1
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Rodriguez C, Salas NM, Bruno M, Brett M, Byrd TF, Ruan L, Jakeman B. Treatment management of M. simiae infection complicated by severe immune reconstitution syndrome in two patients living with HIV. Int J STD AIDS 2023; 34:355-360. [PMID: 36629094 DOI: 10.1177/09564624221151090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Nontuberculosis mycobacterium are increasingly being identified as sources of disseminated infections in immunocompromised patients. These infections can be challenging to identify and treat due complexities of diagnosis and inherent resistance to many medications. We present two cases of patients with human immunodeficiency virus who had Mycobacterium simiae infections, complicated by immune reconstruction inflammatory syndrome (IRIS). We also present a review of the English literature surrounding the disease, including reported resistance patterns to antimicrobial therapy, which can be highly variable.
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Affiliation(s)
- Chelsea Rodriguez
- Department of Pharmacy, 21764University of New Mexico Hospitals, Albuquerque, NM, USA
| | - Natalie Mariam Salas
- Department of Internal Medicine, Division of Infectious Diseases, 1104University of New Mexico Hospitals, Albuquerque, NM, USA
| | - Matthew Bruno
- Department of Pharmacy Practice and Administrative Sciences, 15520University of New Mexico College of Pharmacy, Albuquerque, NM, USA
| | - Meghan Brett
- Department of Internal Medicine, Division of Infectious Diseases, 1104University of New Mexico Hospitals, Albuquerque, NM, USA
| | - Tom F Byrd
- Department of Internal Medicine, Division of Infectious Diseases, 1104University of New Mexico Hospitals, Albuquerque, NM, USA
| | - Lucy Ruan
- Department of Internal Medicine, Division of Infectious Diseases, 1104University of New Mexico Hospitals, Albuquerque, NM, USA
| | - Bernadette Jakeman
- Department of Pharmacy Practice and Administrative Sciences, 15520University of New Mexico College of Pharmacy, Albuquerque, NM, USA
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2
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Johnson SM, Piñera C, Whittaker E, Kirkhope N, Kon OM, Satta G, Balcells ME, Foster C. Rare Mycobacteria and HIV in Children: Two Case Reports. Clin Drug Investig 2022; 42:541-547. [PMID: 35578004 DOI: 10.1007/s40261-022-01153-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/18/2022] [Indexed: 11/25/2022]
Affiliation(s)
- Sarah M Johnson
- Paediatric Infectious Diseases, Imperial College Healthcare NHS Trust, London, W2 1NY, UK. .,Imperial College London, London, UK.
| | - Cecilia Piñera
- School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Elizabeth Whittaker
- Paediatric Infectious Diseases, Imperial College Healthcare NHS Trust, London, W2 1NY, UK.,Imperial College London, London, UK
| | - Natalie Kirkhope
- Paediatric Infectious Diseases, Imperial College Healthcare NHS Trust, London, W2 1NY, UK
| | - Onn M Kon
- Paediatric Infectious Diseases, Imperial College Healthcare NHS Trust, London, W2 1NY, UK.,Imperial College London, London, UK
| | - Giovanni Satta
- Centre for Clinical Microbiology, University College London, London, UK
| | | | - Caroline Foster
- Paediatric Infectious Diseases, Imperial College Healthcare NHS Trust, London, W2 1NY, UK.,Imperial College London, London, UK
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3
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Dashtbin S, Mirkalantari S, Dadashi M, Darban_Sarokhalil D. Investigation of drug regimens and treatment outcome in patients with Mycobacterium Simiae: a systematic review. Expert Rev Anti Infect Ther 2022; 20:1015-1023. [DOI: 10.1080/14787210.2022.2056019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Shirin Dashtbin
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Shiva Mirkalantari
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Masoud Dadashi
- Department of Microbiology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran
- Non-Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Davood Darban_Sarokhalil
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
- Microbial Biotechnology Research Center, Iran University of Medical Sciences, Tehran, Iran
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4
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Ashok A, Hoy J, Spelman D, McMahon J, Pai Mangalore R. Successful treatment of disseminated Mycobacterium simiae infection in a patient with advanced HIV. AIDS 2021; 35:157-158. [PMID: 33273186 DOI: 10.1097/qad.0000000000002702] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Aadith Ashok
- Department of Infectious Diseases, Alfred Hospital
| | - Jennifer Hoy
- Department of Infectious Diseases, Alfred Hospital
- Monash University, Melbourne, Victoria, Australia
| | - Denis Spelman
- Department of Infectious Diseases, Alfred Hospital
- Monash University, Melbourne, Victoria, Australia
| | - James McMahon
- Department of Infectious Diseases, Alfred Hospital
- Monash University, Melbourne, Victoria, Australia
| | - Rekha Pai Mangalore
- Department of Infectious Diseases, Alfred Hospital
- Monash University, Melbourne, Victoria, Australia
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5
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Draft Genome Sequence of Mycobacterium simiae, a Potential Pathogen Isolated from the Normal Human Oral Cavity. Microbiol Resour Announc 2020; 9:9/46/e01185-20. [PMID: 33184164 PMCID: PMC7661003 DOI: 10.1128/mra.01185-20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
We report the draft genome sequence of Mycobacterium simiae, a slowly growing nontuberculous mycobacterium (NTM) isolated from a mouthwash sample of a healthy person. This genome of 6,603,693 bp exhibited a 66.13% GC content and 6,391 genes with 6,257 coding sequences, 3 rRNAs, and 78 tRNAs. We report the draft genome sequence of Mycobacterium simiae, a slowly growing nontuberculous mycobacterium (NTM) isolated from a mouthwash sample of a healthy person. This genome of 6,603,693 bp exhibited a 66.13% GC content and 6,391 genes with 6,257 coding sequences, 3 rRNAs, and 78 tRNAs.
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6
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Salas NM, Byrd TF. Granulomatous interstitial nephritis in the setting of disseminated Mycobacterium simiae: a rare presentation of immune reconstitution inflammatory syndrome. Int J STD AIDS 2020; 31:911-913. [PMID: 32605502 DOI: 10.1177/0956462420926881] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Disseminated Mycobacterium simiae is a rare opportunistic infection reported most commonly in advanced human immunodeficiency virus (HIV) infection. Treatment can be further complicated by the occurrence of severe immune reconstitution inflammatory syndrome (IRIS). We present the first case of disseminated multi-drug-resistant M. simiae in the setting of advanced HIV, complicated by IRIS in the form of granulomatous interstitial nephritis causing acute renal failure. This case highlights the importance of recognizing rare complications of IRIS, as delays in therapy can be life threatening.
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Affiliation(s)
- Natalie Mariam Salas
- Department of Internal Medicine, Division of Infectious Disease, University of New Mexico Hospital Health Science Center, Albuquerque, NM, USA
| | - Thomas F Byrd
- Department of Internal Medicine, Division of Infectious Disease, University of New Mexico Hospital Health Science Center, Albuquerque, NM, USA
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7
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Nasiri M, Heidary M, Azimi T, Goudarzi H, Tabarsi P, Darban-Sarokhalil D, Feizabadi M. Mycobacterium simiae pulmonary disease in Iran: systematic review and meta-analysis. New Microbes New Infect 2018; 26:118-123. [PMID: 30370055 PMCID: PMC6199180 DOI: 10.1016/j.nmni.2018.09.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 09/11/2018] [Accepted: 09/13/2018] [Indexed: 02/05/2023] Open
Abstract
Mycobacterium simiae is one of the most common nontuberculous mycobacteria (NTM) microorganisms causing lung disease in many countries in the world. A reliable estimate of the extent of M. simiae pulmonary disease has not been well investigated in Iran. We systematically searched multiple databases to identify relative studies. Studies were excluded if they did not use the American Thoracic Society (ATS) and Infectious Diseases Society of America (IDSA) diagnostic criteria for NTM diseases. Data were extracted independently and in duplicate. We assessed pooled estimate by using a random model effect, and sources of heterogeneity were assessed by using Cochran's Q and the I 2 statistic. The potential for publication bias was explored by using Begg's and Egger's tests. All analyses were conducted with Stata 14.0 (StataCorp, College Station, TX, USA). Of 172 articles identified, seven met the inclusion criteria. Of 355 patients who were culture positive for NTM, 82 had M. simiae pulmonary disease according to the ATS/IDSA diagnostic criteria. The pooled frequency of M. simiae pulmonary disease among patients with NTM was 25.0% (95% confidence interval, 16.8-33.2). No evidence of publication bias was observed among the included studies (p >0.05 for Begg's and Egger's tests). Clinical isolates of M. simiae are increasingly being recognized as a cause of pulmonary disease in Iran and need further attention by health authorities.
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Affiliation(s)
- M.J. Nasiri
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - M. Heidary
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - T. Azimi
- Department of Medical Microbiology, School of Public Health, Tehran, Iran
| | - H. Goudarzi
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - P. Tabarsi
- Clinical TB and Epidemiology Research Center, National Research Institute of Tuberculosis and Lung Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - D. Darban-Sarokhalil
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - M.M. Feizabadi
- Department of Medical Microbiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
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Clinical, Radiological, and Microbiological Characteristics of Mycobacterium simiae Infection in 97 Patients. Antimicrob Agents Chemother 2018; 62:AAC.00395-18. [PMID: 29760130 DOI: 10.1128/aac.00395-18] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 05/05/2018] [Indexed: 11/20/2022] Open
Abstract
Mycobacterium simiae is a rare species of slow-growing nontuberculous mycobacteria (NTM). From 2002 to 2017, we conducted a retrospective study that included all patients with NTM-positive respiratory samples detected in two university hospitals of the French overseas department of Reunion Island. We recorded the prevalence of M. simiae in this cohort, as well as the clinical, radiological, and microbiological features of patients with at least 1 sample positive for M. simiae In our cohort, 97 patients (15.1%) were positive for M. simiae Twenty-one patients (21.6%) met the American Thoracic Society (ATS) criteria for infection. M. simiae infection was associated with bronchiectasis, micronodular lesions, and weight loss. Antibiotic susceptibility testing was performed for 60 patients, and the isolates were found to have low susceptibility to antibiotics, except for amikacin, fluoroquinolones, and clarithromycin. Treatment failed for 4 of the 8 patients treated for M. simiae infection. Here, we describe a specific cluster corresponding to a large cohort of patients with M. simiae, a rare nontuberculous mycobacterium associated with low pathogenicity and poor susceptibility to antibiotics.
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Hamieh A, Tayyar R, Tabaja H, E. L. Zein S, Bou Khalil P, Kara N, Kanafani ZA, Kanj N, Bou Akl I, Araj G, Berjaoui G, Kanj SS. Emergence of Mycobacterium simiae: A retrospective study from a tertiary care center in Lebanon. PLoS One 2018; 13:e0195390. [PMID: 29617415 PMCID: PMC5884548 DOI: 10.1371/journal.pone.0195390] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Accepted: 03/21/2018] [Indexed: 11/19/2022] Open
Abstract
Objective The objective of this study is to describe the clinical significance of Mycobacterium simiae at a major tertiary care center in Lebanon. Methods This is a retrospective study of patients with positive cultures for M. simiae isolated between 2004 and 2016 at the American University of Beirut Medical Center. Results This study included 103 M. simiae isolates recovered from 51 patients. Their mean age was 62.7 years. The majority were males and smokers. Specimens were mostly from respiratory sources (97%). Common comorbidities included chronic lung disease (such as chronic obstructive pulmonary disease), solid tumor, systemic disease, and diabetes mellitus. Productive cough and dyspnea were the most common symptoms. Frequent radiographic findings were infiltrates and nodules on chest X-ray and nodules, infiltrates, and bronchiectasis on chest computed tomography scan. Among 18 tested isolates, 5.8% were resistant to clarithromycin, 11.7% to amikacin, and 70–100% to other antimicrobials. Out of 13 patients receiving early treatment, 5 noted improvement, one had recurrence of symptoms, two received alternative diagnosis, and five died. Two of those deaths were related to M. simiae. Common treatment regimens included clarithromycin in different combinations with trimethoprim-sulfamethoxazole, moxifloxacin, and amikacin. Moreover, clofazimine was used in only two patients whose isolates were resistant to all but one agent. Duration of treatment ranged from 6–24 months. Conclusion In Lebanon, M. simiae is increasingly encountered with true infection rates of at least 47%. Furthermore, the prevalence of multidrug resistance among the Lebanese M. simiae isolates is very high limiting the treatment options.
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Affiliation(s)
- Amal Hamieh
- Department of Internal Medicine, Division of Infectious Diseases, American University of Beirut Medical Center, Beirut, Lebanon
| | - Ralph Tayyar
- Department of Internal Medicine, Division of Infectious Diseases, American University of Beirut Medical Center, Beirut, Lebanon
| | - Houssam Tabaja
- Department of Internal Medicine, Division of Infectious Diseases, American University of Beirut Medical Center, Beirut, Lebanon
| | - Saeed E. L. Zein
- Department of Internal Medicine, Division of Infectious Diseases, American University of Beirut Medical Center, Beirut, Lebanon
| | - Pierre Bou Khalil
- Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Nathalie Kara
- Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Zeina A. Kanafani
- Department of Internal Medicine, Division of Infectious Diseases, American University of Beirut Medical Center, Beirut, Lebanon
| | - Nadim Kanj
- Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Imad Bou Akl
- Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - George Araj
- Department of Pathology and Laboratory Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Ghina Berjaoui
- Department of Radiology, American University of Beirut Medical Center, Beirut, Lebanon
| | - Souha S. Kanj
- Department of Internal Medicine, Division of Infectious Diseases, American University of Beirut Medical Center, Beirut, Lebanon
- * E-mail:
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Zaragoza Bastida A, Rivero Pérez N, Valladares Carranza B, Isaac-Olivé K, Moreno Pérez P, Sandoval Trujillo H, Ramírez Durán N. Molecular Identification of Mycobacterium Species of Public Health and Veterinary Importance from Cattle in the South State of México. THE CANADIAN JOURNAL OF INFECTIOUS DISEASES & MEDICAL MICROBIOLOGY = JOURNAL CANADIEN DES MALADIES INFECTIEUSES ET DE LA MICROBIOLOGIE MEDICALE 2017; 2017:6094587. [PMID: 28694831 PMCID: PMC5488153 DOI: 10.1155/2017/6094587] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 05/12/2017] [Accepted: 05/21/2017] [Indexed: 11/30/2022]
Abstract
Mycobacterium genus causes a variety of zoonotic diseases. The best known example is the zoonotic tuberculosis due to M. bovis. Much less is known about "nontuberculous mycobacteria (NTM)," which are also associated with infections in humans. The Mexican standard NOM-ZOO-031-1995 regulates the presence of M. bovis in cattle; however, no regulation exists for the NTM species. The objective of this study was to isolate and identify nontuberculous mycobacteria species from cattle of local herds in the south region of the State of Mexico through the identification and detection of the 100 bp molecular marker in the 23S rRNA gene with subsequent sequencing of the 16S rRNA gene. Milk samples (35) and nasal exudate samples (68) were collected. From the 108 strains isolated, 39 were selected for identification. Thirteen strains isolated from nasal exudates amplified the 100 bp molecular marker and were identified as M. neoaurum (six strains), M. parafortuitum (four strains), M. moriokaense (two strains), and M. confluentis (one strain). Except M. parafortuitum, the other species identified are of public health and veterinary concern because they are pathogenic to humans, especially those with underlying medical conditions.
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Affiliation(s)
- Adrian Zaragoza Bastida
- Facultad de Medicina, Universidad Autónoma del Estado de México, Paseo Tollocan/Jesús Carranza s/n, 50180 Toluca, MEX, Mexico
- Área Académica de Medicina Veterinaria y Zootecnia, Instituto de Ciencias Agropecuaria, Universidad Autónoma del Estado de Hidalgo, Av. Universidad Km 1, Ex-Hda. de Aquetzalpa, 43600 Tulancingo, HGO, Mexico
| | - Nallely Rivero Pérez
- Área Académica de Medicina Veterinaria y Zootecnia, Instituto de Ciencias Agropecuaria, Universidad Autónoma del Estado de Hidalgo, Av. Universidad Km 1, Ex-Hda. de Aquetzalpa, 43600 Tulancingo, HGO, Mexico
| | - Benjamín Valladares Carranza
- Centro de Investigación y Estudios Avanzados en Salud Animal, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma del Estado de México, Km 15.5 Carretera Panamericana Toluca-Atlacomulco, 50200 Toluca, MEX, Mexico
| | - Keila Isaac-Olivé
- Facultad de Medicina, Universidad Autónoma del Estado de México, Paseo Tollocan/Jesús Carranza s/n, 50180 Toluca, MEX, Mexico
| | - Pablo Moreno Pérez
- Facultad de Medicina, Universidad Autónoma del Estado de México, Paseo Tollocan/Jesús Carranza s/n, 50180 Toluca, MEX, Mexico
| | - Horacio Sandoval Trujillo
- Departamento de Sistemas Biológicos, Universidad Autónoma Metropolitana-Xochimilco, Calzada del Hueso 1100, 04960 Ciudad de México, Mexico
| | - Ninfa Ramírez Durán
- Facultad de Medicina, Universidad Autónoma del Estado de México, Paseo Tollocan/Jesús Carranza s/n, 50180 Toluca, MEX, Mexico
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Chitasombat MN, Wattanatranon D. Disseminated Mycobacterium Simiae with Pelvic Malakoplakia in an AIDS Patient. CLINICAL MEDICINE INSIGHTS-CASE REPORTS 2015; 8:89-91. [PMID: 26483613 PMCID: PMC4603441 DOI: 10.4137/ccrep.s31751] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 09/06/2015] [Accepted: 09/08/2015] [Indexed: 01/10/2023]
Abstract
Malakoplakia in an acquired immunodeficiency syndrome (AIDS) patient with disseminated Mycobacterium simiae infection presented with a large pelvic mass that caused organ dysfunction from mimicking a tumor. Malakoplakia is a rare, chronic granulomatous abnormal host response toward infectious agents, presenting as a tumor-like lesion. This is the first report of pelvic malakoplakia after disseminated M. simiae infection in an AIDS patient.
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Affiliation(s)
- Maria Nina Chitasombat
- Division of Infectious Disease, Department of Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Duangkamon Wattanatranon
- Division of Anatomical Pathology, Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
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12
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Conger NG, O'Connell RJ, Laurel VL, Olivier KN, Graviss EA, Williams-Bouyer N, Zhang Y, Brown-Elliott BA, Wallace RJ. Mycobacterium simiaeOutbreak Associated With a Hospital Water Supply. Infect Control Hosp Epidemiol 2015; 25:1050-5. [PMID: 15636291 DOI: 10.1086/502342] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
AbstractObjective:Mycobacterium simiaeis found primarily in the southwestern United States, Israel, and Cuba, with tap water as its suspected reservoir. Our institution saw an increase inM. simiaeisolates in 2001. An investigation into possible contaminated water sources was undertaken.Design:Environmental cultures were performed from water taps in the microbiology laboratory, patient rooms, points in the flow of water to the hospital, and patients' homes. Patient and environmentalM. simiaewere compared by PFGE.Setting:Military treatment facility in San Antonio, Texas.Patients:All patients with cultures positive forM. simiaebetween January 2001 and April 2002. Medical records were reviewed.Results:M. simiaewas recovered from water samples from the hospital, patients' home showers, and a well supplying the hospital. A single PFGE clone was predominant among water isolates (9 of 10) and available patient isolates (14 of 19). There was an association between exposure to hospital water and pulmonary samples positive for the clonalM. simiaestrain (P= .0018). Only 3 of 22 culture-positive patients met criteria forM. simiaepulmonary disease. Of them, two had indistinguishableM. simiaestrains from tap water to which they were routinely exposed.Conclusions:This represents an outbreak ofM. simiaecolonization with one nosocomial infection. It is only the second time thatM. simiaehas been recovered from hospital tap water and its first presentation in municipal water. This study raises issues about the need and feasibility of eliminating or avoiding exposure toM. simiaefrom tap water.
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Affiliation(s)
- Nicholas G Conger
- Department of Infectious Disease, Wilford Hall Medical Center, Lackland AFB, Texas, USA
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13
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Brahmachari U, Saha S, Guchhait B, Guha SK. Disseminated Mycobacterium simiae manifested as IRIS: A case report. HIV & AIDS REVIEW 2015. [DOI: 10.1016/j.hivar.2015.02.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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14
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García-Martos P, García-Agudo L, González-Moya E, Galán F, Rodríguez-Iglesias M. [Infections due to Mycobacterium simiae]. Enferm Infecc Microbiol Clin 2014; 33:e37-43. [PMID: 25444043 DOI: 10.1016/j.eimc.2014.07.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 05/26/2014] [Accepted: 07/22/2014] [Indexed: 10/24/2022]
Abstract
Mycobacterium simiae is a slow-growing photochromogenic environmental mycobacterium, first described in 1965. Rarely associated with human infections, possibly due to its limited pathogenicity, it mainly produces lung infection in immunocompetent elderly patients with underlying lung disease, and in disseminated infections in immunosuppressed young patients with AIDS. A microbiological culture is needed to confirm the clinical suspicion, and genetic sequencing techniques are essential to correctly identify the species. Treating M. simiae infections is complicated, owing to the multiple resistance to tuberculous drugs and the lack of correlation between in vitro susceptibility data and in vivo response. Proper treatment is yet to be defined, but must include clarithromycin combined with other antimicrobials such as moxifloxacin and cotrimoxazole. It is possible that M. simiae infections are undiagnosed.
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Affiliation(s)
| | | | | | - Fátima Galán
- Servicio de Microbiología, Hospital Puerta del Mar, Cádiz, España
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15
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Desikan P, Panwalkar N, Parashar D, Trivedi SK, Chauhan DS. A case of massive pericardial effusion caused by Mycobacterium simiae. JMM Case Rep 2014. [DOI: 10.1099/jmmcr.0.001040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Prabha Desikan
- Department of Microbiology, Bhopal Memorial Hospital and Research Centre, Bhopal 462 038, India
| | - Nikita Panwalkar
- Department of Microbiology, Bhopal Memorial Hospital and Research Centre, Bhopal 462 038, India
| | - Deepti Parashar
- National JALMA Institute for Leprosy and Other Mycobacterial Diseases, Agra, India
| | - Skand Kumar Trivedi
- Department of Cardiology, Bhopal Memorial Hospital and Research Centre, Bhopal 462 038, India
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16
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Hankins D, Kelly M, Vijayan V. Mycobacterium simiae Infection of the Parotid Gland in an Immunocompetent Child. J Pediatric Infect Dis Soc 2013; 2:394-6. [PMID: 26619504 DOI: 10.1093/jpids/pis098] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
| | | | - Vini Vijayan
- Division of Immunology, Rheumatology and Infectious Diseases, Department of Pediatrics, University of Florida, Gainesville
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Management of cervicofacial nontuberculous lymphadenitis in children. Curr Opin Otolaryngol Head Neck Surg 2013; 21:581-7. [PMID: 24152916 DOI: 10.1097/moo.0000000000000005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW To review the body of literature on the treatment options for nontuberculous cervicofacial lymphadenitis in children, focusing on the most recent reports describing outcomes utilizing either observation alone, medical therapy or various forms of surgical intervention. RECENT FINDINGS Large studies have defined the time course of the disease and the safety and efficacy in treating nontuberculosis cervicofacial lymphadenitis with a wait-and-see approach. SUMMARY Nontuberculosis cervicofacial lymphadenitis is a disease with several stages that provides for various treatment options. All treatment regimens--wait-and-see approach, medical therapy, and surgical excision--have their risks and benefits. The current body of literature allows the otolaryngologist an assortment of treatment choices that permits him to tailor the treatment with an individualized approach for each family's preferences.
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18
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Sassi M, Robert C, Raoult D, Drancourt M. Non-contiguous genome sequence of Mycobacterium simiae strain DSM 44165(T.). Stand Genomic Sci 2013; 8:306-17. [PMID: 23991261 PMCID: PMC3746425 DOI: 10.4056/sigs.3707349] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Mycobacterium simiae is a non-tuberculosis mycobacterium causing pulmonary infections in both immunocompetent and imunocompromized patients. We announce the draft genome sequence of M. simiae DSM 44165T. The 5,782,968-bp long genome with 65.15% GC content (one chromosome, no plasmid) contains 5,727 open reading frames (33% with unknown function and 11 ORFs sizing more than 5000 -bp), three rRNA operons, 52 tRNA, one 66-bp tmRNA matching with tmRNA tags from Mycobacterium avium, Mycobacterium tuberculosis, Mycobacterium bovis, Mycobacterium microti, Mycobacterium marinum, and Mycobacterium africanum and 389 DNA repetitive sequences. Comparing ORFs and size distribution between M. simiae and five other Mycobacterium species M. simiae clustered with M. abscessus and M. smegmatis. A 40-kb prophage was predicted in addition to two prophage-like elements, 7-kb and 18-kb in size, but no mycobacteriophage was seen after the observation of 106M. simiae cells. Fifteen putative CRISPRs were found. Three genes were predicted to encode resistance to aminoglycosides, betalactams and macrolide-lincosamide-streptogramin B. A total of 163 CAZYmes were annotated. M. simiae contains ESX-1 to ESX-5 genes encoding for a type-VII secretion system. Availability of the genome sequence may help depict the unique properties of this environmental, opportunistic pathogen.
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Affiliation(s)
- Mohamed Sassi
- Unité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes (URMITE), Faculté de médecine, Marseille, France
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Abstract
The incidence, mortality, and epidemiology of human immunodeficiency virus (HIV)-associated pulmonary infections have changed as a result of effective antiretroviral and prophylaxis antimicrobial therapy. The clinical presentation, radiographic abnormalities, and treatment of pneumonia from various uncommon pathogens in patients with AIDS can be different from those in immunocompetent patients. Advances in invasive and noninvasive testing and molecular biological techniques have improved the diagnosis and prognosis of pulmonary infections in patients infected with HIV. This review focuses on pulmonary infections from nontuberculosis mycobacteria, cytomegalovirus, fungi (aspergillosis, cryptococcosis, endemic fungi), and parasites (toxoplasmosis), and uncommon bacterial pneumonia (nocardiosis, rhodococcosis) in these patients.
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Affiliation(s)
- Jakrapun Pupaibool
- Division of Infectious Diseases, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
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Abstract
Nontuberculous mycobacterial (NTM) infections are caused by environmental mycobacteria. Patients with pulmonary NTM disease usually have predisposing lung abnormalities. Diagnostic methods are evolving. Treatment is largely empiric. Data were extracted from peer reviewed publications, guidelines, and case series. Progressive NTM lung disease should be treated. Multidrug regimens are mostly macrolide based and are occasionally complemented by lung resection. Disease persistence and relapse are not uncommon and are a greater problem with so-called rapid-grower NTM infections. Some of the issues considered in this review are: the role of antibiotic susceptibility testing in predicting treatment effectiveness, optimal drug combinations, daily vs. intermittent dosing intervals for different NTM infections and disease severity, when the goal of cure should be replaced with observation or palliation, and patient selection for surgery. Future needs for development and research include improved epidemiology, definition of genetic and other risk factors, definition of predictors of treatment outcome, multicenter treatment studies, new drug discovery and animal models of disease and treatment.
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Affiliation(s)
- James L Cook
- Immunology and International Medicine, University of Illinois at Chicago, 808 South Wood Street, Chicago, IL 60612, USA.
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Refractory bacteremia and osteomyelitis resulting in fatal bacteremic pneumonia with multiorgan failure caused by Mycobacterium simiae in a non-human immunodeficiency Virus-Infected Adult. J Clin Microbiol 2009; 47:3777-9. [PMID: 19726604 DOI: 10.1128/jcm.00627-09] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Bacteremic pneumonia caused by Mycobacterium simiae in non-human immunodeficiency virus (HIV)-infected patients has rarely been reported. We describe a non-HIV-infected adult with refractory bacteremia, osteomyelitis, and colonization of M. simiae in the respiratory tract who subsequently developed fatal bacteremic pneumonia. The isolate was confirmed as M. simiae by 16S rRNA gene analysis.
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Balkis MM, Kattar MM, Araj GF, Kanj SS. Fatal disseminated Mycobacterium simiae infection in a non-HIV patient. Int J Infect Dis 2009; 13:e286-7. [DOI: 10.1016/j.ijid.2008.10.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2008] [Revised: 10/20/2008] [Accepted: 10/22/2008] [Indexed: 11/16/2022] Open
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23
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Narang R, Narang P, Jain AP, Mendiratta DK, Joshi R, Lavania M, Das R, Katoch VM. Disseminated disease caused by Mycobacterium simiae in AIDS patients: a report of three cases. Clin Microbiol Infect 2009; 16:912-4. [PMID: 19694759 DOI: 10.1111/j.1469-0691.2009.03021.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Disseminated disease caused by Mycobacterium simiae, a slowly growing nontuberculous mycobacterium, has been rarely reported in the literature. We report on three AIDS patients who were found to suffer from mycobacteraemia caused by M. simiae in a rural tertiary-care hospital in central India.
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Affiliation(s)
- R Narang
- TB Lab Support, Foundation for Innovative New Diagnostics, Geneva, Switzerland.
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Nunes EA, De Capitani EM, Coelho E, Panunto AC, Joaquim OA, Ramos MDC. Mycobacterium tuberculosis and nontuberculous mycobacterial isolates among patients with recent HIV infection in Mozambique. J Bras Pneumol 2009; 34:822-8. [PMID: 19009216 DOI: 10.1590/s1806-37132008001000011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2007] [Accepted: 01/30/2008] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVE Mycobacteriosis is frequently diagnosed among HIV-infected patients. In Mozambique, where few patients are under antiretroviral therapy and the prevalence of tuberculosis is high, there is need for better characterization of mycobacteria at the species level, as well as for the identification of patterns of resistance to antituberculous drugs. METHODS We studied a sample of 503 HIV-infected individuals suspected of having pulmonary tuberculosis. Of those 503, 320 tested positive for mycobacteria through sputum smear microscopy or culture of bronchoalveolar lavage fluid. RESULTS Acid-fast bacilli were observed in the sputum of 73% of the individuals presenting positive cultures. Of 277 isolates tested, only 3 were nontuberculous mycobacteria: 2 were identified as Mycobacterium avium and one was identified as M. simiae. Strains initially characterized as M. tuberculosis complex through polymerase chain reaction restriction analysis (PRA) of the hsp65 gene were later confirmed as such through PRA of the gyrB gene. Among the M. tuberculosis isolates, resistance patterns were as follows: to isoniazid, 14%; to rifampin, 6%; and multidrug resistance, 5%. Previously treated cases showed significantly higher rates of resistance to first-line antituberculous drugs. The most common radiological pattern was interstitial infiltrate (in 67%), followed by mediastinal lymph node enlargement (in 30%), bronchiectasis (in 28%), miliary nodules (in 18%) and cavitation (in 12%). Patients infected with nontuberculous mycobacteria presented clinical profiles indistinguishable from those of other patients. The median CD4 lymphocyte count in this group was 134 cells/mm(3). CONCLUSIONS There is a strong association between tuberculosis and AIDS in Mozambique, as expected in a country with a high prevalence of tuberculosis. Although drug resistance rates are high, the isoniazid-rifampin regimen continues to be the appropriate choice for initial therapy.
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Al-Mahruqi SH, van-Ingen J, Al-Busaidy S, Boeree MJ, Al-Zadjali S, Patel A, Richard-Dekhuijzen PN, van-Soolingen D. Clinical relevance of nontuberculous Mycobacteria, Oman. Emerg Infect Dis 2009; 15:292-4. [PMID: 19193276 PMCID: PMC2657629 DOI: 10.3201/eid1502.080977] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Little is known about the clinical relevance of nontuberculous mycobacteria (NTM) in the Arabian Peninsula. We assessed the prevalence and studied a random sample of isolates at a reference laboratory in Muscat, Oman. NTM cause disease in this region, and their prevalence has increased.
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Levy I, Grisaru-Soen G, Lerner-Geva L, Kerem E, Blau H, Bentur L, Aviram M, Rivlin J, Picard E, Lavy A, Yahav Y, Rahav G. Multicenter cross-sectional study of nontuberculous mycobacterial infections among cystic fibrosis patients, Israel. Emerg Infect Dis 2008; 14:378-84. [PMID: 18325250 PMCID: PMC2570835 DOI: 10.3201/eid1403.061405] [Citation(s) in RCA: 155] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
This 2-year cross-sectional evaluation of nontuberculous mycobacterial (NTM) infections involved all Israeli medical centers that treat cystic fibrosis patients. The study comprised 186 patients whose sputum was analyzed for NTM. The prevalence of NTM isolates was 22.6%, and 6.5% and 10.8% of the patients fulfilled the 1997 and 2007 American Thoracic Society criteria for NTM lung disease, respectively. Mycobacterium simiae (40.5%), M. abscessus (31.0%), and M. avium complex (14.3%) were the most prevalent. Presence of Aspergillus spp. in sputum and the number of sputum specimens processed for mycobacteria were the most significant predictors for isolation of NTM (odds ratio [OR] = 5.14, 95% confidence interval [CI] 1.87-14.11 and OR = 1.47, 95% CI 1.17-1.85, respectively). The incidence of NTM pulmonary infections is increasing among cystic fibrosis patients, reflecting the increase in longevity of such patients as well as environmental exposure to various species of mycobacteria.
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Affiliation(s)
- Isaac Levy
- Sheba Medical Center, Tel Hashomer, Israel
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Spindle cell pseudotumor of the brain associated with Mycobacterium haemophilum and Mycobacterium simiae mixed infection in a patient with AIDS: the first case report. Int J Infect Dis 2008; 12:421-4. [DOI: 10.1016/j.ijid.2007.11.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2007] [Revised: 11/29/2007] [Accepted: 11/30/2007] [Indexed: 11/21/2022] Open
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Maoz C, Shitrit D, Samra Z, Peled N, Kaufman L, Kramer MR, Bishara J. Pulmonary Mycobacterium simiae infection: comparison with pulmonary tuberculosis. Eur J Clin Microbiol Infect Dis 2008; 27:945-50. [PMID: 18488259 DOI: 10.1007/s10096-008-0522-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2007] [Accepted: 04/01/2008] [Indexed: 10/22/2022]
Abstract
To identify the clinical and radiological features distinguishing Mycobacterium simiae respiratory infection from pulmonary tuberculosis, the demographics, underlying conditions, and clinical and radiological findings of 121 consecutive patients with pulmonary tuberculosis and 102 with M. simiae respiratory infection were compared retrospectively. In the M. simiae group, the patients were older (mean age 69 +/- 16 years vs. 47 +/- 21 years, p = 0.0001), with a female predominance (62% vs. 45%, p = 0.008). Only 4% were of Ethiopian origin compared to 25% of the tuberculosis group (p = 0.0001). M. simiae infection was associated with significantly higher rates of smoking history, underlying chronic obstructive pulmonary disease, zero human immunodeficiency virus (HIV) infection compared to 10% in the tuberculosis group (p = 0.001), blunted symptoms, and noncavitary infiltrates in the lower/middle lobes on chest X-ray. HIV-negative patients with M. simiae respiratory infection are distinguishable from patients with pulmonary tuberculosis by several demographic, clinical, and radiological features. These findings have important diagnostic and therapeutic implications.
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Affiliation(s)
- C Maoz
- Recanati Center for Medicine and Research, Rabin Medical Center, Beilinson Hospital, Petah Tiqwa, Israel
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Travis EK, Junge RE, Terrell SP. Infection withMycobacterium simiaecomplex in four captive Micronesian kingfishers. J Am Vet Med Assoc 2007; 230:1524-9. [PMID: 17504049 DOI: 10.2460/javma.230.10.1524] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
CASE DESCRIPTION 4 captive adult Micronesian kingfishers (Halcyon cinnamomina cinnamomina) at 3 zoologic institutions were examined routinely or because of dyspnea or lethargy. CLINICAL FINDINGS All birds had marked hepatomegaly. Two birds had dyspnea caused by compression of air sacs by the enlarged liver, and 1 bird had generalized weakness and lethargy. Three birds had distended coelomic cavities, and 3 birds were thin or had lost weight. There were no consistent abnormalities in blood analytes. Results of most ancillary diagnostic tests such as acid-fast staining of cloacal or fecal swab specimens and culture of feces for acid-fast bacteria were negative. Results of examination of hepatic biopsy specimens in 2 of 4 birds were suggestive of mycobacteriosis. TREATMENT AND OUTCOME 3 birds died or were euthanized soon after diagnosis. One kingfisher was isolated and monitored for 4 months without treatment and died during anesthesia for disease monitoring. Postmortem histologic examination revealed histiocytic hepatitis and acid-fast bacteria in all 4 birds. Bacteriologic culture of liver specimens yielded Mycobacterium simiae complex in all 4 birds. CLINICAL RELEVANCE Infection with M simiae complex should be considered in ill Micronesian kingfishers, and further monitoring is warranted to determine whether this is an emerging pathogen in this species.
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Affiliation(s)
- Erika K Travis
- Saint Louis Zoo, 1 Government Dr, St Louis, MO 63110, USA
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Abstract
Mycobacterium simiae, a multidrug-resistant, opportunistic acid-fast bacillus, usually causes infection in immunocompromised hosts. We describe a previously healthy child with M. simiae necrotizing granulomatous cervical lymphadenitis. Cure was achieved with excision of the affected nodes and adjunctive antimicrobial therapy.
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Affiliation(s)
- Niraj C Patel
- Department of Pediatrics, Section of Infectious Diseases, Baylor College of Medicine, Houston, Texas 77030, USA.
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Carrière C, Godreuil S, Gouby A, Vincent V, Marchandin H, Terru D, Delaporte E, Sorokaty JM, Jumas-Bilak E, Van de Perre P. [Mycobacterium simiae infections: about two cases]. ACTA ACUST UNITED AC 2005; 53:324-7. [PMID: 16004943 DOI: 10.1016/j.patbio.2004.07.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2004] [Accepted: 07/28/2004] [Indexed: 11/18/2022]
Abstract
We report two cases of Mycobacterium simiae infections differing by the site of infection, the immunological status of the patients and the diagnostic methods used. The first case is a disseminated infection in an advanced immunosuppressed patient who died quickly confirming the severity of this infection in the context of HIV infection. The second case presented is a respiratory disease in a women with a past history of tuberculosis and an uneventful evolution of the M. simiae infection under treatment. These two cases demontrate the importance of molecular methods to correctly identify M. simiae.
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Affiliation(s)
- C Carrière
- Laboratoire de bactériologie, hôpital Arnaud-de-Villeneuve, 371, avenue du Doyen-Giraud, 34295 Montpellier, France.
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Keenan N, Jeyaratnam D, Sheerin NS. Mycobacterium simiae: A Previously Undescribed Pathogen in Peritoneal Dialysis Peritonitis. Am J Kidney Dis 2005; 45:e75-8. [PMID: 15861339 DOI: 10.1053/j.ajkd.2005.01.040] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Peritonitis is a major complication of peritoneal dialysis (PD). Coagulase-negative staphylococcus, Staphylococcus aureus , and Gram-negative bacteria cause the majority of these infections and usually are amenable to conventional antibiotic therapy, allowing continuation of PD. Mycobacterial and fungal peritonitis represent a more difficult clinical challenge. The infecting organism is often difficult to isolate and can rarely be eradicated without catheter removal. Immunocompromised patients are susceptible to opportunistic infection and, in the context of PD, may have PD peritonitis with different organisms from immunocompetent patients. Here the authors report for the first time PD peritonitis caused by Mycobacterium simiae , a nontuberculous mycobacterium, in a human immunodeficiency virus-positive patient. In addition the difficulty in diagnosing and managing nontuberculous PD peritonitis is discussed.
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Affiliation(s)
- Niall Keenan
- Renal Unit and Department of Infection, Guy's Hospital, London, United Kingdom
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Piquero J, Casals VP, Higuera EL, Yakrus M, Sikes D, de Waard JH. Iatrogenic Mycobacterium simiae skin infection in an immunocompetent patient. Emerg Infect Dis 2004; 10:969-70. [PMID: 15216858 PMCID: PMC3323202 DOI: 10.3201/eid1005.030681] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Affiliation(s)
- Jaime Piquero
- Departamento de Dermatología, Clínica Sanatrix, Caracas, Venezuela
| | | | | | - Mitchell Yakrus
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - David Sikes
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA
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Selvarangan R, Wu WK, Nguyen TT, Carlson LDC, Wallis CK, Stiglich SK, Chen YC, Jost KC, Prentice JL, Wallace RJ, Barrett SLR, Cookson BT, Coyle MB. Characterization of a novel group of mycobacteria and proposal of Mycobacterium sherrisii sp. nov. J Clin Microbiol 2004; 42:52-9. [PMID: 14715731 PMCID: PMC321678 DOI: 10.1128/jcm.42.1.52-59.2004] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We describe here the characterization of five isolates of Mycobacterium simiae-like organisms representing a novel group based on whole-cell fatty acid analysis and genotypic evaluation. Two of the five isolates in this study, W55 and W58, were previously considered to belong to M. simiae serotype 2. Analysis of cellular fatty acids by gas-liquid chromatography indicated a close clustering of this group, which was well differentiated from the other M. simiae-like species. Molecular characterization was performed by nucleic acid sequencing of the small subunit rRNA gene and the gene encoding the 65-kDa heat shock protein and genomic DNA hybridization. Sequence analysis of the entire 16S rRNA gene showed a unique sequence most closely related to those of M. triplex and M. simiae. The hsp65 partial gene sequence was identical for the five isolates, with 97% identity to the M. simiae type strain. However, qualitative whole genomic DNA hybridization analysis confirmed that this group is genetically distinct from M. simiae and M. triplex. Antimicrobial susceptibilities for this group resemble those of M. simiae and M. lentiflavum. We conclude that this group represents a unique Mycobacterium species for which we propose the name Mycobacterium sherrisii sp. nov.
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Affiliation(s)
- Rangaraj Selvarangan
- Department of Laboratory Medicine, University of Washington, Seattle, Washington, USA.
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Dietrich U, Arnold P, Guscetti F, Pfyffer GE, Spiess B. Ocular manifestation of disseminated Mycobacterium simiae infection in a cat. J Small Anim Pract 2003; 44:121-5. [PMID: 12653327 DOI: 10.1111/j.1748-5827.2003.tb00132.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Disseminated mycobacterial disease was diagnosed in an eight-year-old domestic shorthaired cat, with involvement of the skin, lungs, lymph nodes and one eye. Mycobacterium simiae was cultured from skin biopsies on solid agar and in liquid media. This organism is known to cause pulmonary, cutaneous or disseminated infection in human patients with acquired immunodeficiency syndrome but has never been encountered as a pathogen in companion animals. Combination treatment with rifampicin, enrofloxacin and clarithromycin resulted in complete clinical remission within six months, with no side effects. No recurrence was observed in a 22-month follow-up period.
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Affiliation(s)
- U Dietrich
- Department of Small Animal Surgery (Ophthalmology), University of Zurich, Winterthurerstrasse 260, CH-8057 Zurich, Switzerland
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