecular methods. METHODS A total of 148 hospital water samples collected from 38 hospitals were analyzed for the presence of mycobacteria using standard protocols for isolation and characterization of the isolates. The conventional tests were used for preliminary identification and Runyon's classification, the PCR amplification of hsp65 gene and sequence analysis of 16S rRNA were applied for the genus and species identification. RESULTS A total of 71 [48%] isolates including 30 rapidly growing and 41 slowly growing mycobacteria were recovered. The three most prevalent species were M. lentiflavum, 28.2%, M. paragordonae, 21.1%, and M. fredriksbergense, 9.8%, followed by M. simiae and M. novocastrense, 7%, M. canariasense and M. cookii like, 5.6%, M. setense, 4.2%, M. fortuitum and M. gordonae, 2.8%, and the single isolates of M. austroafricanum, M. massiliense, M. obuense, and M. phocaicum like. CONCLUSION The results of our study show that the hospital water resources, drinking or non-drinking can be the reservoir of a diverse range of mycobacteria. This reaffirms the fact that these organisms due to intrinsic resistance to common antiseptic and disinfectant solutions persist in hospitals and create a threat to the patient's health and in particular to those that suffer from weakness of immunity.
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23
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Trubiano JA, Johnson D, Sohail A, Torresi J. Travel vaccination recommendations and endemic infection risks in solid organ transplantation recipients. J Travel Med 2016; 23:taw058. [PMID: 27625399 DOI: 10.1093/jtm/taw058] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 07/25/2016] [Indexed: 12/12/2022]
Abstract
BACKGROUND Solid organ transplant (SOT) recipients are often heavily immunosuppressed and consequently at risk of serious illness from vaccine preventable viral and bacterial infections or with endemic fungal and parasitic infections. We review the literature to provide guidance regarding the timing and appropriateness of vaccination and pathogen avoidance related to the immunological status of SOT recipients. METHODS A PUBMED search ([Vaccination OR vaccine] AND/OR ["specific vaccine"] AND/OR [immunology OR immune response OR cytokine OR T lymphocyte] AND transplant was performed. A review of the literature was performed in order to develop recommendations on vaccination for SOT recipients travelling to high-risk destinations. RESULTS Whilst immunological failure of vaccination in SOT is primarily the result of impaired B-cell responses, the role of T-cells in vaccine failure and success remains unknown. Vaccination should be initiated at least 4 weeks prior to SOT or more than 6 months post-SOT. Avoidance of live vaccination is generally recommended, although some live vaccines may be considered in the specific situations (e.g. yellow fever). The practicing physician requires a detailed understanding of region-specific endemic pathogen risks. CONCLUSIONS We provide a vaccination and endemic pathogen guide for physicians and travel clinics involved in the care of SOT recipients. In addition, recommendations based on timing of anticipated immunological recovery and available evidence regarding vaccine immunogenicity in SOT recipients are provided to help guide pre-travel consultations.
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Affiliation(s)
- Jason A Trubiano
- Department of Infectious Diseases, Austin Health, Heidelberg, VIC, Australia Department of Infectious Diseases, Peter MaCallum Cancer Centre, Melbourne, VIC, Australia Department of Medicine, University of Melbourne, Parkville, VIC, Australia
| | - Douglas Johnson
- Department of Infectious Diseases, Austin Health, Heidelberg, VIC, Australia Department of Medicine, University of Melbourne, Parkville, VIC, Australia Department of General Medicine, Austin Health, Heidelberg, VIC, Australia
| | - Asma Sohail
- Department of Infectious Diseases, Austin Health, Heidelberg, VIC, Australia
| | - Joseph Torresi
- Department of Infectious Diseases, Austin Health, Heidelberg, VIC, Australia Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, The University of Melbourne, Melbourne, VIC, Australia Eastern Infectious Diseases and Travel medicine, Knox Private Hospital, Boronia, VIC, Australia
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24
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Lake MA, Ambrose LR, Lipman MCI, Lowe DM. '"Why me, why now?" Using clinical immunology and epidemiology to explain who gets nontuberculous mycobacterial infection. BMC Med 2016; 14:54. [PMID: 27007918 PMCID: PMC4806462 DOI: 10.1186/s12916-016-0606-6] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2015] [Accepted: 03/18/2016] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND The prevalence of nontuberculous mycobacterial (NTM) disease is rising. An understanding of known risk factors for disease sheds light on the immunological and physical barriers to infection, and how and why they may be overcome. This review focuses on human NTM infection, supported by experimental and in vitro data of relevance to the practising clinician who seeks to understand why their patient has NTM infection and how to further investigate. DISCUSSION First, the underlying immune response to NTM disease is examined. Important insights regarding NTM disease susceptibility come from nature's own knockouts, the primary immune deficiency disorders. We summarise the current knowledge surrounding interferon-gamma (IFNγ)-interleukin-12 (IL-12) axis abnormalities, followed by a review of phagocytic defects, T cell lymphopenia and rarer genetic conditions known to predispose to NTM disease. We discuss how these define key immune pathways involved in the host response to NTM. Iatrogenic immunosuppression is also important, and we evaluate the impact of novel biological therapies, as well as bone marrow transplant and chemotherapy for solid organ malignancy, on the epidemiology and presentation of NTM disease, and discuss the host defence dynamics thus revealed. NTM infection and disease in the context of other chronic illnesses including HIV and malnutrition is reviewed. The role of physical barriers to infection is explored. We describe how their compromise through different mechanisms including cystic fibrosis, bronchiectasis and smoking-related lung disease can result in pulmonary NTM colonisation or infection. We also summarise further associations with host factors including body habitus and age. We use the presented data to develop an over-arching model that describes human host defences against NTM infection, where they may fail, and how this framework can be applied to investigation in routine clinical practice.
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Affiliation(s)
- M Alexandra Lake
- Royal Free London NHS Foundation Trust, London, UK.,Division of Infection and Immunity, University College London, London, UK
| | - Lyn R Ambrose
- Institute of Immunity and Transplantation, University College London, Royal Free Campus, Pond Street, London, NW3 2QG, UK
| | - Marc C I Lipman
- Royal Free London NHS Foundation Trust, London, UK.,UCL Respiratory, Division of Medicine, Faculty of Medical Sciences, University College London, Royal Free Campus, London, UK
| | - David M Lowe
- Royal Free London NHS Foundation Trust, London, UK. .,Institute of Immunity and Transplantation, University College London, Royal Free Campus, Pond Street, London, NW3 2QG, UK.
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25
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Yoo JW, Jo KW, Kim SH, Lee SO, Kim JJ, Park SK, Lee JH, Han DJ, Hwang S, Lee S, Shim TS. Incidence, characteristics, and treatment outcomes of mycobacterial diseases in transplant recipients. Transpl Int 2016; 29:549-58. [DOI: 10.1111/tri.12752] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 07/16/2015] [Accepted: 01/22/2016] [Indexed: 01/01/2023]
Affiliation(s)
- Jung-Wan Yoo
- Department of Pulmonary and Critical Care Medicine; Asan Medical Center; University of Ulsan College of Medicine; Seoul Korea
| | - Kyung-Wook Jo
- Department of Pulmonary and Critical Care Medicine; Asan Medical Center; University of Ulsan College of Medicine; Seoul Korea
| | - Sung-Han Kim
- Department of Infectious Diseases; Asan Medical Center; University of Ulsan College of Medicine; Seoul Korea
| | - Sang-Oh Lee
- Department of Infectious Diseases; Asan Medical Center; University of Ulsan College of Medicine; Seoul Korea
| | - Jae Joong Kim
- Department of Cardiology; Asan Medical Center; University of Ulsan College of Medicine; Seoul Korea
| | - Su-Kil Park
- Department of Nephrology; Asan Medical Center; University of Ulsan College of Medicine; Seoul Korea
| | - Je-Hwan Lee
- Department of Hematology; Asan Medical Center; University of Ulsan College of Medicine; Seoul Korea
| | - Duck Jong Han
- Department of Surgery; Asan Medical Center; University of Ulsan College of Medicine; Seoul Korea
| | - Shin Hwang
- Department of Surgery; Asan Medical Center; University of Ulsan College of Medicine; Seoul Korea
| | - SeungGyu Lee
- Department of Surgery; Asan Medical Center; University of Ulsan College of Medicine; Seoul Korea
| | - Tae Sun Shim
- Department of Pulmonary and Critical Care Medicine; Asan Medical Center; University of Ulsan College of Medicine; Seoul Korea
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26
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Jankovic Makek M, Pavlisa G, Jakopovic M, Redzepi G, Zmak L, Vukic Dugac A, Hecimovic A, Mazuranic I, Jaksch P, Klepetko W, Samarzija M. Early onset of nontuberculous mycobacterial pulmonary disease contributes to the lethal outcome in lung transplant recipients: report of two cases and review of the literature. Transpl Infect Dis 2016; 18:112-9. [PMID: 26556693 DOI: 10.1111/tid.12481] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 09/21/2015] [Accepted: 09/21/2015] [Indexed: 11/29/2022]
Abstract
Lung transplant (LuTx) recipients represent a population at risk of nontuberculous mycobacterial pulmonary disease (NTM-PD). Yet the risk factors, the timing of NTM-PD after transplantation, and the association with allograft dysfunction all remain poorly defined. We report 2 cases of early-onset NTM-PD and review the literature, focusing on NTM-PD in LuTx recipients not colonized with NTM prior to transplantation. In addition, we summarize the main characteristics and differences between early- and late-onset disease.
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Affiliation(s)
- M Jankovic Makek
- Department for Lung Diseases, University Hospital Centre Zagreb, Zagreb, Croatia.,School of Medicine, University of Zagreb, Zagreb, Croatia
| | - G Pavlisa
- Department for Lung Diseases, University Hospital Centre Zagreb, Zagreb, Croatia.,School of Medicine, University of Zagreb, Zagreb, Croatia
| | - M Jakopovic
- Department for Lung Diseases, University Hospital Centre Zagreb, Zagreb, Croatia.,School of Medicine, University of Zagreb, Zagreb, Croatia
| | - G Redzepi
- Department for Lung Diseases, University Hospital Centre Zagreb, Zagreb, Croatia
| | - L Zmak
- National Reference Laboratory for Mycobacteria, National Institute of Health, Zagreb, Croatia
| | - A Vukic Dugac
- Department for Lung Diseases, University Hospital Centre Zagreb, Zagreb, Croatia
| | - A Hecimovic
- Department for Lung Diseases, University Hospital Centre Zagreb, Zagreb, Croatia
| | - I Mazuranic
- School of Medicine, University of Zagreb, Zagreb, Croatia.,Department of Thoracic Radiology, University Hospital Centre Zagreb, Zagreb, Croatia
| | - P Jaksch
- Department of Surgery, Division of Thoracic Surgery, Medical University of Vienna, Vienna, Austria
| | - W Klepetko
- Department of Surgery, Division of Thoracic Surgery, Medical University of Vienna, Vienna, Austria
| | - M Samarzija
- Department for Lung Diseases, University Hospital Centre Zagreb, Zagreb, Croatia.,School of Medicine, University of Zagreb, Zagreb, Croatia
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27
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Meije Y, Piersimoni C, Torre-Cisneros J, Dilektasli AG, Aguado JM. Mycobacterial infections in solid organ transplant recipients. Clin Microbiol Infect 2015; 20 Suppl 7:89-101. [PMID: 24707957 DOI: 10.1111/1469-0691.12641] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 03/21/2014] [Accepted: 03/29/2014] [Indexed: 12/29/2022]
Abstract
Mycobacterial infections represent a growing challenge for solid organ transplant recipients (SOT). The adverse effects of tuberculosis (TB) therapy present a major difficulty, due to the interactions with immunosuppressive drugs and direct drug toxicity. While TB may be donor-transmitted or community-acquired, it usually develops at a latent infection site in the recipient. Pre-transplant prevention efforts will improve transplant outcomes and avoid the complications associated with post-transplant diagnosis and treatment. The present review and consensus manuscript is based on the updated published information and expert recommendations. The current data about epidemiology, diagnosis, new regimens for the treatment of latent TB infection (LTBI), the experience with rifamycins for the treatment of active TB in the post-transplant period and the experience with isoniazid for LTBI in the liver transplant population, are also reviewed. We attempt to provide useful recommendations for each transplant period and problem concerning mycobacterial infections in SOT recipients.
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Affiliation(s)
- Y Meije
- Infectious Diseases Department, Hospital Universitari Vall d'Hebron, Barcelona, Spain
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28
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Abstract
Mycobacterial skin and soft tissue infection (SSTI) includes nontuberculous mycobacterial (NTM) infections, tuberculosis (TB), and leprosy. Diagnosis of mycobacterial SSTI can be challenging due to diverse clinical presentation, low yield from cultured specimens, and nonspecific histopathology on tissue biopsy. In addition, immunosuppressed patients may present with atypical or disseminated disease. Despite aggressive medical treatment and often with surgical intervention, results may be suboptimal with poor outcomes. Regimens typically require multiple antibiotics for extended periods of time and are often complicated by medication side effects and drug-drug interactions. Biopsy with culture is the gold standard for diagnosis, but newer molecular diagnostics and proteomics such as matrix-assisted laser desorption ionization-time of flight mass spectrometry have improved diagnosis with increased identification of clinically significant mycobacteria species in clinically relevant time frames. We will review updates in diagnostic tests along with clinical presentation and treatment of mycobacterial SSTI for NTM, TB, and leprosy.
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29
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Abstract
PURPOSE OF REVIEW Skin and soft tissues infections (SSTIs) caused by nontuberculous mycobacteria (NTM) are underrecognized and difficult to treat. Controversies exist for optimal medical management and the role of surgery. Defining the epidemiology in the environment, in animals and in healthcare aids disease prevention. This review focuses on recent advances in epidemiology, risk factors, diagnostics and therapy. RECENT FINDINGS The increasing consumer appetite for cosmetic and body-modifying procedures (e.g. tattooing, mesotherapy, liposuction) has been associated with rises in sporadic cases and outbreaks of NTM SSTIs. In mainstream healthcare, recent epidemiological studies have helped to quantify the increased risk of NTM infection related to anti-tumour necrosis factor-α monoclonal antibody therapy. Cervicofacial lymphadenitis in children poses management dilemmas, but recent studies and resultant algorithms have simplified decision-making. Molecular studies have led to a better understanding of the epidemiology, therapy and course of Mycobacterium ulcerans infection (Buruli ulcer) that remains prevalent in many areas including sub-Saharan Africa and southeastern Australia. Apart from molecular methods, the widespread adoption of matrix-assisted laser desorption ionization-time of flight mass spectrometry by routine laboratories has potential to simplify and expedite the laboratory identification of NTMs. SUMMARY An improved understanding of the epidemiology of NTM SSTIs indicates a need to apply effective infection control and ensure regulation of cosmetic and related procedures associated with nonsterile fluids. Broader access to newer diagnostic methods will continue to improve recognition of NTM disease. Along with a paucity of therapeutic agents, there is need for more reliable methods to assess susceptibility and selection of effective combination therapy.
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Ghrew MH, Lavery K, Gornasa M, Wilding T, Walsham A, O'Riordan E. Successful renal transplant in patient with controlled pulmonary non-tuberculous mycobacterium infection. Libyan J Med 2014; 9:25766. [PMID: 25249307 PMCID: PMC4172695 DOI: 10.3402/ljm.v9.25766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Murad H Ghrew
- Mycobacterial Infections Clinic, Department of Respiratory Medicine, Salford Royal NHS Foundation Trust, Salford, UK
| | - Kay Lavery
- Mycobacterial Infections Clinic, Department of Respiratory Medicine, Salford Royal NHS Foundation Trust, Salford, UK
| | - Magde Gornasa
- Mycobacterial Infections Clinic, Department of Respiratory Medicine, Salford Royal NHS Foundation Trust, Salford, UK
| | - Tina Wilding
- Mycobacterial Infections Clinic, Department of Respiratory Medicine, Salford Royal NHS Foundation Trust, Salford, UK
| | - Anna Walsham
- Department of Radiology, Salford Royal NHS Foundation Trust, Salford, UK
| | - Edmond O'Riordan
- Department of Renal Medicine, Salford Royal NHS Foundation Trust, Salford, UK
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Highlight on advances in nontuberculous mycobacterial disease in North America. BIOMED RESEARCH INTERNATIONAL 2014; 2014:919474. [PMID: 25574470 PMCID: PMC4177089 DOI: 10.1155/2014/919474] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2014] [Accepted: 08/22/2014] [Indexed: 01/15/2023]
Abstract
Nontuberculous mycobacteria (NTM) are ubiquitous in the environment and exist as an important cause of pulmonary infections in humans. Pulmonary involvement is the most common disease manifestation of NTM and the incidence of NTM is growing in North America. Susceptibility to NTM infection is incompletely understood; therefore preventative tools are not well defined. Treatment of pulmonary nontuberculous mycobacterial (NTM) infection is difficult and entails multiple antibiotics and an extended treatment course. Also, there is a considerable variation in treatment management that should be considered before initiating treatment. We highlight the new findings in the epidemiology diagnosis and treatment of mycobacterial infections. We debate new advances regarding NTM infection in cystic fibrosis patients and solid organ transplant recipients. Finally, we introduce a new epidemiologic model for NTM disease based on virulence-exposure-host factors.
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Yoo JW, Jo KW, Kang BH, Kim MY, Yoo B, Lee CK, Kim YG, Yang SK, Byeon JS, Kim KJ, Ye BD, Shim TS. Mycobacterial diseases developed during anti-tumour necrosis factor-α therapy. Eur Respir J 2014; 44:1289-95. [PMID: 25102962 DOI: 10.1183/09031936.00063514] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Nontuberculous mycobacterial (NTM) disease and tuberculosis (TB) develop during anti-tumour necrosis factor (TNF)-α therapy. We compared clinical characteristics and outcomes between the two diseases. A total of 1165 patients were screened for TB and treated with TNF-α antagonists from July 2004 to July 2013 for the following conditions: inflammatory bowel disease (n = 422), rheumatoid arthritis (n = 320), and ankylosing spondylitis (n = 389). TB and NTM disease were diagnosed at baseline screening in four and three patients, respectively, and developed during anti-TNF-α therapy in 19 and six patients, respectively. The incidence rate of TB and NTM disease was 747.7 per 100 000 and 238.2 per 100 000 person-years, respectively. Patients with NTM disease were older, with a greater proportion of females. All cases of NTM disease involved the lung, with rheumatoid arthritis (83.3%) being the most frequent underlying disease. The most common radiological feature was consolidation in NTM disease, and honeycombing was present in two rheumatoid arthritis patients with NTM disease. The most common pathogen was Mycobacterium intracellulare (n = 3) followed by Mycobacterium avium (n = 2). Both the NTM and TB group showed favourable outcomes. The clinical characteristics differed between NTM disease and TB that developed on anti-TNF-α agents, but clinical outcomes were favourable in both diseases.
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Affiliation(s)
- Jung-Wan Yoo
- Dept of Pulmonary and Critical Care Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Kyung-Wook Jo
- Dept of Pulmonary and Critical Care Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Bo-Hyung Kang
- Dept of Pulmonary and Critical Care Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Mi Young Kim
- Dept of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Bin Yoo
- Dept of Rheumatology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Chang-Keun Lee
- Dept of Rheumatology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Yong-Gil Kim
- Dept of Rheumatology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Suk-Kyun Yang
- Dept of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Jeong-Sik Byeon
- Dept of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Kyung-Jo Kim
- Dept of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Byong Duk Ye
- Dept of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Tae Sun Shim
- Dept of Pulmonary and Critical Care Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
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Johnson MM, Odell JA. Nontuberculous mycobacterial pulmonary infections. J Thorac Dis 2014; 6:210-20. [PMID: 24624285 DOI: 10.3978/j.issn.2072-1439.2013.12.24] [Citation(s) in RCA: 177] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Accepted: 12/12/2013] [Indexed: 01/15/2023]
Abstract
Pulmonary infections due to nontuberculous mycobacteria (NTM) are increasingly recognized worldwide. Although over 150 different species of NTM have been described, pulmonary infections are most commonly due to Mycobacterium avium complex (MAC), Mycobacterium kansasii, and Mycobacterium abscessus. The identification of these organisms in pulmonary specimens does not always equate with active infection; supportive radiographic and clinical findings are needed to establish the diagnosis. It is difficult to eradicate NTM infections. A prolonged course of therapy with a combination of drugs is required. Unfortunately, recurrent infection with new strains of mycobacteria or a relapse of infection caused by the original organism is not uncommon. Surgical resection is appropriate in selected cases of localized disease or in cases in which the infecting organism is resistant to medical therapy. Additionally, surgery may be required for infections complicated by hemoptysis or abscess formation. This review will summarize the practical aspects of the diagnosis and management of NTM thoracic infections, with emphasis on the indications for surgery and the results of surgical intervention. The management of NTM disease in patients with human immunodeficiency virus (HIV) infections is beyond the scope of this article and, unless otherwise noted, comments apply to hosts without HIV infection.
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Affiliation(s)
- Margaret M Johnson
- 1 Division of Pulmonary Medicine, 2 Department of Cardiothoracic Surgery, Mayo Clinic, Florida, USA
| | - John A Odell
- 1 Division of Pulmonary Medicine, 2 Department of Cardiothoracic Surgery, Mayo Clinic, Florida, USA
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Evans R, Bhagani S, Haque T, Harber M. Infectious Complications of Transplantation. PRACTICAL NEPHROLOGY 2014. [PMCID: PMC7121279 DOI: 10.1007/978-1-4471-5547-8_71] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Post-transplant infection is a common cause of graft deterioration, morbidity and mortality. It is also responsible for delayed discharge, multiple, often prolonged admissions and thus a significant clinical challenge. Infections can be donor derived, pre-existing in the recipient, nosocomial and opportunistic. For each of these categories, it is often possible to significantly reduce hazard and thus the adverse consequences by first identifying patients at high risk. As always, clinical vigilance is vital, but equally important is the establishment of robust clinical systems for prevention, screening and rapid treatment.
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Longworth SA, Vinnard C, Lee I, Sims KD, Barton TD, Blumberg EA. Risk factors for nontuberculous mycobacterial infections in solid organ transplant recipients: a case-control study. Transpl Infect Dis 2013; 16:76-83. [PMID: 24350627 DOI: 10.1111/tid.12170] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Revised: 04/10/2013] [Accepted: 05/27/2013] [Indexed: 11/27/2022]
Abstract
BACKGROUND The epidemiology of nontuberculous mycobacteria (NTM) disease in solid organ transplant recipients is poorly defined. METHODS We identified all solid organ transplant recipients with NTM disease at a single center over a 7.5-year period, and collected data on patient demographics, co-morbidities, immunosuppressive medications, and rejection. We conducted a case-control study to identify risk factors for disease, matching 3 control patients to each case patient by date of transplantation. RESULTS A total of 34 cases of NTM disease occurred during the study period, involving 6 single lung, 13 bilateral lung, 8 heart, 4 liver, 2 kidney, and 1 pancreas-kidney recipients. Cases were predominantly male (24/34), with a median age of 55 years (interquartile range [IQR]: 46-61 years), and developed after a median of 8 months post transplantation (IQR: 2-87 months). Mycobacterium abscessus and Mycobacterium avium complex were the most common pathogens, and the lung (including pleura) was the most common site of disease. In the adjusted case-control analysis, lung transplant recipients had the highest risk of NTM disease. CONCLUSIONS Additional studies are needed to evaluate the role of targeted surveillance measures for NTM disease in high-risk patients, particularly lung transplant recipients, and to characterize the mechanisms of disease acquisition.
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Affiliation(s)
- S A Longworth
- Department of Medicine, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
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Copeland NK, Arora NS, Ferguson TM. Mycobacterium haemophilum Masquerading as Leprosy in a Renal Transplant Patient. Case Rep Dermatol Med 2013; 2013:793127. [PMID: 24369511 PMCID: PMC3863494 DOI: 10.1155/2013/793127] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Accepted: 09/25/2013] [Indexed: 11/18/2022] Open
Abstract
Opportunistic infections following immunosuppression in solid organ transplant (SOT) patients are common complications with the skin being a common sight of infection. Nontuberculous mycobacteria (NTM) are rare but potential causes of skin infection in SOT patients. We present a case of an adult male immunosuppressed following renal transplantation who presented with an asymptomatic rash for several months. The patient's skin eruption consisted of erythematous papules and plaques coalescing into an annular formation. After failure of the initial empiric therapy, a punch biopsy was performed that demonstrated nerve involvement suspicious for Mycobacterium leprae. However, culture of the biopsy specimen grew acid-fast bacilli that were subsequently identified as M. haemophilum. His rash improved after a prolonged course of clarithromycin and ciprofloxacin. Both organisms are potential causes of opportunistic skin infections and can be difficult to distinguish with similar predilection for skin and other biochemical and genetic similarities. Ultimately they can be distinguished with culture as M. haemophilum will grow in culture and M. leprae will not. This case was unique due to nerve involvement on biopsy which is classically seen on biopsies of leprosy.
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Affiliation(s)
| | - Navin S. Arora
- Dermatology Service, Tripler Army Medical Center, Honolulu, HI 96859, USA
| | - Tomas M. Ferguson
- Infectious Disease Service, Tripler Army Medical Center, Honolulu, HI 96859, USA
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Mycobacterial infections in patients treated with tumor necrosis factor antagonists in South Korea. Lung 2013; 191:565-71. [PMID: 23728990 DOI: 10.1007/s00408-013-9481-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Accepted: 05/15/2013] [Indexed: 10/26/2022]
Abstract
BACKGROUND The aims of this study were to determine the incidence of tuberculosis (TB) and nontuberculous mycobacteria (NTM) lung disease in patients who were treated with tumor necrosis factor (TNF) antagonists in South Korea and to evaluate their clinical characteristics. METHODS We surveyed all patients (N = 509) who were treated with TNF antagonists at Severance Hospital, South Korea, between January 2002 and December 2011. We reviewed the patients' medical records and collected microbiological, radiographic, and clinical data, including the type of TNF blocker(s) used and the results of tuberculin skin tests and interferon-gamma release assays. RESULTS Rheumatoid arthritis (43.6 %) and ankylosing spondylitis (27.9 %) were the most common diseases in the patients treated with TNF antagonists. Patients received etanercept (33.4 %), infliximab (23.4 %), or adalimumab (13.2 %). The remaining patients received two or more TNF antagonists (30 %). Nine patients developed TB, and four patients developed NTM lung disease. After adjustment for age and sex, the standardized TB incidence ratio was 6.4 [95 % CI 3.1-11.7] compared with the general population. The estimated NTM incidence rate was 230.7 per 100,000 patients per year. CONCLUSIONS Our results show that mycobacterial infections increase in patients treated with TNF antagonists. The identification of additional predictors of TB for the treatment of latent tuberculosis infection and the careful monitoring and timely diagnosis of NTM-related lung disease are needed for patients who receive long-term therapy with TNF antagonists.
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Keating MR, Daly JS. Nontuberculous mycobacterial infections in solid organ transplantation. Am J Transplant 2013; 13 Suppl 4:77-82. [PMID: 23465001 DOI: 10.1111/ajt.12101] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Abstract
Mycobacterium abscessus is an environmental bacterium with increasing clinical relevance. Here, we report the annotated whole-genome sequence of M. abscessus strain M152.
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Genomic analysis of Mycobacterium abscessus strain M139, which has an ambiguous subspecies taxonomic position. J Bacteriol 2013; 194:6002-3. [PMID: 23045507 DOI: 10.1128/jb.01455-12] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Mycobacterium abscessus is a ubiquitous, rapidly growing species of nontuberculous mycobacteria that colonizes organic surfaces and is frequently associated with opportunistic infections in humans. We report here the draft genome sequence of Mycobacterium abscessus strain M139, which shows genomic features reported to be characteristic of both Mycobacterium abscessus subsp. abscessus and Mycobacterium abscessus subsp. massiliense.
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