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https://www.readbyqxmd.com/read/28174026/susceptibility-to-non-tuberculous-mycobacterial-disease-is-influenced-by-rs1518111-in-il10
#1
Samuel Halstrom, Rachel Thomson, Hayley Goullee, Svetlana Baltic, Richard Allcock, Suzanna E L Temple, Patricia Price
Although exposure to potentially pathogenic nontuberculous mycobacteria (NTM) via soil and domestic water supplies is common, pulmonary infection and disease are confined to a small proportion of older individuals. Previously, alleles of a polymorphism in IL10 (rs1800896) were associated with NTM disease and we demonstrated elevated production of IL-10 by blood leukocytes from patients with pulmonary NTM. Here seven additional polymorphisms in IL10 were investigated in a larger cohort of Caucasian controls and patients with pulmonary NTM disease...
February 4, 2017: Human Immunology
https://www.readbyqxmd.com/read/28157472/the-100-most-cited-articles-on-non-tuberculous-mycobacterial-infection-from-1995-to-2015
#2
B W Jhun, S-Y Kim, J H Kong, J R Park, S Y Park, M A Shim, K Jeon, H Y Park, S J Shin, W-J Koh
SETTING: Citation analyses aid in assessing quality, trends and future directions of research fields. OBJECTIVE: To identify the most influential articles on infections caused by non-tuberculous mycobacteria (NTM) in the last 20 years. DESIGN: We performed a cited reference search of the Web of Science database from 1995 to 2015. The 100 most cited articles on NTM infections were analysed. RESULTS: The top 100 articles were cited 114-1471 times, and were published from 1995 to 2013...
January 1, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/28139909/mycobacteria-in-municipal-wastewater-treatment-and-reuse-microbial-diversity-for-screening-the-occurrence-of-clinically-and-environmentally-relevant-species-in-arid-regions
#3
Yamrot M Amha, Muhammad Zohaib Anwar, Rajkumari Kumaraswamy, Andreas Henschel, Farrukh Ahmad
With accumulating evidence of pulmonary infection via aerosolized nontuberculous mycobacteria (NTM), it is important to characterize their persistence in wastewater treatment, especially in arid regions where treated municipal wastewater is extensively reused. To achieve this goal, microbial diversity of the genus Mycobacterium was screened for clinically- and environmentally-relevant species using pyrosequencing. Analysis of the post-disinfected treated wastewater showed presence of clinically-relevant slow-growers like M...
January 31, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28131606/antimicrobial-susceptibility-and-mic-distribution-of-41-drugs-against-clinical-isolates-from-china-and-reference-strains-of-nontuberculous-mycobacteria
#4
Guilian Li, Hui Pang, Qian Guo, Mingxiang Huang, Yanhong Tan, Chao Li, Jianhao Wei, Yuanzhi Xia, Yi Jiang, Xiuqin Zhao, Haican Liu, Li-Li Zhao, Zhiguang Liu, Donglei Xu, Kanglin Wan
To treat nontuberculous mycobacteria (NTM) infections more optimally, further research pertaining to mycobacterial susceptibility to antimicrobial agents is required. A total of 82 species of NTM reference strains and 23 species of NTM clinical isolates were included. Minimum inhibitory concentrations (MICs) for 41 drugs were determined using the microdilution method in cation-adjusted Mueller-Hinton broth. The results showed that most of the NTM were susceptible to aminoglycosides, quinolones, three macrolides (clarithromycin, azithromycin and roxithromycin), cefmetazole, linezolid and capreomycin...
December 21, 2016: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28128073/nontuberculous-mycobacteria-overview
#5
Won-Jung Koh
Nontuberculous mycobacteria (NTM) are emerging pathogens that affect both immunocompromised and immunocompetent patients. The development of molecular methods has allowed the characterization of new species and the identification of NTM to the precise species and subspecies levels. The incidence and prevalence of NTM lung disease are increasing worldwide, and this syndrome accounts for the majority of clinical cases of NTM disease. Common causative organisms of pulmonary infection are the slowly growing mycobacteria Mycobacterium avium complex and Mycobacterium kansasii and the rapidly growing mycobacteria, including Mycobacterium abscessus complex...
January 2017: Microbiology Spectrum
https://www.readbyqxmd.com/read/28127232/computed-tomography-findings-of-pulmonary-mycobacterium-simiae-infection
#6
Ayeh Baghizadeh, Payam Mehrian, Poopak Farnia
Nontuberculous mycobacterial (NTM) pulmonary infections can be quite similar to tuberculosis, both clinically and radiologically. However, the treatment protocol is not similar. Mycobacterium simiae is a rare cause of NTM pulmonary infection. Herein, we aimed to evaluate and compare the computed tomography (CT) scan findings of M. simiae infection in lungs. For this reason, thirty-four patients (n = 34) with M. simiae lung infection were retrospectively evaluated. Diagnosis was confirmed by American Thoracic Society (ATS) guidelines and CT scans were reviewed in both lung and mediastinal windows...
2017: Canadian Respiratory Journal: Journal of the Canadian Thoracic Society
https://www.readbyqxmd.com/read/28126017/ruptured-aortic-aneurysm-due-to-mycobacterium-bovis-bcg-with-a-delayed-bacteriological-diagnosis-due-to-false-negative-result-of-the-mpb-64-immunochromatographic-assay
#7
J Simar, L Belkhir, B Tombal, E André
BACKGROUND: Adjuvant therapy with bacillus Calmette-Guerin (BCG), a live attenuated strain of Mycobacterium bovis, has become the treatment of choice for low-risk superficial bladder carcinoma following transurethral resection of the bladder. Complications following vesical BCG instillations are uncommon but, in some cases, severe side-effects can occur such as sepsis or mycotic aneurysm. Besides usual laboratory techniques used for the diagnosis of Mycobacterium tuberculosis complex (MTBC) infections (smear microscopy and cultures), commercial immunochromatographic assays detecting MBP64, a 24 kDa M...
January 26, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28118021/notification-of-nontuberculous-mycobacteria-an-australian-perspective
#8
Rachel Thomson, Ellen Donnan, Anastasios Konstantinos
In Queensland, Australia, all cases of mycobacterial infection (TB and NTM) are notifiable under the Queensland Public Health Act (2005). This process originally emerged to avoid NTM confounding with notification of cases of Tuberculosis, but has facilitated awareness of the increasing incidence and changing epidemiology of NTM.(1) While initially not a public health priority, the notification process has facilitated research that has led to an appreciation of both public health and environmental health issues associated with these pathogens...
January 24, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28114153/mycobacterium-gordonae-skin-infection-in-an-immunocompetent-child
#9
Bridget Freyne, Nigel Curtis
Mycobacterium gordonae is a slow growing, pigmented, non-tuberculous mycobacterium (NTM). It is commonly associated with environmental contamination of clinical specimens but it is also a recognized pathogen in immunocompromised hosts. We describe an immunocompetent child with a spontaneously occurring skin ulcer on the face caused by M. gordonae infection.
January 19, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28098393/clinical-and-histopathological-features-of-cutaneous-nontuberculous-mycobacterial-infection-a-review-of-13-cases
#10
Jing Jing Li, Rohan Beresford, Janet Fyfe, Christopher Henderson
BACKGROUND: The incidence of cutaneous nontuberculous mycobacterial (NTM) infection has increased in recent decades due to widespread use of immunosuppressive therapy and better detection methods. The histopathology of cutaneous NTM infection is not pathognomic and the organisms are slow and difficult to culture, making diagnosis challenging. METHODS: We reviewed the clinical and histopathological features of 13 cases of cutaneous NTM infection, and performed panmycobacterial polymerase chain reaction (PCR) on the paraffin blocks...
January 18, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28091937/ocular-mycobacteriosis-dual-infection-of-m-tuberculosis-complex-with-m-fortuitum-and-m-bovis
#11
Kusum Sharma, Natasha Gautam, Megha Sharma, Mohit Dogra, Priya Bajgai, Basavaraj Tigari, Aman Sharma, Vishali Gupta, Surya Prakash Sharma, Ramandeep Singh
BACKGROUND: We report unfavorable outcome in a patient with subretinal granuloma caused by dual infection of Mycobacterium tuberculosis complex with Mycobacterium fortuitum and Mycobacterium bovis in an immunosuppressed, non-HIV patient. We did a systematic review of literature on dual infection due to M. tuberculosis and M. fortuitum via MEDLINE and PUBMED and could not find any case reported of causing this kind of dual infection in the eye. RESULTS: A 38-year-old Indian male patient presented with decreased vision in the left eye for 3 months, diagnosed as tubercular choroidal granuloma with associated retinal angiomatosis proliferans (RAP) lesion...
December 2017: Journal of Ophthalmic Inflammation and Infection
https://www.readbyqxmd.com/read/28077517/two-phase-hospital-associated-outbreak-of-mycobacterium-abscessus-investigation-and-mitigation
#12
Arthur W Baker, Sarah S Lewis, Barbara D Alexander, Luke F Chen, Richard J Wallace, Barbara A Brown-Elliott, Pamela J Isaacs, Lisa C Pickett, Chetan B Patel, Peter K Smith, John M Reynolds, Jill Engel, Cameron R Wolfe, Carmelo A Milano, Jacob N Schroder, Robert D Davis, Matthew G Hartwig, Jason E Stout, Nancy Strittholt, Eileen K Maziarz, Jennifer Horan Saullo, Kevin C Hazen, Richard J Walczak, Ravikiran Vasireddy, Sruthi Vasireddy, Celeste M McKnight, Deverick J Anderson, Daniel J Sexton
BACKGROUND: Nontuberculous mycobacteria (NTM) commonly colonize municipal water and cause healthcare-associated outbreaks. We investigated a biphasic outbreak of Mycobacterium abscessus at a tertiary care hospital. METHODS: Case patients had recent hospital exposure and laboratory-confirmed colonization or infection with M. abscessus from January 2013 through December 2015. We conducted a multidisciplinary epidemiologic, field, and laboratory investigation. RESULTS: The incidence rate of M...
January 11, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28076350/emergence-of-rare-species-of-nontuberculous-mycobacteria-as-potential-pathogens-in-saudi-arabian-clinical-setting
#13
Bright Varghese, Mushira Enani, Mohammed Shoukri, Sahar AlThawadi, Sameera AlJohani, Sahal Al-Hajoj
BACKGROUND: Clinical relevance of nontuberculous mycobacteria (NTM) is increasing worldwide including in Saudi Arabia. A high species diversity of NTM's has been noticed in a recent study. However, the identification in diagnostic laboratories is mostly limited to common species. The impact of NTM species diversity on clinical outcome is so far neglected in most of the clinical settings. METHODOLOGY/PRINCIPAL FINDINGS: During April 2014 to September 2015, a nationwide collection of suspected NTM clinical isolates with clinical and demographical data were carried out...
January 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28063416/nontuberculous-mycobacterial-infection-in-rheumatoid-arthritis-patients-a-single-center-experience-in-south-korea
#14
Doo-Ho Lim, Yong-Gil Kim, Tae Sun Shim, Kyung-Wook Jo, Byeongzu Ghang, Soo Min Ahn, Seokchan Hong, Chang-Keun Lee, Bin Yoo
Background/Aims: Nontuberculous mycobacteria (NTM) infection has been increasing worldwide in both general population and immunocompromised patients, which has also been reported in rheumatoid arthritis (RA) patients. This study aimed to identify the incidence and clinical characteristics of NTM infection in RA patients living in tuberculosis (TB) infection endemic area. Methods: We performed a retrospective analysis of NTM infection cases in our RA registry at a tertiary referral center from January 1995 to December 2013...
January 6, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28050369/a-case-of-surgical-site-infection-caused-by-mycobacterium-fortuitum-following-herniorrhaphy
#15
N S Madhusudhan, A Malini, Mima Maychet B Sangma
Rapidly Growing Mycobacteria (RGM) are opportunistic pathogens found in the environment. Mycobacterium fortuitum, M. chelonae and M.abscessus are the important human pathogens of this group. They cause wound infections, disseminated cutaneous disease, pulmonary infection in patients with cystic fibrosis or bronchiectasis, bone and joint infections and keratitis. Infections due to these Non-Tuberculous Mycobacteria (NTM) are increasingly reported. Post laparoscopic wound infections, mesh site infections and other surgical site infections due to M...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28043577/mycobacterium-haemophilum-a-report-of-cutaneous-infection-in-a-patient-with-end-stage-renal-disease
#16
Shahram Sabeti, Mahsa Pourabdollah Tootkaboni, Mitra Abdolahi, Mihan Pourabdollah
INTRODUCTION: Mycobacterium haemophilum is a slow-growing nontuberculous mycobacterium (NTM) that can cause ulcerating cutaneous or subcutaneous nodular skin lesions in immunocompromised and immunocompetent patients. Acid-fast staining cannot distinguish NTM from M. tuberculosis; culturing at two temperatures with iron-supplemented media and polymerase chain reaction (PCR) are needed for optimal detection of M. haemophilum. CASE PRESENTATION: A 32-year-old man with end-stage renal disease, undergoing hemodialysis twice a week, presented with multiple, painless, nonpruritic nodular lesions...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043562/identification-of-nontuberculous-mycobacteria-by-high-performance-liquid-chromatography-from-patients-in-tehran
#17
Ali Mirzapour, Ali Nazari Alam, Saeed Z Bostanabadi, Abdolrazagh H Shahraki, Soltan A Ebrahimi, Masoud Yousefi
BACKGROUND/OBJECTIVES: The genus Mycobacterium contains over 140 species comprises pathogenic and nonpathogenic strains. Nontuberculous mycobacteria (NTM) causing clinical disease have become increasingly common and more diverse. Widespread features of NTM infection can make the diagnosis difficult. Precise species-level detection can aid in distinguishing environmental contamination from actual infection and, furthermore, can assist in making a choice of antimicrobial therapy. MATERIALS AND METHODS: Mycolic acids extracted from saponified mycobacterial cells were examined by high performance liquid chromatography (HPLC) in addition to phenotypic tests for the identification of 20 clinical isolates of mycobacteria at Masoud Laboratory during 2014-2015...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043561/identification-of-different-subtypes-of-rapid-growing-atypical-mycobacterium-from-water-and-soil-sources-using-pcr-rflp-using-hsp65-and-rrna-16s-23s-genes
#18
Mohammad Varahram, Parissa Farnia, Shima Saif, Mehran Marashian, Poopak Farnia, Jaladein Ghanavi, Ali Akbar Velayati
OBJECTIVE/BACKGROUND: Nontuberculosis mycobacteria (NTM) are a diverse group of microorganisms that cause a variety of diseases in humans including skin, respiratory, and gastrointestinal tract infection. Generally, NTM are classified into two categories: rapid (<7days) and slow growing (>7days). In this study, we aimed to investigate NTM frequency and prevalence in environmental samples. Additionally, we tried to identify various subtypes of isolated rapid growing mycobacteria (RGM)...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043560/the-importance-of-single-nucleotide-polymorphisms-in-interferon-gamma-receptor-1-gene-in-pulmonary-patients-infected-with-rapid-grower-mycobacterium
#19
Poopak Farnia, Jalaledin Ghanavi, Payam Tabasri, Shima Saif, Ali Akbar Velayati
OBJECTIVE/BACKGROUND: Interferon gamma (IFN-γ) plays a key role in protective immune response against Mycobacterial infection. IFN-γ excretes its antimycobacterial effectors mechanisms by activation of macrophages and dendritic cells via interaction with its receptor complex, that is, a ligand-binding subunit [IFN-γ receptor (IFNGR)1] and an accessory subunit (IFNGR2) on the cell surface. It has been shown that individuals with complete or partial IFNGR1 receptor deficiency are highly susceptible to infection by nontuberculous mycobacteria (NTM), Mycobacterium tuberculosis, and some Salmonella species...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28017547/a-systematic-review-of-waterborne-infections-from-nontuberculous-mycobacteria-in-health-care-facility-water-systems
#20
Trudy Li, Lydia S Abebe, Ryan Cronk, Jamie Bartram
Healthcare-acquired infections are an increasing problem for health care providers and policy makers. Water is an overlooked source of infectious microorganisms in health care facilities. Waterborne nontuberculous mycobacteria (NTM) are ubiquitous, and particularly problematic in health care facility water systems, and cause a variety of diseases. The purpose of this review is to assess health care associated NTM infections from health care facility water systems. We documented susceptible populations, modes of transmission, and the median attack rate (e...
December 19, 2016: International Journal of Hygiene and Environmental Health
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